期刊论文

Preparation of amorphous CuO/MCM-41 for deep removal of H_2S

Ren, Z.-D.

中文

现代化工

0253-4320

2016

36

3

125-128

10.16606/j.cnki.issn0253-4320.2016.03.031

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）；

本校为第一且通讯机构

针对目前负载型金属氧化物在深度脱除H_2 S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CuO/MCM-41吸附剂,减小了CuO粒径,改善了载体孔结构堵塞情况。结果表明,非晶态CuO/MCM-41吸附剂对H_2 S脱除效果较好,能够使净化后H_2 S质量浓度小于1 mg/m~3,吸附容量达到12.5 mg(H_2 S)/(g吸附剂),是MCM-41的24倍,比常规CuO/AC高1.3倍。在此基础上,考察了CuO负载量、氧体积分数和吸附温度的影响。结果表明,当CuO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 H2S, 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 CuO/MCM-41 adsorbent is prepared by coordination method. The obtained CuO/MCM-41 adsorbent has small particle size of CuO and improved clogging of the carrier hole. The results show that the amorphous CuO/MCM-41 adsorbent is effective for the removal of H2S. The concentration of H2S is less than 1 mg/m3 after treatment by CuO/MCM-41 adsorbent....