KR20130114401A - Diesel particulate filter coated diesel oxydation catalyst and de-nitrogen oxide catalyst - Google Patents

Diesel particulate filter coated diesel oxydation catalyst and de-nitrogen oxide catalyst Download PDF

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KR20130114401A
KR20130114401A KR1020120036725A KR20120036725A KR20130114401A KR 20130114401 A KR20130114401 A KR 20130114401A KR 1020120036725 A KR1020120036725 A KR 1020120036725A KR 20120036725 A KR20120036725 A KR 20120036725A KR 20130114401 A KR20130114401 A KR 20130114401A
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diesel
particle filter
oxidation catalyst
catalyst
denitrification
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KR1020120036725A
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Korean (ko)
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KR101351469B1 (en
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조항근
이강홍
이승현
김신한
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(주) 세라컴
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: A method for manufacturing a diesel particle filter on which a diesel oxidation catalyst and a denitrification oxide catalyst are coated is provided to remove soluble organic gas and a nitrogen oxide among particle materials contained in diesel exhaust gas at the same time and to produce the small effective diesel particle filter at low costs. CONSTITUTION: A method for manufacturing a diesel particle filter on which a diesel oxidation catalyst and a denitrification oxide catalyst are coated includes the following steps of: impregnating a diesel particle filter into a diesel oxidation catalyst mixture in order to coat the diesel oxidation catalyst mixture on an exhaust gas outflow line of the diesel particle filter (S101); impregnating the diesel particle filter into a denitrification oxide catalyst mixture in order to coat a denitrification oxide catalyst mixture on an exhaust gas inflow line of the diesel particle filter (S102); drying a gel particle filter (S105); and plasticizing the diesel particle filter (S107). [Reference numerals] (AA) Start; (BB) End; (S101) First impregnating step; (S103) Second impregnating step; (S105) Drying step; (S107) Plasticizing step

Description

디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법 {DIESEL PARTICULATE FILTER COATED DIESEL OXYDATION CATALYST AND DE-NITROGEN OXIDE CATALYST}DIESEL PARTICULATE FILTER COATED DIESEL OXYDATION CATALYST AND DE-NITROGEN OXIDE CATALYST}

본 발명은 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법에 관한 것으로, 더욱 상세하게는 디젤산화촉매와 탈질소산화물촉매가 디젤입차필터의 배기가스 유출라인과 유입라인에 교대로 코팅되어 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스 및 질소산화물을 동시에 제거할 수 있는 디젤입자필터의 제조방법에 관한 것이다.
The present invention relates to a method for producing a diesel particulate filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst, and more particularly, the diesel oxidation catalyst and the denitrification oxide catalyst are alternated with the exhaust gas outlet line and the inlet line of the diesel intake filter. The present invention relates to a method for manufacturing a diesel particle filter which is coated with and which can remove soluble organic gas and nitrogen oxide simultaneously in particulate matter contained in diesel exhaust gas.

본 발명은 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법에 관한 것으로, 더욱 상세하게는 디젤산화촉매와 탈질소산화물촉매가 디젤입차필터의 배기가스 유출라인과 유입라인에 교대로 코팅되어 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스 및 질소산화물을 동시에 제거할 수 있는 디젤입자필터의 제조방법에 관한 것이다.The present invention relates to a method for producing a diesel particulate filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst, and more particularly, the diesel oxidation catalyst and the denitrification oxide catalyst are alternated with the exhaust gas outlet line and the inlet line of the diesel intake filter. The present invention relates to a method for manufacturing a diesel particle filter which is coated with and which can remove soluble organic gas and nitrogen oxide simultaneously in particulate matter contained in diesel exhaust gas.

자동차의 배출가스 중에 함유되는 디젤 입자(Diesel Particulate)는 탄소를 주성분으로 하는 미립자로, 자동차의 엔진이 고속회전될 경우에는 배출되는 배기가스가 비교적 고온이므로 디젤 입자가 자연적으로 연소되지만, 자동차의 엔진이 저속으로 회전할 경우에는 디젤 입자의 연소가 잘 이루어지지 않고, 배기가스와 함께 대기중으로 방출되어 대기를 오염시키게 된다.Diesel particles contained in the exhaust gas of automobiles are carbon-based particulates. When the engine of a vehicle is rotated at high speed, the exhaust gas is relatively high and diesel particles are naturally burned. When the engine rotates at a low speed, combustion of diesel particles is not performed well, and it is released into the atmosphere together with the exhaust gas to pollute the atmosphere.

상기와 같이 디젤 입자로 인한 대기의 오염을 방지하기 위해 배출가스가 배출되는 배기기관에 세라믹 재질로 이루어진 디젤입자필터가 장착되어 디젤입자의 대기 방출을 억제하고 있다.As described above, a diesel particle filter made of a ceramic material is installed in an exhaust pipe through which exhaust gas is discharged to prevent air pollution due to diesel particles, thereby suppressing the emission of diesel particles into the air.

그러나, 종래에 디젤입자필터는 디젤산화촉매 장치가 디젤입자필터 본체와 별도로 구비되어 장치의 크기가 크기 때문에, 자동차에 적용할 때, 불편함이 있을 뿐만 아니라 제조비용이 고가인 문제점이 있었다.
However, in the related art, the diesel particle filter has a problem that the diesel oxidation catalyst device is provided separately from the diesel particle filter main body so that the size of the device is large.

본 발명의 목적은 디젤산화촉매와 탈질소산화물촉매가 디젤입차필터의 배기가스 유출라인 및 유입라인에 교대로 코팅되어 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스 및 질소산화물을 동시에 제거할 수 있으며, 크기가 작아 차량에 적용시에 효율적이고, 제조비용이 저렴한 디젤산화촉매와 탈질소산화물 촉매가 코팅된 디젤 입자 필터의 제조방법을 제공하는 것이다.
An object of the present invention is that the diesel oxidation catalyst and the denitrification oxide catalyst are alternately coated on the exhaust gas outlet line and the inlet line of the diesel intake filter to remove soluble organic gas and nitrogen oxide in the particulate matter contained in the diesel exhaust gas at the same time. The present invention provides a method for manufacturing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification catalyst, which is small in size and efficient in application to a vehicle and low in manufacturing cost.

본 발명의 목적은 디젤입자필터의 배기가스 유출라인에 디젤산화촉매 혼합물이 도포되도록 디젤입자필터를 디젤산화촉매 혼합물에 함침하는 제1함침단계, 상기 제1함침단계를 거친 디젤입자필터의 배기가스 유입라인에 탈질소산화물촉매 혼합물이 도포되도록 디젤입자필터를 탈질소산화물 촉매 혼합물에 함침하는 제2함침단계, 상기 제2함침단계를 거친 디젤입자필터를 건조하는 건조단계 및 상기 건조단계를 거친 디젤입자필터를 소성하는 소성단계로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법을 제공함에 의해 달성된다.An object of the present invention is a first impregnation step of impregnating a diesel particulate filter in a diesel oxidation catalyst mixture so that the diesel oxidation catalyst mixture is applied to an exhaust gas outlet line of the diesel particulate filter, exhaust gas of the diesel particle filter subjected to the first impregnation step. A second impregnation step of impregnating the diesel particulate filter into the denitrification oxide catalyst mixture so that the denitrification oxide catalyst mixture is applied to the inlet line, a drying step of drying the diesel particle filter subjected to the second impregnation step, and a diesel having passed the drying step It is achieved by providing a method for producing a diesel particulate filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that the firing step of firing the particle filter.

본 발명의 바람직한 특징에 따르면, 상기 제1함침단계는 디젤입자필터의 배기가스 유입라인를 밀봉한 후에 디젤산화촉매 혼합물에 함침하여 이루어지며, 상기 제2함침단계는 상기 제1함침단계를 거쳐 디젤산화촉매 혼합물이 코팅된 디젤입자필터의 배기가스 유입라인을 개방한 후에 배기가스 유출라인을 밀봉하고 탈질소산화물촉매 혼합물에 함침하여 이루어지는 것으로 한다.According to a preferred feature of the invention, the first impregnation step is performed by impregnating the diesel oxidation catalyst mixture after sealing the exhaust gas inlet line of the diesel particulate filter, the second impregnation step is the diesel oxidation through the first impregnation step After the exhaust gas inlet line of the diesel particulate filter coated catalyst mixture is opened, the exhaust gas outlet line is sealed and impregnated with the denitrification oxide catalyst mixture.

본 발명의 더 바람직한 특징에 따르면, 상기 디젤산화촉매 혼합물은 백금 화합물이 0.5 내지 10 중량부 함침된 활성 알루미나 10 내지 80 중량부, 조촉매성분이 0.1 내지 5 중량부 담지된 세륨산화물 10 내지 50 중량부, 복합 금속산화물 5 내지 40 중량부 및 금속산화물 0.5 내지 10 중량부로 이루어지는 것으로 한다.According to a more preferable feature of the invention, the diesel oxidation catalyst mixture is 10 to 80 parts by weight of activated alumina impregnated with 0.5 to 10 parts by weight of platinum compound, 10 to 50 parts by weight of cerium oxide supported by 0.1 to 5 parts by weight of the promoter component It is supposed to consist of 5 to 40 parts by weight of the composite metal oxide and 0.5 to 10 parts by weight of the metal oxide.

본 발명의 더욱 바람직한 특징에 따르면, 상기 백금 화합물은 포타슘플라티늄클로라이드, 암모늄플라티늄티오시아네이트, 아민-수용성플라티늄하이드록사이드 및 클로로플라티닉산으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the present invention, the platinum compound is composed of at least one selected from the group consisting of potassium platinum chloride, ammonium platinum thiocyanate, amine-soluble platinum hydroxide and chloroplatinic acid.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 활성 알루미나는 γ-, θ-, α- 알루미나로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the activated alumina is to be made of one or more selected from the group consisting of γ-, θ-, α-alumina.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 탈질소산화물촉매 혼합물은 지지체 상에 0.5 내지 4 g/in3로 코팅되는 알루미나 담체에 전체 촉매 조성물에 대하여 0.1 내지 10 중량부의 은 성분과, 0.0001 내지 0.5 중량부의 백금족 촉매성분이 담지되어 이루어지는 것으로 한다.According to a further preferred feature of the invention, the denitrification oxide catalyst mixture is 0.1 to 10 parts by weight of the silver component relative to the total catalyst composition on alumina carrier coated with 0.5 to 4 g / in 3 on the support, 0.0001 to 0.5 It is supposed to be carried by carrying out the weight part platinum group catalyst component.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 백금족 촉매성분은 Pt, Pd, Ru, Ir 및 Rh로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the invention, the platinum group catalyst component is to be made of one or more selected from the group consisting of Pt, Pd, Ru, Ir and Rh.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 은 성분은 환원상태의 염화은, 질산은 및 황산은으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the invention, the silver component is to be made of one or more selected from the group consisting of reduced silver chloride, silver nitrate and silver sulfate.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 건조단계는 120 내지 150℃의 온도에서 15 내지 25시간 동안 이루어지는 것으로 한다.According to a further preferred feature of the invention, the drying step is to be carried out for 15 to 25 hours at a temperature of 120 to 150 ℃.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 소성단계는 500 내지 550℃의 온도에서 5 내지 10시간 동안 이루어지는 것으로 한다.
According to a further preferred feature of the invention, the firing step is to be made for 5 to 10 hours at a temperature of 500 to 550 ℃.

본 발명에 따른 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤 입자 필터의 제조방법은 디젤산화촉매와 탈질소산화물촉매가 디젤입차필터의 배기가스 유출라인 및 유입라인에 교대로 코팅되어 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스 및 질소산화물을 동시에 제거할 수 있으며, 크기가 작아 차량에 적용시에 효율적이고, 제조비용이 저렴한 디젤 입자 필터를 제공한다.
In the method for preparing a diesel particulate filter coated with the diesel oxidation catalyst and the denitrification oxide catalyst according to the present invention, the diesel oxidation catalyst and the denitrification oxide catalyst are alternately coated on the exhaust gas outlet line and the inlet line of the diesel inlet filter, and thus the diesel exhaust gas. The present invention provides a diesel particle filter that can remove soluble organic gas and nitrogen oxide from the particulate matter contained at the same time.

도 1은 본 발명에 따른 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법을 나타낸 순서도이다.
도 2는 본 발명에 사용되는 디젤입자필터를 나타낸 사시도이다.
도 3은 본 발명에 따른 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조과정을 나타낸 제조공정도이다.1 is a flowchart illustrating a method of manufacturing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst according to the present invention.
Figure 2 is a perspective view showing a diesel particle filter used in the present invention.
3 is a manufacturing process diagram illustrating a manufacturing process of a diesel particulate filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst according to the present invention.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법은 디젤입자필터의 배기가스 유출라인(10)에 디젤산화촉매 혼합물이 도포되도록 디젤입자필터를 디젤산화촉매 혼합물에 함침하는 제1함침단계(S101), 상기 제1함침단계(S101)를 거친 디젤입자필터의 배기가스 유입라인(20)에 탈질소산화물촉매 혼합물이 도포되도록 디젤입자필터를 탈질소산화물 촉매 혼합물에 함침하는 제2함침단계(S103), 상기 제2함침단계(S103)를 거친 디젤입자필터를 건조하는 건조단계(S105) 및 상기 건조단계(S105)를 거친 디젤입자필터를 소성하는 소성단계(S107)로 이루어진다.
In the method for producing a diesel particulate filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst according to the present invention, the diesel particulate filter is applied to the diesel oxidation catalyst mixture so that the diesel oxidation catalyst mixture is applied to the exhaust gas outlet line 10 of the diesel particulate filter. Impregnating the diesel particulate filter to the denitrification catalyst mixture so that the denitrification oxide catalyst mixture is applied to the exhaust gas inlet line 20 of the diesel particulate filter that has undergone the first impregnation step S101 and the first impregnation step S101. Firing step S107 of impregnating the second impregnating step (S103), drying the diesel particle filter of the second impregnation step (S103) and firing the diesel particle filter of the drying step (S105) (S107). )

상기 제1함침단계(S101)는 디젤입자필터의 배기가스 유출라인(10)에 디젤산화촉매 혼합물이 도포되도록 디젤입자필터를 디젤산화촉매 혼합물에 함침하는 단계로, 본 발명에 사용되는 디젤입자필터는 배기가스 유입라인(20)의 말단이 막혀있어 디젤입자필터의 배기가스가 유출되는 방향을 디젤산화촉매 혼합물에 함침하게 되면 배기가스 유입라인(20)에는 디젤산화촉매 혼합물이 도포되지 않고, 배기가스 유출라인(10)에만 디젤산화촉매 혼합물이 도포된다.The first impregnation step (S101) is a step of impregnating the diesel particulate filter in the diesel oxidation catalyst mixture so that the diesel oxidation catalyst mixture is applied to the exhaust gas outlet line 10 of the diesel particulate filter, the diesel particle filter used in the present invention. When the end of the exhaust gas inlet line 20 is blocked, and the diesel oxidation catalyst mixture is impregnated in the direction in which the exhaust gas of the diesel particulate filter flows out, the diesel oxidation catalyst mixture is not applied to the exhaust gas inlet line 20. The diesel oxidation catalyst mixture is applied only to the gas outlet line 10.

단, 디젤입자필터를 단순히 디젤산화촉매 혼합물에 함침하는 경우에는 배기가스 유입라인(20)으로 디젤산화촉매 혼합물이 유입되지 않도록 해야하기 때문에, 디젤입자필터를 완전히 함침할 수 없어 배기가스 유출라인(10)의 말단부위는 디젤산화촉매 혼합물이 완전하게 도포되지 않는 문제점이 발생하는데, 이러한 문제점을 해결하기 위해 본 발명의 제1함침단계(S101)는 디젤입자필터의 배기가스 유입라인을(20) 밀봉부재(30)로 밀봉한 후에 디젤산화촉매 혼합물에 완전하게 함침하여 이루어지는 것이 바람직하다.However, when the diesel particle filter is simply impregnated into the diesel oxidation catalyst mixture, the diesel oxidation catalyst mixture should not be introduced into the exhaust gas inlet line 20, so that the diesel particle filter cannot be completely impregnated. 10) is a problem that the diesel oxidation catalyst mixture is not completely applied, the end portion of the first impregnation step (S101) of the present invention to the exhaust gas inlet line of the diesel particulate filter (20) After sealing with the sealing member 30, the diesel oxidation catalyst mixture is preferably impregnated completely.

상기 디젤산화촉매 혼합물은 백금 화합물이 0.5 내지 10 중량부 함침된 활성 알루미나 10 내지 80 중량부, 조촉매성분이 0.1 내지 5 중량부 담지된 세륨산화물 10 내지 50 중량부, 복합 금속산화물 5 내지 40 중량부 및 금속산화물 0.5 내지 10 중량부로 이루어진다.The diesel oxidation catalyst mixture is 10 to 80 parts by weight of activated alumina impregnated with 0.5 to 10 parts by weight of platinum compound, 10 to 50 parts by weight of cerium oxide loaded with 0.1 to 5 parts by weight of the cocatalyst component, and 5 to 40 parts by weight of the composite metal oxide. Part and 0.5 to 10 parts by weight of the metal oxide.

이때, 상기 백금 화합물은 포타슘플라티늄클로라이드, 암모늄플라티늄티오시아네이트, 아민-수용성플라티늄하이드록사이드 및 클로로플라티닉산으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지며, 상기 활성 알루미나는 γ-, θ-, α- 알루미나로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것이 바람직하다.
At this time, the platinum compound is at least one selected from the group consisting of potassium platinum chloride, ammonium platinum thiocyanate, amine-soluble platinum hydroxide and chloroplatinic acid, the active alumina is γ-, θ-, α -At least one selected from the group consisting of alumina.

상기 제2함침단계(S103)는 상기 제1함침단계(S101)를 거친 디젤입자필터의 배기가스 유입라인(20)에 탈질소산화물촉매 혼합물이 도포되도록 디젤입자필터를 탈질소산화물촉매 혼합물에 함침하는 단계로, 본 발명에 사용되는 디젤입자필터는 배기가스 유출라인(10)의 말단이 막혀있어 디젤입자필터의 배기가스 유입되는 방향을 탈질소산화물촉매 혼합물에 함침하게 되면 배기가스 유출라인(10)에는 탈질소산화물촉매 혼합물이 도포되지 않고, 배기가스 유입라인에만 탈질소산화물촉매 혼합물이 도포된다.In the second impregnation step (S103), the diesel particulate filter is impregnated with the denitrification oxide catalyst mixture such that the denitrification oxide catalyst mixture is applied to the exhaust gas inlet line 20 of the diesel particle filter passed through the first impregnation step (S101). In the step, the diesel particulate filter used in the present invention is blocked at the end of the exhaust gas outlet line 10, the exhaust gas outlet line 10 is impregnated in the denitrification oxide catalyst mixture in the direction of the exhaust gas inlet of the diesel particle filter. ) Is not applied to the denitrification oxide catalyst mixture, but only to the exhaust gas inlet line.

단, 디젤입자필터를 단순히 탈질소산화물촉매 혼합물에 함침하는 경우에는 배기가스 유출라인(10)으로 탈질소산화물촉매 혼합물이 유입되지 않도록 해야하기 때문에, 디젤입자필터를 완전히 함침할 수 없어 배기가스 유입라인(20)의 말단부위는 탈질소산화물촉매 혼합물이 완전하게 도포되지 않는 문제점이 발생하는데, 이러한 문제점을 해결하기 위해 본 발명의 제2함침단계(S103)는 밀봉된 디젤입자필터의 배기가스 유입라인(20)을 개봉한 후에 배기가스 유출라인(10)을 밀봉부재(30)로 밀봉하고, 탈질소산화물촉매 혼합물에 완전하게 함침하여 이루어지는 것이 바람직하다.However, when the diesel particle filter is simply impregnated with the denitrification oxide catalyst mixture, the denitrification oxide catalyst mixture should be prevented from flowing into the exhaust gas outlet line 10. Therefore, the diesel particle filter cannot be impregnated completely so that the exhaust gas inflow. The end of the line 20 has a problem that the denitrification oxide catalyst mixture is not applied completely, in order to solve this problem, the second impregnation step (S103) of the present invention is the exhaust gas inlet of the sealed diesel particle filter After opening the line 20, the exhaust gas outlet line 10 is preferably sealed by the sealing member 30 and completely impregnated with the denitrification oxide catalyst mixture.

상기 탈질소산화물촉매 혼합물은 지지체 상에 0.5 내지 4 g/in3로 코팅되는 알루미나 담체에 전체 촉매 조성물에 대하여 0.1 내지 10 중량부의 은 성분과, 0.0001 내지 0.5 중량부의 백금족 촉매성분이 담지되어 이루어진다.The denitrification oxide catalyst mixture is composed of 0.1 to 10 parts by weight of silver component and 0.0001 to 0.5 parts by weight of platinum group catalyst component based on the total catalyst composition on an alumina carrier coated with 0.5 to 4 g / in 3 on a support.

상기 백금족 촉매성분은 Pt, Pd, Ru, Ir 및 Rh로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지며, 상기 은 성분은 환원상태의 염화은, 질산은 및 황산은으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것이 바람직하다.The platinum group catalyst component is one or more selected from the group consisting of Pt, Pd, Ru, Ir, and Rh, and the silver component is preferably one or more selected from the group consisting of silver chloride, silver nitrate, and silver sulfate in a reduced state. .

더욱 상세하게는, 상기 탈질소산화물촉매 혼합물은 증류수에 알루미나를 첨가한 다음 습식 볼밀을 이용하여 균일한 알루미나 슬러리를 제조한 후 상기 슬러리를 실리콘 카바이드 또는 코디어라이트 허니컴 성형체에 코팅하고, 상온에서 건조시킨 후에 소성로에서 건조 및 소성하여 제조된 허니컴 성형체를 염화은, 질산은 및 황산은으로 이루어진 그룹으로부터 선태된 하나 이상의 성분과 백금족 금속염을 혼합한 수용액에 함침하여 이루어진다.
More specifically, the denitrification oxide catalyst mixture is prepared by adding alumina to distilled water, preparing a uniform alumina slurry using a wet ball mill, and then coating the slurry on silicon carbide or cordierite honeycomb molded bodies and drying at room temperature. The honeycomb molded body produced by drying and firing in a kiln and then immersed in an aqueous solution in which a platinum group metal salt and at least one component selected from the group consisting of silver chloride, silver nitrate and silver sulfate are mixed.

상기 건조단계(S105)는 상기 제2함침단계(S103)를 거쳐 탈질소산화물촉매 혼합물이 코팅된 디젤입자필터의 배기가스 유출라인(10)에 밀봉부재(30)를 제거하여 유출라인(10)을 개방하고 건조하는 단계로, 상기 제1함침단계(S101)를 거쳐 배기가스 유출라인(10)의 표면에 도포된 디젤산화촉매 혼합물과, 상기 제2함침단계(S103)를 거쳐 배기가스 유입라인(20)의 표면에 도포된 탈질소산화물 촉매 혼합물을 건조하는 단계다.The drying step (S105) is through the second impregnation step (S103) to remove the sealing member 30 in the exhaust gas outlet line 10 of the diesel particulate filter coated with a denitrification oxide catalyst mixture to the outlet line 10 The step of opening and drying the diesel oxidation catalyst mixture applied to the surface of the exhaust gas outlet line 10 through the first impregnation step (S101), and the exhaust gas inlet line through the second impregnation step (S103). Drying the denitrification catalyst mixture applied to the surface of (20).

이때, 상기 건조단계(S105)는 공지의 건조기를 이용하여 120 내지 150℃의 온도에서 15 내지 25시간 동안 이루어지는데 건조기의 온도가 상온에서 120 내지 150℃에 도달할 때까지 분당 3℃씩 승온시키는 것이 바람직하다.At this time, the drying step (S105) is made for 15 to 25 hours at a temperature of 120 to 150 ℃ using a known dryer to increase the temperature by 3 ℃ per minute until the temperature of the dryer reaches 120 to 150 ℃ at room temperature It is preferable.

이러한 건조단계(S105)를 거치면, 상기 디젤입자필터의 배기가스 유출라인(10) 및 유입라인(10)에 도포된 디젤산화촉매 혼합물과 탈질소산화물촉매 혼합물이 건조된다.
Through this drying step (S105), the diesel oxidation catalyst mixture and the denitrification oxide catalyst mixture applied to the exhaust gas outlet line 10 and the inlet line 10 of the diesel particle filter is dried.

상기 소성단계(S107)는 상기 건조단계(S105)를 거친 디젤입자필터를 소성하는 단계로, 상기 건조단계(S105)를 거친 디젤입자필터를 공지의 소성로에 투입하고 500 내지 550℃의 온도에서 5 내지 10시간 소성하여 이루어진다.The firing step (S107) is a step of firing the diesel particle filter passed through the drying step (S105), the diesel particle filter passed through the drying step (S105) is put into a known firing furnace and 5 at a temperature of 500 to 550 ℃ It is made by baking for 10 hours.

이러한 소성단계(S107)를 거치면, 디젤입자필터의 배기가스 유출라인(10) 및 유입라인(20)에 디젤산화촉매와 탈질소산화물 촉매가 견고하게 형성된다.
Through this firing step (S107), the diesel oxidation catalyst and the denitrification catalyst are firmly formed in the exhaust gas outlet line 10 and the inlet line 20 of the diesel particle filter.

상기의 제1함침단계(S101), 제2함침단계(S103), 건조단계(S105) 및 소성단계(S107)로 이루어지는 디젤산화촉매와 탈질소산화물 촉매가 코팅된 디젤입자필터의 제조방법은 디젤산화촉매와 탈질소산화물 촉매가 디젤입차필터의 배기가스 유출라인(10) 및 유입라인(20)에 교대로 코팅되어 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스 및 질소산화물을 동시에 제거할 수 있는 디젤입자필터를 제공한다.The method for producing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification catalyst comprising the first impregnation step (S101), the second impregnation step (S103), the drying step (S105), and the firing step (S107) may include diesel. The oxidation catalyst and the denitrification oxide catalyst are alternately coated on the exhaust gas outlet line 10 and the inlet line 20 of the diesel intake filter to simultaneously remove soluble organic gas and nitrogen oxide from particulate matter contained in the diesel exhaust gas. To provide a diesel particle filter.

또한, 디젤배기가스에 함유된 입자상 물질 중 용해성 유기가스를 제거하기 위해 디젤산화촉매 장치를 별도로 구비할 필요가 없기 때문에 크기가 작고, 제조비용이 저렴한 디젤입자필터를 제공한다.
In addition, since the diesel oxidation catalyst device does not need to be separately provided to remove soluble organic gas in the particulate matter contained in the diesel exhaust gas, it provides a diesel particle filter having a small size and low manufacturing cost.

S101 ; 제1함침단계
S103 ; 제2함침단계
S105 ; 건조단계
S107 ; 소성단계
10 ; 유출라인
20 ; 유입라인
30 ; 밀봉부재S101; 1st impregnation step
S103; Second impregnation step
S105; Drying step
S107; Firing stage
10; Outflow Line
20; Inflow line
30; Sealing member

Claims (10)

디젤입자필터의 배기가스 유출라인에 디젤산화촉매 혼합물이 도포되도록 디젤입자필터를 디젤산화촉매 혼합물에 함침하는 제1함침단계;
상기 제1함침단계를 거친 디젤입자필터의 배기가스 유입라인에 탈질소산화물촉매 혼합물이 도포되도록 디젤입자필터를 탈질소산화물 촉매 혼합물에 함침하는 제2함침단계;
상기 제2함침단계를 거친 디젤입자필터를 건조하는 건조단계; 및
상기 건조단계를 거친 디젤입자필터를 소성하는 소성단계;로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
A first impregnation step of impregnating the diesel particulate filter in the diesel oxidation catalyst mixture such that the diesel oxidation catalyst mixture is applied to the exhaust gas outlet line of the diesel particulate filter;
A second impregnation step of impregnating the diesel particulate filter in the denitrification oxide catalyst mixture such that the denitrification oxide catalyst mixture is applied to the exhaust gas inlet line of the diesel particle filter which has passed the first impregnation step;
A drying step of drying the diesel particle filter passed through the second impregnation step; And
A firing step of firing the diesel particle filter after the drying step; Method for producing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that consisting of.
청구항 1에 있어서,
상기 제1함침단계는 디젤입자필터의 배기가스 유입라인을 밀봉한 후에 디젤산화촉매 혼합물에 함침하여 이루어지며, 상기 제2함침단계는 상기 제1함침단계를 거쳐 디젤산화촉매 혼합물이 코팅된 디젤입자필터의 배기가스 유입라인을 개방한 후에 배기가스 유출라인을 밀봉하고 탈질소산화물촉매 혼합물에 함침하여 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 1,
The first impregnation step is performed by impregnating the diesel oxidation catalyst mixture after sealing the exhaust gas inlet line of the diesel particulate filter, the second impregnation step is the diesel particles coated with the diesel oxidation catalyst mixture through the first impregnation step A method of manufacturing a diesel particulate filter coated with a diesel oxidation catalyst and a denitrogen oxide catalyst, characterized by sealing the exhaust gas outlet line after opening the exhaust gas inlet line of the filter and impregnating the denitrogen oxide catalyst mixture.
청구항 1에 있어서,
상기 디젤산화촉매 혼합물은 백금 화합물이 0.5 내지 10 중량부 함침된 활성 알루미나 10 내지 80 중량부, 조촉매성분이 0.1 내지 5 중량부 담지된 세륨산화물 10 내지 50 중량부, 복합 금속산화물 5 내지 40 중량부 및 금속산화물 0.5 내지 10 중량부로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 1,
The diesel oxidation catalyst mixture is 10 to 80 parts by weight of activated alumina impregnated with 0.5 to 10 parts by weight of platinum compound, 10 to 50 parts by weight of cerium oxide loaded with 0.1 to 5 parts by weight of the cocatalyst component, and 5 to 40 parts by weight of the composite metal oxide. Part and a method for producing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that consisting of 0.5 to 10 parts by weight of the metal oxide.
청구항 3에 있어서,
상기 백금 화합물은 포타슘플라티늄클로라이드, 암모늄플라티늄티오시아네이트, 아민-수용성플라티늄하이드록사이드 및 클로로플라티닉산으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 3,
The platinum compound is coated with a diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that at least one selected from the group consisting of potassium platinum chloride, ammonium platinum thiocyanate, amine-soluble platinum hydroxide and chloroplatinic acid. Method for producing a diesel particle filter.
청구항 3에 있어서,
상기 활성 알루미나는 γ-, θ-, α- 알루미나로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 3,
The activated alumina is a method for producing a diesel particle filter coated diesel oxidation catalyst and denitrification oxide catalyst, characterized in that at least one selected from the group consisting of γ-, θ-, α- alumina.
청구항 1에 있어서,
상기 탈질소산화물촉매 혼합물은 지지체 상에 0.5 내지 4 g/in3로 코팅되는 알루미나 담체에 전체 촉매 조성물에 대하여 0.1 내지 10 중량부의 은 성분과, 0.0001 내지 0.5 중량부의 백금족 촉매성분이 담지되어 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 1,
The denitrification oxide catalyst mixture is composed of 0.1 to 10 parts by weight of the silver component and 0.0001 to 0.5 parts by weight of the platinum group catalyst component on an alumina carrier coated with 0.5 to 4 g / in 3 on the support. A method for producing a diesel particle filter coated with a diesel oxidation catalyst and a denitrification oxide catalyst.
청구항 6에 있어서,
상기 백금족 촉매성분은 Pt, Pd, Ru, Ir 및 Rh로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method of claim 6,
The platinum group catalyst component is Pt, Pd, Ru, Ir and Rh method for producing a diesel particulate filter coated diesel oxidation catalyst and denitrification catalyst, characterized in that consisting of at least one selected from the group consisting of.
청구항 6에 있어서,
상기 은 성분은 환원상태의 염화은, 질산은 및 황산은으로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method of claim 6,
The silver component is a method for producing a diesel particle filter coated diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that at least one selected from the group consisting of silver chloride, silver nitrate and silver sulfate in the reduced state.
청구항 1에 있어서,
상기 건조단계는 120 내지 150℃의 온도에서 15 내지 25시간 동안 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.
The method according to claim 1,
The drying step is a method for producing a diesel particle filter coated diesel oxidation catalyst and denitrification oxide catalyst, characterized in that for 15 to 25 hours at a temperature of 120 to 150 ℃.
청구항 1에 있어서,
상기 소성단계는 500 내지 550℃의 온도에서 5 내지 10시간 동안 이루어지는 것을 특징으로 하는 디젤산화촉매와 탈질소산화물촉매가 코팅된 디젤입자필터의 제조방법.The method according to claim 1,
The firing step is a method for producing a diesel particle filter coated diesel oxidation catalyst and a denitrification oxide catalyst, characterized in that for 5 to 10 hours at a temperature of 500 to 550 ℃.
KR1020120036725A 2012-04-09 2012-04-09 Diesel particulate filter coated diesel oxydation catalyst and de-nitrogen oxide catalyst KR101351469B1 (en)

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