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:
Sep. 18, 2007
Filed:
Aug. 07, 2006
James Francis Leahy, Tulsa, OK (US);
Robert L. Freerks, Jenks, OK (US);
James Francis Leahy, Tulsa, OK (US);
Robert L. Freerks, Jenks, OK (US);
Syntroleum Corporation, Houston, TX (US);
Abstract
A method and a system for drying a biomass, wet pulverized coal or combinations thereof, using heat from a Fischer-Tropsch synthesis in a heat exchanger to heat a nitrogen gas, using a flue gas in a heater to heat the heated nitrogen gas to a higher temperature, passing the twice heated nitrogen gas through apparatus to pulverize the fuel source of coal, biomass or both, forming a gas/particulate stream, filtering the gas/particulate stream in a filter to remove dried fuel feed stocks and using a blower to form a first steam and nitrogen mixture for discharge, and a second steam and nitrogen mixture for mixing with additional dry nitrogen gas for introduction to the first step of the method, at the heat exchanger.