非晶态CuO/MCM-41制备及对H_2S的深度脱除  

Preparation of amorphous Cu O / MCM-41 for deep removal of H_2S

作　　者：朱玉婵[1] 任占海 袁敏[1] 刘毅[1] 岳欢[1] 任占冬[1] 

机构地区：[1]武汉轻工大学化学与环境工程学院,湖北武汉430023 [2]中石油吉林石化分公司,吉林吉林132021

出　　处：《现代化工》2016年第3期125-128,共4页Modern Chemical Industry

基　　金：湖北省自然科学基金项目(2012FFB04803);武汉轻工大学校立科研计划项目(2015d8)

摘　　要：针对目前负载型金属氧化物在深度脱除H_2S过程中存在的吸附剂孔径堵塞和传质限制的问题,通过络合配位法制备了非晶态Cu O/MCM-41吸附剂,减小了Cu O粒径,改善了载体孔结构堵塞情况。结果表明,非晶态Cu O/MCM-41吸附剂对H_2S脱除效果较好,能够使净化后H_2S质量浓度小于1 mg/m^3,吸附容量达到12.5 mg(H_2S)/(g吸附剂),是MCM-41的24倍,比常规Cu O/AC高1.3倍。在此基础上,考察了Cu O负载量、氧体积分数和吸附温度的影响。结果表明,当Cu O负载量为6.4%,氧体积分数为0.4%时,吸附效果最好。在30~90℃范围内,吸附温度对脱除效果的影响呈先下降后上升的趋势,在60℃附近存在物理吸附向化学吸附的转变过程。In the process of deep removal of H_2 S,there are some existing problems involving the pore clogging and mass transfer limitation for the metal oxide loaded adsorbent. To solve these problems,an amorphous Cu O / MCM-41 adsorbent is prepared by coordination method. The obtained Cu O / MCM-41 adsorbent has small particle size of Cu O and improved clogging of the carrier hole. The results show that the amorphous Cu O / MCM-41 adsorbent is effective for the removal of H_2 S. The concentration of H2 S is less than 1 mg / m^3 after treatment by Cu O / MCM-41 adsorbent. The adsorption capacity can reach 12. 5 mg H_2 S / g adsorbent,which is 24 and 1. 3 times higher than that of MCM-41 and the common Cu O / AC,respectively. Moreover,the influences of Cu O loading,oxygen content and temperature on the removal of H_2 S are also investigated. The results demonstrate that the adsorption effect is the best when the Cu O loading is 6. 4%and the oxygen content is 0. 4%. In the range of 30- 90℃,the effect of temperature on the adsorption effect is firstly decreased and then increased. The transformation of physical adsorption to chemical adsorption occurs nearly at 60℃.

关 键 词：H_2S CuO/MCM-41 非晶态 深度脱除 传质 

分 类 号：TQ126.316[化学工程—无机化工]