Survey on operation conditions of desulfurization facilities in coal-fired units

DU Zhen; QIAN Xuyue; ZHANG Yang; ZHU Yue

English

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Survey on operation conditions of desulfurization facilities in coal-fired units

Thermal Power Generation Vol. 43, Issue 3, Pages: 1-4(2014)

更新时间：2025-09-28

- Survey on operation conditions of desulfurization facilities in coal-fired units
- 作者机构：
  
  1. 华电电力科学研究院
  2. 浙江环科环境咨询有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X701.3
- Published：2014
- 稿件说明：
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DU Zhen, QIAN Xuyue, ZHANG Yang, et al. Survey on operation conditions of desulfurization facilities in coal-fired units[J]. Thermal Power Generation, 2014, 43(3): 1-4.
DOI：

DU Zhen, QIAN Xuyue, ZHANG Yang, et al. Survey on operation conditions of desulfurization facilities in coal-fired units[J]. Thermal Power Generation, 2014, 43(3): 1-4. DOI：

摘要

通过对48台燃煤发电机组石灰石-石膏烟气脱硫设施的运行状态进行调查分析

得到脱硫系统、增压风机、烟气换热器(GGH)、石膏脱水系统等设备的实际运行状况。结果表明:由于入口SO2浓度过高导致大部分脱硫系统脱硫效率达不到设计值;绝大部分增压风机因选型不合理、灰分及烟气量超设计值等原因导致其效率偏低;因堵塞问题GGH普遍运行压差过高

同时因腐蚀导致其漏风率过大;所有脱硫机组的石膏含水率均高于设计值10%。上述各因素综合作用致使脱硫系统电耗增加。

Abstract

Through investigation on operation status of 48 desulphurization facilities using limestone-gypsum

the actual running states of the desulfurization system

booster fan

flue gas heat exchanger and gypsum dewatering system were obtained.The results show that

the high inlet SO2 concentration is the reason why the desulfurization system desulfurization efficiency is less than the design value.Due to unreasonable type selection of booster fan and over high ash and flue gas volume(higher than the design vale)

most booster fans' efficiencies are too low to meet the design values.Congestion causes over high pressure of the GGH

and corrosion leads to the GGH's over large leakage rate.The water content in gypsum of all desulfurization units is higher than the design value(10%).All the above factors lead to increase in power consumption of the desulfurization system.

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