摘要
某炼油厂为优化全厂产品结构,对其对二甲苯装置进行换剂适应性改造,异构化路线从乙苯转化型改为脱乙基型,在减少芳烃损失的同时,将芳烃资源最大化转化为对二甲苯和苯,提高芳烃资源利用率,同时回收副产的富乙烷气体作为高附加值的乙烯原料,实现效益最大化。改造策略包括催化剂功能优化、工艺流程调整、热联合等,以期为同类装置的改造提供一些借鉴。
In order to optimize the product structure of a refinery,the xylene unit was modified with the adaptability of changing catalyst,and the isomerization route was changed from ethylbenzene conversion type to de-ethylation type.While reducing the loss of aromatics,the source of aromatics could be maximized by converting them into p-xylene and benzene,thus increasing the utilization ratio of aromatics.At the same time,ethane-rich by-product gas was recovered as high value-added ethylene feedstock to achieve maximum benefits.The transformation strategy included the optimization of catalyst function,process flow adjustment and thermal integration,which could provide some references for the transformation of similar units.
作者
周彬
Zhou Bin(SINOPEC Zhenhai Refining and Chemical Company,Ningbo,Zhejiang 315207)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2023年第11期29-33,共5页
Petroleum Processing and Petrochemicals
关键词
装置改造
催化剂
热联合
芳烃资源
对二甲苯
富乙烷气
unit modification
catalyst
thermal integration
aromatic hydrocarbon resources
p-xylene
ethane rich gas
