660MW直流锅炉启动时蒸汽温度高的原因分析及解决措施

Cause Analysis and Solution Measures on Superheated Steam Temperature During Start-up of 660 MW Once-through Boiler

针对神华河北国华定洲发电有限责任公司660MW直流锅炉启动时蒸汽温度偏高的问题,经分析,认为蒸汽温度偏高的主要原因为水冷壁产生的蒸汽量太小,并提出减小过量空气系数、降低一次风速度、增加燃料燃尽率等解决措施。

Aiming at Shenhua Hebei Guohua power generation Co. Ltd. , superheated steam temperature during： start-up of 660 mw once-through boiler, this paper considers the main reason for the high temperature steam for water wall produce steam content is too small, and proposes reducing excess air coefficient, lower a wind speed, increase fuel burn rate,and other measures.