WO2015046755A1 - Apparatus for re-combusting combustion exhaust gas - Google Patents

Apparatus for re-combusting combustion exhaust gas Download PDF

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Publication number
WO2015046755A1
WO2015046755A1 PCT/KR2014/007720 KR2014007720W WO2015046755A1 WO 2015046755 A1 WO2015046755 A1 WO 2015046755A1 KR 2014007720 W KR2014007720 W KR 2014007720W WO 2015046755 A1 WO2015046755 A1 WO 2015046755A1
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Prior art keywords
combustion
duct
reburn
heat storage
gas
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PCT/KR2014/007720
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French (fr)
Korean (ko)
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송창모
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(주)한선
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Publication of WO2015046755A1 publication Critical patent/WO2015046755A1/en

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    • 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
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/68—Treating the combustion air or gas, e.g. by filtering, or moistening
    • 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
    • F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, 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
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/13002—Energy recovery by heat storage elements arranged in the combustion chamber
    • 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

  • the present invention relates to a reburn apparatus for combustion flue gas, and more particularly, a combustion flue gas provided between a burner and a heating unit where heating or heat exchange is performed by combustion gas generated from the burner, and discharged after the heating unit is heated or heat exchanged. It relates to a reburn apparatus of the combustion flue gas to reburn.
  • Combustion gas is a gas emitted in the case of flamed combustion, and includes not only fuel and oxidant products but also components not related to combustion.
  • the burner of the conventional burner or the boiler is exhausted into the atmosphere only by the first combustion, and thus, fine dust and pollutants (eg, sulfur oxides, nitrogen oxides, and other pollutants) of the combustion gas directly or indirectly affect the human body. Given.
  • fine dust and pollutants eg, sulfur oxides, nitrogen oxides, and other pollutants
  • Korean Utility Model Publication No. 1999-0038105 discloses a recombustion apparatus of a combustion gas to recombust the combustion gas to remove carbon monoxide and carbon dioxide to reduce environmental pollution.
  • a conventional combustion gas reburn apparatus has a structure in which a ceramic porous plate is provided at a flame outlet of a gas stove to reburn the combustion gas. That is, in a conventional gas stove equipped with a crater, a ceramic porous plate calcined so that a plurality of holes penetrates at a high temperature of 1200 ° C. or higher through a pedestal is installed on a pedestal. As the ceramic porous plate installed is heated through a plurality of holes and the temperature is raised to about 800 to 1000 ° C, combustion gases such as carbon monoxide and carbon dioxide generated by incomplete combustion in the crater are completely removed due to the high heat of the ceramic porous plate. Combustion is made and removed, and at the same time, the combustion temperature of the cooking vessel is increased, so that even if the flame of the crater is cut in half, high heat can be obtained.
  • the conventional combustion gas reburn apparatus does not allow the combustion gas generated during cooking to flow through a pipe or in a trapped form, so that carbon monoxide, which is an air pollutant contained in the combustion gas, and other unburned fuel generated during combustion
  • carbon monoxide which is an air pollutant contained in the combustion gas
  • other unburned fuel generated during combustion There are limitations in reducing subdivision and harmful components, and there is also a problem in that combustion efficiency is lowered, and in particular, the heat released can not be recovered and used.
  • the present invention has been made in order to solve the above problems of the prior art, carbon monoxide, which is an air pollutant contained in the combustion flue gas, unburned components and other harmful components generated during combustion reburned unburned in the combustion flue gas It is an object of the present invention to provide a reburn apparatus for combustion flue gas that can reduce subdivision and harmful components and improve combustion efficiency.
  • Another object of the present invention is to provide a reburn apparatus for the combustion flue gas that can save energy since the heat of the combustion flue gas is reused.
  • An object of the present invention is provided between a burner and a heating unit where heating or heat exchange is performed by combustion gas generated from the burner, and recombustion of combustion exhaust gas for reburning combustion exhaust gas discharged after heating or heat exchange of the heating unit.
  • An apparatus comprising: an intake duct and an exhaust duct in which combustion flue gas discharged from the heating unit is sucked and discharged and spaced apart from each other; A reburn duct interconnecting said intake duct and said exhaust duct, reburning and directing combustion exhaust gas sucked into said intake duct to said exhaust duct; A heat storage plate provided between the intake duct and the exhaust duct so that combustion gas generated from the burner passes, and accumulate heat of the combustion gas and provide it to the reburn duct; And a catalyst portion provided at an inner circumference of the reburn duct and heated by heat provided from the heat storage plate to oxidize and reburn the combustion exhaust gas passing through the reburn duct. Can be.
  • the apparatus may further include a resistor mounted to the intake duct and the exhaust duct and configured to guide the combustion gas to the heat storage plate so that the combustion gas partially stagnant in the heat storage plate area does not flow back into the burner.
  • the catalyst part may be formed of a plate-shaped catalyst plate, and the plurality of catalyst plates may be disposed in a lattice shape on an inner circumference of the reburn duct.
  • the catalyst plate may be coated with any one of platinum, titanium, rhodium, palladium, cobalt, and manganese.
  • the heat storage plate may include a horizontal heat storage plate disposed in parallel to the intake duct and the exhaust duct; And a vertical heat storage plate disposed perpendicular to the horizontal heat storage plate, and the horizontal heat storage plate and the vertical heat storage plate may be disposed in a grid shape at regular intervals.
  • the combustion gas flowing along the outer circumference of the reburn duct and the combustion exhaust gas flowing along the inner circumference of the reburn duct may cross-flow.
  • carbon monoxide which is an air pollutant contained in combustion exhaust gas
  • other unburned components and harmful components generated during combustion may be re-burned to reduce unburned components and harmful components contained in combustion exhaust gas and to improve combustion efficiency.
  • energy reuse can be achieved because the heat of the combustion flue gas is reused.
  • FIG. 1 is a perspective view of a reburn apparatus for combustion flue gas according to the present invention
  • FIG. 2 is a plan view of FIG.
  • FIG. 3 is a front view of FIG. 2;
  • FIG. 4 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 5 is a view showing a state of use of the reburn apparatus of the combustion flue gas according to the present invention as an embodiment.
  • the reburn apparatus 10 of the combustion flue gas according to the present invention includes a burner 71 (see FIG. 5) and a heating unit in which heat or heat exchange is performed by the combustion gas generated from the burner 71.
  • the combustion flue gas provided between (81, see FIG. 5) and discharged after heating or heat-exchanging the heating part 81 is reburned.
  • the reburn apparatus 10 for combustion flue gas includes an intake duct 11, an exhaust duct 21, a reburn duct 31, a heat storage plate 41, and a catalyst unit 51.
  • Intake duct 11 and exhaust duct 21 are spaced apart from each other.
  • the intake duct 11 and the exhaust duct 21 have a rectangular cross-sectional shape, and a volume space in which combustion exhaust gas flows is formed inside each.
  • an intake port 13 through which the combustion exhaust gas discharged from the heating unit 81 is sucked is formed, and in one region of the exhaust duct 21, a reburn duct from the intake duct 11 is formed.
  • An exhaust port 23 through which the combustion flue gas introduced through 31 is discharged to the outside is formed.
  • the intake duct 11 and the exhaust duct 21 is shown as having a cross-sectional shape, but is not limited thereto, and the intake duct 11 and the exhaust duct 21 have a circular, elliptical, polygonal cross section. It may have a shape.
  • the reburn duct 31 is perpendicular to the intake duct 11 and the exhaust duct 21 and interconnects in communication with the intake duct 11 and the exhaust duct 21.
  • the reburn duct 31 receives heat from the heat storage plate 41 to reburn the combustion exhaust gas sucked from the intake duct 11 and guides the exhaust duct 21 to the exhaust duct 21.
  • the reburn duct 31 has a rectangular cross-sectional shape, and a volume space in which the combustion exhaust gas flows is formed inside the reburn duct 31. In this embodiment, five reburn ducts 31 are provided with a space from each other. Meanwhile, the quantity of the reburn duct 31 is not limited thereto, and the reburn duct 31 may be selectively provided at least one according to the combustion conditions.
  • the heat storage plate 41 is provided between the intake duct 11 and the exhaust duct 21 to allow the combustion gas generated from the burner 71 to pass therethrough, and accumulates heat of the combustion gas and provides it to the reburn duct 31. .
  • the heat storage plate 41 includes a horizontal heat storage plate 43 and a vertical heat storage plate 45.
  • the horizontal heat storage plate 43 is disposed in parallel to the intake duct 11 and the exhaust duct 21, and the reburn duct 31 is penetrated to contact the outer circumference of the reburn duct 31.
  • the vertical heat storage plate 45 is perpendicular to the horizontal heat storage plate 43 and is disposed between the reburn ducts 31, and is coupled to the horizontal heat storage plate 43 to form a grid at regular intervals. Accordingly, as the horizontal heat storage plate 43 and the vertical heat storage plate 45 form a lattice shape, a plurality of rectangular cross-sectional shapes are formed between the horizontal heat storage plate 43, the vertical heat storage plate 45, and the reburn duct 31, respectively.
  • the combustion gas passage hole 47 is formed.
  • the heat storage plate 41 accumulates heat by combustion gas, and may generate secondary combustion by heat storage at least at 800 ° C. or more, and more preferably, maintains at 1200 to 1300 ° C. to improve thermal efficiency. have. Secondary combustion does not occur below 800 ° C., and when the temperature exceeds 1300 ° C., the heat storage plate 41 is damaged, and the heat storage plate may be maintained at 800 to 1300 ° C. Therefore, the incomplete gas generated during combustion is oxidized by the heat storage plate 41 when passing through the combustion gas passage hole 47 and is secondaryly burned, that is, excess enthalpy combustion occurs. At this time, the oxygen concentration of the combustion gas discharged from the combustion gas passage hole 47 is lower than the oxygen concentration of the combustion gas flowing into the combustion gas passage hole 47.
  • the heat storage plate 41 in a lattice shape between the intake duct 11 and the exhaust duct 21, the combustion gas flowing along the outer circumference of the reburn duct 31 and the reburn duct 31 Combustion flue gases flowing along the inner circumference are cross-flowed.
  • the combustion gas and the combustion exhaust gas are uniformly contacted over the entire region of the reburn duct 31, so that the dead area is reduced, so that the combustion efficiency of the combustion exhaust gas of the reburn duct 31 can be improved.
  • the heat storage plate 41 may be made of stainless steel.
  • the catalyst part 51 is provided in the inner periphery of the reburn duct 31, is heated by heat provided from the heat storage plate 41, and oxidizes and burns the combustion flue gas passing through the reburn duct 31. Since the catalyst part 51 is heated to high temperature by the heat transferred from the heat storage plate 41 through the reburn duct 31, the catalyst flue gas 3 burns the combustion exhaust gas flowing through the inner circumference of the reburn duct 31. Accordingly, carbon monoxide, which is an air pollutant contained in the combustion flue gas flowing along the inner circumference of the reburn duct 31, and other unburned components and harmful components generated during combustion are adsorbed and oxidized by the catalyst unit 51 to be reburned. Therefore, not only the unburned components and harmful components contained in the combustion exhaust gas can be reduced, but also the combustion efficiency can be improved.
  • a plurality of catalyst plates having a plate shape as the catalyst part 51 is shown.
  • the plurality of catalyst plates are arranged in a lattice shape so that combustion flue gas flows smoothly in the inner circumference of the reburn duct 31.
  • the catalyst plate may be coated with any one of platinum, titanium, rhodium, palladium, cobalt, and manganese so as to promote oxidation of combustion exhaust gas.
  • the catalyst unit 51 is described as having a plurality of catalyst plates, but the present invention is not limited thereto, and one catalyst plate as the catalyst unit 51 is provided at the center of the reburn duct 31 in the longitudinal direction thereof. It may be arranged along the coating layer, and a coating layer made of any one of platinum, titanium, rhodium, palladium, cobalt, and manganese may be applied along the inner circumference of the reburn duct 31.
  • the reburn apparatus 10 of the combustion flue gas according to the present invention has a resistor 61 for guiding flow to the heat storage plate 41 so that the combustion gas partially stagnant in the heat storage plate 41 does not flow back into the burner 71. More).
  • the resistor 61 extends from one side edges of the lower portions of the intake duct 11 and the exhaust duct 21 to be firmly supported by a separate mechanism, and is perpendicular to the bracket 63 and reburned duct 31. Bent inclined toward the lower portion of the reburn duct 31 from the extension 65 so as to form a turning flow space between the extension portion 65 and the bracket 63 and the extension 65. Bent portion 67 is included.
  • the resistor 61 may not be able to pass through the combustion gas passage hole 47 due to thermal stress generated in the combustion gas passage hole 47 of the heat storage plate 41 due to the hot gas generated during combustion.
  • the combustion gas is rotated and flows again to the combustion gas passage hole 47 of the heat storage plate 41. Accordingly, the backflow of the combustion gas is prevented from flowing into the burner 71, thereby reducing damage of the burner 71.
  • FIG. 5 an example in which the reburn apparatus 10 for combustion flue gas according to the present invention is applied to a coffee roaster apparatus as an embodiment will be described.
  • the flows of the combustion gas and the combustion exhaust gas are shown by arrows.
  • the reburn apparatus 10 of the combustion flue gas according to the present invention is disposed above the burner 71, and as the heating portion 81 above the reburn apparatus 10 of the combustion flue gas.
  • the combustion gas generated from the burner 71 flows to the roaster which is the heating part 81 via the reburn apparatus 10 of the combustion flue gas which concerns on this invention.
  • the heat storage plate 41 of the re-combustion apparatus 10 of the combustion flue gas absorbs high temperature heat from the combustion gas passing through the combustion gas passage hole 47 and accumulates heat.
  • the heat accumulated in the heat storage plate 41 is transferred to the reburn duct 31 to heat the reburn duct 31 and at the same time to heat the combustion exhaust gas flowing through the reburn duct 31.
  • the heat storage plate 41 since the heat storage plate 41 accumulates heat while maintaining a temperature of 1200 to 1300 ° C. from a high temperature combustion gas, the heat storage plate 41 oxidizes the flame and incomplete gas generated during combustion, and passes through the combustion gas passage hole 47. The combustion gas undergoes secondary combustion, ie excess enthalpy combustion.
  • the combustion gas flowing into the roaster which is the heating section 81, roasts the coffee beans in the roaster, which is the heating section 81, and then intakes the duct 11 through the first connecting duct 85 in the form of exhaust gas, that is, combustion exhaust gas. It is introduced into and passed through the reburn duct 31, and is discharged through the exhaust duct 21 through the second connecting duct 91 to the subsequent process or outside.
  • the catalyst portion 51 disposed on the inner circumference of the reburn duct 31 is heated to a high temperature by the heat transferred from the heat storage plate 41 through the reburn duct 31, and thus the reburn duct 31
  • the combustion flue gas flowing in the inner circumference of the gas is subjected to tertiary combustion by the catalyst unit 51. That is, carbon monoxide contained in the combustion flue gas, other unburned powder generated during combustion, coffee beans shell and harmful components generated during roasting are adsorbed and oxidized by the catalyst unit 51 to be reburned.
  • the heat of the combustion gas flowing to the heating part is accumulated through the heat storage plate, and the heat of the heat storage plate is transferred to the reburn duct through which the combustion flue gas discharged from the heating part flows, and the inside of the reburn duct
  • the catalyst unit is oxidized to burn the carbon monoxide, which is an air pollutant contained in the combustion flue gas, and other unburned components and harmful components generated during combustion to reburn the unburned components and harmful components contained in the combustion flue gas. It can reduce and improve the combustion efficiency.
  • the heat of the combustion flue gas can be reused, thereby enabling energy saving.
  • the combustion apparatus for the combustion exhaust gas of the present invention has been described in the coffee roaster device is used, but not limited to this, the combustion apparatus of the combustion exhaust gas according to the present invention does not perform secondary combustion. It can be used for all existing installations that cannot be used (eg gas boilers, diesel boilers, coffee bean roasters, restaurant grills, gas stoves, oven stoves, portable stoves, etc.).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Incineration Of Waste (AREA)

Abstract

The present invention relates to an apparatus for re-combusting combustion exhaust gas that is placed between a burner and a heating part heated by or exchanging heat with combustion gas generated from the burner and re-combusts combustion exhaust gas which is discharged after heating or exchanging heat with the heating part. The apparatus comprises: an intake duct and an exhaust duct that are placed to be separated from each other and contain the combustion exhaust gas, which is discharged from the heating part, introduced thereinto and discharged therefrom, respectively; a re-combustion duct that interconnects the intake duct and the exhaust duct, re-combusts the combustion exhaust gas introduced into the intake duct, and guides the combustion exhaust gas into the exhaust duct; a heat storage plate that is placed between the intake duct and the exhaust duct to pass the combustion gas generated from the burner therethrough and stores the heat of the combustion gas to provide the stored heat to the re-combustion duct; and a catalyst part that is placed on the inner peripheral surface of the re-combustion duct and oxidizes and re-combusts the combustion exhaust gas which is heated by the heat provided from the heat storage plate and passes through the re-combustion duct.

Description

연소 배가스의 재연소 장치Reburning apparatus of combustion flue gas
본 발명은 연소 배가스의 재연소 장치에 관한 것으로, 보다 상세하게는 버너와, 버너로부터 발생되는 연소 가스에 의해 가열 또는 열교환이 이루어지는 가열부 사이에 마련되어, 가열부를 가열 또는 열교환한 후 배출되는 연소 배가스를 재연소하는 연소 배가스의 재연소 장치에 관한 것이다.The present invention relates to a reburn apparatus for combustion flue gas, and more particularly, a combustion flue gas provided between a burner and a heating unit where heating or heat exchange is performed by combustion gas generated from the burner, and discharged after the heating unit is heated or heat exchanged. It relates to a reburn apparatus of the combustion flue gas to reburn.
연소 가스는 화염이 있는 연소의 경우에서 방출되는 가스로, 연료와 산화제의 생성물밖에 연소에 관계하지 않은 성분도 포함된다.Combustion gas is a gas emitted in the case of flamed combustion, and includes not only fuel and oxidant products but also components not related to combustion.
현재의 모든 가스 기구는 1차 연소 후 2차 연소를 할 수 있는 기구가 미설치되어 있고 또한 연소 시 발생되는 미량의 가스로 인해 대기오염이나 인체에 영향을 주는 연구는 없어 심각성을 느끼지 못하는 현실이다. 하지만 인간이 살아가는데 필수적인 불, 연소장치, 가스렌지, 보일러, 기타 불을 이용한 조리기구가 연소 시 발생시키는 일산화탄소 또는 황산화물, 질소산화물의 수치와 기타 환경에 악영향을 주는 가스의 통계를 본다면 심각한 오염원이라 할 수 있다.All current gas appliances are not equipped with a mechanism capable of performing secondary combustion after primary combustion, and there is no research that affects air pollution or human body due to the trace amount of gas generated during combustion, and thus, the reality is not felt serious. However, the statistics of carbon monoxide, sulfur oxides and nitrogen oxides produced by combustion of fires, combustors, stoves, boilers and other cookware that are essential for human life are serious sources of pollution. can do.
연소 가스를 분석하면 연소 가스는 대기 중에 있는 질소, 황 기타 모든 물질을 함께 연소하는 것을 알 수 있다. 공기 중에는 산소뿐만 아니라 수많은 물질들이 있기 때문에, 연소시 발생하는 산화물은 대기로 여과 없이 방출되어 환경을 오염시키게 된다.Analysis of the combustion gases shows that the combustion gases burn together nitrogen, sulfur and all other substances in the atmosphere. Since there are numerous substances in the air as well as oxygen, the oxides produced during combustion are released to the atmosphere without filtration, polluting the environment.
상기와 같이 종래의 버너나 보일러의 버너는 1차 연소만으로 대기중으로 배기되므로, 연소 가스의 미세분진 및 오염물질(예: 황산화물, 질소산화물 기타 오염물질 등)이 직접, 간접적으로 인체에 영향을 주게 된다.As described above, the burner of the conventional burner or the boiler is exhausted into the atmosphere only by the first combustion, and thus, fine dust and pollutants (eg, sulfur oxides, nitrogen oxides, and other pollutants) of the combustion gas directly or indirectly affect the human body. Given.
한편, 대한민국 공개실용신안공보 제1999-0038105호에는 연소 가스를 재연소시켜 일산화탄소와 이산화탄소를 제거하여 환경공해를 감소시키는 연소 가스의 재연소 장치가 개시되어 있다.On the other hand, Korean Utility Model Publication No. 1999-0038105 discloses a recombustion apparatus of a combustion gas to recombust the combustion gas to remove carbon monoxide and carbon dioxide to reduce environmental pollution.
종래의 연소 가스의 재연소 장치는 가스렌지의 화염분출구에 세라믹 다공판을 설치하여 연소 가스를 재연소시키는 구성을 가진다. 즉, 화구가 설치된 통상의 가스렌지에 있어서 화구의 상부에 1200℃이상의 고열에서 복수의 구멍이 관통되게 소성한 세라믹 다공판을 받침대에 의거 설치하여, 화구에서 가스가 고열로 소각연소되면 그 상부에 설치된 세라믹 다공판이 복수의 구멍으로 화기가 통과되면서 가열되어 온도가 약 800∼1000℃로 상승됨에 따라 화구에서 불완전연소로 인해 발생되는 일산화탄소 및 이산화탄소 등 연소 가스가 세라믹 다공판의 높은 고열로 인해 완전연소가 이루어져 제거되고, 이와 동시에 조리용기의 연소온도가 상승되어 화구의 불꽃을 절반으로 줄여도 높은 열량을 얻을 수 있게 된다.A conventional combustion gas reburn apparatus has a structure in which a ceramic porous plate is provided at a flame outlet of a gas stove to reburn the combustion gas. That is, in a conventional gas stove equipped with a crater, a ceramic porous plate calcined so that a plurality of holes penetrates at a high temperature of 1200 ° C. or higher through a pedestal is installed on a pedestal. As the ceramic porous plate installed is heated through a plurality of holes and the temperature is raised to about 800 to 1000 ° C, combustion gases such as carbon monoxide and carbon dioxide generated by incomplete combustion in the crater are completely removed due to the high heat of the ceramic porous plate. Combustion is made and removed, and at the same time, the combustion temperature of the cooking vessel is increased, so that even if the flame of the crater is cut in half, high heat can be obtained.
그러나, 종래의 연소 가스의 재연소 장치는 구조상 조리시 발생된 연소 가스가 배관을 통하여 흐르거나 포집형태로 흐르도록 하지 못하므로, 연소 가스에 함유된 대기오염 물질인 일산화탄소, 기타 연소시 발생되는 미연소분 및 유해 성분을 저감하는데 있어서 한계가 있고, 또한 연소 효율이 저하되며, 특히 방출 열을 회수하여 사용할 수 없는 문제점이 있다.However, the conventional combustion gas reburn apparatus does not allow the combustion gas generated during cooking to flow through a pipe or in a trapped form, so that carbon monoxide, which is an air pollutant contained in the combustion gas, and other unburned fuel generated during combustion There are limitations in reducing subdivision and harmful components, and there is also a problem in that combustion efficiency is lowered, and in particular, the heat released can not be recovered and used.
본 발명은 상기와 같은 종래 기술의 제반 문제점을 해소하기 위하여 안출한 것으로, 연소 배가스에 함유된 대기오염 물질인 일산화탄소, 기타 연소시 발생되는 미연소분 및 유해 성분을 재연소시켜 연소 배가스에 함유된 미연소분 및 유해 성분을 저감시키며 연소 효율을 향상시킬 수 있는 연소 배가스의 재연소 장치를 제공하는 것을 목적으로 한다.The present invention has been made in order to solve the above problems of the prior art, carbon monoxide, which is an air pollutant contained in the combustion flue gas, unburned components and other harmful components generated during combustion reburned unburned in the combustion flue gas It is an object of the present invention to provide a reburn apparatus for combustion flue gas that can reduce subdivision and harmful components and improve combustion efficiency.
또한, 본 발명의 다른 목적은, 연소 배가스의 열을 재사용하므로 에너지 절감을 도모할 수 있는 연소 배가스의 재연소 장치를 제공한다.In addition, another object of the present invention is to provide a reburn apparatus for the combustion flue gas that can save energy since the heat of the combustion flue gas is reused.
본 발명의 목적은, 버너와, 상기 버너로부터 발생되는 연소 가스에 의해 가열 또는 열교환이 이루어지는 가열부 사이에 마련되어, 상기 가열부를 가열 또는 열교환한 후 배출되는 연소 배가스를 재연소하는 연소 배가스의 재연소 장치에 있어서, 상기 가열부로부터 배출된 연소 배가스가 흡입 및 배출되며, 상호 이격 배치되는 흡기 덕트 및 배기 덕트; 상기 흡기 덕트와 상기 배기 덕트를 상호 연결하며, 상기 흡기 덕트로 흡입된 연소 배가스를 재연소하며 상기 배기 덕트로 안내하는 재연소 덕트; 상기 버너로부터 발생된 연소 가스가 통과하도록 상기 흡기 덕트와 상기 배기 덕트 사이에 마련되어, 상기 연소 가스의 열을 축열하여 상기 재연소 덕트에 제공하는 축열판; 및 상기 재연소 덕트의 내주에 마련되어, 상기 축열판으로부터 제공된 열에 의해 가열되어 상기 재연소 덕트를 통과하는 상기 연소 배가스를 산화시키며 재연소하는 촉매부를 포함하는, 연소 배가스의 재연소 장치에 의해 달성될 수 있다.An object of the present invention is provided between a burner and a heating unit where heating or heat exchange is performed by combustion gas generated from the burner, and recombustion of combustion exhaust gas for reburning combustion exhaust gas discharged after heating or heat exchange of the heating unit. An apparatus comprising: an intake duct and an exhaust duct in which combustion flue gas discharged from the heating unit is sucked and discharged and spaced apart from each other; A reburn duct interconnecting said intake duct and said exhaust duct, reburning and directing combustion exhaust gas sucked into said intake duct to said exhaust duct; A heat storage plate provided between the intake duct and the exhaust duct so that combustion gas generated from the burner passes, and accumulate heat of the combustion gas and provide it to the reburn duct; And a catalyst portion provided at an inner circumference of the reburn duct and heated by heat provided from the heat storage plate to oxidize and reburn the combustion exhaust gas passing through the reburn duct. Can be.
상기 흡기 덕트 및 상기 배기 덕트에 장착되어, 상기 축열판 영역에서 부분 정체된 상기 연소 가스가 상기 버너로 재유입하지 않도록 상기 축열판으로 유동 안내하는 레지스터를 더 포함할 수 있다.The apparatus may further include a resistor mounted to the intake duct and the exhaust duct and configured to guide the combustion gas to the heat storage plate so that the combustion gas partially stagnant in the heat storage plate area does not flow back into the burner.
상기 촉매부는 판 형상의 촉매판으로 이루어지며, 복수의 상기 촉매판이 상기 재연소 덕트의 내주에 격자형상으로 배치될 수 있다.The catalyst part may be formed of a plate-shaped catalyst plate, and the plurality of catalyst plates may be disposed in a lattice shape on an inner circumference of the reburn duct.
상기 촉매판은 백금, 티타늄, 로듐, 팔라듐, 코발트, 망간 중 어느 하나의 재질로 코팅될 수 있다.The catalyst plate may be coated with any one of platinum, titanium, rhodium, palladium, cobalt, and manganese.
상기 축열판은, 상기 흡기 덕트 및 배기 덕트에 평행하게 배치되는 가로 축열판; 및 상기 가로 축열판에 대해 수직하게 배치되는 세로 축열판을 포함하며, 상기 가로 축열판 및 상기 세로 축열판은 일정 간격으로 격자 형상으로 배치될 수 있다.The heat storage plate may include a horizontal heat storage plate disposed in parallel to the intake duct and the exhaust duct; And a vertical heat storage plate disposed perpendicular to the horizontal heat storage plate, and the horizontal heat storage plate and the vertical heat storage plate may be disposed in a grid shape at regular intervals.
상기 재연소 덕트의 외주를 따라 유동하는 연소 가스와 상기 재연소 덕트의 내주를 따라 유동하는 연소 배가스는 직교류 유동(cross-flow)할 수 있다.The combustion gas flowing along the outer circumference of the reburn duct and the combustion exhaust gas flowing along the inner circumference of the reburn duct may cross-flow.
본 발명에 따르면, 연소 배가스에 함유된 대기오염 물질인 일산화탄소, 기타 연소시 발생되는 미연소분 및 유해 성분을 재연소시켜 연소 배가스에 함유된 미연소분 및 유해 성분을 저감시키며 연소 효율을 향상시킬 수 있다. 또한, 연소 배가스의 열을 재사용하므로 에너지 절감을 도모할 수 있다.According to the present invention, carbon monoxide, which is an air pollutant contained in combustion exhaust gas, and other unburned components and harmful components generated during combustion may be re-burned to reduce unburned components and harmful components contained in combustion exhaust gas and to improve combustion efficiency. . In addition, energy reuse can be achieved because the heat of the combustion flue gas is reused.
도 1은 본 발명에 따른 연소 배가스의 재연소 장치의 사시도,1 is a perspective view of a reburn apparatus for combustion flue gas according to the present invention;
도 2는 도 1의 평면도,2 is a plan view of FIG.
도 3은 도 2의 정면도,3 is a front view of FIG. 2;
도 4는 도 1의 A-A선에 따른 단면도,4 is a cross-sectional view taken along the line A-A of FIG.
도 5는 일 실시예로서 본 발명에 따른 연소 배가스의 재연소 장치의 사용상태를 도시한 도면이다.5 is a view showing a state of use of the reburn apparatus of the combustion flue gas according to the present invention as an embodiment.
이하에서는 첨부도면을 참조하여 본 발명에 대해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1 내지 도 4에는 본 발명에 따른 연소 배가스의 재연소 장치가 도시되어 있다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 연소 배가스의 재연소 장치(10)는 버너(71, 도 5참조)와, 버너(71)로부터 발생되는 연소 가스에 의해 가열 또는 열교환이 이루어지는 가열부(81, 도 5참조) 사이에 마련되어 가열부(81)를 가열 또는 열교환한 후 배출되는 연소 배가스를 재연소한다. 연소 배가스의 재연소 장치(10)는 흡기 덕트(11), 배기 덕트(21), 재연소 덕트(31), 축열판(41), 촉매부(51)를 포함한다.1 to 4 show a reburn apparatus for combustion flue gas according to the present invention. As shown in these figures, the reburn apparatus 10 of the combustion flue gas according to the present invention includes a burner 71 (see FIG. 5) and a heating unit in which heat or heat exchange is performed by the combustion gas generated from the burner 71. The combustion flue gas provided between (81, see FIG. 5) and discharged after heating or heat-exchanging the heating part 81 is reburned. The reburn apparatus 10 for combustion flue gas includes an intake duct 11, an exhaust duct 21, a reburn duct 31, a heat storage plate 41, and a catalyst unit 51.
흡기 덕트(11)와 배기 덕트(21)는 상호 간격을 두고 이격 배치된다. 흡기 덕트(11)와 배기 덕트(21)는 사각단면 형상을 가지며, 각각 내부에 연소 배가스가 유동하는 체적 공간이 형성되어 있다. 흡기 덕트(11)의 일 영역에는 가열부(81)로부터 배출된 연소 배가스가 흡입되는 흡기구(13)가 형성되어 있고, 배기 덕트(21)의 일 영역에는 흡기 덕트(11)로부터 재연소 덕트(31)를 거쳐 유입된 연소 배가스가 외부로 배출되는 배기구(23)가 형성되어 있다. 본 실시예에서는 흡기 덕트(11) 및 배기 덕트(21)가 사각단면의 형상을 갖는 것으로 도시되어 있지만 이에 한정되지 않으며, 흡기 덕트(11) 및 배기 덕트(21)는 원형, 타원형, 다각형의 단면형상을 가질 수 있다. Intake duct 11 and exhaust duct 21 are spaced apart from each other. The intake duct 11 and the exhaust duct 21 have a rectangular cross-sectional shape, and a volume space in which combustion exhaust gas flows is formed inside each. In one region of the intake duct 11, an intake port 13 through which the combustion exhaust gas discharged from the heating unit 81 is sucked is formed, and in one region of the exhaust duct 21, a reburn duct from the intake duct 11 is formed. An exhaust port 23 through which the combustion flue gas introduced through 31 is discharged to the outside is formed. In the present embodiment, the intake duct 11 and the exhaust duct 21 is shown as having a cross-sectional shape, but is not limited thereto, and the intake duct 11 and the exhaust duct 21 have a circular, elliptical, polygonal cross section. It may have a shape.
재연소 덕트(31)는 흡기 덕트(11)와 배기 덕트(21)에 수직을 이루며 흡기 덕트(11)와 배기 덕트(21)에 연통가능하게 상호 연결한다. 재연소 덕트(31)는 축열판(41)으로부터 열을 제공받아 흡기 덕트(11)로부터 흡입된 연소 배가스를 재연소하며 배기 덕트(21)로 안내하는 역할을 한다. 재연소 덕트(31)는 사각단면 형상을 가지며, 재연소 덕트(31)의 내부에는 연소 배가스가 유동하는 체적 공간이 형성되어 있다. 본 실시예에서는 5개의 재연소 덕트(31)가 상호 간격을 두고 마련되어 있다. 한편, 재연소 덕트(31)의 수량은 이에 한정되지 않으며, 재연소 덕트(31)는 연소 조건에 따라 하나 이상 선택적으로 마련될 수 있다.The reburn duct 31 is perpendicular to the intake duct 11 and the exhaust duct 21 and interconnects in communication with the intake duct 11 and the exhaust duct 21. The reburn duct 31 receives heat from the heat storage plate 41 to reburn the combustion exhaust gas sucked from the intake duct 11 and guides the exhaust duct 21 to the exhaust duct 21. The reburn duct 31 has a rectangular cross-sectional shape, and a volume space in which the combustion exhaust gas flows is formed inside the reburn duct 31. In this embodiment, five reburn ducts 31 are provided with a space from each other. Meanwhile, the quantity of the reburn duct 31 is not limited thereto, and the reburn duct 31 may be selectively provided at least one according to the combustion conditions.
*축열판(41)은 버너(71)로부터 발생된 연소 가스가 통과하도록 흡기 덕트(11)와 배기 덕트(21) 사이에 마련되어, 연소 가스의 열을 축열하여 재연소 덕트(31)에 제공한다. 축열판(41)은 가로 축열판(43) 및 세로 축열판(45)을 포함한다.The heat storage plate 41 is provided between the intake duct 11 and the exhaust duct 21 to allow the combustion gas generated from the burner 71 to pass therethrough, and accumulates heat of the combustion gas and provides it to the reburn duct 31. . The heat storage plate 41 includes a horizontal heat storage plate 43 and a vertical heat storage plate 45.
가로 축열판(43)은 흡기 덕트(11) 및 배기 덕트(21)에 평행하게 배치되며, 재연소 덕트(31)의 외주와 접촉하도록 재연소 덕트(31)가 관통 결합된다.The horizontal heat storage plate 43 is disposed in parallel to the intake duct 11 and the exhaust duct 21, and the reburn duct 31 is penetrated to contact the outer circumference of the reburn duct 31.
세로 축열판(45)은 가로 축열판(43)에 대해 수직을 이루며 재연소 덕트(31) 사이에 배치되며, 일정 간격으로 격자 형상을 이루도록 가로 축열판(43)과 결합된다. 이에, 가로 축열판(43)과 세로 축열판(45)이 격자 형상을 형성함에 따라 가로 축열판(43)과 세로 축열판(45)과 재연소 덕트(31) 사이에는 각각 사각단면 형상의 복수의 연소 가스통과공(47)이 형성된다. The vertical heat storage plate 45 is perpendicular to the horizontal heat storage plate 43 and is disposed between the reburn ducts 31, and is coupled to the horizontal heat storage plate 43 to form a grid at regular intervals. Accordingly, as the horizontal heat storage plate 43 and the vertical heat storage plate 45 form a lattice shape, a plurality of rectangular cross-sectional shapes are formed between the horizontal heat storage plate 43, the vertical heat storage plate 45, and the reburn duct 31, respectively. The combustion gas passage hole 47 is formed.
한편, 버너(71)에서 발생하는 연소 가스는 축열판(41)의 연소 가스통과공(47)을 통과하게 되므로, 버너(71)에서 연소시 발생하는 입자가 큰 미연분은 연소 가스통과공(47)에 의해 걸러지게 된다.On the other hand, since the combustion gas generated in the burner 71 passes through the combustion gas through hole 47 of the heat storage plate 41, the unburned fine particles generated during combustion in the burner 71 have a large amount of combustion gas through hole ( 47).
그리고, 축열판(41)은 연소 가스에 의해 열을 축적하며, 적어도 800℃ 이상에서 축열에 의해 2차 연소를 발생시킬 수 있고, 보다 바람직하게는 1200~1300℃로 유지하여 열효율을 향상시킬 수 있다. 800℃ 미만에서는 2차 연소가 발생하지 않고, 1300℃를 초과하면 축열판(41)이 손상되므로, 축열판은 800~1300℃로 유지될 수 있다. 따라서, 연소시 발생된 불완전 가스는 연소 가스통과공(47) 통과시 축열판(41)에 의해 산화되며 2차 연소되는, 즉 초과 엔탈피 연소가 이루어진다. 이 때, 연소 가스 통과공(47)으로부터 배출된 연소 가스의 산소농도는 연소 가스통과공(47)으로 유입되는 연소 가스의 산소농도보다 더 낮아지게 된다. In addition, the heat storage plate 41 accumulates heat by combustion gas, and may generate secondary combustion by heat storage at least at 800 ° C. or more, and more preferably, maintains at 1200 to 1300 ° C. to improve thermal efficiency. have. Secondary combustion does not occur below 800 ° C., and when the temperature exceeds 1300 ° C., the heat storage plate 41 is damaged, and the heat storage plate may be maintained at 800 to 1300 ° C. Therefore, the incomplete gas generated during combustion is oxidized by the heat storage plate 41 when passing through the combustion gas passage hole 47 and is secondaryly burned, that is, excess enthalpy combustion occurs. At this time, the oxygen concentration of the combustion gas discharged from the combustion gas passage hole 47 is lower than the oxygen concentration of the combustion gas flowing into the combustion gas passage hole 47.
한편, 축열판(41)은 연소시 고온의 연소 가스에 노출됨에 따라 연소 가스통과공(47)의 주변의 축열판(41)에 열응력이 발생하여 연소 가스통과공(47)에 부압이 발생하게 되며, 이에 연소시 일정 압력 이상으로 연소 가스를 송풍시킬 필요가 있다. 이 때, 일정 압력 이상으로 연소 가스를 연소 가스통과공(47)에 통과시킴으로써, 연소 효율의 향상을 도모할 수 있게 된다.On the other hand, as the heat storage plate 41 is exposed to high temperature combustion gas during combustion, thermal stress is generated in the heat storage plate 41 around the combustion gas passing hole 47, and a negative pressure is generated in the combustion gas passing hole 47. In this case, it is necessary to blow the combustion gas above a certain pressure during combustion. At this time, by passing the combustion gas through the combustion gas passage hole 47 above a predetermined pressure, it is possible to improve the combustion efficiency.
이와 같이, 흡기 덕트(11)와 배기 덕트(21) 사이에 축열판(41)을 격자형상으로 배치함으로써, 재연소 덕트(31)의 외주를 따라 유동하는 연소 가스와 재연소 덕트(31)의 내주를 따라 유동하는 연소 배가스는 직교류 유동(cross-flow)하게 된다. 이로써, 연소 가스와 연소 배가스가 재연소 덕트(31)의 전 영역에 걸쳐 골고루 접촉하게 되어 데드 영역이 저감되므로 재연소 덕트(31)의 연소 배가스의 연소 효율을 향상시킬 수 있다.Thus, by arranging the heat storage plate 41 in a lattice shape between the intake duct 11 and the exhaust duct 21, the combustion gas flowing along the outer circumference of the reburn duct 31 and the reburn duct 31 Combustion flue gases flowing along the inner circumference are cross-flowed. As a result, the combustion gas and the combustion exhaust gas are uniformly contacted over the entire region of the reburn duct 31, so that the dead area is reduced, so that the combustion efficiency of the combustion exhaust gas of the reburn duct 31 can be improved.
여기서, 축열판(41)의 재질은 스테인레스 재질일 수 있다.Here, the heat storage plate 41 may be made of stainless steel.
촉매부(51)는 재연소 덕트(31)의 내주에 마련되어, 축열판(41)으로부터 제공된 열에 의해 가열되어 재연소 덕트(31)를 통과하는 연소 배가스를 산화시키며 재연소한다. 촉매부(51)는 축열판(41)으로부터 재연소 덕트(31)를 거쳐 전달된 열에 의해 고온으로 가열되므로, 재연소 덕트(31)의 내주를 유동하는 연소 배가스를 3차 연소시킨다. 따라서, 재연소 덕트(31)의 내주를 따라 유동하는 연소 배가스에 함유된 대기오염 물질인 일산화탄소, 기타 연소시 발생되는 미연소분 및 유해 성분은 촉매부(51)에 의해 흡착 및 산화되어 재연소되고, 이에 연소 배가스에 함유된 미연소분 및 유해 성분을 저감할 뿐만 아니라 연소 효율을 향상시킬 수 있게 된다.The catalyst part 51 is provided in the inner periphery of the reburn duct 31, is heated by heat provided from the heat storage plate 41, and oxidizes and burns the combustion flue gas passing through the reburn duct 31. Since the catalyst part 51 is heated to high temperature by the heat transferred from the heat storage plate 41 through the reburn duct 31, the catalyst flue gas 3 burns the combustion exhaust gas flowing through the inner circumference of the reburn duct 31. Accordingly, carbon monoxide, which is an air pollutant contained in the combustion flue gas flowing along the inner circumference of the reburn duct 31, and other unburned components and harmful components generated during combustion are adsorbed and oxidized by the catalyst unit 51 to be reburned. Therefore, not only the unburned components and harmful components contained in the combustion exhaust gas can be reduced, but also the combustion efficiency can be improved.
본 실시예에서는 촉매부(51)로서 판 형상을 갖는 복수의 촉매판이 도시되어 있다. 복수의 촉매판은 재연소 덕트(31)의 내주에 연소 배가스가 원활하게 유동하도록 격자형상을 이루며 배치되어 있다. 여기서, 촉매판에는 연소 배가스의 산화를 촉진하도록 백금, 티타늄, 로듐, 팔라듐, 코발트, 망간 중 어느 하나의 재질로 코팅될 수 있다.In this embodiment, a plurality of catalyst plates having a plate shape as the catalyst part 51 is shown. The plurality of catalyst plates are arranged in a lattice shape so that combustion flue gas flows smoothly in the inner circumference of the reburn duct 31. Here, the catalyst plate may be coated with any one of platinum, titanium, rhodium, palladium, cobalt, and manganese so as to promote oxidation of combustion exhaust gas.
한편, 본 실시예에서는 촉매부(51)로서 복수의 촉매판이 마련되어 있는 것으로 설명하고 있지만 이에 한정되지 않으며, 촉매부(51)로서 하나의 촉매판을 재연소 덕트(31)의 중심부에 그 길이방향을 따라 배치할 수 있고, 또한 백금, 티타늄, 로듐, 팔라듐, 코발트, 망간 중 어느 하나의 재질로 이루어진 코팅층을 재연소 덕트(31)의 내주를 따라 도포할 수도 있다.In the present embodiment, the catalyst unit 51 is described as having a plurality of catalyst plates, but the present invention is not limited thereto, and one catalyst plate as the catalyst unit 51 is provided at the center of the reburn duct 31 in the longitudinal direction thereof. It may be arranged along the coating layer, and a coating layer made of any one of platinum, titanium, rhodium, palladium, cobalt, and manganese may be applied along the inner circumference of the reburn duct 31.
또한, 본 발명에 따른 연소 배가스의 재연소 장치(10)는 축열판(41) 영역에서 부분 정체된 연소 가스가 버너(71)로 재유입하지 않도록 축열판(41)으로 유동 안내하는 레지스터(61)를 더 포함한다.In addition, the reburn apparatus 10 of the combustion flue gas according to the present invention has a resistor 61 for guiding flow to the heat storage plate 41 so that the combustion gas partially stagnant in the heat storage plate 41 does not flow back into the burner 71. More).
레지스터(61)는 흡기 덕트(11) 및 배기 덕트(21)의 하부의 일측 가장자리로부터 연장되어 별도의 기구에 견고히 지지되는 브래킷(63)과, 브래킷(63)과 수직을 이루며 재연소 덕트(31)와 나란하게 절곡 연장된 연장부(65)와, 브래킷(63)과 연장부(65) 사이에 선회 유동공간을 형성하도록 연장부(65)로부터 재연소 덕트(31)의 하부를 향해 경사지게 절곡된 절곡부(67)를 포함한다.The resistor 61 extends from one side edges of the lower portions of the intake duct 11 and the exhaust duct 21 to be firmly supported by a separate mechanism, and is perpendicular to the bracket 63 and reburned duct 31. Bent inclined toward the lower portion of the reburn duct 31 from the extension 65 so as to form a turning flow space between the extension portion 65 and the bracket 63 and the extension 65. Bent portion 67 is included.
이로써, 레지스터(61)는 연소시 발생하는 고온의 가스로 인한 축열판(41)의 연소 가스통과공(47)에서 발생하는 열응력에 의해 연소 가스통과공(47)을 통과하지 못해 발생하는 일부 연소 가스를 선회시켜, 다시 축열판(41)의 연소 가스통과공(47)으로 유동시킨다. 이에, 역류된 연소 가스가 버너(71)로 유입되는 것을 방지하여, 버너(71)의 손상을 줄일 수 있게 된다.As a result, the resistor 61 may not be able to pass through the combustion gas passage hole 47 due to thermal stress generated in the combustion gas passage hole 47 of the heat storage plate 41 due to the hot gas generated during combustion. The combustion gas is rotated and flows again to the combustion gas passage hole 47 of the heat storage plate 41. Accordingly, the backflow of the combustion gas is prevented from flowing into the burner 71, thereby reducing damage of the burner 71.
이하에서는 도 5에 도시된 바와 같이, 본 발명에 따른 연소 배가스의 재연소 장치(10)를 일 실시예로서 커피 로스터 장치에 적용한 예에 대해 설명한다. 참고로, 도 5에는 연소 가스 및 연소 배가스의 흐름이 화살표로 도시되어 있다.Hereinafter, as shown in FIG. 5, an example in which the reburn apparatus 10 for combustion flue gas according to the present invention is applied to a coffee roaster apparatus as an embodiment will be described. For reference, in FIG. 5, the flows of the combustion gas and the combustion exhaust gas are shown by arrows.
도 5에 도시된 바와 같이, 버너(71)의 상방에는 본 발명에 따른 연소 배가스의 재연소 장치(10)가 배치되고, 연소 배가스의 재연소 장치(10)의 상방에는 가열부(81)로서 커피 원두를 로스팅하는 로스터가 배치되어 있다.As shown in FIG. 5, the reburn apparatus 10 of the combustion flue gas according to the present invention is disposed above the burner 71, and as the heating portion 81 above the reburn apparatus 10 of the combustion flue gas. There is a roaster for roasting coffee beans.
버너(71)로부터 연료를 공급하고, 동시에 버너 송풍기(75)로부터 연소용 공기를 공급한 상태에서 버너(71)를 점화시키면, 연소 가스가 발생하게 된다.When the fuel is supplied from the burner 71 and the burner 71 is ignited while the combustion air is supplied from the burner blower 75, combustion gas is generated.
버너(71)로부터 발생한 연소 가스는 본 발명에 따른 연소 배가스의 재연소 장치(10)를 거쳐 가열부(81)인 로스터로 유동하게 된다.The combustion gas generated from the burner 71 flows to the roaster which is the heating part 81 via the reburn apparatus 10 of the combustion flue gas which concerns on this invention.
이 때, 연소 배가스의 재연소 장치(10)의 축열판(41)은 연소 가스통과공(47)을 통과하는 연소 가스로부터 고온의 열을 흡수하며 축열하게 된다. 축열판(41)에 축적된 열은 재연소 덕트(31)로 전달되어 재연소 덕트(31)를 가열함과 동시에, 재연소 덕트(31)를 유동하는 연소 배가스를 가열한다. 또한, 축열판(41)은 고온의 연소 가스로부터 1200∼1300℃의 온도를 유지하면서 열을 축적하고 있으므로, 연소시 발생되는 화염과 불완전 가스를 산화시켜, 연소 가스통과공(47)을 통과하는 연소 가스를 2차 연소, 즉 초과 엔탈피 연소를 한다.At this time, the heat storage plate 41 of the re-combustion apparatus 10 of the combustion flue gas absorbs high temperature heat from the combustion gas passing through the combustion gas passage hole 47 and accumulates heat. The heat accumulated in the heat storage plate 41 is transferred to the reburn duct 31 to heat the reburn duct 31 and at the same time to heat the combustion exhaust gas flowing through the reburn duct 31. In addition, since the heat storage plate 41 accumulates heat while maintaining a temperature of 1200 to 1300 ° C. from a high temperature combustion gas, the heat storage plate 41 oxidizes the flame and incomplete gas generated during combustion, and passes through the combustion gas passage hole 47. The combustion gas undergoes secondary combustion, ie excess enthalpy combustion.
한편, 축열판(41)의 연소 가스통과공(47)에서 발생하는 열응력에 의해 연소 가스통과공(47)을 통과하지 못한 연소 가스는 레지스터(61)에 의해 선회 유동되어, 다시 연소 가스통과공(47)으로 유동하게 된다.On the other hand, the combustion gas which has not passed through the combustion gas passage hole 47 due to the thermal stress generated in the combustion gas passage hole 47 of the heat storage plate 41 is rotated by the resistor 61, and again passes through the combustion gas passage. It flows into the ball 47.
가열부(81)인 로스터로 유동된 연소 가스는 가열부(81)인 로스터 내의 커피 원두를 로스팅한 후, 배가스의 형태, 즉 연소 배가스로 제1 연결 덕트(85)를 거쳐 흡기 덕트(11)로 유입되어 재연소 덕트(31)를 통과하여, 배기 덕트(21)를 거쳐 제2 연결 덕트(91)를 통해 후속 공정 또는 외부로 배출된다.The combustion gas flowing into the roaster, which is the heating section 81, roasts the coffee beans in the roaster, which is the heating section 81, and then intakes the duct 11 through the first connecting duct 85 in the form of exhaust gas, that is, combustion exhaust gas. It is introduced into and passed through the reburn duct 31, and is discharged through the exhaust duct 21 through the second connecting duct 91 to the subsequent process or outside.
이 때, 재연소 덕트(31)의 내주에 배치된 촉매부(51)는 축열판(41)으로부터 재연소 덕트(31)를 거쳐 전달된 열에 의해 고온으로 가열되며, 이에 재연소 덕트(31)의 내주를 유동하는 연소 배가스는 촉매부(51)에 의해 3차 연소가 이루어진다. 즉, 연소 배가스에 함유된 일산화탄소, 기타 연소시 발생되는 미연소분, 로스팅시 발생한 커피 원두 껍질 및 유해 성분은 촉매부(51)에 의해 흡착 및 산화되어 재연소된다.At this time, the catalyst portion 51 disposed on the inner circumference of the reburn duct 31 is heated to a high temperature by the heat transferred from the heat storage plate 41 through the reburn duct 31, and thus the reburn duct 31 The combustion flue gas flowing in the inner circumference of the gas is subjected to tertiary combustion by the catalyst unit 51. That is, carbon monoxide contained in the combustion flue gas, other unburned powder generated during combustion, coffee beans shell and harmful components generated during roasting are adsorbed and oxidized by the catalyst unit 51 to be reburned.
또한, 가열부(81)로부터 배출되는 연소 배가스가 바로 외부로 배출되지 않고 재연소 덕트(31)에 의해 열을 회수하여 재사용하므로 에너지 절감을 도모하고, 연소 효율을 향상시킬 수 있게 된다.In addition, since the combustion flue gas discharged from the heating unit 81 is not immediately discharged to the outside, heat is recovered and reused by the reburn duct 31, thereby achieving energy saving and improving combustion efficiency.
이와 같이, 본 발명에 따르면, 가열부로 유동하는 연소 가스의 열을 축열판을 통해 축적하여, 축열판의 열을 가열부로부터 배출되는 연소 배가스가 유동하는 재연소 덕트에 전달하고, 재연소 덕트 내부에 연소 배가스를 산화시키며 재연소하는 촉매부를 마련함으로써, 연소 배가스에 함유된 대기오염 물질인 일산화탄소, 기타 연소시 발생되는 미연소분 및 유해 성분을 재연소시켜 연소 배가스에 함유된 미연소분 및 유해 성분을 저감시키며 연소 효율을 향상시킬 수 있게 된다. 또한, 연소 배가스의 열을 재사용하므로 에너지 절감을 도모할 수 있게 된다.As described above, according to the present invention, the heat of the combustion gas flowing to the heating part is accumulated through the heat storage plate, and the heat of the heat storage plate is transferred to the reburn duct through which the combustion flue gas discharged from the heating part flows, and the inside of the reburn duct By oxidizing the combustion flue gas in the catalyst section, the catalyst unit is oxidized to burn the carbon monoxide, which is an air pollutant contained in the combustion flue gas, and other unburned components and harmful components generated during combustion to reburn the unburned components and harmful components contained in the combustion flue gas. It can reduce and improve the combustion efficiency. In addition, the heat of the combustion flue gas can be reused, thereby enabling energy saving.
한편, 전술한 실시예에서는 본 발명의 연소 배가스의 재연소 장치가 커피 로스터 장치에 설치되어 사용하는 것을 설명하고 있지만 이에 한정되지 않으며, 본 발명에 따른 연소 배가스의 재연소 장치는 2차 연소를 하지 못하는 현존의 모든 설비(예: 가스 보일러, 경유 보일러, 원두커피 로스터, 식당용 불판, 가스 렌지, 오븐 렌지, 휴대용 가스렌지, 기타 버너 등)에 적용하여 사용할 수 있다.On the other hand, in the above-described embodiment, although the combustion apparatus for the combustion exhaust gas of the present invention has been described in the coffee roaster device is used, but not limited to this, the combustion apparatus of the combustion exhaust gas according to the present invention does not perform secondary combustion. It can be used for all existing installations that cannot be used (eg gas boilers, diesel boilers, coffee bean roasters, restaurant grills, gas stoves, oven stoves, portable stoves, etc.).
본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서, 그러한 수정 예 또는 변형 예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

Claims (6)

  1. 버너와, 상기 버너로부터 발생되는 연소 가스에 의해 가열 또는 열교환이 이루어지는 가열부 사이에 마련되어, 상기 가열부를 가열 또는 열교환한 후 배출되는 연소 배가스를 재연소하는 연소 배가스의 재연소 장치에 있어서,In the reburn apparatus of the combustion flue gas provided between a burner and the heating part which heats or heat-exchanges with the combustion gas which generate | occur | produces from the burner, and reburns the combustion flue gas discharged after heating or heat-exchanging the said heating part,
    상기 가열부로부터 배출된 연소 배가스가 흡입 및 배출되며, 상호 이격 배치되는 흡기 덕트 및 배기 덕트;An intake duct and an exhaust duct in which the combustion exhaust gas discharged from the heating unit is sucked and discharged and spaced apart from each other;
    상기 흡기 덕트와 상기 배기 덕트를 상호 연결하며, 상기 흡기 덕트로 흡입된 연소 배가스를 재연소하며 상기 배기 덕트로 안내하는 재연소 덕트;A reburn duct interconnecting said intake duct and said exhaust duct, reburning and directing combustion exhaust gas sucked into said intake duct to said exhaust duct;
    상기 버너로부터 발생된 연소 가스가 통과하도록 상기 흡기 덕트와 상기 배기 덕트 사이에 마련되어, 상기 연소 가스의 열을 축열하여 상기 재연소 덕트에 제공하는 축열판; 및A heat storage plate provided between the intake duct and the exhaust duct so that combustion gas generated from the burner passes, and accumulate heat of the combustion gas and provide it to the reburn duct; And
    상기 재연소 덕트의 내주에 마련되어, 상기 축열판으로부터 제공된 열에 의해 가열되어 상기 재연소 덕트를 통과하는 상기 연소 배가스를 산화시키며 재연소하는 촉매부를 포함하는, 연소 배가스의 재연소 장치.And a catalyst portion provided on an inner circumference of the reburn duct, which is heated by heat provided from the heat storage plate and oxidizes and reburns the combustion exhaust gas passing through the reburn duct.
  2. 제1항에 있어서,The method of claim 1,
    상기 흡기 덕트 및 상기 배기 덕트에 장착되어, 상기 축열판 영역에서 부분 정체된 상기 연소 가스가 상기 버너로 재유입하지 않도록 상기 축열판으로 유동 안내하는 레지스터를 더 포함하는, 연소 배가스의 재연소 장치.And a resistor mounted to the intake duct and the exhaust duct, the register guiding flow to the heat storage plate such that the combustion gas partially stagnant in the heat storage plate area does not flow back into the burner.
  3. 제1항에 있어서,The method of claim 1,
    상기 촉매부는 판 형상의 촉매판으로 이루어지며, 복수의 상기 촉매판이 상기 재연소 덕트의 내주에 격자형상으로 배치되는, 연소 배가스의 재연소 장치.The catalyst unit is composed of a plate-shaped catalyst plate, a plurality of the catalyst plate is disposed in a lattice shape on the inner circumference of the reburn duct, combustion apparatus for combustion exhaust gas.
  4. 제3항에 있어서,The method of claim 3,
    상기 촉매판은 백금, 티타늄, 로듐, 팔라듐, 코발트, 망간 중 어느 하나의 재질로 코팅되어 있는, 연소 배가스의 재연소 장치.The catalyst plate is coated with a material of any one of platinum, titanium, rhodium, palladium, cobalt, manganese, reburn apparatus for combustion exhaust gas.
  5. 제1항에 있어서,The method of claim 1,
    상기 축열판은,The heat storage plate,
    상기 흡기 덕트 및 배기 덕트에 평행하게 배치되는 가로 축열판; 및 A horizontal heat storage plate disposed in parallel with the intake duct and the exhaust duct; And
    상기 가로 축열판에 대해 수직하게 배치되는 세로 축열판을 포함하며,A vertical heat storage plate disposed perpendicular to the horizontal heat storage plate,
    상기 가로 축열판 및 상기 세로 축열판은 일정 간격으로 격자 형상으로 배치되는, 연소 배가스의 재연소 장치.The horizontal heat storage plate and the vertical heat storage plate is disposed in a grid shape at regular intervals, re-combustion apparatus for combustion exhaust gas.
  6. 제1항에 있어서,The method of claim 1,
    상기 재연소 덕트의 외주를 따라 유동하는 연소 가스와 상기 재연소 덕트의 내주를 따라 유동하는 연소 배가스는 직교류 유동(cross-flow)하는, 연소 배가스의 재연소 장치.Combustion gas flowing along the outer circumference of the reburn duct and the combustion exhaust gas flowing along the inner circumference of the reburn duct cross-flow cross-flow.
PCT/KR2014/007720 2013-09-26 2014-08-20 Apparatus for re-combusting combustion exhaust gas WO2015046755A1 (en)

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Publication number Priority date Publication date Assignee Title
JPH10192695A (en) * 1996-12-21 1998-07-28 Degussa Ag Reactor for performing endothermic catalytic reaction
KR20010056546A (en) * 1999-12-15 2001-07-04 손재익 A Small Condensing Gas Boiler for Emitting Low NOx by Exhaust Gas Recirculation and Method Thereof
JP2009172476A (en) * 2008-01-22 2009-08-06 Miura Co Ltd Cleaning apparatus and combustion apparatus
KR20100132473A (en) * 2010-11-26 2010-12-17 (주)한선 Combustion gas decrease and reburning device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10192695A (en) * 1996-12-21 1998-07-28 Degussa Ag Reactor for performing endothermic catalytic reaction
KR20010056546A (en) * 1999-12-15 2001-07-04 손재익 A Small Condensing Gas Boiler for Emitting Low NOx by Exhaust Gas Recirculation and Method Thereof
JP2009172476A (en) * 2008-01-22 2009-08-06 Miura Co Ltd Cleaning apparatus and combustion apparatus
KR20100132473A (en) * 2010-11-26 2010-12-17 (주)한선 Combustion gas decrease and reburning device

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