作　　者： ;

机构地区： 昆明理工大学材料与冶金工程学院冶金工程系

出　　处： 《能源工程》 2002年第5期21-24,共4页

摘　　要： 近年来 ,为防止全球气候变暖 ,社会上对环境保护的要求日益严格。尤其是要求城市生活垃圾处理最大限度地采用无害化技术 ,抑制二恶英的排放。能够遏制二恶英产生和排放的无害化城市生活垃圾气化熔融焚烧技术被提出。本技术一般分两类 ,一类为垃圾气化 +灰渣熔融焚烧技术 ,该技术的工艺流程为 :先将城市生活垃圾在 5 0 0～ 6 0 0℃温度下的热解气化制得可燃气体 ,制得的气体再根据用途进一步精制 ,垃圾中 95 %以上的含氯物质经除去后所剩下的含碳灰渣在温度为 130 0℃以上的熔融燃烧设备中进行熔融处理 ,原垃圾中99 8%以上的二恶英可被分解掉 ,无害化熔融渣可以多种用途 ;另一类为垃圾直接气化熔融焚烧技术 ,该技术的工艺流程为 :将垃圾在温度为 135 0～ 15 0 0℃的熔融燃烧设备中进行熔融处理 ,原垃圾中的 99.8%以上的二恶英可被分解掉。文章介绍新型械市生活垃圾气化熔融焚烧技术。 The municipal solid waste (MSW) treatment process is being continuously updated to fulfill the social demand for environmental protection which slows global warming, decreases dioxins emission and reduces environmental load. So the harmless technology of MSW incineration with gasification and ash melting has carried out a great deal of research to solve the problem of dioxin in MSW incineration. Newly there are two kinds of technological process in this harmless technology. One kind is called to the MSW incineration with gasification and ash melting. In this technological process, the char which gasified by the thermal cracking of municipal waste at 500～600℃ is melting burned in melting furnace at more than 1300℃ which removed more than 99.8% of the dioxins contained in waste. At the same time, the slag from the melted ash is reused in a number of ways. The other kind is called to the MSW incineration with direct gasification and ash melting. In this technological process, the MSW has been incinerated with incinerator which operates at 1350～1500℃, and ash can be melted in this incinerator which removed more than 99.8% of the dioxins contained in waste. In this paper, this harmless technology of MSW incineration with gasification and ash melting has been presented.

关 键 词： 城市生活垃圾 气化熔融 焚烧技术 无害化

领　　域： [环境科学与工程]