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. 04, 2007
Filed:
Nov. 24, 2003
Keith H. Kuechler, Friendswood, TX (US);
Jeffrey L. Brinen, League City, TX (US);
James Richardson Lattner, Seabrook, TX (US);
Allen Scott Gawlik, Houston, TX (US);
Keith H. Kuechler, Friendswood, TX (US);
Jeffrey L. Brinen, League City, TX (US);
James Richardson Lattner, Seabrook, TX (US);
Allen Scott Gawlik, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A process and apparatus are provided for converting oxygenate to olefins which comprises: contacting a feedstock comprising oxygenate with a catalyst comprising a molecular sieve under conditions effective to produce a vaporous product comprising the olefins, water and unreacted oxygenate; condensing the vaporous product to provide a liquid stream rich in the water and unreacted oxygenate, and an olefins-rich vapor stream; introducing at least part of the liquid stream to a feed tray in a fractionation tower which provides an oxygenate-rich overhead product and a water-rich liquid bottoms product; providing a liquid, oxygenate-rich stream comprising at least about 20 wt % oxygenate above the feed tray; and passing the olefins-rich vapor stream through a recovery train to recover at least some of the olefins.