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Process of catalytic cracking of hydrocarbon 发明申请

2023-07-17 1810 385K 0

专利信息

申请日期 2025-07-29 申请号 US10542787
公开(公告)号 US20060144759A1 公开(公告)日 2006-07-06
公开国别 US 申请人省市代码 全国
申请人 Kenichi Wakui
简介 The present invention provides a process for the catalytic cracking of a hydrocarbon, characterized in that the catalytic cracking is carried out in the presence of a crystalline aluminosilicate zeolite catalyst carrying a rare earth element in an amount ranging from 0.4 to 20 in terms of atomic ratio relative to the aluminum of the zeolite using a reactor which permits continuous regeneration of the catalyst and which is of a fluidized bed type, a moving bed type, or a transfer line reaction type under reaction conditions involving a reaction temperature ranging from 500 to 700° C., a reaction pressure ranging from 50 to 500 kPa, a steam to hydrocarbon mass ratio ranging from 0.01 to 2, and a contacting time ranging from 0.1 to 10 seconds. With this process, the generation of by-products such as aromatic hydrocarbons and heavy hydrocarbons can be inhibited and light olefins such as ethylene and propylene can be selectively produced in a stable manner for a long period of time.


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