流化床掺烧生活垃圾及尾气净化实验研究  

Experimental Study on the Co-firing of Municipal Refuse in a Fluidized Bed

作　　者：金保升[1] 董长青[1] 仲兆平[1] 兰计香[1] 周山明[1] 李锋[1] 黄亚继[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室

出　　处：《污染防治技术》2002年第1期1-6,共6页Pollution Control Technology

基　　金：国家教育部科学技术研究重点项目(99174);高等学校重点实验室访问学者基金项目(B001316);国家教育部<跨世纪优秀人才计划>基金项目(K980-026);江苏省教育厅"青蓝工程"基金资助项目(JS9808)。

摘　　要：在一燃煤流化床上进行了掺烧垃圾的实验,研究了不同掺烧比对燃烧效率、SO2、HCl、NO、N2O、二恶英和重金属排放的影响。实验结果表明,随垃圾加入量的增加,飞灰含碳量降低,燃烧效率增加;HCl排放浓度增加,NO和SO2排放量减少,N2O先降低后增加;灰渣中二恶英含量随垃圾加入量的增加而增加;底渣和旋后飞灰中,Cr、Cu、Zn的含量均随垃圾加入量的增加而增加。采用三相流态化净化装置对尾气排放进行了净化处理,当吸收剂为石灰石浆液,浆液浓度为1％,循环倍率为3,喷射速度为5m/s～15m/s,鼓泡管插入深度为140mm时,流态化吸收式垃圾焚烧烟气净化装置的脱硫效率大于90％,脱硝效率在20％～30％之间,脱氯效率大于80％,除尘效率达99％,重金属净化效率大于98％,二恶英净化效率为99％。The co-firing tests of MSW and coal were performed in a circulating fluidized bed paper focused on the influences of the ratio of MSW to coal on the efficiency and the sion of SO2 , HC1, NO, N2 O, Dioxin and heavy metal. Experimental results showed that the iency and HCl emission increased when MSW were fed into the CFB, SO2 and NO emissions eased with MSW increasing. With the ratio of MSW to coal increasing, the N2O emissions eased slowly, Dioxin in the fly ash and slag increased with municipal refuse added. The entration of Cr.Cu.Zn increased in the slag and the outlet of cyclone with municipal solid se increasing. And the results of experimental study of three ohases fluidized absorption ess for flue gas purification in co-combustion are presented also. When the sorbent is stone slurry, the concentration of slurry is 1 % , the circulation rate is 3 , the jet rate is 5 m/s- 15 m/s the immerged depth of bubbling pipe under the slurry is 140 mm, in fluidized absorption lity for flue gas purification in MSW incineration, the desulfurization efficiency is > 90% , the itrification efficiency is 20% -30% , the dechlorination efficiency is > 80% , the removal efficiency ust, heavy metal and dioxions are > 99% , > 98% and 99% respectively.

关 键 词：流化床 生活垃圾 垃圾掺烧 尾气净化 实验研究 垃圾处理 

分 类 号：X705[环境科学与工程—环境工程]