Sulfidation/regeneration multicycle testing of nickelmodified ZnFe_(2)O_(4)desulphurization sorbent  

作　　者：Wei LI Jinju GUO Jiejie HUANG Jiaotao ZHAO 

机构地区：[1]Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China

出　　处：《Frontiers of Chemical Science and Engineering》2010年第4期435-440,共6页化学科学与工程前沿（英文版）

基　　金：supported by the State Key Development Program for Basic Research(973 Program)of China(Grant No.2005CB221203);the National Natural Science Foundation of China(Grant No.20706055).

摘　　要：A commercial metal oxide sorbent for the desulphurization of coal-derived gas requires high desulphurization reactivity,mechanical strength,ability to regenerate,and stability to endure many sulfidationregeneration cycles.In this paper,the sulfur capacity and multiple cycles of a nickel-modified ZnFe_(2)O_(4)sorbent prepared by the sol-gel auto-combustion method were measured in a fixed-bed reactor at middle temperature of 300℃(sulfidation temperature)and 500℃(regeneration temperature).Also,the BET surface area,pore volume,average pore diameter and X-ray diffraction(XRD)patterns of the sorbent through multicycles were studied.Multicycle runs indicate that the sulfidation reactivity decreases slightly during the second cycle and keeps steady in the following cycles.The results indicate that the nickel-modified ZnFe_(2)O_(4)keeps high reactivity and structural stability in the multicycle testing of sulfidation/regeneration.

关 键 词：hot gas desulphurization nickel-modified ZnFe_(2)O_(4) sulfidation/regeneration 

分 类 号：TG1[金属学及工艺—金属学]