活性炭孔径和表面性质对H_(2)S吸附脱除的影响  

Effect of Pore Size and Surface Properties of Activated Carbon on H_(2)S Adsorption and Removal

作　　者：汤吉昀 陈娟[1] 张肖阳 白春燕 崔琳[1] 董勇[1] Tang Jiyun;Chen Juan;Zhang Xiaoyang;Bai Chunyan;Cui Lin;Dong Yong(National Engineering Laboratory of Coal-Fired Pollution Reduction,Shandong University,Ji’nan 250061,China;Department of Physics,Changji University,Changji 831100,China)

机构地区：[1]山东大学燃煤污染物减排国家工程实验室,济南250061 [2]昌吉学院物理系,昌吉831100

出　　处：《燃烧科学与技术》2022年第6期708-714,共7页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51976108);昌吉学院教科研项目(21KY007);新疆-天山青年计划资助项目(2018Q115).

摘　　要：利用模拟和试验的手段,研究了活性炭孔隙结构和Fe_(2)O_(3)改性对H2S吸附脱除的影响.结果表明,在狭缝孔活性炭模型内,H2S在其中的吸附呈现Ⅰ、Ⅳ吸附类型.Ⅰ型吸附主要受孔容的影响;Ⅳ型吸附易发生毛细凝聚现象.负载不同Fe_(2)O_(3)的活性炭在不同温度的研究结果表明,在180℃时负载量为9%的活性炭对H2S的脱除效率高达96%;当温度超过180℃,过氧化效率进一步升高至99.83%,但穿透时间缩短,Fe_(2)O_(3)发生不可逆的硫化反应,导致吸附剂失活程度更深.The effects of pore structure of activated carbon and Fe_(2)O_(3)modification on H_(2)S removal were studied.The numerical results showed that there are two types(Ⅰ,Ⅳ)of the adsorption of H2S in different pores of acti-vated carbon.TypeⅠis mainly affected by pore volume.Unlikely,typeⅣis prone to capillary condensation.Activated carbon with different Fe_(2)O_(3)loadings were studied at various temperatures.The results showed that the removal efficiency of H2S by activated carbon with 9%Fe_(2)O_(3)loading at 180℃was over 96%.When the tempera-ture exceeded 180℃,the peroxide efficiency further increased to 99.83%.The breakthrough time of the process was shortened,and the irreversible vulcanization reaction of Fe2O3 occurred,leading to deeper deactivation of adsorbent.

关 键 词：活性炭 孔径 表面 吸附(作用) H_(2)S 脱除 

分 类 号：TK16[动力工程及工程热物理—热能工程]