电石炉尾气脱硫净化工艺的开发  

Development of Desulfurization and Purification Process for Calcium Carbide Furnace Tail Gas

作　　者：王海洋 李辉 李青泽 章先刚 周雄 李林航 袁博 王利勇 贾露 Wang Haiyang;Li Hui;Li Qingze;Zhang Xiangang;Zhou Xiong;Li Linhang;Yuan Bo;Wang Liyong;Jia Lu(Wuhan Kelin Chemical Group Co.,Ltd.,Wuhan 430223,China)

机构地区：[1]武汉科林化工集团有限公司,湖北武汉430223

出　　处：《山东化工》2024年第4期26-29,共4页Shandong Chemical Industry

摘　　要：电石炉尾气中的硫、氧及其他杂质脱除是电石炉尾气综合利用的难题,为此,提出了一种脱硫净化工艺,该工艺采用TSA除杂+水解脱硫+深度脱硫+低温脱氧+脱烃的方法,从而将电石炉尾气中的有机硫及杂质脱除,脱氧采用复合氧化物催化剂脱氧,通过循环控制脱氧反应器入口氧体积含量在0.5%左右,使脱氧反应温升平稳,在低温下降氧进行反应脱除,从而控制催化剂结焦积碳的风险,延长了脱氧催化剂的使用寿命,脱烃采用贵金属催化剂,可在较低温度条件下脱烃。工业实验表明,该工艺可以将气体中的硫化物脱除至0.1 mg/m^(3)以下,氧含量脱除至30μL/L以下,不饱和烃含量<0.1 mg/m^(3),从而达到深度利用的要求。The removal of sulfur,oxygen,and other impurities from the tail gas of calcium carbide furnace is a difficult problem in the comprehensive utilization of calcium carbide furnace tail gas.Therefore,a desulfurization and purification process is proposed,which uses TSA impurity removal+hydrolysis desulfurization+deep desulfurization+low-temperature deoxygenation+hydrocarbon removal methods to remove organic sulfur and impurities from the tail gas of calcium carbide furnace.The deoxygenation is carried out using a composite oxide catalyst,and the oxygen content at the inlet of the deoxygenation reactor is controlled to be around 0.5%through circulation,By stabilizing the temperature rise of the deoxidation reaction and reducing oxygen at low temperatures,the risk of catalyst coking and carbon deposition is controlled,extending the service life of the deoxidation catalyst.Precious metal catalysts are used for dehydrogenation,which can be carried out at lower temperature conditions.Industrial experiments have shown that this process can remove sulfides from gases to below 0.1 mg/m^(3) and oxygen content to 30% μL/L,the content of unsaturated hydrocarbons is less than 0.1 mg/m^(3),thus meeting the requirements for deep utilization.

关 键 词：电石炉尾气 脱氧 脱硫净化 催化剂 

分 类 号：TQ09[化学工程]