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:
Nov. 17, 1992
Filed:
Aug. 27, 1991
Amirali G Rehmat, Westmont, IL (US);
Mark J Khinkis, Morton Grove, IL (US);
Institute of Gas Technology, Chicago, IL (US);
Abstract
A process for combustion of hydrocarbonaceous materials containing high levels of sulfur, fuel-bound nitrogen and low levels of ash which inhibits the emissions of oxides of nitrogen and sulfur, reduces solid waste disposal, and produces useable by-products. In the first step of the process, the hydrocarbonaceous material is burned in a fluidized bed into which a calcium based sorbent is introduced, producing a mixture of gaseous products of combustion and particulate matter, ash and calcium containing solids. In a second step of the process, the mixture of gaseous products of combustion and particulate matter is completely burned in a cyclonic combustion reactor. In a third step of the process, the ash and calcium-containing solids generated in the fluidized bed are withdrawn from the fluidized bed, cooled and contacted with steam in a regenerator producing calcium hydroxide, ash and unspent sorbent which are recycled to the fluidized bed.