室燃炉共处置危险废物研究现状及其发展思考

Research status and opinion on the development of co-disposing hazardous waste in suspension firing boiler

室燃炉共处置危险废物作为一种新兴的危险废物焚烧处置技术,具有锅炉资源丰富、改造成本低、废物破坏率高等优点,可缓解危险废物处置能力不足现状。虽然目前国内外已有一些基础研究,但仍存在尚无大规模连续共处置经验、缺少对共处置危险废物时污染物排放规律和对室燃炉性能影响等技术性问题的研究。本文介绍了国内外室燃炉共处置危险废物的研究现状,同时介绍了具有相同处置原理、极具参考价值的室燃炉共处置污水污泥、固体回收废物的研究现状,分析了室燃炉共处置废物燃料时细颗粒物和气体污染物排放规律、重金属元素在不同灰分中的分配比例以及共处置对于锅炉运行工况的影响。最后指出了实现室燃炉共处置危险废物的大规模工业应用必须满足的三项要求,提出了对室燃炉共处置危险废物未来研究重点的思考。

Co-disposal of fossil fuel and hazardous waste in suspension firing boiler is a new hazardous waste incineration technology. The benefits of co-disposal include using the large number of existing suspension firing boilers,lower improvement cost,higher destruction and removal efficiency and solving the lack of hazardous waste incinerators. Although there are already some basic research at home and abroad,it is still lack of continuous large-scale test,the rule of pollutants discharge and the impact on the performance of the boiler during co-disposal. In this paper,research status of co-disposing hazardous waste and conventional fuel in suspension firing boiler were reviewed. The current situation and technical problem of co-disposing municipal sewage sludge or solid recovered fuels were also introduced, which has same principle and great reference value. Emission behavior of fine particles and gaseous pollutant,the proportion of heavy metals in different ash components and the impact on the performance of the boiler during co-disposal were also analyzed. In the end,to realize the application of co-disposal in large-scale,there are three rules must be followed,and there are some key points in the development of co-disposal technology which have to be studied further were raised.