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:
Jun. 10, 2014
Filed:
Dec. 21, 2009
Leslie Andrew Chewter, Amsterdam, NL;
Hubertus Wilhelmus Albertus Dries, Amsterdam, NL;
Rene Samson, Amsterdam, NL;
Mao YE, Amsterdam, NL;
Leslie Andrew Chewter, Amsterdam, NL;
Hubertus Wilhelmus Albertus Dries, Amsterdam, NL;
Rene Samson, Amsterdam, NL;
Mao Ye, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A catalyst return apparatus is disclosed as well as a riser reactor system comprising the conduit apparatus and a riser reactor, the conduit apparatus comprising a catalyst return conduit and at least two flow control devices in series, each flow control device arranged to control the flow of fluid through the conduit, wherein the length of the catalyst return conduit is more than 20 m. A process for reacting a feedstock in a riser reactor system comprising a riser reactor, the catalyst return apparatus and, and a stage vessel, the process comprising: holding a fluid comprising the catalyst in the at least one stage vessel for a residence time of at least 10 seconds.