超临界机组锅炉清洗工艺的选择及复合酸清洗工艺的应用

<p align="center"><strong><font size="3">超临界机组锅炉清洗工艺的选择及复合酸清洗工艺的应用</font></strong></p><p align="center">周宝文&nbsp; 陈寿爱<br/>山东电力研究院&nbsp; 山东中实易通集团股份有限公司</p><p>　　随着发电机组容量的不断增大，超临界机组越来越多。超临界机组锅炉的的设备结构和设备材质与亚临界及以下机组都发生了变化，在启动和运行过程中对汽水品质的要求更加严格，而锅炉清洗的质量直接影响启动阶段的汽水品质。因此，选择经济合理的锅炉清洗工艺的显得更加重要。<br/>　　目前锅炉清洗常用的清洗工艺主要有盐酸清洗、柠檬酸清洗、EDTA清洗和复合酸清洗，不同的清洗工艺各有特点。其中锅炉复合酸清洗工艺是由山东电力研究院在分析比较各种传统清洗工艺优缺点的基础上，研究开发的锅炉清洗新工艺。1997年获集团公司科技进步二等奖，经过多年的推广应用，在应用实践中显示出新工艺的优越性，于2000年获山东省科委科技进步三等奖。为超临界机组锅炉清洗工作的顺利实施，我们按照锅炉清洗工艺的一般选择原则，对盐酸清洗工艺、柠檬酸清洗工艺、EDTA清洗工艺和复合酸清洗工艺进行综合比较和优化选择。认为复合酸清洗工艺是超临界机组锅炉经济合理的清洗工艺，并在1000MW机组（邹县）及660MW机组（潍坊、黄岛、费县）锅炉清洗中应用。经专家评定取得了理想的清洗效果。<br/></p>

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">一、锅炉清洗工艺的选择原则<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">锅炉清洗工艺选择一般遵循四条原则：</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><span lang="EN-US"><p></p></span></span></b>&nbsp;[Post=100]</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1.1被清洗设备材质适用性原则<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">要求清洗介质适用于被清洗设备的清洗，不能对材质产生点蚀、局部腐蚀，不能影响设备使用性能。对材质的腐蚀性越小越好，也就是腐蚀速率越低越好。必须满足标准要求。超临界锅炉材质主要是碳钢、合金钢。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1.2被清洗垢类型适用性原则<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">要求清洗介质对垢有足够的溶解能力，溶垢要彻底。溶解后不产生沉积现象。基建锅炉主要清洗锈垢。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1.3工程实施难易程度原则<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">包括临时系统连接难易、工艺实现难易（配药及工艺控制、温度、时间等）。施工简单、工艺易控制、清洗条件容易满足的工艺优先。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1.4经济性原则<p></p></span></b></p><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">清洗设备、临时管道、药品造价成本、废液处理费用等。清洗成本低的工艺优先。</span></b>[/Post]

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">二、现有锅炉清洗工艺及特点<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2.1盐酸清洗工艺</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">

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</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"></span></b>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><span lang="EN-US"><p></p></span></span></b>&nbsp;</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2.2柠檬酸清洗工艺<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗能力弱：当系统的腐蚀产物较多时，在清洗过程中容易产生柠檬酸铁氨的沉积，影响清洗质量。材质适用范围广泛。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工艺过程较难控制<span lang="EN-US" style="mso-bidi-font-weight: bold;"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">温度要求高：清洗温度要求在<span lang="EN-US">95-98℃之间，当锅炉没有炉底加热系统或不进行锅炉点火时，对新建机组来讲，实现的难度较大。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">4）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">废液处理麻烦<span lang="EN-US" style="mso-bidi-font-weight: bold;"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">柠檬酸清洗废液，要求必须首先用废水处理池贮存，估计一台<span lang="EN-US">660MW机组的清洗废液和第一、第二遍冲洗液总共约1200m³，这些柠檬酸清洗废液必须在化学清洗结束后尽量处理，否则将产生刺鼻的臭气味，影响周围环境。一般的处理方式是在锅炉点火后，用泵达到煤厂，在锅炉进行燃烧。根据聊城电厂和菏泽电厂的经验，在机组试运期间难以实现，最终还会影响废水系统的正常运行。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2.3 EDTA清洗工艺<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗能力较弱，但适用材质范围广泛，适用于碳钢、低合金、高合金、铜及铜合金等多数材质的清洗<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工艺过程控制难度大<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">温度要求高<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗温度要求在<span lang="EN-US">120-140℃之间，需要锅炉点火，对新建机组来讲，实现的难度较大。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">4）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">废液处理较麻烦<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">EDTA清洗产生的废液，如果回收，则非常麻烦，且回收时间长，需要专门的回收设备，回收率低于50%；如果直接排掉，则总清洗费用很高。<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2.4复合酸清洗工艺</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b>&nbsp;[Power=200]</p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1）清洗能力强<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗能力比柠檬酸、<span lang="EN-US">EDTA强，比盐酸的清洗能力弱。该工艺在省内外共清洗基建机组和运行机组近80台，其中机组容量从100MW到660MW，有国产机组和进口机组，清洗范围包括机组的炉前系统和锅炉本体，在清洗过程中的清洗液最高总铁浓度达12000mg/L以上。<span style="mso-bidi-font-weight: bold;"><p></p></span></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">2）复合清洗剂适用的材质范围广泛 <p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">不仅仅适用于<span lang="EN-US">#20钢的清洗，还适用于不锈钢、合金钢、铜合金等多种材质的清洗。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3）清洗系统容易隔离<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗时锅炉有关阀门、合金设备（如汽包分离器）等不必拆除即可清洗。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">4）清洗的腐蚀速率很低<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">一般盐酸清洗腐蚀速率在<span lang="EN-US">5g/m²h左右，而新工艺腐蚀速率能控制在2g/m²h以内。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">5）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工艺过程容易控制<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">6）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗温度要求低<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">一般在<span lang="EN-US">50-60℃之间，只用临时清洗箱内的混合加热就能满足要求。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">7）</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">废液处理简单<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗废液只需进行常规的中和处理即可。<span lang="EN-US"><p></p></span></span></b></p>[/Power]

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">三、锅炉清洗工艺的比选<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3.1锅炉清洗各种工艺比较<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">超临界机组锅炉设备的材质主要是碳钢、合金钢。锅炉启动前清洗的垢类型主要是锈垢。锅炉系统大，加热升温存在困难。针对具体情况锅炉清洗工艺的选择比较如下。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">表（<span lang="EN-US">1）锅炉清洗工艺比选表</span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><span lang="EN-US"><p></p></span></span></b>&nbsp;[Post=300]</p><div align="center"><table cellspacing="0" cellpadding="0" width="605" border="1" style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; WIDTH: 16cm; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-alt: solid windowtext .5pt;"><tbody><tr><td valign="top" width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-diagonal-down: .5pt solid windowtext;"><p class="MsoNormal" align="right" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: right;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工艺<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">性能<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">盐酸<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗工艺<span lang="EN-US" style="mso-bidi-font-weight: bold;"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">柠檬酸<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗工艺<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt;"><h1 align="center" style="MARGIN: 6pt 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: normal; TEXT-ALIGN: center;"><span lang="EN-US" style="FONT-SIZE: 10.5pt; mso-hansi-font-family: 宋体;"><font face="宋体">EDTA<p></p></font></span></h1><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗工艺<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">复合酸<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗工艺<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">分项测评<span lang="EN-US"><p></p></span></span></b></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">材质适用性<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">不适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">垢类型适用性<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">适用<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工艺过程控制<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">较容易<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">较难<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">难<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">容易<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工程实施<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">容易<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">较难<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">较难<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">容易<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">工程经济性<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">经济<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">成本较高<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">成本最高<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">经济<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr><tr><td width="127" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 95.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">总体评价<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.3pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">不能选<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">可用但实现有难度<span lang="EN-US"><p></p></span></span></b></p></td><td width="107" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 80.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">不经济合理性差<span lang="EN-US"><p></p></span></span></b></p></td><td width="103" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 77.35pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">经济合理<span lang="EN-US"><p></p></span></span></b></p></td><td width="99" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 74.4pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt;"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-ALIGN: center;"><font face="Times New Roman">&nbsp;<b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></font></p></td></tr></tbody></table></div><div align="center">&nbsp;[/Post]</div><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3.2复合酸清洗工艺与其它工艺比较有如下优点</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">

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</span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">清洗废液只需进行常规的中和处理即可。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3.3与柠檬酸清洗工艺比较<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">与柠檬酸清洗工艺比较，由于在清洗实施过程中多次对清洗系统进行水冲洗，并有严格的冲洗指标控制确保系统冲洗干净，而柠檬酸清洗当系统的铁含量高时容易产生沉积物附着在管内壁，水冲洗不可能彻底冲洗干净。因此复合酸工艺清洗后，与柠檬酸清洗相比，锅炉系统更清洁干净。这一点对新机组启动过程的水汽品质有着重要意义。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3.4与EDTA清洗工艺比较<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">EDTA清洗由于是一次清洗完成，悬浮物及沉积物不可能彻底冲洗干净。因此复合酸工艺清洗后，与EDTA清洗相比，锅炉系统更清洁干净。<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">3.5 结论<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">复合酸清洗工艺在材质适用性、垢型适用性、工程实施难易程度及经济性等各方面较其它清洗工艺有着明显优越性和综合优势。因此超临界大型机组的锅炉清洗采用复合酸清洗新工艺进行清洗，是一个既经济又合理的选择。<span lang="EN-US"><p></p></span></span></b></p>

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char;"><b><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">四、复合酸清洗工艺在超临界锅炉清洗中的应用<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">复合酸清洗工艺的开发与应用已有<span lang="EN-US">10年的历史，在2005年以前主要用于基建和运行的汽包锅炉清洗，其中包括自然循环和控制循环的汽包锅炉。2006年又成功华电邹县#7机组（1000MW）、华电潍坊#机组（670MW）、黄岛电厂#5机组（660MW）、国电费县#1机组（660MW）等超临界和超超临界机组直流锅炉的清洗，由于直流锅炉设备材质为合金钢，不能采用盐酸进行清洗，但可以采用复合酸进行清洗，且复合酸具有清洗温度低、清洗工程实施难度小、清洗费用低等优点，因此在超临界锅炉清洗中复合酸清洗工艺更加显示出其优越性。<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">华电邹县<span lang="EN-US">#7机组（1000MW）、华电潍坊#机组（670MW）、黄岛电厂#5机组（660MW）、国电费县#1机组（660MW）等超临界和超超临界直流锅炉的清洗实践取得了良好的效果，经过华电潍坊电厂、邹县电厂和黄岛电厂的化学化验，复合酸清洗液中不含有对不锈钢、合金钢有害的氯离子。清洗后割管检查被清洗表面清洗彻底干净，检测腐蚀速率均小于2g/m2h。完全满足锅炉化学清洗导则的要求。为超临界、超超临界直流锅炉清洗提供了一种经济合理的新工艺。<p></p></span></span></b></p>

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<p>写得不错哟</p>

<p>写得不错哟！</p>

<p>写得不错哟</p>

<p>写得不错哟</p>