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:
Feb. 28, 2006
Filed:
May. 11, 2001
Pauli Dernjatin, Helsinki, FI;
Kati Savolainen, Vantaa, FI;
Kari Jääskeläinen, Vantaa, FI;
Marko Fabritius, Helsinki, FI;
Pauli Dernjatin, Helsinki, FI;
Kati Savolainen, Vantaa, FI;
Kari Jääskeläinen, Vantaa, FI;
Marko Fabritius, Helsinki, FI;
Kvaerner Power Oy, Tamperem, FI;
Abstract
The invention relates to a combined fluidized bed and pulverized coal combustion method and system. In the method, fluidizing air () is injected into a fluidized bed () situated in the bottom portion of the combustion chamber (). Into the combustion chamber, to above the fluidized bed (), is fed a mixture of pulverized coal and a carrier gas from a second set of fuel feed means () at a mass flow rate which is higher or at least substantially equal to the upper ignition limit of the mixture, and the mixture of the pulverized coal and the carrier gas at least by the fluidizing air (), and at least a fraction of the fuel fed via the second set of fuel feed means () is combusted above the fluidized bed ().