KR20120019969A - Intake system of engine - Google Patents

Intake system of engine Download PDF

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Publication number
KR20120019969A
KR20120019969A KR1020100083622A KR20100083622A KR20120019969A KR 20120019969 A KR20120019969 A KR 20120019969A KR 1020100083622 A KR1020100083622 A KR 1020100083622A KR 20100083622 A KR20100083622 A KR 20100083622A KR 20120019969 A KR20120019969 A KR 20120019969A
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South Korea
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exhaust gas
purification system
exhaust
type catalyst
ball
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KR1020100083622A
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Korean (ko)
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이정현
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현대자동차주식회사
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Publication of KR20120019969A publication Critical patent/KR20120019969A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous

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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)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

PURPOSE: An exhaust-gas purification system is provided to enable easy application to an exhaust line with a complex structure by forming a container forming a catalyst device in a ball type. CONSTITUTION: An exhaust-gas purification system comprises an exhaust line(130) and a purification unit. Exhaust gas flows in the exhaust line. The purification unit is arranged on one side of the exhaust line to reduce harmful materials from the exhaust gas. The purification unit comprises a plurality of ball-type catalyst units(110). The ball-type catalyst unit comprises a porous container, wash coat, and oxidation catalyst. The porous container is made of porous ceramic. The wash coat is attached to the container. The oxidation catalyst is coated on the wash coat.

Description

배기가스 정화 시스템{INTAKE SYSTEM OF ENGINE}Exhaust Gas Purification System {INTAKE SYSTEM OF ENGINE}

본 발명은 배기가스 정화 시스템에 관한 것으로서, 보다 상세하게는 배기가스의 유해물질과 반응하고 이를 화학적으로 제거하는 배기가스 정화 시스템에 관한 것이다.The present invention relates to an exhaust gas purification system, and more particularly, to an exhaust gas purification system that reacts with and chemically removes harmful substances of exhaust gas.

일반적으로 엔진에서 배출되는 일산화탄소, 탄화수소, 및 입자상물질을 저감시키기 위해서 촉매성분을 포함하는 다공성 촉매장치가 적용되고 있다.In general, in order to reduce carbon monoxide, hydrocarbons, and particulate matter emitted from an engine, a porous catalyst device including a catalyst component is applied.

상기 촉매장치는 통상적으로 원통형 구조를 갖고 있어서, 외부형상의 제약이 크고, 배기가스의 흐름이 균일하지 않다. 따라서, 설계자유도가 낮고, 생산성이 떨어지는 동시에, 내구성이 저하되는 문제점이 있다.The catalyst device generally has a cylindrical structure, so that the external shape is largely restricted, and the exhaust gas flow is not uniform. Therefore, there is a problem in that design freedom is low, productivity is lowered, and durability is lowered.

따라서, 본 발명은 형상에 제약이 적고 배기가스가 균일하게 흐르는 촉매장치를 구비하는 배기가스 정화 시스템을 제공하는 것이다.Accordingly, the present invention provides an exhaust gas purifying system having a catalyst device having a limited shape and having a uniform flow of exhaust gas.

본 발명에 따른 배기가스 정화 시스템은, 배기가스가 흐르는 배기라인, 및 상기 배기라인의 일측에 배치되어 상기 배기가스에 포함된 유해물질을 저감시키는 정화장치를 포함하고, 상기 정화장치는, 복수 개의 볼타입 촉매유닛들을 포함한다.An exhaust gas purification system according to the present invention includes an exhaust line through which exhaust gas flows, and a purifier disposed on one side of the exhaust line to reduce harmful substances contained in the exhaust gas. Ball type catalyst units.

상기 볼타입 촉매유닛은, 다공성세라믹으로 만들어진 다공성 담체, 상기 담체에 부착되는 워시코트, 및 상기 워시코트에 코팅된 산화촉매를 포함한다.The ball type catalyst unit includes a porous carrier made of porous ceramics, a washcoat attached to the carrier, and an oxidation catalyst coated on the washcoat.

상기 볼타입 촉매유닛은, 그 직경이 10 내지 50mm인 구(sphere)형이고, 기공(pore)의 크기는 10 내지 30㎛이며, 다공률(porosity)은 50 내지 70%이다.The ball type catalyst unit has a sphere shape of 10 to 50 mm in diameter, a pore size of 10 to 30 μm, and a porosity of 50 to 70%.

상기 다공성 담체는 코디어라이트이고, 상기 워시코트는 알루미나(α-Al2O3) 또는 세리아화합물(Ce-Zr)로 구성되며, 상기 산화촉매는 백금(Pt)이나 팔라듐(Pd)으로 구성된다.The porous carrier is cordierite, the washcoat is composed of alumina (α-Al 2 O 3) or ceria compound (Ce-Zr), and the oxidation catalyst is composed of platinum (Pt) or palladium (Pd).

상기 정화장치는, 배기가스가 흐르는 방향으로 거리를 두고, 설치되는 메쉬타입의 지지체를 포함하고, 상기 볼타입 촉매유닛들은 상기 지지체 사이에 충진된다.The purifying apparatus includes a mesh type support provided at a distance in a direction in which exhaust gas flows, and the ball type catalyst units are filled between the supports.

앞에서 기재된 바와 같이 본 발명에 따른 배기가스 정화 시스템에서, 촉매장치를 구성하는 담체를 볼타입으로 구성함으로써 복잡한 구조를 갖는 배기라인에 적용이 쉽다. 아울러, 볼타입 촉매유닛은 배기가스와의 반응면적이 넓고 배기가스의 흐름이 좋아져서 정화율이 상승되고, 내구성이 향상된다. 아울러, 반응면적이 늘어나 귀금속의 양이 저감될 수 있다.As described above, in the exhaust gas purification system according to the present invention, it is easy to apply to the exhaust line having a complicated structure by configuring the carrier constituting the catalyst device in a ball type. In addition, the ball type catalyst unit has a large reaction area with the exhaust gas and improves the flow rate of the exhaust gas, thereby increasing the purification rate and improving durability. In addition, the reaction area is increased, the amount of precious metal can be reduced.

도 1은 본 발명의 실시예에 따른 배기가스 정화 시스템의 개략적인 구성도이다.
도 2는 본 발명의 실시예에 따른 배기가스 정화 시스템에 구비되는 볼타입 촉매유닛의 형태를 보여주는 부분 상세도이다.
도 3은 본 발명의 실시예에 따른 배기가스 정화 시스템에 구비되는 볼타입 촉매유닛의 제조과정을 보여주는 플로우차트이다.1 is a schematic configuration diagram of an exhaust gas purification system according to an embodiment of the present invention.
Figure 2 is a partial detailed view showing the form of the ball type catalyst unit provided in the exhaust gas purification system according to an embodiment of the present invention.
3 is a flowchart showing a manufacturing process of the ball type catalyst unit provided in the exhaust gas purification system according to an embodiment of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 배기가스 정화 시스템의 개략적인 구성도이다.1 is a schematic configuration diagram of an exhaust gas purification system according to an embodiment of the present invention.

도 1에 도시한 바와 같이, 배기가스 정화 시스템은 배기가스가 배출되는 배기라인 중간에 설치되는 촉매장치(100)를 포함한다. 상기 촉매장치(100)는 디젤산화촉매(DOC: diesel oxidation catalyst)일 수 있다.As shown in FIG. 1, the exhaust gas purification system includes a catalyst device 100 installed in the middle of an exhaust line through which exhaust gas is discharged. The catalyst device 100 may be a diesel oxidation catalyst (DOC).

그리고, 배기가스가 흐르는 방향으로 설정된 간격을 두고 지지체가 배치되고, 상기 지지체는 제1지지체(120a)와 제2지지체(120b)를 포함한다.The support is disposed at intervals set in a direction in which the exhaust gas flows, and the support includes a first support 120a and a second support 120b.

상기 제1지지체(120a)와 상기 제2지지체(120b) 사이에 충진되는 볼타입 촉매유닛(110)으로 구성된다.It is composed of a ball type catalyst unit 110 is filled between the first support (120a) and the second support (120b).

상기 제1지지체(120a)로 유입된 배기가스는 상기 볼타입 촉매유닛(110)을 통과해서 상기 제2지지체(120b)를 통해서 배출된다.Exhaust gas introduced into the first support 120a passes through the ball type catalyst unit 110 and is discharged through the second support 120b.

상기 제1지지체(120a)와 상기 제2지지체(120b)는 메쉬타입을 갖고 있어서, 배기가스가 용이하게 통과하고, 상기 볼타입 촉매유닛(110)은 상기 제1지지체(120a)와 상기 제2지지체(120b)를 통과하지 못한다.Since the first support body 120a and the second support body 120b have a mesh type, exhaust gas passes easily, and the ball type catalyst unit 110 includes the first support body 120a and the second support body. It does not pass through the support 120b.

배기가스에 포함된 입자상물질(PM: particulate matter), 일산화탄소(CO), 및 탄화수소(HC)는 상기 볼타입 촉매유닛(110)을 통과하면서 이 촉매성분과 반응하여 이산화탄소(CO2)와 수분(H2O)로 전환된다.Particulate matter (PM), carbon monoxide (CO), and hydrocarbon (HC) contained in the exhaust gas react with the catalyst component while passing through the ball type catalyst unit 110 to react with carbon dioxide (CO2) and water (H2O). Is converted to).

전술한 바와 같이, 상기 볼타입 촉매유닛(110)은 구(sphere)형의 볼 타입으로, 다공성 구조로 형성되어, 배기가스는 상기 볼타입 촉매유닛(110) 사이와 상기 볼타입 촉매유닛(110)을 통과하여 반응하는 것으로, 그 반응면적이 넓어 정화효율이 높다. As described above, the ball-type catalyst unit 110 is a sphere-type ball type, is formed of a porous structure, the exhaust gas between the ball-type catalyst unit 110 and the ball-type catalyst unit 110 Reaction is passed through), the reaction area is large, the purification efficiency is high.

아울러, 상기 볼타입 촉매유닛(110)은 복잡한 형상을 갖는 배기라인(130) 안으로 주입하는 것으로 설치가 완료되므로 설치작업이 용이하고, 생산공정을 단순화할 수 있다. In addition, since the installation is completed by injecting the ball-type catalyst unit 110 into the exhaust line 130 having a complicated shape, the installation work is easy, and the production process can be simplified.

또한, 상기 볼타입 촉매유닛(110)은 여러 개의 다른 차종에 공용으로 사용이 가능하고, 여러 가지 복잡한 형태를 갖는 배기라인에 적용이 가능하다.In addition, the ball type catalyst unit 110 can be used in common for several different vehicles, it can be applied to the exhaust line having a variety of complex forms.

도 2는 본 발명의 실시예에 따른 배기가스 정화 시스템에 구비되는 볼타입 촉매유닛의 형태를 보여주는 부분 상세도이다.Figure 2 is a partial detailed view showing the form of the ball type catalyst unit provided in the exhaust gas purification system according to an embodiment of the present invention.

도 2를 참조하면, 상기 볼타입 촉매유닛(110)은 원형의 구(sphere) 형태로, 일부를 확대하여 보면, 기공(200)(pore)이 형성되어, 배기가스와의 반응면적을 극대화하는 구조를 갖는다.Referring to FIG. 2, the ball type catalyst unit 110 has a circular sphere shape, and when a part thereof is enlarged, pores 200 are formed to maximize the reaction area with the exhaust gas. Has a structure.

본 발명의 실시예에서, 상기 볼타입 촉매유닛(110)은 다공성 세라믹 재질로 만들어진 다공성 담체와 이에 부착되는 워시코트와 산화촉매를 포함하고 있으며, 그 직경이 10 내지 50mm인 구(sphere)형이고, 기공(pore)의 크기는 10 내지 30㎛이며, 다공률(porosity)은 50 내지 70%이다.In an embodiment of the present invention, the ball type catalyst unit 110 includes a porous carrier made of a porous ceramic material, a wash coat and an oxidation catalyst attached thereto, and have a sphere shape of 10 to 50 mm in diameter. , The pore (pore) size is 10 to 30㎛, porosity (porosity) is 50 to 70%.

상기 다공성 담체는 코디어라이트이고, 상기 워시코트는 알루미나 또는 세리아 화합물로 구성되고, 상기 산화촉매는 백금이나 팔라듐으로 구성될 수 있다.The porous carrier is cordierite, the washcoat is composed of alumina or ceria compound, and the oxidation catalyst may be composed of platinum or palladium.

도 3은 본 발명의 실시예에 따른 배기가스 정화 시스템에 구비되는 볼타입 촉매유닛의 제조과정을 보여주는 플로우차트이다.3 is a flowchart showing a manufacturing process of the ball type catalyst unit provided in the exhaust gas purification system according to an embodiment of the present invention.

도 3을 참조하면, 볼타입 촉매유닛(110)의 제조과정은 원료를 혼합하는 단계(S300), 반죽하는 단계(S310), 성형하는 단계(S320), 및 소성하는 단계(S330)를 포함한다.Referring to FIG. 3, the manufacturing process of the ball type catalyst unit 110 includes mixing the raw materials (S300), kneading (S310), molding (S320), and firing (S330). .

상기 혼합하는 단계(S300)에서, 알루미나(Al2O3) 또는 코디어라이트, 탈크(talc, 활석), 및 고령토(kaolinite)를 분쇄하고 수분과 함께 혼합한다 상기 반죽하는 단계(S310)에서, 혼합된 원료를 반죽하고, 상기 성형하는 단계(S320)에서 원형으로 모양을 만든다. 아울러, 상기 소성하는 단계(S330)에서 설정된 온도로 가열한다.In the mixing step (S300), alumina (Al2O3) or cordierite, talc (talc, talc), and kaolinite are pulverized and mixed with moisture. In the kneading step (S310), the mixed raw materials To knead, to form a shape in a circular step (S320). In addition, it is heated to a temperature set in the firing step (S330).

상기 소성하는 단계(S330)에서, 온도가 점차 상승하면 탈크가 제거되면서 기공이 형성되기 시작하고, 그 온도를 섭씨 1400도까지 더 상승시키면 고령토에 의해서 다시 기공이 성장한다. 여기서, 기공의 크기는 분쇄된 입자크기와 원재료의 비율에 따라서 결정된다.In the sintering step (S330), when the temperature gradually rises, talc is removed and pores are formed, and when the temperature is further increased to 1400 degrees Celsius, the pores are grown again by kaolin. Here, the pore size is determined according to the ratio of the crushed particle size and the raw material.

이상으로 본 발명에 관한 바람직한 실시예를 설명하였으나, 본 발명은 상기 실시예에 한정되지 아니하며, 본 발명의 실시예로부터 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의한 용이하게 변경되어 균등하다고 인정되는 범위의 모든 변경을 포함한다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: 촉매장치
110: 볼타입 촉매유닛
120a: 제1지지체
120b: 제2지지체
130: 배기라인
200: 기공100: catalytic device
110: ball type catalyst unit
120a: first support
120b: second support
130: exhaust line
200: pore

Claims (5)

배기가스가 흐르는 배기라인; 및
상기 배기라인의 일측에 배치되어 상기 배기가스에 포함된 유해물질을 저감시키는 정화장치; 를 포함하고,
상기 정화장치는, 복수 개의 볼타입 촉매유닛들을 포함하는 것을 특징으로 하는 배기가스 정화 시스템.An exhaust line through which exhaust gas flows; And
A purifier disposed on one side of the exhaust line to reduce harmful substances contained in the exhaust gas; Including,
The purification apparatus, the exhaust gas purification system comprising a plurality of ball type catalyst units. 제1항에서,
상기 볼타입 촉매유닛은,
다공성세라믹으로 만들어진 다공성 담체;
상기 담체에 부착되는 워시코트; 및
상기 워시코트에 코팅된 산화촉매; 를 포함하는 것을 특징으로 하는 배기가스 정화 시스템.In claim 1,
The ball type catalyst unit,
A porous carrier made of porous ceramics;
A washcoat attached to the carrier; And
An oxidation catalyst coated on the washcoat; Exhaust gas purification system comprising a. 제1항에서,
상기 볼타입 촉매유닛은,
그 직경이 10 내지 50mm인 구(sphere)형이고, 기공(pore)의 크기는 10 내지 30㎛이며, 다공률(porosity)은 50 내지 70%인 것을 특징으로 하는 배기가스 정화 시스템.In claim 1,
The ball type catalyst unit,
An exhaust gas purification system, characterized in that the sphere is 10 to 50 mm in diameter, the pore size is 10 to 30 µm, and the porosity is 50 to 70%. 제2항에서,
상기 다공성 담체는 코디어라이트이고, 상기 워시코트는 알루미나(α-Al2O3) 또는 세리아화합물(Ce-Zr)로 구성되며, 상기 산화촉매는 백금(Pt)이나 팔라듐(Pd)으로 구성되는 것을 특징으로 하는 배기가스 정화 시스템. In claim 2,
The porous carrier is cordierite, the washcoat is composed of alumina (α-Al2O3) or ceria compound (Ce-Zr), and the oxidation catalyst is composed of platinum (Pt) or palladium (Pd) Exhaust gas purification system. 제1항에서,
상기 정화장치는,
배기가스가 흐르는 방향으로 거리를 두고, 설치되는 메쉬타입의 지지체를 포함하고, 상기 볼타입 촉매유닛들은 상기 지지체 사이에 충진되는 것을 특징으로 하는 배기가스 정화 시스템.
In claim 1,
The purification device,
An exhaust gas purification system comprising: a mesh-type support provided at a distance in a direction in which exhaust gas flows, wherein the ball-type catalyst units are filled between the supports.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113565606A (en) * 2021-08-31 2021-10-29 慈溪市汽车配件有限公司 Three-way catalyst for treating automobile exhaust

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113565606A (en) * 2021-08-31 2021-10-29 慈溪市汽车配件有限公司 Three-way catalyst for treating automobile exhaust

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