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:
Oct. 20, 2015
Filed:
Aug. 28, 2014
Uop Llc, Des Plaines, IL (US);
Deng-Yang Jan, Elk Grove Village, IL (US);
Robert L. Bedard, McHenry, IL (US);
John Q. Chen, Glenview, IL (US);
Peter K. Coughlin, Mundelein, IL (US);
Jayant K. Gorawara, Buffalo Grove, IL (US);
James A. Johnson, Burr Ridge, IL (US);
Gregory F. Maher, Aurora, IL (US);
Dean E. Rende, Arlington Heights, IL (US);
Vasant P. Thakkar, Elk Grove Village, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
A process for purifying at least one product from coal tar is described. The process involves separating a coal tar fraction having a boiling point in the range of about 180° C. to about 230° C. into an acidic portion and a non-acidic portion by contacting the fraction with a caustic compound. The acidic portion is separated into a cresol portion and a xylenol portion, and the non-acidic portion is separated into a naphthalene portion and a naphthalene co-boiler portion. The acidic portion and the non-acidic portions are separated by contacting with an adsorbent comprising small, discrete crystallites, the adsorbent having less than 10 wt % amorphous binder component. The various portions can be separated in a similar manner.