焚烧飞灰旋风熔融炉的热态熔融试验  

Hot State Melting Tests of a Swril-Melting Furnace for Waste Incinerator Fly Ash

作　　者：王学涛[1] 金保升[2] 赵丹娜[3] 徐斌[1] 仲兆平[2] 李延兵[2] 

机构地区：[1]河南科技大学车辆与动力工程学院,洛阳471003 [2]东南大学洁净煤发电及燃烧技术教育部重点实验室,南京210096 [3]河南科技大学材料学院,洛阳471003

出　　处：《动力工程》2007年第5期777-780,796,共5页Power Engineering

基　　金：教育部高等学校博士点基金资助项目(20030286005);江苏省建设系统科技计划资助项目(JS200311);河南科技大学博士科研基金(09001135)

摘　　要：在旋风熔融炉上,对焚烧飞灰进行热态熔融试验,用SEM研究了飞灰焚烧后的微观形貌,用XRD研究了矿物组成特性,用TCLP研究了浸出毒性。结果表明:在1400℃条件下,试样已完全玻璃化,熔渣多以无定形玻璃态物质为主,质地均匀,结构紧凑致密,表面平整且有光泽,且所有的物相均被破坏,较难辨认晶体类型,试样已达到较好的熔融效果;熔融产物中重金属浸出率明显降低,说明旋风熔融可有效地降低飞灰中重金属的浸出毒性,有利于用作飞灰的大规模无害化处理。Hot state melting experiments of incinerator fly ash has been performed in a swirling melting furnace. The micro-appearance of incinerator fly ash was observed by scanning electron microanalysis （SEM）, the mineral components analyzed with X-ray diffraction （XRD）, and the leaching toxicity studied by toxicity characteristic leaching procedure （TCLP）. Results show that samples completely vitrify at 1400℃ ; the slag mainly consisting of amorphous glassy matter; uniform and compact in structure, with a uniform and lustrous surface appearance, all phases broken up and types of crystalls concerned hard to distinguish. The samples have all attained a satisfactory molten condition. The leaching rate of heavy metals from the molten product has reduced noticebly, which means that the toxicity due to heavy metals can effectively be reduced by the swirl melting process and can thus be advantageously applied to detoxicating fly ash on a lage seale.

关 键 词：环境工程学 发电厂 飞灰 焚烧 旋风熔融炉 热态试验 

分 类 号：X705[环境科学与工程—环境工程]