燃煤电厂脱硫系统石膏脱水研究  

Study on gypsum dehydration in desulfurization system of coal-fired power plants

作　　者：柳哲明 钱伟 徐豪 梁成思 LIU Zheming;QIAN Wei;XU Hao;LIANG Chengsi(Zhejiang Energy Changxing Power Generation Co.,Ltd.,Huzhou 313100,China;Zhejiang Energy R&D Institute,Hangzhou 311121,China)

机构地区：[1]浙江浙能长兴发电有限公司,浙江湖州313100 [2]浙江浙能技术研究院有限公司,浙江杭州311121

出　　处：《能源工程》2024年第5期81-85,共5页Energy Engineering

摘　　要：石灰石-石膏法烟气脱硫技术被广泛应用于燃煤电厂,主要副产物是脱硫石膏,主要成分为硫酸钙的固体废弃物。石膏脱水是脱硫石膏资源化利用的关键,受限于设备运行、冲洗水品质、脱硫剂品质等多方面原因,脱硫石膏的纯度不高或结晶不好,导致石膏难以脱水。本文以浙江省内多个燃煤机组为例,研究了脱硫系统石膏脱水的主要影响因素,发现多因素影响下石膏品质波动是影响石膏资源化利用的重要原因,提出了通过分级利用和精细调控的方法提高脱硫石膏资源化利用率,保证燃煤电厂脱硫系统的安全稳定运行。The limestone gypsum flue gas desulfurization technology is widely used in coal-fired power plants,and the main byproduct is desulfurization gypsum,a solid waste mainly composed of calcium sulfate.Gypsum dehydration is the key to the resource utilization of desulfurization gypsum.Due to various factors such as equipment operation,flushing water quality,and desulfurizer quality,the low purity or poor crystallization of desulfurization gypsum makes it difficult to dehydrate.This article takes multiple coal-fired units in Zhejiang Province as an example to study the main influencing factors of gypsum dehydration in desulfurization systems.It is found that the fluctuation of gypsum quality is an important reason for reducing the utilization rate of gypsum resources.It is proposed to improve the utilization rate of desulfurization gypsum resources through graded utilization and regulation to ensure the safe and stable operation of desulfurization systems in coal-fired power plants.

关 键 词：燃煤电厂 脱硫系统 石膏脱水 

分 类 号：TM621[电气工程—电力系统及自动化]