The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2014
Filed:
Dec. 08, 2009
Sukumar Mandal, Digvijaygram, IN;
Asit Kumar Das, Digvijaygram, IN;
Ashwani Yadav, Digvijaygram, IN;
Manoj Yadav, Digvijaygram, IN;
Akhilesh Bhatnagar, Digvijaygram, IN;
Rajeshwar Dongara, Vadodara, IN;
Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Vadodara, IN;
Sukumar Mandal, Digvijaygram, IN;
Asit Kumar Das, Digvijaygram, IN;
Ashwani Yadav, Digvijaygram, IN;
Manoj Yadav, Digvijaygram, IN;
Akhilesh Bhatnagar, Digvijaygram, IN;
Rajeshwar Dongara, Vadodara, IN;
Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Vadodara, IN;
Reliance Industries Limited, Mumbai, IN;
Abstract
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 Chydrocarbon stream and optionally steam and/or a fuel gas. Olefinic Chydrocarbon steam is cracked in the acceleration zone at 600 to 800° C., 0.8 to 5 kg/cm(gauge) pressure, WHSV 0.2 to 100 hr up 1 and vapour residence time 0.2 to 5 seconds.