垃圾焚烧烟气净化系统危废减量技术路线探索  

Exploration of Hazardous Waste Reduction Technology Route for Waste Incineration Flue Gas Purification System

作　　者：艾璞 华耀锋 李昌斌 高重乐 符向阳 AI Pu;HUA Yaofeng;LI Changbin;GAO Chongle;FU Xiangyang(Xi'an LongKing Environmental Protection Technology Co.,Ltd.,Xi'an Shaanxi 710075,China)

机构地区：[1]西安龙净环保科技有限公司,陕西西安710075

出　　处：《水泥技术》2025年第1期9-15,共7页Cement Technology

摘　　要：常规的垃圾焚烧飞灰处置技术普遍存在能耗较大、成本较高、生成的二次飞灰需进一步处置的问题。分析了垃圾焚烧烟气二噁英的生成机理及垃圾焚烧飞灰作为危废的界定,介绍了传统典型的“SNCR+半干法+干法+活性炭喷射+布袋除尘器+SCR脱硝”烟气净化技术路线,提出了一种新的可大幅降低垃圾焚烧烟气净化过程中危废减量的技术路线。通过在余热锅炉高温段增设高温电除尘器,将单一布袋除尘器收尘增加为三级收尘,高温电除尘器收集粉尘为固废、一级布袋除尘器收集粉尘为危废、二级布袋除尘器收集粉尘为固废,使危废产生量大幅减少。浙江某1000t/d处理量的垃圾焚烧发电厂应用两条技术路线前后的经济性分析表明,采用新技术路线后,危废减量达84.37%,年处理成本由638.4万元减至70.0万元,经济效益显著。The conventional waste incineration fly ash disposal technology generally has the problems of high energy consumption,high cost,and the need for further disposal of the generated secondary fly ash.The generation mechanism of dioxins in waste incineration flue gas and the definition of waste incineration fly ash as hazardous waste were analyzed.The traditional typical flue gas purification technology route of"SNCR+semi dry process+dry process+activated carbon injection+bag filter+SCR denitrification"was introduced,and a new technology route that can significantly reduce the reduction of hazardous waste in the process of waste incineration flue gas purification was proposed.By adding a high-temperature electrostatic precipitator in the high-temperature section of the waste heat boiler,the dust collection of a single bag filter is increased to three-stage dust collection.The hightemperature electrostatic precipitator collects dust as solid waste,the first stage bag filter collects dust as hazardous waste,and the second stage bag filter collects dust as solid waste,significantly reducing the production of hazardous waste.The economic analysis of a 1000t/d waste incineration power plant in Zhejiang Province before and after applying two technical routes shows that after adopting the new technology route,the reduction of hazardous waste reaches 84.37%,and the annual treatment cost is reduced from 6.384 million yuan to 0.7 million yuan,with significant economic benefits.

关 键 词：垃圾焚烧 二噁英 高温电除尘器 危废减量 技术路线 

分 类 号：TQ172.9[化学工程—水泥工业]