Flue gas waste heat deep cascade utilization and emission reduction system for once-through lignite boiler

ZHENG Guokuan

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Flue gas waste heat deep cascade utilization and emission reduction system for once-through lignite boiler

Thermal Power Generation Issue 9, (2017)

更新时间：2025-09-28

- Flue gas waste heat deep cascade utilization and emission reduction system for once-through lignite boiler
- 作者机构：
  
  中国神华能源股份有限公司胜利能源分公司，内蒙古锡林浩特,026000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK09
- Published Online：30 September 2017，
  
  Published：2017
- 稿件说明：
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ZHENG Guokuan. Flue gas waste heat deep cascade utilization and emission reduction system for once-through lignite boiler[J]. Thermal Power Generation, 2017, (9).
DOI：

ZHENG Guokuan. Flue gas waste heat deep cascade utilization and emission reduction system for once-through lignite boiler[J]. Thermal Power Generation, 2017, (9). DOI：

摘要

某电厂2台燃用褐煤直流锅炉通过采用烟气余热深度梯级利用与减排系统加热高压给水和凝结水，来提高机组热效率和降低污染物排放量。在不同工况下，对系统投停进行试验对比和运行影响分析。结果表明：投运该系统后，660 MW负荷时实测发电煤耗、供电煤耗分别降低4.97 g/(kW・h)和5.12 g/(kW・h)；高负荷时除尘系统出口烟尘排放质量浓度、脱硫工艺用水、送风机及引风机电流等参数降幅较大；单台机组每年产生经济效益约为750万元，设备投资回收期约6年。建议在实际运行中适当增大旁路管径来提高烟气温度，同时增加吹灰频次，以弥补压缩空气旋转除灰系统吹灰能力的不足。

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