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:
Jun. 28, 2016
Filed:
Apr. 27, 2012
Donald P. Malone, Grayson, KY (US);
Donald M. Lee, Huntington, WV (US);
Donald P. Malone, Grayson, KY (US);
Donald M. Lee, Huntington, WV (US);
ADVANCED CARBON PRODUCTS, LLC, Hitchins, KY (US);
Abstract
A process for producing mesophase pitch using a long tube reactor is disclosed. An aromatic rich feed, preferably a petroleum pitch having a softening point above 100° C., is preheated to a temperature above its softening point and mixed with a vapor, preferably steam, in a long tubular reactor under intense mixing conditions, preferably fully developed turbulent flow such as mist annular flow, with a residence time at least an order of magnitude less than prior art processes and preferably less than 10 seconds. Preferably the reactor is heated by electric resistance or induction heating or by immersion in a heated fluid or in a fired heater. Mesophase pitch with a high coking value and a surprisingly low quinolone insoluble content is produced. The byproducts of thermal polymerization and thermal dealkylation have less than 50% as much olefin and diene content as compared to similar byproducts from prior art processes.