湿法烟气脱硫塔能效特性研究

doi:10.12096/j.2096-4528.pgt.20076

发电技术 ›› 2020, Vol. 41 ›› Issue (5): 543-551.DOI: 10.12096/j.2096-4528.pgt.20076

• 厂界环保岛与数字孪生技术 • 上一篇下一篇

湿法烟气脱硫塔能效特性研究

冷亚娟(),胡蕊,崔琳,董勇*()

燃煤污染物减排国家工程实验室(山东大学), 山东省济南市 250061

收稿日期:2020-08-31 出版日期:2020-10-30 发布日期:2020-11-02
通讯作者: 董勇
作者简介:冷亚娟(1996),女,硕士研究生,研究方向为脱硫节能增效技术, 17865312557@163.com|胡蕊(1995),女,硕士研究生,研究方向为燃煤电厂湿法脱硫塔能效评价|崔琳(1978),男,博士,副教授,研究方向为烟气污染物控制技术
基金资助:
国家重点研发计划项目(2017YFF0209803)

Study on Energy Efficiency Characteristics of Wet Flue Gas Desulfurization Tower

Yajuan LENG(),Rui HU,Lin CUI,Yong DONG*()

National Engineering Laboratory of Coal-fired Pollutant Reduction(Shandong University), Jinan 250061, Shandong Province, China

Received:2020-08-31 Published:2020-10-30 Online:2020-11-02
Contact: Yong DONG
Supported by:
National Key Research and Development Program of China(2017YFF0209803)

摘要/Abstract

摘要：

针对湿法烟气脱硫能效规律欠缺问题，以150 MW超低排放机组湿法脱硫塔为研究对象，基于脱硫设备的主要能耗和脱硫效率构建了脱硫能效指标——脱硫能效值，并采用数值模拟和理论分析相结合的方法，探究了液气比、入口烟气量、烟气流速、入口SO₂质量浓度、烟气温度等参数以及不同喷淋层组合方式对脱硫能效特性的影响规律。结果表明：脱硫能效值为0.22~0.96 kg/（kW·h），并随入口SO₂质量浓度增加呈正比例变化，随喷淋层组合数、液气比和入口烟气温度增加呈反比例变化，随入口烟气量和塔内烟气流速增加先上升后下降。研究结果可为脱硫技术评价和脱硫系统节能运行提供参考。

关键词: 湿法脱硫塔, 数值模拟, 脱硫能效值, 能效指标规律

Abstract:

Aiming at the lack of energy efficiency law of wet flue gas desulfurization, this paper takes the wet flue gas desulfurization tower of a 150 MW unit which has been in ultra low emission standard as the research object. An energy efficiency index of desulfurization, namely desulfurization energy efficiency value, was constructed based on the main energy consumption and desulfurization efficiency of the desulfurization equipment. The effects of liquid/gas ratio, inlet flue gas volume, flue gas velocity, inlet SO₂ concentration, flue gas temperature and different spray layer combinations on the desulfurization energy efficiency characteristics were studied by combining numerical simulation and theoretical analysis. The results show that the desulfurization energy efficiency value ranges from 0.22 kg/(kW·h) to 0.96 kg/(kW·h), and changes in direct proportion with the inlet SO₂ concentration, changes in inverse proportion with the number of spray layer combinations, liquid-gas ratio and inlet flue gas temperature, with the inlet flue gas volume and the flue gas flow rate in the tower rises first and then decreases. This study provides a reference for desulfurization technology evaluation and energy-saving operation of desulfurization system.

Key words: wet desulphurization tower, numerical simulation, desulphurization energy efficiency value, energy efficiency index law

中图分类号:

TK16

冷亚娟,胡蕊,崔琳,董勇. 湿法烟气脱硫塔能效特性研究[J]. 发电技术, 2020, 41(5): 543-551.

Yajuan LENG,Rui HU,Lin CUI,Yong DONG. Study on Energy Efficiency Characteristics of Wet Flue Gas Desulfurization Tower[J]. Power Generation Technology, 2020, 41(5): 543-551.

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湿法烟气脱硫塔能效特性研究

Study on Energy Efficiency Characteristics of Wet Flue Gas Desulfurization Tower

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