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KR100245500B1 - Nox treatment device of diesel engine - Google Patents

Nox treatment device of diesel engine Download PDF

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Publication number
KR100245500B1
KR100245500B1 KR1019970007591A KR19970007591A KR100245500B1 KR 100245500 B1 KR100245500 B1 KR 100245500B1 KR 1019970007591 A KR1019970007591 A KR 1019970007591A KR 19970007591 A KR19970007591 A KR 19970007591A KR 100245500 B1 KR100245500 B1 KR 100245500B1
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fuel
case
mixer
mixing chamber
nitrogen oxide
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KR1019970007591A
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Korean (ko)
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KR19980072675A (en
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유철호
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류정열
기아자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
    • F02M27/02—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/06—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air
    • F02M31/08—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot gases, e.g. by mixing cold and hot air the gases being exhaust gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

본 발명은 디젤엔진 질소산화물 처리장치의 연료가스 개질장치에 관한 것으로, 암모니아 환원법을 이용한 디젤엔진의 질소산화물 처리장치는 연료개질장치의 비효율성에 의해 실제 차량에 적용되기 곤란하다는 문제점이 있었다.The present invention relates to a fuel gas reformer of a diesel engine nitrogen oxide treatment apparatus, and a nitrogen oxide treatment apparatus of a diesel engine using ammonia reduction has a problem in that it is difficult to be applied to an actual vehicle due to the inefficiency of the fuel reformer.

즉, 연료와 공기로 부터 개질가스를 얻기 위하여 수증기 개질법이 사용되고 있는데, 수증기를 제공하기 위한 각종 부가장치와 그 구조의 복잡성 때문에 실제 차량에 그 탑재가 곤란한 것이다.In other words, steam reforming is used to obtain reformed gas from fuel and air, and it is difficult to mount it on a real vehicle due to the complexity of various additional devices for providing steam and the structure thereof.

이에 본 발명은 예시도면 도 2 에서와 같이 케이스(20) 내에 연료개질촉매(Ni : K2O : Al2O3)와 글로우 플러그(22)가 내장되어 케이스(20)의 입구에 무화된 연료와 에열된 공기를 혼합 흡입시켜 글로우 플러그(22)를 통해 혼합기를 연소시키고, 연소된 혼합기가 연료개질촉매를 거쳐 개질가스로 변환되도록 한 것이다.Accordingly, the present invention is a fuel reforming catalyst (Ni: K 2 O: Al 2 O 3 ) and the glow plug 22 is built into the case 20 as shown in Figure 2 fuel atomized at the inlet of the case 20 The mixed air is sucked in and heated to burn the mixer through the glow plug 22, and the burned mixer is converted into the reformed gas through the fuel reforming catalyst.

따라서, 종래 수증기 개질법에서와 같은 각종 부가장치가 삭제되어 실제 차량에 상기 질소산화물 처리장치에 응용되는 효과가 있는 것이다.Therefore, various additional devices such as those of the conventional steam reforming method are eliminated, and thus, there is an effect that the nitrogen oxide treatment apparatus is applied to the actual vehicle.

Description

디젤엔진 질소산화물 처리장치의 연료개질장치Fuel reformer of diesel engine nitrogen oxide treatment equipment

본 발명은 디젤엔진 질소산화물 처리장치의 연료개질장치에 관한 것이다The present invention relates to a fuel reformer of a diesel engine nitrogen oxide treatment apparatus.

디젤엔진의 연소는 평균공기 과잉률이 1.0 이상되는 산화분위기속에서 행해지기 때문에 가솔린엔진에 비하여 HC, CO의 배출량은 적은 편이지만 실린더내에서 매우 짧은 시간안에 확산적인 분무연소를 끝마쳐야 하기 때문에 검은연기와 타르성 물질 등 이른바 입자상 물질의 배출이 많아 시계불량, 더러움, 악취라는점에서 사람들에게 불쾌감을 주고 있다.Since combustion of diesel engines is carried out in an oxidizing atmosphere with an average excess air ratio of 1.0 or more, the emission of HC and CO is lower than that of gasoline engines, but it is necessary to finish diffuse spray combustion in a very short time in a cylinder. There are many emissions of so-called particulate matter such as smoke and tard substances, which cause discomfort to people in terms of poor visibility, dirt and odor.

또한, 광화학스모그와 산성비 등의 원흉중 하나로 알려져 있는 질소산화물(NOx)은 배기가스속에 함유되는 잉여산소 때문에 가솔린엔진에서 사용하고 있는 3원촉매와 이에따른 공연비 피드백제어를 수행하기 곤란하고, 디젤엔진에서 배출되는 질소산화물의 양은 가솔린엔진의 그것에 비해 상당히 많다.In addition, nitrogen oxide (NO x ), which is known as one of the main causes of photochemical smog and acid rain, is difficult to carry out the three-way catalyst used in gasoline engines and the following air-fuel ratio feedback control due to the surplus oxygen contained in the exhaust gas. The amount of nitrogen oxides emitted from engines is considerably higher than that of gasoline engines.

이러한 질소산화물의 생성은 고온분위기 하에서 생성되는 서멀 질소산화물, 그리고 연료속에 함유된 질소분에서 행성되는 퓨얼 질소산화물 및 연료가 연소실 안에서 분해될 때 비교적 저온에서 행성되는 프롬프트 질소산화물등 3 가지 경로로 알려져 있다.The formation of nitrogen oxides is known in three ways: thermal nitrogen oxides produced under high temperature atmospheres, fuel nitrogen planets formed from nitrogen contained in fuels, and prompt nitrogen oxides formed at relatively low temperatures when fuel is decomposed in a combustion chamber. .

이 가운데서 엔진 모디피케이션으로 어느 정도까지 제어할 수 있는 것은 서멀 질소산화물의 생성제어이다.Among them, the generation of thermal nitrogen oxides can be controlled to an extent by engine modulation.

따라서, 보다 적극적으로 질소산화물을 저감시킬 방법이 필요하며, 이에 현재 의욕적으로 개발중인 것이 암모니아 환원법을 이용한 질소산화물의 처리장치이다.Therefore, there is a need for a method for more aggressively reducing nitrogen oxides, which is currently being enthusiastically developed for treating nitrogen oxides using ammonia reduction.

즉, 보일러나 가스터빈 등 고정된 발생원으로 부터 배출되는 질소산화물의 후처리에 V2O5: TiO2촉매에 의한 암모니아 환원법이 널리 이용되고 있으며, 고농도의 산소가 공존하는 계에서도 암모니아가 선택적으로 질소산화물을 환원한다는 것을 이용하여 이를 디젤차량에 응용한 것이다.In other words, ammonia reduction by V 2 O 5 : TiO 2 catalyst is widely used for the post-treatment of nitrogen oxides emitted from fixed sources such as boilers and gas turbines. It is applied to diesel vehicles using reducing nitrogen oxides.

그러나. 이러한 암모니아 환원법을 이용한 배기가스 처리장치에 있어서는 암모니아가 필수불가결이고, 디젤차량에 주기적으로 암모니아를 충진하는 것이 곤란하므로, 디젤차량의 연료와 공기로 부터 암모니아를 얻고 이를 배기계에 반영한 것이다.But. In the exhaust gas treatment apparatus using the ammonia reduction method, ammonia is indispensable and it is difficult to periodically fill the diesel vehicle with ammonia. Therefore, ammonia is obtained from the fuel and air of the diesel vehicle and reflected in the exhaust system.

예시도면 도 1 은 이러한 암모니아 환원법을 이용한 질소산화물 처리장치를 나타낸 개념도로서,질소산화물 처리장치는 연료개질장치(1), 수소분리장치(2), 암모니아합성장치(3), 질소산화물 환원장치(4) 등으로 구성되며, 부수적으로 에어탱크(5)와 암모니아 흡착장치(6) 및 저장탱크(7), 그리고 컨트롤유니트에 의해 제어되는 밸브(8)와 일산화탄소 분사장치(9)가 설치되어 있다.1 is a conceptual diagram showing a nitrogen oxide treatment apparatus using the ammonia reduction method, the nitrogen oxide treatment apparatus is a fuel reforming apparatus (1), hydrogen separation device (2), ammonia synthesis device (3), nitrogen oxide reduction device ( 4), and additionally, an air tank 5, an ammonia adsorption device 6, a storage tank 7, and a valve 8 and a carbon monoxide injector 9 controlled by a control unit are provided. .

여기서, 연료개질장치를 통해 연료와 공기로 부터 개질가스를 얻고, 이로부터 다시 수소분리장치를 통해 수소를 분리, 공기중 질소와 1:3 비율로 혼합된 기체를 생성하고, 이를 암모니아 합성장치의 촉매 (Ru : CsOH : Al2O3)를 통해 암모니아를 합성하여 배기계에 반영하여야 한다.Here, a reformed gas is obtained from fuel and air through a fuel reformer, and hydrogen is separated from the hydrogen through a hydrogen separator to generate a gas mixed with nitrogen in the air in a 1: 3 ratio, which is then converted into an ammonia synthesis apparatus. Ammonia must be synthesized through a catalyst (Ru: CsOH: Al 2 O 3 ) and reflected in the exhaust system.

이를 좀더 상세히 설명하면 연료개질장치에서는 메탄올 : 수증기 개질법을 이용하여 수소를 획득하고 있다.In more detail, the fuel reformer obtains hydrogen using methanol: steam reforming.

즉, CH3OH → CO + 2H2 Ie CH 3 OH → CO + 2H 2

CO + H2O → CO2+ H2 CO + H 2 O → CO 2 + H 2

CH3OH + H2O ↔ CO2+ 3H2a CH 3 OH + H 2 O ↔ CO 2 + 3H 2a

에서 처럼, 메탄올의 분해반응에서 생긴 일산화탄소가 수증기와 반응하여 일산화탄소와 수로로 전환되는 수성가스 변환반응이 일어나는데, 이때 발생되는 수소를 다음 단계인 수소분리장치로 보내고, 뒤이어 질소와 촉매반응시켜 암모니아를 생성하는 것이다.As in, the carbon monoxide produced from the decomposition of methanol reacts with water vapor to convert carbon monoxide and water into a water gas conversion reaction.The hydrogen is then sent to a hydrogen separation device, which is then subjected to a catalytic reaction with nitrogen. To generate.

그러나, 암모니아 환원법을 이용한 디젤엔진의 질소산화물 처리장치는 연료개질장치의 비효율성에 의해 실제 차량에 적용되기 곤란하다는 문제점이 있었다.However, the nitrogen oxide treatment apparatus of the diesel engine using the ammonia reduction method has a problem that it is difficult to apply to the actual vehicle due to the inefficiency of the fuel reformer.

즉, 연료와 공기로 부터 개질가스를 얻기 위하여 수증기 개질법이 사용되고 있는데, 수증기를 제공하기 위하여 메탄올과 수증기가 제공되어야 하고, 흡열반응에 따른 가열장치가 장착되어야 하는 등 각종 부가장치와 그 구조의 복잡성 때문에 실제 차량에 그 탑재가 곤란한 것이다.In other words, steam reforming method is used to obtain reformed gas from fuel and air. In addition, methanol and steam must be provided to provide steam, and a heating device according to endothermic reaction must be installed. Therefore, it is difficult to mount it on a real vehicle.

이에 본 발명은 상기 문제점을 해소하기 위한 디젤엔진 질소산화물 처리장치의 연료개질장치를 제공함에 그 목적이 있는 것이다.Accordingly, an object of the present invention is to provide a fuel reformer of a diesel engine nitrogen oxide treatment apparatus for solving the above problems.

이를 위한 본 발명은 디젤엔진의 연료와 혼합기의 연소물로 부터 촉매인 Ni : K2O : Al2O3를 통해 개질가스를 얻는 것으로, 케이스 내에 연료개질촉매 와 글로우 플러그가 내장되어 케이스의 입구에 무화된 연료와 에열된 공기를 혼합 흡입시켜 글로우 플러그를 통해 혼합기를 연소시키고, 연소된 혼합기가 연료개질촉매를 거쳐 개질가스로 변환되도록 한 것이다.The present invention for this purpose is to obtain a reformed gas from the fuel of the diesel engine and the combustion product of the mixer through the catalyst Ni: K 2 O: Al 2 O 3 , the fuel reforming catalyst and the glow plug is built into the case at the inlet of the case The atomized fuel and the heated air are mixed and sucked to burn the mixer through the glow plug, and the burned mixer is converted into the reformed gas through the fuel reforming catalyst.

따라서, 종래 수증기 개질법에서와 같은 각종 부가장치가 삭제되어 실제 차량에 상기 질소산화물 처리장치를 응용할 수 있는 것이다.Therefore, various additional devices as in the conventional steam reforming method are eliminated, and the nitrogen oxide treatment apparatus can be applied to an actual vehicle.

도 1 은 디젤엔진 질소산화물 처리장치의 개념도,1 is a conceptual diagram of a diesel engine nitrogen oxide treatment apparatus,

도 2 는 본 발명에 따른 연료개질장치를 나타낸 개념도이다.2 is a conceptual diagram showing a fuel reforming apparatus according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

20 : 케이스, 22 : 글로우 플러그,20: case, 22: glow plug,

24 : 연료개질촉매블럭, 26 : 혼합실,24: fuel reforming catalyst block, 26: mixing chamber,

28 : 열교환기, 30 : 컴프레셔,28: heat exchanger, 30: compressor,

32 : 흡기파이프, 34 : 가열장치,32: intake pipe, 34: heating device,

36 : 연료공급파이프, 38 : 연료증발기,36: fuel supply pipe, 38: fuel evaporator,

40 : 연료펌프, 42 : 코일파이프,40: fuel pump, 42: coil pipe,

44 : 밸브.44: valve.

이하 첨부된 예시도면과 함께 본 발명을 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

본 발명은 혼합기와 연료개질촉매가 반응되도록 케이스(20)가 형성되어 그 내측에 혼합기를 연소하는 글로우 플러그(22)와 연소된 가스를 반응시키는 연료개질촉매(Ni : K2O : Al2O3)블럭(24)이 설치되고, 상기 케이스(20)의 입구측에 혼합실(26)과 토출구측에 열교환기(28)가 설치되는 한편, 상기 열교환기(28)의 외주를 따라 컴프레셔(30)와 연결되는 흡기파이프(32)가 설치되고 흡기파이프(32)에는 가열장치(34)가 설치되어 상기 혼합실(26)에 연결됨과 더불어, 연료공급파이프(36)가 혼합실(26)을 관통하여 케이스(20)의 입구와 연결되고, 상기 연료공급파이프(36)는 연료증발기(38)와 연결되며, 연료증발기(38)는 연료펌프(40)와 연결됨과 동시에, 상기 연료개질촉매블럭(24)에 코일파이프(42)가 권취되어 그 흡입부는 연료펌프(40)와 연결되고 토출부는 상기 혼합실(26)에 연결된 구조인 디젤엔진 질소산화물 처리장치의 연료개질장치이다.In the present invention, the case 20 is formed so that the mixer and the fuel reforming catalyst react with each other, and a fuel reforming catalyst (Ni: K 2 O: Al 2 O reacting the glow plug 22 and the combusted gas) combusts the mixture therein. 3 ) A block 24 is installed, and a heat exchanger 28 is installed at the mixing chamber 26 and the discharge port side at the inlet side of the case 20, while a compressor (a) along the outer circumference of the heat exchanger 28 is provided. Intake pipe 32 connected to the 30 is installed, the heating device 34 is installed in the intake pipe 32 is connected to the mixing chamber 26, the fuel supply pipe 36 is the mixing chamber 26 It is connected to the inlet of the case 20, the fuel supply pipe 36 is connected to the fuel evaporator 38, the fuel evaporator 38 is connected to the fuel pump 40 and at the same time, the fuel reforming catalyst The coil pipe 42 is wound around the block 24 so that the suction part is connected to the fuel pump 40 and the discharge part is connected to the mixing chamber 26. It is a fuel reformer of the diesel engine nitrogen oxide treatment system which is connected structure.

예시도면 도 3 은 본 발명에 따른 연료개질장치를 나타낸 개념도로서, 본 발명은 연료개질촉매(Ni : K2O : Al2O3)를 이용하여 공기와 연료로 부터 개질가스인 H2, CO2, CO, O2, N2,을 얻도록 하였다.3 is a conceptual view showing a fuel reforming apparatus according to the present invention, the present invention is a reforming gas from air and fuel using a fuel reforming catalyst (Ni: K 2 O: Al 2 O 3 ) H 2 , CO 2 , CO, O 2 , N 2 , to obtain.

즉, 촉매를 이용하여 종래 수증기 개진법에서 요구된 각종 부가장치를 삭제한 것이다.In other words, by using the catalyst, various additional devices required by the conventional steam opening method are eliminated.

이를 위한 본 발명에는 상기 연료개진촉매(Ni : K2O : Al2O3)가 연소된 가스를 개질가스로 분리하므로, 연료와 공기의 혼합기를 영성할 장치와 이러한 혼합기를 합성할 장치가 필요하게 된다.To this end, the present invention separates the burned gas into the reformed gas by the fuel propagation catalyst (Ni: K 2 O: Al 2 O 3 ), so that a device for producing a fuel and air mixer and a device for synthesizing the mixer are required. Done.

따라서, 케이스(20)를 형성하여 연료와 공기르 혼합하도록 하였고, 그 내측에 연소를 위한 글로우 플러그(22)와 촉매반응을 위한 연료개진촉매블럭(24)이 설치되어 있다.Therefore, the case 20 is formed to mix the fuel and the air, and the glow plug 22 for combustion and the fuel propagation catalyst block 24 for the catalytic reaction are installed inside the case 20.

또한, 상기 연료는 연료가스로 공급되어야 공기와의 혼합기가 되고, 공기 역시 일정온도 이상을 유지하여야 혼합기 형성 및 글로우 플러그(22)로 부터의 용이한 연소가 수행되므로, 케이스(20)를 위시하여 입구측에 혼합실(26)과 토출구측에 열교환기(28)가 설치되고, 연료증발기(38) 및 흡기 가열장치(34)가 설치되어 있다.In addition, the fuel is supplied to the fuel gas to be a mixer with the air, the air also needs to maintain a certain temperature or more, since the mixing and the easy combustion from the glow plug 22 is carried out, including the case 20 The heat exchanger 28 is provided in the mixing chamber 26 and the discharge port side at the inlet side, and the fuel evaporator 38 and the intake heating device 34 are provided.

상기 열교환기(28)는 단열을 위해 세라믹외벽으로 열교환실을 구성하며 다관 대류식으로 흡기파이프(32)가 연결되어 컴프레셔로 부터 송압된 공기가 1 차 승온되며, 상기 흡기파이프(32)에는 흡기가열장치(34)가 설치되어 2 차 승온된 후 혼합실(26)로 유도되도록 되어 있다.The heat exchanger 28 constitutes a heat exchange chamber with a ceramic outer wall for thermal insulation, and the intake pipe 32 is connected in a multi-tube convection manner so that the air blown from the compressor is first warmed up, and the intake pipe 32 is intake air. The heating device 34 is installed to be led to the mixing chamber 26 after the second temperature is raised.

여기서, 상기 별도로 설치될 필요는 없고, 기존의 시동보조용 흡기예열장치를 이용하면 된다.Here, it does not need to be separately installed, but may use an existing start auxiliary air intake preheater.

한편, 이러한 가열된 흡기와 더불어 혼합실(26)에 연료가스가 공급되어야 하며, 이를 위해 케이스(20) 내측에 설치된 연료개진촉매블럭(24)에 코일파이프(42)가 권취되고 이러한 코일파이프(42)의 토출구측이 연장되어 혼합실(26)에 연결되어 있다.On the other hand, fuel gas must be supplied to the mixing chamber 26 together with the heated intake, and for this purpose, the coil pipe 42 is wound around the fuel propagation catalyst block 24 installed inside the case 20, and the coil pipe ( The discharge port side of 42 is extended and connected to the mixing chamber 26.

이와 더불어 연료증발기(38)에 연료공급파이프(36)가 연결되고 혼합실(26)을 관통하여 케이스(20)의 입구와 연결되므로써, 상기 혼합실(26)에서의 혼합기에 증발된 연료가스가 다시 혼합되도록 되어 있다.In addition, since the fuel supply pipe 36 is connected to the fuel evaporator 38 and is connected to the inlet of the case 20 through the mixing chamber 26, the fuel gas evaporated in the mixer in the mixing chamber 26 is It is supposed to mix again.

여기서, 상기 연료증발기(38) 및 코일파이프(42)는 연료펌프(40)와 연결되어 연료를 공급받으며 각 유로에 컨트롤 유니트의 제어를 받는 밸브(44)가 설치되어 있다.Here, the fuel evaporator 38 and the coil pipe 42 are connected to the fuel pump 40 to receive fuel and are provided with a valve 44 to control the control unit in each flow path.

상기 혼합실(26)과 케이스(20) 입구에서 생성된 혼합기는 케이스(20) 내측을 따라 흐르면서 글로우 플러그(22)에 의해 혼합기가 연소되며, 뒤이어 연소된 가스가 연료개진촉매블럭을 통과하면서 화학반응되어 개질가스가 형성된다.The mixer produced at the inlet of the mixing chamber 26 and the case 20 flows along the inside of the case 20, and the mixer is burned by the glow plug 22, and then the burned gas passes through the fuel propagation catalyst block. Reaction forms reformed gas.

상술된 바와 같이 본 발명에 따르면 케이스 내에 연료개질촉매(Ni : K2O : Al2O3)와 글로우 플러그가 내장되어 케이스의 입구에 무화된 연료와 에열된 공기를 혼합 흡입시켜 글로우 플러그를 통해 혼합기를 연소시키고, 연소된 혼합기가 연료개질촉매를 거쳐 개질가스로 변환되도록 하므로써, 종래 수증기 개질법에서와 같은 각종 부가장치가 삭제되어 실제 차량에 상기 질소산화물 처리장치에 응용되는 효과가 있다.As described above, according to the present invention, a fuel reforming catalyst (Ni: K 2 O: Al 2 O 3 ) and a glow plug are built in the case to mix and suck the atomized fuel and the heated air at the inlet of the case. By combusting the mixer and allowing the combusted mixer to be converted into reformed gas via a fuel reforming catalyst, various additional devices as in the conventional steam reforming method are eliminated, so that the apparatus can be applied to the nitrogen oxide treatment apparatus in an actual vehicle.

Claims (1)

혼합기와 연료개질촉매가 반응되도록 케이스(20)가 형성되어 그 내측에 혼합기를 연소하는 글로우 플러그(22)와 연소된 가스를 반응시키는 연료개질촉매(Ni : K2O : Al2O3)블럭(24)이 설치되고, 상기 케이스(20)의 입구측에 혼합실(26)과 토출구측에 열교환기(28)가 설치되는 한편, 상기 열교환기(28)의 외주를 따라 컴프레셔(30)와 연결되는 흡기파이프(32)가 설치되고 흡기파이프(32)에는 가열장치(34)가 설치되어 상기 혼합실(26)에 연결됨과 더불어, 연료공급파이프(36)가 혼합실(26)을 관통하여 케이스(20)의 입구와 연결되고, 상기 연료공급파이프(36)는 연료증발기(38)와 연결되며, 연료증발기(38)는 연료펌프(40)와 연결됨과 동시에, 상기 연료개질촉매블럭(24)에 코일파이프(42)가 권취되어 그 흡입부는 연료펌프(40)와 연결되고 토출부는 상기 혼합실(26)에 연결된 구조인 디젤엔진 질소산화물 처리장치의 연료개질장치.A case 20 is formed so that the mixer and the fuel reforming catalyst react with each other, and a fuel reforming catalyst (Ni: K 2 O: Al 2 O 3 ) block for reacting the glow plug 22 and the combusted gas to combust the mixer therein. 24 is provided, the mixing chamber 26 and the heat exchanger 28 are provided on the inlet side of the case 20, while the compressor 30 and the outer circumference of the heat exchanger 28 are provided. The intake pipe 32 is connected and the intake pipe 32 is provided with a heating device 34 is connected to the mixing chamber 26, the fuel supply pipe 36 passes through the mixing chamber 26 It is connected to the inlet of the case 20, the fuel supply pipe 36 is connected to the fuel evaporator 38, the fuel evaporator 38 is connected to the fuel pump 40, at the same time, the fuel reforming catalyst block 24 ) Coil pipe 42 is wound around the suction pipe is connected to the fuel pump 40, the discharge portion is connected to the mixing chamber 26 Fuel reformer for joining diesel engine nitrogen oxide treatment equipment.
KR1019970007591A 1997-03-07 1997-03-07 Nox treatment device of diesel engine KR100245500B1 (en)

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