木屑焚烧过程中氯化氢排放特性研究  

EMISSION CHARACTERS OF HCl DURING SAWDUST INCINERATION

作　　者：蒋旭光[1] 李香排[1] 池涌[1] 严建华[1] 

机构地区：[1]浙江大学热能工程研究所能源清洁利用与环境工程教育部重点试验室,浙江杭州310027

出　　处：《燃料化学学报》2004年第3期307-311,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金重点基金(59836210);国家重点基础研究发展规划项目(G1999022211 02)~~

摘　　要：在小型管式炉进行了含氯垃圾(木屑)中氯化物析出试验,研究了氯析出过程中的几个因素(燃烧温度、停留时间、燃烧气氛、烟气中水蒸气含量)对反应的影响,确定了木屑反应的动力学方程式。得出如下结论:燃烧过程中Cl HCl的转化率随燃烧温度的升高而显著增加;随停留时间的增加,HCl的析出存在两个明显的析出峰,这就清楚地说明至少有两种以上形式的氯存在于木屑中。氧化性气氛对氯化物生成影响不大,随炉内气氛由弱还原性气氛向强还原性气氛的转化,氯析出率明显降低;水蒸气的存在明显加速垃圾中氯的析出。木屑燃烧过程中,氯析出反应为零阶反应。Chloride emission character of sawdust incineration was studied using a fixed bed reactor. The effects of combustion temperature, retention time, combustion atmosphere, content of steam on reaction rate were investigated. From experimental results, the kinetic equation was established. The results also demonstrate that Cl-HCl conversion rate increases as combustion temperature rises during combustion. With the increment of retention time, two peaks exist in the emission curve, which suggest that more than two kinds of chlorine exist in the sawdust. There is little effect of oxidative atmosphere on chloride emission. When the reductive atmosphere changes from weak to strong, Cl-HCl conversion rate decreases rapidly. And the existence of steam can accelerate the release of chlorine. The reaction order of sawdust combustion is zero.

关 键 词：木屑 HCL 温度 燃烧气氛 反应动力学 

分 类 号：TQ534[化学工程—煤化学工程]