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:
Jan. 12, 1988
Filed:
Jul. 18, 1986
James R McConaghy, Jr, Ponca City, OK (US);
Charles J Swartz, Ponca City, OK (US);
Conoco Inc., Ponca City, OK (US);
Abstract
An internally-fired vertical shaft kiln for calcining coke wherein a downwardly moving coke bed has a co-current preheat gas stream in the upper portion of the kiln and a counter-current combustion gas stream in the lower portion of the kiln. Both gases are removed at the midportion of the kiln. Combustion air is introduced to the kiln through an inclined grate at the bottom of the kiln which retains a layer of coke thereon for internal combustion. The calcined coke moves over the combusting coke layer on the grate and then through a passage to a cooling chamber where a gas stream is passed through the calcined coke for cooling. The gas stream heated in the cooling chamber can be used as the co-current gas preheat stream in the upper section of the kiln.