煤质技术2025，Vol.40Issue(6)：55-60,67,7.DOI:10.3969/j.issn.1007-7677.2025.06.007
高炉煤气精脱硫催化剂抗氯中毒调控策略探究
Discussion on regulating strategies for the anti-chlorine poisoning of blast furnace gas fine desulfurization catalysts
摘要
Abstract
The pollution control in the steel industry should focus on the terminal sulfur emission control of blast fur-nace gas,with the core of reduction of organic sulfides such as COS at the source.Based on the hydrolysis catalytic pathway,COS and gaseous H2O are directionally converted into CO2 and H2 S on the catalyst surface to achieve desul-furization.However,the sulfur poisoning induced by oxygen species and the synergistic corrosion of HCl in the system constitute a dual constraint:the oxygen environment promotes the oxidation of H2 S to elemental sulfur and sulfate,which covers the active sites,while HCl erodes the metal active centers through strong adsorption(formation of M-Cl bonds)and weakens the catalyst's anti-sulfur performance.This mechanism shares commonalities with the active site collapse induced by Cl-in the methanol synthesis system and the deactivation of precious metals-chlorides in the combustion of chlorinated VOCs.The regulation strategies include:optimizing the Cl-adsorption energy barrier on the catalyst surface to inhibit chemical bonding;constructing an oxidation conversion channel for Cl-to Cl2 to pre-vent accumulation;inhibiting surface migration to isolate Cl-from active sites.The selection of regulation schemes needs to take into account the principles and conditions of the hydrolysis reaction,ultimately achieving the coordina-ted optimization of catalytic hydrolysis and anti-poisoning performance under complex operating conditions(O2,H2O,Cl/S species).关键词
高炉煤气/精脱硫催化剂/抗氯中毒性能/调控策略/水解反应/氯化氢Key words
blast furnace gas/deep desulfurization catalyst/anti-chlorine poisoning performance/regulating strategy/hydrolysis reaction/hydrogen chloride分类
化学化工引用本文复制引用
孙春凯,曹强..高炉煤气精脱硫催化剂抗氯中毒调控策略探究[J].煤质技术,2025,40(6):55-60,67,7.基金项目
煤炭科学技术研究院有限公司新产品新工艺开发基金资助项目(2025CG-MH-01) （2025CG-MH-01）
