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:
May. 16, 1989
Filed:
Jul. 14, 1988
Michael G Alliston, Denville, NJ (US);
Kenneth A Reed, Califon, NJ (US);
Foster Wheeler Energy Corporation, Clinton, NJ (US);
Abstract
A method of controlling the particle size distribution in a fluidized bed reactor in which a primary bed of particulate material having a varying size and including fuel is established. Air is introduced into the bed to fluidize the material and promote the combustion of the fuel. A portion of the particulate material is discharged from the bed and into a secondary bed. Air is introduced to the secondary bed at a velocity sufficient to fluidize the particulate material and entrain some of the finer portions of the particulate material. The air and the entrained finer material from the secondary bed are passed back to the primary bed and the velocity of the air introduced to the secondary bed is varied to vary the amount of the finer material that is entrained and thus control the size of the material in the primary bed.