WO2013164751A2 - Method for the reduction of the regeneration energy of carbon dioxide loaded solvents - Google Patents

Method for the reduction of the regeneration energy of carbon dioxide loaded solvents Download PDF

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Publication number
WO2013164751A2
WO2013164751A2 PCT/IB2013/053373 IB2013053373W WO2013164751A2 WO 2013164751 A2 WO2013164751 A2 WO 2013164751A2 IB 2013053373 W IB2013053373 W IB 2013053373W WO 2013164751 A2 WO2013164751 A2 WO 2013164751A2
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WO
WIPO (PCT)
Prior art keywords
water
solvent solution
aqueous solvent
reducing
organic compound
Prior art date
Application number
PCT/IB2013/053373
Other languages
French (fr)
Other versions
WO2013164751A3 (en
Inventor
Geert Frederic Versteeg
Glenn Rexwinkel
Nick Antonius Maria Ten ASBROEK
Patrick Johannes Gerhardus HUTTENHUIS
R. Arendsen
Original Assignee
Procede Holding Bv
Gerntholtz, Otto, Carl
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 Procede Holding Bv, Gerntholtz, Otto, Carl filed Critical Procede Holding Bv
Publication of WO2013164751A2 publication Critical patent/WO2013164751A2/en
Publication of WO2013164751A3 publication Critical patent/WO2013164751A3/en

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    • 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
    • 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
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • 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
    • B01D2252/10—Inorganic absorbents
    • B01D2252/103—Water
    • 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
    • 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
    • B01D2252/202—Alcohols or their derivatives
    • B01D2252/2023—Glycols, diols or their derivatives
    • 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
    • B01D2252/202—Alcohols or their derivatives
    • B01D2252/2023—Glycols, diols or their derivatives
    • B01D2252/2026—Polyethylene glycol, ethers or esters thereof, e.g. Selexol
    • 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
    • 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
    • B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
    • B01D2252/2056—Sulfur compounds, e.g. Sulfolane, thiols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/304—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/306—Organic sulfur compounds, e.g. mercaptans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/308—Carbonoxysulfide COS
    • 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
    • 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

Definitions

  • the present invention relates to a method for the reduction of the regeneration energy of carbon dioxide loaded solvents.
  • the present invention relates to a method for the reduction of the regeneration energy of carbon dioxide loaded solvents by partly replacing water with an organic compound in the solvent.
  • C0 2 from industrial gases e.g. flue gas, natural gas and biogas respectively
  • a solvent that contains a compound that reacts with the C0 2 These solvents are frequently aqueous solutions of alkanol / amines, aqueous solutions of carbonates / bicarbonates or amino acids. More generally it can be stated that these solvents are aqueous solutions with one or more basic compounds.
  • the absorption solvent, loaded with C0 2 is usually regenerated in a so-called stripper in which the temperature is increased.
  • the conditions are such that the solvent is close to its boiling point and the reverse reaction of the C0 2 absorber takes place. In this way C0 2 is produced in the gas phase.
  • a vast amount of water is evaporated (usually the added basic compound has a substantially higher boiling point and its concentration in the stripper outlet gas is negligible) that is condensed and fed back to the stripper in order to maintain the water balance.
  • a method for the reduction of the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
  • a method for the removal of C0 2 from industrial gases includes the step of reducing the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution by reducing the amount of water to be evaporated from the aqueous solvent solution.
  • a method for the reduction of the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution includes the step of replacing water with an organic compound in the solvent.
  • an acid gas treatment process includes the step of reducing of the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution by replacing water with an organic compound in the solvent
  • the amount of water to be replaced by the organic compound may be optimized for each process.
  • the step of reducing the amount of water to be evaporated may include the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
  • the step of reducing the vapour pressure may be realized by reducing the water content of the aqueous solvent solution.
  • the molar fraction of the water in the aqueous solvent solution may become smaller and therefore the corresponding vapour pressure may also become smaller.
  • the water content of the aqueous solvent solution may be reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C0 2 and which has a substantially higher boiling point than water.
  • the water soluble organic compound may be at least one compound selected from the group consisting of
  • the invention also extends to and is applicable in acid gas treating processes.
  • the acid gas treatment process may include the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide, mercaptans, etc.
  • the method for the reduction of the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
  • the step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
  • the step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
  • the water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C0 2 and which has a substantially higher boiling point than water.
  • the water soluble organic compound is at least one compound selected from the group consisting of
  • the invention also extends to a method for the removal of C0 2 from industrial gases which includes the step of reducing the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution by reducing the amount of water to be evaporated from the aqueous solvent solution.
  • the invention thus provides techniques to reduce the amount of water evaporated or to integrate the produced water vapor in the regeneration process and prevent it from condensation. In this way the energy consumption of the regeneration process is reduced.
  • the invention also extends to and is applicable in acid gas treating processes includes the step of reducing of the regeneration energy of C0 2 loaded solvents in an aqueous solvent solution by replacing water with an organic compound in the solvent.
  • the acid gas treatment process may include the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide, mercaptans, etc.

Abstract

The invention discloses a method for the reduction of the regeneration energy of CO2 loaded solvents in an aqueous solvent solution includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution. The method may include the step of replacing water with an organic compound in the solvent. The invention also extends to a method for the removal of CO2 from industrial gases includes the step of reducing the regeneration energy of CO2 loaded solvents in an aqueous solvent solution by reducing the amount of water to be evaporated from the aqueous solvent solution. The method may be utilised in an acid gas treatment process.

Description

METHOD FOR THE REDUCTION OF THE REGENERATION ENERGY
OF CARBON DIOXIDE LOADED SOLVENTS
FIELD OF INVENTION
The present invention relates to a method for the reduction of the regeneration energy of carbon dioxide loaded solvents.
More particularly, the present invention relates to a method for the reduction of the regeneration energy of carbon dioxide loaded solvents by partly replacing water with an organic compound in the solvent.
BACKGROUND TO INVENTION
The removal of C02 from industrial gases, e.g. flue gas, natural gas and biogas respectively, is usually carried out via the absorption of the C02 in a solvent that contains a compound that reacts with the C02. These solvents are frequently aqueous solutions of alkanol / amines, aqueous solutions of carbonates / bicarbonates or amino acids. More generally it can be stated that these solvents are aqueous solutions with one or more basic compounds.
The absorption solvent, loaded with C02, is usually regenerated in a so-called stripper in which the temperature is increased. In the stripper the conditions are such that the solvent is close to its boiling point and the reverse reaction of the C02 absorber takes place. In this way C02 is produced in the gas phase. Owing to the high temperatures a vast amount of water is evaporated (usually the added basic compound has a substantially higher boiling point and its concentration in the stripper outlet gas is negligible) that is condensed and fed back to the stripper in order to maintain the water balance.
In principle the minimum net energy required in these C02 capture processes would be equal to the heat of the chemical reaction but this is more a theoretical asymptotic number. However, one can state that basic compounds with a lower heat of reaction (or absorption) usually show a somewhat more favorable total heat of regeneration. As mentioned above vast amounts of water are also evaporated in the stripper and subsequently condensed again. This continuous cycle of evaporation and condensation of water increases substantially the energy consumption of the regeneration process.
It is an object of the invention to suggest a method for the reduction of the regeneration energy of C02 loaded solvents. SUMMARY OF INVENTION
According to the invention, a method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
Also according to the invention, a method for the removal of C02 from industrial gases includes the step of reducing the regeneration energy of C02 loaded solvents in an aqueous solvent solution by reducing the amount of water to be evaporated from the aqueous solvent solution.
Yet further according to the invention, a method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution includes the step of replacing water with an organic compound in the solvent.
Yet further according to the invention, an acid gas treatment process includes the step of reducing of the regeneration energy of C02 loaded solvents in an aqueous solvent solution by replacing water with an organic compound in the solvent
The amount of water to be replaced by the organic compound may be optimized for each process.
The step of reducing the amount of water to be evaporated may include the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
The step of reducing the vapour pressure may be realized by reducing the water content of the aqueous solvent solution. The molar fraction of the water in the aqueous solvent solution may become smaller and therefore the corresponding vapour pressure may also become smaller.
The water content of the aqueous solvent solution may be reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
The water soluble organic compound may be at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
The invention also extends to and is applicable in acid gas treating processes.
The acid gas treatment process may include the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide, mercaptans, etc.
DETAILED DESCRIPTION OF INVENTION
A method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution in accordance with the invention is now described by way of example.
The method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
Water is replaced with an organic compound in the solvent. The amount of water to be replaced by the organic compound should be optimized for each process. The step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
The step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
The molar fraction of the water in the aqueous solvent solution becomes smaller and therefore the corresponding vapour pressure also becomes lower.
The water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
The water soluble organic compound is at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
The invention also extends to a method for the removal of C02 from industrial gases which includes the step of reducing the regeneration energy of C02 loaded solvents in an aqueous solvent solution by reducing the amount of water to be evaporated from the aqueous solvent solution.
The invention thus provides techniques to reduce the amount of water evaporated or to integrate the produced water vapor in the regeneration process and prevent it from condensation. In this way the energy consumption of the regeneration process is reduced. The invention also extends to and is applicable in acid gas treating processes includes the step of reducing of the regeneration energy of C02 loaded solvents in an aqueous solvent solution by replacing water with an organic compound in the solvent.
The acid gas treatment process may include the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide, mercaptans, etc.

Claims

PATENT CLAIMS 1. A method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution, includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
2. A method as claimed in claim 1, which includes the step of replacing water with an organic compound in the solvent solution.
3. A method as claimed in claim 2, in which the amount of water to be replaced by the organic compound is optimized for each process.
4. A method as claimed in any one of the preceding claims, in which the step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
5. A method as claimed in claim 4, in which the step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
6. A method as claimed in any one of the preceding claims, in which the molar fraction of the water in the aqueous solvent solution becomes smaller and therefore the corresponding vapour pressure also becomes smaller.
7. A method as claimed in any one of the preceding claims, in which the water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
8. A method as claimed in any one of claims 2 to 7, in which the water soluble organic compound is at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
9. A method as claimed in any one of the preceding claims, which is performed in an acid gas treating process.
10. A method as claimed in claim 9, in which the acid gas treatment process includes the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide and/or mercaptans.
11. A method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution, which includes the step of replacing water with an organic compound in the solvent solution.
12. A method as claimed in claim 11, which includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
13. A method as claimed in claim 12, in which the amount of water to be replaced by the organic compound is optimized for each process.
14. A method as claimed in any one of claims 11 to 13, in which the step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
15. A method as claimed in claim 14, in which the step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
16. A method as claimed in any one of claims 11 to 15, in which the molar fraction of the water in the aqueous solvent solution becomes smaller and therefore the corresponding vapour pressure also becomes smaller.
17. A method as claimed in any one of claims 11 to 16, in which the water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
18. A method as claimed in any one of claims 12 to 17, in which the water soluble organic compound is at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
19. A method as claimed in any one of claims 11 to 18, which is performed in an acid gas treating process.
20. A method as claimed in claim 19, in which the acid gas treatment process includes the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide and/or mercaptans.
21. A method for the removal of C02 from industrial gases includes the step of reducing the regeneration energy of C02 loaded solvents in an aqueous solvent solution, which includes the step of replacing water with an organic compound in the solvent solution.
22. A method as claimed in claim 21, which includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
23. A method as claimed in claim 22, in which the amount of water to be replaced by the organic compound is optimized for each process.
24. A method as claimed in any one of claims 21 to 23, in which the step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
25. A method as claimed in claim 24, in which the step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
26. A method as claimed in any one of claims 21 to 25, in which the molar fraction of the water in the aqueous solvent solution becomes smaller and therefore the corresponding vapour pressure also becomes smaller.
27. A method as claimed in any one of claims 21 to 26, in which the water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
28. A method as claimed in any one of claims 22 to 27, in which the water soluble organic compound is at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
29. A method as claimed in any one of claims 21 to 28, which is performed in an acid gas treating process.
30. A method as claimed in claim 29, in which the acid gas treatment process includes the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide and/or mercaptans.
31. A method for the removal of C02 from industrial gases includes the step of reducing the regeneration energy of C02 loaded solvents in an aqueous solvent solution, which includes the step of reducing the amount of water to be evaporated from the aqueous solvent solution.
32. A method as claimed in claim 31, which includes the step of replacing water with an organic compound in the solvent solution.
33. A method as claimed in claim 32, in which the amount of water to be replaced by the organic compound is optimized for each process.
34. A method as claimed in any one of claims 31 to 33, in which the step of reducing the amount of water to be evaporated includes the step of reducing the vapour pressure of the water (as function of the temperature) of the aqueous solvent solution.
35. A method as claimed in claim 34, in which the step of reducing the vapour pressure is realized by reducing the water content of the aqueous solvent solution.
36. A method as claimed in any one of claims 31 to 35, in which the molar fraction of the water in the aqueous solvent solution becomes smaller and therefore the corresponding vapour pressure also becomes smaller.
37. A method as claimed in any one of claims 31 to 36, in which the water content of the aqueous solvent solution is reduced by adding to the aqueous solvent solution a water soluble organic compound which is non-reactive to C02 and which has a substantially higher boiling point than water.
38. A method as claimed in any one of claims 32 to 37, in which the water soluble organic compound is at least one compound selected from the group consisting of
(a) Sulfolane;
(b) NMP;
(c) Glycerol;
(d) Glycol;
(e) Sugar;
(f) Pentanol;
(g) polyethylene glycol.
39. A method as claimed in any one of claims 31 to 38, which is performed in an acid gas treating process.
40. A method as claimed in claim 39, in which the acid gas treatment process includes the removal of hydrogen sulphide, carbon dioxide, carbonyl sulphide and/or mercaptans.
41. An acid gas treatment process, which includes the step of reducing of the regeneration energy of C02 loaded solvents in an aqueous solvent solution by replacing water with an organic compound in the solvent.
42. A method for the reduction of the regeneration energy of C02 loaded solvents in an aqueous solvent solution substantially as hereinbefore described.
43. A method for the removal of C02 from industrial gases substantially as hereinbefore described.
44. An acid gas treatment process substantially as hereinbefore described.
PCT/IB2013/053373 2012-05-01 2013-04-29 Method for the reduction of the regeneration energy of carbon dioxide loaded solvents WO2013164751A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2012/01544 2012-05-01
ZA201201544 2012-05-01

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WO2013164751A2 true WO2013164751A2 (en) 2013-11-07
WO2013164751A3 WO2013164751A3 (en) 2014-01-23

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070148068A1 (en) * 2005-12-23 2007-06-28 Burgers Kenneth L Reclaiming amines in carbon dioxide recovery

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070148068A1 (en) * 2005-12-23 2007-06-28 Burgers Kenneth L Reclaiming amines in carbon dioxide recovery

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