Fischer-Tropsch wax catalytic cracking for the production of low olefin and high octane number gasoline: Process optimization and heat effect calculation  

作　　者：Mei Yang Gang Wang Jian-Nian Han Cheng-Di Gao Jin-Sen Gao 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering and and Environment,China University of Petroleum,Beijing 102249,China [2]College of Science,China University of Petroleum,Beijing 102249,China

出　　处：《Petroleum Science》2023年第2期1255-1265,共11页石油科学（英文版）

基　　金：supported by the National Key Research and Development Program of China(2017YFB0602504);the General Program of National Natural Science Foundation of China(22178385).

摘　　要：To produce low olefin gasoline with high octane number by Fischer-Tropsch (F-T) wax fluid catalytic cracking (FCC) process, operating conditions optimization were carried out in the pilot-scale riser and turbulent fluidized bed (TFB) FCC unit. The experimental results in the riser indicated that under the condition of low reaction temperature and regenerated catalyst temperature, large catalyst-to-oil weight ratio (C/O) and long reaction time, the gasoline olefin content could be reduced to 20.28 wt%, but there is large octane number loss owing to a great loss in high octane number olefin. Therefore, a novel FCC process using the TFB reactor was proposed to strengthen the aromatization reaction. The reaction performance of TFB reactor were investigated. The result demonstrated that the TFB reactor has more significant effect in reducing olefins and improving aromatics. At the expense of certain gasoline yield, the gasoline olefin content reduced to 23.70 wt%, aromatics content could increase to 26.79 wt% and the RON was up to 91.0. The comparison of reactor structure and fluidization demonstrated that the TFB reactor has higher catalyst bed density. The reaction heat and coke combustion heat was calculated indicating the feasibility of its industrial application of the TFB process.

关 键 词：Fischer-Tropsch wax Catalytic cracking RISER TFB Gasoline olefin Reaction heat 

分 类 号：TE348[石油与天然气工程—油气田开发工程]