WO2012007084A1 - Co2 removal from gases with low co2 partial pressures by means of n-isopropyl-1,3-propanediamine - Google Patents

Co2 removal from gases with low co2 partial pressures by means of n-isopropyl-1,3-propanediamine Download PDF

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Publication number
WO2012007084A1
WO2012007084A1 PCT/EP2011/002825 EP2011002825W WO2012007084A1 WO 2012007084 A1 WO2012007084 A1 WO 2012007084A1 EP 2011002825 W EP2011002825 W EP 2011002825W WO 2012007084 A1 WO2012007084 A1 WO 2012007084A1
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Prior art keywords
absorbent
ν
propanediamine
group
use
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PCT/EP2011/002825
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German (de)
French (fr)
Inventor
Johannes Menzel
Olaf Von Morstein
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Uhde Gmbh
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • B01D53/1456Removing acid components
    • B01D53/1475Removing carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/62Carbon oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/2041Diamines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20421Primary amines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20426Secondary amines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection
    • Y02A50/20Air quality improvement or preservation
    • Y02A50/23Emission reduction or control
    • Y02A50/234Physical or chemical processes, e.g. absorption, adsorption or filtering, characterised by the type of pollutant
    • Y02A50/2342Carbon dioxide [CO2]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C10/00CO2 capture or storage
    • Y02C10/04Capture by chemical separation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C10/00CO2 capture or storage
    • Y02C10/06Capture by absorption

Abstract

The use of an absorbent for removal of acidic gases from a fluid stream comprising an aqueous solution of N-isopropyl-1,3-propanediamine, wherein the fluid stream is contacted with the absorbent at a partial pressure of < 200 mbar, and wherein the absorbent contains 40 to 65% of N-isopropyl-1,3-propanediamine based on the weight of the absorbent.

Description

C0 2 removal from gases at low partial pressures of C0 2 by means of N-isopropyl-1,3-propanediamine

[0001] The invention relates to the use of an absorbent for the removal of C0 2 from industrial gases.

[0002] The removal of C0 2 from industrial gases is of particular importance to the reduction of C0 2 emissions, since C0 2 is regarded as the main cause of the greenhouse effect.

[0003] In the industry, are often aqueous solutions of organic bases, for example alkanolamines used for removing acid gas components as the absorbent. [0004] The absorbent is then regenerated by the application of heat, pressure reduction, or stripping by means of suitable auxiliary agents. After regeneration, the absorbent is available as a regenerated solvent for the absorption of

Sour gas components available again. [0005] Flue gases from the combustion of fossil fuels, now fall to approximately atmospheric pressure. Since the C0 2 content in the flue gases is typically about 3 to 13% by volume, the C0 2 partial pressure is therefore only from 0.03 to 0.13 bar. By 's to obtain a sufficient removal of C0 2 at these low partial pressures of C0 2 from the flue gases, has a suitable

Absorbents have a very high binding capacity for C0 second In particular, a very high absorption capacity should also be present at low C0 2 partial pressures already.

[0006] By the absorption capacity of the absorbent the required absorbent circulation rate and the size and cost of the required equipment is essentially determined. Since the energy required for heating and cooling of the absorbent is proportional to the circulation rate, the regeneration energy required for the regeneration of the solvent, the circulation rate of the absorbent is also reduced in a substantial manner, if it is possible to reduce.

CONFIRMATION COPY [0007] In addition to high capacity should a suitable

Absorbents in particular but also have a very high stability to oxygen, because especially in flue gases is always a certain amount of oxygen is present. From the literature it is known that many amine compounds that would otherwise have favorable absorption characteristics, are easily decomposed in the presence of oxygen, which on the one hand to a high

Absorbent consumption and secondly to correspondingly high costs leads. The decomposition products resulting usually lead to significantly increased corrosion and may on the other hand significantly reduce the capacity of the absorbent.

[0008] Volatile decomposition products such as ammonia would have the effect that the C0 2 product and the C0 2 scrubbing flue gas leaving would contaminated with unacceptable emission components. Avoiding these emissions makes additional process steps are necessary, thereby further increasing the cost of C0 2 scrubbing.

[0009] There is therefore a considerable need for an absorbent which has a high absorption capacity as possible for C0 2 at low partial pressures of <1 bar, in particular <0.2 bar, and has even under the conditions

Absorbent regeneration is thermally stable. Meeting this requirement, that is, the provision of such absorbent, and a method for the removal of C0 2 from industrial gases, the present invention has made the task.

[0010] The object wherein the fluid stream with the absorbent is contacted at a partial pressure of <200 mbar is achieved by the use of an absorption agent containing N-isopropyl-1, 3-propanediamine in aqueous solution, and wherein the absorbent based on the weight of the

contains absorbent 40 to 65% of N-isopropyl-1, 3propandamin.

[0011] In one embodiment of the invention, the absorption agent to be used also contains at least one additional N-isopropyl-1, 3- propanediamine different amine. Thus, the inventive absorbent, for example, 5 to 45% by weight, preferably 10 to 40 wt% contain one or more different amines thereof. [0012] The at least one of N-isopropyl-1 3-propanediamine different, more amine is selected for example from:

A) tertiary amines of the general formula:

N (R1). 2 n (R2) n + 1

or wherein R 1 is an alkyl group and R2 is a hydroxyalkyl group

tertiary amines of the general formula:

(R1). 2 n (R2) n NXN (R1) 2-m (R2) m

wherein R1 is an alkyl group, R2 is a hydroxyalkyl group, X is an alkylene group that is interrupted several times once or by oxygen, and n and m represents an integer of 0 is to 2, or two groups bonded to different nitrogen atoms, R1 and R 2 together represents an alkylene group, B) sterically hindered amines,

C) 5-, 6-, or 7-membered saturated heterocycle having at least one NH group in the ring, one or two further heteroatoms selected may contain in the ring from nitrogen and oxygen,

D) primary or secondary Alkonolaminen,

E) alkylenediamines of the formula:

H 2 N-R2-NH 2

wherein R2 is a C 2 - 6 alkyl to C.

[0013] In a preferred embodiment of the invention, the tertiary amines, which are in addition to N-isopropyl-1 was used, 3-propanediamine, selected from a group comprising tris (2-hydroxyethyl) amine, tris (2-hydroxypropyl) amine are , tributanolamine, bis (2-hydroxyethyl) methylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, 3-dimethylamino-1-propanol, 3-diethylamino-1-propanol, 2-diisopropylaminoethanol, N, N-bis (2-hydroxypropyl) methylamine

(Methyldiisopropanolamine, MDIPA), Ν, Ν, Ν ', Ν'-tetramethylethylenediamine, N, N-diethyl-N', N'-dimethylethylenediamine, N, Ν, Ν ', Ν'-tetraethylethylenediamine, N, Ν, Ν' , Ν'- tetramethylpropanediamine, N, N, N ', N'-Tetraethylpropandiamin, NN-dimethyl-N'.N'- diethylethylenediamine, 2- (2-dimethylaminoethoxy) -N, N-dimethylethanamine; 1, 4-

Diazabicyclo [2.2.2] octane (DABCO); N, N, N * -Trimethylaminoethylethanolamin, N, N'-dimethyl piperazine and N, N'-bis (hydroxyethyl) piperazine. Further suitable tertiary amines are 2008/145658 A1, WO, US 4,217,236 and US 2009/0199713 A1 discloses.

[0014] In a further embodiment, the sterically hindered amines in addition to N-isopropyl-1 was used, 3-propanediamine, selected from a group comprising 2-amino-2-methyl-1-propanol, 2-amino 2-methyl-1-butanol, 3-amino-3-methyl-1-butanol, 3-amino-3-methyl-2-pentanol and l-amino-2-methylpropanesulfonic 2-ol. Other eligible hindered amines are described in WO

2008/145658 A1, US 4,217,236, US 2009/0199713 A1, US 5,700,437, US 6,500,397 B1 and US 6,036,931 mentioned.

[0015] Optionally, the 5-, 6-, or 7-membered saturated heterocycles which, in addition to N-isopropyl-1 was used, 3-propanediamine, selected from a group comprising, piperazine, 2-methylpiperazine, N-methylpiperazine , N-ethylpiperazine, N-aminoethylpiperazine, homopiperazine, piperidine and orpholin.

Other compounds are available, WO 2008/145658 A1 describe and US 2009/0199713 A1.

[0016] Advantageously, the primary or secondary alkanolamines which, in addition to N-isopropyl-1 was used, 3-propanediamine, selected from a group comprising, 2-aminoethanol, N, N-bis amine (2-hydroxyethyl), N, amine (2-hydroxy-propyl), bis N-2- (methylamino) ethanol, 2- (ethylamino) ethanol, 2- (n-butylamino) ethanol, 2-amino-1-butanol, 3-amino-1 propanol and 5-amino-1-pentanol. Even this more possible connections in the documents WO 2008/145658 A1 and US 2009/0199713 A1 disclosed.

[0017] In a further embodiment of the invention the alkyl diamines, which are used in addition to N-isopropyl-1, 3-propanediamine are selected from a group comprising, hexamethylenediamine, 1, 4-diaminobutane, 1, 3-diaminopropane, 2, 2-Dimethyl1, 3-diaminopropane, 3-methylaminopropylamine, 3-

(Dimethylamino) propylamine, 3- (diethylamino) propylamine, 4-dimethylaminobutylamine, and 5-dimethylaminopentylamine, 1, 1, N, N-tetramethylethanediamine, 2.2, N, N- tetramethyl-1, 3-propanediamine, N, N ' dimethyl-1, 3-propanediamine, N, N'-bis (2-hydroxyethyl) ethylenediamine. In addition, all components are concerned, in WO 2008/145658 A1 and US 2009/0199713 A1 as such

Marked are. [0018] by heating the loaded absorption medium, relaxation, stripping by means generated by internal evaporation of the solvent Strippdämpfen is advantageously regenerated by stripping with an inert fluid, or a combination of two or all of these measures.

[0019] The present invention will be described by way of example in detail.

[0020] Example: Determination of CQ 2 uptake capacity

For the synthetic Gaslöslichkeitsmessungen (isothermal data Px) a static phase equilibrium apparatus was used according to the synthetic measurement principle. In this arrangement, the pressure for different is

Gross compositions of a mixture at a constant temperature measured. The temperature-controlled, cleaned and degassed solvent with the help of

Dosing pumps that allow show, filled into an evacuated and thermostatted measuring cell small volume differences. Then the gas is added in small increments. Which is then at a certain pressure in the

Absorption solution, which is C0 2 is determined by calculation, taking account of the gas space.

[0021] It was the C0 2 uptake for a C0 2 partial pressure of 0.1 bar at a temperature of 40 ° C and the relative absorption capacity of N-isopropyl-1, 3- propanediamine compared to monoethanolamine (MEA) is determined ,

Tab. 1:

Figure imgf000006_0001

From the results shown in Table 1, results show that with the same amine concentration takes N-isopropyl-1, 3-propanediamine approximately 18% C0 2 accommodates than the corresponding prior art detergent monoethanolamine. [0022] Surprisingly, it has now been found at equilibrium measurements under regeneration conditions (120 ° C) that N-isopropyl-1, 3-propanediamine solutions, in contrast to MEA solutions of C0 2 are almost completely regenerated. Thus, at 120 ° C and 10 mbar C0 2 partial pressure only a C0 2

Residual concentration of less than 0.2% by weight of C0 2 found in the solution. A 30 wt% of the MEA solution has in these conditions for a C0 2 residual concentration of approximately 2.5 wt%.

[0023] The cyclic absorbent capacity, which is determined as the difference in loading at 40 ° C and 120 ° C, therefore, is at equal weight proportions of the respective amine in water such as the 1, 5 times the cyclic absorption capacity of MEA.

[0024] In order for a solvent for the absorption of C0 2, in particular in the low C0 2 partial pressures is according to the invention before, which has a higher cyclic absorption capacity, than a comparable solvent prior art. This demonstrates the particular suitability for the C0 2 removal of the amine invention from industrial gases with low partial pressures (<200 mbar).

Claims

claims
1. Use of an absorbent for removing acidic gases from
a fluid stream comprising propanediamine an aqueous solution of N-isopropyl-1, 3, wherein the fluid stream with the absorbent at a
Partial pressure of <200 mbar is brought into contact, and wherein the
Absorbent based on the weight of the absorbent 40 to 65% of N-isopropyl-1, 3propandamin contains ..
2. The use of an absorbing agent according to any one of claims 1 or 2, wherein the absorbent contains at least one additional N-isopropyl-1, 3-propanediamine different amine.
3. Use of an absorbent according to claim 3, wherein the
Absorbent 5 to 45%, and preferably 10 to 40% of the includes at least one of N-isopropyl-1, 3-propanediamine different amine.
4. The use of an absorbing agent according to any one of claims 3 or 4, wherein the at least one additional N-isopropyl, 3-propanediamine various amine is chosen from:
A) tertiary amines of the general formula:
N (R1). 2 n (R2) n + 1
wherein R1 is an alkyl group and R2 represents a hydroxyalkyl group or
tertiary amines of the general formula:
(R1) 2 "(R2) n NXN (R1) 2-m (R2) m
wherein R1 is an alkyl group, R2 is a hydroxyalkyl group, X is an alkylene group that is interrupted several times once or by oxygen, and n and m represents an integer of 0 is to 2, or two groups bonded to different nitrogen atoms, R1 and R2 together for a
Alkylene group, ß) sterically hindered amines, C) 5-, 6-, or 7-membered saturated heterocycle having at least one NH group in the ring, one or two further heteroatoms selected may contain in the ring from nitrogen and oxygen,
D) primary or secondary Alkonolaminen,
E) alkylenediamines of the formula:
H 2 N-R2-NH 2
wherein R2 is a C 2 to C 6 -Alkygruppel.
Comprising amine 5. Use of a Absorptionsmiitels according to claim 5, wherein the tertiary amine is selected from the group consisting of bis-dimethylaminoethyl ether, tris (2-hydroxyethyl), tris (2-hydroxypropyl) amine, tributanolamine, bis (2-hydroxyethyl) methylamine , 2-diethylaminoethanol, 2-dimethylaminoethanol, 3-dimethylamino-1-propanol, 3-diethylamino-1-propanol, 2-diisopropylaminoethanol, N, N-bis (2-hydroxypropyl) methylamine
(Methyldiisopropanolamine, MDI PA), Ν, Ν, Ν ', Ν'-tetramethylethylenediamine, N, N-diethyl-N', N'-dimethylethylenediamine, N, Ν, Ν ', Ν'-tetraethylethylenediamine, N, N, N '.N'-Tetramethylpropandiamin.NNN'.N'-Tetraethylpropandiamin, N, N-dimethyl-N'.N'-diethylethylenediamine, 2- (2-dimethylaminoethoxy) -N, N- dimethylethanamine; 1, 4-diazabicyclo [2.2.2] octane (DABCO); Ν, Ν, Ν'- trimethylaminoethylethanolamine, N, N'-dimethylpiperazine and Ν, Ν'- bis (hydroxyethyl) piperazine.
6. The use of an absorbing agent according to claim 5, wherein the sterically
hindered amine selected from a group is selected, comprising 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1-butanol, 3-amino-3-methyl-1-butanol, 3-amino-3 - methyl-2-pentanol and 1-amino-2-methylpropan-2-ol.
7. Use of an absorbent according to claim 5, wherein the 5-, 6-, or 7-membered saturated heterocycles are selected from a group comprising, piperazine, 2-methylpiperazine, N-methylpiperazine, N-ethylpiperazine, N-aminoethylpiperazine, homopiperazine , piperidine and morpholine.
8. Use of an absorbent according to claim 5, wherein the primary or secondary alkanolamines are selected from a group comprising, N-bis 2-aminoethanol amine, N (2-hydroxyethyl), N, N-bis (2-hydroxy-propyl ) amine, 2- (methylamino) ethanol, 2- (ethylamino) ethanol, 2- (n-butylamino) ethanol, 2-amino-1-butanol, 3-amino-1-propanol and 5-amino-1-pentanol.
9. Use of an absorbent according to claim 5, wherein said alkyl diamines are selected from a group comprising, hexamethylenediamine, 1, 4- diaminobutane, 1, 3-diaminopropane, 2,2-Dimethyl1, 3-diaminopropane, 3- methylaminopropylamine, 3- (dimethylamino) propylamine, 3- (diethylamino) propylamine, 4-dimethylaminobutylamine, and 5- dimethylaminopentylamine, 1, 1, N, N-tetramethylethanediamine, 2,2, N, N-tetramethyl-1, 3-propanediamine, N, N ' dimethyl-1, 3-propanediamine, N, N'-bis (2-hydroxyethyl) ethylenediamine.
10. Use of an absorbent for removing carbon dioxide from a fluid stream according to any one of claims 1 to 12, wherein the loaded
Absorbent by
i) heating,
ii) expansion,
iii) stripping means by internal evaporation of the solvent
Strippdämpfen generated,
iv) stripping with an inert fluid
or a combination of two or all of these measures is regenerated.
PCT/EP2011/002825 2010-07-16 2011-06-09 Co2 removal from gases with low co2 partial pressures by means of n-isopropyl-1,3-propanediamine WO2012007084A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222157A1 (en) 2012-12-04 2014-06-05 Evonik Industries Ag A process for the absorption of CO2 from a gas mixture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3020965B1 (en) * 2014-05-16 2016-05-27 Ifp Energies Now absorbent solution basic tertiary diamines beta hydroxylated and method of removal of acid compounds from a gaseous effluent

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217236A (en) 1977-02-14 1980-08-12 Exxon Research & Engineering Co. Process and composition for removing carbon dioxide containing acidic gases from gaseous mixtures
US5700437A (en) 1993-10-06 1997-12-23 The Kansai Electric Power Co., Inc. Method for removing carbon dioxide from combustion exhaust gas
US6036931A (en) 1992-02-27 2000-03-14 The Kansai Electric Power Co., Inc. Method for removing carbon dioxide from combustion exhaust gas
WO2008145658A1 (en) 2007-05-29 2008-12-04 Basf Se Absorbent for removing acid gases which comprises a basic aminocarboxylic acid
US20090199713A1 (en) 2006-05-18 2009-08-13 Basf Se Carbon dioxide absorbent requiring less regeneration energy
US20100105551A1 (en) * 2008-10-28 2010-04-29 Korea Electric Power Corporation Absorbents for separating acidic gases

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217236A (en) 1977-02-14 1980-08-12 Exxon Research & Engineering Co. Process and composition for removing carbon dioxide containing acidic gases from gaseous mixtures
US6036931A (en) 1992-02-27 2000-03-14 The Kansai Electric Power Co., Inc. Method for removing carbon dioxide from combustion exhaust gas
US6500397B1 (en) 1992-02-27 2002-12-31 The Kansai Electrical Power Co., Inc. Method for removing carbon dioxide from combustion exhaust gas
US5700437A (en) 1993-10-06 1997-12-23 The Kansai Electric Power Co., Inc. Method for removing carbon dioxide from combustion exhaust gas
US20090199713A1 (en) 2006-05-18 2009-08-13 Basf Se Carbon dioxide absorbent requiring less regeneration energy
WO2008145658A1 (en) 2007-05-29 2008-12-04 Basf Se Absorbent for removing acid gases which comprises a basic aminocarboxylic acid
US20100105551A1 (en) * 2008-10-28 2010-04-29 Korea Electric Power Corporation Absorbents for separating acidic gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222157A1 (en) 2012-12-04 2014-06-05 Evonik Industries Ag A process for the absorption of CO2 from a gas mixture

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