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1. WO1992016791 - A SOLID FUEL STOKER

Publication Number WO/1992/016791
Publication Date 01.10.1992
International Application No. PCT/DK1992/000082
International Filing Date 16.03.1992
Chapter 2 Demand Filed 14.10.1992
IPC
F23L 1/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
1Passages or apertures for delivering primary air for combustion
F23L 9/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
9Passages or apertures for delivering secondary air for completing combustion of fuel
F23M 5/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
5Casings; Linings; Walls
08Cooling thereof; Tube walls
CPC
F23B 1/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
1Combustion apparatus using only lump fuel
16the combustion apparatus being modified according to the form of grate or other fuel support
26using imperforate fuel supports
F23B 1/30
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
1Combustion apparatus using only lump fuel
30characterised by the form of combustion chamber
F23L 1/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL 
1Passages or apertures for delivering primary air for combustion 
F23L 9/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL 
9Passages or apertures for delivering secondary air for completing combustion of fuel 
F23M 5/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
5Casings; Linings; Walls
08Cooling thereof; Tube walls
Applicants
  • PEDERSEN, Uffe [DK]/[DK]
Inventors
  • PEDERSEN, Uffe
Agents
  • GREGERSEN, N., H.
Priority Data
0460/9115.03.1991DK
Publication Language English (EN)
Filing Language Danish (DA)
Designated States
Title
(EN) A SOLID FUEL STOKER
(FR) CHARGEUR DE COMBUSTIBLE SOLIDE
Abstract
(EN)
A solid fuel stoker comprising a tunnel shaped combustion chamber or hearth (4) of which the lower part consists of a water cooled, double walled steel construction with a plane bottom part (14) and upwards/outwards inclined sidewalls (16), and of which an upper curved part (18) consists of ceramic elements, by said stoker fuel is supplied by means of a worm conveyor (8) through a stoker opening and carried forward in the hearth (4) by a reciprocating scraper conveyor (26) arranged along said bottom part (14), said sidewalls between mutual parallel water filled cooling pipes (20) are provided with inlet openings (22) for combustion air, the scraper conveyor (26) is provided with transverse mainly triangular, hollow scraper elements (30) being connected with a central beam (28) which in the longitudinal direction is made from sections in such a way that the cooling water may be supplied to the scraper elements (30) via one pipe section (40) and may be discharged from the scraper elements via another pipe section (38), and that the scraper conveyor (26) moreover comprises inlet openings (48) through which primary combustion air may be admitted along the bottom part (14) of the hearth (4).
(FR)
Chargeur de combustible solide comprenant une chambre de combustion ou foyer (4) en forme de tunnel, dont la partie inférieure est constituée par une structure en acier à double paroi et à refroidissement par eau, comportant une partie inférieure plate (14) et des parois latérales inclinées vers le haut et vers l'extérieur et dont une partie supérieure incurvée (18) est constituée par des éléments en céramique. Le combustible est introduit au moyen d'une vis transporteuse (8) par une ouverture et véhiculé à l'intérieur du foyer (4) par un entraîneur à raclettes à déplacement alternatif (26) disposé le long de ladite partie inférieure (14). Lesdites parois latérales situées entre les tuyaux de refroidissement réciproquement parallèles et remplis d'eau (20), comportent des ouvertures d'entrée (22) de l'air de combustion; l'entraîneur à raclettes (26) comporte des éléments de raclage transversaux et principalement triangulaires (30) reliés à une traverse centrale (28) constituée dans le sens de la longueur par des sections, de façon à transporter l'eau de refroidissement vers les éléments de raclage (30) par l'intermédiaire d'une section de tuyau (40) et à l'évacuer desdits éléments par l'intermédiaire d'une autre section de tuyau (38). L'entraîneur à raclettes (26) comporte, de plus, des ouvertures d'entrée (48) servant à l'admission de l'air de combustion primaire le long de la partie inférieure (14) du foyer (4).
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