民用解耦燃煤炉中的NO_x和CO同时减排  

Simultaneous reduction of NO_x and CO emissions in domestic decoupling coal-fired stoves

作　　者：韩健 刘新华[1] 何京东 李虹嶙 张楠[1] HAN Jian;LIU Xinhua;HE Jingdong;LI Honglin;ZHANG Nan(State Key Laboratory of Multiphase Complicated Systems, Institute of Process Engineering, Chinese Academy of Sciences,Beijing 100190, China;School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;Chinese Academy of Sciences, Beijing 100864, China)

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]中国科学院大学化学工程学院,北京100049 [3]中国科学院,北京100864

出　　处：《化工学报》2019年第5期1991-1998,共8页CIESC Journal

基　　金：中国科学院A类战略性先导科技专项(XDA21040400)

摘　　要：典型民用解耦燃煤炉具有底部连通的两个分别被称为热解室和燃烧室的并列炉膛,煤炭从热解室上部加入,空气通过热解室底部的倾斜炉排引入。结合煤炭燃烧过程中的氮转移路线与解耦炉中的气体循环流动特征,定性分析了民用解耦燃煤炉中的NO_x和CO同时减排机理,并在此基础上对配风和煤种等因素对NO和CO排放的影响进行了定量实验研究。结果表明,民用解耦燃煤炉特有的结构特征和通风方式有利于NO_x和CO的同时减排,解耦炉具与洁净型煤匹配可显著降低综合污染物排放。A typical civil decoupling coal-fired stove has two parallel furnaces, called a pyrolysis chamber and a combustion chamber, which are connected at the bottom, coal is introduced from the upper part of the pyrolysis chamber, and air is introduced through the inclined grate at the bottom of the pyrolysis chamber. Based on the profound understanding of both the nitrogen transformation route in coal combustion and the characteristics of gas flow circulation in decoupling stoves, the mechanisms of simultaneous reduction of NO x and CO emissions in domestic decoupling coal-fired stoves were qualitatively analyzed in this paper. The influences of draft type and coal property on NO and CO emissions were experimentally studied further. The results indicate that the simultaneous suppression of NO x and CO emissions in a domestic decoupling coal-fired stove can be mainly attributed to its unique geometry structure and draft type. Burning clean briquettes in decoupling stoves helps to reduce pollutant emissions significantly.

关 键 词：煤燃烧 污染 氮氧化物 一氧化碳 民用炉具 

分 类 号：TQ534[化学工程—煤化学工程]