Modeling and Optimal Control of Single-tower and Double-circulation Wet Flue Gas Desulfurization System

LI Ruilian; ZENG Deliang; CHEN Zhenyu; PAN Yan; GAO Yaokui

doi:10.19805/j.cnki.jcspe.2025.240093

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Modeling and Optimal Control of Single-tower and Double-circulation Wet Flue Gas Desulfurization System

更新时间：2026-02-02

- Modeling and Optimal Control of Single-tower and Double-circulation Wet Flue Gas Desulfurization System
- Chinese Journal of Power Engineering Vol. 45, Issue 3, Pages: 399-409(2025)
- 作者机构：
  
  1. 内蒙古工业大学电力学院,内蒙古,呼和浩特,010080
  2. 华北电力大学控制与计算机工程学院,北京,102206
  3. 中国华能集团有限公司,北京,100031
  4. 长沙有色冶金设计研究院有限公司研发中心,湖南,长沙,410019
  5. 西安热工研究院有限公司,陕西,西安,710054
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240093
  CLC： X773
- Published Online：15 March 2025，
  
  Published：2025
- 稿件说明：
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李瑞连,曾德良,陈振宇,潘岩,高耀岿. 单塔双循环湿式烟气脱硫系统建模与优化控制动力工程学报, 2025, 45(3): 399-409 https://doi.

org/10.19805/j.cnki.jcspe.2025.240093
李瑞连,曾德良,陈振宇,潘岩,高耀岿. 单塔双循环湿式烟气脱硫系统建模与优化控制动力工程学报, 2025, 45(3): 399-409 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240093.

org/10.19805/j.cnki.jcspe.2025.240093 DOI：

摘要

从实际工程应用出发

建立了单塔双循环湿式烟气脱硫(Single-tower and double-circulation wet flue gas desulfurization

SD-WFGD)系统的控制系统。首先

利用历史运行数据

考虑SD-WFGD系统运行过程吸收塔变频浆液循环泵在不同浆液pH时单位频率变化对烟气SO

浓度的影响

建立了系统动态模型。然后

基于浆液pH脱硫能力提出了直接硫量平衡控制(Direct sulfur balance control

DSC)策略

将已建立的动态模型作为控制模型

并利用传统PID控制器结合DSC策略

建立了SD-WFGD系统串联控制系统。仿真实验结果表明:与传统的PID控制方案相比

所提优化控制方案减小了供浆流量和出口SO

浓度的波动

能够大幅度提升SD-WFGD系统的控制性能

从而更好地保证脱硫系统在燃煤电站灵活运行的背景下安全、稳定、经济及灵活运行。

Abstract

From the perspective view of the practical engineering application

the control system called the single-tower and double-circulation wet flue gas desulfurization (SD-WFGD) system was established. Firstly

the dynamic model was developed by analyzing the impact of the unit frequency change of the absorption tower variable frequency slurry circulation pump on the flue gas SO

concentration at different slurry pH during the operation of the SD-WFGD system. Secondly

the direct sulfur balance control (DSC) strategy was proposed based on the desulfuriza

tion capacity of the slurry pH. The established dynamic model was then applied as a control model

and a serial control system for the SD-WFGD system was established by combining traditional PID controllers with the DSC strategy. Simulation test results demonstrated that

compared to traditional PID control schemes

the proposed optimized control scheme reduces fluctuations in slurry supply flow and outlet SO

concentration

significantly enhancing the control performance of the SD-WFGD system. This model can ensure the safe

stable

economical

and flexible operation of the desulfurization system in the context of flexible operation at coal-fired power stations.

关键词

Keywords

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