发明名称 |
A FLUID CATALYTIC CRACKING (FCC) PROCESS FOR MANUFACTURING PROPYLENE AND ETHYLENE IN INCREASED YIELD |
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. |
申请公布号 |
EP2364343(A2) |
申请公布日期 |
2011.09.14 |
申请号 |
EP20090831572 |
申请日期 |
2009.12.08 |
申请人 |
RELIANCE INDUSTRIES LIMITED |
发明人 |
MANDAL, SUKUMAR;DAS, ASIT, KUMAR;YADAV, ASHWANI;YADAV, MANOJ;BHATNAGAR, AKHILESH;DONGARA, RAJESHWAR;KATRAVULAPALLI, VEERA VENKATA SATYA BHASKARA SITA |
分类号 |
C10G11/05;C10G11/18 |
主分类号 |
C10G11/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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