EP 0226140 A3 19880210 - METHOD AND APPARATUS FOR THE COMBUSTION OF SOLID FUELS IN A CIRCULATING FLUIDIZED BED
Title (en)
METHOD AND APPARATUS FOR THE COMBUSTION OF SOLID FUELS IN A CIRCULATING FLUIDIZED BED
Publication
Application
Priority
DE 3544425 A 19851216
Abstract (en)
[origin: EP0226140A2] In a method for the combustion of solid fuels in a fluidised-bed reactor (1) with a circulating fluidised bed, the combustion gas discharge being influenced by the supply of air in a number of stages and at different heights of the fluidised-bed reactor, and ash removed from the fluidised-bed reactor being separated and conducted back into the fluidised-bed reactor, optimum combustion conditions over a wide load range, in particular for outputs below 50 MWth, are achieved simply in that separated ash is conducted back into the fluidised-bed reactor at a temperature in the range between 20 and 250 DEG C and at the same time the quantity of the ash flow conducted back is regulated depending on the combustion chamber temperature. This is preferably carried out by an uncooled combustion chamber (2), a flue gas cooler (6; 7), which is flowed through vertically, has cooling surfaces (8, 9, 10, 11) and diverts the flue gas at least once, and a filtering dust separator (14), which are arranged one behind another, and an ash return line (24) leading from the dust separator (14) to the reactor chamber (2). <IMAGE>
IPC 1-7
IPC 8 full level
F23C 10/10 (2006.01); F23C 10/32 (2006.01)
CPC (source: EP)
F23C 10/10 (2013.01); F23C 10/32 (2013.01); F23C 2206/102 (2013.01); F23J 2219/10 (2013.01)
Citation (search report)
- [YD] DE 2539546 A1 19770317 - METALLGESELLSCHAFT AG
- [Y] EP 0158033 A2 19851016 - STUDSVIK ENERGITEKNIK AB [SE]
- [A] EP 0112237 A1 19840627 - CREUSOT LOIRE [FR]
- [A] EP 0093063 A1 19831102 - CREUSOT LOIRE [FR]
- [Y] EP 0001358 A1 19790404 - EXXON RESEARCH ENGINEERING CO [US]
- [A] EP 0161970 A1 19851121 - FRAMATOME & CIE [FR]
- [A] US 4419965 A 19831213 - GARCIA-MALLOL JUAN A [US], et al
- [A] DE 3407689 A1 19850912 - STEAG AG [DE]
- [A] PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 269 (M-259)[1414], 30. November 1983; & JP-A-58 148 305 (KAWASAKI JUKOGYO K.K.) 03-09-1983
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0226140 A2 19870624; EP 0226140 A3 19880210; DE 3544425 A1 19870625; DK 606486 A 19870617; DK 606486 D0 19861216
DOCDB simple family (application)
EP 86116899 A 19861204; DE 3544425 A 19851216; DK 606486 A 19861216