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:
Nov. 24, 2015
Filed:
May. 21, 2015
Uop Llc, Des Plaines, IL (US);
Stanley J. Frey, Palatine, IL (US);
Paul T. Barger, Arlington Heights, IL (US);
Maureen L. Bricker, Buffalo Grove, IL (US);
John Q. Chen, Glenview, IL (US);
Peter K. Coughlin, Mundelein, IL (US);
James A. Johnson, Burr Ridge, IL (US);
Joseph A. Kocal, Glenview, IL (US);
Matthew Lippmann, Chicago, IL (US);
Vasant P. Thakkar, Elk Grove Village, IL (US);
Kurt M. Vanden Bussche, Lake in the Hills, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
A process for selectively dealkylating aromatic compounds includes providing a coal tar stream comprising aromatic compounds and hydrotreating the coal tar stream to reduce a concentration of one or more of organic sulfur, nitrogen, and oxygen in the coal tar stream, and to hydrogenate at least a portion of the aromatic compounds in the coal tar stream. The process further includes hydrocracking the hydrotreated coal tar stream to further hydrogenate the aromatic compounds and to crack at least one ring of multi-ring aromatic compounds to form single-ring aromatic compounds. The single-ring aromatic compounds present in the hydrocracked stream are then dealkylated to remove alkyl groups containing two or more carbon atoms.