Desulfurization performance of iron-manganese-based sorbent for hot coal gas  

作　　者：Xiurong REN Weiren BAO Fan LI Liping CHANG Kechang XIE 

机构地区：[1]Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China

出　　处：《Frontiers of Chemical Science and Engineering》2010年第4期429-434,共6页化学科学与工程前沿（英文版）

基　　金：support of the National Basic Research Program of China(2005CB221203);the National Natural Science Foundation of China(Grant No.20976117);Shanxi Province Natural Science Foundation(2010011014-3);Shanxi Province Basic Conditions Platform for Science and Technology Project(2010091015).

摘　　要：A series of iron-manganese-based sorbents were prepared by co-precipitation and physical mixing method,and used for H_(2)S removal from hot coal gas.The sulfidation tests were carried out in a fixed-bed reactor with space velocity of 2000 h^(-1)(STP).The results show that the suitable addition of manganese oxide in iron-based sorbent can decrease H_(2)S and COS concentration in exit before breakthrough due to its simultaneous reaction capability with H_(2)S and COS.Fe3O4 and MnO are the initial active components in iron-manganese-based sorbent,and FeO and Fe are active components formed by reduction during sulfidation.The crystal phases of iron affect obviously their desulfurization capacity.The reducibility of sorbent changes with the content of MnO in sorbent.S7F3M and S3F7M have bigger sulfur capacities(32.68 and 32.30 gS/100 g total active component),while S5F5M has smaller sulfur capacity(21.92 gS/100 g total active component).S7F3M sorbent has stable sulfidation performance in three sulfidation-regeneration cycles and no apparent structure degradation.The sulfidation performance of ironmanganese-based sorbent is also related with its specific surface area and pore volume.

关 键 词：iron-manganese-based sorbent sulfidation performance regeneration hot coal gas 

分 类 号：TG1[金属学及工艺—金属学]