钙基脱氯剂脱除重整高温烟气中HCl的研究  

Study on Removal of HCl From Reforming High Temperature Flue Gas by Calcium-based Dechlorination Agent

作　　者：刘聪[1] 单红飞[1] LIU Cong;SAN Hong-fei(Shenyang Sanju Kaite Catalyst Co.,Ltd.,Shenyang Liaoning 110144,China)

机构地区：[1]沈阳三聚凯特催化剂有限公司,辽宁沈阳110144

出　　处：《辽宁化工》2024年第1期65-67,73,共4页Liaoning Chemical Industry

摘　　要：重整催化剂的再生过程主要为:卸料、烧焦、氧氯化、焙烧、冷却、隔离等步骤,其中烧焦和氧氯化为关键步骤。重整催化剂运行一定时间因表面积碳结焦而失活,“烧焦”是在氧气存在和高温条件下将催化剂上的积碳转化为二氧化碳,随着循环气带走,此过程中也伴随着催化剂上的关键组分氯的脱附,并以氯化氢的形式存在于循环气中。钙系脱氯剂使用精度高,脱氯效果好,在市场上广泛应用。实验以氢氧化钙和碳酸钙为主要活性组分,辅助加入其他提高脱氯效果的金属元素,增加金属直接协同作用,达到提高脱氯效果的目的。采用滚球成型的方式,对脱氯剂进行成型,可以有效保护活性组分的孔结构,通过脱氯评价对实验结果验证,使用后样品的氯含量可达36%以上。The regenerative process of the reforming catalyst mainly includes unloading,charring,oxychlorination,calcination,cooling,isolation and so on,wherein the charring and oxygenation are key steps.When the reforming catalyst runs for a certain period of time,it is deactivated due to surface carbon coking."Charring"means that the carbon deposited on the catalyst is converted into carbon dioxide in the presence of oxygen and at high temperature,which is taken away with the circulating gas.In this process,the key component chlorine on the catalyst is also desorbed and exists in the circulating gas in the form of hydrogen chloride.Calcium-based dechlorination agents have high accuracy and good dechlorination effect,and are widely used in the market.In the experiment,calcium hydroxide and calcium carbonate were used as the main active components,and other metal elements were added to improve the dechlorination effect,so as to increase the direct synergistic effect of metals and achieve the purpose of improving the dechlorination effect.The dechlorination agent was molded by ball molding,which could effectively protect the pore structure of active components.The experimental results were verified by dechlorination evaluation,and the chlorine content of the samples after use could reach more than 36%.

关 键 词：高温烟气 脱氯剂 钙基 

分 类 号：TQ115[化学工程—无机化工]