EP 0142437 B1 19890726 - METHOD AND DEVICE FOR REINJECTING FLYASH PARTICLES INTO A BOILER FOR SOLID FUEL
Title (en)
METHOD AND DEVICE FOR REINJECTING FLYASH PARTICLES INTO A BOILER FOR SOLID FUEL
Publication
Application
Priority
- FR 8317811 A 19831109
- FR 8401774 A 19840206
Abstract (en)
[origin: WO8502246A1] In a boiler supplied with fuel by a projector (17) and comprising a so called "back" grid (3), the flue gas are picked up and traverse successively means (36) for the separation of the coarse flown-off particles and means (43) for the separation of fine particles, before being evacuated; the coarse particles are reinjected into the boiler in a known manner; furthermore, the irregular flow rate of particles of the second separation means (43) is transformed into a continuous flow rate, at least approximately proportional to the boiler load, and said continuous flow rate is introduced in a continuous transport air flow rate with which it is injected into a portion of the path (20) of the fuel from the projector (17) which is close to the grid (3); thereby, it is possible to reinject and burn into the boiler all particles flown off with the flue gas without pertubating the operation of the boiler.
IPC 1-7
IPC 8 full level
F23B 99/00 (2006.01); B01D 53/83 (2006.01); B01D 53/96 (2006.01); F22B 35/00 (2006.01); F23B 70/00 (2006.01); F23G 5/00 (2006.01); F23J 3/06 (2006.01); F23J 15/00 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0142437 A2 19850522; EP 0142437 A3 19850918; EP 0142437 B1 19890726; AU 3613784 A 19850603; AU 577563 B2 19880929; CA 1252356 A 19890411; DE 3479148 D1 19890831; JP H0739842 B2 19950501; JP S61500377 A 19860306; US 4648329 A 19870310; US 4739715 A 19880426; WO 8502246 A1 19850523
DOCDB simple family (application)
EP 84402258 A 19841109; AU 3613784 A 19841109; CA 467364 A 19841108; DE 3479148 T 19841109; FR 8400256 W 19841109; JP 50420484 A 19841109; US 75230985 A 19850703; US 92488686 A 19861030