竹炭低温脱除SO_2的试验研究  

Experimental Study on SO_2 Removal by Bamboo Charcoal at Low Temperatures

作　　者：谭增强[1] 刘豪[1] 邱建荣[1] 曾汉才[1] 杨辉[1] 王宗华[1] 王子剑[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《动力工程学报》2010年第11期883-888,共6页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(50525619;50976041;50721005)

摘　　要：对竹炭进行了吸附脱除SO2的试验,初步研究了竹炭对燃煤污染物SO2的脱除效果,分析了温度、粒径、吸附剂质量与气体流量之比(W/F)、初始SO2质量分数、氧气体积分数等对竹炭吸附脱除SO2效率的影响,并对脱硫后的竹炭进行了再生分析.结果表明:在低温环境下,竹炭脱除SO2主要是物理吸附作用,同时存在部分化学吸附,竹炭对SO2的吸收效率可达90%以上;减小竹炭颗粒粒径有利于提高SO2的脱除效率,烟气中的氧气在一定体积分数范围内有利于竹炭脱除SO2;在400℃氮气保护下加热,再生效果最好.SO_2 removal experiments by ordinary bamboo charcoal（BC） were carried out to study the removal effect of BC for SO_2 pollutants from coal burning.The influence of temperature,particle size,W/F of BC,initial SO_2 mass fraction, oxygen volume fraction etc.on SO_2 removal efficiency was analyzed,while an analysis on regeneration of the used BC performed.Results show that SO_2 removal by BC at low temperatures is attributed mainly to physical adsorption,partially to chemical adsorption activity.The removal efficiency of BC for SO_2 can reach up to 90%,which may be improved by reducing the particle size;oxygen is beneficial to SO_2 removal within a certain volume fraction range.Best regeneration effect of BC can be obtained when it is heated at 400 ℃ and protected by nitrogen gas.

关 键 词：竹炭 SO2脱除 粒径 初始SO2质量分数 氧气 吸附 穿透时间 再生 

分 类 号：X701[环境科学与工程—环境工程]