摘要
煤气化过程中产生的H_(2)S气体易造成下游设备腐蚀、催化剂中毒和环境污染等问题,分子筛负载型脱硫剂由于能够使活性组分高度分散,促进反应传质,在H_(2)S净化领域应用广泛。本文以分子筛孔径大小和孔道结构特征为依据,分别介绍了微孔(d<2nm)、介孔(2nm<d<50nm)、大孔(d>50nm)和多级孔分子筛及具备分子筛结构特性材料为载体的脱硫剂在高温煤气吸附H_(2)S气体中的应用现状,分析探讨了不同类型分子筛复合脱硫剂目前存在的优点与不足。最后,从不同分子筛载体的结构特点、分子筛复合脱硫剂净化H_(2)S现状及性能提升、脱硫功能化和绿色制备工艺等方面进行了总结和展望,以期能够为今后分子筛基负载型脱硫剂的开发与应用提供有益参考。
The H_(2)S gas generated in coal gasification is easy to cause problems such as downstream equipment corrosion,catalyst poisoning and environmental pollution.Molecular sieve supported desulfurizer has been widely used in H_(2)S purification because it could highly disperse the active components and promote mass transfer during the reaction.Based on the pore size and pore structure characteristics of molecular sieve,this paper introduced the application status of micropore(d<2nm),mesopore(2nm<d<50nm),macropore(d>50nm)and hierarchical porous molecular sieve,as well as the desulfurizer with molecular sieve structural characteristics as the carrier in the adsorption of H_(2)S gas from high temperature gas.The advantages and disadvantages of different types of molecular sieve-based desulfurizers were analyzed and discussed.Finally,the structural characteristics of different molecular sieve carriers,the research status and performance improvement of molecular sieve-based desulfurizers for H_(2)S purification,desulfurization functionalization and green preparation processes were concluded and prospected to provide a useful reference for the development and application of molecular sieve-based supported desulfurizer in the future.
作者
龙彩梅
武帅山
王建成
米杰
冯宇
LONG Caimei;WU Shuaishan;WANG Jiancheng;MI Jie;FENG Yu(State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Key Laboratory of Coal Science and Technology,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2023年第11期5943-5955,共13页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(21908156,21978188)
中国博士后科学基金(2021T140431)
山西省自然科学基金(201901D211099,201901D211088)。
关键词
高温煤气
脱硫
载体
气化
分子筛
hot coal gas
desulfurization
support
gasification
molecular sieves
