CN110748400B - Improvement method of automobile exhaust purifier with temperature control system - Google Patents
Improvement method of automobile exhaust purifier with temperature control system Download PDFInfo
- Publication number
- CN110748400B CN110748400B CN201910912375.8A CN201910912375A CN110748400B CN 110748400 B CN110748400 B CN 110748400B CN 201910912375 A CN201910912375 A CN 201910912375A CN 110748400 B CN110748400 B CN 110748400B
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- precious metal
- metal catalyst
- temperature
- way
- heat dissipation
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000006872 improvement Effects 0.000 title claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 61
- 239000010970 precious metal Substances 0.000 claims abstract description 53
- 230000017525 heat dissipation Effects 0.000 claims abstract description 31
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000003197 catalytic effect Effects 0.000 claims abstract description 6
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 238000011084 recovery Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002779 inactivation Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2046—Periodically cooling catalytic reactors
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an improvement method of an automobile exhaust purifier with a temperature control system, which is characterized in that a fin heat exchange assembly with a telescopic sleeve is designed between an exhaust pipe of an automobile engine and a three-way precious metal catalyst, the maximum heat dissipation area of the heat exchange assembly is 4-40 times that of an original heat exchange sleeve (the sleeve is fully opened), and the minimum heat dissipation area is 0.1 time that of the original heat exchange sleeve (the sleeve is fully closed); when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened to reduce the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; when the temperature of the three-way precious metal catalyst is higher than 500 ℃, the telescopic sleeve shortens and increases the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat dissipation assembly adopts air to flow air-cooled smoke in the process of automobile movement, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-500 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and catalyst failure caused by grain growth due to overhigh reaction temperature is avoided.
Description
Technical Field
The invention relates to the fields of metallurgy, energy conservation and environmental protection, and discloses a method for effectively reducing the emission of gas wastes and reducing resource consumption.
Background
The CN106494187A of Zhongguang Ming institute of industry and technology, discloses an automobile engine coolant and exhaust smoke total heat recovery in-car heating system, which realizes the total heat recovery of a power system and the zero-energy-consumption high-efficiency heating in the car. The system comprises a power engine cooling liquid and exhaust smoke composite heat recovery heat supply subsystem, a composite heat recovery heat supply control and regulation subsystem and a connecting pipeline; the exhaust smoke composite heat recovery and heat supply subsystem comprises an automobile engine, a thermostat, a heat storage water tank, an automobile internal heat recovery and heating heat exchanger, an auxiliary heat exchanger outside an automobile, a power engine fuel gas exhaust smoke heat recovery type heat exchanger, a first circulating water pump, a second circulating water pump and a connecting pipeline; the composite heat recovery heat supply control and regulation subsystem comprises a thermostat, an electric control valve, a fan rotating speed controller of the heat exchanger inside and outside the vehicle and a connecting pipeline. The invention supplies heat to the interior of the vehicle by using the cooling liquid and the waste heat of the smoke exhaust system as heat sources, solves the heat supply problem in transition seasons and winter, reduces energy waste, and realizes energy conservation, emission reduction and sustainable development.
Sun Liang CN104514597A discloses a cooling, condensing and purifying system using automobile exhaust emission, which comprises two parts of (1) a refrigeration compressor unit and (2) an automobile exhaust cooling, condensing and purifying device. The method is characterized in that: (1) a refrigeration compressor set: replacing an automobile air conditioner compression pump with a refrigeration pump, connecting an exhaust pipe and a return pipe of the compressor to an automobile exhaust cooling and condensing purifier at the tail end of an automobile exhaust pipe, and starting refrigeration; (2) automobile exhaust cooling, condensation clarifier: this clarifier shell adopts stainless steel sheet metal punching press system type, inside law installation gas refluence baffle, there is the refrigeration pipeline in the side of admitting air of baffle, treat automobile exhaust when this clarifier, cool off it rapidly, arrange the comdenstion water to the filter-tank in after the cooling, there is the filter pulp in the filter-tank, refrigerating system's blast pipe has been installed under the bottom baffle of filter-tank, heat the filter pulp with the high temperature of blast pipe, make the comdenstion water evaporate immediately, break away from the cooling, the condensation clarifier, purifying process is accomplished.
A Caihao Heping CN105649739A of lamp factory in Haofeng city, Changzhou announces a tail gas treatment technical field, concretely relates to a tail gas exhaust pipe, which comprises an exhaust pipe body, and is characterized in that the exhaust pipe body comprises a smoke inlet pipe, a cooling pipe, a filter pipe, a purifying pipe and a smoke eliminating pipe, wherein the smoke inlet pipe is connected with the front of the cooling pipe, the back of the cooling pipe is connected with the front of the filter pipe, the back of the filter pipe is connected with the front of the purifying pipe, the back of the purifying pipe is connected with the smoke eliminating pipe, a small cylinder is sleeved in the cooling pipe, the small cylinder is communicated with the smoke inlet pipe and the filter pipe, a sealed cavity is formed between the small cylinder and the inner wall of the cooling pipe, cooling water is injected into the cavity, two staggered filter plates are arranged in the filter pipe, a filter is arranged in the filter plates, reduced honeycomb ceramics and oxidized honeycomb ceramics are arranged in the filter pipe, and a sprayer is arranged on the smoke eliminating pipe, the invention provides a device which can treat automobile tail gas as completely as possible, and the tail gas exhaust pipe reduces tail gas emission and environmental pollution. .
According to the invention patent, the working temperature of the three-way precious metal catalyst is controlled consciously without paying attention to the invention patent, the method for avoiding the hydrothermal deactivation of the three-way precious metal catalyst is to control the working temperature of the three-way precious metal catalyst, and the important detection point is the temperature before the catalyst reactor.
The low working temperature of the three-way catalyst can cause the low activity of the catalyst and the incomplete conversion of harmful gases, and the lowest suitable temperature is 350 ℃.
The three-way catalyst working temperature is too high to lead to the permanent inactivation of the catalyst activity, and the highest suitable temperature is 600 ℃.
In fact, the active inactivation of the noble metal can be effectively weakened by controlling the working temperature to be 350-600 ℃, and the experiment proves that the noble metal can be effectively deactivated.
The characteristic of tail gas in the starting and stopping process of an engine is utilized to weaken the activity inactivation of the noble metal catalyst, and the service life of the three-way catalyst is prolonged, so that the method is an effective method.
Disclosure of Invention
An improvement method of an automobile exhaust purifier with a temperature control system is characterized in that: designing a fin radiating assembly with a telescopic sleeve in the middle of connecting an exhaust pipe of an automobile engine with a three-way precious metal catalyst; the maximum heat dissipation area of the heat dissipation assembly is 4-40 times of that of the original heat dissipation sleeve, and the minimum heat dissipation area of the heat dissipation assembly is 0.1 time of that of the original design; when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened, the heat dissipation area is reduced to 0.1 time of the original design at most, and therefore the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; when the temperature of the three-effect precious metal catalyst is higher than 500 ℃, the telescopic sleeve shortens and increases the heat exchange area, and the maximum heat exchange area is 4-40 times of that of the originally designed heat exchange sleeve, so that the inlet temperature of the three-effect precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat exchange component adopts air flow air-cooled smoke in the moving process of an automobile, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-600 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and the catalyst failure caused by grain growth due to overhigh reaction temperature can be avoided.
Detailed Description
Example 1: a1.0 displacement takes the improved method of the car exhaust gas cleaner of the temperature control system, in the middle of the exhaust pipe of the car engine connects the three-way precious metal catalyst, design the finned heat-dissipating module with telescopic pipe, the largest heat-dissipating area of the heat-dissipating module is 4 times of the heat-dissipating double-pipe of the original design, the smallest heat-dissipating area is 0.1 times of the original design; when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened to reduce the heat dissipation area to 0.1 time of the original heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; the inlet temperature of the three-way precious metal catalyst is gradually increased to be higher than 500 ℃, the heat dissipation area is gradually increased, and when the temperature of the three-way precious metal catalyst is higher than 500 ℃, the telescopic sleeve is shortened to increase the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat dissipation assembly adopts air movement air cooling smoke in the automobile movement process, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-600 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and the catalyst failure caused by grain growth due to overhigh reaction temperature can be avoided.
Example 2: a2.0 displacement takes the improved method of the car exhaust gas cleaner of the temperature control system, in the middle of the exhaust pipe of the car engine connects the three-way precious metal catalyst, design the finned heat-dissipating module with telescopic pipe, the largest heat-dissipating area of the heat-dissipating module is 14 times of the heat-dissipating double-pipe of the original design, the smallest heat-dissipating area is 0.1 times of the original design; when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened to reduce the heat dissipation area to 0.1 time of the original heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; the inlet temperature of the three-way precious metal catalyst is gradually increased to be higher than 500 ℃, the heat dissipation area is gradually increased, and when the temperature of the three-way precious metal catalyst is higher than 500 ℃, the telescopic sleeve is shortened to increase the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat dissipation assembly adopts air movement air cooling smoke in the automobile movement process, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-600 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and the catalyst failure caused by grain growth due to overhigh reaction temperature can be avoided.
Example 3: an improvement method of a 3.0-displacement gasoline automobile exhaust purifier with a temperature control system comprises the steps of designing a fin radiating assembly with a telescopic sleeve between an automobile engine exhaust pipe and a three-way precious metal catalyst, wherein the maximum radiating area of the radiating assembly is 24 times that of an original radiating sleeve, and the minimum radiating area is 0.1 time that of the original design; when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened to reduce the heat dissipation area to 0.1 time of the original heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; the inlet temperature of the three-way precious metal catalyst is gradually increased to be higher than 500 ℃, the heat dissipation area is gradually increased, and when the temperature of the three-way precious metal catalyst is higher than 500 ℃, the telescopic sleeve is shortened to increase the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat dissipation assembly adopts air movement air cooling smoke in the automobile movement process, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-600 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and the catalyst failure caused by grain growth due to overhigh reaction temperature can be avoided.
Claims (1)
1. An improvement method of an automobile exhaust purifier with a temperature control system is characterized in that: designing a fin heat exchange assembly with a telescopic sleeve between the exhaust pipe of the automobile engine and a three-way noble metal catalyst, wherein the maximum heat dissipation area of the heat exchange assembly is 4-40 times that of the heat exchange sleeve in the original design, and the minimum heat dissipation area is 0.1 time that of the original design; when the temperature of the three-way precious metal catalyst is lower than 350 ℃, the telescopic sleeve is lengthened to reduce the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is increased to be as close to 350 ℃ as possible; when the temperature of the three-way precious metal catalyst is higher than 500 ℃, the telescopic sleeve shortens and increases the heat dissipation area, so that the inlet temperature of the three-way precious metal catalyst is reduced to be as close to 500 ℃ as possible; the heat dissipation assembly adopts air to flow air-cooled smoke in the process of automobile movement, so that the working temperature of the three-way precious metal catalyst is controlled to be 350-500 ℃ throughout the year without long-time overtemperature, the precious metal catalytic activity in the three-way precious metal catalyst is protected, and the catalyst failure caused by grain growth due to overhigh reaction temperature can be avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912375.8A CN110748400B (en) | 2019-09-25 | 2019-09-25 | Improvement method of automobile exhaust purifier with temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912375.8A CN110748400B (en) | 2019-09-25 | 2019-09-25 | Improvement method of automobile exhaust purifier with temperature control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748400A CN110748400A (en) | 2020-02-04 |
| CN110748400B true CN110748400B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910912375.8A Expired - Fee Related CN110748400B (en) | 2019-09-25 | 2019-09-25 | Improvement method of automobile exhaust purifier with temperature control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145262A (en) * | 2020-08-28 | 2020-12-29 | 杨皓 | Three-effect automobile exhaust purifier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0928885A2 (en) * | 1998-01-07 | 1999-07-14 | Scambia Industrial Developments Aktiengesellschaft | Exhaust gas device for an internal combustion engine and process for making such a device |
| US9399927B2 (en) * | 2014-01-17 | 2016-07-26 | Mitsubishi Hitachi Power Systems Americas, Inc. | Method and apparatus for operating a gas turbine power plant at low load conditions with stack compliant emissions levels |
| CN106704046A (en) * | 2017-03-17 | 2017-05-24 | 北京美联桥科技发展有限公司 | Heat exchange unit with retractable sections and waste gas recirculation cooler |
| CN108167857A (en) * | 2017-12-22 | 2018-06-15 | 东南大学 | A kind of high efficiency sleeve type steam air heater device |
-
2019
- 2019-09-25 CN CN201910912375.8A patent/CN110748400B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0928885A2 (en) * | 1998-01-07 | 1999-07-14 | Scambia Industrial Developments Aktiengesellschaft | Exhaust gas device for an internal combustion engine and process for making such a device |
| US9399927B2 (en) * | 2014-01-17 | 2016-07-26 | Mitsubishi Hitachi Power Systems Americas, Inc. | Method and apparatus for operating a gas turbine power plant at low load conditions with stack compliant emissions levels |
| CN106704046A (en) * | 2017-03-17 | 2017-05-24 | 北京美联桥科技发展有限公司 | Heat exchange unit with retractable sections and waste gas recirculation cooler |
| CN108167857A (en) * | 2017-12-22 | 2018-06-15 | 东南大学 | A kind of high efficiency sleeve type steam air heater device |
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| CN110748400A (en) | 2020-02-04 |
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Effective date of registration: 20211129 Address after: No. 24, Section 1, Xuefu Road, Southwest Airport Economic Development Zone, Chengdu, Sichuan 610200 Patentee after: CHENGDU University OF INFORMATION TECHNOLOGY Address before: 610072 No. 301, Unit 4, Building 13, No. 118, Jinze Road, Qingyang District, Chengdu City, Sichuan Province Patentee before: Yang Hao |
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