WO2014083504A2 - Dispositif de post-combustion - Google Patents

Dispositif de post-combustion Download PDF

Info

Publication number
WO2014083504A2
WO2014083504A2 PCT/IB2013/060425 IB2013060425W WO2014083504A2 WO 2014083504 A2 WO2014083504 A2 WO 2014083504A2 IB 2013060425 W IB2013060425 W IB 2013060425W WO 2014083504 A2 WO2014083504 A2 WO 2014083504A2
Authority
WO
WIPO (PCT)
Prior art keywords
post combustor
combustor
post
combustion
gases
Prior art date
Application number
PCT/IB2013/060425
Other languages
English (en)
Other versions
WO2014083504A3 (fr
Inventor
Cesar ROSAS ZUMELZU
Valeri BUBNOVICH
Roberto SANTANDER MOYA
Nelson MORAGA BENAVIDES
Original Assignee
Universidad De Santiago De Chile
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 Universidad De Santiago De Chile filed Critical Universidad De Santiago De Chile
Publication of WO2014083504A2 publication Critical patent/WO2014083504A2/fr
Publication of WO2014083504A3 publication Critical patent/WO2014083504A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
    • F23B10/02—Combustion apparatus characterised by the combination of two or more combustion chambers including separate secondary combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B90/00—Combustion methods not related to a particular type of apparatus
    • F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/026—Closed stoves with several combustion zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/189—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers 
    • F24B1/1895—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers  flue-gas control dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/105—Granular bed

Definitions

  • This post combustor is installed in the first portion of the outlet duct or else, directly on the combustion chamber in such a way that the particles are heated and the gas passing through the interstices generated by said particles, ends up being burned.
  • the environmental pollution is one of the main concerns at a global level.
  • the firewood is used as fuel for home heating.
  • firewood is the cheapest one.
  • document CA 1 198641 discloses a stove with a catalytic wood combustor having a combustor ignitor plate which produces turbulence and a mixture of combustion gases and air from a primary air supply to feed a completely mixed gas to the catalytic combustor of the firebox at a low temperature within a range of 204 °C (400 °F) to 260 °C (500 °F), but operate the combustor at a high temperature above 538 °C (1000°F) to 649 ⁇ 0 (1200°F) or higher.
  • Document EP 0483878 discloses a combustion device for wood and coal, consisting of a front wall with fuel charging opening, two side walls, a rear wall, a bottom wall, a top wall, a door for the fuel charging opening, a control element for controlling a fresh-air inlet opening, an inner partition which divides the inner device into a precombustion chamber and a combustion chamber having a passage opening between the two chambers, and a grating on the upper portion of the post combustion chamber and a smoke gas take-off.
  • the partition is horizontally arranged and inserted towards its passage opening in a sealed manner wherein there is a shaft pipe surrounded by an annular space which is connected to the air-fresh inlet opening.
  • the grating lies on the shaft pipe.
  • the device disclosed in this document has a contractive simple design and at the same time optimal combustion conditions.
  • the partition consists essentially of a grating and a circumferential duct pipe with an inner annular space.
  • tubes can be used, which are connected to the annular space and have slots which are laterally directed, possibly towards the neighboring pipes.
  • Means are provided for preheating both the secondary air and the catalytic converter.
  • a catalytic converter is disposed over the fire area in the upper portion of the stove, and is arranged to receive preheated fresh secondary air which mixes with hot, incompletely combusted compounds from the fire and, in the presence of the catalyst, induces a secondary combustion of the substances. This mixture is channeled into a heat extraction chamber where the secondary combustion is completed and the resultant heat is transferred to the metal body of the stove. An exhaust passageway is provided for releasing the products of complete combustion into the atmosphere.
  • Document CA 1231014 discloses a heating stove comprising: a combustion chamber, a grate therein, upper and lower combustion air inlets to provide a bottom air feed upwardly through fuel from below the grate, and downwardly through fuel from above the fuel, a heat exchanger consisting of a series of vertically oriented horizontally spaced metal plates interconnected so as to form two sets of flow passages, one vertical set for the products of combustion the other horizontal set for conducting a flow of air to be heated.
  • the present invention relates to a porous post combustor to be incorporated in firewood burning stoves or heaters which allow burning gases generated in the primary combustion of firewood.
  • the porosity, the diameter of the particles in the porous medium, the entering velocity of gases, the entering temperature of gases and the percentage of surplus air used in the secondary combustion vary according to the layers of solid particles.
  • the materials to be used must be capable of resisting high temperatures such as the ones developed in this kind of combustors of around of 1 100°C.
  • Figure 4 shows a frontal cut-away view of the inner container and outer cylindrical duct which generate an annular space for the air circulation in the post combustor of a firewood heater.
  • Figure 5 shows a frontal cut-away view of the inner container and cylindrical duct, circulating combustion gases through the annular ring in the post combustor of the firewood heater in the start-up stage o in the pre-heating stage of the post combustor.
  • Figure 7 shows a sectional schematic view of a first embodiment of the post combustor, installed in a firewood heater.
  • Figure 8 shows a sectional schematic view of a second embodiment of the post combustor, installed in a firewood heater.
  • the post combustor (1 ) is formed by a plurality of layers (2) consisting of solid particles which generate an inert porous medium wherein the diameter of particles changes from one layer to the other from the lower end (3) of the post combustor (1 ) towards the upper end (4) of the post combustor (1 ).
  • the diameter and porosity of the particles in the porous medium, the entering velocity of gases, the entering temperature of gases and the percentage of surplus air used in the secondary combustion vary according to the layers of solid particles.
  • the porous medium can be formed by different materials and available geometries and as an appropriate material are considered spheres (3 to 6 mm in diameter) or alumina sponges. Different types of materials are considered for the body of the combustor. Among the materials to be used is, for example, rolled steel, said materials must be capable of resisting the high temperatures normally developed in this type of combustors which are in the range of 1 100°C.
  • the plurality of layers (2) formed by solid particles generating an inert porous medium are contained in an inner container (5) which can be made of iron, steel or another similar material that resists the temperatures generated within the combustion chamber.
  • This inner container (5) has at least one lower opening which allows the passage of entering gases (6) that have already been burned in the combustion chamber or primary chamber.
  • the inner container (5) has at least one upper opening allowing the passage of exhaust gases (7) which were post burned in the post combustor (1 ).
  • the post combustor (1 ) is contained within the inner container (5) which has lower perforated fastening means (8) and upper perforated means (9), which can comprise perforated steel sheets
  • the inner container (5) is surrounded by a tubular duct (10) creating an annular space (1 6) between the outer wall (1 8) of said inner container (5) and the tubular duct (10).
  • the lower annular portion (1 1 ) of the annular space (1 6) is open for the combustion gases to enter (17).
  • a shut-off valve for the passage of gases is installed, formed preferably by a pair of perforated rings one of which is fixed and the other is movable.
  • the opening, regulation or closing of the air shut-off valve (12) is handled by regulation means (13) and the function of which is defining the flow path of gases.
  • This temperature can be monitored with a thermometer or, in a practical way, the gas shut-off valve (12) can be closed when performing the second firewood loading (21 ).
  • the gas shut-off valve (12) is closed and the combustion gas flow (17) passes through the post combustor (1 ), thus achieving a second gas combustion (17) and, therefore also the performance, in operation, of the firewood combustor or heater.
  • the post combustor (1 ) is installed in a firewood heater or combustor (19).
  • the air enters through outlet conducts (20) through the lower part of the firewood combustor or heater (19) which allows to burn the firewood (21 ) within the combustion chamber or primary chamber (22).
  • the combustion gases (17) enter to the post combustor (1 ) that is installed on the lower portion (23) of the chimney or gas exhaust duct (15).
  • the heat generated in the combustion chamber (22) and by the same hot combustion gases (17) within said chamber, allows the plurality of solid particle layers (2) of the post combustor (1 ) to be heated with which the gases passing through the interstices generated among said particles of the plurality of layers (2) end up getting burned, thus generating exhaust gases (24) towards the atmosphere with a non-existent or minimal quantity of pollutant products.
  • the combustion gases (1 ) enter to the post combustor (1 ) which in this embodiment is located over the combustion chamber or primary chamber (22).
  • the post combustor (1 ) is hold by supporting means (25) which also have the function of allowing the combustion gases (17) to pass, during the start-up phase, through the annular space (1 6) and once the post combustor (1 ) is heated, said gasses can pass through it.
  • an extractor can be installed (not shown) in order to force the gas flow.
  • the analysis of the values obtained for the pollutant emissions and thermal efficiency among the heaters of the previous art and a heater with a post combustor as the one of the present invention allows inferring that: a) The heater with a porous post combustor with respect to the conventional heater reduces in a 25% the CO emission, reduces in a 13% the particulate matter emission expressed in gr/hr, reduces in a 62% the concentration of the particulate matter expressed in gr/m3 of emitted gases and increases in a 24% the thermal efficiency.
  • the pellet heater with respect to a conventional heater reduces in a 87% the CO emission, reduces in a 62.3 % the particulate matter emission expressed in gr/hr and increases in a 25% the thermal efficiency.
  • the thermal efficiency is very similar and although the pollutant emissions do not reach the same levels, it must be considered that the pellet stove has a much more complex technology and therefore it is quite expensive in comparison with the present invention.

Landscapes

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

Abstract

L'invention porte sur un dispositif de post-combustion (1) qui permet d'augmenter le rendement thermique et de réduire l'émission de polluants dans un équipement de combustion ou des dispositifs de chauffage à bois (19) ayant une chambre de combustion ou chambre primaire (22) pour brûler du bois (21), générant ainsi des gaz de combustion (17). Ledit dispositif de post-combustion (1) comporte : une pluralité de couches (2) constituées par des particules solides qui génèrent un milieu poreux, ladite pluralité de couches (2) de particules solides qui génèrent ledit milieu poreux étant contenues dans un récipient interne (5). Le récipient interne (5) possède au moins une ouverture inférieure permettant le passage des gaz entrants (6) qui ont déjà été brûlés dans la chambre de combustion ou la chambre primaire (22), et au moins une ouverture supérieure permettant le passage des gaz d'échappement (7) qui ont déjà été brûlés dans le dispositif de post-combustion (1). Le récipient interne (5) est entouré par un conduit tubulaire (10) créant un espace annulaire (16) entre la paroi externe (18) dudit récipient interne (5) et le conduit tubulaire (10), ledit espace annulaire (16) ayant une partie annulaire inférieure (11), pour l'entrée des gaz de combustion (17), et, sur la partie supérieure de l'espace annulaire (16), une soupape d'arrêt des gaz (12) qui est manipulée par des moyens de régulation (13). Sur la partie supérieure de l'espace annulaire (16) se trouve un capuchon conique (14) auquel est relié le conduit des gaz d'échappement (15).
PCT/IB2013/060425 2012-11-30 2013-11-26 Dispositif de post-combustion WO2014083504A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CL3372-2012 2012-11-30
CL2012003372A CL2012003372A1 (es) 2012-11-30 2012-11-30 Post combustor para aumentar la eficiencia termica y reducir la emision de los contaminantes de los equipos calefactores de leña que tienen una camara de combustion, posee una pluralidad de capas de particulas solidas que generan un medio poroso y se encuentran contenidas en un contenedor interior que posee al menos una abertura inferior para los gases de entrada, y al menos una abertura superior para los gases de salida; y metodo asociado.

Publications (2)

Publication Number Publication Date
WO2014083504A2 true WO2014083504A2 (fr) 2014-06-05
WO2014083504A3 WO2014083504A3 (fr) 2014-07-24

Family

ID=50828558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/060425 WO2014083504A2 (fr) 2012-11-30 2013-11-26 Dispositif de post-combustion

Country Status (2)

Country Link
CL (1) CL2012003372A1 (fr)
WO (1) WO2014083504A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016084950A (ja) * 2014-10-23 2016-05-19 株式会社野口鉄工 薪ストーブ
CN107023842A (zh) * 2017-06-08 2017-08-08 山东大学 一种处理有机废气的非均匀式多孔介质燃烧器
WO2021119871A1 (fr) * 2019-12-16 2021-06-24 Universidad Técnica Federico Santa María Système et procédé pour améliorer le processus de combustion d'un combustible solide au moyen d'un milieu poreux inerte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319556A (en) 1981-03-09 1982-03-16 Jamestown Group Catalytic stove
US4363785A (en) 1981-06-25 1982-12-14 Willson Allan C Wood stove having catalytic converter
CA1198641A (fr) 1982-06-24 1985-12-31 Carl F. Piontkowski Poele a bois catalytique
CA1231014A (fr) 1986-09-04 1988-01-05 Zenon Todorski Poele equipe d'un echangeur de chaleur et methode de fabrication connexe
EP0483878A2 (fr) 1990-10-31 1992-05-06 Heribert Posch Dispositif de combustion pour bois et charbon

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR206885A1 (es) * 1973-02-23 1976-08-31 Droff Cheminees Dispositivo de calefaccion de combustion directa para local de habitacion
US4373507A (en) * 1980-10-09 1983-02-15 Jamestown Group Stove construction
US4400356A (en) * 1982-02-01 1983-08-23 United Technologies Corporation Combustion catalyst bed
FR2643443B1 (fr) * 1988-12-20 1993-07-16 Philippe Cheminees Dispositif de recuperation de chaleur pour cheminee a atre
US7275929B2 (en) * 2003-12-22 2007-10-02 Tiegs Paul E Device and method for reducing fireplace particulate emissions
JP2005233519A (ja) * 2004-02-19 2005-09-02 Shoichi Ueno 排煙処理装置、排煙処理装置付きストーブ
EP2534422A1 (fr) * 2010-02-09 2012-12-19 Dr. Pley Environmental GmbH Dispositif pour traiter les gaz d'échappement d'un petit système de chauffage
EP2439446B1 (fr) * 2010-10-08 2018-04-11 Palazzetti Lelio Spa foyer de combustion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319556A (en) 1981-03-09 1982-03-16 Jamestown Group Catalytic stove
US4363785A (en) 1981-06-25 1982-12-14 Willson Allan C Wood stove having catalytic converter
CA1198641A (fr) 1982-06-24 1985-12-31 Carl F. Piontkowski Poele a bois catalytique
CA1231014A (fr) 1986-09-04 1988-01-05 Zenon Todorski Poele equipe d'un echangeur de chaleur et methode de fabrication connexe
EP0483878A2 (fr) 1990-10-31 1992-05-06 Heribert Posch Dispositif de combustion pour bois et charbon

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016084950A (ja) * 2014-10-23 2016-05-19 株式会社野口鉄工 薪ストーブ
CN107023842A (zh) * 2017-06-08 2017-08-08 山东大学 一种处理有机废气的非均匀式多孔介质燃烧器
WO2021119871A1 (fr) * 2019-12-16 2021-06-24 Universidad Técnica Federico Santa María Système et procédé pour améliorer le processus de combustion d'un combustible solide au moyen d'un milieu poreux inerte

Also Published As

Publication number Publication date
WO2014083504A3 (fr) 2014-07-24
CL2012003372A1 (es) 2013-08-09

Similar Documents

Publication Publication Date Title
JP5637690B2 (ja) 固体燃料を燃焼するための燃焼室
EP2884200B1 (fr) Chaudière de chauffage central
US4630553A (en) Dual stage combustion furnace
US4484530A (en) Dual stage combustion furnace
US4584177A (en) Catalytic unit for gas phase catalysis, more especially for use with wood- and other solid fuel-burning stoves
WO2014083504A2 (fr) Dispositif de post-combustion
US20080035137A1 (en) Combustion apparatus
KR101527682B1 (ko) 고효율 친환경 펠렛 난로
CN110762557A (zh) 一种燃煤炉具
RU2471128C1 (ru) Водогрейный твердотопливный котел
CN202182475U (zh) 热回收焚烧炉
CN106247615B (zh) 双燃料锅炉
CN2323269Y (zh) 立式焚烧热水多用炉
US10101023B2 (en) Solid fuel heating device
CN205090424U (zh) 家用燃煤炉具
CN111750344A (zh) 一种反旋烟气分离生物质秸秆炉
CN105157217B (zh) 一种旋风热交换的方法
CN217057607U (zh) 一种生物质炊事烤火炉具
CN214426200U (zh) 热风炉
CN214142215U (zh) 生物质气化低氮燃烧系统
CN210832532U (zh) 一种上挂下托式多燃料炉内成型燃烧炉
CN213599422U (zh) 一种二次供风采暖炉
RU2425294C1 (ru) Термогазохимическая установка
RU2515568C1 (ru) Котел
EP3517840A1 (fr) Chaudière à combustible solide

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13828985

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct app. not ent. europ. phase

Ref document number: 13828985

Country of ref document: EP

Kind code of ref document: A2