摘要
对乙烯装置汽油分馏塔的技术改造进行探讨,并进行技术经济分析,认为把大型板式塔改为填料塔是可行的,效益十分显著;但填料塔内件的配制有待完善,气液分布器是该塔改造的关键;由于大型填料塔存在着放大效应,物料在汽油分馏塔内聚合结垢是一普遍问题;需要往塔内注入阻聚剂以保证塔平稳运行在两年以上,而且,也要优化生产操作工况;热油循环系统可以降低塔顶温度回收热量,节能显著。
Technical transformation of gasoline fractionators in ethylene plants is reviewed and discussed in this paper A techno-economic analysis for the transformation is also presented. Replacing the large trays with packing is beneficial and feasible, but the inner structure of packing tower needs to be improved further, especially vapour and liquid distributors. Owing to the scale-up effect of large packing tower, polymerization and fouling occur generally in the tower. Addition of antifoulant and optimization of operation to ensure steady operation for more than two years are required. The pan oil loop can reduce top temperature and recover heat energy.
出处
《石油化工》
CAS
CSCD
北大核心
1993年第12期819-824,共6页
Petrochemical Technology
关键词
乙烯装置
汽油
分馏塔
ethylene plant, gasoline fractionator, packing, packing tower, vapour liquid distributors and technical transformation
