电石渣喷淋吸收烟气二氧化硫工艺及动力学  

Process and kinetics of SO_2 absorption by carbide slag in spray tower

作　　者：刘盛余[1] 能子礼超[1] 邱伟[1] 陆成伟[1] 徐园园[1] 刘建英[1] 

机构地区：[1]成都信息工程学院资源环境学院,大气环境模拟与污染控制四川省省高校重点实验室,四川成都610225

出　　处：《化工学报》2012年第5期1543-1550,共8页CIESC Journal

基　　金：国家自然科学基金项目(21106009);四川省教育厅重大培育项目(09ZZ003);成都信息工程学院中青年学术带头人科研基金(J201110)~~

摘　　要：在喷淋吸收装置中对电石渣浆液吸收SO2进行了系统研究。研究结果表明:脱硫效率随烟气SO2浓度的增加先升高,然后下降;随体系pH的增加而升高,pH从3升到13时,脱硫效率由52.3%升到94.7%;增加浆液电石渣浓度和减小电石渣粒径均有利于SO2的吸收去除;液气比从10L.m-3增加到50L.m-3时,脱硫效率提高了59.9%;以电石渣烟气脱硫的化学反应为基础,建立电石渣烟气脱硫反应动力学模型,总反应级数n=α+β=1.67,反应活化能Ea=51396.59J.mol-1,频率因子k0=0.37894×106(mol.m-3)-0.67.s-1。Absorption process of SO2 by carbide slag slurry in spray tower was studied in this work.The results show that with increase of SO2 concentration in flue gas its removal rate is a volcano curve.When pH value changes from 3 to 13,the removal rate of SO2 goes up from 52.3% to 94.7%.Increasing concentration of carbide slag slurry and decreasing their grain diameter can improve absorption of SO2.When L/G increases from 10 L·m^-3to 50 L·m^-3the removal efficiency puts up by 59.9%,but drops by 14.3% while L/G was continually raised from 50 L·m^-3to 80 L·m^-3A mathematics model is built based on the chemical reaction of desulfurization by carbide slag,the overall reaction order n=α＋β=1.67,the activation energy Ea=51396.59 J·mol-1 and the frequency factor k0=0.37894×10^6（mol·m^-3-0.67·s^-1.

关 键 词：电石渣 喷淋吸收 二氧化硫 动力学 

分 类 号：X511[环境科学与工程—环境工程]