KR100792912B1 - Nano particle detection system and method for exhaust gas - Google Patents

Nano particle detection system and method for exhaust gas Download PDF

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KR100792912B1
KR100792912B1 KR1020060111778A KR20060111778A KR100792912B1 KR 100792912 B1 KR100792912 B1 KR 100792912B1 KR 1020060111778 A KR1020060111778 A KR 1020060111778A KR 20060111778 A KR20060111778 A KR 20060111778A KR 100792912 B1 KR100792912 B1 KR 100792912B1
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exhaust gas
exhaust pipe
exhaust
magnetic field
nanoparticles
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KR1020060111778A
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Korean (ko)
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오재민
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현대자동차주식회사
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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
    • B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]

Abstract

A system and a method for collecting nanoparticles of exhaust gas are provided to reduce the number of particles discharged as well as the amount of soot contained in exhaust gas by making it not necessary to reduce the size of a DPF channel for collecting nanoparticles or to lengthen a flow path for prolonging the residence time of the particles in an exhaust pipe. A system for collecting nanoparticles of exhaust gas includes: an exhaust pipe(10) through which exhaust gas flows; a particle collection part(11) installed in the exhaust pipe to collect nanoparticles contained in the exhaust gas; and magnets(12) installed on the exhaust pipe in front of the particle collection part to form a magnetic field, wherein the exhaust gas flowing through the exhaust pipe is electrically discharged such that particles with electric charges passing through the magnetic field perform a cyclone movement. A method for collecting nanoparticles of exhaust gas includes the steps of: discharging exhaust gas that flows through an exhaust pipe; installing magnets on the exhaust pipe to pass the discharged exhaust gas through a magnetic field; and collecting the nanoparticles in a particle collection part by allowing nanoparticles contained in the exhaust gas to perform a cyclone movement while passing through the magnetic field.

Description

배기가스 나노입자 포집장치 및 방법{Nano particle detection system and method for exhaust gas}Nano particle detection system and method for exhaust gas

도 1은 본 발명에 따른 배기가스 나노입자 포집장치의 일실시예를 나타내는 개략도이고,1 is a schematic view showing an embodiment of an exhaust gas nanoparticle collecting device according to the present invention,

도 2는 본 발명에 따른 배기가스 나노입자 포집장치의 작동원리를 설명하기 위한 도면이다.2 is a view for explaining the operating principle of the exhaust gas nanoparticle collecting device according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 배기관 11 : 입자포집부10: exhaust pipe 11: particle collecting unit

12 : 자석12: magnet

본 발명은 배기가스 나노입자 포집장치 및 방법에 관한 것으로서, 더욱 상세하게는 방전된 배기가스를 자기장을 이용해 배기관 내 배기가스의 체공시간을 길게하고 입자 성장률을 증대하여, 유로의 증가없이 추가적인 압력손실을 방지하고, 앞 으로 강화되는 배기가스 규제에 적극 대응할 수 있도록 한 배기가스 나노입자 포집장치 및 방법에 관한 것이다.The present invention relates to an apparatus and method for collecting exhaust gas nanoparticles, and more particularly, by using the discharged exhaust gas as a magnetic field to increase the air passage time of the exhaust gas in the exhaust pipe and increase the particle growth rate, thereby increasing additional pressure loss without increasing the flow path. The present invention relates to an apparatus and method for collecting exhaust gas nanoparticles, which can prevent the occurrence of gas and actively respond to the tightening regulations of exhaust gas.

일반적으로 엔진에서 연소된 배기가스는 배기 매니폴드와 배기 파이프를 거쳐 대기로 배출되는데, 이렇게 배출되는 배기가스는 인체에 유해하고 환경을 오염시킬 수 있는 성분들을 다량 함유하고 있기 때문에 배출 전 반드시 정화처리를 하도록 규제하고 있다.In general, the exhaust gas from the engine is discharged to the atmosphere through the exhaust manifold and the exhaust pipe, and this exhaust gas contains a large amount of components that are harmful to the human body and may pollute the environment. To regulate.

특히, 배기가스에는 탄화수소, 일산화탄소, 질소산화물과 같은 유해한 가스가 포함되어 있는데, 현재 이러한 유해가스에 대한 배출기준이 각국 정부에 의해 정해져 있으며, 이에 각 자동차 제조사에서는 새로이 자동차를 개발할 때 이러한 기준을 충족시켜야 한다.In particular, the exhaust gas contains harmful gases such as hydrocarbons, carbon monoxide, and nitrogen oxides. Currently, emission standards for these harmful gases are set by governments, and each automobile manufacturer meets these standards when developing a new vehicle. You have to.

이와 같은 기준을 충족시키기 위하여, 본 출원인은 삼원촉매 정화기를 엔진의 배기계에 설치하여 탄화수소와 일산화탄소의 산화 및 질소산화물의 환원을 촉진하도록 하고 있다. In order to meet such standards, the applicant is to install a three-way catalytic purifier in the exhaust system of the engine to promote the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides.

최근에는 배기가스에 포함된 수트 배출량 뿐만 아니라, 입자 배출 개수도 규제가 강화되고 있는 추세이다.In recent years, regulations on the number of particle emissions as well as the number of soot emissions included in exhaust gas have been tightened.

그러나, 나노 사이즈 입자를 포집하기 위해서는 DPF 채널 사이즈를 줄여야 하지만, 유동 저항에 의한 압력이 강하하는 문제점이 있다.However, in order to capture the nano-sized particles, the DPF channel size should be reduced, but there is a problem that the pressure due to the flow resistance drops.

또한, 입자의 배기관 내 체공시간을 증가시키기 위해 배기관의 형상을 변경하여 배기가스가 지나는 유로를 길게 하는 방법이 있으나, 이는 배기가스의 압력 저하를 유발하게 되는 문제점이 있다.In addition, there is a method of lengthening the flow path through which the exhaust gas passes by changing the shape of the exhaust pipe so as to increase the airtime in the exhaust pipe of the particles, but this causes a problem of lowering the pressure of the exhaust gas.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 방전된 배기가스를 자기장을 이용하여 배기관 내 체공시간을 길게 해서 입자 성장률을 증대시킴으로써, 나노 사이즈 입자를 포집하기 위해 DPF 채널 사이즈를 줄일 필요가 없고, 입자의 배기관 내 체공시간을 늘이기 위해 유로를 길게 할 필요없이 배기가스의 수트 배출량 및 입자 배출 개수도 함께 저감할 수 있도록 한 배기가스 나노입자 포집장치 및 방법를 제공하는데 그 목적이 있다.The present invention has been devised in view of the above, and by using the magnetic field to discharge the discharged gas, it is necessary to reduce the size of the DPF channel in order to collect the nano-sized particles by increasing the particle growth rate by increasing the pore time in the exhaust pipe. It is an object of the present invention to provide an exhaust gas nanoparticle collecting device and a method for reducing the soot discharge and the number of particle discharge of the exhaust gas without having to lengthen the flow path in order to increase the air passage time of the particles in the exhaust pipe.

상기한 목적을 달성하기 위한 본 발명은 배기가스 나노입자 포집장치에 있어서,The present invention for achieving the above object in the exhaust gas nanoparticle collecting device,

내부에 배기가스가 흐르는 배기관과; 상기 배기관에 설치되어 배기가스 중의 나노입자를 포집하는 입자포집부와; 상기 입자포집부의 앞쪽으로 상기 배기관에 설치되어 자기장을 형성하는 자석;을 포함하여 구성되고, 상기 배기관을 흐르는 배기가스를 방전시켜 상기 자기장을 통과하는 전하를 띤 입자들이 사이클론 운동을 하는 것을 특징으로 한다.An exhaust pipe through which exhaust gas flows; A particle collecting unit installed in the exhaust pipe and collecting nanoparticles in the exhaust gas; And a magnet installed in the exhaust pipe in front of the particle collecting unit to form a magnetic field, wherein the charged particles passing through the magnetic field discharge the exhaust gas flowing through the exhaust pipe to perform a cyclone motion. .

바람직한 구현예로서, 배기가스 나노입자 포집방법에 있어서,In a preferred embodiment, in the method for collecting exhaust gas nanoparticles,

배기관의 내부에 흐르는 배기가스를 방전시키는 단계와; 상기 배기관에 자석을 설치하여 상기 방전된 배기가스가 자기장을 통과하는 단계와; 상기 단계에서 배 기가스 중의 나노입자가 자기장을 통과하면서 사이클론 운동을 하여 배기관에 설치된 입자포집부에 포집되는 단계;를 포함하여 이루어지는 것을 특징으로 한다.Discharging the exhaust gas flowing in the exhaust pipe; Installing a magnet in the exhaust pipe so that the discharged exhaust gas passes through a magnetic field; And collecting the particulates in the exhaust gas by collecting the particles collected in the exhaust pipe by performing cyclone movement while passing through the magnetic field.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부한 도 1은 본 발명에 따른 배기가스 나노입자 포집장치의 일실시예를 나타내는 개략도이고, 도 2는 본 발명에 따른 배기가스 나노입자 포집장치의 작동원리를 설명하기 위한 도면이다.1 is a schematic view showing an embodiment of the exhaust gas nanoparticle collecting device according to the present invention, Figure 2 is a view for explaining the operating principle of the exhaust gas nanoparticle collecting device according to the present invention.

본 발명은 자기장을 이용해 방전된 배기가스의 배기관(10) 내 체공시간을 길게 해서 입자성장률을 증대시킬 수 있도록 한 점에 주안점이 있다.The present invention focuses on increasing the particle growth rate by lengthening the pore time in the exhaust pipe 10 of discharged exhaust gas using a magnetic field.

본 발명은 내부에 배기가스가 흐르는 배기관(10)과, 배기관(10)에 설치되어 배기가스 중의 유해입자를 포집하는 입자포집부(11)와, 상기 배기가스를 방전시킨 후 방전된 배기가스가 자기장을 통과하도록 배기관(10)에 설치된 자석(12)을 포함한다.The present invention provides an exhaust pipe 10 through which exhaust gas flows, a particle collecting unit 11 installed in the exhaust pipe 10 to collect harmful particles in the exhaust gas, and the exhaust gas discharged after the exhaust gas is discharged. It includes a magnet 12 installed in the exhaust pipe 10 to pass through.

본 발명은 배기가스 입자의 배기관(10) 내 체공시간을 늘이기 위해, 배기가스가 지나는 유로를 길게 하는 것이 아니므로, 추가적 압력 손실이 없는 장점이 있다.The present invention does not lengthen the flow path through which the exhaust gas passes in order to increase the air hole time in the exhaust pipe 10 of the exhaust gas particles, and thus there is an advantage that there is no additional pressure loss.

도 1에 도시한 바와 같이, 상기 배기관(10)에는 배기가스가 지나가고, 이 배기가스를 방전시킨다. 이때, 상기 배기가스를 방전시키기 위한 방법으로 여러가지가 있을 수 있으나, 본 발명에서는 코로나 방전을 일실시예로 사용할 수 있다.As shown in FIG. 1, exhaust gas passes through the exhaust pipe 10, and the exhaust gas is discharged. In this case, there may be various methods for discharging the exhaust gas, but in the present invention, corona discharge may be used as an embodiment.

또한, 상기 배기관(10)을 흐르고 있는 배기가스가 자기장을 통과하도록 하기 위해 배기관(10)에 자석(12)을 설치하여 자기장을 형성한다.In addition, in order to allow the exhaust gas flowing through the exhaust pipe 10 to pass through the magnetic field, a magnet 12 is installed in the exhaust pipe 10 to form a magnetic field.

도 2는 본 발명에 따른 배기가스 나노입자 포집장치의 작용원리를 설명하기 위한 도면으로서, 자기장을 통과하는 전하를 띤 입자들은 로렌츠의 힘(F=qvB)을 받는다. 이때, q는 전하량, v는 전하를 띤 입자의 속도, B는 자기장의 세기를 나타낸다.2 is a view for explaining the principle of operation of the exhaust gas nanoparticle collecting device according to the present invention, the charged particles passing through the magnetic field is subjected to the Lorentz force (F = qvB). Where q is the charge amount, v is the speed of the charged particles, and B is the strength of the magnetic field.

즉, 상기 방전된 배기가스가 자기장을 통과하면서 로렌츠의 힘을 받아서 사이클론 운동을 하게 되는바, 로렌츠 힘에 의해 배기관(10) 내부에 와류가 발생하고 크기 또는 밀도가 큰 입자들은 원심력에 의해 선회하면서 배기관(10)의 내벽면에 모이게 되고, 자기장을 통과한 입자들은 배기관(10)에 설치된 입자포집부(11)에 포집된다.That is, the discharged exhaust gas passes through the magnetic field and undergoes a cyclone motion by Lorentz's force. As a result, vortices are generated inside the exhaust pipe 10 by the Lorentz force, and particles having a large size or density are turned by centrifugal force. The particles are collected on the inner wall surface of the exhaust pipe 10, and the particles passing through the magnetic field are collected in the particle collecting unit 11 installed in the exhaust pipe 10.

따라서, 입자들의 배기관(10) 내 체공시간이 증가하게 되고, 입자 사이즈와 입자가 띤 전하량에 따라 사이클론 운동이 저마다 다르게 되어, 입자끼리 충돌할 확률도 높아지게 된다.Therefore, the pore time in the exhaust pipe 10 of the particles is increased, the cyclone movement is different for each of the particles according to the particle size and the charge amount of the particles, the probability of collision between the particles is also increased.

결국에는 크기가 작은 나노입자들이 모여 입자성장률이 증가하게 되므로, 유로 길이를 증가시킬 필요도 없어 이에 따른 추가적 압력 손실도 방지할 수 있고, DPF 채널의 크기를 줄일 필요도 없어 유동저항에 의한 압력 강하 문제도 발생하지 않는 장점이 있다.Eventually, small nanoparticles gather to increase particle growth rate, so there is no need to increase the length of the flow path, thereby preventing additional pressure loss, and there is no need to reduce the size of the DPF channel. There is an advantage that no problem occurs.

더 나아가 수트 배출량 및 입자 배출 갯수로 줄일 수 있으므로, 앞으로 강화되는 배기가스 규제에 적극적으로 대응할 수 있다.Furthermore, the number of soot and particle emissions can be reduced, allowing active responses to future tightening emissions regulations.

미설명부호 13은 원형 장애물(circular obstacle), 14는 전류 플러그(current plug), 15는 열전대(thermocouple)이다.Reference numeral 13 denotes a circular obstacle, 14 a current plug, and 15 a thermocouple.

이상에서는 본 발명을 특정의 바람직한 실시예에 대하여 도시하고 설명하였으나, 본 발명은 이러한 실시예에 한정되지 않으며, 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 특허청구범위에서 청구하는 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 실시할 수 있는 다양한 형태의 실시예들을 모두 포함한다.While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to these embodiments, and has been claimed by those of ordinary skill in the art to which the invention pertains. It includes all the various forms of embodiments that can be carried out without departing from the spirit.

이상에서 본 바와 같이, 본 발명에 따른 배기가스 나노입자 포집장치 및 방법에 의하면, 방전된 배기가스가 자기장을 통과하여 크기가 작은 나노입자들이 로렌츠의 힘을 받아서 사이클론 운동을 함으로써, 입자들의 배기관 내 체공시간이 증가되고, 입자의 크기 및 입자가 띤 전하량에 따라 사이클론 운동이 각가 다르게 되어 입자들끼리 충돌할 확률이 높아져서 입자성장률을 증가시킬 수 있고, 수트 배출량 및 입자 배출 갯수로 줄일 수 있으므로, 앞으로 강화되는 배기가스 규제에 적극적으로 대응할 수 있다.As described above, according to the exhaust gas nanoparticle collecting device and method according to the present invention, the discharged exhaust gas passes through the magnetic field and the small nanoparticles are subjected to the Lorentz force by the cyclone movement, the particles in the exhaust pipe As the airtime increases, the cyclone motion varies depending on the size of the particles and the amount of charge on the particles, increasing the probability of collision between particles, increasing particle growth rate, and reducing the number of soot and particle emissions. Actively respond to tightening emissions regulations.

또한, 유로 길이를 증가시킬 필요도 없어 이에 따른 추가적 압력 손실도 방지할 수 있고, DPF 채널의 크기를 줄일 필요도 없어 유동저항에 의한 압력 강하 문제도 발생하지 않는 장점이 있다.In addition, there is no need to increase the length of the flow path, thereby preventing additional pressure loss, and there is no need to reduce the size of the DPF channel, so that there is no problem of pressure drop due to flow resistance.

Claims (2)

배기가스 나노입자 포집장치에 있어서,In the exhaust gas nanoparticle collecting device, 내부에 배기가스가 흐르는 배기관(10)과;An exhaust pipe 10 through which exhaust gas flows; 상기 배기관(10)에 설치되어 배기가스 중의 나노입자를 포집하는 입자포집부(11)와;A particle collecting unit 11 installed at the exhaust pipe 10 to collect nanoparticles in the exhaust gas; 상기 입자포집부(11)의 앞쪽으로 상기 배기관(10)에 설치되어 자기장을 형성하는 자석(12);을 포함하여 구성되고, 상기 배기관(10)을 흐르는 배기가스를 방전시켜 상기 자기장을 통과하는 전하를 띤 입자들이 사이클론 운동을 하는 것을 특징으로 하는 배기가스 나노입자 포집장치.A magnet 12 installed in the exhaust pipe 10 toward the front of the particle collecting unit 11 to form a magnetic field; and configured to discharge the exhaust gas flowing through the exhaust pipe 10 to pass through the magnetic field. Exhaust nanoparticle collecting device, characterized in that the particles are cyclone movement. 배기가스 나노입자 포집방법에 있어서,In the exhaust gas nanoparticle collection method, 배기관(10)의 내부에 흐르는 배기가스를 방전시키는 단계와;Discharging the exhaust gas flowing in the exhaust pipe (10); 상기 배기관(10)에 자석(12)을 설치하여 상기 방전된 배기가스가 자기장을 통과하는 단계와;Installing a magnet (12) in the exhaust pipe (10) so that the discharged exhaust gas passes through a magnetic field; 상기 단계에서 배기가스 중의 나노입자가 자기장을 통과하면서 사이클론 운동을 하여 배기관(10)에 설치된 입자포집부(11)에 포집되는 단계;In this step, the nanoparticles in the exhaust gas is subjected to a cyclone movement while passing through the magnetic field is collected in the particle collecting unit 11 installed in the exhaust pipe (10); 를 포함하여 이루어지는 것을 특징으로 하는 배기가스 나노입자 포집방법.Exhaust gas nanoparticle collection method characterized in that it comprises a.
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CN106622645A (en) * 2017-01-17 2017-05-10 西华大学 Low-energy-consumption magnetic type charge particle recovery device
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KR20200009499A (en) * 2018-07-19 2020-01-30 도창교 Waste gas treatment system using magnetic field and arc plazma
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