KR20200071532A - An apparatus for reducing nitrogen oxide - Google Patents

An apparatus for reducing nitrogen oxide Download PDF

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KR20200071532A
KR20200071532A KR1020180159370A KR20180159370A KR20200071532A KR 20200071532 A KR20200071532 A KR 20200071532A KR 1020180159370 A KR1020180159370 A KR 1020180159370A KR 20180159370 A KR20180159370 A KR 20180159370A KR 20200071532 A KR20200071532 A KR 20200071532A
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exhaust gas
reducing agent
inlet
housing
reaction member
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KR102232267B1 (en
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이충희
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(유)태신
이충희
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    • 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
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • 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
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B01F5/0057—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea

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  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The present invention relates to an apparatus for reducing a nitrogen oxide, and more particularly, to an apparatus for reducing a nitrogen oxide, in which a mixing space in which a reduction agent and exhaust gas are mixed is formed, and a reaction part for performing denitrification from exhaust gas and a noise reducing member for reducing noise are formed in one space, whereby space efficiency is improved. According to the apparatus for reducing a nitrogen oxide according to the present invention, a mixing space in which a reduction agent and exhaust gas are mixed is formed in a housing in which a separation reaction member is accommodated, and a noise reducing member for reducing noise of the exhaust gas, which is separated from the separation reaction member, is located between the separation reaction member and an outlet of the housing, whereby separation efficiency becomes higher and space can be easily secured.

Description

질소산화물 저감장치{An apparatus for reducing nitrogen oxide}An apparatus for reducing nitrogen oxide

본 발명은 질소산화물 저감장치에 관한 것으로서, 더욱 상세하게는 환원제와 배기가스가 혼합되는 혼합공간이 형성되며 배기가스가 탈질되는 반응부와 소음이 감소되는 소음저감부재가 한 공간 내에 위치되어 공간효율이 향상된 질소산화물 저감장치에 관한 것이다.The present invention relates to an apparatus for reducing nitrogen oxides, and more specifically, a mixing space in which a reducing agent and an exhaust gas are mixed is formed, and a reaction unit for denitrifying the exhaust gas and a noise reduction member for reducing noise are located in one space, resulting in space efficiency. It relates to an improved nitrogen oxide reduction device.

화석연료를 에너지원으로 사용하는 화력발전소 및 선박 등의 엔진에서 배출하는 배기가스에는 다량의 질소산화물(NOx)이 포함되어 있는데, 상기 질소산화물은 산성비 및 호흡기 질환의 원인물질로 알려져 있다. 따라서, 배기가스에 포함된 질소산화물을 제거하기 위한 다양한 기술이 개발되고 있다. 또한, 엔진 자체에서 발생하는 엔진 작동 소음과 배기가스에 의해 발생하는 유동 소음이 배기가스와 함께 외부 환경으로 바로 배출되는 경우에는 주변환경을 파괴하고 민원의 대상이 되므로, 엔진 작동 소음 및 배기가스에 의해 발생하는 소음을 저감하기 위한 기술이 개발되고 있다.Exhaust gas emitted from engines such as thermal power plants and ships that use fossil fuel as an energy source contains a large amount of nitrogen oxides (NOx), which are known as causative agents of acid rain and respiratory diseases. Accordingly, various techniques for removing nitrogen oxides contained in exhaust gas have been developed. In addition, when the engine operating noise generated by the engine itself and the flow noise generated by the exhaust gas are directly discharged to the external environment together with the exhaust gas, the surrounding environment is destroyed and subject to complaints. Technology for reducing noise generated by the technology has been developed.

질소산화물과 소음의 저감을 위해서 가장 널리 사용되는 소음기와 선택적 환원촉매법(SCR)을 이용한 배기가스 탈질시스템이 이용된다.To reduce nitrogen oxides and noise, the most widely used silencer and exhaust gas denitrification system using selective reduction catalyst (SCR) are used.

선택적 환원촉매법(SCR)은 질소산화물(NOX)과 암모니아(NH3)의 반응을 이용한 기술로써 요소(UREA)를 SCR촉매에 분사하여 열/가수분해 작용에 의해 암모니아로 변환된다. 변환된 암모니아(NH3)와 질소산화물이 SCR 촉매에서 화학반응을 하여 환경과 인간에 무해한 물과 질소로 변환된다. The selective reduction catalyst method (SCR) is a technique using a reaction of nitrogen oxides (NO X ) and ammonia (NH 3 ), and is converted to ammonia by thermal/hydrolysis by spraying urea (UREA) onto the SCR catalyst. The converted ammonia (NH 3 ) and nitrogen oxides are chemically reacted in the SCR catalyst to be converted into water and nitrogen, which are harmless to the environment and humans.

선택적 환원촉매법(SCR)을 이용한 종래의 배기가스 탈질시스템을 살펴보면, 엔진으로부터 배출된 배기가스가 먼저 소음기를 통과하여 소음이 저감되고, 소음이 저감된 배기가스는 반응 챔버에 유입되어 환원제공급부에 의해 공급된 환원제와 혼합되며, 환원제와 혼합된 배기가스는 반응기에 유입되어 촉매의 의해 탈질반응이 일어나 배기가스의 질소산화물이 제거되게 된다.Looking at the conventional exhaust gas denitrification system using the selective reduction catalyst method (SCR), the exhaust gas discharged from the engine first passes through the silencer to reduce noise, and the reduced exhaust gas flows into the reaction chamber to reducer supply. It is mixed with the reducing agent supplied by, and the exhaust gas mixed with the reducing agent flows into the reactor to denitrify by the catalyst, thereby removing nitrogen oxides from the exhaust gas.

이러한, 배기가스 탈질시스템은 엔진 작동 소음 및 배기가스에 의해 발생된 소음의 저감이 소음기에 의해서만 이루어지게 되어 소음저감 효율을 높이기 위해서 상기 소음기를 크게 제작하므로 배기가스 시스템 전체의 설비가 대형화 될 수 밖에 없는 문제점이 있다.In this exhaust gas denitrification system, the engine operation noise and the noise generated by the exhaust gas are reduced only by the silencer, so the silencer is made large to increase the noise reduction efficiency, so the entire facility of the exhaust gas system must be enlarged. There is no problem.

또한, 촉매에 의한 탈질반응은 400도 내외의 고온과 고압에서 탈질반응이 가장 잘 일어나는데 소음기를 통과하여 소음이 저감된 배기가스가 반응챔버, 반응기를 차례로 통과하여 탈질반응이 일어나므로, 상기 소음기를 통과하여 온도와 압력이 떨어진 배기가스가 탈질되게 되어 탈질효율이 떨어지는 문제점이 있다. 그리고, 소음기를 통과하면서 배기가스는 큰 압력강하가 생겨 배기가스의 배출을 위해서 엔진의 출력을 높이게 되므로, 연료의 소모량이 많아지고 엔진의 효율이 떨어지는 문제점이 있다.In addition, the denitrification reaction by the catalyst is most likely denitrification reaction at a high temperature and a high temperature of about 400 degrees, and the exhaust gas with reduced noise passing through the silencer passes through the reaction chamber and the reactor in turn, so that the denitrification reaction occurs. There is a problem in that denitrification efficiency is lowered because the exhaust gas having passed through and the temperature and pressure has been denitrified. In addition, as the exhaust gas passes through the silencer, a large pressure drop occurs to increase the output of the engine to discharge the exhaust gas, so there is a problem that the consumption of fuel increases and the efficiency of the engine decreases.

이러한 문제점을 해결하기 위하여, 대한민국 등록특허공보 제10-1198968호에는 반응기 이후에 소음기가 위치되어 탈질효율을 높이며, 소음기와 반응기가 일체화되어 공간효율이 향상된 소음감쇄 구조를 갖는 배기가스 탈질시스템이 개시되어 있다. In order to solve this problem, Korean Patent Registration No. 10-1198968 discloses an exhaust gas denitrification system having a noise damping structure in which a silencer is positioned after the reactor to increase the denitrification efficiency, and the silencer and the reactor are integrated to improve space efficiency. It is.

하지만, 배기가스 탈질시스템 전에 환원제가 공급되어 배기가스와 혼합되는 혼합챔버가 별도로 마련되어야 하므로 공간효율이 떨어지며, 반응기에서 배기가스가 유입되는 측의 입구가 좁아 반응이 일어나는 촉매필터부 측으로 배기가스가 가장자리보다 중심측으로 집중되므로 촉매필터부의 전 영역에서 균일한 반응을 기대하기는 어렵다.However, since a reducing agent is supplied before the exhaust gas denitrification system and a mixing chamber to be mixed with the exhaust gas must be separately provided, space efficiency decreases, and the inlet on the side where the exhaust gas is introduced from the reactor is narrow, so that the exhaust gas is directed to the catalyst filter unit where the reaction occurs. Since it is concentrated toward the center rather than the edge, it is difficult to expect a uniform reaction in all areas of the catalytic filter unit.

대한민국 등록특허공보 제10-198968호 : 소음감쇄 구조를 갖는 배기가스 탈질 시스템.Republic of Korea Patent Registration No. 10-198968: Exhaust gas denitrification system having a noise damping structure. 대한민국 등록특허공보 제10-1381827호 : 배기가스 탈질 반응기 및 이를 이용하는 배기가스 탈질시스템Republic of Korea Patent Registration No. 10-1381827: exhaust gas denitrification reactor and exhaust gas denitrification system using the same

본 발명은 상기와 같은 문제점을 해결하기 위해 고안된 것으로서, 환원제와 배기가스가 혼합되는 혼합공간이 내부에 함께 형성되며 혼합공간을 통과한 환원제가 혼합된 배기가스가 탈질되는 반응부와, 탈질된 배기가스의 소음 저감을 위한 소음저감부가 일체화되어 공간효율이 향상된 질소산화물 저감장치를 제공하고자 한다.The present invention is designed to solve the above problems, a mixing space in which a reducing agent and exhaust gas are mixed together is formed therein, and a reaction unit in which the exhaust gas mixed with the reducing agent passing through the mixing space is denitrated, and the denitrated exhaust It is an object of the present invention to provide a nitrogen oxide reduction device having improved space efficiency by integrating a noise reduction unit for reducing noise of gas.

상기와 같은 목적을 달성하기 위한 질소산화물 저감장치는 내부공간이 형성되며 상기 내부공간과 연통되는 유입구와 배출구가 형성된 하우징과; 상기 하우징 내에 수용되되 상기 유입구를 통해 유입되는 환원제와 배기가스가 혼합되는 혼합공간이 형성되게 상기 유입구에 대해 이격되는 위치에 수용되며 상기 혼합공간에서 상기 환원제와 혼합된 상기 배기가스가 통과하면서 탈질되게 촉매가 코팅되는 다수의 관통공이 형성된 탈질반응부재와; 상기 배출구와 상기 탈질반응부재 사이에 위치되어 상기 탈질반응부재를 통과하여 탈질 처리된 상기 배기가스로부터 발생되는 소음을 저감하는 소음저감부재와; 상기 혼합공간 내에 위치되어 상기 배기가스의 이동경로를 연장하면서 상기 환원제와 상기 배기가스의 혼합을 유도하며 상기 탈질반응부재로 이동되는 상기 환원제가 혼합된 상기 배기가스가 상기 탈질반응부재의 중심측에 집중되지 않고 상기 탈질반응부재의 가장자리 측으로도 분산될 수 있도록 유도하는 혼합촉진유도부재와; 상기 유입구 내로 관통되며 단부에 상기 혼합촉진유도부재 방향으로 상기 환원제를 분사하는 분사노즐이 장착된 환원제공급부를 구비하는 것을 특징으로 한다.Nitrogen oxide reduction device for achieving the above object is an inner space is formed and the housing is formed with an inlet and an outlet that communicates with the inner space; It is accommodated in the housing but is accommodated in a position spaced apart from the inlet to form a mixing space in which a reducing agent and exhaust gas flowing through the inlet are formed, and in the mixing space, the exhaust gas mixed with the reducing agent passes through the denitrification. A denitrification reaction member having a plurality of through holes coated with a catalyst; A noise reduction member positioned between the outlet and the denitrification reaction member to pass through the denitrification reaction member to reduce noise generated from the denitration-treated exhaust gas; Located in the mixing space, while extending the movement path of the exhaust gas to induce mixing of the reducing agent and the exhaust gas, the exhaust gas in which the reducing agent is moved to the denitrification reaction member is mixed and the exhaust gas is mixed to the center side of the denitration reaction member. A mixing-promoting inducing member that is not concentrated and induces to be distributed to the edge of the denitrification reaction member; It is characterized in that it is provided with a reducing agent supply unit that is penetrated into the inlet and is equipped with an injection nozzle for spraying the reducing agent in the direction of the mixing-promoting inducing member at an end.

상기 혼합촉진유도부재는 상기 유입구와 상기 탈질반응부재 사이에 위치되며 상기 유입구을 향하는 일면이 상기 유입구의 연장방향에 직교하는 방향으로 연장된 평면으로 형성되어 상기 유입구로 유입된 상기 환원제와 상기 배기가스를 상기 하우징의 가장자리 측으로 유도하면서 상기 환원제와 상기 배기가스의 이동경로를 연장하는 분산부과, 상기 유입구와 마주하는 상기 분산부의 일면의 가장자리에서 상기 분산부 방향으로 각각 연장되어 상기 하우징에 고정되며 상기 분산부에 의해 상기 하우징의 가장자리측으로 이동되는 상기 환원제와 상기 배기가스가 관통되는 관통공이 형성되게 상기 분산부의 원주방향으로 상호 이격되는 다수의 혼합유도리브를 구비한다.The mixing-promoting inducing member is located between the inlet and the denitrification reaction member, and one surface facing the inlet is formed in a plane extending in a direction orthogonal to the extending direction of the inlet to reduce the reducing agent and the exhaust gas introduced into the inlet. Dispersing part extending the path of the reducing agent and the exhaust gas while guiding to the edge of the housing, and extending in the direction of the dispersing part from the edge of one surface of the dispersing part facing the inlet and fixed to the housing respectively It is provided with a plurality of mixed induction ribs spaced apart from each other in the circumferential direction of the dispersing portion to form a through hole through which the reducing agent and the exhaust gas are moved to the edge of the housing.

다수의 상기 혼합유도리브는 상기 분산부의 일면에서 상기 하우징의 유입구 방향으로 돌출되되 상기 분산부의 중심측에서 방사방향으로 연장되는데, 상기 유입구에 인접할수록 상기 하우징의 중심측을 향하는 제1면이 상기 하우징의 내주면에 인접하게 상기 분산부의 중심측에서 방사방향으로 연장된 길이가 짧게 형성되며, 상기 유입구에서 상기 분산부의 일면을 향해 이동되는 환원제와 배기가스가 나선방향으로 회전되면서 이동되어 와류발생이 유도되도록 상기 분산부의 중심측에서 방사방향으로 시계 또는 반시계 동일방향으로 호형곡률을 갖도록 각각 연장되는 것이 바람직하다.A plurality of the mixed induction ribs protrude in the direction of the inlet of the housing on one surface of the dispersion portion, and extend radially from the center side of the dispersion portion, the first surface toward the center side of the housing being closer to the inlet portion of the housing A length extending in a radial direction from the center side of the dispersion portion is formed shortly adjacent to the inner circumferential surface of the reductant, and a reducing agent and exhaust gas moving toward the one surface of the dispersion portion at the inlet are moved while rotating in a spiral direction to induce vortex generation. It is preferable to extend each to have an arc curvature in the same direction clockwise or counterclockwise in the radial direction from the central side of the dispersion portion.

상기 분산부는 상기 유입구와 마주하는 일면에서 분산된 상기 환원제와 상기 배기가스가 상기 탈질반응부재로 이동시 상기 분산부와 상기 탈질반응부재 사이에 부압 형성을 줄이며 상기 탈질반응부재 중심측으로도 상기 환원제와 상기 배기가스가 이동 유도될 수 있도록 상기 탈질반응부재 방향으로 갈수록 외경이 감소되게 원뿔형상으로 형성될 수도 있다.The dispersing portion reduces formation of negative pressure between the dispersing portion and the denitrification reaction member when the reducing agent and the exhaust gas dispersed on one side facing the inlet port move to the denitrification reaction member, and the reducing agent and the central side of the denitrification reaction member It may be formed in a conical shape so that the outer diameter decreases toward the denitrification reaction member so that the exhaust gas can be induced to move.

또는, 상기 분산부는 상기 유입구에서 상기 탈질반응부재 방향으로 각각 관통 형성된 다수의 균일분산공을 구비하며, 다수의 상기 균일분산공은 상기 유입구와 마주하여 압력이 높은 상기 분산부의 중심측에서 가장자리 측으로 상기 환원제와 상기 배기가스가 분산될 수 있도록, 상기 분산부의 가장자리측에 인접하게 위치할수록 큰 직경으로 관통형성될 수도 있다.Alternatively, the dispersion portion has a plurality of uniform dispersion holes formed through the denitrification reaction member from the inlet, respectively, and the plurality of uniform dispersion holes face the inlet from the center side of the dispersion portion having high pressure to the edge side. In order to be able to disperse the reducing agent and the exhaust gas, it may be formed through a larger diameter as it is positioned closer to the edge of the dispersing portion.

본 발명의 질소산화물 저감장치는 탈질반응부재가 수용되는 하우징 내에 환원제와 배기가스가 혼합되는 혼합공간이 형성되며, 탈질반응부재에서 탈질 반응된 배기가스의 소음을 줄이기 위한 소음저감부재가 탈질반응부재와 하우징의 배출구 사이에 위치되어 있어 압력이 유지된 상태에서 탈질반응이 이루어지므로 탈질 효율이 높으며 설치를 위한 공간확보가 용이한 이점이 있다.In the nitrogen oxide reduction device of the present invention, a mixing space in which a reducing agent and exhaust gas are mixed is formed in a housing in which a denitrification reaction member is accommodated, and a noise reduction member for reducing noise of exhaust gas reacted with denitrification in the denitrification reaction member is a denitrification reaction member. Since it is located between the outlet of the housing and the denitrification reaction is performed while the pressure is maintained, the denitrification efficiency is high and the space for installation is easily secured.

또한, 본 발명의 질소산화물 저감장치는 혼합공간에 환원제와 배기가스의 이동경로를 연장하며 환원제와 배기가스의 혼합 촉진을 유도하는 혼합촉진유도부재가 설치되어 있어 하우징의 길이가 축소될 수 있어 공간효율이 향상될 수 있다. In addition, the nitrogen oxide reducing apparatus of the present invention is provided with a mixing accelerator inducing member that extends the movement path of the reducing agent and the exhaust gas in the mixing space and induces the mixing of the reducing agent and the exhaust gas, so that the length of the housing can be reduced. Efficiency can be improved.

도 1은 본 발명의 제1실시 예에 따른 질소산화물 저감장치에 대한 일부 단면 사시도이고,
도 2는 도 1의 질소산화물 저감장치에 대한 측단면도이고,
도 3은 도 1의 질소산화물 저감장치에 대한 평단면도이고,
도 4는 본 발명의 제2실시 예에 따른 질소산화물 저감장치에 대한 일부 측단면도이고,
도 5는 본 발명의 제3실시 예에 따른 질소산화물 저감장치에 대한 일부 측단면도이고,
도 6은 본 발명의 제4실시 예에 따른 질소산화물 저감장치에 대한 일부 측단면도이다.1 is a partial sectional perspective view of a nitrogen oxide reduction device according to a first embodiment of the present invention,
Figure 2 is a side cross-sectional view of the nitrogen oxide reduction device of Figure 1,
3 is a cross-sectional plan view of the nitrogen oxide reduction device of Figure 1,
4 is a partial side cross-sectional view of a nitrogen oxide reduction device according to a second embodiment of the present invention,
5 is a partial side cross-sectional view of a nitrogen oxide reduction device according to a third embodiment of the present invention,
6 is a partial cross-sectional view of a nitrogen oxide reduction device according to a fourth embodiment of the present invention.

이하, 첨부된 도면을 참고하여 본 발명의 바람직한 실시 예에 따른 질소산화물 저감장치를 상세하게 설명한다.Hereinafter, a nitrogen oxide reduction device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 3은 본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)가 도시되어 있다.1 to 3 is a nitrogen oxide reduction device 1 according to a first embodiment of the present invention.

본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)는 화석연료를 에너지원으로 사용하는 화력발전소 및 선박 등의 엔진에서 배출되는 배기가스 내의 질소산화물(NOx)을 저감하기 위한 것으로서, 하우징(10)과, 탈질반응부재(30)와, 소음저감부재(50)와, 환원제공급부(90)와, 혼합촉진 유도부재(70)를 구비한다.The nitrogen oxide reduction device 1 according to the first embodiment of the present invention is for reducing nitrogen oxides (NOx) in exhaust gas emitted from engines such as thermal power plants and ships using fossil fuel as an energy source, and a housing (10), a denitrification reaction member (30), a noise reduction member (50), a reducing agent supply unit (90), and a mixing promoting induction member (70) are provided.

하우징(10)은 일 방향으로 연장되며 내부공간을 갖는 사각 기둥형상으로 형성되며 길이방향의 양측에 내부공간과 연통되는 유입구(13)과 배출구(19)가 형성된다. 하우징(10)은 도시된 바와 다르게, 사각기둥형상 외의 다각 기둥형상이나, 원형기둥형상이 적용될 수 있을 것이다.The housing 10 is formed in a quadrangular column shape extending in one direction and having an internal space, and an inlet 13 and an outlet 19 communicating with the internal space are formed on both sides in the longitudinal direction. Unlike the illustrated housing 10, a polygonal column shape other than a square column shape or a circular column shape may be applied.

하우징(10)의 유입구(13)는 배기가스와 환원제가 유입되는 부분이며, 하우징(10)의 배출구(15)는 하우징(10)의 내부공간에서 탈질된 가스가 배출되는 부분이다. 하우징(10)의 유입구(13) 측에는 환원제를 공급하는 환원제공급부(90)가 설치되어, 유입구(13)를 통해 환원제와 배기가스가 후술되는 혼합공간(12)으로 함께 유입된다. The inlet 13 of the housing 10 is a portion into which exhaust gas and a reducing agent are introduced, and the outlet 15 of the housing 10 is a portion from which denitrified gas is discharged from the inner space of the housing 10. A reducing agent supply unit 90 for supplying a reducing agent is installed on the inlet 13 side of the housing 10, and the reducing agent and exhaust gas are introduced together through the inlet 13 into the mixing space 12 to be described later.

하우징(10)은 도 1 및 도 2에 도시된 바와 같이, 혼합촉진유도부재(70)가 위치되며 유입구(13)가 형성된 제1하우징부(11)와, 탈질반응부재(30)가 설치되는 제2하우징부(14)와, 소음저감부재(50)가 설치되며 배출구(15)가 형성된 제3하우징(17)를 구비한다1 and 2, the housing 10 is provided with a first housing part 11 having an inlet 13 and a denitrification reaction member 30 in which the mixing induction member 70 is located. A second housing portion 14 and a noise reduction member 50 are installed and a third housing 17 having a discharge port 15 is provided.

제1하우징부(11)와 제3하우징부(17) 사이에 위치되는 제2하우징부(14)는 길이방향 양측 단부에 제1하우징부(11)와 제3하우징부(17)와 결합을 위한 제2플렌지부(14a) 및 제3플렌지부(14b)가 각각 형성되어 있다. 제1하우징부(11)는 제2하우징부(14)의 제2플렌지부(14a)와 결합을 위한 제1플렌지부(11a)가 형성되어 있으며, 제3하우징부(17)는 제2하우징부(14)의 제3플렌지부(14b)와 결합을 위한 제4플렌지부(17a)가 형성되어 있다. 제1 내지 제3하우징부(11,14,17)는 볼트 및 너트를 통해 상호 결합될 수 있으나, 용접방식으로 상호 결합될 수도 있다. The second housing part 14 positioned between the first housing part 11 and the third housing part 17 is coupled to the first housing part 11 and the third housing part 17 at both ends in the longitudinal direction. A second flange portion 14a and a third flange portion 14b for forming are respectively formed. The first housing part 11 is formed with a first flange part 11a for coupling with the second flange part 14a of the second housing part 14, and the third housing part 17 has a second housing part. A fourth flange portion 17a for coupling with the third flange portion 14b of the portion 14 is formed. The first to third housing parts 11, 14 and 17 may be mutually coupled through bolts and nuts, but may also be mutually coupled by a welding method.

그리고, 제1하우징부(11)는 유입구(13)의 직경보다 큰 폭을 갖도록 형성되며, 유입구(13)가 형성된 내주면에서 배출구(16) 방향으로 연장되되 제1하우징부(11)의 길이방향에 나란한 내주면에 접하도록 경사지게 연장되어 가스 확산을 유도하는 가스확산가이드판(25)이 유입구(13) 둘레에 위치되게 장착된다.Then, the first housing portion 11 is formed to have a width greater than the diameter of the inlet 13, extends in the direction of the outlet 16 from the inner circumferential surface where the inlet 13 is formed, but in the longitudinal direction of the first housing 11 The gas diffusion guide plate 25 extending inclined to contact the inner circumferential surface parallel to the gas diffusion is mounted to be positioned around the inlet 13.

환원제공급부(90)는 유입구(13) 내로 관통되며 단부에 배출구(15) 방향, 즉 혼합촉진유도부재(70) 방향으로 환원제를 분사하는 분사노즐(93)이 장착된 환원제공급관(91)과, 환원제공급관(91)으로 공급되는 환원제가 저장되는 환원제 저장탱크(미도시)와, 환원제 저장탱크(미도시)에 저장돤 환원제를 환원제공급관(91)을 통해 하우징(10)의 유입구(13) 측으로 공급하기 위한 환원제 공급펌프(미도시)와, 환원제공급관(91) 내로 관통되어 환원제 공급관(91)으로 공기가 이동되는 유로를 형성하는 공기공급관(96)과, 공기공급관(96)으로 공기를 공급하기 위한 컴프레셔(미도시)를 구비한다.The reducing agent supply unit 90 penetrates into the inlet 13, and at the end thereof, a reducing agent supply pipe 91 equipped with an injection nozzle 93 for spraying a reducing agent in the direction of the outlet 15, that is, the mixing promoting induction member 70, The reducing agent storage tank (not shown) in which the reducing agent supplied to the reducing agent supply pipe 91 is stored, and the reducing agent stored in the reducing agent storage tank (not shown) through the reducing agent supply pipe 91 to the inlet 13 of the housing 10 A reducing agent supply pump (not shown) for supplying, an air supply pipe 96 penetrating into the reducing agent supply pipe 91 to form a flow path through which the air moves to the reducing agent supply pipe 91, and supplying air to the air supply pipe 96 A compressor (not shown) is provided for the purpose.

환원제 저장탱크에 저장되는 환원제는 요소수(UREA Solution)가 적용된다. 환원제유입구(13) 내로 분사된 환원제인 요소수는 유입구(13)로 유입된 고온의 배기가스와 혼합되어 배기가스를 통해 열을 공급받아 기상의 암모니아로 변환되고, 암모니아와 배기가스가 혼합된 혼합가스가 탈질반응부재(30)가 장착된 제2하우징부(14)로 공급된다.Reducing agent The reducing agent stored in the storage tank is urea solution. The urea water, which is the reducing agent injected into the reducing agent inlet 13, is mixed with the high-temperature exhaust gas flowing into the inlet 13, supplied with heat through the exhaust gas, converted into gaseous ammonia, and mixed with ammonia and exhaust gas. Gas is supplied to the second housing portion 14 on which the denitrification reaction member 30 is mounted.

xH2O + CO(NH2)2 → 2NH3 + CO2 + (x-1)H2OxH 2 O + CO(NH 2 ) 2 → 2NH 3 + CO 2 + (x-1)H 2 O

환원제와 배기가스가 균일하게 혼합되기 위해서는 반드시 일정길이 이상의 공간과 시간을 필요로 한다. 혼합촉진유도부재(70)는 유입구(13)와 탈질반응부재(30) 사이에 위치되어 환원제와 배기가스의 이동경로를 연장하면서, 이동시 와류 발생을 유도하고 탈질반응부재로(30)의 균일분산을 유도하여 환원제와 배기가스가 짧은 시간 내에 혼합될 수 있도록 유도한다.In order for the reducing agent and the exhaust gas to be uniformly mixed, space and time over a certain length are required. The mixing promoting induction member 70 is located between the inlet 13 and the denitrification reaction member 30 to extend the movement path of the reducing agent and the exhaust gas, while inducing vortex generation during movement and uniformly dispersing the denitrification reaction member 30 Is induced so that the reducing agent and the exhaust gas can be mixed within a short time.

혼합촉진유도부재(70)는 후술되는 탈질반응부재(30)로 이동되는 상기 환원제와 배기가스 혼합된 혼합가스가 탈질반응부재(30)의 중심측에 집중되지 않고 탈질반응부재(30)의 가장자리 측으로도 분산될 수 있도록 분산부(71)와, 다수의 혼합유도리브(76)를 구비한다.The mixing promotion inducing member 70 is the edge of the denitrification reaction member 30 without the mixed gas mixed with the reducing agent and the exhaust gas being moved to the denitrification reaction member 30, which will be described later, is not concentrated at the center side of the denitrification reaction member 30. The dispersion unit 71 and a plurality of mixing induction ribs 76 are provided to be distributed to the side.

분산부(71)는 원판으로 형성되며 직경 방향이 하우징(10)의 길이방향에 교차하게 위치된다. 분산부(71)는 유입구(13)을 향하는 일면이 유입구(13)의 연장방향에 직교하는 방향으로 연장된 평면으로 형성되어 유입구(13)로 유입된 환원제와 배기가스를 하우징(10)의 폭 방향 가장자리 측으로 유도하면서 환원제와 배기가스의 이동경로를 연장한다.The dispersing portion 71 is formed of a disc, and the radial direction is positioned to intersect the longitudinal direction of the housing 10. The dispersing part 71 is formed in a plane extending in a direction orthogonal to the extending direction of the inlet 13 so that one surface facing the inlet 13 is provided with the reducing agent and the exhaust gas flowing into the inlet 13 and the width of the housing 10 The path of the reducing agent and the exhaust gas is extended while guiding toward the edge of the direction.

다수의 혼합유도리브(76)는 유입구(13)와 마주하는 분산부(91)의 일면의 가장자리에서 유입구(13) 방향으로 각각 연장되어 가스확산유도판(25)에 접하여 제1하우징부(11)에 고정되며, 분산부(71)의 원주방향으로 상호 이격되어 분산부(71)에 의해 제1하우징부(11)의 가장자리 측으로 환원제와 배기가스가 관통이동되게 혼합유도공(73)을 형성한다.A plurality of mixed induction ribs 76 are respectively extended in the direction of the inlet 13 from the edge of one surface of the dispersing portion 91 facing the inlet 13 to contact the gas diffusion inducing plate 25 to the first housing portion 11 ), and spaced apart from each other in the circumferential direction of the dispersing portion 71 to form a mixed induction hole 73 so that the reducing agent and the exhaust gas are moved through the edge of the first housing portion 11 by the dispersing portion 71. .

다수의 혼합유도리브(76)는 분산부(91)의 일면에서 하우징(10)의 유입구(13) 방향으로 돌출되되 분산부(71)의 중심측에서 방사방향으로 연장되는데, 유입구(13)에 인접할수록 제1하우징(11)의 중심측을 향하는 제1면(76a)이 제1하우징(11)의 내주면에 인접하게 분산부(71)의 중심측에서 방사방향으로 연장된 길이가 짧게 형성된다.The plurality of mixing induction ribs 76 protrude in the direction of the inlet 13 of the housing 10 on one surface of the dispersing portion 91, but extend radially from the central side of the dispersing portion 71, to the inlet 13 The closer the first surface 76a toward the center side of the first housing 11 is, the shorter the length extending radially from the center side of the dispersing portion 71 is adjacent to the inner circumferential surface of the first housing 11. .

그리고, 다수의 혼합유도리브(76)는 유입구(13)에서 분산부(71)의 일면을 향해 이동되는 환원제와 배기가스가 나선방향으로 회전되면서 이동되어 와류발생이 유도되도록, 분산부(71)의 중심측에서 방사방향으로 시계 또는 반시계 동일방향으로 호형곡률을 갖도록 각각 연장된다.In addition, the plurality of mixing induction ribs 76 are moved so that the reducing agent and the exhaust gas moving toward one surface of the dispersing portion 71 from the inlet 13 are rotated in a spiral direction, so that vortex generation is induced, so that the dispersing portion 71 It extends so as to have an arc curvature in the same direction clockwise or counterclockwise in the radial direction from the central side of.

탈질반응부재(30)는 하우징(10) 내에 수용되는데 유입구(13)에 대해 이격된 하우징(10)의 중심측에 위치되게 제2하우징부(14)에 설치된다. 이에 따라, 하우징(10)의 제1하우징부(11) 내에는 유입구(13)와 탈질반응부재(30) 사이에 유입구(13)를 통해 유입되는 환원제와 배기가스가 혼합되는 혼합공간(12)이 형성된다.The denitrification reaction member 30 is accommodated in the housing 10 and is installed in the second housing portion 14 to be located at the center of the housing 10 spaced apart from the inlet 13. Accordingly, in the first housing portion 11 of the housing 10, a mixing space 12 in which a reducing agent and an exhaust gas flowing through the inlet 13 are mixed between the inlet 13 and the denitrification reaction member 30 is mixed. It is formed.

탈질반응부재(30)는 사각기둥형상으로 형성되는데, 수평방향으로 동일간격 상호 이격된 다수의 수직판(32)과 상하방향으로 동일간격 상호 이격된 다수의 수평판(34)이 교차연결되어, 하우징(10)의 유입구(13)에서 배출구(15) 방향으로 관통형성된 다수의 관통공(31)이 정방 형태로 배열된다.The denitrification reaction member 30 is formed in a quadrangular column shape, and a plurality of vertical plates 32 spaced apart from each other in the horizontal direction and a plurality of horizontal plates 34 spaced apart from each other in the vertical direction are cross-connected. A plurality of through holes 31 formed in the direction of the outlet 15 from the inlet 13 of the housing 10 are arranged in a square shape.

탈질반응부재(30)는 다수의 관통공(31)을 형성하는 수직판(32)과 수평판(34)에 촉매가 코팅되어, 하우징(10) 내로 유입되어 환원제와 배기가스가 혼합된 혼합가스가 통과되면서 혼합가스에 포함되어 있는 질소산화물(NOx)이 촉매와의 탈질반응을 통해 질소로 변환시킨다.The denitrification reaction member 30 is a mixed gas in which a catalyst is coated on a vertical plate 32 and a horizontal plate 34 forming a plurality of through-holes 31, introduced into the housing 10, and a mixture of a reducing agent and exhaust gas. As it passes, nitrogen oxide (NOx) contained in the mixed gas is converted to nitrogen through a denitrification reaction with the catalyst.

즉, 혼합공간(12)에서 환원제와 배기가스가 혼합된 혼합가스 중 질소산화물은 촉매의 작용에 의해 아래의 화학반응식과 같은 반응을 통해 무해한 성분으로 변환된다. That is, nitrogen oxides in the mixed gas in which the reducing agent and the exhaust gas are mixed in the mixing space 12 are converted into harmless components through reactions such as the following chemical reaction formula by the action of the catalyst.

4NO + NH3 + O2 → 4N2 + 6H2O 4NO + NH 3 + O 2 → 4N 2 + 6H 2 O

2NO + 4NH3 + O2 → 3N2 + 6H2O 2NO + 4NH 3 + O 2 → 3N 2 + 6H 2 O

이 때, 촉매로는 다양한 제품이 적용될 수 있는데, 바나듐(V), 로듐(Rh), Mo(몰리브덴), W(텅스텐), 구리(Cu), 니켈(Ni), 철(Fe), 크롬(Cr), 망간(Mn), Sn(주석) 등의 산화물, 황산염, 희토류산화물, 귀금속 등을 촉매 활성종으로 하고, Al203, Ti02, 활성탄, 제올라이트, 실리카 등을 촉매담체로 하는 제품이 사용될 수 있으며, 이들 중 현재 실용화되어 있는 것은 Ti02(titanium oxide)를 담체로 한 V205(vanadium pentoxide), Mo03(molybdenum troxide), W03(tungsten trioxide)계의 촉매이다.At this time, various products can be applied as a catalyst, vanadium (V), rhodium (Rh), Mo (molybdenum), W (tungsten), copper (Cu), nickel (Ni), iron (Fe), chromium ( Cr), manganese (Mn), Sn (tin) oxides, sulfates, rare earth oxides, precious metals, etc., are catalytically active species, and Al 2 0 3 , Ti0 2 , activated carbon, zeolite, silica, etc. are used as catalyst carriers. These can be used, and among them, currently used are catalysts of V 2 0 5 (vanadium pentoxide), Mo0 3 (molybdenum troxide), W0 3 (tungsten trioxide) based on Ti0 2 (titanium oxide) as a carrier.

소음저감부재(50)는 배출구(16)와 탈질반응부재(30) 사이에 위치되어 탈질반응부재를 통과하여 탈질 처리된 혼합가스로부터 발생되는 소음을 저감한다. 소음저감부재(50)는 제3하우징부(15)의 내주면을 따라 하우징(10)의 유입구(13)에서 배출구(15) 방향으로 일정두께로 연장형성된다. 소음저감부재는 제3하우징부(15)에 다수개가 수용되는데, 하우징(10)의 폭 방향으로 상호 이격되어 혼합가스가 이동되기 위핸 이동유로를 형성한다.The noise reduction member 50 is located between the outlet 16 and the denitrification reaction member 30 to reduce noise generated from the degassed mixed gas passing through the denitrification reaction member. The noise reduction member 50 is formed to extend from the inlet 13 of the housing 10 to the outlet 15 along the inner circumferential surface of the third housing 15 to a certain thickness. A plurality of noise reduction members are accommodated in the third housing portion 15, and are spaced apart from each other in the width direction of the housing 10 to form a movement path for moving the mixed gas.

소음저감부재(50)는 다양한 소재로 이루어질 수 있는데, 열에 강하고 소음 흡수효율이 좋은 미네랄울로 형성되는 것이 바람직하다.The noise reduction member 50 may be made of various materials, and is preferably formed of a mineral wool that is strong in heat and has good noise absorption efficiency.

한편, 하우징(10)은 제3하우징부(15)의 내주면에 이격되게 제3하우징부(15)의 중심측에 위치되며 내부에 소음저감부재(50)가 수용되는 소음저감부재하우징부(17)를 구비한다.On the other hand, the housing 10 is located on the central side of the third housing unit 15 to be spaced apart from the inner circumferential surface of the third housing unit 15 and the noise reduction member housing unit 17 in which the noise reduction member 50 is accommodated. ).

소음저감부재하우징부(17)는 제3하우징부(15)에 대해 이격되어 제3하우징부(15)와 함께 소음완충공간(21)을 형성한다.The noise reduction member housing portion 17 is spaced apart from the third housing portion 15 to form a noise buffering space 21 together with the third housing portion 15.

소음저감부재하우징(17)은 내주면이 제2하우징부(14)보다 작은 폭을 가져 제3하우징부(15)의 내주면에 대해 이격되며 소음저감부재(50)가 수용되는 소음저감부재수용부(18)와, 제2하우징부(14)의 내주면과 소음저감부재수용부(18)의 내주면이 연결되게 폭이 감소하여 탈질반응부재(30)를 통과한 혼합가스가 하우징의 중심측으로 포집하는 제1가스포집부(19)와, 소음저감부재수용부(18)의 내주면과 배출구(16)의 내주면이 연결되게 폭이 감소되어 소음저감부재(50)를 통과하여 소음이 감소된 혼합가스를 포집하는 제2가스포집부(20)를 구비한다.The noise reduction member housing 17 has an inner circumferential surface having a width smaller than that of the second housing part 14, and is spaced apart from the inner circumferential surface of the third housing part 15, and the noise reduction member accommodating part 50 is accommodated ( 18), the width is reduced so that the inner circumferential surface of the second housing portion 14 and the inner circumferential surface of the noise reduction member accommodating portion 18 are connected so that the mixed gas passing through the denitrification reaction member 30 is collected to the center side of the housing. (1) The width is reduced so that the inner circumferential surface of the gas collecting unit (19), the inner circumferential surface of the noise reduction member receiving portion (18) and the outlet (16) are connected, and the mixed gas with reduced noise is collected through the noise reduction member (50). It has a second gas collecting unit (20).

본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)는 탈질반응부재(30)가 수용되는 하우징(10) 내에 환원제와 배기가스가 혼합되는 혼합공간(12)이 형성되며, 탈질반응부재(30)에서 탈질 반응된 배기가스의 소음을 줄이기 위한 소음저감부재(50)가 탈질반응부재(30)와 하우징(10)의 배출구(16) 사이에 위치되어 있어 압력이 유지된 상태에서 탈질반응이 이루어지므로 탈질 효율이 높으며 설치를 위한 공간확보가 용이한 이점이 있다.In the nitrogen oxide reduction device 1 according to the first embodiment of the present invention, a mixing space 12 in which a reducing agent and exhaust gas are mixed is formed in a housing 10 in which a denitrification reaction member 30 is accommodated, and a denitrification reaction member The noise reduction member 50 for reducing the noise of the exhaust gas reacted with denitrification at 30 is located between the denitrification reaction member 30 and the outlet 16 of the housing 10 so that the denitrification reaction is performed while the pressure is maintained. Since this is made, there is an advantage of high denitrification efficiency and easy securing of space for installation.

또한, 본 발명의 제1실시 예에 따른 질소산화물 저감장치는 혼합공간(12)에 환원제와 배기가스의 이동경로를 연장하며 환원제와 배기가스의 혼합 촉진을 유도하는 혼합촉진유도부재(70)가 설치되어 있어 하우징(10)의 연장된 길이를 축소시킬 수 있으므로 공간효율이 향상될 수 있다. In addition, the nitrogen oxide reducing apparatus according to the first embodiment of the present invention extends the movement path of the reducing agent and the exhaust gas in the mixing space 12 and has a mixing promoting inducing member 70 that induces the mixing of the reducing agent and the exhaust gas. Since the installed length of the housing 10 can be reduced, space efficiency can be improved.

한편, 도 4에는 본 발명의 제2실시 예에 따른 질소산화물 저감장치(2)가 도시되어 있다. 앞서 도시한 도면에서와 동일 기능을 갖는 구성요소는 동일부호로 표기한다.Meanwhile, FIG. 4 shows a nitrogen oxide reduction device 2 according to a second embodiment of the present invention. Components having the same function as in the above-described drawings are denoted by the same reference numerals.

본 발명의 제2실시 예에 따른 질소산화물 저감장치(2)는 혼합촉진유도부재(170)를 제외하고 본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)의 구조와 동일하다.The nitrogen oxide reduction device 2 according to the second embodiment of the present invention is the same as the structure of the nitrogen oxide reduction device 1 according to the first embodiment of the present invention, except for the mixing promoting induction member 170.

혼합촉진유도부재(170)는 분산부(171)와, 다수의 혼합유도리브(76)를 구비한다.The mixing promoting induction member 170 includes a dispersing portion 171 and a plurality of mixing induction ribs 76.

분산부(171)는 탈질반응부재(50) 방향으로 갈수록 외경이 감소되게 원뿔형상으로 형성된다.The dispersing portion 171 is formed in a conical shape such that the outer diameter decreases toward the direction of the denitrification reaction member 50.

분산부(171)는 유입구(13)와 마주하는 일면에서 분산된 환원제와 배기가스가 혼합된 혼합가스가 탈질반응부재(50)로 이동시, 분산부(171)의 타측 즉, 분산부(171)의 중심측과 탈질반응부재(50) 사이에 부압 형성을 줄이며 혼합가스가 외주면을 타고 상기 탈질반응부재 중심측으로 이동유도한다.The dispersing part 171 is the other side of the dispersing part 171, that is, the dispersing part 171 when the mixed gas in which the reducing agent and the exhaust gas dispersed on one side facing the inlet 13 move to the denitrification reaction member 50 It reduces the formation of negative pressure between the center side of the denitrification reaction member 50 and induces the mixed gas to move to the center of the denitrification reaction member on the outer circumferential surface.

본 발명의 제2실시 예에 따른 질소산화물 저감장치(2)는 혼합촉진유도부재(170)의 분산부(171)가 탈질반응부재(50) 방향으로 외경이 감소되어 탈질반응부재 중심측으로 혼합가스가 이동 유도되므로 혼합가스 분산효율을 높이며 나아가서는 탈질반응이 균일하게 이루어져 탈질효율을 높일 수 있다.In the nitrogen oxide reducing apparatus 2 according to the second embodiment of the present invention, the outer diameter of the dispersion portion 171 of the mixing promotion inducing member 170 is reduced toward the denitrification reaction member 50, so that the mixed gas moves toward the center of the denitrification reaction member. Since the movement is induced, the mixing gas dispersion efficiency is increased, and further, the denitrification reaction is uniformly performed to increase the denitration efficiency.

한편, 도 5에는 본 발명의 제3실시 예에 따른 질소산화물 저감장치(3)가 도시되어 있다. 앞서 도시한 도면에서와 동일 기능을 갖는 구성요소는 동일부호로 표기한다.Meanwhile, FIG. 5 shows a nitrogen oxide reduction device 3 according to a third embodiment of the present invention. Components having the same function as in the above-described drawings are denoted by the same reference numerals.

본 발명의 제3실시 예에 따른 질소산화물 저감장치(3)는 혼합촉진유도부재(270)를 제외하고 본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)의 구조와 동일하다.The nitrogen oxide reduction device 3 according to the third embodiment of the present invention is the same as the structure of the nitrogen oxide reduction device 1 according to the first embodiment of the present invention, except for the mixing promoting induction member 270.

혼합촉진유도부재(270)는 분산부(271)와, 다수의 혼합유도리브(76)를 구비한다.The mixing promoting induction member 270 includes a dispersing portion 271 and a plurality of mixing induction ribs 76.

분산부(271)는 하우징의 길이방향에 직교하는 방향으로 직경을 갖는 원판형상으로 형성되며, 유입구(13)에서 탈질반응부재(50) 방향으로 각각 관통 형성된 다수의 균일분산공(272)을 구비한다.The dispersing portion 271 is formed in a disk shape having a diameter in a direction orthogonal to the longitudinal direction of the housing, and is provided with a plurality of uniform dispersion holes 272 formed through each in the direction of the denitrification reaction member 50 at the inlet 13 do.

다수의 상기 균일분산공은 유입구(13)와 마주하여 압력이 높은 분산부(271)의 중심측에서 가장자리 측으로 환원제와 배기가스가 분산될 수 있도록, 분산부(271)의 가장자리 측에 인접하게 위치할수록 큰 직경으로 관통형성된다.The plurality of uniform dispersion holes are located adjacent to the edge side of the dispersing portion 271 so that the reducing agent and the exhaust gas can be distributed from the center side of the dispersing portion 271 having a high pressure facing the inlet 13 to the edge side. The larger the diameter, the more the penetration is formed.

즉, 분산부(271)의 가장자리측에 위치한 균일분산공(271)보다 분산부에 중심측에 인접한 균일분산공(271)의 내경이 작게 관통형성된다.That is, the inner diameter of the uniform dispersion hole 271 adjacent to the central portion of the dispersion portion is smaller than that of the uniform dispersion hole 271 located on the edge side of the dispersion portion 271.

본 발명의 제2실시 예에 따른 질소산화물 저감장치(2)는 혼합촉진유도부재(270)의 분산부(271)에 외측으로 갈수록 관통된 직경이 큰 다수의 균일분산공에 의해 환원제와 배기가스가 가장 압력이 높은 분산부(271)의 중심측에서 가장자리로 균일하게 분산되어 통과유도되며 균일분산공 통과시 발생되는 와류에 의해 혼합이 촉진될 수 있다.The nitrogen oxide reduction device 2 according to the second embodiment of the present invention is a reducing agent and exhaust gas by a large number of uniform dispersion holes having a larger diameter penetrated toward the outside of the dispersion portion 271 of the mixing promoting induction member 270. A is distributed uniformly from the center side of the dispersing portion 271 with the highest pressure to the edge, leading to passage, and mixing can be promoted by vortex generated when passing through the uniform dispersion hole.

한편, 도 6에는 본 발명의 제4실시 예에 따른 질소산화물 저감장치(4)가 도시되어 있다. 앞서 도시한 도면에서와 동일 기능을 갖는 구성요소는 동일부호로 표기한다.Meanwhile, FIG. 6 shows a nitrogen oxide reduction device 4 according to a fourth embodiment of the present invention. Components having the same function as in the above-described drawings are denoted by the same reference numerals.

본 발명의 제4실시 예에 따른 질소산화물 저감장치(4)는 혼합촉진유도부재(370)를 제외하고 본 발명의 제1실시 예에 따른 질소산화물 저감장치(1)의 구조와 동일하다.The nitrogen oxide reduction device 4 according to the fourth embodiment of the present invention is the same as the structure of the nitrogen oxide reduction device 1 according to the first embodiment of the present invention, except for the mixing promoting induction member 370.

혼합촉진유도부재(370)는 분산부(371)와, 다수의 혼합유도리브(76)를 구비한다.The mixing-promoting induction member 370 includes a dispersing portion 371 and a plurality of mixing induction ribs 76.

분산부(371)는 내부가 관통되는 링 형상으로 형성되되 탈질반응부재(50) 방향으로 갈수록 외경 및 내경이 확장되게 형성된다. 이에 따라, 분산부(371)의 외주면을 향하는 환원제와 배기가스는 하우징(10)의 폭 방향 가장자리 측으로 이동유도되고, 분산부(371)의 내경확장공(372)를 통과하는 환원제와 배기가스는 일측에서 타측으로 갈수록 내경이 확장되는 내경확장공(372)에 의해 확산유도된다.The dispersing portion 371 is formed in a ring shape through which the inside passes, but is formed so that the outer diameter and the inner diameter are expanded toward the denitrification reaction member 50. Accordingly, the reducing agent and the exhaust gas toward the outer circumferential surface of the dispersion unit 371 is guided to move toward the edge of the housing 10 in the width direction, and the reducing agent and exhaust gas passing through the inner diameter expansion hole 372 of the dispersion unit 371 are Diffusion is induced by the inner diameter expansion hole 372, which expands from one side to the other.

혼합촉진유도부재(370)는 도 6에 도시된 바와 같이, 분산부(371)의 내경확장공(372)를 통과하는 환원제와 배기가스의 이동경로 확장 및 혼합을 유도하기 위해 분산부(371)의 내경확장공(372) 중심측에 위치되는 보조분산부(377)와, 보조분산부(377)를 지지하는 보조분산부지지바(375)를 더 구비할 수 있다.6, the mixing promoting inducing member 370 disperses 371 to induce expansion and mixing of the moving path of the reducing agent and the exhaust gas passing through the inner diameter expansion hole 372 of the dispersing portion 371. A secondary dispersion unit 377 and an auxiliary dispersion unit support bar 375 supporting the auxiliary dispersion unit 377 may be further provided at the center of the inner diameter expansion hole 372.

보조분산부(377)는 유입구(13)에서 배출구(16) 방향으로 연장된 원기둥 형상으로 형성되되 중심측에서 양측 단부로 갈수록 외경이 감소되게 형성된다. The auxiliary dispersion unit 377 is formed in a cylindrical shape extending from the inlet 13 to the outlet 16, but is formed to decrease in outer diameter from the center to both ends.

다수의 보조분산부지지바(375)는 분산부(371)의 내주면과 보조분산부의 외주면을 각각 연결하며 원주방향으로 동일간격 이격된다.The plurality of auxiliary dispersion unit support bars 375 connect the inner circumferential surface of the dispersion unit 371 and the outer circumferential surface of the auxiliary dispersion unit, respectively, and are spaced equally in the circumferential direction.

지금까지 본 발명에 따른 질소산화물 저감장치는 탈질반응부재(50)가 수용되는 하우징(10) 내에 환원제와 배기가스가 혼합되는 혼합공간(12)이 형성되며, 탈질반응부재(30)에서 탈질 반응된 배기가스의 소음을 줄이기 위한 소음저감부재(50)가 탈질반응부재(30)와 하우징(10)의 배출구(16) 사이에 위치되어 있어 압력이 유지된 상태에서 탈질반응이 이루어지므로 탈질 효율이 높으며 설치를 위한 공간확보가 용이한 이점이 있다.The nitrogen oxide reducing apparatus according to the present invention is a mixing space 12 in which a reducing agent and exhaust gas are mixed in a housing 10 in which a denitrification reaction member 50 is accommodated, and a denitrification reaction in the denitration reaction member 30 Since the noise reduction member 50 for reducing the noise of the exhaust gas is located between the denitrification reaction member 30 and the outlet 16 of the housing 10, the denitrification reaction is performed in a state where pressure is maintained, so that the denitrification efficiency is improved. High and easy to secure space for installation.

또한, 본 발명의 질소산화물 저감장치는 혼합공간에 환원제와 배기가스의 이동경로를 연장하며 환원제와 배기가스의 혼합 촉진을 유도하는 혼합촉진유도부재가 설치되어 있어 하우징의 길이가 축소될 수 있어 공간효율이 향상될 수 있다. In addition, the nitrogen oxide reducing apparatus of the present invention is installed in the mixing space, the mixing accelerator inducing member that extends the movement path of the reducing agent and the exhaust gas and induces the mixing of the reducing agent and the exhaust gas is installed, so that the length of the housing can be reduced. Efficiency can be improved.

이상에서 본 발명에 따른 질소산화물 저감장치는 도면에 도시된 일 예를 참조로 셜명하였으나, 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진자라면 이로부터 다양한 변형 및 균등한 타 실시 예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호의 범위는 첨부된 청구범위의 기술적 사상에 의해서 정해져야 할 것이다.In the above, the nitrogen oxide reduction apparatus according to the present invention has been described with reference to an example shown in the drawings, but this is only an example, and those skilled in the art can perform various modifications and other equivalents therefrom. You will understand that yes is possible. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

1 : 질소산화물 저감장치
10 : 하우징 12 : 혼합공간
13 : 유입구 16 : 배출구
30 : 탈질반응부재 50 : 소음저감부재
70 : 혼합촉진유도부재 71 : 분산부
76 : 혼합유도리브 90 : 환원제공급부1: Nitrogen oxide reduction device
10: housing 12: mixed space
13: inlet 16: outlet
30: denitrification reaction member 50: noise reduction member
70: mixing promoting induction member 71: dispersion
76: mixed induction rib 90: reducing agent supply unit

Claims (6)

내부공간이 형성되며 상기 내부공간과 연통되는 유입구와 배출구가 형성된 하우징과;
상기 하우징 내에 수용되되 상기 유입구를 통해 유입되는 환원제와 배기가스가 혼합되는 혼합공간이 형성되게 상기 유입구에 대해 이격되는 위치에 수용되며 상기 혼합공간에서 상기 환원제와 혼합된 상기 배기가스가 통과하면서 탈질되게 촉매가 코팅되는 다수의 관통공이 형성된 탈질반응부재와;
상기 배출구와 상기 탈질반응부재 사이에 위치되어 상기 탈질반응부재를 통과하여 탈질 처리된 상기 배기가스로부터 발생되는 소음을 저감하는 소음저감부재와;
상기 혼합공간 내에 위치되어 상기 배기가스의 이동경로를 연장하면서 상기 환원제와 상기 배기가스의 혼합을 유도하며 상기 탈질반응부재로 이동되는 상기 환원제가 혼합된 상기 배기가스가 상기 탈질반응부재의 중심측에 집중되지 않고 상기 탈질반응부재의 가장자리 측으로도 분산될 수 있도록 유도하는 혼합촉진유도부재와;
상기 유입구 내로 관통되며 단부에 상기 혼합촉진유도부재 방향으로 상기 환원제를 분사하는 분사노즐이 장착된 환원제공급부를 구비하는 것을 특징으로 하는 질소산화물 저감장치.A housing having an inner space and an inlet and an outlet that communicate with the inner space;
It is accommodated in the housing but is accommodated in a position spaced apart from the inlet to form a mixing space in which a reducing agent and exhaust gas flowing through the inlet are formed, and in the mixing space, the exhaust gas mixed with the reducing agent passes through the denitrification. A denitrification reaction member having a plurality of through holes coated with a catalyst;
A noise reduction member positioned between the outlet and the denitrification reaction member to reduce noise generated from the exhaust gas denitrified through the denitration reaction member;
Located in the mixing space, while extending the movement path of the exhaust gas to induce mixing of the reducing agent and the exhaust gas, the exhaust gas in which the reducing agent is moved to the denitrification reaction member is mixed and the exhaust gas is mixed to the center side of the denitration reaction member. A mixing-promoting inducing member that is not concentrated and induces to be distributed to the edge of the denitrification reaction member;
Nitrogen oxide reduction device, characterized in that it comprises a reducing agent supply unit penetrating into the inlet and equipped with an injection nozzle for spraying the reducing agent in the direction of the mixing-promoting inducing member at an end. 제 1항에 있어서, 상기 혼합촉진유도부재는
상기 유입구와 상기 탈질반응부재 사이에 위치되며 상기 유입구을 향하는 일면이 상기 유입구의 연장방향에 직교하는 방향으로 연장된 평면으로 형성되어 상기 유입구로 유입된 상기 환원제와 상기 배기가스를 상기 하우징의 가장자리 측으로 유도하면서 상기 환원제와 상기 배기가스의 이동경로를 연장하는 분산부과,
상기 유입구와 마주하는 상기 분산부의 일면의 가장자리에서 상기 분산부 방향으로 각각 연장되어 상기 하우징에 고정되며 상기 분산부에 의해 상기 하우징의 가장자리측으로 이동되는 상기 환원제와 상기 배기가스가 관통되는 관통공이 형성되게 상기 분산부의 원주방향으로 상호 이격되는 다수의 혼합유도리브를 구비하는 것을 특징으로 하는 질소산화물 저감장치.The method of claim 1, wherein the mixing promoting induction member
Located between the inlet and the denitrification reaction member, one surface facing the inlet is formed in a plane extending in a direction orthogonal to the extending direction of the inlet to induce the reducing agent and the exhaust gas flowing into the inlet toward the edge of the housing Dispersing unit for extending the movement path of the reducing agent and the exhaust gas while,
Each of the edges of the surface of the dispersion portion facing the inlet port extends in the direction of the dispersion portion, is fixed to the housing, and is formed with a through hole through which the reducing agent and the exhaust gas, which are moved toward the edge of the housing by the dispersion portion, are formed. Nitrogen oxide reduction apparatus characterized in that it comprises a plurality of mixed induction ribs spaced apart from each other in the circumferential direction of the dispersion. 제 2항에 있어서, 다수의 상기 혼합유도리브는
상기 분산부의 일면에서 상기 하우징의 유입구 방향으로 돌출되되 상기 분산부의 중심측에서 방사방향으로 연장되는데, 상기 유입구에 인접할수록 상기 하우징의 중심측을 향하는 제1면이 상기 하우징의 내주면에 인접하게 상기 분산부의 중심측에서 방사방향으로 연장된 길이가 짧게 형성되며,
상기 유입구에서 상기 분산부의 일면을 향해 이동되는 환원제와 배기가스가 나선방향으로 회전되면서 이동되어 와류발생이 유도되도록 상기 분산부의 중심측에서 방사방향으로 시계 또는 반시계 동일방향으로 호형곡률을 갖도록 각각 연장되는 것을 특징으로 하는 질소산화물 저감장치.The method of claim 2, wherein the plurality of mixed induction ribs
The one surface of the dispersing portion protrudes in the direction of the inlet of the housing but extends radially from the central side of the dispersing portion. The closer to the inlet, the first surface toward the center of the housing is adjacent to the inner circumferential surface of the housing. The length extending in the radial direction from the central side of the portion is short,
The reducing agent and the exhaust gas moving toward the one surface of the dispersing portion from the inlet port are moved while rotating in a spiral direction, so as to induce vortex generation, radially clockwise or counterclockwise from the center of the dispersing portion, respectively, so as to have arc curvature. Nitrogen oxide reduction device, characterized in that. 제 2에 있어서, 상기 분산부는
상기 유입구와 마주하는 일면에서 분산된 상기 환원제와 상기 배기가스가 상기 탈질반응부재로 이동시 상기 분산부와 상기 탈질반응부재 사이에 부압 형성을 줄이며 상기 탈질반응부재 중심측으로도 상기 환원제와 상기 배기가스가 이동 유도될 수 있도록 상기 탈질반응부재 방향으로 갈수록 외경이 감소되게 원뿔형상으로 형성되는 것을 특징으로 하는 질소산화물 저감장치.The method of claim 2, wherein the dispersion unit
When the reducing agent and the exhaust gas dispersed on one side facing the inlet port move to the denitrification reaction member, a negative pressure is formed between the dispersion unit and the denitrification reaction member, and the reducing agent and the exhaust gas are also toward the center of the denitrification reaction member. Nitrogen oxide reduction apparatus characterized in that it is formed in a conical shape so that the outer diameter decreases toward the direction of the denitrification reaction member so that movement can be induced. 제 2항에 있어서, 상기 분산부는
상기 유입구에서 상기 탈질반응부재 방향으로 각각 관통 형성된 다수의 균일분산공을 구비하며,
다수의 상기 균일분산공은
상기 유입구와 마주하여 압력이 높은 상기 분산부의 중심측에서 가장자리 측으로 상기 환원제와 상기 배기가스가 분산될 수 있도록, 상기 분산부의 가장자리측에 인접하게 위치할수록 큰 직경으로 관통형성되는 것을 특징으로 하는 질소산화물 저감장치.The method of claim 2, wherein the dispersion unit
It is provided with a plurality of uniform dispersion holes formed through each in the direction of the denitrification reaction member at the inlet,
A plurality of the uniform dispersion hole
Nitrogen oxide, characterized in that, as it is located adjacent to the edge of the dispersing portion, it is formed with a larger diameter so that the reducing agent and the exhaust gas can be distributed from the center side to the edge side of the dispersing portion having high pressure facing the inlet. Reduction device. 제 2항에 있어서, 상기 분산부는
내부가 관통되는 링 형상으로 형성되되 상기 탈질반응부재 방향으로 갈수록 외경 및 내경이 확장되게 형성되며
상기 혼합촉진유도부재는
상기 분산부의 관통된 중심측에 위치되며 상기 유입구에서 상기 탈질반응부재 방향으로 연장되되 중심측에서 양측단부로 갈수록 외경이 감소되게 형성되는 보조분산부와,
상기 분산부와 상기 보조분산부를 연결하는 적어도 하나의 분산리브를 더 구비하는 것을 특징으로 하는 질소산화물 저감장치.The method of claim 2, wherein the dispersion unit
It is formed in a ring shape through which the inside passes, but the outer diameter and inner diameter are formed to extend toward the denitrification reaction member.
The mixing promoting induction member
And the secondary dispersion portion is located on the central side of the dispersion portion and extends in the direction of the denitrification reaction member from the inlet, the outer diameter decreases toward the both ends from the center side,
And at least one dispersion rib connecting the dispersion unit and the auxiliary dispersion unit.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102533107B1 (en) * 2022-05-10 2023-05-16 임현재 Reactive deodorization treatment system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100198968B1 (en) 1995-02-20 1999-06-15 Matsuo Engineering Co Ltd Bridge raising supporting method and bearing devicde for the method
JP2008128093A (en) * 2006-11-21 2008-06-05 Mitsubishi Fuso Truck & Bus Corp Exhaust emission control device for internal combustion engine
JP2013221463A (en) * 2012-04-17 2013-10-28 Daiko Sangyo:Kk Denitration catalyst unit inserted type muffler
KR101381827B1 (en) 2012-11-27 2014-04-04 주식회사 파나시아 Exhaust gas denitrifing reactor and the exhaust gas denitrifing system
KR101593485B1 (en) * 2015-11-13 2016-02-12 박장섭 A structure of canning for Selective Catalytic Reduction with guide vane and air distribution system
KR101669008B1 (en) * 2015-06-03 2016-10-25 주식회사 덱코 Apparatus for mixing gas of engine device
KR101724429B1 (en) * 2012-10-11 2017-04-10 주식회사 파나시아 Exhaust gas denitrifing system having noise-reduction structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100198968B1 (en) 1995-02-20 1999-06-15 Matsuo Engineering Co Ltd Bridge raising supporting method and bearing devicde for the method
JP2008128093A (en) * 2006-11-21 2008-06-05 Mitsubishi Fuso Truck & Bus Corp Exhaust emission control device for internal combustion engine
JP2013221463A (en) * 2012-04-17 2013-10-28 Daiko Sangyo:Kk Denitration catalyst unit inserted type muffler
KR101724429B1 (en) * 2012-10-11 2017-04-10 주식회사 파나시아 Exhaust gas denitrifing system having noise-reduction structure
KR101381827B1 (en) 2012-11-27 2014-04-04 주식회사 파나시아 Exhaust gas denitrifing reactor and the exhaust gas denitrifing system
KR101669008B1 (en) * 2015-06-03 2016-10-25 주식회사 덱코 Apparatus for mixing gas of engine device
KR101593485B1 (en) * 2015-11-13 2016-02-12 박장섭 A structure of canning for Selective Catalytic Reduction with guide vane and air distribution system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102533107B1 (en) * 2022-05-10 2023-05-16 임현재 Reactive deodorization treatment system

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