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:
Mar. 04, 1997
Filed:
Jun. 21, 1994
Applicant:
Inventors:
Assignee:
Alberta Oil Sands Technology and Research Authority, Edmonton, CA;
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208391 ; 208390 ;
Abstract
Oil sand is treated to prevent the production of sulfur dioxide ('SO.sub.2 ') from a known rotating kiln-type processor. Lime or calcium oxide ('CaO') is added with the oil sand feed to the kiln. In the kiln, the CaO is mixed with the sulfur-containing bitumen of the oil sand and preheated. The preheated mixture is then pyrolysed, forming coke which is modified by the added CaO to reduce its tendency to produce SO.sub.2 when combusted. The modified coke is then combusted with air, producing substantially no SO.sub.2.