WO2013058498A2 - Exhaust reduction device for diesel generator - Google Patents

Exhaust reduction device for diesel generator Download PDF

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Publication number
WO2013058498A2
WO2013058498A2 PCT/KR2012/008263 KR2012008263W WO2013058498A2 WO 2013058498 A2 WO2013058498 A2 WO 2013058498A2 KR 2012008263 W KR2012008263 W KR 2012008263W WO 2013058498 A2 WO2013058498 A2 WO 2013058498A2
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WO
WIPO (PCT)
Prior art keywords
exhaust gas
particulate filter
diesel
diesel particulate
oxidation catalyst
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Application number
PCT/KR2012/008263
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French (fr)
Korean (ko)
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WO2013058498A3 (en
Inventor
박만호
이의성
배정석
Original Assignee
주식회사 알란텀
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Publication of WO2013058498A2 publication Critical patent/WO2013058498A2/en
Publication of WO2013058498A3 publication Critical patent/WO2013058498A3/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0217—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters the filtering elements having the form of hollow cylindrical bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/22—Metal foam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a smoke reduction device of a diesel generator, and more particularly to a smoke reduction device of a diesel generator using a resistance heating element.
  • Regeneration methods to remove the soot trapped in the filter to the initial state of the filter include a catalytic oxidation method, burner heating regeneration method, electric heater heating regeneration method.
  • the regeneration is smoothly performed when the section of the exhaust gas temperature is 280 ° C. or more at 10% or more, but in the case of a small generator or an emergency generator, the high temperature section is often less than 10%.
  • a device to oxidize is needed.
  • KR 2005-0070611 discloses a DOC / DPF system for a diesel engine in which a diesel particulate catalyst for purification and a diesel particulate filter exclusively for regenerating particulate matter are applied. It only discloses post fuel injection operation.
  • An object of the present invention is to provide a smoke reduction device and a smoke reduction method for a diesel generator, which perform regeneration by raising the temperature of the gas.
  • a smoke reduction device is an exhaust gas conduit for inducing exhaust gas discharged from a diesel generator, and is formed to face the exhaust gas conduit and is formed of a metal oxide hollow catalyst.
  • a portion, a resistance heating element formed in the inner diameter of the oxidation catalyst portion, a hollow diesel particulate filter portion made of a metal foam surrounds the oxidation catalyst portion spaced in the radial direction, and the resistance heating element is passed through the oxidation catalyst portion and diesel particulate And a flange that is joined to seal one end of the filter portion.
  • the oxidation catalyst unit and the diesel particulate filter is characterized in that formed by rolling the open porous metal foam sheet to be a hollow cylindrical shape.
  • the oxidation catalyst unit is characterized in that it comprises at least one material selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, tungsten, chromium, manganese, iron, cobalt, copper, zinc.
  • the metal foam constituting the oxidation catalyst unit and the diesel particulate filter unit is characterized in that consisting of at least one selected from Ni-based metal foam, Fe-based metal foam, FeNiCrAl-based metal foam and metal mash (metal mash).
  • the resistance heating element is a coil wound around at least one material selected from Fe-Cr-based, Fe-Cr-Al-based, Ni-Cr-based, molybdenum, tungsten, silicon carbide, molybdenum silicide, lanthanum chromite, carbon, and zirconia. It is characterized in that formed.
  • the other end of the oxidation catalyst portion and one end of the diesel particulate filter portion are coupled to a plate formed with a hole so that the exhaust gas flows from the exhaust gas conduit 10 to the inner diameter of the oxidation catalyst portion, and the radius of the plate is the diesel particulate filter portion. It is characterized in that it is larger than the radius.
  • the particulate matter reduction apparatus for the diesel generator further includes a housing surrounding the diesel particulate filter and joined to the plate and the exhaust gas conduit 10.
  • the housing is a smoke reduction device, characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter.
  • the smoke reduction device for a diesel generator includes an exhaust gas conduit 10 for inducing exhaust gas discharged from a diesel generator and formed to face the exhaust gas conduit 10 so that the exhaust gas passes. And an oxidation catalyst part made of metal foam, spaced apart from the oxidation catalyst part, and a hollow diesel particulate filter part made of metal foam, a resistance heating element formed in an inner diameter of the diesel particulate filter part, and the resistance heating element pass through the diesel. And a flange coupled to seal one end of the particulate filter part, and a plate in which the oxidation catalyst part and the diesel particulate filter part are coupled and each having a radius larger than that of the diesel particulate filter part.
  • the particulate matter reduction apparatus for the diesel generator further includes a housing surrounding the diesel particulate filter and joined to the plate and the exhaust gas conduit 10.
  • the housing is characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter unit is formed.
  • a method for reducing smoke in a diesel generator comprising: providing an exhaust gas discharged from a diesel generator, a resistance heating element formed inside the exhaust gas, and a hollow oxidation catalyst part formed of metal foam; Passing the exhaust gas through a hollow diesel particulate filter formed of a metal foam radially spaced apart from the oxidation catalyst portion, and detecting a pressure difference between the front end and the rear end of the diesel particulate filter; And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
  • the oxygen catalyst portion and the diesel particulate filter portion is formed by rolling a metal foam sheet into a hollow cylindrical shape, and then clogging one end.
  • the power applied to the resistance heating element is characterized in that it is made through a control unit using the detected pressure difference as an input signal.
  • the method for reducing smoke of the diesel generator is characterized in that the load of the diesel generator is increased by applying power to the resistance heating element, thereby increasing the temperature of the exhaust gas discharged from the diesel generator.
  • a method of reducing smoke in a diesel generator comprising: providing an exhaust gas discharged from a diesel generator, passing the exhaust gas through an oxidation catalyst part made of metal foam, and passing the exhaust gas to the exhaust gas. It is formed to be spaced apart from the oxidation catalyst portion, a resistance heating element is formed in the inner diameter and passing through the diesel diesel particulate filter made of a metal foam, detecting the pressure difference between the front end and the rear end of the diesel particulate filter; And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
  • the diesel particulate filter is rolled up a metal foam sheet to form a hollow cylindrical shape, characterized in that the one end is blocked.
  • the power applied to the resistance heating element is characterized in that made through the control unit using the detected pressure difference as an input signal.
  • the method for reducing smoke of the diesel generator is characterized in that the load of the diesel generator is increased by applying power to the resistance heating element, thereby increasing the temperature of the exhaust gas discharged from the diesel generator.
  • the regeneration of the soot reduction device increases the load of the engine or the generator when electric power is supplied to the electric heating wire, thereby increasing the temperature of the exhaust gas discharged from the engine and applying the electric heating wire.
  • the exhaust gas is heated by the electric power, and the regeneration of the smoke reduction device can be effectively achieved.
  • FIG. 1 is an exploded cross-sectional view of a smoke reduction device for a diesel generator according to an embodiment of the present invention.
  • FIG. 2 is an exploded cross-sectional view of a particulate matter reduction apparatus for a diesel generator according to another embodiment of the present invention.
  • FIG 3 is a graph illustrating changes in exhaust gas temperature and pressure at the front end of a filter of a diesel generator according to a load of the generator.
  • FIG 4 is a graph showing the internal temperature of the filter and the pressure change of the filter front end during regeneration of the diesel particulate smoke reduction device according to the present invention.
  • FIG. 1 is an exploded cross-sectional view of an oxidation catalyst unit and a diesel particulate filter unit to which a metal foam according to the present invention is applied, and a particulate matter reduction device for a diesel generator having a resistance heating element in the oxidation catalyst unit.
  • the exhaust gas reducing device (100) for a diesel generator is formed to face the exhaust gas conduit (10) and the exhaust gas conduit (10) for inducing exhaust gas discharged from the diesel generator and is formed of metal foam.
  • Hollow oxidation catalyst portion 20 made of a hollow, resistance heating element 30 formed in the inner diameter of the oxidation catalyst portion 20, the hollow space made of a metal foam surrounding the oxidation catalyst portion 20 spaced apart in the radial direction Diesel particulate filter portion 40 of the type, and the flange 50 is coupled to seal one end of the oxidation catalyst portion 20 and the diesel particulate filter portion 40.
  • the diesel generator refers to a power generator used for a small generator mounted on a vehicle, an emergency generator in a building, and the like.
  • the oxidation catalyst unit 20 and the diesel particulate filter unit 40 are formed by winding an open porous metal foam sheet to be a hollow cylinder.
  • the metal foam is a liquid atom from the metal powder by applying a binder and an alloying powder to a nickel-based basic foam sheet, and then removing the binder through heat treatment and sintering. May be diffused into the strut of the basic foam sheet to form a metal alloy of a uniform alloy.
  • the material of the metal foam constituting the oxidation catalyst unit 20 and the diesel particulate filter unit 40 is nickel (Ni) -based metal foam, iron (Fe) -based metal foam, iron-nickel-chromium-aluminum It may be formed of a material selected from a (FeNiCrAl) -based metal foam and metal mash.
  • the particulate matter contained in the exhaust gas can be adsorbed onto the surface of the cell structure while the exhaust gas passes through the metal foam of the fibrous structure. Particulate matter can be filtered.
  • the oxidation catalyst unit 20 is a carbon dioxide by reacting a soluble organic material (Soluble Organic Fraction) among the carbon monoxide (C0), hydrocarbons (HC) and particulate matter which are harmful substances contained in the exhaust gas with a catalyst (CO2), to purify with water (H2O).
  • a soluble organic material Soluble Organic Fraction
  • CO2 catalyst
  • the oxidation catalyst unit 20 includes hydrocarbons (HC) as water (H20) and carbon dioxide (CO2), carbon monoxide (CO) as carbon dioxide (CO2), and nitrogen monoxide (NO) as nitrogen (N2). It converts to nitrogen dioxide (NO 2) and serves to lower the combustion temperature of particulate matter (PM) accumulated in the diesel particulate filter unit 40 (DPF) to be described below.
  • the oxidation catalyst unit 20 may be formed in a state in which the metal foam sheet is rolled into a hollow cylindrical shape after coating or depositing a catalyst material on the metal foam sheet.
  • the oxidation catalyst unit 20 may be formed by applying or depositing a catalyst material on the surface of the hollow cylindrical metal foam.
  • the catalyst material used in the oxidation catalyst unit 20 may be at least one selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, tungsten, chromium, manganese, iron, cobalt, copper, and zinc.
  • the resistance heating element 30 may be formed of a conductive wire of at least one selected from Fe-Cr, Fe-Cr-Al, Ni-Cr, molybdenum, tungsten, silicon carbide, molybdenum silicide, lanthanum chromite, carbon, and zirconia. Can be.
  • the resistance heating element 30 may be formed by winding a coil in an inner diameter of the oxidation catalyst unit 20.
  • the other end of the oxidation catalyst unit 20 and the other end of the diesel particulate filter 40 is formed with a hole so that the exhaust gas flows from the exhaust gas conduit 10 to the inner diameter of the oxidation catalyst unit 20 Coupled to 60, the radius of the plate 60 is characterized in that larger than the radius of the diesel particulate filter 40.
  • Diesel Particulate Filter serves to reduce the particulate matter of the final exhaust gas by accumulating particulate matter discharged from a diesel engine or a diesel generator in the filter.
  • the diesel particulate filter unit reacts and removes particulate matter such as soot accumulated in order to maintain particulate trapping efficiency with oxygen, and burning the particulate matter accumulated in the diesel particulate filter is called regeneration.
  • the radius of the plate 60 is larger than the radius of the diesel particulate filter 40 so that the diesel particulate filter portion 40 when the plate 60 and the housing 70 are coupled as described below.
  • a space through which exhaust gas can pass may be formed between the housing 70 and the housing 70.
  • the particulate matter reduction apparatus 100 for the diesel generator may further include a housing 70 surrounding the diesel particulate filter unit 40 and bonded to the plate 60 and the exhaust gas conduit 10. By introducing the housing 70, a part of the exhaust gas conduit 10, the oxidation catalyst unit 20, the diesel particulate filter unit 40, and the resistance heating element 30 may be integrally embedded in the housing 70. .
  • the housing 70 is characterized in that the exhaust gas discharge port 80 for discharging the exhaust gas passing through the diesel particulate filter 40 is formed.
  • the exhaust gas discharged from the diesel generator moves to the inner diameter of the oxidation catalyst unit 20 through the exhaust gas conduit 10 and then passes through the radial direction of the diesel particulate filter unit 40 via the radial direction of the oxidation catalyst unit 20. After passing through, the gas is discharged to the outside through the exhaust gas outlet 80.
  • the diesel generator when the resistance heating element 30 is introduced into the oxidation catalyst unit 20, and a specific time after the operation of the generator or a specific back pressure is applied to the smoke reduction device 100 connected to the generator, the diesel generator The load of the diesel generator is increased by drawing electric power into the resistance heating element 30 from the fuel cell, and as a result, the temperature of the gas discharged from the diesel generator is increased, thereby allowing the exhaust gas to pass through the oxidation catalyst portion, and thus 2NO 2 + C ⁇ 2NO.
  • the filter can be regenerated by promoting the reaction of + CO 2 .
  • the temperature of the exhaust gas may be further increased by the heat of the heat wire into which power is drawn.
  • FIG. 2 is a view showing a soot reduction apparatus 100 for a diesel generator according to another embodiment of the present invention.
  • the resistance heating element 30 has an inner diameter. It passes through the hollow diesel particulate filter 40 formed.
  • a diesel particulate smoke reduction device includes an exhaust gas conduit (10) for inducing exhaust gas discharged from a diesel generator, and the exhaust gas conduit (10) to allow the exhaust gas to pass. It is formed to face the oxidation catalyst portion 20 made of metal foam, spaced apart from the oxidation catalyst portion 20, the hollow diesel particulate filter portion 40 made of a metal foam, the diesel particulate filter portion 40 Resistance heating element 30 formed in the inner diameter of the), the resistance heating element 30 passes through and the flange 50 is coupled to seal one end of the diesel particulate filter 40, and the oxidation catalyst unit 20 and Combining the diesel particulate filter portion 40 and has a radius larger than the radius of the diesel particulate filter portion 40 includes a plate formed with a hole.
  • the particulate matter reduction apparatus 100 for the diesel generator further includes a housing 70 surrounding the diesel particulate filter unit 40 and bonded to the plate 60 and the exhaust gas conduit 10.
  • the housing 70 may be formed with an exhaust gas discharge port 80 for discharging the exhaust gas passing through the diesel particulate filter 40.
  • the diesel particulate smoke reduction device 100 may further include a differential pressure gauge (not shown) for detecting the pressure difference between the front end and the rear end of the diesel particulate filter 40.
  • particulate matter such as soot in the exhaust gas accumulates in the filter, and the exhaust gas flow is not smooth due to accumulation of particulate matter.
  • a pressure difference may occur at the rear stage.
  • a differential pressure gauge (not shown) at the front and rear of the diesel particulate filter unit to detect the pressure difference between both ends, it is possible to know the regeneration time for removing particulate matter accumulated in the diesel particulate filter unit.
  • the smoke reduction device for diesel generator 100 further includes a control unit (not shown) for receiving a pressure difference detected by the differential pressure gauge (not shown) as an input signal and applying power to the resistance heating element 30. Can be.
  • the controller receives the pressure difference between the front and rear ends of the diesel particulate filter detected through the differential pressure gauge (not shown) as an input signal and exceeds the predetermined reference value from the diesel generator. When the power is applied to the power supply and the pressure difference is less than the predetermined reference value, the application of the power may be stopped.
  • the preset reference value may be 220 mbar to 280 mbar.
  • the application of power to the resistance heating element 30 may be made even when the engine is driven for 4 hours or more from the time of regenerating the diesel particulate filter.
  • the resistance heating element 30 is introduced into the oxidation catalyst unit 20 inner diameter so that a specific back pressure is applied to the smoke reduction device 100 connected to the generator after a specific time after the generator is started.
  • the load of the diesel generator is increased by drawing power into the resistance heating element 30 from the diesel generator, and as a result, the exhaust gas may be regenerated by increasing the temperature of the gas discharged from the diesel generator.
  • the temperature of the exhaust gas may be further increased by the heat of the heat wire into which power is drawn.
  • a method for reducing smoke in a diesel generator comprising: providing an exhaust gas discharged from a diesel generator, a resistance heating element 30 is formed inside the exhaust gas, and a hollow oxide made of metal foam Passing through the catalyst unit 20, Passing the exhaust gas through the hollow diesel particulate filter 40 formed of a metal foam formed radially spaced apart from the oxidation catalyst unit 20, the; Detecting a pressure difference between the front end and the rear end of the diesel particulate filter unit 40, and applying power to the resistance heating element 30 when the detected pressure difference is equal to or greater than a reference value.
  • the oxygen catalyst unit and the diesel particulate filter unit 40 is rolled up a metal foam sheet to form a hollow cylindrical shape, characterized in that the one end is blocked.
  • the power applied to the resistance heating element 30 may be made through a controller using the detected pressure difference as an input signal.
  • a method for reducing smoke in a diesel generator includes providing exhaust gas discharged from a diesel generator, passing the exhaust gas through an oxidation catalyst unit 20 made of metal foam, and exhaust gas. Is formed spaced apart from the oxidation catalyst unit 20, the resistance heating element 30 is formed in the inner diameter and passed through the hollow diesel particulate filter portion 40 made of a metal foam, the diesel particulate filter portion ( Detecting a pressure difference between the front end and the rear end of step 40) and applying power to the resistance heating element 30 when the detected pressure difference is equal to or greater than a reference value.
  • the power applied to the resistance heating element 30 may be made through the controller using the detected pressure difference as an input signal.
  • the regeneration of the exhaust gas is additionally promoted by the heat of the resistance heating element formed in the oxidation catalyst part.
  • Figure 3 is a value for the exhaust gas temperature change according to the load (load) of the small generator can be seen that the exhaust temperature reaches a regeneration temperature at 300 °C at about 60% load. That is, in the case of forced regeneration, when a power of 3 kW is introduced into the resistance heating element 30, the engine exhaust gas temperature reaches 300 ° C., thereby allowing regeneration, and the resistance heating element 30 mounted inside the filter is heated. Can increase the regeneration efficiency.
  • FIG. 4 is a graph showing that the pressure of the front end of the filter is restored to the initial state during the forced regeneration by applying the present invention was regenerated.
  • the load of the engine is increased by applying power to the resistance heating element when regenerating the filter of the smoke reduction device of the diesel generator, thereby increasing the temperature of the exhaust gas discharged from the engine as well as the resistance heating element.
  • heating the exhaust gas via the resistance heating element is heated to increase the high temperature section of the exhaust gas to increase the regeneration efficiency of the filter.
  • the present invention is to insert the heater into the filter of the smoke reduction device to oxidize the exhaust gas by increasing the temperature of the exhaust gas discharged from the generator as the resistance heating element heat and the load of the generator increases the smoke accumulated on the filter surface. In this manner, the soot and the like collected in the filter can be oxidized within 10 minutes to restore the filter to its original state.
  • the diesel generator according to the present invention is characterized in that it is applied to an apparatus and a method for reducing soot in an emergency diesel generator that is operated in an emergency such as the power supplied to a building is cut off.

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Abstract

Disclosed is an exhaust reduction device for a diesel generator, to which a metal foam and a resistance heating element. The exhaust reduction device for the diesel generator, according to the present invention, comprises: an exhaust gas pipe for guiding exhaust gas that is discharged from the diesel generator; an oxidation catalyst portion which is formed opposite the exhaust gas pipe and has a hollow shape comprised of the metal foam; the resistance element which is formed on an inner circumference of the oxidized catalyst portion; a diesel fine particle filter portion which encases the oxidized catalyst portion in a radial direction with a distance therebetween and has a hollow shape comprised of the metal foam; and a flange, though which the resistance heating element penetrates, and which is coupled to seal one end of the oxidized catalyst portion and the diesel fine particle filter portion.

Description

디젤 발전기용 매연저감장치Soot Reduction Device for Diesel Generator
본 발명은 디젤 발전기의 매연저감장치에 관한 것으로, 보다 상세하게는 저항 발열체를 이용한 디젤 발전기의 매연저감장치에 관한 것이다.The present invention relates to a smoke reduction device of a diesel generator, and more particularly to a smoke reduction device of a diesel generator using a resistance heating element.
식료품 운송 차량에 장착된 경유 연료를 이용하는 소형 발전기 혹은 빌딩 등의 건물 비상용 발전기에서 배출되는 매연을 효율적으로 감소시키기 위한 방안으로 매연저감장치 부착이 늘어나고 있다.In order to efficiently reduce soot emitted from a small generator using diesel fuel mounted on a food transport vehicle or a building emergency generator such as a building, the attachment of a smoke reduction device is increasing.
필터에 포집된 매연을 제거하여 필터를 초기 상태로 만드는 재생방법으로는 촉매산화방식, 버너가열 재생방식, 전기히터가열 재생방식 등이 있다. 여기서, 촉매산화 방식의 경우, 배기가스 온도가 280℃ 이상되는 구간이 10% 이상이 되어야 재생이 원활하게 이루어지나 소형 발전기 또는 비상용 발전기의 경우 고온구간이 10% 미만인 경우가 많아 포집된 매연을 강제적으로 산화시켜주는 장치가 필요하게 된다.Regeneration methods to remove the soot trapped in the filter to the initial state of the filter include a catalytic oxidation method, burner heating regeneration method, electric heater heating regeneration method. Here, in the case of catalytic oxidation, the regeneration is smoothly performed when the section of the exhaust gas temperature is 280 ° C. or more at 10% or more, but in the case of a small generator or an emergency generator, the high temperature section is often less than 10%. A device to oxidize is needed.
종래 기술(KR 2005-0070611)의 경우, 정화용 디젤산화촉매와 입자상 물질의 재생기능만을 담당하는 디젤 입자상물질 필터를 병행 적용한 디젤엔진용 DOC/DPF 시스템을 개시하고 있으나, 필터의 재생을 위해서 엔진의 연료후분사 작동에 관한 내용만을 개시하고 있다.The prior art (KR 2005-0070611) discloses a DOC / DPF system for a diesel engine in which a diesel particulate catalyst for purification and a diesel particulate filter exclusively for regenerating particulate matter are applied. It only discloses post fuel injection operation.
본 발명에서는 상기 문제를 해결하기 위하여 금속폼으로 이루어진 매연저감장치에 전기 열선을 도입하여 특정시간 또는 특정 배압에 도달한 경우 열선에 전기를 인입함으로써 발전기의 부하를 증대시키고 그 결과 발전기에서 배출되는 배기가스의 온도를 상승시킴으로써 재생을 실시하는 디젤 발전기용 매연저감장치 및 매연저감방법을 제공하는 것을 목적으로 한다. In the present invention, in order to solve the above problems by introducing an electric heating wire to the smoke reduction device made of a metal foam to reach a specific time or a specific back pressure by introducing electricity into the heating wire to increase the load of the generator and as a result exhaust from the generator An object of the present invention is to provide a smoke reduction device and a smoke reduction method for a diesel generator, which perform regeneration by raising the temperature of the gas.
상기 목적을 달성하기 위한 본 발명의 바람직한 실시예에 의한 매연저감장치는 디젤 발전기에서 배출되는 배기가스를 유도하는 배기가스 도관, 상기 배기가스 도관과 대향하여 형성되며 금속폼으로 이루어진 중공형태의 산화 촉매부, 상기 산화 촉매부의 내경에 형성된 저항 발열체, 상기 산화 촉매부를 반경방향으로 이격을 두고 둘러싸며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부, 및 상기 저항 발열체가 통과하며 상기 산화 촉매부 및 디젤미립자 필터부의 일단을 실링시키기 위해 결합되는 플랜지를 포함한다.In order to achieve the above object, a smoke reduction device according to a preferred embodiment of the present invention is an exhaust gas conduit for inducing exhaust gas discharged from a diesel generator, and is formed to face the exhaust gas conduit and is formed of a metal oxide hollow catalyst. A portion, a resistance heating element formed in the inner diameter of the oxidation catalyst portion, a hollow diesel particulate filter portion made of a metal foam surrounds the oxidation catalyst portion spaced in the radial direction, and the resistance heating element is passed through the oxidation catalyst portion and diesel particulate And a flange that is joined to seal one end of the filter portion.
상기 산화 촉매부 및 디젤미립자 필터부는 중공의 원통형상이 되도록 개방 다공성 금속폼 시트를 말아서 형성된 것을 특징으로 한다.The oxidation catalyst unit and the diesel particulate filter is characterized in that formed by rolling the open porous metal foam sheet to be a hollow cylindrical shape.
상기 산화 촉매부는 백금, 팔라듐, 로듐, 이리듐, 루테늄, 텅스텐, 크롬, 망간, 철, 코발트, 구리, 아연을 포함하는 그룹으로부터 선택된 적어도 하나 이상의 물질이 포함된 것을 특징으로 한다.The oxidation catalyst unit is characterized in that it comprises at least one material selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, tungsten, chromium, manganese, iron, cobalt, copper, zinc.
상기 산화 촉매부 및 디젤미립자 필터부를 구성하는 금속폼은 Ni계 금속폼, Fe계 금속폼, FeNiCrAl계 금속폼 및 금속 매쉬(metal mash) 중 선택된 적어도 하나로 이루어진 것을 특징으로 한다.The metal foam constituting the oxidation catalyst unit and the diesel particulate filter unit is characterized in that consisting of at least one selected from Ni-based metal foam, Fe-based metal foam, FeNiCrAl-based metal foam and metal mash (metal mash).
상기 저항 발열체는 Fe-Cr계, Fe-Cr-Al계, Ni-Cr계, 몰리브덴, 텅스텐, 탄화규소, 몰리브덴 실리사이드, 란탄 크로마이트, 탄소, 지르코니아 중 적어도 하나 선택된 재질의 도선을 코일형태로 감아서 형성된 것을 특징으로 한다.The resistance heating element is a coil wound around at least one material selected from Fe-Cr-based, Fe-Cr-Al-based, Ni-Cr-based, molybdenum, tungsten, silicon carbide, molybdenum silicide, lanthanum chromite, carbon, and zirconia. It is characterized in that formed.
상기 산화 촉매부의 타단 및 디젤미립자 필터부의 일단은 상기 배기가스가 상기 배기가스 도관(10)으로부터 상기 산화 촉매부의 내경으로 흐르도록 홀이 형성된 플레이트로 결합되며, 상기 플레이트의 반경은 상기 디젤미립자 필터부의 반경보다 큰 것을 특징으로 한다.The other end of the oxidation catalyst portion and one end of the diesel particulate filter portion are coupled to a plate formed with a hole so that the exhaust gas flows from the exhaust gas conduit 10 to the inner diameter of the oxidation catalyst portion, and the radius of the plate is the diesel particulate filter portion. It is characterized in that it is larger than the radius.
상기 디젤 발전기용 매연저감장치는 상기 디젤미립자 필터부를 둘러싸며 상기 플레이트 및 배기가스 도관(10)과 접합되는 하우징을 더 포함한다.The particulate matter reduction apparatus for the diesel generator further includes a housing surrounding the diesel particulate filter and joined to the plate and the exhaust gas conduit 10.
또한, 상기 하우징은 상기 디젤미립자 필터부를 통과한 배기가스를 배출하기 위한 배기가스 배출구가 형성된 것을 특징으로 하는 매연저감장치. In addition, the housing is a smoke reduction device, characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter.
본 발명의 바람직한 다른 실시예에 의한 디젤 발전기용 매연저감장치는 디젤 발전기에서 배출되는 배기가스를 유도하는 배기가스 도관(10), 상기 배기가스가 통과하도록 상기 배기가스 도관(10)에 대향하여 형성되며 금속폼으로 이루어진 산화 촉매부, 상기 산화 촉매부와 이격을 두고 형성되며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부, 상기 디젤미립자 필터부의 내경에 형성된 저항 발열체, 상기 저항 발열체가 통과하며 상기 디젤미립자 필터부의 일단을 실링시키기 위해 결합되는 플랜지, 및 상기 산화 촉매부와 디젤미립자 필터부를 결합시키며 상기 디젤미립자 필터부의 반경보다 큰 반경을 가지며 홀이 형성된 플레이트를 포함한다. The smoke reduction device for a diesel generator according to another preferred embodiment of the present invention includes an exhaust gas conduit 10 for inducing exhaust gas discharged from a diesel generator and formed to face the exhaust gas conduit 10 so that the exhaust gas passes. And an oxidation catalyst part made of metal foam, spaced apart from the oxidation catalyst part, and a hollow diesel particulate filter part made of metal foam, a resistance heating element formed in an inner diameter of the diesel particulate filter part, and the resistance heating element pass through the diesel. And a flange coupled to seal one end of the particulate filter part, and a plate in which the oxidation catalyst part and the diesel particulate filter part are coupled and each having a radius larger than that of the diesel particulate filter part.
상기 디젤 발전기용 매연저감장치는 상기 디젤미립자 필터부를 둘러싸며 상기 플레이트 및 배기가스 도관(10)과 접합되는 하우징을 더 포함한다.The particulate matter reduction apparatus for the diesel generator further includes a housing surrounding the diesel particulate filter and joined to the plate and the exhaust gas conduit 10.
상기 하우징은 상기 디젤미립자 필터부를 통과한 배기가스를 배출하기 위한 배기가스 배출구가 형성된 것을 특징으로 한다.The housing is characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter unit is formed.
본 발명의 바람직한 다른 실시예에 의한 디젤 발전기의 매연저감방법은 디젤 발전기에서 배출되는 배기가스를 제공하는 단계, 상기 배기가스를 내부에 저항 발열체가 형성되며 금속폼으로 이루어진 중공형상의 산화 촉매부에 통과시키는 단계, 상기 배기가스를 상기 산화 촉매부와 반경방향으로 이격을 두고 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부에 통과시키는 단계, 상기 디젤미립자 필터부의 전단과 후단의 압력차를 검출하는 단계, 및 상기 검출된 압력차가 기준치 이상인 경우 상기 저항 발열체에 전원을 인가시키는 단계를 포함한다.According to another exemplary embodiment of the present invention, there is provided a method for reducing smoke in a diesel generator, the method comprising: providing an exhaust gas discharged from a diesel generator, a resistance heating element formed inside the exhaust gas, and a hollow oxidation catalyst part formed of metal foam; Passing the exhaust gas through a hollow diesel particulate filter formed of a metal foam radially spaced apart from the oxidation catalyst portion, and detecting a pressure difference between the front end and the rear end of the diesel particulate filter; And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
상기 산소 촉매부 및 디젤미립자 필터부는 금속폼 시트를 말아 중공의 원통형상으로 형성한 후 일단을 막은 형태인 것을 특징으로 한다.The oxygen catalyst portion and the diesel particulate filter portion is formed by rolling a metal foam sheet into a hollow cylindrical shape, and then clogging one end.
상기 저항 발열체에 인가되는 전원은 검출된 상기 압력차를 입력신호로 하여 제어부를 통해 이루어지는 것을 특징으로 한다.The power applied to the resistance heating element is characterized in that it is made through a control unit using the detected pressure difference as an input signal.
상기 디젤 발전기의 매연저감방법은 상기 저항 발열체에 전원을 인가함에 의해 상기 디젤 발전기의 부하가 증가하며 이에 의해 상기 디젤 발전기에서 배출되는 배기가스의 온도가 상승하는 것을 특징으로 한다.The method for reducing smoke of the diesel generator is characterized in that the load of the diesel generator is increased by applying power to the resistance heating element, thereby increasing the temperature of the exhaust gas discharged from the diesel generator.
본 발명의 바람직한 또 다른 실시예에 의한 디젤 발전기의 매연저감방법은 디젤 발전기에서 배출되는 배기가스를 제공하는 단계, 상기 배기가스를 금속폼으로 이루어진 산화 촉매부에 통과시키는 단계, 상기 배기가스를 상기 산화 촉매부와 이격을 두고 형성되며, 내경에 저항 발열체가 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부에 통과시키는 단계, 상기 디젤미립자 필터부의 전단과 후단의 압력차를 검출하는 단계, 및 검출된 상기 압력차가 기준치 이상인 경우 상기 저항 발열체에 전원을 인가시키는 단계를 포함한다.According to still another aspect of the present invention, there is provided a method of reducing smoke in a diesel generator, the method comprising: providing an exhaust gas discharged from a diesel generator, passing the exhaust gas through an oxidation catalyst part made of metal foam, and passing the exhaust gas to the exhaust gas. It is formed to be spaced apart from the oxidation catalyst portion, a resistance heating element is formed in the inner diameter and passing through the diesel diesel particulate filter made of a metal foam, detecting the pressure difference between the front end and the rear end of the diesel particulate filter; And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
상기 디젤미립자 필터부는 금속폼 시트를 말아 중공의 원통형상으로 형성한 후 일단을 막은 형태인 것을 특징으로 한다.The diesel particulate filter is rolled up a metal foam sheet to form a hollow cylindrical shape, characterized in that the one end is blocked.
상기 저항 발열체에 인가되는 전원은 상기 검출된 압력차를 입력신호로 하여 제어부를 통해 이루어지는 것을 특징으로 한다.The power applied to the resistance heating element is characterized in that made through the control unit using the detected pressure difference as an input signal.
상기 디젤 발전기의 매연저감방법은 상기 저항 발열체에 전원을 인가함에 의해 상기 디젤 발전기의 부하가 증가하며 이에 의해 상기 디젤 발전기에서 배출되는 배기가스의 온도가 상승하는 것을 특징으로 한다.The method for reducing smoke of the diesel generator is characterized in that the load of the diesel generator is increased by applying power to the resistance heating element, thereby increasing the temperature of the exhaust gas discharged from the diesel generator.
본 발명에 의하면, 매연저감장치의 재생은 전기 열선에 전력을 투입할 경우, 엔진 또는 발전기의 부하가 증가하게 되고, 이에 의해 엔진에서 배출되는 배기가스의 온도가 증가할 뿐만 아니라 전기 열선에 인가된 전력에 의해 배기가스가 가열됨으로써 매연저감장치의 재생을 효과적으로 달성할 수 있다. According to the present invention, the regeneration of the soot reduction device increases the load of the engine or the generator when electric power is supplied to the electric heating wire, thereby increasing the temperature of the exhaust gas discharged from the engine and applying the electric heating wire. The exhaust gas is heated by the electric power, and the regeneration of the smoke reduction device can be effectively achieved.
도 1은 본 발명에 일 실시예에 의한 디젤 발전기용 매연저감장치의 분해 단면도이다.1 is an exploded cross-sectional view of a smoke reduction device for a diesel generator according to an embodiment of the present invention.
도 2는 본 발명의 다른 실시예에 의한 디젤 발전기용 매연저감장치의 분해 단면도이다.2 is an exploded cross-sectional view of a particulate matter reduction apparatus for a diesel generator according to another embodiment of the present invention.
도 3은 발전기의 부하(load)에 따른 디젤 발전기의 배기가스 온도 및 필터 전단의 압력 변화를 도시한 그래프이다.3 is a graph illustrating changes in exhaust gas temperature and pressure at the front end of a filter of a diesel generator according to a load of the generator.
도 4는 본 발명에 의한 디젤 발전기용 매연저감장치의 재생시 필터 내부 온도 및 필터 전단의 압력 변화를 도시한 그래프이다.4 is a graph showing the internal temperature of the filter and the pressure change of the filter front end during regeneration of the diesel particulate smoke reduction device according to the present invention.
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나, 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 수 있으며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하고, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 명세서 전체에 걸쳐 동일 참조 부호는 동일 구성요소를 지칭한다.Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and are common in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims. Like reference numerals refer to like elements throughout.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예에 의한 디젤 발전기용 매연저감장치에 대하여 설명하기로 한다. 참고로 본 발명을 설명함에 있어서 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.Hereinafter, with reference to the accompanying drawings it will be described with respect to the smoke reduction device for a diesel generator according to a preferred embodiment of the present invention. For reference, in the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
도 1은 본 발명에 의한 금속폼을 적용한 산화 촉매부 및 디젤미립자 필터부와 산화 촉매부 내부에 저항 발열체를 구비한 디젤 발전기용 매연저감장치의 분해 단면도이다.1 is an exploded cross-sectional view of an oxidation catalyst unit and a diesel particulate filter unit to which a metal foam according to the present invention is applied, and a particulate matter reduction device for a diesel generator having a resistance heating element in the oxidation catalyst unit.
본 발명의 바람직한 일 실시예에 의한 디젤 발전기용 매연저감장치(100)는 디젤 발전기에서 배출되는 배기가스를 유도하는 배기가스 도관(10), 상기 배기가스 도관(10)과 대향하여 형성되며 금속폼으로 이루어진 중공형태의 산화 촉매부(20), 상기 산화 촉매부(20)의 내경에 형성된 저항 발열체(30), 상기 산화 촉매부(20)를 반경방향으로 이격을 두고 둘러싸며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부(40), 및 상기 산화 촉매부(20) 및 디젤미립자 필터부(40)의 일단을 실링시키기 위해 결합되는 플랜지(50)를 포함한다.The exhaust gas reducing device (100) for a diesel generator according to the preferred embodiment of the present invention is formed to face the exhaust gas conduit (10) and the exhaust gas conduit (10) for inducing exhaust gas discharged from the diesel generator and is formed of metal foam. Hollow oxidation catalyst portion 20 made of a hollow, resistance heating element 30 formed in the inner diameter of the oxidation catalyst portion 20, the hollow space made of a metal foam surrounding the oxidation catalyst portion 20 spaced apart in the radial direction Diesel particulate filter portion 40 of the type, and the flange 50 is coupled to seal one end of the oxidation catalyst portion 20 and the diesel particulate filter portion 40.
상기 디젤 발전기는 차량에 장착된 소형 발전기, 건물내의 비상용 발전기 등에 사용되는 동력발생 장치를 의미한다. The diesel generator refers to a power generator used for a small generator mounted on a vehicle, an emergency generator in a building, and the like.
상기 산화 촉매부(20) 및 디젤미립자 필터부(40)는 중공의 원통형이 되도록 개방 다공성(open porous) 금속폼 시트를 말아서(wound) 형성된다.The oxidation catalyst unit 20 and the diesel particulate filter unit 40 are formed by winding an open porous metal foam sheet to be a hollow cylinder.
상기 금속폼(metal foam)은 니켈 기반의 기본 폼 시트(sheet)에 바인더(binder) 및 합금분말(alloying powder)을 도포한 후 열처리를 통해 바인더를 제거하고 소결을 행함으로써 금속분말로부터 액상의 원자들이 기본 폼 시트의 스트럿(strut)으로 확산하여 균일한 합금의 금속폼을 형성한 것일 수 있다.The metal foam is a liquid atom from the metal powder by applying a binder and an alloying powder to a nickel-based basic foam sheet, and then removing the binder through heat treatment and sintering. May be diffused into the strut of the basic foam sheet to form a metal alloy of a uniform alloy.
또한, 상기 산화 촉매부(20) 및 디젤미립자 필터부(40)를 구성하는 금속폼의 재질은 니켈(Ni) 기반의 금속폼, 철(Fe) 기반의 금속폼, 철-니켈-크롬-알루미늄(FeNiCrAl)계 기반의 금속폼 및 금속 매쉬(metal mash) 중 선택된 재질로 형성될 수 있다.In addition, the material of the metal foam constituting the oxidation catalyst unit 20 and the diesel particulate filter unit 40 is nickel (Ni) -based metal foam, iron (Fe) -based metal foam, iron-nickel-chromium-aluminum It may be formed of a material selected from a (FeNiCrAl) -based metal foam and metal mash.
상기 산화 촉매부(20) 및 디젤미립자 필터부(40)를 금속폼을 적용함으로써 섬유상 구조의 금속폼을 배기가스가 경유하면서 배기가스내에 포함된 입자상 물질이 셀구조의 표면에 흡착될 수 있게 되어 입자상 물질을 여과시킬 수 있게 된다.By applying the metal foam to the oxidation catalyst unit 20 and the diesel particulate filter unit 40, the particulate matter contained in the exhaust gas can be adsorbed onto the surface of the cell structure while the exhaust gas passes through the metal foam of the fibrous structure. Particulate matter can be filtered.
상기 산화 촉매부(20)(Diesel Oxidation Catalyst: DOC)는 배기가스에 포함된 유해한 물질인 일산화탄소(C0), 탄화수소(HC)와 입자상 물질 중에서 용해성 유기물질(Soluble Organic Fraction)을 촉매와 반응시켜 이산화탄소(CO2), 물(H2O)로 정화시키는 작용을 한다.The oxidation catalyst unit 20 (DOC) is a carbon dioxide by reacting a soluble organic material (Soluble Organic Fraction) among the carbon monoxide (C0), hydrocarbons (HC) and particulate matter which are harmful substances contained in the exhaust gas with a catalyst (CO2), to purify with water (H2O).
보다 상세하게, 상기 산화 촉매부(20)는 탄화수소(HC)를 물(H20)과 이산화탄소(CO2)로, 일산화탄소(CO)를 이산화탄소(CO2)로, 일산화질소(NO)를 질소(N2)와 이산화질소(NO2)로 변환시켜 하기에 기술할 디젤미립자 필터부(40)(Diesel Particulate Filer: DPF)에 쌓인 입자상 물질(PM)의 연소 온도를 낮추어주는 역할을 한다.In more detail, the oxidation catalyst unit 20 includes hydrocarbons (HC) as water (H20) and carbon dioxide (CO2), carbon monoxide (CO) as carbon dioxide (CO2), and nitrogen monoxide (NO) as nitrogen (N2). It converts to nitrogen dioxide (NO 2) and serves to lower the combustion temperature of particulate matter (PM) accumulated in the diesel particulate filter unit 40 (DPF) to be described below.
상기 산화 촉매부(20)는 금속폼 시트에 촉매물질을 도포 또는 증착한 후 금속폼 시트를 중공의 원통형으로 말은 상태로 형성될 수 있다. 또한, 상기 산화 촉매부(20)는 중공의 원통형으로 말린 금속폼의 표면에 촉매물질을 도포 또는 증착하여 형성할 수 있다.The oxidation catalyst unit 20 may be formed in a state in which the metal foam sheet is rolled into a hollow cylindrical shape after coating or depositing a catalyst material on the metal foam sheet. In addition, the oxidation catalyst unit 20 may be formed by applying or depositing a catalyst material on the surface of the hollow cylindrical metal foam.
상기 산화 촉매부(20)에 사용되는 촉매물질은 백금, 팔라듐, 로듐, 이리듐, 루테늄, 텅스텐, 크롬, 망간, 철, 코발트, 구리, 아연을 포함하는 그룹으로부터 선택된 적어도 하나 이상이 될 수 있다.The catalyst material used in the oxidation catalyst unit 20 may be at least one selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, tungsten, chromium, manganese, iron, cobalt, copper, and zinc.
상기 저항 발열체(30)는 Fe-Cr계, Fe-Cr-Al계, Ni-Cr계, 몰리브덴, 텅스텐, 탄화규소, 몰리브덴 실리사이드, 란탄 크로마이트, 탄소, 지르코니아 중 적어도 하나 선택된 재질의 도선이 사용될 수 있다.The resistance heating element 30 may be formed of a conductive wire of at least one selected from Fe-Cr, Fe-Cr-Al, Ni-Cr, molybdenum, tungsten, silicon carbide, molybdenum silicide, lanthanum chromite, carbon, and zirconia. Can be.
상기 저항 발열체(30)는 상기 산화 촉매부(20)의 내경에 코일형태로 감아서 형성될 수 있다.The resistance heating element 30 may be formed by winding a coil in an inner diameter of the oxidation catalyst unit 20.
상기 산화 촉매부(20)의 타단 및 상기 디젤미립자 필터부(40)의 타단은 상기 배기가스가 상기 배기가스 도관(10)으로부터 상기 산화 촉매부(20)의 내경으로 흐를 수 있도록 홀이 형성된 플레이트(60)로 결합되며, 상기 플레이트(60)의 반경은 상기 디젤미립자 필터부(40)의 반경보다 큰 것을 특징으로 한다.The other end of the oxidation catalyst unit 20 and the other end of the diesel particulate filter 40 is formed with a hole so that the exhaust gas flows from the exhaust gas conduit 10 to the inner diameter of the oxidation catalyst unit 20 Coupled to 60, the radius of the plate 60 is characterized in that larger than the radius of the diesel particulate filter 40.
디젤미립자 필터부(Diesel Particulate Filter: DPF)는 디젤엔진 또는 디젤 발전기로부터 배출되는 입자상 물질을 필터에 축적시킴으로써 최종 배출되는 배기가스의 입자상 물질을 저감시키는 역할을 한다.Diesel Particulate Filter (DPF) serves to reduce the particulate matter of the final exhaust gas by accumulating particulate matter discharged from a diesel engine or a diesel generator in the filter.
상기 디젤미립자 필터부는 미립자 포획 효율을 유지하기 위해 축적된 수트(soot) 등의 미립자 물질을 산소와 반응시켜 제거하는데 디젤미립자 필터에 축적된 미립자를 연소시키는 것을 재생(regeneration)이라 한다.The diesel particulate filter unit reacts and removes particulate matter such as soot accumulated in order to maintain particulate trapping efficiency with oxygen, and burning the particulate matter accumulated in the diesel particulate filter is called regeneration.
상기 플레이트(60)의 반경이 상기 디젤미립자 필터부(40)의 반경보다 크게 함으로써 다음에 기술한 바와 같이, 상기 플레이트(60)와 하우징(70)이 결합될 경우 상기 디젤미립자 필터부(40)와 상기 하우징(70) 사이에 배기가스가 통과할 수 있는 공간이 형성될 수 있다.The radius of the plate 60 is larger than the radius of the diesel particulate filter 40 so that the diesel particulate filter portion 40 when the plate 60 and the housing 70 are coupled as described below. A space through which exhaust gas can pass may be formed between the housing 70 and the housing 70.
상기 디젤 발전기용 매연저감장치(100)는 상기 디젤미립자 필터부(40)를 둘러싸며 상기 플레이트(60) 및 배기가스 도관(10)과 접합되는 하우징(70)을 더 포함할 수 있다. 상기 하우징(70)을 도입함으로써 상기 배기가스 도관(10)의 일부, 산화 촉매부(20), 디젤미립자 필터부(40) 및 저항 발열체(30)가 하우징(70) 내에 일체형으로 매립될 수 있다.The particulate matter reduction apparatus 100 for the diesel generator may further include a housing 70 surrounding the diesel particulate filter unit 40 and bonded to the plate 60 and the exhaust gas conduit 10. By introducing the housing 70, a part of the exhaust gas conduit 10, the oxidation catalyst unit 20, the diesel particulate filter unit 40, and the resistance heating element 30 may be integrally embedded in the housing 70. .
또한, 상기 하우징(70)은 상기 디젤미립자 필터부(40)를 통과한 배기가스를 배출하기 위한 배기가스 배출구(80)가 형성된 것을 특징으로 한다.In addition, the housing 70 is characterized in that the exhaust gas discharge port 80 for discharging the exhaust gas passing through the diesel particulate filter 40 is formed.
디젤 발전기에서 배출된 배가스는 배기가스 도관(10)을 통해 산화 촉매부(20)의 내경으로 이동한 후 산화 촉매부(20)의 반경방향을 경유하여 디젤미립자 필터부(40)의 반경방향을 경유한 후 배기가스 배출구(80)를 통해 외부로 배출이 된다.The exhaust gas discharged from the diesel generator moves to the inner diameter of the oxidation catalyst unit 20 through the exhaust gas conduit 10 and then passes through the radial direction of the diesel particulate filter unit 40 via the radial direction of the oxidation catalyst unit 20. After passing through, the gas is discharged to the outside through the exhaust gas outlet 80.
본 발명의 경우, 산화 촉매부(20) 내경에 저항 발열체(30)를 도입하고, 발전기의 가동 후 특정 시간이 지나거나 발전기에 연결된 매연저감장치(100)에 특정 배압이 걸리는 경우, 상기 디젤 발전기로부터 상기 저항 발열체(30)에 전력을 인입시킴으로써 상기 디젤 발전기의 부하를 증가시키고, 그 결과 상기 디젤 발전기에서 배출되는 가스의 온도를 증가시킴으로써 배출가스가 상기 산화 촉매부를 통과하면서 2NO2 + C → 2NO + CO2의 반응을 촉진시킴으로써 필터를 재생시킬 수 있다.In the case of the present invention, when the resistance heating element 30 is introduced into the oxidation catalyst unit 20, and a specific time after the operation of the generator or a specific back pressure is applied to the smoke reduction device 100 connected to the generator, the diesel generator The load of the diesel generator is increased by drawing electric power into the resistance heating element 30 from the fuel cell, and as a result, the temperature of the gas discharged from the diesel generator is increased, thereby allowing the exhaust gas to pass through the oxidation catalyst portion, and thus 2NO 2 + C → 2NO. The filter can be regenerated by promoting the reaction of + CO 2 .
또한, 상기 배출가스가 산화 촉매부를 반경방향으로 통과할 때, 전력이 인입된 열선의 열에 의해 추가적으로 배출가스의 온도가 상승될 수 있다. In addition, when the exhaust gas passes through the oxidation catalyst unit in the radial direction, the temperature of the exhaust gas may be further increased by the heat of the heat wire into which power is drawn.
도 2는 본 발명의 바람직한 다른 실시예에 의한 디젤 발전기용 매연저감장치(100)를 도시한 도면이다. 2 is a view showing a soot reduction apparatus 100 for a diesel generator according to another embodiment of the present invention.
도 2에 의한 디젤 발전기용 매연저감장치(100)는 배기가스 도관(10)을 통과한 배기가스가 다공성의 금속폼으로 이루어진 산화 촉매부(20)를 통과한 후 저항 발열체(30)가 내경에 형성된 중공형의 디젤미립자 필터부(40)를 통과하게 된다.In the diesel particulate generator for reducing smoke 100 according to FIG. 2, after the exhaust gas passing through the exhaust gas conduit 10 passes through the oxidation catalyst unit 20 made of a porous metal foam, the resistance heating element 30 has an inner diameter. It passes through the hollow diesel particulate filter 40 formed.
본 발명의 바람직한 다른 실시예에 의한 디젤 발전기용 매연저감장치(100)는 디젤 발전기로부터 배출되는 배기가스를 유도하는 배기가스 도관(10), 상기 배기가스가 통과하도록 상기 배기가스 도관(10)에 대향하여 형성되며 금속폼으로 이루어진 산화 촉매부(20), 상기 산화 촉매부(20)와 이격을 두고 형성되며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부(40), 상기 디젤미립자 필터부(40)의 내경에 형성된 저항 발열체(30), 상기 저항 발열체(30)가 통과하며 상기 디젤미립자 필터부(40)의 일단을 실링시키기 위해 결합되는 플랜지(50), 및 상기 산화 촉매부(20)와 디젤미립자 필터부(40)를 결합시키며 상기 디젤미립자 필터부(40)의 반경보다 큰 반경을 가지며 홀이 형성된 플레이트(65)를 포함한다. According to another preferred embodiment of the present invention, a diesel particulate smoke reduction device (100) includes an exhaust gas conduit (10) for inducing exhaust gas discharged from a diesel generator, and the exhaust gas conduit (10) to allow the exhaust gas to pass. It is formed to face the oxidation catalyst portion 20 made of metal foam, spaced apart from the oxidation catalyst portion 20, the hollow diesel particulate filter portion 40 made of a metal foam, the diesel particulate filter portion 40 Resistance heating element 30 formed in the inner diameter of the), the resistance heating element 30 passes through and the flange 50 is coupled to seal one end of the diesel particulate filter 40, and the oxidation catalyst unit 20 and Combining the diesel particulate filter portion 40 and has a radius larger than the radius of the diesel particulate filter portion 40 includes a plate formed with a hole.
상기 디젤 발전기용 매연저감장치(100)는 상기 디젤미립자 필터부(40)를 둘러싸며 상기 플레이트(60) 및 배기가스 도관(10)과 접합되는 하우징(70)을 더 포함한다.The particulate matter reduction apparatus 100 for the diesel generator further includes a housing 70 surrounding the diesel particulate filter unit 40 and bonded to the plate 60 and the exhaust gas conduit 10.
또한, 상기 하우징(70)은 상기 디젤미립자 필터부(40)를 통과한 배기가스를 배출하기 위한 배기가스 배출구(80)가 형성될 수 있다.In addition, the housing 70 may be formed with an exhaust gas discharge port 80 for discharging the exhaust gas passing through the diesel particulate filter 40.
한편, 상기 디젤 발전기용 매연저감장치(100)는 상기 디젤미립자 필터부(40)의 전단과 후단 사이의 압력차를 검출하기 위한 차압계(미도시)를 더 포함할 수 있다. On the other hand, the diesel particulate smoke reduction device 100 may further include a differential pressure gauge (not shown) for detecting the pressure difference between the front end and the rear end of the diesel particulate filter 40.
배기가스가 디젤미립자 필터부(40)를 통과하면서 배기가스내의 수트(soot)등의 입자상물질이 필터에 축적되며 입자상 물질의 축적에 의해 배기가스의 흐름이 원활하지 않게 되어 디젤미립자 필터부의 전단과 후단에는 압력차가 발생할 수 있다. 이 경우, 디젤미립자 필터부의 전/후단에 차압계(미도시)를 설치하여 양단의 압력차를 검출함으로써 디젤미립자 필터부에 축적된 입자상 물질을 제거하기 위한 재생(regeneration) 시점을 알 수 있다. As the exhaust gas passes through the diesel particulate filter unit 40, particulate matter such as soot in the exhaust gas accumulates in the filter, and the exhaust gas flow is not smooth due to accumulation of particulate matter. A pressure difference may occur at the rear stage. In this case, by installing a differential pressure gauge (not shown) at the front and rear of the diesel particulate filter unit to detect the pressure difference between both ends, it is possible to know the regeneration time for removing particulate matter accumulated in the diesel particulate filter unit.
또한, 상기 디젤 발전기용 매연저감장치(100)는 상기 차압계(미도시)에 의해 검출된 압력차를 입력신호로 받아 상기 저항 발열체(30)에 전원을 인가하는 제어부(미도시)를 더 포함할 수 있다. 상기 제어부(미도시)는 상기 차압계(미도시)를 통해 검출된 디젤미립자 필터부 전/후단의 압력차를 입력신호로 받아 기설정된 기준값을 초과하는 경우에 상기 디젤 발전기로부터 상기 저항 발열체(30)에 전원을 인가시키며 압력차가 기설정된 기준값에 미달하는 경우에 상기 전원의 인가를 중단시킬 수 있다. In addition, the smoke reduction device for diesel generator 100 further includes a control unit (not shown) for receiving a pressure difference detected by the differential pressure gauge (not shown) as an input signal and applying power to the resistance heating element 30. Can be. The controller (not shown) receives the pressure difference between the front and rear ends of the diesel particulate filter detected through the differential pressure gauge (not shown) as an input signal and exceeds the predetermined reference value from the diesel generator. When the power is applied to the power supply and the pressure difference is less than the predetermined reference value, the application of the power may be stopped.
또한, 상기 기설정된 기준값은 220mbar 내지 280mbar 일 수 있다.In addition, the preset reference value may be 220 mbar to 280 mbar.
한편, 상기 저항 발열체(30)에 전원의 인가는 상기 디젤미립자 필터부를 재생한 시점부터 4시간 이상 엔진을 구동한 경우에도 이루어질 수 있다.On the other hand, the application of power to the resistance heating element 30 may be made even when the engine is driven for 4 hours or more from the time of regenerating the diesel particulate filter.
전술한 바와 같이, 본 발명의 경우, 산화 촉매부(20) 내경에 저항 발열체(30)를 도입하여, 발전기의 가동 후 특정 시간이 지나거나 발전기에 연결된 매연저감장치(100)에 특정 배압이 걸리는 경우, 상기 디젤 발전기로부터 상기 저항 발열체(30)에 전력을 인입시킴으로써 상기 디젤 발전기의 부하를 증가시키고, 그 결과 상기 디젤 발전기에서 배출되는 가스의 온도를 증가시킴으로써 배출가스를 재생시킬 수 있다.As described above, in the present invention, the resistance heating element 30 is introduced into the oxidation catalyst unit 20 inner diameter so that a specific back pressure is applied to the smoke reduction device 100 connected to the generator after a specific time after the generator is started. In this case, the load of the diesel generator is increased by drawing power into the resistance heating element 30 from the diesel generator, and as a result, the exhaust gas may be regenerated by increasing the temperature of the gas discharged from the diesel generator.
또한, 상기 배출가스가 산화 촉매부를 반경방향으로 통과할 때, 전력이 인입된 열선의 열에 의해 추가적으로 배출가스의 온도가 상승될 수 있다.In addition, when the exhaust gas passes through the oxidation catalyst unit in the radial direction, the temperature of the exhaust gas may be further increased by the heat of the heat wire into which power is drawn.
본 발명의 바람직한 다른 실시예에 의한 디젤 발전기의 매연저감방법은 디젤 발전기에서 배출되는 배기가스를 제공하는 단계, 상기 배기가스를 내부에 저항 발열체(30)가 형성되며 금속폼으로 이루어진 중공형상의 산화 촉매부(20)에 통과시키는 단계, 상기 배기가스를 상기 산화 촉매부(20)와 반경방향으로 이격을 두고 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부(40)에 통과시키는 단계, 상기 디젤미립자 필터부(40)의 전단과 후단의 압력차를 검출하는 단계, 및 상기 검출된 압력차가 기준치 이상인 경우 상기 저항 발열체(30)에 전원을 인가시키는 단계를 포함한다.According to another exemplary embodiment of the present invention, there is provided a method for reducing smoke in a diesel generator, the method comprising: providing an exhaust gas discharged from a diesel generator, a resistance heating element 30 is formed inside the exhaust gas, and a hollow oxide made of metal foam Passing through the catalyst unit 20, Passing the exhaust gas through the hollow diesel particulate filter 40 formed of a metal foam formed radially spaced apart from the oxidation catalyst unit 20, the; Detecting a pressure difference between the front end and the rear end of the diesel particulate filter unit 40, and applying power to the resistance heating element 30 when the detected pressure difference is equal to or greater than a reference value.
상기 산소 촉매부 및 디젤미립자 필터부(40)는 금속폼 시트를 말아 중공의 원통형상으로 형성한 후 일단을 막은 형태인 것을 특징으로 한다.The oxygen catalyst unit and the diesel particulate filter unit 40 is rolled up a metal foam sheet to form a hollow cylindrical shape, characterized in that the one end is blocked.
상기 저항 발열체(30)에 인가되는 전원은 검출된 상기 압력차를 입력신호로 하여 제어부를 통해 이루어질 수 있다.The power applied to the resistance heating element 30 may be made through a controller using the detected pressure difference as an input signal.
본 발명의 바람직한 다른 실시예에 의한 디젤 발전기의 매연저감방법은 디젤 발전기에서 배출되는 배기가스를 제공하는 단계, 상기 배기가스를 금속폼으로 이루어진 산화 촉매부(20)에 통과시키는 단계, 상기 배기가스를 상기 산화 촉매부(20)와 이격을 두고 형성되며, 내경에 저항 발열체(30)가 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부(40)에 통과시키는 단계, 상기 디젤미립자 필터부(40)의 전단과 후단의 압력차를 검출하는 단계, 및 검출된 상기 압력차가 기준치 이상인 경우 상기 저항 발열체(30)에 전원을 인가시키는 단계를 포함한다.According to another preferred embodiment of the present invention, a method for reducing smoke in a diesel generator includes providing exhaust gas discharged from a diesel generator, passing the exhaust gas through an oxidation catalyst unit 20 made of metal foam, and exhaust gas. Is formed spaced apart from the oxidation catalyst unit 20, the resistance heating element 30 is formed in the inner diameter and passed through the hollow diesel particulate filter portion 40 made of a metal foam, the diesel particulate filter portion ( Detecting a pressure difference between the front end and the rear end of step 40) and applying power to the resistance heating element 30 when the detected pressure difference is equal to or greater than a reference value.
또한, 상기 저항 발열체(30)에 인가되는 전원은 상기 검출된 압력차를 입력신호로 하여 제어부를 통해 이루어질 수 있다. In addition, the power applied to the resistance heating element 30 may be made through the controller using the detected pressure difference as an input signal.
제어부에 의해 저항 발열체(30)에 전원이 인가되면, 상기 디젤 발전기의 부하가 증대되고 그 결과 상기 디젤 발전기에서 배출되는 가스의 온도가 증가함으로써 배출가스가 상기 산화 촉매부를 경유하면서 재생이 이루어지게 된다.When power is applied to the resistance heating element 30 by the controller, the load of the diesel generator is increased, and as a result, the temperature of the gas discharged from the diesel generator is increased, so that the exhaust gas is regenerated while passing through the oxidation catalyst unit. .
또한, 상기 산화 촉매부 내에 형성된 저항 발열체의 열에 의해 부가적으로 배출가스의 재생이 촉진되게 된다.In addition, the regeneration of the exhaust gas is additionally promoted by the heat of the resistance heating element formed in the oxidation catalyst part.
도 3은 소형 발전기의 부하(load)에 따른 배기가스 온도 변화에 대한 값으로 약 60% 부하에서 배기 온도는 300℃로 재생 온도에 도달함을 알 수 있다. 즉, 강제 재생시 5kW급 발전기의 경우 3kW의 전력을 저항 발열체(30)에 인입하면 엔진 배출가스 온도가 300℃에 도달하여 재생이 가능해지며, 필터 내부에 장착된 저항 발열체(30)가 가열됨으로써, 재생 효율을 증가시킬 수 있다. Figure 3 is a value for the exhaust gas temperature change according to the load (load) of the small generator can be seen that the exhaust temperature reaches a regeneration temperature at 300 ℃ at about 60% load. That is, in the case of forced regeneration, when a power of 3 kW is introduced into the resistance heating element 30, the engine exhaust gas temperature reaches 300 ° C., thereby allowing regeneration, and the resistance heating element 30 mounted inside the filter is heated. Can increase the regeneration efficiency.
도 4는 본원발명을 적용하여 강제 재생시 필터 전단의 압력이 초기 상태로 회복하여 재생이 되었음을 나타내는 그래프이다.4 is a graph showing that the pressure of the front end of the filter is restored to the initial state during the forced regeneration by applying the present invention was regenerated.
본 발명을 적용함으로써, 디젤 발전기의 매연저감장치의 필터를 재생(regeneration)시 저항 발열체에 전원을 인가함으로써 엔진의 부하가 증대되고 이에 의해 엔진에서 배출되는 배출가스의 온도가 증가할 뿐만 아니라 저항 발열체가 가열됨으로써 저항 발열체를 경유하는 배출가스가 가열됨으로써 배출가스의 고온 구간을 증대시켜 필터의 재생 효율을 증가시킬 수 있다.By applying the present invention, the load of the engine is increased by applying power to the resistance heating element when regenerating the filter of the smoke reduction device of the diesel generator, thereby increasing the temperature of the exhaust gas discharged from the engine as well as the resistance heating element. By heating the exhaust gas via the resistance heating element is heated to increase the high temperature section of the exhaust gas to increase the regeneration efficiency of the filter.
요약하면, 본 발명은 매연저감장치의 필터 내부에 히터를 삽입함으로써 필터 표면에 축적된 매연을 저항 발열체 열과 발전기의 부하가 증가함에 따라 발전기에서 배출되는 배기가스의 온도가 증가함으로써 배기가스를 산화시키는 방식으로 필터에 포집된 수트(soot) 등을 10분 내로 산화시켜 필터를 원 상태로 재생시킬 수 있다.In summary, the present invention is to insert the heater into the filter of the smoke reduction device to oxidize the exhaust gas by increasing the temperature of the exhaust gas discharged from the generator as the resistance heating element heat and the load of the generator increases the smoke accumulated on the filter surface. In this manner, the soot and the like collected in the filter can be oxidized within 10 minutes to restore the filter to its original state.
본 발명에 의한 디젤 발전기는 빌딩에 공급되는 전력이 차단되는 등의 비상시에 가동되는 비상용 디젤 발전기의 매연을 저감하기 위한 장치 및 그 방법에 적용되는 것을 특징으로 한다.The diesel generator according to the present invention is characterized in that it is applied to an apparatus and a method for reducing soot in an emergency diesel generator that is operated in an emergency such as the power supplied to a building is cut off.
이상 첨부된 도면을 참조하여 본 발명의 실시예를 설명하였지만, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명이 그 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있다는 것을 이해할 수 있을 것이다.Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.
그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변경된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. .

Claims (19)

  1. 디젤 발전기에서 배출되는 배기가스를 유도하는 배기가스 도관;An exhaust gas conduit for inducing exhaust gas emitted from the diesel generator;
    상기 배기가스 도관과 대향하여 형성되며 금속폼으로 이루어진 중공형태의 산화 촉매부;A hollow oxidation catalyst portion formed to face the exhaust gas conduit and formed of a metal foam;
    상기 산화 촉매부의 내경에 형성된 저항 발열체;A resistance heating element formed on an inner diameter of the oxidation catalyst part;
    상기 산화 촉매부를 반경방향으로 이격을 두고 둘러싸며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부; 및 A hollow diesel particulate filter comprising a metal foam surrounded by spaced apart from the oxidation catalyst in a radial direction; And
    상기 저항 발열체가 통과하며 상기 산화 촉매부 및 디젤미립자 필터부의 일단을 실링시키기 위해 결합되는 플랜지를 포함하는 디젤 발전기용 매연저감장치.And a flange through which the resistance heating element passes and coupled to seal one end of the oxidation catalyst unit and the diesel particulate filter unit.
  2. 제 1 항에 있어서, The method of claim 1,
    상기 산화 촉매부 및 디젤미립자 필터부는 중공의 원통형상이 되도록 개방 다공성 금속폼 시트를 말아서 형성된 것을 특징으로 하는 디젤 발전기용 매연저감장치. The oxidation catalyst unit and the diesel particulate filter portion smoke reduction device for a diesel generator, characterized in that formed by rolling an open porous metal foam sheet to a hollow cylindrical shape.
  3. 제 1 항에 있어서, The method of claim 1,
    상기 산화 촉매부는 백금, 팔라듐, 로듐, 이리듐, 루테늄, 텅스텐, 크롬, 망간, 철, 코발트, 구리, 아연을 포함하는 그룹으로부터 선택된 적어도 하나 이상의 물질이 포함된 것을 특징으로 디젤 발전기용 매연저감장치. The oxidation catalyst unit is at least one material selected from the group consisting of platinum, palladium, rhodium, iridium, ruthenium, tungsten, chromium, manganese, iron, cobalt, copper, zinc.
  4. 제 1 항에 있어서, The method of claim 1,
    상기 산화 촉매부 및 디젤미립자 필터부를 구성하는 금속폼은 Ni계 금속폼, Fe계 금속폼, FeNiCrAl계 금속폼 및 금속 매쉬(metal mash) 중 선택된 적어도 하나로 이루어진 것을 특징으로 하는 디젤 발전기용 매연저감장치. The metal foam constituting the oxidation catalyst unit and the diesel particulate filter unit is a diesel particulate smoke reduction device, characterized in that made of at least one selected from Ni-based metal foam, Fe-based metal foam, FeNiCrAl-based metal foam and metal mash (metal mash). .
  5. 제 1 항에 있어서,The method of claim 1,
    상기 저항 발열체는 Fe-Cr계, Fe-Cr-Al계, Ni-Cr계, 몰리브덴, 텅스텐, 탄화규소, 몰리브덴 실리사이드, 란탄 크로마이트, 탄소 및 지르코니아 중 적어도 하나 선택된 재질의 도선을 코일형태로 감아서 형성된 것을 특징으로 하는 디젤 발전기용 매연저감장치.The resistive heating element is a coil wound around at least one material selected from Fe-Cr-based, Fe-Cr-Al-based, Ni-Cr-based, molybdenum, tungsten, silicon carbide, molybdenum silicide, lanthanum chromite, carbon, and zirconia. Soot reduction device for a diesel generator, characterized in that formed.
  6. 제 1 항에 있어서,The method of claim 1,
    상기 산화 촉매부의 타단 및 디젤미립자 필터부의 타단은 상기 배기가스가 상기 배기가스 도관으로부터 상기 산화 촉매부의 내경으로 흐르도록 홀이 형성된 플레이트로 결합되며,The other end of the oxidation catalyst portion and the other end of the diesel particulate filter portion are coupled to a plate formed with a hole so that the exhaust gas flows from the exhaust gas conduit to the inner diameter of the oxidation catalyst portion,
    상기 플레이트의 반경은 상기 디젤미립자 필터부의 반경보다 큰 것을 특징으로 하는 디젤 발전기용 매연저감장치. And a radius of the plate is greater than a radius of the diesel particulate filter.
  7. 제 6 항에 있어서,The method of claim 6,
    상기 디젤미립자 필터부를 둘러싸며 상기 플레이트 및 배기가스 도관과 접합되는 하우징을 더 포함하는 디젤 발전기용 매연저감장치. And a housing surrounding the diesel particulate filter and joined to the plate and the exhaust gas conduit.
  8. 제 7 항에 있어서,The method of claim 7, wherein
    상기 하우징은 상기 디젤미립자 필터부를 통과한 배기가스를 배출하기 위한 배기가스 배출구가 형성된 것을 특징으로 하는 디젤 발전기용 매연저감장치. The housing is a smoke reduction device for a diesel generator, characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter.
  9. 디젤 발전기에서 배출되는 배기가스를 유도하는 배기가스 도관;An exhaust gas conduit for inducing exhaust gas emitted from the diesel generator;
    상기 배기가스가 통과하도록 상기 배기가스 도관에 대향하여 형성되며 금속폼으로 이루어진 산화 촉매부;An oxidation catalyst part formed of a metal foam and formed to face the exhaust gas conduit so that the exhaust gas passes;
    상기 산화 촉매부와 이격을 두고 형성되며 금속폼으로 이루어진 중공형태의 디젤미립자 필터부; A hollow diesel particulate filter part formed to be spaced apart from the oxidation catalyst part and made of a metal foam;
    상기 디젤미립자 필터부의 내경에 형성된 저항 발열체;Resistance heating element formed in the inner diameter of the diesel particulate filter;
    상기 저항 발열체가 통과하며 상기 디젤미립자 필터부의 일단을 실링시키기 위해 결합되는 플랜지; 및A flange through which the resistance heating element passes and coupled to seal one end of the diesel particulate filter; And
    상기 산화 촉매부와 디젤미립자 필터부를 결합시키며 상기 디젤미립자 필터부의 반경보다 큰 반경을 가지며 홀이 형성된 플레이트를 포함하는 디젤 발전기용 매연저감장치.Combination of the oxidation catalyst unit and the diesel particulate filter portion and the smoke reduction device for a diesel generator comprising a plate having a radius larger than the radius of the diesel particulate filter portion.
  10. 제 9 항에 있어서,The method of claim 9,
    상기 디젤미립자 필터부를 둘러싸며 상기 플레이트 및 배기가스 도관과 접합되는 하우징을 더 포함하는 디젤 발전기용 매연저감장치. And a housing that surrounds the diesel particulate filter and is joined to the plate and the exhaust gas conduit.
  11. 제 10 항에 있어서,The method of claim 10,
    상기 하우징은 상기 디젤미립자 필터부를 통과한 배기가스를 배출하기 위한 배기가스 배출구가 형성된 것을 특징으로 하는 디젤 발전기용 매연저감장치. The housing is a smoke reduction device for a diesel generator, characterized in that the exhaust gas outlet for discharging the exhaust gas passing through the diesel particulate filter.
  12. 디젤 발전기에서 배출되는 배기가스를 제공하는 단계;Providing exhaust gas discharged from the diesel generator;
    상기 배기가스를 내부에 저항 발열체가 형성되며 금속폼으로 이루어진 중공형상의 산화 촉매부에 통과시키는 단계;Passing the exhaust gas through a hollow oxidation catalyst part formed of a metal foam having a resistance heating element therein;
    상기 배기가스를 상기 산화 촉매부와 반경방향으로 이격을 두고 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부에 통과시키는 단계;Passing the exhaust gas through the hollow diesel particulate filter part formed radially spaced from the oxidation catalyst part and made of metal foam;
    상기 디젤미립자 필터부의 전단과 후단의 압력차를 검출하는 단계; 및Detecting a pressure difference between the front end and the rear end of the diesel particulate filter; And
    상기 검출된 압력차가 기준치 이상인 경우 상기 저항 발열체에 전원을 인가시키는 단계를 포함하는 디젤 발전기의 매연저감방법.And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
  13. 제 12 항에 있어서,The method of claim 12,
    상기 산소 촉매부 및 디젤미립자 필터부는 금속폼 시트를 말아 중공의 원통형상으로 형성한 후 일단을 막은 형태인 것을 특징으로 하는 디젤 발전기의 매연저감방법.The method of reducing the smoke of the diesel generator, characterized in that the oxygen catalyst portion and the diesel particulate filter is rolled up a metal foam sheet to form a hollow cylindrical shape and then closed one end.
  14. 제 12 항에 있어서,The method of claim 12,
    상기 저항 발열체에 인가되는 전원은 검출된 상기 압력차를 입력신호로 하여 제어부를 통해 이루어지는 것을 특징으로 하는 디젤 발전기의 매연저감방법.The power applied to the resistance heating element is a smoke reduction method of the diesel generator, characterized in that through the control unit using the detected pressure difference as an input signal.
  15. 제 12 항 또는 제 14 항에 있어서,The method according to claim 12 or 14, wherein
    상기 저항 발열체에 전원을 인가함에 의해 상기 디젤 발전기의 부하가 증가하며 이에 의해 상기 디젤 발전기에서 배출되는 배기가스의 온도가 상승하는 것을 특징으로 하는 디젤 발전기의 매연저감방법.The load of the diesel generator is increased by applying power to the resistance heating element so that the temperature of the exhaust gas discharged from the diesel generator is increased, the smoke reduction method of the diesel generator.
  16. 디젤 발전기에서 배출되는 배기가스를 제공하는 단계;Providing exhaust gas discharged from the diesel generator;
    상기 배기가스를 금속폼으로 이루어진 산화 촉매부에 통과시키는 단계;Passing the exhaust gas through an oxidation catalyst part made of metal foam;
    상기 배기가스를 상기 산화 촉매부와 이격을 두고 형성되며, 내경에 저항 발열체가 형성되며 금속폼으로 이루어진 중공형상의 디젤미립자 필터부에 통과시키는 단계;Passing the exhaust gas is spaced apart from the oxidation catalyst portion, a resistance heating element is formed in the inner diameter and passing through the hollow diesel particulate filter made of a metal foam;
    상기 디젤미립자 필터부의 전단과 후단의 압력차를 검출하는 단계; 및Detecting a pressure difference between the front end and the rear end of the diesel particulate filter; And
    검출된 상기 압력차가 기준치 이상인 경우 상기 저항 발열체에 전원을 인가시키는 단계를 포함하는 디젤 발전기의 매연저감방법.And applying power to the resistance heating element when the detected pressure difference is greater than or equal to a reference value.
  17. 제 16 항에 있어서,The method of claim 16,
    상기 디젤미립자 필터부는 금속폼 시트를 말아 중공의 원통형상으로 형성한 후 일단을 막은 형태인 것을 특징으로 하는 디젤 발전기의 매연저감방법.The diesel particulate filter portion rolled metal foam sheet to form a hollow cylindrical shape, and then the end of the diesel generator, characterized in that the shape of the clogging.
  18. 제 16 항에 있어서,The method of claim 16,
    상기 저항 발열체에 인가되는 전원은 상기 검출된 압력차를 입력신호로 하여 제어부를 통해 이루어지는 것을 특징으로 하는 디젤 발전기의 매연저감방법.The power applied to the resistance heating element is a smoke reduction method of the diesel generator, characterized in that made through the control unit using the detected pressure difference as an input signal.
  19. 제 16 항 내지 제 18 항 중 어느 한 항에 있어서,The method according to any one of claims 16 to 18,
    상기 저항 발열체에 전원을 인가함에 의해 상기 디젤 발전기의 부하가 증가하며 이에 의해 상기 디젤 발전기에서 배출되는 배기가스의 온도가 상승하는 것을 특징으로 하는 디젤 발전기의 매연저감방법.The load of the diesel generator is increased by applying power to the resistance heating element so that the temperature of the exhaust gas discharged from the diesel generator is increased, the smoke reduction method of the diesel generator.
PCT/KR2012/008263 2011-10-21 2012-10-11 Exhaust reduction device for diesel generator WO2013058498A2 (en)

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KR1020110108086A KR101331185B1 (en) 2011-10-21 2011-10-21 Emission control mehtod for deisel electric generator

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CN111992027A (en) * 2020-08-17 2020-11-27 王小华 Exhaust treatment device for diesel generator

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JP2001073742A (en) * 1999-06-29 2001-03-21 Sumitomo Electric Ind Ltd Particulate trap for diesel engine
JP2004278396A (en) * 2003-03-14 2004-10-07 Sakura Shokai:Kk Exhaust emission control device
KR20070000044A (en) * 2005-06-27 2007-01-02 코리아 니켈 주식회사 Filter for an apparatus for purifying exhaust gas from a diesel engine

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JP2001073742A (en) * 1999-06-29 2001-03-21 Sumitomo Electric Ind Ltd Particulate trap for diesel engine
JP2004278396A (en) * 2003-03-14 2004-10-07 Sakura Shokai:Kk Exhaust emission control device
KR20070000044A (en) * 2005-06-27 2007-01-02 코리아 니켈 주식회사 Filter for an apparatus for purifying exhaust gas from a diesel engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111992027A (en) * 2020-08-17 2020-11-27 王小华 Exhaust treatment device for diesel generator

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