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. 12, 1976
Filed:
Aug. 20, 1975
Applicant:
Inventor:
Clarence A Johnson, Princeton, NJ (US);
Assignee:
Hydrocarbon Research, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; F26B / ;
U.S. Cl.
CPC ...
44 / ; 44 / ; 44-6 ; 34 10 ;
Abstract
Low rank coals such as subbituminous or lignites containing more than about 10 weight percent moisture are dried and passivated against reabsorption of moisture in a fluidized bed by heating the particulate coal with a warm inert gas passing upwardly through the bed and simultaneously coating the warm particulate coal with a heavy liquid hydrocarbon material. Such coating aids in the removal of the moisture and prevents the reabsorption of moisture by the coal and thereby prevents consequential heating and possibly spontaneous ignition of the coal during its subsequent transportation or storage.