燃煤锅炉烟气中SO_3的生成、危害及控制技术研究进展  

PROGRESS IN RESEARCH ON FORMATION,HARM AND CONTROL TECHNIQUE OF SO_3 IN FLUE GAS OF COAL-FIRED BOILER

作　　者：刘宇[1] 单广波[1] 闫松[1] 史作然[1] 

机构地区：[1]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《环境工程》2016年第12期93-97,共5页Environmental Engineering

基　　金：中国石油化工集团公司资助项目(CLY15059)

摘　　要：SO_3是燃煤锅炉烟气中的污染物之一,会造成烟气酸露点升高、空气预热器堵塞腐蚀、"烟羽"现象等,并且降低选择性脱硝催化剂的活性和锅炉的脱汞效率,危害设备安全和大气环境。介绍了燃煤锅炉中SO_3的主要生成途径、危害、控制方法以及SO_3的控制政策。用于燃煤锅炉中SO_3的控制方法有降低燃煤硫含量,采用ROFA燃烧技术,炉内喷碱性吸收剂,炉后喷碱性吸收剂,除尘器前喷氨和使用湿式电除尘器等。SO_3is one of pollutants in flue gas of coal-fired boiler. It threats the safety of equipment and atmospheric environment as a result of raising the acid gas dew point,corroding and blocking the air preheater,smoke plume,deactivating the activity of SCR catalyst and reducing the mercury removal efficiency. The paper described the formation,harm,control method and policies of SO_3 in flue gas of coal-fired boiler. Reducing the sulfur content in the coal,adopting the ROFA technology,injecting alkalinity absorbent in furnace or rear,ammonia injection in front of dust remover and wet electrical dust precipitator（WESP） are common treatment methods of SO_3 in coal-fired boiler.

关 键 词：燃煤锅炉 烟气 SO3 控制技术 

分 类 号：X701[环境科学与工程—环境工程] X503