垃圾焚烧炉尾部受热面积灰及其抑制方法分析

江南

垃圾焚烧炉尾部受热面积灰及其抑制方法分析
孙　巍,马增益,严建华,许明磊,王　勤
(浙江大学热能工程研究所能源洁净利用国家重点实验室,浙江杭州310027)
摘　要:针对垃圾焚烧过程出现的尾部受热面积灰问题,分析了其形成的机理,着重分析了碱金属对积灰的影
响,进而回顾了煤及生物质焚烧过程碱金属吸收剂的研究进展。以往的研究结果显示铝硅类矿物质对防止碱
金属积灰有一定的效果,其中高岭土效果较为显著,可尝试作为垃圾焚烧炉内的碱金属脱除剂使用。
关键词:垃圾焚烧;碱金属;积灰;添加剂
中图分类号: X705　　　　　文献标识码:A　　　　　文章编号: 1004 - 3950 (2006) 01 - 0046 - 04
Investiga tion on fouling mechan ism of hea t transfer surfaces in MSW
inc inera tion and controlmethod
SUNWe i,MA Zeng2y i, YAN J ian2hua, XUM ing2le i,WANG Qin
(Clean Energy and Environmental Engineering Key Laboratory ofMOE, ZhejiangUniversity, Hangzhou 310027,China)
Abstract: In this paper, the mechanism of ash deposition of back2end heat transfer surfaces inMSW incineration was
analyzed. The effect of alkalimetalwas emphasized and the studies of alkalimetal sorbent in coal combustion and bio2
mass incineration was summarized. The research revealed thatmineralswhich contained both aluminium and silicon can
mitigate the fouling p roblem caused by alkalimetal. Kaolin ismore effective, and can be used as additive inMSW in2
cineration for alkalimetal removal.
Key words: MSW incineration; alkalimetal; fouling; additive

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