催化裂化催化剂铁中毒现象分析与解决方案  

Analysis and Solution of Iron Poisoning in Catalytic Cracking Catalyst

作　　者：李雪礼 段宏昌 谭争国 潘志爽 张先锐 Li Xueli;Duan Hongchang;Tan Zhengguo;Pan Zhishuang;Zhang Xianrui(Shaanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry and Chemical Engineering,Yan’an University,Shaanxi Yan’an 716000,China;Petrochina Lanzhou Petrochemical Research Center,Lanzhou 730060,China)

机构地区：[1]陕西省化学反应工程重点实验室,延安大学化学与化工学院,陕西延安716000 [2]中国石油兰州化工研究中心,兰州730060

出　　处：《化学工业与工程》2021年第4期37-43,共7页Chemical Industry and Engineering

基　　金：延安大学博士科研启动项目(YDBK2018-43);大学生创新创业训练计划项目(D2019034);延安市科技局科技创新计划(2019ZCGY-001);陕西省自然科学基础研究计划(2020JM-549)。

摘　　要：催化裂化作为最重要的原油二次加工手段之一,是炼厂生产轻质油品、提高经济收入的关键装置。催化装置的稳定运行直接影响炼厂的经济效益。针对某炼厂催化装置出现产品分布变差的问题,从原料性质、平衡剂性质、平衡剂评价等几方面进行了系统分析,结果表明是由催化原料铁离子含量过高引起的平衡剂重金属中毒。通过提高反应温度,降低加工量,提高新鲜剂加注量,高品质平衡剂快速置换,提高样品分析频次,使用抗铁污染催化剂等措施,缓解了催化原料铁含量较高造成的不利影响,为其他炼厂遭遇铁中毒事件时提供参考解决方案。Catalytic cracking(FCC)is one of the most important means of crude oil secondary processing,is the key unit to produce light oil and increase economic income in refinery.The stable operation of FCC unit directly affects the economic benefit of refinery.Aiming at the problem of poor product distribution in catalytic unit of a refinery,the properties of raw materials,the properties of balancing agents and the evaluation of balancing agents were analyzed systematically.The results showed that the heavy metal poisoning was caused by the high content of iron ion in the raw material.By increasing the reaction temperature,reducing the processing capacity,increasing the amount of fresh agent,quickly replacing the high-quality balance agent,increasing the sample analysis frequency,and using the anti-iron pollution catalyst,etc.the adverse effect caused by high iron content in raw material was alleviated.Reference solutions for other refineries in case of iron poisoning were provided.

关 键 词：催化裂化 平衡剂 产品分布 铁中毒 解决方案 

分 类 号：O643.36[理学—物理化学]