Cause Analysis and Control Countermeasures of Slurry Overflow in Desulfurization Absorber Tower Wastewater Pit

Haiwei YAN; Yazhao WANG; Jingdong GUO; Ke WANG; Dongmei LIAO

doi:10.12096/j.2096-4528.pgt.18162

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Cause Analysis and Control Countermeasures of Slurry Overflow in Desulfurization Absorber Tower Wastewater Pit

Power Generation and Environmental Protection | 更新时间：2025-06-06

- Cause Analysis and Control Countermeasures of Slurry Overflow in Desulfurization Absorber Tower Wastewater Pit
- Power Generation Technology Vol. 40, Issue 2, Pages: 141-147(2019)
- 作者机构：
  
  1.武汉大学动力与机械学院, 湖北省武汉市 430072
  2.中国华能集团有限公司, 北京市西城区 100031
  3.华能海南发电股份有限公司海口电厂, 海南省海口市 570100
  4.华能海南发电股份有限公司东方电厂, 海南省东方市 572600
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(11472197);Huaneng Group Corporation Headquarters of China Technology Fund Project(HNKJ17-H15)
- DOI：10.12096/j.2096-4528.pgt.18162
  CLC：
- Received：06 December 2018，
  
  Published：30 April 2019
- 稿件说明：
移动端阅览
Haiwei YAN, Yazhao WANG, Jingdong GUO, et al. Cause Analysis and Control Countermeasures of Slurry Overflow in Desulfurization Absorber Tower Wastewater Pit[J]. Power Generation Technology, 2019, 40(2): 141-147.
DOI：

Haiwei YAN, Yazhao WANG, Jingdong GUO, et al. Cause Analysis and Control Countermeasures of Slurry Overflow in Desulfurization Absorber Tower Wastewater Pit[J]. Power Generation Technology, 2019, 40(2): 141-147. DOI： 10.12096/j.2096-4528.pgt.18162.

摘要

某燃煤电厂脱硫系统中，#1吸收塔出现废水坑大量浆液溢流、石膏含水量过高和除雾器堵塞等现象。通过分析，发现主要原因为吸收塔负荷较大，导致空塔流速过快、亚硫酸钙氧化不充分、吸收塔内浆液密度过高、脱硫吸收浆液雾化颗粒量不足；结合其脱硫系统的超低排放改造，进行了增设喷淋层和改用单向双头式喷嘴、增设不锈钢托盘、设置增效环、改用三级屋脊高效除雾器、增加备用旋流子等设备改扩建。同时，提出了控制吸收塔pH值和密度、添加脱硫增效剂、增加氧化风机运行台数和提高除雾器清洗频率等改进措施。

Abstract

In the #1 absorption tower of a power plant wet flue gas desulfurization (WFGD) system

a large number of slurry overflowed from effluent pit

the gypsum moisture content beyond index and mist eliminator was blocked. Through analysis

the main reasons were the high load of absorption tower

the fast flow rate of the tower

the insufficient oxidation of calcium sulfite

the high slurry density in the absorption tower and the less desulfurization absorption slurry atomization particles. Combined with the ultra-low renovation project of the desulfurization system

some equipment expansion was implemented such as increasing the spray layer and backup swirl

switching to the one-way double-headed nozzle and three-roof ridge efficient demisters

installing the stainless-steel tray and synergistic ring on tower wall. Meanwhile

some improvement measures were put forward

such as controlling the pH value and density of the absorption tower

adding desulfurization synergist

increasing the number of oxidation fan operation and improving the demister cleaning frequency.

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references

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