催化剂积炭对逆流连续催化重整反应的影响  

EFFECT OF COKE DEPOSITION OF CATALYST ON COUNTERCURRENT CONTINUOUS CATALYTIC REFORMING REACTION

作　　者：王杰广[1] 马爱增[1] 袁忠勋 盖金祥[3] Wang Jieguang;Ma Aizeng;Yuan Zhongxun;Gai Jinxiang(SINOPEC Research Institute of Petroleum Processing,Beijing100083;SINOPEC Engineering Incorporation;SINOPEC Jinan Company)

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化工程建设有限公司 [3]中国石化济南分公司

出　　处：《石油炼制与化工》2019年第8期1-5,共5页Petroleum Processing and Petrochemicals

基　　金：中国石油化工股份有限公司科技开发合同项目(111103和115066)

摘　　要：在中国石化济南分公司600kta逆流连续催化重整(简称逆流连续重整)工业试验装置上,考察了第四反应器(四反)入口温度和四反催化剂积炭量的关系以及催化剂积炭对逆流连续重整反应规律的影响。结果表明:四反入口温度对四反催化剂积炭量和装置催化剂总积炭量影响很大,降低四反入口温度有利于降低逆流连续重整装置催化剂的总体积炭水平;随着催化剂加权平均积炭量的增加,反应器温降减小,芳烃产率和氢气产率下降明显,环烷烃和烷烃的转化率下降,低碳数环烷烃转化率下降的幅度比高碳数的大,五元环烷烃转化率下降的幅度比六元环烷烃的大,异构烷烃转化率下降的幅度高于正构烷烃,低碳数正构烷烃转化率下降的幅度高于高碳数正构烷烃;逆流连续重整技术优化的方向是控制催化剂的总体积炭水平,尤其要尽可能降低四反的积炭量。The relations between the inlet temperature of the 4 th reactor and its coke content on the catalyst,and the effects of coke on countercurrent continuous catalytic reforming (CCR) reaction were investigated at a 600 kt a countercurrent CCR unit of SINOPEC Jinan Branch Company.The results showed that the inlet temperature of the 4 th reactor had a great influence on its coke amount and total coke amount of the whole reactor system.The lower inlet temperature of the 4 th reactor could reduce the total coke amount of countercurrent CCR;With the increasing of the weighted average coke amount on catalysts,the temperature drop in each reactor reduced,the yield of aromatics and hydrogen apparently decreased,and the conversion of both naphthene and paraffin decreased;and the conversion rates of low carbon number naphthene and C 5 ring naphthene decreased more than that of high carbon number and C 6 ring naphthene,respectively;the conversion rate of iso-paraffin and low carbon number normal- paraffin decreased greater than that of normal-paraffin and high carbon number normal-paraffin,respectively.The optimization direction of countercurrent continuous reforming technology is to control the overall carbon accumulation level on catalyst,especially to reduce the carbon accumulation on the 4 th reactor as far as possible.

关 键 词：逆流连续重整 积炭 环烷烃转化 烷烃转化 

分 类 号：TE624[石油与天然气工程—油气加工工程]