FDFCC-Ⅲ工艺降低SO_x排放量的机理分析  

Analysis of mechanisms of lowing SO_x emission in FDFCC-Ⅲ process

作　　者：闫鸿飞[1] 孟凡东[1] 王龙延[1] 齐文义[1] 

机构地区：[1]中国石化集团洛阳石油化工工程公司,河南省洛阳市471003

出　　处：《炼油技术与工程》2010年第5期25-27,共3页Petroleum Refinery Engineering

摘　　要：首先分析了催化裂化过程中影响SO_x排放量的因素和硫转移剂的基本原理,在此基础上探讨了FDFCC-Ⅲ工艺低SO_x排放量的机理。结果表明:FDFCC-Ⅲ工艺具有明显降低烟气中SO_x排放量的作用,其主要原因是FDFCC-Ⅲ工艺催化剂循环量较同等规模的常规FCC工艺提高较多,使再生催化剂可携带更多的SO_4^(2-)进入反应系统,并最终在还原气氛中转化为H_2S。从机理分析可知FDFCC-Ⅲ工艺降低烟气中SO_x排放具有普遍适用性,从而可为炼油厂控制催化裂化烟气SO_x排放提供一定的手段。The impact factor of SO_x emission in FCC process and sulfur transfer agent are analysed,and the mechanisms of low SO_x emission of flue gas in Flexible Dual-riser Fluid Catalytic Cracking(FDFCC-Ⅲ) process are studied.The results show that FDFCC-Ⅲprocess has a very good performance in reducing SO_x emission in flue gas.The main reasons are that the catalyst circulation rate of FDFCC-Ⅲprocess is much higher than that of conventional FCC unit and the regenerated catalysts can carry over increased amount of SO...

关 键 词：FDFCC-Ⅲ 烟气 SO_x排放 机理 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]