CN117345380A - Tail gas processor, tail gas processing method, exhaust system and vehicle - Google Patents
Tail gas processor, tail gas processing method, exhaust system and vehicle Download PDFInfo
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- CN117345380A CN117345380A CN202311388297.9A CN202311388297A CN117345380A CN 117345380 A CN117345380 A CN 117345380A CN 202311388297 A CN202311388297 A CN 202311388297A CN 117345380 A CN117345380 A CN 117345380A
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- exhaust gas
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- 238000003672 processing method Methods 0.000 title abstract description 4
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 claims abstract description 45
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 44
- 239000002912 waste gas Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- 239000012190 activator Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002341 toxic gas Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 230000008929 regeneration Effects 0.000 abstract description 11
- 238000011069 regeneration method Methods 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 9
- 239000002250 absorbent Substances 0.000 abstract description 6
- 230000002745 absorbent Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 62
- 229910002092 carbon dioxide Inorganic materials 0.000 description 32
- 239000000243 solution Substances 0.000 description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 238000006722 reduction reaction Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- -1 and finally Chemical compound 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000012629 purifying agent Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001302 tertiary amino group Chemical group 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
- F01N3/101—Three-way catalysts
-
- 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
- F01N13/009—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 having two or more separate purifying devices arranged in series
-
- 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
-
- 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
- F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0857—Carbon oxides
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses an exhaust gas processor, an exhaust gas processing method, an exhaust system and a vehicle, which belong to the technical field of exhaust gas processing. However, in the process, more unnecessary gasoline is burned to clean the tail gas, and more gasoline is burned to cause more exhaust emission, so that energy conservation and emission reduction cannot be realized at all. When the oil tank of the engine starting vehicle and the engine temperature of the engine are increased, the MDEA solution is reduced, so that the energy consumption generated by the evaporation latent heat of water during high-temperature regeneration of the solvent is reduced, the regeneration energy consumption of the absorbent is finally reduced, and the problem brought by the particle catcher can be exactly solved.
Description
Technical Field
The invention belongs to the technical field of tail gas treatment, and particularly relates to a tail gas processor, a tail gas treatment method, an exhaust system and a vehicle.
Background
In 2018, the transportation sector had a total carbon emission of about 9.4 hundred million tons, accounting for 10% of the total carbon emission. And the road transportation is always the most important carbon emission source in the traffic field of China, the ratio is maintained at about 80% for a long time, and the most important factor is the initiation of the greenhouse effect. So facing this environmental problem, our country is beginning to develop new energy automobiles. While CCUS is considered as the most potential and effective emission reduction means, carbon capture in CCUS is to separate carbon dioxide from the industrial production process, thereby achieving the purpose of recycling carbon dioxide. The technology for activating MDEA in carbon capture has the advantages of high processing capacity, small reaction heat, low regeneration energy consumption and the like, so that if the technology can realize the separation and storage of CO2 in automobile exhaust by adopting the MDEA technology in carbon capture on the basis of not changing an automobile engine, the technology is a very efficient and economic technical method.
Among these, serious foaming problems are important reasons for the impact of MDEA capture of CO2. The exhaust of automobiles often contains solid particles and heat-stable salts, and when the solid particles and heat-stable salts accumulate in the solution to a certain extent, the properties such as PH, viscosity and surface tension in the MDEA solution are changed, so that the solution is foamed. On the other hand, long-term operation of the device can also result in the defoamer component in the original MDEA solution being continually carried out and degraded, which can lead to foaming of the solution. Therefore, mechanical filtration is required to be enhanced for the case of solid particles, and the accuracy of filtration is required to be 5 μm or more. Secondly, aiming at the condition of high content of heat stability salt, the activated carbon powder ash can be put into an activated carbon filter device to find a proper filter bag, and the activated carbon powder ash is processed in a mode of ensuring that the activated carbon powder ash cannot be systematically processed. Finally, since the MDEA steam partial pressure is low, the entrainment loss of the purified gas and the regenerated gas is low, and therefore, if the method is applied to an automobile for decarburization, the solvent loss of the whole process is also low, so that the problems are solved, and the application designs an exhaust gas processor, an exhaust gas treatment method, an exhaust system and the automobile.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an exhaust gas processor, an exhaust gas processing method, an exhaust system and a vehicle, and the MDEA trapping device can well trap CO2 discharged from automobile exhaust, and can desorb an MDEA solution under the conditions of temperature rise and pressure reduction, so that the solution can be regenerated. On the other hand, when the automobile engine is started, the exhaust temperature is increased by raising the air-fuel ratio or the misfire angle, thereby burning off the accumulated particulate matter in the air pipe. However, in the process, more unnecessary gasoline is burned to clean the tail gas, and more gasoline is burned to cause more exhaust emission, so that energy conservation and emission reduction cannot be realized at all. When the oil tank of the engine starting vehicle and the engine temperature of the engine are increased, the MDEA solution is reduced, so that the energy consumption generated by the evaporation latent heat of water during high-temperature regeneration of the solvent is reduced, the regeneration energy consumption of the absorbent is finally reduced, and the problem brought by the particle catcher can be exactly solved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides an exhaust gas treatment ware, its includes the particle trap who connects at the engine outlet duct, MDEA trapping device is installed to particle trap's output, contain the activator in the MDEA trapping device, after adding the activator in the MDEA trapping device, the reaction formula is:
R2/NH+CO2＝R2/NCOOH R2/NCOOH+R2NCH3+H2O＝R2/NH+R2CH3NH+HCO3-
R2NCH3+CO2+H2O＝R2CH3NH+HCO3-。
specifically, the MDEA trap contains a solvent or solution capable of trapping CO2.
The tail gas treatment method is realized based on the tail gas processor, and specifically comprises the following steps of:
s1, exhausting waste gas generated after combustion of the combustible mixture out of an engine;
s2, enabling waste gas to enter an exhaust manifold to enable the resistance of each cylinder to be the same, so that the exhaust is smooth;
s3, the waste gas enters a three-way catalyst, and the three-way catalyst is mixed with the waste gas;
s4, enabling the waste gas and solid particles to enter a particle catcher to catch the ash and burn the ash into CO under high-speed operation 2 ；
S5, released C0 2 And some toxic gases enter the MDEA trapping device.
An exhaust system is realized based on an exhaust gas processor, and it includes engine, intake pipe and outlet duct, the intake pipe is installed to the input of engine, the outlet duct is installed to the output of engine, particle trap is installed to the output of outlet duct, the connecting pipe is installed to the output of particle trap, MDEA trapping device is installed to the output of connecting pipe.
Specifically, be connected with the booster between intake pipe and the outlet duct, install exhaust gas circulation module between the both ends of engine, install the choke valve on the pipeline between intake pipe and the exhaust gas circulation module.
A vehicle comprising a body and an exhaust system as described above.
Compared with the prior art, the invention has the beneficial effects that:
the MDEA trapping device can well trap CO2 discharged from automobile exhaust, and the MDEA solution can be desorbed under the conditions of temperature rise and pressure drop, so that the solution can be regenerated. On the other hand, when the automobile engine is started, the exhaust temperature is increased by raising the air-fuel ratio or the misfire angle, thereby burning off the accumulated particulate matter in the air pipe. However, in the process, more unnecessary gasoline is burned to clean the tail gas, and more gasoline is burned to cause more exhaust emission, so that energy conservation and emission reduction cannot be realized at all. When the oil tank of the engine starting vehicle and the engine temperature of the engine are increased, the MDEA solution is reduced, so that the energy consumption generated by the evaporation latent heat of water during high-temperature regeneration of the solvent is reduced, the regeneration energy consumption of the absorbent is finally reduced, and the problem brought by the particle catcher can be exactly solved.
Drawings
FIG. 1 is a schematic diagram of an exhaust system according to the present invention;
FIG. 2 is a schematic flow chart of the tail gas treatment method of the invention.
In the figure: 1. an engine; 2. a throttle valve; 3. a supercharger; 4. an exhaust gas circulation module; 5. an air inlet pipe; 6. an air outlet pipe; 7. a particle catcher; 8. a connecting pipe; 9. MDEA trapping device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Since the particulate traps currently owned by automobiles capture soot and solid particulate matter to emit CO2, the CO2 emission problem is not solved at all. The MDEA trapping device can well trap CO2 discharged from automobile exhaust, and the MDEA solution can be desorbed under the conditions of temperature rise and pressure reduction, so that the solution can be regenerated. On the other hand, when the automobile engine is started, the exhaust temperature is increased by raising the air-fuel ratio or the misfire angle, thereby burning off the accumulated particulate matter in the air pipe. However, in the process, more unnecessary gasoline is burned to clean the tail gas, and more gasoline is burned to cause more exhaust emission, so that energy conservation and emission reduction cannot be realized at all. When the oil tank of the engine starting vehicle and the engine temperature of the engine are increased, the MDEA solution is reduced, so that the energy consumption generated by the evaporation latent heat of water during high-temperature regeneration of the solvent is reduced, the regeneration energy consumption of the absorbent is finally reduced, and the problem brought by the particle catcher can be exactly solved.
As shown in fig. 1, one embodiment provided by the present invention: the utility model provides an exhaust gas treatment ware, its includes connects the particle trap 7 at engine 1 outlet duct 6, MDEA trapping device 9 is installed to particle trap 7's output, contain the activator in the MDEA trapping device 9, after adding the activator in the MDEA trap, the reaction formula is:
R2/NH+CO2＝R2/NCOOH R2/NCOOH+R2NCH3+H2O＝R2/NH+R2CH3NH+HCO3-
R2NCH3+CO2+H2O＝R2CH3NH+HCO3-。
in this embodiment, the MDEA trap contains a solvent or solution capable of trapping CO2, and since the trapping device adopts an MDEA trapping system, the solvent in the trapping system is essentially utilized to react with CO2, and finally, CO2 is absorbed. The solvent can be not only MDEA solvent, but also any solvent or solution capable of capturing CO2, such as a low-temperature methanol method, a pressure swing adsorption method, a chemical absorption method, a liquefied rectification method and the like which are commonly used for capturing CO2, can be used as a capturing system after tail gas, and only some reaction conditions are needed;
when the engine 1 is started, the exhaust gas of the engine 1 and some solid particulate matters first pass through an exhaust manifold and then enter a three-way catalyst after coming out of a cylinder, and the purifying agent of the three-way catalyst enhances the activities of three gases of CO, HC and NOx and promotes the three gases to perform a certain oxidation-reduction reaction, wherein CO is oxidized into CO2 gas at high temperature, and pollutants in the discharged tail gas are reduced. The gas and some solid particulates will then reach the particulate trap 7 at the rear end of the three-way catalyst to trap and oxidize some soot and solid particulates, which is then regenerated, which corresponds to ignition of the particulates, and the accumulation within the trap will be burned to produce CO2. An MDEA trap is then installed after the particle trap 7, which traps the CO2 emitted.
The aqueous solution in the MDEA trap now reacts with CO 2:
CO2+H2O＝H++HCO3-H++R2NCH3＝R2NCH3H+
the rate at this point is relatively slow, so that an activator (which had to be added before) is required to be added to the MDEA trap, after which the reaction is:
R2/NH+CO2＝R2/NCOOH R2/NCOOH+R2NCH3+H2O＝R2/NH+R2CH3NH+HCO3-
R2NCH3+CO2+H2O＝R2CH3NH+HCO3-
from the above equation, the activator absorbs CO2 and transfers CO2 like a liquid phase, greatly speeding up the reaction, and MDEA is regenerated again. MDEA contains a tertiary amine group in the molecule, and generates bicarbonate after absorbing CO2, so that heat is much lower, and finally the energy consumption of the absorbent is reduced. On the other hand, the invention can remove sulfide while removing CO2, and has high absorption capacity, low heat energy consumption and little solution loss.
The MDEA trapping device 9 can well trap CO2 discharged from automobile exhaust, and the MDEA solution can be desorbed under the conditions of temperature rise and pressure reduction, so that the solution can be regenerated. On the other hand, when the automobile engine 1 is started, the exhaust temperature is increased by raising the air-fuel ratio or the misfire angle, thereby burning off the accumulated particulate matter in the air pipe. However, in the process, more unnecessary gasoline is burned to clean the tail gas, and more gasoline is burned to cause more exhaust emission, so that energy conservation and emission reduction cannot be realized at all. When the engine 1 starts the oil tank of the vehicle and the engine 1 increases in engine temperature, the MDEA solution is reduced, so that the energy consumption caused by the evaporation latent heat of water during high-temperature regeneration of the solvent is reduced, the regeneration energy consumption of the absorbent is finally reduced, and the problem brought by the particle catcher can be exactly solved.
Example 2
As shown in fig. 2, the exhaust gas treatment method is realized based on the exhaust gas treatment device, and specifically comprises the following steps:
s1, exhaust gas generated after combustion of the combustible mixture is discharged out of the engine 1;
s2, enabling waste gas to enter an exhaust manifold to enable the resistance of each cylinder to be the same, so that the exhaust is smooth;
s3, the waste gas enters a three-way catalyst, and the three-way catalyst is mixed with the waste gas;
s4, enabling the waste gas and solid particles to enter a particle catcher, capturing the soot, and burning the soot into CO2 under high-speed operation;
s5, released C02 and some toxic gases enter the MDEA trapping device 9.
Example 3
As shown in fig. 1, an exhaust system is realized based on the exhaust gas processor, which comprises an engine 1, an air inlet pipe 5 and an air outlet pipe 6, wherein the air inlet pipe 5 is installed at the input end of the engine 1, the air outlet pipe 6 is installed at the output end of the engine 1, a particle catcher 7 is installed at the output end of the air outlet pipe 6, a connecting pipe 8 is installed at the output end of the particle catcher 7, and an MDEA trapping device 9 is installed at the output end of the connecting pipe 8.
Specifically, a supercharger 3 is connected between the air inlet pipe 5 and the air outlet pipe 6, an exhaust gas circulation module 4 is installed between two ends of the engine 1, and a throttle valve 2 is installed on a pipeline between the air inlet pipe 5 and the exhaust gas circulation module 4.
Example 4
A vehicle comprising a body and an exhaust system as described above.
In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the partitioning of units is merely one, and there may be additional partitioning in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The utility model provides a tail gas treater, its characterized in that includes particle trap (7) of connecting at engine (1) outlet duct (6), MDEA trapping device (9) are installed to the output of particle trap (7), contain the activator in MDEA trapping device (9), after adding the activator in the MDEA trap, the reaction formula is:
R2/NH+CO2＝R2/NCOOH R2/NCOOH+R2NCH3+H2O＝R2/NH+R2CH3NH+HCO3-R2NCH3+CO2+H2O＝R2CH3NH+HCO3-。
2. an exhaust gas treatment device according to claim 1, wherein said MDEA trap contains a solvent or solution capable of trapping CO2.
3. A method for treating exhaust gas, which is based on the exhaust gas treatment device according to claim 1 or 2, characterized in that it comprises in particular the following steps:
s1, exhausting waste gas generated after combustion of the combustible mixture out of an engine (1);
s2, enabling waste gas to enter an exhaust manifold to enable the resistance of each cylinder to be the same, so that the exhaust is smooth;
s3, the waste gas enters a three-way catalyst, and the three-way catalyst is mixed with the waste gas;
s4, enabling the waste gas and solid particles to enter a particle catcher, capturing the soot, and burning the soot into CO2 under high-speed operation;
s5, released C02 and some toxic gases enter the MDEA trapping device (9).
4. An exhaust system based on an exhaust gas processor according to claim 1 or 2, characterized in that it comprises an engine (1), an air inlet pipe (5) and an air outlet pipe (6), wherein the air inlet pipe (5) is installed at the input end of the engine (1), the air outlet pipe (6) is installed at the output end of the engine (1), the particle catcher (7) is installed at the output end of the air outlet pipe (6), the connecting pipe (8) is installed at the output end of the particle catcher (7), and the MDEA trapping device (9) is installed at the output end of the connecting pipe (8).
5. An exhaust system according to claim 4, characterized in that a supercharger (3) is connected between the air inlet pipe (5) and the air outlet pipe (6), an exhaust gas circulation module (4) is arranged between the two ends of the engine (1), and a throttle valve (2) is arranged on a pipeline between the air inlet pipe (5) and the exhaust gas circulation module (4).
6. A vehicle comprising a vehicle body and an exhaust system according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311388297.9A CN117345380A (en) | 2023-10-25 | 2023-10-25 | Tail gas processor, tail gas processing method, exhaust system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311388297.9A CN117345380A (en) | 2023-10-25 | 2023-10-25 | Tail gas processor, tail gas processing method, exhaust system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117345380A true CN117345380A (en) | 2024-01-05 |
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ID=89357239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311388297.9A Withdrawn CN117345380A (en) | 2023-10-25 | 2023-10-25 | Tail gas processor, tail gas processing method, exhaust system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117345380A (en) |
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2023
- 2023-10-25 CN CN202311388297.9A patent/CN117345380A/en not_active Withdrawn
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