KR20240067585A - Remanufacturing Method on Used Catalytic Converter for Vehicle - Google Patents
Remanufacturing Method on Used Catalytic Converter for Vehicle Download PDFInfo
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- catalytic converter
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000011069 regeneration method Methods 0.000 claims abstract description 18
- 230000001172 regenerating effect Effects 0.000 claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000004913 activation Effects 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 230000003213 activating effect Effects 0.000 claims abstract description 4
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 13
- 239000004480 active ingredient Substances 0.000 claims description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 10
- 239000010948 rhodium Substances 0.000 claims description 6
- 238000005470 impregnation Methods 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 description 27
- 238000001994 activation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003929 acidic solution Substances 0.000 description 6
- 239000003637 basic solution Substances 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- 239000000356 contaminant Substances 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Classifications
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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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/46—Ruthenium, rhodium, osmium or iridium
- B01J23/464—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/04—Exhaust treating devices having provisions not otherwise provided for for regeneration or reactivation, e.g. of catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
본 발명은 차량용 촉매장치의 재생 방법에 관한 것이다.
본 발명에 따른 차량용 촉매장치의 재생 방법은 재생대상장치에 고온의 압축 수증기를 분사하는 1차 세정단계(S100)와 1차 세정된 재생대상장치를 초음파 세정하는 2차 세정단계(S200)와 2차 세정된 재생대상장치를 촉매활성성분으로 활성화시키는 활성화단계(S300)를 포함한다.The present invention relates to a method for regenerating a catalytic device for a vehicle.
The method for regenerating a catalytic device for a vehicle according to the present invention includes a first cleaning step (S100) of spraying high-temperature compressed water vapor on the device to be regenerated, and a second cleaning step (S200) of ultrasonic cleaning the first cleaned device to be regenerated. It includes an activation step (S300) of activating the first cleaned regeneration target device with a catalytically active component.
Description
본 발명은 차량용 촉매장치의 재생 방법에 관한 것이다.The present invention relates to a method for regenerating a catalytic converter for a vehicle.
디젤기관에서 발생되는 배기가스는 기체, 액체, 고체상의 유무기 혼합물로 이루어져 있고, 대표적으로 일산화탄소(CO), 미연 총 탄화수소(THC), 질소 산화물(NOx), 및 입자상 물질(PM:particulate matter)이기 때문에 이를 저감하기 위한 많은 후처리 기술들이 개발되었거나 현재 계속 상용화되고 있다.Exhaust gases generated from diesel engines are composed of gaseous, liquid, and solid organic and inorganic mixtures, and are representative of carbon monoxide (CO), unburned total hydrocarbons (THC), nitrogen oxides (NOx), and particulate matter (PM). Because of this, many post-processing technologies have been developed or are currently being commercialized to reduce this.
CO와 미연소 HC를 제거하기 위해 디젤 산화촉매(DOC:diesel oxidation catalyst) 기술이 이용되고, 입자상 물질은 디젤입자상 필터(DPF:diesel particulate filter) 기술로 제거되며, NOx를 제거하기 위해서는 선택적 촉매 환원법(SCR:selective catalytic reduction)이 이용되고 있는 등 현재 보다 나은 성능을 위해서 많은 연구개발이 전 세계적으로 이루어지고 있는 실정이다.Diesel oxidation catalyst (DOC) technology is used to remove CO and unburned HC, particulate matter is removed using diesel particulate filter (DPF) technology, and selective catalytic reduction is used to remove NOx. Currently, a lot of research and development is being carried out around the world for better performance, such as the use of selective catalytic reduction (SCR).
전 세계적으로 초기에 디젤기관에서 발생하는 대기오염물을 저감하기 위해서 주로 CO와 HC를 산화시키는 DOC를 중심으로 상용화가 되었으며 그 다음 입자상물질까지 제거하는 DPF가 상용화가 되고 SCR 의 경우는 현재 일부에서 상용 운전을 하고 있으며 향후 몇년내에 우리나라 뿐 아니라 전 세계에서 상용화가 될 것이다. Initially, DOC, which mainly oxidizes CO and HC, was commercialized around the world to reduce air pollutants generated from diesel engines. Then, DPF, which removes particulate matter, was commercialized, and SCR is currently commercialized in some areas. It is being driven and will be commercialized not only in Korea but around the world within the next few years.
디젤 자동차는 가솔린 자동차에 비해 공기 과잉 상태에서 운전 되므로 연비가 좋고 CO2 배출이 적으며 엔진의 수명이 높아 그 효용성의 가치가 높아 우리나라를 비롯한 유럽 및 전 세계적으로 승용차를 포함한 소형차량에서부터 대형차량까지 폭넓게 사용하고 있는 실정이다.Diesel cars are driven with excess air compared to gasoline cars, so they are more fuel efficient, emit less CO2 , and have a longer engine life, so their utility value is high and they are widely used in everything from small vehicles including passenger cars to large vehicles in Korea, Europe, and around the world. It is being used widely.
이렇게 많이 사용되는 디젤 자동차에서 발생되는 배출오염물질인 CO, HC, PM 등의 오염물질을 제거하는 매연여과장치에는 Pt와 Pd 등과 같은 귀금속이 담지되어 있어 촉매작용을 통해 상기의 오염물질을 산화시켜 인체에 무해한 H2O, CO2 등으로 전환시킨다. The exhaust filtration device that removes pollutants such as CO, HC, and PM, which are exhaust pollutants generated from widely used diesel vehicles, contains precious metals such as Pt and Pd, and oxidizes the pollutants through catalytic action. It is converted into H 2 O, CO 2 , etc., which are harmless to the human body.
그러나 촉매는 장기간 운행에 노출되면 자동차 배기가스에 포함되어 있는 각종 불순물질과 오염물질로 인하여 촉매의 기능을 서서히 잃어가게 된다. 따라서 수명이 지난 촉매의 경우, 배기가스 중의 오염물질 제거 효율이 현저히 저하되어 자동차 배출가스 허용기준을 충족시키지 못할 뿐만 아니라 제거되지 않은 오염물질을 그대로 대기에 배출하게 되어 심각한 대기오염의 원인이 된다. 현재 우리나라의 경우, DOC 및 DPF는 거의 정부와 지자체 지원으로 장착되어 움직이고 있으나 이들이 수명을 다한 경우 신품으로는 더 이상의 계속적인 지원을 해줄 수 없는 상황이다. However, when a catalyst is exposed to long-term operation, it gradually loses its function due to various impurities and pollutants contained in automobile exhaust gas. Therefore, in the case of a catalyst whose lifespan has expired, the efficiency of removing pollutants in exhaust gas is significantly reduced, failing to meet automobile emission standards, and also causing serious air pollution by discharging unremoved pollutants into the atmosphere. Currently, in Korea, DOC and DPF are mostly installed and operated with the support of the government and local governments, but when these have reached the end of their lifespan, continuous support cannot be provided with new products.
이에, 본 발명자는 폐기되는 DPF를 대상으로 촉매를 재제조하여 DPF의 성능이 신제품 성능 대비 90% 이상, 바람직하게는, 95% 이상의 품질을 갖기 위한 재생방법을 개발하여 본 발명에 이르게 되었다. Accordingly, the present inventor developed a regeneration method for remanufacturing a catalyst for discarded DPF to have the quality of the DPF at least 90%, preferably 95% or more, compared to the performance of a new product, and came to the present invention.
상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 수명이 다한 차량용 촉매장치의 불순물 및 오염물질을 1차 및 2차 세정공정으로 제거하고, 세정처리된 촉매장치의 촉매활성을 향상시킨 차량용 촉매장치의 재생 방법을 제공하는 것이다. The purpose of the present invention to solve the above problems is to provide a vehicle catalyst device that removes impurities and contaminants from an expired vehicle catalyst device through primary and secondary cleaning processes and improves the catalytic activity of the cleaned catalyst device. It is to provide a method of reproduction.
상기 과제를 해결하기 위한 본 발명의 차량용 촉매장치의 재생 방법은 재생대상장치에 고온의 압축 수증기를 분사하는 1차 세정단계(S100)와 1차 세정된 재생대상장치를 초음파 세정하는 2차 세정단계(S200)와 2차 세정된 재생대상장치를 촉매활성성분으로 활성화시키는 활성화단계(S300)를 포함한다.The regeneration method of a vehicle catalyst device of the present invention to solve the above problem includes a first cleaning step (S100) of spraying high-temperature compressed water vapor on the regeneration target device and a second cleaning step of ultrasonic cleaning the first cleaned regeneration target device. (S200) and an activation step (S300) of activating the secondary cleaned regeneration target device with a catalytically active ingredient.
..
상기 1차 세정단계에서는 350 내지 500℃에서 5 내지 10 bar의 압축 수증기를 1 내지 3시간 분사하는 것을 특징으로 한다.In the first cleaning step, compressed water vapor of 5 to 10 bar is sprayed at 350 to 500 ° C. for 1 to 3 hours.
상기 2차 세정단계(S200)에서는 1차 세정된 재생대상장치를 20 내지 50 kHz의 초음파에서 1 내지 3시간 초음파 처리한 후, 120 내지 180℃ 에서 3 내지 6시간 건조하는 것을 특징으로 한다.In the second cleaning step (S200), the primary cleaned playback device is sonicated at 20 to 50 kHz for 1 to 3 hours and then dried at 120 to 180°C for 3 to 6 hours.
상기 활성화단계(S300)에서는 백금(Pt), 로듐(Rh) 및 팔라듐(Pd) 중 적어도 어느 하나를 포함하는 촉매활성성분이 포함된 함침액에 함침한 후 함침처리된 재생대상장치를 건조 및 배소하는 것을 특징으로 한다.In the activation step (S300), the impregnated regeneration target device is dried and roasted after being impregnated with an impregnation solution containing a catalytically active ingredient containing at least one of platinum (Pt), rhodium (Rh), and palladium (Pd). It is characterized by:
상기 활성화단계(S300)에서는 함침처리된 재생대상장치를 100 내지 150 ℃에서 8 내지 12시간 건조한 후, 450 내지 600℃에서 2 내지 4시간 배소하는 것을 특징으로 한다.In the activation step (S300), the impregnated regeneration target device is dried at 100 to 150°C for 8 to 12 hours and then roasted at 450 to 600°C for 2 to 4 hours.
상술한 바와 같이, 본 발명에 따른 차량용 촉매장치의 재생 방법에 의하면, 수명이 다한 차량용 촉매장치의 불순물 및 오염물질을 1차 및 2차 세정공정으로 제거하고, 세정처리된 촉매장치의 촉매활성을 향상시켜 신제품 대비 90% 이상의 촉매활성을 갖는 효과가 있다.As described above, according to the method for regenerating a vehicle catalyst device according to the present invention, impurities and contaminants of an expired vehicle catalyst device are removed through primary and secondary cleaning processes, and the catalytic activity of the cleaned catalyst device is reduced. It has the effect of improving catalytic activity by more than 90% compared to new products.
본 발명에 따른 차량용 촉매장치의 재생 방법에 의하면, 폐기되는 차량용 촉매장치를 재생하여 자원을 절약할 수 있고, 경제적인 효과가 있다.According to the method for regenerating a catalytic device for a vehicle according to the present invention, resources can be saved by regenerating a discarded catalytic device for a vehicle, and there is an economic effect.
도 1은 본 발명에 따른 차량용 촉매장치의 재생 방법의 순서도를 보여주는 일실시예.
도 2는 본 발명에 따른 차량용 촉매장치의 재생 방법의 순서도를 보여주는 다른 실시예. 1 is an embodiment showing a flow chart of a method for regenerating a catalytic device for a vehicle according to the present invention.
Figure 2 is another embodiment showing a flow chart of a method for regenerating a catalytic device for a vehicle according to the present invention.
본 발명의 구체적 특징 및 이점들은 이하에서 첨부도면을 참조하여 상세히 설명한다. 이에 앞서 본 발명에 관련된 기능 및 그 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 구체적인 설명을 생략하기로 한다.Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. Prior to this, if it is determined that a detailed description of the functions and configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.
본 발명에서 사용된 용어 '재생대상장치'는 장기간 사용 및 배기가스 노출에 의해 촉매 활성능이 저감되어 재생 및 재제조가 필요한 차량용 촉매장치를 의미한다.The term 'regeneration target device' used in the present invention refers to a vehicle catalyst device that requires regeneration and remanufacturing due to reduced catalytic activity due to long-term use and exposure to exhaust gas.
도 1은 본 발명에 따른 차량용 촉매장치의 재생 방법의 순서도를 보여주는 일실시예이다.Figure 1 is an embodiment showing a flow chart of a method for regenerating a catalytic device for a vehicle according to the present invention.
본 발명에 따른 차량용 촉매장치의 재생 방법은 재생대상장치에 고온의 압축 수증기를 분사하는 1차 세정단계(S100)와 1차 세정된 재생대상장치를 초음파 세정하는 2차 세정단계(S200)와 2차 세정된 재생대상장치를 촉매활성성분으로 활성화시키는 활성화단계(S300)를 포함한다.The method for regenerating a catalytic device for a vehicle according to the present invention includes a first cleaning step (S100) of spraying high-temperature compressed water vapor on the device to be regenerated, and a second cleaning step (S200) of ultrasonic cleaning the first cleaned device to be regenerated. It includes an activation step (S300) of activating the first cleaned regeneration target device with a catalytically active component.
재생대상장치의 표면에는 탄소 찌꺼기, 분진 등의 불순물 및 오염물이 축적되어 있으며, 상기 불순물 및 오염물은 차량용 촉매장치의 촉매활성을 저하시키는 원인이 되고, 후공정인 활성화단계에서 촉매활성성분의 함침 효율을 저하시키기 때문에 제거가 요구된다.Impurities and contaminants such as carbon residue and dust are accumulated on the surface of the device to be regenerated, and these impurities and contaminants cause a decrease in the catalytic activity of the vehicle catalyst device and reduce the impregnation efficiency of the catalytic active ingredient in the activation step, which is a post-process. Because it degrades, its removal is required.
1차 세정단계(S100)에서는 재생대상장치에 고온의 압축 수증기를 분사하여 재생대상장치 표면의 불순물 및 오염물을 제거한다. In the first cleaning step (S100), high-temperature compressed water vapor is sprayed on the device to be regenerated to remove impurities and contaminants on the surface of the device.
상기 1차 세정단계에서는 350 내지 500℃에서 5 내지 10 bar의 압축 수증기를 1 내지 3시간 분사한다. In the first cleaning step, compressed water vapor of 5 to 10 bar is sprayed at 350 to 500 ° C. for 1 to 3 hours.
이때 압축 수증기는 압축공기와 수증기를 혼합한 것으로, 압축공기와 수증기의 부피비는 1: 1 내지 2로 형성될 수 있다. At this time, compressed water vapor is a mixture of compressed air and water vapor, and the volume ratio of compressed air and water vapor may be 1:1 to 2.
바람직하게는, 상기 1차 세정단계에서는 450℃에서 5 내지 10 bar의 압축 수증기를 2시간 분사하며, 압축수증기는 압축공기와 수증기의 부피비는 1: 1로 형성한 것을 사용할 수 있다. Preferably, in the first cleaning step, compressed water vapor of 5 to 10 bar is sprayed at 450° C. for 2 hours, and the compressed water vapor may be used in a volume ratio of compressed air and water vapor of 1:1.
또한, 압축수증기를 분사할 때 분사방향을 재생대상장치의 입구에서 출구 쪽 방향과 출구에서 입구 쪽 방향으로 즉, 지그재그로 번갈아 가면서 세정하는 것이 바람직하다.In addition, when spraying compressed water vapor, it is preferable to alternately clean the spray direction from the inlet to the outlet of the regeneration target device and from the outlet to the inlet, that is, in a zigzag direction.
2차 세정단계(S200)에서는 1차 세정된 재생대상장치를 초음파 세정하여 1차 세정시 제거되지 못한 불순물 및 오염물을 2차로 제거한다.In the second cleaning step (S200), the first cleaned regeneration target device is ultrasonic cleaned to secondarily remove impurities and contaminants that were not removed during the first cleaning.
초음파 처리시 용액은 산성 또는 염기성 용액을 사용할 수 있으며, 산성 용액과 염기성 용액을 순차적으로 사용하는 것도 가능하다. 구체적으로는, 1차로 산성용액을 사용하고, 2차로 염기성 용액을 사용할 수 있다. 또는, 1차로 염기성 용액을 사용하고, 2차로 산성용액을 사용할 수 있다.During ultrasonic treatment, an acidic or basic solution can be used, and it is also possible to use an acidic solution and a basic solution sequentially. Specifically, an acidic solution can be used first and a basic solution can be used secondarily. Alternatively, a basic solution can be used first and an acidic solution can be used secondarily.
산성용액은 황산 용액, 질산 용액 및 염산 용액 중 어느 하나를 사용할 수 있으며, 상기 산성용액의 pH는 2 내지 5로 조정될 수 있다.The acidic solution may be any one of a sulfuric acid solution, a nitric acid solution, and a hydrochloric acid solution, and the pH of the acidic solution may be adjusted to 2 to 5.
염기성용액은 수산화나트륨 용액, 수산화칼륨 용액 및 수산화리튬 용액 중 어느 하나를 사용할 수 있으며, 상기 염기성용액의 pH는 9 내지 11로 조정될 수 있다. The basic solution can be any one of sodium hydroxide solution, potassium hydroxide solution, and lithium hydroxide solution, and the pH of the basic solution can be adjusted to 9 to 11.
상기 2차 세정단계(S200)에서는 1차 세정된 시료를 20 내지 50 kHz의 초음파에서 1 내지 3시간 초음파 처리한 후, 120 내지 180℃ 에서 3 내지 6시간 건조한다. In the second cleaning step (S200), the first cleaned sample is sonicated at 20 to 50 kHz for 1 to 3 hours and then dried at 120 to 180°C for 3 to 6 hours.
바람직하게는, 상기 2차 세정단계(S200)에서는 1차 세정된 시료를 25 내지 30 kHz의 초음파에서 1 내지 2시간 초음파 처리한 후, 145 내지 160℃ 에서 4 내지 5시간 건조한다. Preferably, in the second cleaning step (S200), the first cleaned sample is sonicated at 25 to 30 kHz for 1 to 2 hours and then dried at 145 to 160°C for 4 to 5 hours.
활성화단계(S300)에서는 2차 세정된 재생대상장치를 촉매활성성분으로 활성화시킨다.In the activation step (S300), the secondary cleaned regeneration target device is activated with a catalytic active ingredient.
재생대상장치의 촉매활성성분의 손실을 복원하고 촉매활성능을 증가시키기 위하여 촉매활성성분이 포함된 함침액에 함침처리한 후 건조 및 배소한다. In order to restore the loss of catalytic active ingredients of the device to be regenerated and increase the catalytic activity, it is impregnated with an impregnation solution containing catalytic active ingredients, then dried and roasted.
촉매활성성분은 백금(Pt), 로듐(Rh) 및 팔라듐(Pd) 중 적어도 어느 하나를 포함할 수 있으며, 상기 촉매활성성분과 증류수 및 유기용매 중 적어도 어느 하나의 용매를 혼합하여 함침용액을 제조하여 사용한다.The catalytically active ingredient may include at least one of platinum (Pt), rhodium (Rh), and palladium (Pd), and an impregnation solution is prepared by mixing the catalytically active ingredient with at least one of distilled water and an organic solvent. and use it.
상기 촉매활성성분은 세제곱피트(ft3) 부피의 용매 중 1 내지 10 g , 바람직하게는, 1 내지 5 g, 더욱 바람직하게는, 1 내지 2g 첨가될 수 있다.The catalytically active ingredient may be added in an amount of 1 to 10 g, preferably, 1 to 5 g, and more preferably, 1 to 2 g per cubic foot (ft 3 ) of solvent.
바람직하게는, 상기 촉매활성성분은 백금(Pt)을 사용하며, 세제곱피트(ft3) 부피의 용매 중 1 내지 2 g 포함되도록 첨가될 수 있다.Preferably, the catalytically active ingredient uses platinum (Pt), and may be added in an amount of 1 to 2 g per cubic foot (ft 3 ) of solvent.
상기 활성화단계(S300)에서는 함침처리된 시료를 100 내지 150 ℃에서 8 내지 12시간 건조한 후, 450 내지 600℃에서 2 내지 4시간 배소한다. In the activation step (S300), the impregnated sample is dried at 100 to 150°C for 8 to 12 hours and then roasted at 450 to 600°C for 2 to 4 hours.
바람직하게는, 함침처리된 시료를 110 내지 130 ℃에서 9 내지 11시간 건조한 후, 500 내지 550℃에서 3 내지 4시간 배소하며, 더욱 바람직하게는, 함침처리된 시료를 120 ℃에서 10시간 건조한 후, 550℃에서 3시간 배소처리할 수 있다.Preferably, the impregnated sample is dried at 110 to 130°C for 9 to 11 hours, then roasted at 500 to 550°C for 3 to 4 hours, and more preferably, the impregnated sample is dried at 120°C for 10 hours. , can be roasted at 550℃ for 3 hours.
상기 활성화 공정을 통해 촉매 활성 수준을 새로운 차량용 촉매장치 대비 90% 이상, 바람직하게는 95% 이상의 수준으로 향상시킬 수 있게 된다. Through the activation process, the catalyst activity level can be improved to more than 90%, preferably more than 95%, compared to a new vehicle catalyst device.
본 발명에 따른 차량용 촉매장치의 재생 방법은 재생된 차량용 촉매장치를 평가하는 평가단계를 더 포함하며, 상기 평가단계에서는 재생된 차량용 촉매장치가 자동차 배출가스 후처리 장치로서 사용 가능한 것인지 확인 및 평가하게 된다. The method for regenerating a vehicle catalyst device according to the present invention further includes an evaluation step of evaluating the regenerated vehicle catalyst device, and in the evaluation step, it is confirmed and evaluated whether the regenerated vehicle catalyst device can be used as an automobile exhaust gas after-treatment device. do.
도 2는 본 발명에 따른 차량용 촉매장치의 재생 방법의 순서도를 보여주는 다른 실시예이다.Figure 2 is another embodiment showing a flowchart of a method for regenerating a catalytic device for a vehicle according to the present invention.
상기 평가단계에서는 차량용 촉매장치의 반응활성을 측정할 수 있는 촉매장치 반응활성 측정장치를 활성화처리된/재생처리된 차량용 촉매장치와 연결하여 배출되는 배출가스를 촉매장치에 통과시킴으로써 촉매장치의 반응활성을 측정하거나 활성화처리된/재생처리된 차량용 촉매장치를 실제 자동차와 연결하여 자동차가 운행되는 조건하에서 반응활성을 측정할 수 있다. In the above evaluation step, a catalyst device reaction activity measuring device capable of measuring the reaction activity of a vehicle catalyst device is connected to an activated/regenerated vehicle catalyst device, and the exhaust gas discharged from the vehicle is passed through the catalyst device to determine the reaction activity of the catalyst device. The reaction activity can be measured under the conditions in which the car is driven by measuring or connecting the activated/regenerated automotive catalyst device to an actual car.
이때, 상기 평가단계를 통하여 원하는 성능을 발휘하는 차량용 촉매장치를 가스 분석기, 바람직하게는 오염물질을 측정하기 위하여 당업계에서 통상적으로 사용되는 가스 분석기로 자동차 촉매 장치 후단에서 배출가스를 분석하였을 때, 신촉매장치가 갖는 대기 오염물질을 저감성능의 90% 이상의 활성을 발휘하는 촉매장치를 선별하여 최종적인 재제조된 자동차 촉매장치로 사용할 수 있다.At this time, the above When the automotive catalyst device that demonstrates the desired performance through the evaluation stage is analyzed with a gas analyzer, preferably a gas analyzer commonly used in the industry to measure pollutants, at the rear of the automobile catalyst device, the new catalyst device A catalytic device that exhibits an activity of more than 90% of the air pollutant reduction performance can be selected and used as the final remanufactured automobile catalytic device.
이상과 같이 본 발명은 첨부된 도면을 참조하여 바람직한 실시예를 중심으로 설명하였지만 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 본 발명의 특허청구범위에 기재된 기술적 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 또는 변형하여 실시할 수 있다. 따라서 본 발명의 범주는 이러한 많은 변형의 예들을 포함하도록 기술된 청구범위에 의해서 해석되어야 한다.As described above, the present invention has been described with a focus on preferred embodiments with reference to the attached drawings, but within the scope of the technical spirit and scope described in the claims of the present invention by those skilled in the art to which the present invention pertains. The present invention can be implemented with various modifications or modifications. Accordingly, the scope of the present invention should be construed by the appended claims to include examples of many such modifications.
Claims (5)
1차 세정된 재생대상장치를 초음파 세정하는 2차 세정단계(S200)와
2차 세정된 재생대상장치를 촉매활성성분으로 활성화시키는 활성화단계(S300)를 포함하는 것을 특징으로 하는
차량용 촉매장치의 재생 방법.
A first cleaning step (S100) in which high-temperature compressed water vapor is sprayed onto the regeneration target device.
A second cleaning step (S200) of ultrasonic cleaning the first cleaned playback target device,
Characterized by comprising an activation step (S300) of activating the secondary cleaned regeneration target device with a catalytically active component.
Method for regenerating a vehicle catalytic converter.
상기 1차 세정단계에서는
350 내지 500℃에서 5 내지 10 bar의 압축 수증기를 1 내지 3시간 분사하는 것을 특징으로 하는
차량용 촉매장치의 재생 방법.
According to clause 1,
In the first cleaning step,
Characterized by spraying compressed water vapor at 5 to 10 bar at 350 to 500 ° C for 1 to 3 hours.
Method for regenerating a vehicle catalytic converter.
상기 2차 세정단계(S200)에서는
1차 세정된 재생대상장치를 20 내지 50 kHz의 초음파에서 1 내지 3시간 초음파 처리한 후, 120 내지 180℃ 에서 3 내지 6시간 건조하는 것을 특징으로 하는
차량용 촉매장치의 재생 방법.
According to clause 1,
In the second cleaning step (S200),
Characterized in that the first cleaned playback device is sonicated at 20 to 50 kHz for 1 to 3 hours and then dried at 120 to 180°C for 3 to 6 hours.
Method for regenerating a vehicle catalytic converter.
상기 활성화단계(S300)에서는
백금(Pt), 로듐(Rh) 및 팔라듐(Pd) 중 적어도 어느 하나를 포함하는 촉매활성성분이 포함된 함침액에 함침한 후 함침처리된 재생대상장치를 건조 및 배소하는 것을 특징으로 하는
차량용 촉매장치의 재생 방법.
According to clause 1,
In the activation step (S300),
Characterized in that the impregnated regeneration target device is dried and roasted after impregnating it with an impregnation liquid containing a catalytically active ingredient containing at least one of platinum (Pt), rhodium (Rh), and palladium (Pd).
Method for regenerating a vehicle catalytic converter.
상기 활성화단계(S300)에서는
함침처리된 재생대상장치를 100 내지 150 ℃에서 8 내지 12시간 건조한 후, 450 내지 600℃에서 2 내지 4시간 배소하는 것을 특징으로 하는
차량용 촉매장치의 재생 방법.
According to clause 4,
In the activation step (S300),
Characterized in that the impregnated regeneration target device is dried at 100 to 150 ℃ for 8 to 12 hours and then roasted at 450 to 600 ℃ for 2 to 4 hours.
Method for regenerating a vehicle catalytic converter.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100501675B1 (en) | 2002-06-12 | 2005-07-18 | 한국기계연구원 | Electrically heated catalyst system by using brake regenerative energy and ultra-capacitor for the sub-regeneration of Diesel Particulate Filter-trap |
| KR102111955B1 (en) | 2019-12-13 | 2020-05-18 | 화이버텍(주) | Dpf regeneration system and dpf regeneration method |
| KR102273889B1 (en) | 2019-09-30 | 2021-07-06 | 대경에이티 주식회사 | Dpf regeneration system |
-
2022
- 2022-11-09 KR KR1020220148778A patent/KR20240067585A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100501675B1 (en) | 2002-06-12 | 2005-07-18 | 한국기계연구원 | Electrically heated catalyst system by using brake regenerative energy and ultra-capacitor for the sub-regeneration of Diesel Particulate Filter-trap |
| KR102273889B1 (en) | 2019-09-30 | 2021-07-06 | 대경에이티 주식회사 | Dpf regeneration system |
| KR102111955B1 (en) | 2019-12-13 | 2020-05-18 | 화이버텍(주) | Dpf regeneration system and dpf regeneration method |
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