摘要
对中国石化镇海炼化分公司1.20 Mt/a焦化汽油加氢装置进行改造,加工二烯烃含量高的C_(5)抽余油。针对运行过程中出现的C_(5)抽余油预加氢反应器无温升及反应产物中二烯烃含量上升等不正常情况进行分析,初步判断是原料中N,N-二甲基甲酰胺(DMF)、二乙醇胺(DEA)等杂质导致催化剂发生可逆性失活。对DMF水解反应及热力学、DEA与H 2S反应进行分析并进行试验验证,结果表明,反应体系中的DMF、DEA等杂质会造成催化剂的可逆失活。根据试验结果采取针对性措施,装置恢复正常运行。
The 1.20 Mt/a coker gasoline hydrogenation unit of SINOPEC Zhenhai Refining and Chemical Company was reformed to process C_(5) raffinate with high diene content.The abnormal conditions such as no temperature rise in the pre-hydrogenation reactor(R200)of C_(5) raffinate and the increase of diene content in the reaction product were analyzed.The initial judgment was that the impurities such as DMF and DEA in the raw material caused the reversible deactivation of the catalyst.The thermodynamics of DMF hydrolysis reaction,the reaction of DEA and hydrogen sulfide were analyzed and verified by experiments.The results showed that the impurities in the reaction system such as DMF and DEA could cause the reversible deactivation of the catalyst.According to the test results,the corresponding measures were put forward to restore the normal operation of the unit.
作者
郭守权
李澜鹏
Guo Shouquan;Li Lanpeng(SINOPEC Zhenhai Refining and Chemical Company,Ningbo,Zhejiang 315200;SINOPEC Dalian(Fushun)Research Institute of Petroleum and Petrochemicals)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2021年第8期37-41,共5页
Petroleum Processing and Petrochemicals
关键词
C_(5)抽余油
加氢
热力学
副反应
C_(5)raffinate
hydrogenation
thermodynamics
side reaction
