CN112145262A - Three-effect automobile exhaust purifier - Google Patents
Three-effect automobile exhaust purifier Download PDFInfo
- Publication number
- CN112145262A CN112145262A CN202010885285.7A CN202010885285A CN112145262A CN 112145262 A CN112145262 A CN 112145262A CN 202010885285 A CN202010885285 A CN 202010885285A CN 112145262 A CN112145262 A CN 112145262A
- Authority
- CN
- China
- Prior art keywords
- gas
- premixer
- automobile
- engine
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
-
- 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
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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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
- F01N3/24—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
- F01N3/30—Arrangements for supply of additional air
- F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
-
- 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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/02—Catalytic activity of catalytic converters
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a three-effect automobile exhaust purifier, which is characterized in that an exhaust pipe of an automobile engine is directly connected with an automobile exhaust purifier combining a premixer and a three-effect precious metal catalyst, the premixer adopts a jet flow mixer, the jet power gas of the premixer is the automobile engine exhaust, the introduced gas of the premixer is the outlet gas of the automobile exhaust purifier, when the temperature of the engine reaches 590-1100 ℃, the introduced gas starts to be input, the input flow is 5% -30% of the jet power gas, therefore, the reaction temperature entering a catalyst bed layer is reduced, the reaction temperature of the catalyst bed layer is kept at 560-760 ℃, the hydrothermal growth of precious metal crystal grains is reduced, and the use of the precious metal catalyst is greatly prolonged.
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, 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 maximum conversion of harmful gases is possible.
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
A combined three-effect tail gas purifier for car is installed near the exhaust outlet of engine to maximum extent, so that the exhaust temp of engine can be maximally kept at higher value in the low-speed or starting stage of engine, promoting the activation of catalyst and reducing the discharge of pollutant. The exhaust pipe of the automobile engine is directly connected with the automobile exhaust purifier combined with the premixer and the three-way noble metal catalyst. The premixer has the function of mixing the hot gas of the engine with the final exhaust gas. The premixer adopts a jet flow gas mixer, the jet power gas of the premixer is the tail gas of an automobile engine, and the introduced gas of the premixer is the outlet gas of an automobile tail gas purifier. When the temperature of the smoke of the engine is low, the premixer does not work and is only used as a channel. When the exhaust temperature of the engine reaches 590-1100 ℃, introduced gas is input, the backflow gas amount is adjusted by designing a multi-channel pipeline and a temperature detection shut-off valve, the input flow is 5% -30% of the jet power gas, so that the reaction temperature entering a catalyst bed is reduced, the reaction temperature of the catalyst bed is kept at 560-760 ℃, the hydrothermal growth of noble metal crystal grains is reduced, and the use of the noble metal catalyst is greatly prolonged.
Detailed Description
Example 1: an automobile three-effect tail gas purifier with the discharge capacity of 1.0 is characterized in that an exhaust pipe of an automobile engine is directly connected with an automobile tail gas purifier combining a premixer and a three-effect precious metal catalyst, the premixer adopts a jet flow mixer, the jet power gas of the premixer is the automobile engine tail gas, the introduced gas of the premixer is the outlet gas of the automobile tail gas purifier, when the temperature of the exhaust gas of the engine is lower than 590 ℃, the introduced gas pipeline of the mixture is closed, when the temperature of the exhaust gas of the engine reaches 590 ℃, the introduced gas starts to be input, the input flow rate is 5 percent of the injection dynamic gas, thereby reducing the reaction temperature entering the catalyst bed layer, keeping the reaction temperature of the catalyst bed layer at 560 ℃, continuously increasing the engine, the introduced gas flow rate is increased and when the engine exhaust temperature reaches 1100 c, the input flow rate is 30% of the injected kinetic gas, so that the reaction temperature of the catalyst bed is maintained at 760 c. Thereby reducing the hydrothermal growth of noble metal crystal grains and greatly prolonging the use of noble metal catalysts.
Example 2: an automobile three-effect tail gas purifier with 1.6 discharge capacity, an automobile engine exhaust pipe is directly connected with an automobile tail gas purifier combining a premixer and a three-effect precious metal catalyst, the premixer adopts a jet flow mixer, the jet power gas of the premixer is the automobile engine tail gas, the introduced gas of the premixer is the outlet gas of the automobile tail gas purifier, when the temperature of the exhaust gas of the engine is lower than 590 ℃, the introduced gas pipeline of the mixture is closed, when the temperature of the exhaust gas of the engine reaches 590 ℃, the introduced gas starts to be input, the input flow rate is 5 percent of the injection dynamic gas, thereby reducing the reaction temperature entering the catalyst bed layer, keeping the reaction temperature of the catalyst bed layer at 560 ℃, continuously increasing the engine, the introduced gas flow rate is increased and when the engine exhaust temperature reaches 1100 c, the input flow rate is 30% of the injected kinetic gas, so that the reaction temperature of the catalyst bed is maintained at 760 c. Thereby reducing the hydrothermal growth of noble metal crystal grains and greatly prolonging the use of noble metal catalysts.
Example 3: an automobile three-effect tail gas purifier with 2.5 discharge capacity, an automobile engine exhaust pipe is directly connected with an automobile tail gas purifier combining a premixer and a three-effect precious metal catalyst, the premixer adopts a jet flow mixer, the jet power gas of the premixer is the automobile engine tail gas, the introduced gas of the premixer is the outlet gas of the automobile tail gas purifier, when the temperature of the exhaust gas of the engine is lower than 590 ℃, the introduced gas pipeline of the mixture is closed, when the temperature of the exhaust gas of the engine reaches 590 ℃, the introduced gas starts to be input, the input flow rate is 5 percent of the injection dynamic gas, thereby reducing the reaction temperature entering the catalyst bed layer, keeping the reaction temperature of the catalyst bed layer at 560 ℃, continuously increasing the engine, the introduced gas flow rate is increased and when the engine exhaust temperature reaches 1100 c, the input flow rate is 30% of the injected kinetic gas, so that the reaction temperature of the catalyst bed is maintained at 760 c. Thereby reducing the hydrothermal growth of noble metal crystal grains and greatly prolonging the use of noble metal catalysts.
Compared with the tail gas purifier with the same service life, the invention greatly reduces the use amount of the noble metal catalyst without the premixer.
Claims (1)
1. The utility model provides a three-effect automobile exhaust purifier which characterized in that: the exhaust pipe of the automobile engine is directly connected with an automobile exhaust purifier combining a premixer and a three-way precious metal catalyst, the premixer adopts a jet flow mixer, the jet power gas of the premixer is the automobile engine exhaust, the introduced gas of the premixer is the outlet gas of the automobile exhaust purifier, when the temperature of the engine reaches 590-1100 ℃, the introduced gas is input, the input flow is 5% -30% of the jet power gas, therefore, the reaction temperature entering a catalyst bed is reduced, the reaction temperature of the catalyst bed is kept at 560-760 ℃, the hydrothermal growth of precious metal crystal grains is reduced, and the use of the precious metal catalyst is greatly prolonged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885285.7A CN112145262A (en) | 2020-08-28 | 2020-08-28 | Three-effect automobile exhaust purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885285.7A CN112145262A (en) | 2020-08-28 | 2020-08-28 | Three-effect automobile exhaust purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145262A true CN112145262A (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885285.7A Pending CN112145262A (en) | 2020-08-28 | 2020-08-28 | Three-effect automobile exhaust purifier |
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| Country | Link |
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| CN (1) | CN112145262A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090120066A1 (en) * | 2007-11-14 | 2009-05-14 | Paccar Inc. | Cooling device for high temperature exhaust |
| CN102322323A (en) * | 2011-08-19 | 2012-01-18 | 浙江吉利汽车研究院有限公司 | Three-way catalytic reactor protecting system for automobile |
| CN105888804A (en) * | 2014-12-16 | 2016-08-24 | 杨洋 | Auto exhaust pipe with function of internal cooling based on airflow effect |
| CN109209576A (en) * | 2018-10-30 | 2019-01-15 | 天津中恒动力研究院有限公司 | A kind of pipe structure that can reduce motor exhaust temperature and engine pack |
| CN110486123A (en) * | 2018-05-14 | 2019-11-22 | 南京林业大学 | A kind of high-temperature tail gas cooling device of circumferentially distributed formula |
| CN110748400A (en) * | 2019-09-25 | 2020-02-04 | 杨皓 | Improvement method of automobile exhaust purifier with temperature control system |
-
2020
- 2020-08-28 CN CN202010885285.7A patent/CN112145262A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090120066A1 (en) * | 2007-11-14 | 2009-05-14 | Paccar Inc. | Cooling device for high temperature exhaust |
| CN102322323A (en) * | 2011-08-19 | 2012-01-18 | 浙江吉利汽车研究院有限公司 | Three-way catalytic reactor protecting system for automobile |
| CN105888804A (en) * | 2014-12-16 | 2016-08-24 | 杨洋 | Auto exhaust pipe with function of internal cooling based on airflow effect |
| CN110486123A (en) * | 2018-05-14 | 2019-11-22 | 南京林业大学 | A kind of high-temperature tail gas cooling device of circumferentially distributed formula |
| CN109209576A (en) * | 2018-10-30 | 2019-01-15 | 天津中恒动力研究院有限公司 | A kind of pipe structure that can reduce motor exhaust temperature and engine pack |
| CN110748400A (en) * | 2019-09-25 | 2020-02-04 | 杨皓 | Improvement method of automobile exhaust purifier with temperature control system |
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