再议600MW 超临界机组冲转时主蒸汽温度偏高的防治措施

mthmh · 发表于 2009-7-29 17:47:32

再议600MW 超临界机组冲转时主蒸汽温度偏高的防治措施 黄伟，张建玲，彭敏，黄来，郭卫华，程贵兵，何军民 湖南省电力公司试验研究院，湖南长沙 410007 Treatment on main steam temperature higher than expecting when starting up at Changsha Power Plant 600MW supercritical unit HUANG Wei, ZHANG Jian-ling, PENG Min, HUANG Lai, GUO Wei-hua, CHENG Gui-bin, HE Jun-min Hunan Electric Power Test and Research Institute, Changsha 410007, China 
 摘要：东方锅炉（集团）股份有限公司与东方-日立锅炉有限公司合作设计、联合制造的 DG1900/25.4-Ⅱ1 型超临界参数变压直流本生型锅炉，在机组调试、试运期间，普遍存在冲转时锅炉侧主蒸汽温度高、压力低的问题，与汽轮机要求的冲转参数不匹配。其主要原因是煤水比控制不合适。为此提出维持锅炉燃油量 12t/h，退出给水流量低保护，给水流量降至 160～290t/h，冲转时随机投入高低压加热器，给水温度提高到 200℃以上，既解决了冲转时主蒸汽温度高、压力低的难题，又节约燃油，保证了机组启动安全、经济。 关键词：超临界机组；主蒸汽温度偏高；给水温度流量 Abstract: Dongfang Boiler (Group) Co., Ltd. and Oriental - Hitachi Ltd. cooperation boiler design, the joint manufacture of DG1900/25.4- 1 supercritical parameters of a variable pressure Ben boiler, during the unit tests and starting up process, the boiler side of the main steam temperatures are high, the problem of low pressure, and the turbine-to the requirements of parameters do not match. The main reason is not matching coal-water ratio, for the maintenance of boiler fuel made of 12t/h, from the protection of low water flow, water flow to 160~290t/h, the unit-around timely input to the high and low pressure heater , water temperature can be increased to 200 above, we solved the main steam ℃ -turn at high temperature problem, and saving fuel, the crew activated guarantee security, economic Key words: supercritical unit, higher main steam temperature, feed water temperature

Kd8D50UI.pdf (239.24 KB, 下载次数: 0)

		自动登录	找回密码
密码			注册