Calculation of emergency desuperheating water quantity at inlet of wet FGD system

NIE Pengfei; WANG Yang; ZHANG Hongyu; WANG Xuebin; ZHANG Jinsheng Datang Wangtan Power Generation Co.

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Calculation of emergency desuperheating water quantity at inlet of wet FGD system

更新时间：2025-09-28

- Calculation of emergency desuperheating water quantity at inlet of wet FGD system
- Thermal Power Generation Vol. 42, Issue 6, Pages: 75-77(2013)
- 作者机构：
  
  大唐王滩发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2013
- 稿件说明：
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NIE Pengfei, WANG Yang, ZHANG Hongyu, et al. Calculation of emergency desuperheating water quantity at inlet of wet FGD system[J]. Thermal power generation, 2013, 42(6): 75-77.
DOI：

NIE Pengfei, WANG Yang, ZHANG Hongyu, et al. Calculation of emergency desuperheating water quantity at inlet of wet FGD system[J]. Thermal power generation, 2013, 42(6): 75-77. DOI：

摘要

基于某600MW机组锅炉的石灰石-石膏湿法烟气脱硫装置实际运行数据

设定事故烟温和喷淋后烟温

分别采用基于烟气比热容、摩尔焓值、湿度等参数对事故喷淋水量进行计算

并通过计算对应的烟气饱和湿度对3种计算结果进行了校核。根据上述计算结果

对脱硫系统的事故喷淋装置进行了改造。改后实际运行结果表明

3种计算方法准确可靠

可将脱硫入口烟气温度降至饱和温度。

Abstract

On the basis of the actual operation data of a 600 MW unit boiler equipped with limestone-gypsum wet flue gas desulfurization(FGD) device

the emergency glue gas temperature and sprayed gas temperature were set.Such parameters of flue gas as specific heat capacity

enthalpy value per mole and humidity were adopted to calculate the emergency desuperheating water quantity

respectively.Moreover

by calculation of flue gas saturated humidity

the above three results were checked.Based on above calculation results

the accident spray device of the FGD system was modified.The operation results after the improvement indicated that

the above three calculation methods were accurate and reliable

and the temperature of entrance flue gas can be decreased to the saturated temperature dramatically.

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