填料塔中Na_2CO_3吸收高浓度H_2S的传质特性  

Mass transfer characteristics of absorption of high concentration of H_2S by sodium carbonate in packed column

作　　者：罗洋[1,2] 盛宇星[1] 曹宏斌[1] 

机构地区：[1]中国科学院过程工程研究所绿色过程与工程重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《环境工程学报》2014年第4期1561-1566,共6页Chinese Journal of Environmental Engineering

基　　金：国家"863"高技术研究发展计划项目(2011AA060904)

摘　　要：在填料吸收塔中考察了Na2CO3溶液吸收高浓度H2S气体的气液传质特性。通过测量填料塔进出口气体中H2S浓度计算了Na2CO3溶液吸收高浓度H2S气体的总体积传质系数(KGa),并研究了进气流速、吸收液流量、吸收温度和吸收液浓度对KGa的影响。结果表明,KGa随Na2CO3浓度、吸收液流量的增加而增加,随吸收温度、进气流速的升高而降低;在高浓度H2S吸收过程中液相传质阻力不能忽略。A study on the absorption of high concentration of H2S by Na2CO3 solution was carried out in a packed column. The overall volumetric mass transfer coefficient（KGa） for the absorption of high concentration of H2S by carbonate solution was estimated at various gas flow rates,liquid loads, temperatures of packed column and concentrations of Na2 CO3 in order to study the mass transfer characteristic in this system. The results showed that KGa increased as the concentration of Na2 CO3 or liquid load increased, and it decreased as the temperature or gas flow rate increased. The liquid mass transfer resistance in the absorption of high concentration H2S could not be ignored.

关 键 词：填料塔 H2S 传质系数吸收 

分 类 号：X511[环境科学与工程—环境工程]