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GB2497867A - Removing carbon dioxide from exaust using an amine solution - Google Patents

Removing carbon dioxide from exaust using an amine solution Download PDF

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Publication number
GB2497867A
GB2497867A GB1223126.2A GB201223126A GB2497867A GB 2497867 A GB2497867 A GB 2497867A GB 201223126 A GB201223126 A GB 201223126A GB 2497867 A GB2497867 A GB 2497867A
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GB
United Kingdom
Prior art keywords
carbon dioxide
solution
text
exhaust gas
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.)
Withdrawn
Application number
GB1223126.2A
Other versions
GB201223126D0 (en
Inventor
Kiran Sathyan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Priority to GB1223126.2A priority Critical patent/GB2497867A/en
Publication of GB201223126D0 publication Critical patent/GB201223126D0/en
Publication of GB2497867A publication Critical patent/GB2497867A/en
Withdrawn legal-status Critical Current

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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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/204—Amines
    • B01D2252/20405—Monoamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/22—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • 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
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A method for removal of carbon dioxide (CO2) 42 from exhaust gas, in particular from a vehicle engine. Carbon dioxide from the exhaust gas is captured by a solution 20 containing at least one amine. The exhaust gas may be cooled in a cooling chamber, using a coolant 32, to a temperature of less than 100ºC, in particular to about 60ºC. At least part of the solution containing absorbed carbon dioxide may be removed from a reaction chamber 18 and heated, preferably by heat contained in the exhaust gas, to more than 100ºC to remove the carbon dioxide there from. The removed carbon dioxide may be stored in a vehicle fuel tank equipped with a moveable separator, and then used as a coolant in air conditioning, or in engine and/or exhaust cooling. The exhaust system may comprise a reservoir which contains the amine solution, and means to introduce the solution into the exhaust.

Description

Method for removal of carbon dioxide from exhaust gas and exhaust system The invention relates to a method for removal of carbon dioxide from exhaust gas. in which carbon dioxide from the exhaust gas is captured by a substance. The invention also relates to a exhaust system of a vehicie.
Document US 7 820 591 82 describes a dry regenerable sorbent for carbon &oxide capture from exhaust gas produced by fossil fuel-fired power plants. The dry regenerable sorbent comprises an active component selected from solid compounds capable of being converted into metal carbonates.
The handling of such dry sorbents is quite laborious.
It is therefore the object of the present invention to provide a method as well as an exhaust system of the initially mentioned type, by means of which removal of carbon dioxide from exhaust gas can be achieved in a particularly simple manner.
This object is solved by a method having the features of claim 1 and by an exhaust system having the features of claim 9. Advantageous embodiments with convenient developments of the invention are specified in the dependent claims.
In the method according to the invention a solution containing at least one amine is utilized as the substance which absorbs the carbon dioxide. An amine containing so'ution has the property to selectively absorb carbon dioxide especially at low temperatures. The solution can also liberate the carbon dioxide at higher temperatures. This enables recycling of the solution. As such amine containing solutions are readily available at low costs removal of carbon dioxide from exhaust gas can be particularly simply achieved by utilizing such a solution.
With the carbon dioxide removed from the exhaust gas carbon dioxide is liberated to a lesser extent to the atmosphere. This helps in reducing the greenhouse effect.
As a solution containng at feast one amine especially an aqueous solution of Mono-Ethanol-Amine (MEA) can be utilized.
In an advantageous embodiment of the invention the exhaust gas is cooled to less than 100°C before or during the absorption of carbon dioxide in the solution. As the exhaust gas is being cooled down! the extraction of carbon dioxide from the exhaust gas by absorption becomes more efficient. This is in particular valid, if the exhaust gas is cooled to about 60 °C.
Furthermore, by cooling down the exhaust gas the temperature of the exhaust gas released into the atmosphere is reduced, This facilitates the design of the exhaust system, in particular of an end pipe of the exhaust system.
In order to efficiently and rapidly cool dawn the exhaust gas a coolant can be introduced into a cooling chamber of the exhaust system. In this manner the exhaust gas can be cooled down particularly well and easily.
It has further proven to be advantageous, if at feast a part of the solution containing absorbed carbon dioxide is removed from a reaction chamber of an exhaust system, in which the absorption of carbon dioxide takes place. In this manner the concentration of carbon dioxide in the exhaust gas can be readily reduced. If a cooling chamber is utilized to cool the exhaust gas, the reaction chamber can be provided by this cooling chamber or by a part of the cooling chamber.
Preferably at least a part of the solution containing absorbed carbon dioxide is heated in order to regenerate the solution by removal of carbon dioxide from the solution. Thus a storage volume necessary for storing the solution can be kept relatively small. It has shown to be especially effective, if the solution which contains absorbed carbon dioxide is heated to more than 100 °C, as above this temperature carbon dioxide is readily liberated from the solution.
If heat contained in the exhaust gas is utilized to heat at least the part of the solufion containing absorbed carbon dioxide no other heat source needs to be provided. Also at the same time heating of the solution to be regenerated and cooling down of the exhaust gas for facilitating the absorption of carbon dioxide in a reaction chamber can be achieved. The need for external sources of heat and coolant can thus be minimised.
In order to provide for an utilization of the removed carbon dioxide, it has proven to be advantageous, if the carbon dioxide removed from the solution is stored in a container.
the removed carbon dioxide is then available for further applications.
For example the carbon dioxide can be utilized as cooling agent in an air conditioning unit of a vehicle. Carbon dioxide as an alternative to known coolants such as halogenated fluorocarbons like R134a or R404A has a much lower impact on the greenhouse effect than these fluorocarbons. The greenhouse effect activity is 1300 times less important for carbon dioxide compared to the fluorocarbons.
Regarding the heat capacity and efficiency carbon dioxide is also highly competitive in applications like air conditioning as a very good compressor performance, a very good heat transfer and a lower effect in case of pressure losses can be achieved in an air conditioning system. If carbon dioxide is used as a coolant, it is easily possible to reach more than 6000 operating hours. At ambient temperatures carbon dioxide has a 15% to 20% higher capacity of heat transfer compared to R134a as coolant.
The carbon dioxide stored in the container can also be utilized for engine cooling and(or for cooling the exhaust gas.
In a further advantageous embodiment of the invention a fuel tank of the vehicle is utilized as the container. Storing carbon dioxide in at least a volume of a fuel tank can reduce the emission of fuel vapors from the fuel tank. This may help in lowering the effort for mechanisms which are normafly employed for a reduction of emissions of fuel vapors from the fuel tank. The carbon dioxide may also at least partly be stored outside the fuel tank. That is, storage of carbon dioxide may be provided for in andIor around the fuel tank.
As the amount of carbon dioxide to be stored is proportional to the amount of fuel consumed, it is particularly advantageous, if a fuel tank equipped with a movable separator is utUized for the storage of the carbon dioxide. The movable separator separates a variable volume of the fuel tank for the storage of carbon dioxide, while in a remaining volume of the fuel tank fuel is stored. Upon refuelling the carbon dioxide stored in the fuel tank may than be offloaded.
By utilizing the fuel tank of the vehicle as the container for the storage of carbon dioxide space constraints are less severe, and the installation space within the vehicle is efficiently utilized.
The exhaust system of a vehicle according to the invention comprises an exhaust pipe, a reservoir with a solution containing at east one amine and means for introducing the solution into the exhaust pipe. Carbon dioxide from the exhaust gas is absorbable by the amine containing solution. By injecting the solution into the exhaust gas, removal of carbon dioxide from the exhaust gas can be achieved in a particularly simple manner.
The preferred embodiments presented with respect to the method for removal of carbon dioxide and the advantages thereof correspondingly apply to the exhaust system according to the invention.
The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of figures and/or shown in the figures alone are usable not only in the respectively specified combination, but also in other combinations or atone without departing from the scope of the invention, Further advantages: features and details of the nvention are apparent from the claims, the following description of preferred embodiments as well as based on the drawings, in which identical or functionally identical elements are provided with identical reference characters. Therein show: Fig. 1 a sectional view of an exhaust system of a vehicle, wherein an injector is provided for injecting a Mono-Ethanol-Amine solution into a reaction chamber or absorber of the exhaust system; Fig. 2 a fuel tank of the vehicle, which comprises a movable separator permiUing the separation of a volume of the fuel tank to be utilized for the storage of carbon dioxide; Fig. 3 the fuel tank of Fig. 2 which is partly filled with carbon dioxide and partly filled with fuel; Fig. 4 the fuel tank of Fig. 2 which is completely filled with carbon dioxde; and Fig. S a graph showing the absorption efficiency of the Mono-Ethanol-Amine containing solution as a function of the time during which absorption of carbon dioxide in the solution takes place.
Fig. 1 shows partiafly an exhaust system 10 of a vehicle, in which removal of carbon dioxide from the exhaust gas takes place, The exhaust system 10 comprises an exhaust pipe 12 with an inlet 14 and an outlet 16. Between the inlet 14 and the outlet 16 a chamber of a higher volume is provided which is utilized as a reaction chamber or absorber 18. In this absorber 18 carbon dioxide is removed from the exhaust gas. This is achieved by injecting a solution 20 which contains at least one amine, for example inonoethanolamine (MEA). The chemical behaviour of the solution 20 containing MEA is used as a key principal in the extraction of carbon dioxide from the exhaust gas flowing through the exhaust pipe 12.
The chemical reactions taking place in the absorber 18 are as follows: H20+MEA -.H3O4-MEA 2H20 -. H30 + OH' H20 + HCO3' +-* H30 + CO CO2 + OH' -. HCO3 H003' -. 002 + Oh' H2O + 002 + MEA -. MEAC0 + l'1O MEACOO + H304 -, *H20 ÷ CO2 ÷ MEA The solution 20 is injected into the absorber 16 via a multitude of openings 22 of a multipoint injector 24.
As the absorption of carbon dioxide by the monoethanolamine contained in the solution 20 depends on the temperature, the exhaust gas is cooled down. Preferably exhaust gas is cooled to 60 °C, as at this temperature the absorption reaction is very efficient. In order to cool down the exhaust gas, the exhaust gas is passed into the absorber 18, which has a larger diameter and a larger volume than the inlet 14 of the exhaust pipe 12.
For an even more efficient cooling down of the exhaust gas a heat exchanger 26 is arranged in the absorber 18 for example in the form of a coolant pipe with an inlet 28 and an outlet 30. A coolant 32 is passed through the heat exchanger 26. The absorber 18 therefore also has the functionality of a cooling chamber.
Once the desired temperature is reached in the absorber 18, the aqueous solution 20 of monoethanolarnine is injected into the absorber 18. This triggers the chemica) reaction between monoethanolarnine and carbon dioxide. As the aqueous solution 20 of monoethanolamine comes in contact with the cooled down exhaust gas, absorption of carbon dioxide takes place.
For transporting the solution 20 to the openings 22 a pump 34 is provided. In the absorber 18 or absorption chamber the solution 20 containing carbon dioxide which is chemically bound to the monoethanolamine tends to settle near a bottom of the absorber 18. This is because the solution 20 containing absorbed carbon dioxide is heavier than the solution 20 before the reaction with the carbon dioxide takes place.
A drainage 36 is provided at a bottom part of the absorber 18. Another pump 36 transports the solution 20 which is rich in carbon dioxide from the drainage 36 to another heat exchanger which functions as a regenerator 40. In this regenerator 40 the carbon dioxide containing solution 20 is heated to about 100 °C. Upon this heating the carbon dioxide containing aqueous solution of monoethanolamine liberates carbon dioxide 42 and the solution 20 is regenerated.
In the exhaust system 10 shown in Fig. 1 the heat content of the exhaust gas is used in the process of regeneration. To achieve this! the generator 40 is in contact with the inlet 14 of the exhaust pipe 12, which leads to the absorber 18. The utilization of the temperature of the exhaust gas for the regeneration helps reducing additional energy requirements for the regeneration process. At the same time the exhaust gas is cooled before it enters the absorber 18. This helps reaching lower temperatures within the absorber 18, which are desirable for an efficient absorption of carbon dioxide, The carbon dioxide removed from the solution 20 in the regenerator 40 is transported to a fuel tank 44 of the vehicle which is utilized as storage container. The time interval for offloading the carbon dioxide stored in the fue' tank 44 depends on the size of this storage container. The amount of carbon dioxide to be stored is proportional to the fuel consumed. Based on this finding the fuel tank 44 comprises a movable separator 46 which separates the fuel tank 44 into a first volume containing fuel 46 and a second volume 50 containing the carbon dioxide 42 removed from the exhaust gas. Fig. 2 shows an situation in which the fuel tank 44 contains almost 100 % fuel 48.
Fig. 3 shows a situation in which a larger volume 50 of the fuel tank 44 it is occupied by carbon dioxide 42, whereas the quantity of fuel 48 is reduced. Consequently the separator 48 is moved into a position which takes account of this situation.
In the situation schematically shown in Fig. 4 the fuel tank 44 contains almost no fuel 48 and consequently nearly 100% of carbon dioxide. Upon refuelling the carbon dioxide contained in the volume 50 of the fuel tank 44 is offloaded. The carbon dioxide 42 captured from the exhaust gas can be utilized for a variety of applications including air conditioning, engine cooling, and as the coolant 32 utilized in the heat exchanger 28.
The monoehtanolamine contained in the solution 20 is also known as 2-Hydroxyethylamine. 2-Aminoethanol or 3-Aminoethyl Alcohol. The chemical family is that of the alcanolamines, and the molecular formula is: NH2CH2CH2OH.
At room temperature the solution 20 has a water-white appearance and is viscous as water. The solution 20 has a mild ammoniac order. The solution 20 has a boiling point of 171 °C and a melting point of 10.3 °C The utilization of the monoethanolamine solution 20 is advantageous for the removal of carbon dioxide from the exhaust gas. Monoethanolamine is solvable in water, alcohol and chloroform, and the utilization of an aqueous solution wkhin the removal process of carbon dioxide from the exhaust gas is preferred, The ph of the aqueous solution 20 is between 11.5 and 12.2.
In a graph 52 shown in Fig. 5 the response time and the resulting carbon dioxide absorption efficiency of he solution 20 is Ulustrated. On an abscissa 54 the time necessary for absorption of carbon dioxide is plotted in minutes. On an ordinate 56 the percentage of carbon dioxide which may be absorbed by the solution 20 alSO °C is plotted. As can be seen from a curve 58 in Fig. 5 after about 10 minutes the maximum of carbon dioxide absorption is reached.
Therefore, the longer the dwell time of the solution 20 in the absorber 18 is1 the larger is the quantity of carbon dioxide that can be removed from the exhaust gas, This can be achieved by providing an appropriate volume of the absorber 18, which is also useful for providing enough space for the mixing of the exhaust gas with the solution 20. $

Claims (1)

  1. <claim-text>LIClaims Method for removal of carbon dioxide (42) from exhaust gas, in particular of a vehicle, in which carbon dioxide (42) from the exhaust gas is captured by a substance, characterized in that a solution (20) containing at least one amine is utilized as the substance which absorbs the carbon dioxide (42).</claim-text> <claim-text>2. Method according to claim 1, characterized in that the exhaust gas is cooled to less than 100 °C, in particular to about 60°C, before or during the absorption of carbon dioxide (42) in the solution (20).</claim-text> <claim-text>3. Method according to claim 1 or 2, characterized in that the exhaust gas is cooled in a cooling chamber of an exhaust system (10) by introducing a coolant (32) into the cooBng chamber.</claim-text> <claim-text>4. Method according to any one of claims ito 3, characterized in that at least a part of the solution (20) containing absorbed carbon dioxide (42) is removed from a reaction chamber (18) of an exhaust system (10), in which the absorption of carbon dioxide (42) takes place.</claim-text> <claim-text>5. Method according to any one of claims ito 4, characterized in that at least a part of the solution (20) containing absothed carbon dioxide (42) is heated, in particular to more than 100 t, in order to regenerate the solution (20) by removal of carbon dioxide (42) from The solution (20).</claim-text> <claim-text>6. Method according to claim 6, characterized in that heat contained in the exhaust gas is utilized to heat at least the part of the solution (20) containing absorbed carbon dioxide (42).</claim-text> <claim-text>7. Method according to any one of claims Ito 6, characterized in that carbon dioxide (42) removed from the solution (20) is stored in a container (44).</claim-text> <claim-text>B. Method according to eSaim 7, characterized in that a fuel tank (44) of the vehicle, in particular a fuel tank (44) equipped with a movabte separator (46), is utilized as the container.</claim-text> <claim-text>9. Method according to any one of claims ito 8, characterized in that carbon dioxide (42) removed from the solution (20) is used as cooling agent in an air conditioning unit and/or utilized in engine and/or exhaust cooling.</claim-text> <claim-text>10. Exhaust system of a vehicle, with an exhaust pipe (12), charaäterized in that the exhaust system comprises a reservoir with a solution (20) containing at least one amine and means (24) for introducing the solution (20) into the exhaust pipe (12), wherein carbon dioxide (42) from the exhaust gas is absorbable by the solution (20).</claim-text>
GB1223126.2A 2012-12-20 2012-12-20 Removing carbon dioxide from exaust using an amine solution Withdrawn GB2497867A (en)

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GB2497867A true GB2497867A (en) 2013-06-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170030234A1 (en) * 2012-12-28 2017-02-02 Deep Science Llc Systems and methods for managing emissions from an engine of a vehicle
CN111022154A (en) * 2018-10-10 2020-04-17 丰田自动车株式会社 Exhaust gas purification device for internal combustion engine
US12030013B2 (en) 2021-10-22 2024-07-09 Saudi Arabian Oil Company Process for capturing CO2 from a mobile source using exhaust heat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416139A (en) * 2004-07-16 2006-01-18 Howard Paul Davis Mist injector for gas treatment
US20070068389A1 (en) * 2005-09-26 2007-03-29 Yaghi Omar M Metal-organic frameworks with exceptionally high capacity for storage of carbon dioxide at room-temperature
GB2449165A (en) * 2007-05-08 2008-11-12 Gen Electric Methods and systems for reducing carbon dioxide in combustion flue gases
WO2011011830A1 (en) * 2009-07-29 2011-02-03 Commonwealth Scientific And Industrial Research Organisation Ionic liquids
WO2012100165A1 (en) * 2011-01-20 2012-07-26 Saudi Arabian Oil Company Οn-board recovery and storage of c02 from motor vehicle exhaust gases
JP2012170414A (en) * 2011-02-23 2012-09-10 Nitto Boseki Co Ltd Method for promoting photosynthesis of photosynthetic organism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416139A (en) * 2004-07-16 2006-01-18 Howard Paul Davis Mist injector for gas treatment
US20070068389A1 (en) * 2005-09-26 2007-03-29 Yaghi Omar M Metal-organic frameworks with exceptionally high capacity for storage of carbon dioxide at room-temperature
GB2449165A (en) * 2007-05-08 2008-11-12 Gen Electric Methods and systems for reducing carbon dioxide in combustion flue gases
WO2011011830A1 (en) * 2009-07-29 2011-02-03 Commonwealth Scientific And Industrial Research Organisation Ionic liquids
WO2012100165A1 (en) * 2011-01-20 2012-07-26 Saudi Arabian Oil Company Οn-board recovery and storage of c02 from motor vehicle exhaust gases
JP2012170414A (en) * 2011-02-23 2012-09-10 Nitto Boseki Co Ltd Method for promoting photosynthesis of photosynthetic organism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170030234A1 (en) * 2012-12-28 2017-02-02 Deep Science Llc Systems and methods for managing emissions from an engine of a vehicle
US9879579B2 (en) * 2012-12-28 2018-01-30 Deep Science Llc Systems and methods for managing emissions from an engine of a vehicle
CN111022154A (en) * 2018-10-10 2020-04-17 丰田自动车株式会社 Exhaust gas purification device for internal combustion engine
US12030013B2 (en) 2021-10-22 2024-07-09 Saudi Arabian Oil Company Process for capturing CO2 from a mobile source using exhaust heat

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Publication number Publication date
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