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. 10, 1989
Filed:
Mar. 22, 1988
Krishna K Pillai, Finspong, SE;
ABB Stal AB, Finspong, SE;
Abstract
A steam-generating plant burning a fuel, primarily coal, in a fluidized bed has the bed vessel divided into a combustion chamber and an ash chamber by an air distributor with nozzles for the supply of air for fluidization of the bed and combustion of the fuel. The air distributor is provided with openings, through which bed material can pass from the fluidized combustion chamber to the non-fluidized ash chamber. Tubes for generating steam are provided in the combustion chamber and tubes for superheating steam are arranged in the ash chamber. The plant is provided with a transport means for conveying bed material back from the ash chamber to the combustion chamber. Regulating the quantity of bed material fed back to the combustion chamber also regulates the supply of heat to the superheating tubes and controls the degree of superheating obtained.