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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.:

US 7008459 B1

PDFFull Text
Date of Patent:
Mar. 07, 2006

Filed:

Apr. 09, 1997

Pretreatment process to remove oxygen from coal en route to a coal pyolysis process as a means of improving the quality of the hydrocarbon liquid product

Applicants:

Arthur P. Fraas, Knoxville, TN (US);

Richard L. Furgerson, Knoxville, TN (US);

Harold L. Falkenberry, Chattanooga, TN (US);

Inventors:

Arthur P. Fraas, Knoxville, TN (US);

Richard L. Furgerson, Knoxville, TN (US);

Harold L. Falkenberry, Chattanooga, TN (US);

Assignee:

Other;

Attorneys:

James Creighton Wray

Meera P. Narasimhan

Primary Examiner:

Alexa Doroshenk

Int. Cl.
CPC ...
C10B 1/00 (2006.01); C10B 7/10 (2006.01); C10B 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process and apparatus for coal pyrolysis pretreatment. The apparatus is made up of a pretreatment vessel for holding a bed of coal particles, a preheater for heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and an oxygen remover for removing oxygen released from the heated coal particles. The apparatus can also have a flue gas source as an oxygen removal sweep gas to the bed of coal, a collector for collecting non-condensable combustible gases, and the preheater having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles. The process involves heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and preventing air from contacting the bed of coal particles in addition to collecting non-condensable combustible gases or the preheating step accomplished by having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles.

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Fraas, Arthur. (2006). Pretreatment process to remove oxygen from coal en route to a coal pyolysis process as a means of improving the quality of the hydrocarbon liquid product (U.S. Patent No. 7008459). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7008459

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