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EP0092585A1 - Dispositif automatique de combustion de bois - Google Patents

Dispositif automatique de combustion de bois

Info

Publication number
EP0092585A1
EP0092585A1 EP83900102A EP83900102A EP0092585A1 EP 0092585 A1 EP0092585 A1 EP 0092585A1 EP 83900102 A EP83900102 A EP 83900102A EP 83900102 A EP83900102 A EP 83900102A EP 0092585 A1 EP0092585 A1 EP 0092585A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
combustion
housing
chamber
tunnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83900102A
Other languages
German (de)
English (en)
Inventor
Werner Martin
Daniel R. Koenigshofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEAT HARVESTER Corp
Original Assignee
HEAT HARVESTER Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HEAT HARVESTER Corp filed Critical HEAT HARVESTER Corp
Publication of EP0092585A1 publication Critical patent/EP0092585A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING 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
    • F23L15/00—Heating of air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/30—Combustion apparatus using only lump fuel characterised by the form of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B3/00—Combustion apparatus which is portable or removable with respect to the boiler or other apparatus which is heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • a tunnel fuel burner 10 mounted on a vertical furnace housing 11 that is supported on the furnace base 12 on which furnace the stack 13 is mounted for discharging the flue and any fly ash and other emissions.
  • a fuel hopper 14 mounted on the base 15 contains wood pellets 16 which are fed through the fuel supply tube 17 that is connected to an opening (not shown) in the side wall 18 of the hopper 14 through which the wood chips 16 may pass by means of a revolving auger (not shown) that is rotated by means of the motor 19 which drives the auger-mounted pulley 20 through the drive belt 21.
  • a rheostat 22 is provided to control ash and other emis- sions.
  • a fuel hopper 14 mounted on the base 15 contains wood pellets/ chips 16 which are fed through the fuel supply tube 17 that is connected to an opening (not shown) in the side wall 18 of the hopper 14 through which the wood pellets/chips 16 may pass by means of a revolving auger 47, shown in Figure 3, that is rotated by means of the motor 19 which drives the auger-mounted pulley 20 through the drive chain 21.
  • a rheostat 22 is provided to control the speed of the motor 19.
  • Upper and lower forced air centrifugal fans 23-and 24 are securely mounted to the projecting air inlet ducts 25 and 25' on the outer cylin ⁇ drical horizontal housing 26 of the tunnel burner 10.
  • the forward or discharge end 27 of the burner 10 has a c'ircular flange 28 that seals the forward end of the annular chamber 46 and is secured to the plate 29 that is mounted on the projecting rectangular furnace door flange 30.
  • An ash removal duct 31 extends downwardly from the tunnel burner 10 to receive the ashes from within the combustion chamber and to be dis ⁇ charged through the diverging lower.portion 32 into an ash collecting chamber (not shown).
  • a start-up access port 33 extends vertically through the tunnel burner to provide access to the combustion chamber for igniting the wood chips to be burned with the upper end being provided with a cover plate (not shown) during operation.
  • the tunnel burner is illustrated with the flange 28 mounted on the outer horizontal cylindrical housing 34 with the inner horizontal cylindrical combustion chamber 35 projecting therefrom to the right.
  • the downwardly extending ash removal sleeve 36 extends through an
  • the upper air inlet duct 25 is secured to the outer housing 34 while the start-up port or nipple 33 extends through the circular opening 38 in the outer housing 34 for attachment to the inner horizontal cylindrical combustion chamber housing 35.
  • a rear flange 39 is secured to the outer and inner housings 34 and 35, and with the flange 28 being secured to the outer and inner housings, and an annular longitudinal chamber 46 is provided between the inner and outer housings 34. and 35 as shown in Figures 3 and 4.
  • the tunnel burner 10 is secured to the plate 29 on the furnace by means of the bolts 40 that pass through the openings 41 provided in flange 28. Removal of the bolts 40 from threaded engagement with the plate 29 will facilitate removal of the tunnel burner from connection to the furnace.
  • a fuel inlet tube or passage 42 is securely supported by the fuel nozzle supporting plate 43 which plate 43 is securely fastened by suitable bolts (not shown) to the rear plate 39 permitting the fuel discharge nozzle 44 to be positioned eccentrically in the combustion chamber 45 within the inner housing 35 as more clearly shown in Figure 3.
  • Figure 3 illustrates, in transverse sectional view, the assembled tunnel burner with any external insulation 54 and but with the fuel injection nozzle 44 in position and eccentrically mounted within the combustion chamber 45 of the inner combustion housing 35. Plates 39 and 43 are fastened together.
  • the air supply ducts 25 and 25' extend diametri ⁇ cally opposite each other in close proximity to the discharge nozzle 44 of the fuel inlet line 42 with air being forced into the annular longi ⁇ tudinal chamber 46 in which incoming air for combustion will be preheated and circulated rotatably and longitudinally through chamber 46 before entry into combustion chamber 45 through a plurality of longitudinally and circumferentially-spaced openings 48 as illustrated in Figure 4.
  • the annular chamber 46 is closed at opposite ends by flange 28 and plate 39.
  • the start-up port 33 is shown connected to the inner combustion housing 35 and projects through the outer housing 34.
  • the ash removal sleeve 36 is connected also to the inner combustion housing 35 to remove any ash deposited within the combustion chamber 45.
  • a longitudinally- extending auger 47 extends through the fuel supply tube 17 into the fuel supply inlet line 42 to deliver wood pellets/chips into the combustion chamber 45 upon discharge from the nozzle 44.
  • the fuel injection nozzle 50 illustrated in Figure 5, shown as 44 in Figures 2 and 3, is mounted on the plate 51 in which the outlet end 52 is chamfered or machined at an angle, similar to the end of nozzle 44 in Figures 2 and 3, and is provided with a series of longitudinally and circu ferentially-spaced openings or ports 53 through which air entering the combustion chamber 45 from the openings 48 leading to the annular chamber 46 may be introduced and gas exchange can take place in order to drive off moisture and volatile matter out of the fuel and to preheat the products of combustion entering through the nozzle 50 before being dispensed into the combustion chamber.
  • the heated air from the annular chamber 46 will be directed downwardly through openings 48 into the openings 53 in nozzle 50.
  • the tunnel burner of this invention may be readily disassembled and reassembled with a minimum number of parts that are maintenance free. It will be readily apparent to those skilled in the art that the amount of combustion air may be regulated by the fan speeds, adjusting the openings 25 and 25', modifying the air inlet openings on the fans 23 and 24 and providing the desired number of openings in the combustion chamber or adjusting them by size and quantity depending upon design requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

Brûleur de combustible à tunnel (10) dans lequel des briquettes/copeaux de bois (16) peuvent être brûlés et dans lequel des enceintes longitudinales cylindriques concentriques extérieure (34) et intérieure (35) forment une chambre (46) annulaire longitudinale de préchauffage d'air permettant de fournir l'air de combustion à une chambre de combustion (45) formée par l'enceinte cylindrique concentrique intérieure (35) et dans lequel le combustible sous forme de briquettes/copeaux de bois (16) est fourni à une extrémité de la chambre de combustion (45) au travers d'une buse d'alimentation d'entrée (42), les briquettes/copeaux de bois étant préchauffés par l'air préchauffé à l'arrivée et par les produits de combustion de manière à éloigner l'humidité et les substances volatiles avant la combustion du combustible.
EP83900102A 1981-10-30 1982-11-01 Dispositif automatique de combustion de bois Withdrawn EP0092585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31685681A 1981-10-30 1981-10-30
US316856 1981-10-30

Publications (1)

Publication Number Publication Date
EP0092585A1 true EP0092585A1 (fr) 1983-11-02

Family

ID=23230998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83900102A Withdrawn EP0092585A1 (fr) 1981-10-30 1982-11-01 Dispositif automatique de combustion de bois

Country Status (2)

Country Link
EP (1) EP0092585A1 (fr)
WO (1) WO1983001672A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128162A1 (fr) * 1982-12-08 1984-12-19 MASKINFABRIKKEN DAN-TRIM ApS Chargeur automatique de combustible solide
FR2571474B1 (fr) * 1984-10-04 1989-06-23 Dupuis Jacques Bruleur a combustible solide pour chaudiere
US5001993A (en) * 1990-01-03 1991-03-26 Gramlow David E Stove for burning bio-mass pellets and grain
AT500602A3 (de) * 2004-07-30 2006-09-15 Walter Hager Kompaktbrenner für festbrennstoffe
KR100704871B1 (ko) * 2005-10-31 2007-04-09 한국전력공사 미량의 미분탄 정량 공급장치
US20210113016A1 (en) * 2019-10-22 2021-04-22 Dansons Us, Llc Removable Auger Assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132980A (en) * 1934-01-16 1938-10-11 Thomas R Woolley Stoker construction
US3031144A (en) * 1957-12-23 1962-04-24 Nippon Shinnetsu Kogyo Kabushi Method of utilizing combustion heat of the coal of low quality
US3777678A (en) * 1971-06-14 1973-12-11 Mac Millan Bloedel Ltd Cyclonic type fuel burner
US3837303A (en) * 1973-11-09 1974-09-24 Mill Conversion Contractors In Wood and gas fuel burner
US4351251A (en) * 1981-06-29 1982-09-28 Mechtron International Corp. Combustion apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8301672A1 *

Also Published As

Publication number Publication date
WO1983001672A1 (fr) 1983-05-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840105

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARTIN, WERNER

Inventor name: KOENIGSHOFER, DANIEL R.