EP2451558A1 - Procede de separation de co2 d ' un melange de gaz par des oxydes mixtes amorphes - Google Patents
Procede de separation de co2 d ' un melange de gaz par des oxydes mixtes amorphesInfo
- Publication number
- EP2451558A1 EP2451558A1 EP10734172A EP10734172A EP2451558A1 EP 2451558 A1 EP2451558 A1 EP 2451558A1 EP 10734172 A EP10734172 A EP 10734172A EP 10734172 A EP10734172 A EP 10734172A EP 2451558 A1 EP2451558 A1 EP 2451558A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- hdls
- mixed oxide
- resulting
- amorphous
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 58
- 102000015779 HDL Lipoproteins Human genes 0.000 claims abstract description 50
- 108010010234 HDL Lipoproteins Proteins 0.000 claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000008346 aqueous phase Substances 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 25
- 238000007669 thermal treatment Methods 0.000 claims description 14
- 125000000129 anionic group Chemical group 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 238000003486 chemical etching Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000007787 solid Substances 0.000 description 19
- 229910002092 carbon dioxide Inorganic materials 0.000 description 12
- 150000004679 hydroxides Chemical class 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 150000001450 anions Chemical class 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 7
- 150000001768 cations Chemical class 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- -1 carbonate anions Chemical class 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000008246 gaseous mixture Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 description 2
- 229960001545 hydrotalcite Drugs 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000320 mechanical mixture Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910001747 quintinite Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical class [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005906 dihydroxylation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
-
- 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
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
-
- 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 process for separating and / or purifying gas mixtures and more particularly to a process for capturing, separating and / or purifying carbon dioxide by amorphous mixed oxides resulting from the thermal treatment of double lamellar hydroxides .
- WO2007057570 dual lamellar hydroxides or mixed oxides known ⁇ amorphous resulting from a moderate heat treatment of HDLs that are either of natural origin or of synthesis suspended in an aqueous solution. It is known that these compounds, which have many similarities with anionic clays, have, like them: a structure in sheets, sheets loaded by isomorphic substitutions, exchangeable ions that compensate for charge deficits.
- the advantage over all the existing techniques is to allow a release of captured CO 2 by a minor modification of the conditions of pressure, temperature or partial pressure of CO 2 .
- the major disadvantage of these techniques is to use solids in the form of aqueous suspension which leads to the implementation of large volumes and thus lead to large industrial capture facilities.
- the double lamellar hydroxides, or HDLs which are of a relative rarity in nature can be manufactured by synthesis, as explained in the French patent application FR05 / 01948 filed by the applicant company.
- an aqueous phase synthesis of double lamellar hydroxide type compounds is carried out. from precursor elements, at least partially solid, and this by using as precursors elements to natural minerals or industrial by-products, by achieving at least partial solubilization of these precursor elements, so as to obtain solution of divalent and trivalent cations and performing a co-precipitation with a base of this cation solution.
- double lamellar hydroxide type compounds are directly related to their structure and their ability to integrate in this structure a multitude of divalent and trivalent cations, but also some cations monovalent (such as for example Li + ) and tetravalent (such as Sn 4+ ).
- the lamellar double hydroxides are also able to capture interlamellar intercalation by ion exchange, a wide variety of anions. Such properties are likely to find direct applications in the field of trapping by scavenging heavy metals such as lead, zinc, tin, and anions such as sulphates, arsenates, and chromates.
- US 6,315,973 also discloses a process for separating / purifying CO 2 from a gas mixture, comprising a step of contacting said gas with a previously activated HDL by incorporation of alkaline elements in the form of carbonates.
- the process described allows only a small amount of CO 2 to be captured (40 g of CO 2 / kg of HDL).
- the aim of the present invention is to propose a process for separating / purifying by means of amorphous mixed oxides resulting from the thermal treatment of double lamellar hydroxides of gas.
- the basic principle of the process according to the invention makes use of a phenomenon of trapping the CO 2 gas by the solid in the form of carbonate anions.
- the method according to the invention is intended in particular to allow the separation and the capture of the CO2 contained in a gas mixture by using the ability of the amorphous mixed oxides resulting from the thermal decomposition of HDLs to allow the recrystallization of a phase of Double Lamellar Hydroxide (HDL) type incorporating carbonate anions in its interlamellar space.
- the method according to the invention makes it possible to capture gas quantities greater than those of the processes, using a known amorphous mixed oxide resulting from a moderate heat treatment of HDLs, previously described.
- the process according to the invention differs from the processes previously described in that it uses either a water supply by the gas phase to be treated, or a supply of water in liquid form but in proportions such that it does not generate at any time an apparent aqueous phase.
- the water molecules thus added will firstly allow the transfer of CO2 to the solid and consequently the regeneration of the HDL structure. Most of the water thus added is mobilized to regenerate the hydroxylated structure of HDLs, as written in the equation below:
- the solid After capturing CO 2 , the solid can be regenerated for repeated use and the trapped gas can be released to obtain a purified gas stream.
- the regeneration of the solid can be obtained by heat treatment at a moderate temperature (100 to 500 ° C. depending on the nature of the HDL) in order to lead to the formation of amorphous mixed oxides suitable for reuse for a new CO capture / release cycle. 2 .
- the method according to the invention has the advantage, compared to the processes of the prior art, to allow the construction of industrial structures of modest size and low energy consumption.
- the present invention relates to a method for separating / purifying a mixture (M) of gas, comprising the step of bringing said gas mixture into contact with a known amorphous mixed oxide resulting from a moderate heat treatment of the HDLs having a affinity for one of the gases present in said mixture, characterized in that the mixed oxide ponderedly amorphous resulting from a moderate thermal treatment of HDLs, is not in contact with an apparent aqueous phase.
- the term "mixed oxide deemed amorphous resulting from a moderate thermal treatment of HDLs” refers to the oxides resulting from the dehydroxylation / decarbonation of the double Lamellar hydroxides by treatment at temperatures between 100 0 C and 500 ° C. According to a preferred embodiment of the invention, said treatment at temperatures between 100 0 C and 500 0 C is carried out for at least 30 min, even more preferably for at least one hour and so quite preferred for at least 1 hour and 30 min.
- the term "without apparent aqueous phase” means that the amount of water (by mass) possibly in contact with the known amorphous mixed oxide resulting from a moderate heat treatment of HDLs, is less than 50 % of the total mass Solid / liquid and preferably between 30 and 35% of the total amount (by weight) of said mixed oxide deemed amorphous, resulting from a moderate thermal treatment of HDLs, and water.
- the process according to the invention will preferably comprise an additional step consisting in treating by thermal means the known amorphous mixed oxide resulting from a moderate thermal treatment of the HDLs that has been in contact with the gas to be separated / purified in order to release the gas stored in it.
- thermal means the known amorphous mixed oxide resulting from a moderate thermal treatment of the HDLs that has been in contact with the gas to be separated / purified.
- chemical means that attack the known amorphous mixed oxide resulting from a moderate thermal treatment of the HDLs that has been in contact with the gas to be separated / purified, so as to break its structure or suitable means. to make a move anionic.
- the process may then comprise a step of reconstituting it, in particular constituted by a treatment in a basic medium or a separation process. solid / liquid.
- the process may comprise steps consisting in carrying out the capture of at least two gases and in treating the known amorphous mixed oxide resulting from a moderate thermal treatment of the HDLs that has been in contact with the gases to be separated / purified. in order to selectively release at least one gas.
- said HDL is not activated by an alkali metal before undergoing a moderate heat treatment.
- alkali metal refers to K 2 CO 3 , Li 2 CO 3 , Na 2 CO 3 , MgO, CaO, SrO, BaO and ZnO.
- said HDL is selected from the group consisting of hydrotalcite, quintinite, pyroaurite, reevesite, takovite / or in the group comprising HDLs consisting of Mg 2+ , Zn cations. 2+ , Ni 2+ , Al 3+ and Fe 3 .
- the gas to be captured is CO 2 and the known amorphous mixed oxide resulting from a moderate heat treatment of HDLs is a mixed oxide deemed amorphous resulting from a moderate heat treatment of HDLs having an affinity for CO 3 "2
- said HDL is selected from the group consisting of hydrotalcite, quintinite, pyroaurite / or in the group comprising HDLs consisting of Mg 2+ , Al 3+ and Fe 3+ cations.
- a selection can also be made by varying the affinity difference for the known amorphous mixed oxide resulting from a moderate heat treatment of HDLs.
- This anionic selectivity can be modulated according to the cationic composition of the known amorphous mixed oxide resulting from a moderate thermal treatment of HDLs.
- a selection can be made at the end of the process by selectively controlling the release of the species captured during the regeneration of the known amorphous mixed oxide resulting from a moderate heat treatment of the HDLs that have been in contact. with the gas to be separated / purified.
- extraction and the purification of a particular gas belonging to the gas mixture M can be carried out in two main ways ie by trapping in the mixed oxide deemed amorphous resulting from a moderate heat treatment of the HDLs the gas which is to be extracted from the mixing and then liberating it, optionally selectively, or, conversely, by trapping the undesirable gas species in the so-called amorphous mixed oxide resulting from a moderate heat treatment of the HDLs, leaving then the gas that the we want to extract in the released state.
- capture CO2 regardless of the water content of the mixture, is total, then follows a decay period of the capture phenomenon that leads to the rise in the CO 2 content in the gas mixture until the value initially introduced.
- the return kneading brings about a cooling of the solid surfaces in contact with the gaseous mixture and thus a reactivation of the capture phenomena which leads to a fall in the concentration of CO 2 in the gaseous mixture analyzed downstream of the capture device.
- Characterization by X-ray diffraction of the solids used in the tests conducted with water contents of 33, 35 and 50% shows the complete restructuring of amorphous mixed oxides in double lamellar hydroxide which confirms a rate of capture of CO 2 in the form of anionic neighbor of the total anionic capacity.
- the capture selectivity can be supplemented by a release selectivity that has been demonstrated by ThermoGravimetric Analysis (ATG). Indeed, the heat treatment of samples which contained bicarbonate anions and sulphate anions shows that they leave the solid at a temperature of 600 0 C while the bicarbonates have left the solid at a temperature below 550 0 C. It is therefore possible to supplement the selectivity observed during the capture phase by a complementary selectivity during the release phase.
- ATG ThermoGravimetric Analysis
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0902940A FR2946893B1 (fr) | 2009-06-17 | 2009-06-17 | Procede de capture,separation et purification de gaz par des oxydes mixtes amorphes. |
| PCT/FR2010/000449 WO2010149871A1 (fr) | 2009-06-17 | 2010-06-17 | Procede de separation de co2 d ' un melange de gaz par des oxydes mixtes amorphes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2451558A1 true EP2451558A1 (fr) | 2012-05-16 |
Family
ID=41529586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10734172A Ceased EP2451558A1 (fr) | 2009-06-17 | 2010-06-17 | Procede de separation de co2 d ' un melange de gaz par des oxydes mixtes amorphes |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2451558A1 (fr) |
| FR (1) | FR2946893B1 (fr) |
| WO (1) | WO2010149871A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0518379A3 (en) * | 1991-06-13 | 1993-06-30 | Kalkwerke H. Oetelshofen Gmbh & Co. | Process for the removal of organic and inorganic toxic products from gaseous liquid and/or solid materials |
| US6303092B1 (en) * | 1995-04-10 | 2001-10-16 | Air Products And Chemicals, Inc. | Process for operating equilibrium controlled reactions |
| WO2004000440A1 (fr) * | 2002-06-19 | 2003-12-31 | Georgia Tech Research Corporation | Adsorbants, ainsi que procedes de preparation et procedes d'utilisation de ces adsorbants |
| FR2893516B1 (fr) | 2005-11-18 | 2008-01-11 | Rech S Geol Et Minieres Brgmet | Procede de separation/purification d'un melange de gaz |
| FR2911517B1 (fr) * | 2007-01-24 | 2009-12-18 | Rech S Geol Et Minieres Brgm B | Procede de separation de co2 gazeux contenu dans un melange de gaz. |
-
2009
- 2009-06-17 FR FR0902940A patent/FR2946893B1/fr active Active
-
2010
- 2010-06-17 EP EP10734172A patent/EP2451558A1/fr not_active Ceased
- 2010-06-17 WO PCT/FR2010/000449 patent/WO2010149871A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010149871A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2946893B1 (fr) | 2014-05-23 |
| FR2946893A1 (fr) | 2010-12-24 |
| WO2010149871A1 (fr) | 2010-12-29 |
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