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:
Feb. 17, 1981
Filed:
Feb. 26, 1979
Kurt-Gu_nther Beck, Essen-Bredeney, DE;
Georg Pollert, Essen, DE;
Wolfgang Rohde, Essen-Heisingen, DE;
Bergwerksverband GmbH, Essen, DE;
Abstract
Coking coal is preheated and dried by passing hot carrier gas into a generally vertical flash drying pipe, then passing comminuted coal into the same pipe, the carrier gas being blown with a flow speed to move the coal upwards in the pipe and passing at about the midpoint of the pipe a mixture of hot combustion gases and additional hot recycle gas branched off from the other hot waste gas line into the pipe so as to cause further heating and moving of the coal, the further heating being carried out in a uniform and gentle manner. At the end of the pipe the coal and carrier gas are separated and the coal is recovered while the waste gas are recycled into a blower and therefrom into the vertical flash drying pipe with a branch leading part of the recycle gas into a mixing chamber with the combustion gases so as to lower the temperature of the combustion gases when the same are passed into the pipe.