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:
Dec. 18, 2007
Filed:
Sep. 23, 2004
Applicants:
James H. Beech, Jr., Kingwood, TX (US);
James R. Lattner, Seabrook, TX (US);
Nicolas P. Coute, Houston, TX (US);
Jeff S. Smith, Baytown, TX (US);
Inventors:
James H. Beech, Jr., Kingwood, TX (US);
James R. Lattner, Seabrook, TX (US);
Nicolas P. Coute, Houston, TX (US);
Jeff S. Smith, Baytown, TX (US);
Assignee:
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 50/00 (2006.01); B01D 53/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Catalyst losses are prevented in riser reactor systems by using a low inlet velocity for the first cyclone separator in each multi-stage cyclone separator in the reactor. Catalyst particles not separated from the product output flow in an oxygenate-to-olefin reactor are also recaptured by cooling the product output flow and passing the flow through an electrostatic precipitator.