900 MW机组烟气三氧化硫脱除控制系统改造  

Renovation of Control System for Removing Sulfur Trioxide from 900 MW Unit Flue Gas

作　　者：王珏 WANG Jue(Waigaoqiao Second Power Generation Co.,Ltd.)

机构地区：[1]外高桥第二发电有限责任公司

出　　处：《上海节能》2023年第8期1204-1208,共5页Shanghai Energy Saving

摘　　要：三氧化硫(SO3)是造成燃煤机组空预器堵塞的主要原因之一,通过向SCR反应器出口烟道内喷入碱粉可以达到脱除烟气中三氧化硫的目的。本文以外高桥第二发电厂烟气三氧化硫脱除控制系统改造为例,详细介绍了西门子DCS控制系统在外二实际应用情况,通过改造有效缓解了空预器堵塞问题,对机组安全、环保、节能等起到了重要的作用。Sulfur trioxide(SO3)is one of the main causes of blockage in the air preheater of coal-fired units.By injecting alkali powder into the outlet flue of the SCR reactor,sulfur trioxide can be removed from the flue gas.This article takes the transformation of the flue gas sulfur trioxide removal control system in the second power plant of Gaoqiao as an example,and provides a detailed introduction to the practical application of Siemens DCS control system in the second power plant.Through the transformation,the problem of air preheater blockage has been effectively alleviated,playing an important role in unit safety,environmental protection,energy conservation,and other aspects.

关 键 词：燃煤机组 三氧化硫脱除 DCS改造 

分 类 号：X773[环境科学与工程—环境工程]