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. 25, 2006
Filed:
Apr. 15, 2004
Richard Wai-chun Liu, Seabrook, TX (US);
Philip Dean Hill, Baton Rouge, LA (US);
Thomas Edwin Pruitt, Deer Park, TX (US);
Forrest Lee Sanders, Katy, TX (US);
Albert Yi Yang, Houston, TX (US);
Richard Wai-Chun Liu, Seabrook, TX (US);
Philip Dean Hill, Baton Rouge, LA (US);
Thomas Edwin Pruitt, Deer Park, TX (US);
Forrest Lee Sanders, Katy, TX (US);
Albert Yi Yang, Houston, TX (US);
Rhodia Inc., Cranbury, NJ (US);
Abstract
A method for purifying a spent acid catalyst from an acid catalyzed chemical reaction that generates a mixture of a product, spent add and tar, includes the steps of separating the mixture of product, spent acid, and tar into a product fraction and a spent acid fraction, said spent acid fraction comprising a mixture of spent acid and tar, and separating the spent acid fraction, by flotation separation, centrifugation, or liquid-liquid coalescence, into a tar fraction and a de-tarred spent acid fraction. The fluidized tar and the de-tarred spent acid can each be further processed to produce concentrated acid.