EP2717994A1 - Procédé d'adsorption à pression alternée - Google Patents

Procédé d'adsorption à pression alternée

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Publication number
EP2717994A1
EP2717994A1 EP12725726.9A EP12725726A EP2717994A1 EP 2717994 A1 EP2717994 A1 EP 2717994A1 EP 12725726 A EP12725726 A EP 12725726A EP 2717994 A1 EP2717994 A1 EP 2717994A1
Authority
EP
European Patent Office
Prior art keywords
component
zeolite
gaseous mixture
composite material
weight
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Withdrawn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
EP12725726.9A
Other languages
German (de)
English (en)
Inventor
Achim Koch
Michael Zavrel
Christoph Kröhnke
Ulrich Kettling
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.)
Clariant Produkte Deutschland GmbH
Original Assignee
Clariant Produkte Deutschland GmbH
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 Clariant Produkte Deutschland GmbH filed Critical Clariant Produkte Deutschland GmbH
Priority to EP12725726.9A priority Critical patent/EP2717994A1/fr
Publication of EP2717994A1 publication Critical patent/EP2717994A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B01D53/02—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
    • B01D53/04—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 with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • 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
    • B01D53/04—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 with stationary adsorbents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • 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
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • 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
    • B01D2253/20—Organic adsorbents
    • B01D2253/202—Polymeric adsorbents
    • 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
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

Definitions

  • the invention relates to a method for enrichment of at least one component from a fluid
  • the zeolites are usually applied to carriers.
  • Suitable binders are inert solids or polymers which, together with the
  • Zeolites give sorptive composite materials.
  • PTFE Polytetrafluoroethylene
  • PTFE is particularly suitable as a matrix polymer because it is fibrillatable, thermally stable, chemically inert and hydrophobic, ie it can be processed into stable and highly flexible nonwoven fabrics, usable in the working temperature range of -250 to + 260 ° C, absorbs neither water nor is it soluble;
  • PTFE is largely inert to acids and alkalis.
  • PTFE is partially crystalline and above the
  • Phase transition temperature of 19 ° C fibrillierbar i.
  • the incorporated solvent is typically removed by heating, thereby providing an additional defined degree
  • Adsorption methods such as the so-called solid phase extraction (SPE) or drying method.
  • Solid phase extraction means the physical separation process between a fluid and a solid phase, wherein the component to be isolated or analyzed is dissolved in a liquid or gaseous solvent.
  • the SPE finds application in analytical or preparative chromatography (e.g., high performance liquid chromatography, HPLC, or gas chromatography, GC).
  • beds of adsorption materials are used for drying processes, which adsorb water as the fluid flows through the bed.
  • the most well-known example is the absolute ist of ethanol with the help of the hydrophilic zeolites 3A, 4A, 5A or 13X. From EP 0 773 829 it is known that also organic
  • Components from a fluid so from a liquid or a gas can be adsorbed.
  • the adsorbed components can be displaced by other components.
  • this method has the disadvantage that after desorption the adsorbent with the components used for displacement is loaded and therefore further steps are necessary to remove them.
  • the temperature of the adsorbent can be increased until the adsorbed components thermally
  • Wall surface to volume ratio is always lower and thus less favorable.
  • the heating of the adsorbent via, for example, hot purge gas is due to the low heat capacity of gases associated with very large flow rates of purge gas.
  • TSA Temperature Swing Adsorption
  • the third possibility is the so-called pressure-swing adsorption (PSA), in which the adsorbed components are desorbed by lowering the pressure.
  • PSA pressure-swing adsorption
  • Short cycle times make it possible to reduce the required amount of adsorbent so that the adsorber columns can be dimensioned significantly smaller. This not only reduces the cost of the adsorbents and the investment cost of the columns, but also reduces the operating costs of the adsorption, as shorter adsorber also cause lower pressure losses when flowing through the gaseous mixture through the Adsorbens marsung, which must be overcome by pumps or compressors.
  • Adsorbent is subjected to frequent pressure changes leads to a mechanical stress of the adsorbent.
  • the adsorbent is a bed of solid particles which rub each other with each pressure change to cause abrasion.
  • Voids formed in adsorbent can at
  • Adsorbermaterials are connected to reduce. But any extension of the adsorption phase and / or the
  • Desorption phase requires larger amounts of adsorbent, so that the cost efficiency of the process is impaired.
  • an optimal PSA process should use an adsorbent that has low pressure drops and short cycle times
  • the composite material consisting of
  • (D) optionally at least one further component, wherein the amount of the metallic material c) 0 to 90% by weight based on the sum of the weight of all components, the ratio of the weight of component a) to the sum of the weight of components b ) and d) is 2:98 to 25:75, and the ratio of the weight of component b) to
  • Weight of component d) is 80:20 to 100: 0;
  • Mixture is formed, and diverting the second gaseous mixture of the composite material.
  • a first gas mixture is passed over a composite material containing a zeolite as an adsorber at a pressure pl.
  • the composite material comprises a fluorine-containing
  • fibrillatable polymer preferably PTFE, and a zeolite suitable for the adsorption of small molecules.
  • Stiffening of the material can be metal in the form of
  • the fluorine-containing polymer is fibrillatable and can form a porous matrix by fibrillation.
  • the fluorine-containing polymer is also chemically inert and non-swellable in the presence of water or organic molecules.
  • the fluorine-containing polymer comprises a proportion of
  • Tetrafluoroethylene monomer units of at least 99 mol% Tetrafluoroethylene monomer units of at least 99 mol%.
  • PTFE Polytetrafluoroethylene
  • tetrafluoroethylene-hexafluoropropylene copolymer tetrafluoroethylene-chlorotrifluoroethylene copolymer
  • tetrafluoroethylene-perfluoro (2, 2-dimethyl-1,3-dioxole) copolymer tetrafluoroethylene-perfluoro (C 1-6 -alkyl vinyl ether) copolymer
  • C 1-6 -alkyl vinyl ether tetrafluoroethylene
  • Tetrafluoroethylene-perfluoro (butenyl vinyl ether) copolymer Tetrafluoroethylene-perfluoro (butenyl vinyl ether) copolymer. PTFE is preferred.
  • the polymer can be used as a powder or dispersion.
  • Surfactant-free PTFE powders are preferably used because the absence of surface-active
  • the molecules of gaseous mixtures can selectively absorb and desorb again under suitable conditions. Suitable for this are in particular
  • sorbents which are suitable for sorbing organic polar molecules from water-containing fluids and desorbing them again under suitable conditions are also interesting for the composite material
  • hydrophobic zeolites ie zeolites having a SiO 2 : Al 2 O 3 ratio of 100: 1 or more, preferably 200: 1 or more, more preferably 500: 1 or more. These zeolites are for the adsorption of organic molecules like
  • Alcohols e.g., ethanol, butanol
  • ethers e.g., benzyl alcohols
  • ketones e.g.
  • Acetone e.g., acetone
  • aldehydes e.g., acetaldehyde
  • esters e.g.
  • X-ray fluorescence spectroscopy of a dried at 100 ° C for one hour sample, which is then pressed with a binder into a tablet, by determining the molar ratio of Si: Al, the molar
  • Ratio SiO 2 : ⁇ l 2 O 3 is converted.
  • the zeolites should have a large surface determined by the BET method per unit weight.
  • Zeolites suitable for the present invention have a surface according to the BET method of 150 m 2 / g or greater, preferably 200 m 2 / g or greater, more preferably 300 m 2 / g or greater. The surface comes with a fully automatic
  • Nitrogen dosed into the sample chambers By detecting the adsorbed amount of gas as a function of pressure, an adsorption isotherm is determined at a constant temperature. In a pressure equalization, the analysis gas is gradually removed and a desorption isotherm is recorded.
  • Zeolite Y USY zeolite
  • ERI zeolite erionite
  • zeolite particles of particle size (d 50 ) of 0.5 to 100 microns, more preferably from 1 to 50 microns and more preferably from 5 to 25 microns are used.
  • Particle size is increasingly difficult and expensive, it would not be advantageous to choose very small particle sizes, although this is possible in principle.
  • a single type of zeolite or a mixture of several zeolite types may be used. The only one
  • Zeolite type or zeolite types can be used in one
  • the composite material may be a metallic material
  • metallic materials i. pure metals and alloys.
  • metallic materials are suitable in
  • Presence of water and organic molecules are chemically inert, i. do not or only partially react with water and / or organic compounds. Limited reacting with water and / or organic compounds means
  • corrosion-free metals particularly preferably stainless steels, which are used in the
  • X12CrNil77 WNr 1.4310
  • X5CrNi1810 WNr 1.4301
  • the shape in which the metallic material is present in the composite material is not limited.
  • the metallic material in a flat form i. for example in the form of metal meshes,
  • Metal plates or sheets, or in particulate form i.
  • Composite material are present, i. both in particulate form and in sheet form.
  • a mesh size or hole opening of 0.5-5 mm, in particular of 1-2 mm is preferred.
  • the number and distribution of holes per unit area is not very special
  • the thickness of the metallic material in the applied sheet form is not
  • the thickness of the metallic material is usually 0.1-1 mm, preferably 0.2-0.5 mm, particularly preferably 0.25 mm.
  • the amount of the optional metallic material (c) is 0 to 90% by weight based on the sum of all of the components of
  • Composite material i. the metallic material is an optional component.
  • the amount of the metallic material (c) is more than 0 wt .-%, but not more than 90 wt .-%, based on the sum of all components of the composite material.
  • the amount of the metallic material c) is 5 to 80 wt .-%, more preferably 10 to 70 wt .-%, based on the sum of all components of the composite material. (d) Other component
  • the composite material of the invention may optionally be present one or more components, for example, excipients, surfactants, lubricants,
  • Precipitated silica silica, activated carbon, pigments,
  • Glass fibers or fibers, plastic fibers, fibers of natural origin, clay minerals such as bentonite can be selected.
  • the fluorine-containing polymer (a) is in a ratio to the total weight of the zeolite particles (b) and the optional further component (d) from 2:98 to 30:70, preferably from 4:96 to 20:80, more preferably from 5:95 to 15:85.
  • the ratio of the weight of zeolite particles (b) to the weight of component (d) is 80:20 to 100: 0, i. the component (d) is optional. This is preferably
  • Ratio of the weight of zeolite particles (b) to the weight of component (d) 90:10 to 100: 0, more preferably 95: 5 to 100: 0.
  • the ratio of the weight of the fluorine-containing polymer (a) to the total weight of the zeolite particles (b) and optional further component (d) is in the range of 4:96 to 20:80, more preferably 5:95 to 15:85, wherein the ratio of the weight of the zeolite particles (b) to the weight of component (d) is from 90:10 to 100: 0.
  • the composite material is obtained by mixing the components (a) and (b) and the optional metallic material (c), if the metallic material (c) is used in a suitable small-particle form, for example in powder form, in the abovementioned amounts and followed by kneading, with shearing resulting in fibrillation of the polymer and incorporation of the zeolite into the porous polymer matrix [Figure 1].
  • the kneading is carried out at room temperature or preferably at an elevated temperature such as 30 ° C or more, 50 ° C or more or 70 ° C or more, because at a temperature in these ranges usually better processability and in particular better fibrillation the fluorine-containing polymer is possible.
  • the upper temperature limit is primarily due to thermal stability of the mixture
  • processing at a temperature of not more than 200 ° C is preferable, more preferably not more than 150 ° C.
  • polymer (a) and zeolite (b) are preferably used in powder form.
  • the polymer (a) can also be used, for example, in the form of a commercial dispersion in water. Such commercial
  • Dispersions may contain adjuvants such as stabilizers, surfactants or other surface tension modifying components and / or other adjuvants. To facilitate the mixing and shearing process, as
  • Lubricant may be added to water or alcohol. In order to be able to dispense with an energy-intensive and cost-intensive drying step later, it is preferred to work with as little liquid as possible, that is to say with a minimum of liquid. no lubricant is added except for the amount of liquid added via the PTFE dispersion (maximum 40% of the dispersion).
  • the dough-like to non-woven product between heated rollers (temperature 60-150 ° C) biaxially rolled in several steps first to a mat, then to a film, wherein the fibrillation optimized and
  • a homogeneous final layer thickness of 0.3 to 1 mm, preferably 0.4-0.6 mm is set.
  • Suitable for this step is a heatable calendering or rolling system of at least 2 rolls, preferably 4 rolls or more.
  • Composite material of a polymer (a) and a zeolite (b) is also described in EP 0 773 829 B1 and documents cited therein. If a metallic material is to be introduced in a flat form, the material thus obtained is in one or more steps between pressure-loaded rollers in a laminator or calender so with the metallic material in a flat form, e.g. Stainless steel mesh,
  • a layer of the metallic material is sandwiched between two layers of the material.
  • the step of bonding the metallic material and the material may be at room temperature, but advantageously at 70-250 ° C to drive off residual moisture, the
  • Lubricant may be present in the material when mixing and / or kneading fluorine-containing polymer (a) and zeolite particles (b) as described above. Optionally closes
  • one or more heating elements are introduced into the material so that the heat energy from the heating element to the metallic material can be well transferred.
  • Metallic material may possibly even have the function of
  • the composite material can be used in any form.
  • the first gaseous mixture contains at least one component to be enriched.
  • This component may be organic or non-organic and enriched for other components that are organic or non-organic.
  • the at least one component to be enriched is an organic substance, for example, one of the classes of substances alcohols (e.g., ethanol, butanol), ethers (e.g., methyl tert-butyl ether or tetrahydrofuran), ketones (e.g., acetone), aldehydes (e.g.
  • alcohols e.g., ethanol, butanol
  • ethers e.g., methyl tert-butyl ether or tetrahydrofuran
  • ketones e.g., acetone
  • aldehydes e.g.
  • the first is gaseous
  • the aqueous solution is particularly preferably a fermentation solution in which at least one of the abovementioned organic substances is prepared by fermentation or enzymatically, very particularly preferably a fermentation solution obtained by ethanolic fermentation using yeasts or bacteria or by a so-called ABE method.
  • Fermentation is obtained by means of bacteria.
  • ABE fermentation bacteria produce acetone, butanol and ethanol (ABE).
  • This gas stripping is particularly preferably carried out in situ, wherein in situ means that the gas stripping takes place during the fermentation. Gas stripping may also be after
  • Gas stripping may be done in an external gas stripping device connected to the fermentor.
  • the adsorption takes place at a higher pressure (pl) than the desorption.
  • the pressure during the adsorption is, for example, in the range from 0.4 to 20 bar, preferably in the range from 0.6 to 10 bar, particularly preferably in the range from 0.8 to 5 bar and very particularly preferably in the range from 1 to 2, 5 bar.
  • the temperature of the gas stream when contacted with the composite material is between 0 and 250 ° C, preferably between 10 and 200 ° C, more preferably between 20 and 150 ° C and most preferably between 30 and 100 ° C.
  • the flow rate of the first gaseous substance mixture is adjusted so that a
  • Substance mixture adjusted so that a volume flow when contacting the first gaseous mixture with the composite material in step (i) is achieved, which corresponds to an empty tube speed of 0.75 m / s or more, more preferably 1.0 m / s or more.
  • the flow of the first gaseous mixture is passed over the packing of composite material until a desired load is achieved.
  • This desired loading need not be specifically determined but, for example, the flow of the first gaseous mixture for a certain suitable period of time may appear over the packing of the
  • the at least one component to be enriched is desorbed from the composite material and the
  • a second gaseous mixture is formed with the atmosphere surrounding the composite material during desorption.
  • a purge gas is used in the desorption, ie, the at least one component to be enriched which is desorbed from the composite material is rinsed from the composite package by a gas (purge gas) carried over the composite material.
  • purge gases are inert gases, more preferably the purge gases are air,
  • the purge gas contains water.
  • the temperature of the purge gas is above the temperature of the adsorbent.
  • the flow direction of the second gaseous mixture is reverse to the flow direction of the first gaseous mixture in step (i).
  • a mixed form of PSA and TSA is used, i. that the desorption does not take place solely by lowering the pressure, but by supporting the introduction of thermal energy.
  • This supporting introduction of thermal energy can by introducing hot purge gas or by heating on the column wall, via heating coils inside the
  • Adsorber column or the packing of the composite material or combinations of all three options Adsorber column or the packing of the composite material or combinations of all three options. If a metallic material (c) in a flat shape in
  • Composite material is present, the introduction of thermal energy can also be effected by heating the metallic material, for example by magnetic induction, electrical resistance heating or by heat exchange.
  • Composite material is present, the introduction of thermal energy can also be effected by heating the metallic material, for example by magnetic induction or by heat exchange.
  • the number of pressure changes between p1 and p2 is preferably at least 1 per hour, more preferably at least 2 per hour and particularly preferably at least 3 per hour.
  • the average velocity with which the pressure change between p1 and p2 is carried out is preferably 40 mbar / min or more, more preferably 100 mbar / min or more, particularly preferably 200 mbar / min or more.
  • Zeolite particles, 102 reticulated PTFE fibrils).
  • Example 1 Preparation of a PTFE-zeolite composite material
  • PTFE dispersion TE3893-N (about 60% PTFE content, DuPont) with a PTFE mass fraction of 10% together with a zeolite (ZSM-5, H-form; SiO 2 / Al 2 O 3 > 800, manufacturer: Süd -Chemie AG, Germany), by mixing the individual materials and then kneading in a one-hour
  • the fibrillation of the PTFE and incorporation of the zeolite is established.
  • the nonwoven product is rolled biaxially into a film between heated rolls (temperature 70 ° C) in several steps, the fibrillation optimized and a homogeneous layer thickness of 0.5 mm is set. Suitable for this step is a
  • Example 2 Adsorption of ethanol from a gas stream
  • Gas washing bottle (VWR, Germany) used.
  • the gas stream was passed through a glass column (VWR, Germany) packed with the composite material of Example 1.
  • the gas stream was returned to the gas scrubber as part of a recirculation loop so that the system was closed.
  • the glass column was heated to 40 ° C. via a heating sleeve (Mohr & Co GmbH, Germany).
  • the gas stripping in the gas washing bottle took place at 30 ° C.
  • the ethanol concentration was determined by gas chromatography
  • Example 3 Ad- and desorption of ethanol by pressure change
  • Examples 2 and 3 were compared with respect to pressure loss. These were glass columns with 30 mm diameter with both
  • the dump height was 290 mm in both cases. Subsequently, a gas stream was passed through the column, which corresponded to a gas empty tube velocity of 1 m / s. In front of the column, the pressure was over one
  • the pressure difference corresponds to the pressure loss of the packing.
  • the pressure loss projected to one meter was 7.5 mbar and for the zeolite granules 153.5 mbar.
  • the pressure loss of the PTFE zeolite material was thus less than 5% of the granulate bed. Even when normalized to the same mass of adsorbent, the pressure loss of the PTFE zeolite material was less than 7.5% of the granule bed.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

L'invention concerne un procédé pour l'enrichissement d'au moins un composant d'un mélange gazeux, qui comprend les étapes consistant : (i) à mettre en contact un flux d'un premier mélange gazeux contenant au moins un composant à enrichir avec un matériau composite à une première pression p1, de telle sorte que le ou les composants à enrichir soient adsorbés sur le matériau composite et qu'un matériau composite chargé soit obtenu, le matériau composite comprenant (a) une matrice poreuse constituée d'un polymère contenant du fluor comprenant une proportion de motifs monomères tétrafluoroéthylène d'au moins 95 % en moles rapporté au nombre total des motifs monomères et (b) des particules de zéolithe qui sont encapsulées dans la matrice et entourées de filaments de celle-ci; (ii) à interrompre le flux du mélange gazeux; et (iii) à désorber le ou les composants à enrichir du matériau composite chargé par réduction de la pression à une pression p2, où p1 - p2 ≥ 200 mbars, de telle sorte qu'un deuxième mélange gazeux est formé, et à évacuer le deuxième mélange gazeux du matériau composite.
EP12725726.9A 2011-06-10 2012-06-01 Procédé d'adsorption à pression alternée Withdrawn EP2717994A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12725726.9A EP2717994A1 (fr) 2011-06-10 2012-06-01 Procédé d'adsorption à pression alternée

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11004796A EP2532411A1 (fr) 2011-06-10 2011-06-10 Procédé d'adsorption modulée en pression
PCT/EP2012/060376 WO2012168154A1 (fr) 2011-06-10 2012-06-01 Procédé d'adsorption à pression alternée
EP12725726.9A EP2717994A1 (fr) 2011-06-10 2012-06-01 Procédé d'adsorption à pression alternée

Publications (1)

Publication Number Publication Date
EP2717994A1 true EP2717994A1 (fr) 2014-04-16

Family

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Family Applications (2)

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EP11004796A Withdrawn EP2532411A1 (fr) 2011-06-10 2011-06-10 Procédé d'adsorption modulée en pression
EP12725726.9A Withdrawn EP2717994A1 (fr) 2011-06-10 2012-06-01 Procédé d'adsorption à pression alternée

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EP11004796A Withdrawn EP2532411A1 (fr) 2011-06-10 2011-06-10 Procédé d'adsorption modulée en pression

Country Status (5)

Country Link
US (1) US9446344B2 (fr)
EP (2) EP2532411A1 (fr)
CN (1) CN103781531A (fr)
BR (1) BR112013031322B1 (fr)
WO (1) WO2012168154A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5917169B2 (ja) * 2012-01-30 2016-05-11 大陽日酸株式会社 窒素富化ガス製造方法、ガス分離方法および窒素富化ガス製造装置
EP2719445A1 (fr) * 2012-10-09 2014-04-16 Clariant International Ltd. Procédé de concentration de petites molécules organiques de mélanges gazeux ou liquides à l'aide d'une membrane composite comprenant un polymère fluoré et particules siliceuses hydrophobes
HUE053044T2 (hu) 2012-12-28 2021-06-28 Clariant Int Ltd Eljárás aromaanyagok kinyerésére
US10315184B2 (en) 2017-04-17 2019-06-11 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Adsorbent-loaded beads for high temperature adsorption processes
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CN103781531A (zh) 2014-05-07
US9446344B2 (en) 2016-09-20
US20140326138A1 (en) 2014-11-06
WO2012168154A1 (fr) 2012-12-13
BR112013031322B1 (pt) 2020-08-11
BR112013031322A2 (pt) 2015-09-22
EP2532411A1 (fr) 2012-12-12

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