发明授权
US08685232B2 Fluid catalytic cracking (FCC) process for manufacturing propylene and ethylene in increased yield
有权
用于制备丙烯和乙烯的流化催化裂化（FCC）方法，其产率增加
- 专利标题： Fluid catalytic cracking (FCC) process for manufacturing propylene and ethylene in increased yield
- 专利标题（中）： 用于制备丙烯和乙烯的流化催化裂化（FCC）方法，其产率增加
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申请号： US13133759申请日： 2009-12-08
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公开(公告)号： US08685232B2公开(公告)日： 2014-04-01
- 发明人: Sukumar Mandal , Asit Kumar Das , Ashwani Yadav , Manoj Yadav , Akhilesh Bhatnagar , Rajeshwar Dongara , Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli
- 申请人： Sukumar Mandal , Asit Kumar Das , Ashwani Yadav , Manoj Yadav , Akhilesh Bhatnagar , Rajeshwar Dongara , Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli
- 申请人地址： IN Mumbai
- 专利权人： Reliance Industries Limited
- 当前专利权人： Reliance Industries Limited
- 当前专利权人地址： IN Mumbai
- 代理机构： Klein, O'Neill & Singh, LLP
- 优先权： IN2569/MUM/2008 20081210
- 国际申请： PCT/IN2009/000708 WO 20091208
- 国际公布： WO2010/067379 WO 20100617
- 主分类号： C10G11/18
- IPC分类号： C10G11/18 ; C10G11/00 ; C07C4/06 ; C07C4/02
摘要：
Manufacture of propylene and ethylene in a FCC unit. Each FCC riser comprises an acceleration zone, a lift stream feed nozzle, a main hydrocarbon stock feed nozzle, and an olefinic naphtha feed nozzle. Mixed FCC catalyst comprising at least 2 percent by weight pentasil zeolite and at least 10 percent by weight Y-zeolite is injected at the bottom of each FCC riser. Olefinic naptha is injected through the olefinic feed nozzle, main hydrocarbon stock is injected through the main hydrocarbon stock feed nozzle and lift stream is injected through the lift stream feed nozzle. Lift stream comprises olefinic C4 hydrocarbon stream and optionally steam and/or a fuel gas. Olefinic C4 hydrocarbon steam is cracked in the acceleration zone at 600 to 800° C., 0.8 to 5 kg/cm2 (gauge) pressure, WHSV 0.2 to 100 hr up 1 and vapour residence time 0.2 to 5 seconds.
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