SE535276C2 - Method and apparatus containing a loop pump for separating carbon dioxide from a gas - Google Patents

Method and apparatus containing a loop pump for separating carbon dioxide from a gas Download PDF

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Publication number
SE535276C2
SE535276C2 SE1000592A SE1000592A SE535276C2 SE 535276 C2 SE535276 C2 SE 535276C2 SE 1000592 A SE1000592 A SE 1000592A SE 1000592 A SE1000592 A SE 1000592A SE 535276 C2 SE535276 C2 SE 535276C2
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Sweden
Prior art keywords
gas
liquid
carbon dioxide
loop pump
led
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Application number
SE1000592A
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Swedish (sv)
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SE1000592A1 (en
Inventor
Per-Olof Karlsson
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Biosling Ab
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Publication date
Application filed by Biosling Ab filed Critical Biosling Ab
Priority to SE1000592A priority Critical patent/SE535276C2/en
Priority to PCT/SE2011/000107 priority patent/WO2011152770A1/en
Priority to EP11790074.6A priority patent/EP2576017A4/en
Publication of SE1000592A1 publication Critical patent/SE1000592A1/en
Publication of SE535276C2 publication Critical patent/SE535276C2/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
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B01D53/185—Liquid distributors
    • 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
    • B01D53/002—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 condensation
    • 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
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—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
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
    • C12M47/18—Gas cleaning, e.g. scrubbers; Separation of different gases
    • 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
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/22—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/24—Hydrocarbons
    • B01D2256/245—Methane
    • 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
    • B01D2258/00—Sources of waste gases
    • B01D2258/05—Biogas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/59—Biological synthesis; Biological purification

Abstract

Uppfinningen avser ett förfarande vid rening/separering/anrikning av en gas ellerbiogas, som innehåller metan och koldioxid. Gasen (200) processas genom enspiralartat uppbyggd slingpump (20) tillsammans med en vätska (65) genomväxelvis dosering så att slingpumpen omväxlande matas med vätska och gassom efter tryckuppbyggnad lämnar slingpumpen (20) och leds till en gasseparator(30) från vilken gasen vid behov leds till en vätskeskrubber (40) för fortsatt reninginnan gasen transporteras till ett användningsställe. Vätskan i gasseparatorn ledstill ett strippertorn (50) för borttagande av koldioxid varefter vätskan leds till en vätsketank (60) för att återanvändas i förfarandet/processen. (Fig.1 ) The invention relates to a process for purifying / separating / enriching a gas or biogas which contains methane and carbon dioxide. The gas (200) is processed by a helically constructed loop pump (20) together with a liquid (65) alternately dosing so that the loop pump is alternately fed with liquid and gas which after pressure build-up leaves the loop pump (20) and is led to a gas separator (30) from which led to a liquid scrubber (40) for further purification before the gas is transported to a place of use. The liquid in the gas separator leads to a stripper tower (50) for removing carbon dioxide, after which the liquid is led to a liquid tank (60) for reuse in the process. (Fig.1)

Description

535 278 pumpanordning 20, en gasseparator 30, en vattenskrubber 40, ett strippertorn 50 och en vattentank 60. 535 278 pump device 20, a gas separator 30, a water scrubber 40, a stripper tower 50 and a water tank 60.

I behållarenslrötkammarens 10 bottenregion är tillfört en rötningsbenägen materialblandning eller ett rötningsmaterial 11. Rötningsmaterialet kan exempelvis innefatta gödsel, urin, organiskt material och bakterier för rötning med metangasalstring eller annan lämplig biomassa i vid mening. Genom exempelvis temperatur- och fukthaltsreglering kan gasproduktionen optimeras. Genom den anaeroba nedbrytningen omvandlas en stor del av rötningsmaterialets 11 energiinnehåll till biogas 200, som i huvudsak består av metan och koldioxid.In the bottom region of the container digestion chamber 10 is added a digestible material mixture or a digestion material 11. The digestion material may comprise, for example, manure, urine, organic material and bacteria for digestion with methane gas generation or other suitable biomass in the broadest sense. Through, for example, temperature and humidity control, gas production can be optimized. Due to the anaerobic decomposition, a large part of the energy content of the digestion material 11 is converted to biogas 200, which mainly consists of methane and carbon dioxide.

Därutöver förekommer normalt även biprodukter såsom exempelvis svavelväte och ammoniak.In addition, by-products such as hydrogen sulphide and ammonia are normally present.

Biogasen 200 som bubbelartat frigörs från rötningsmaterialet 11 vid rötningsprocessen stiger uppåt till behållarens 10 övre region, såsom framgår av figur 1.The biogas 200 which is bubbled released from the digestion material 11 in the digestion process rises upwards to the upper region of the container 10, as shown in Figure 1.

Pumpanordningen utgöres av en speciellt utformad slingpump 20 vars principiella utformning framgår av figur 2. Slingpumpen 20 är uppbyggd som en vinda där en slang eller ett rör är spiralartat formadlforrnat så att dess inlopp 21 är anordnat vid slangvindans ytterparti och dess utlopp 22 är anordnat vid slangvindans innerparti.The pump device consists of a specially designed loop pump 20, the basic design of which is shown in Figure 2. The loop pump 20 is constructed as a coil where a hose or a tube is helically shaped so that its inlet 21 is arranged at the outer part of the hose reel and its outlet 22 is arranged at the hose reel. inner part.

Slingpumpen 20 är uppburen av ett stativ (ej visat) och är medelst en drivmotor rotationsdrivningsbart anordnad kring en centralt anordnad rotationsaxel A i en rotationsriktning enligt pil B. Slingpumpen skruvar in tillförd gas och vätska i vindan under åstadkommande av tryckökning. Svivlar eller andra typer av rotationskopplingar är naturligtvis anordnade vid aktuella till- och frånledningar.The loop pump 20 is supported by a stand (not shown) and is by means of a drive motor rotatably arranged about a centrally arranged axis of rotation A in a direction of rotation according to arrow B. The loop pump screws supplied gas and liquid into the wind while providing pressure increase. Swivels or other types of rotary couplings are of course arranged at current supply and discharge lines.

Från rötkammarens 10 gasutrymme löper en ledning 100 som går via en gaskompressor 101 fram till en 3-vägsventil 102 som är förbunden med en ledning 103 som är ansluten till slingpumpens 20 inlopp 21. 535 276 Från vattentanken 60 löper en ledning 110 som via en vattenpump 111 går fram till 3- vägsventilen 102, där även ledningarna 100 och 103 är anslutna.From the gas space of the digestion chamber 10 runs a line 100 which goes via a gas compressor 101 to a 3-way valve 102 which is connected to a line 103 which is connected to the inlet 21 of the loop pump 20. 535 276 From the water tank 60 runs a line 110 which via a water pump 111 goes to the 3-way valve 102, where the lines 100 and 103 are also connected.

Genom reglering av 3-vägsventilen 102 kan biogas och vatten medelst kompressorn 101 och vattenpumpen 111 doseras växelvis så att den roterande slingpumpen 20 omväxlande matas med vatten och biogas, varvid en successiv tryckuppbyggnad sker när bildade vätskekuddar och gaskuddar på grund av slingpumpens rotation förflyttas genom pumpens spiralartat uppbyggda slingvarv (slangvinda) och lämnar slingpumpens innerparti via en ledning 120, som kommunicerar med gasseparatorn där gasen fyller separatorns övre del och vätskan (nu med ökat koldioxidinnehåll) fyller separatorns nedre del. Efterhand som tryckökning sker i slingpumpen kommer gaskuddarnas koldioxidinnehåll att upptagas av vätskan, så att gaskuddarnas koldioxidinnehåll därigenom minskar.By regulating the 3-way valve 102, biogas and water can be dosed alternately by means of the compressor 101 and the water pump 111 so that the rotary loop pump 20 is alternately fed with water and biogas, whereby a successive pressure build-up occurs when formed liquid cushions and gas cushions spirally constructed loop turns (hose reel) and leaves the inner part of the loop pump via a line 120, which communicates with the gas separator where the gas fills the upper part of the separator and the liquid (now with increased carbon dioxide content) fills the lower part of the separator. As the pressure increase in the loop pump takes place, the carbon dioxide content of the gas pads will be absorbed by the liquid, so that the carbon dioxide content of the gas pads thereby decreases.

Gasen i gasseparatorn 30 transporteras via en ledning 130 till vattenskrubbern 40 för ännu ett reningssteg. Vatten från tanken 60 transporteras till vattenskrubbern 40 via en ledning 140 längs vilken en vätskepump 141 är inrättad. Färdigrenad biogas lämnar skrubbern 40 via en ledning 150 till en förbrukare. Skrubbern 40 är uppbyggd enligt känd teknik, varvid man tillför biogas i skrubberns bottenregion och pumpar in vatten i dess toppregion. Därvid pressas biogasen genom vattnet under tryck, vilket får ytterligare koldioxid i gasen att lösa sig i vattnet.The gas in the gas separator 30 is transported via a line 130 to the water scrubber 40 for another purification step. Water from the tank 60 is transported to the water scrubber 40 via a line 140 along which a liquid pump 141 is arranged. Pre-branched biogas leaves the scrubber 40 via a line 150 to a consumer. The scrubber 40 is constructed according to known technology, whereby biogas is supplied in the bottom region of the scrubber and water is pumped into its top region. In this case, the biogas is forced through the water under pressure, which causes additional carbon dioxide in the gas to dissolve in the water.

Vätska från gasseparatorn 30 och från vattenskrubbern 40 transporteras via ledningar 140 till strippertornet 50 där luft tillföres (pil C) i syfte att reducera vätskans koldioxidinnehåll. l strippertornet 50 sker en trycksänkning så att koldioxiden kan återgå till naturens kretslopp eller omhändertas på lämpligt sätt, vilket symboliseras med en pil D. Den koldioxidreducerade vätskan i strippertornet återföres via en ledning 160 till vätsketanken 60 för att återanvändas i processen.Liquid from the gas separator 30 and from the water scrubber 40 is transported via lines 140 to the stripper tower 50 where air is supplied (arrow C) in order to reduce the carbon dioxide content of the liquid. In the stripper tower 50, a pressure drop occurs so that the carbon dioxide can return to nature's cycle or be disposed of appropriately, which is symbolized by an arrow D. The carbon dioxide-reduced liquid in the stripper tower is returned via a line 160 to the liquid tank 60 for reuse in the process.

Såsom ett icke-begränsande exempel kan nämnas att den biogas som lämnar rötkammaren 10 normalt består av ca 65% metangas, 35% koldioxid och spår av 535 276 bland annat svavelföreningar. När gasen har passerat kan den uppfinningsenliga roterande pumpen med åtföljande tryckökning och koldioxidavgång ökas gasens metanhalt till ca 94%. Genom efterföljande behandling av gasen i en vattenskrubber ökas gasens metanhalt till minst 97% och gasen är nu tillräckligt ren för att klassas som fordonsgas.As a non-limiting example, it can be mentioned that the biogas leaving the digestion chamber 10 normally consists of about 65% methane gas, 35% carbon dioxide and traces of 535,276, including sulfur compounds. When the gas has passed, the rotary pump according to the invention, with the accompanying increase in pressure and carbon dioxide emission, can increase the methane content of the gas to about 94%. By subsequent treatment of the gas in a water scrubber, the methane content of the gas is increased to at least 97% and the gas is now clean enough to be classified as vehicle gas.

Det skall inses att anordningens detaljuppbyggnad naturligtvis kan anpassas till rådande gasreningsbehov och att till exempel skrubbern ibland kan utelämnas. l en vid mening kan det beskrivna förfarandet användas för rening av flera olika gastyper i samverkan med flera olika vätsketyper.It should be understood that the detailed structure of the device can of course be adapted to the prevailing gas purification needs and that, for example, the scrubber can sometimes be omitted. In a broad sense, the process described can be used for purifying several different types of gas in conjunction with olika your different types of liquid.

Det skall inses att ritningarna är schematiska och att en del ventiler för bland annat önskade tryckreduceringar har utelämnats av tydlighetsskäl.It should be understood that the drawings are schematic and that some valves for, among other things, desired pressure reductions have been omitted for reasons of clarity.

Processen är enkel att automatisera.The process is easy to automate.

Det ovan beskrivna förfarandet kan köras kontinuerligt eller diskontinuerligt, allt efter behov.The procedure described above can be run continuously or discontinuously, as needed.

Vätskan eller vattnet 65 kan dopas med lämpliga tillsatser och/eller utbytas efter behov.The liquid or water 65 can be doped with suitable additives and / or replaced as needed.

Det skall inses att den ovan beskrivna biogasanläggningen kan utförandemässigt varieras på många olika sätt utöver vad som visats.It should be understood that the biogas plant described above can be varied in design in many different ways in addition to what has been shown.

Det är naturligtvis även möjligt att parallellköra två eller flera slingpumpar ifall sådant kapacitetsbehov föreligger. Även seriekoppling kan vara tillämpbart.Of course, it is also possible to run two or fl your loop pumps in parallel if such a capacity requirement exists. Series connection can also be applicable.

Det skall naturligtvis inses att många variationer är möjliga inom ramen för föreliggande uppfinningstanke. Bland annat vad gäller den gassammansättning som 535 276 skall separeras och/eller anrikas. En central komponent i uppfinningstanken är den spiralartat utformade slingpumpen vars detaljutformning naturligtvis kan anpassas efter rådande förutsättningar.It is, of course, to be understood that many variations are possible within the scope of the present inventive concept. Among other things with regard to the gas composition that 535 276 is to be separated and / or enriched. A central component of the inventive concept is the spirally designed loop pump, the detailed design of which can of course be adapted to prevailing conditions.

Uppfinningen är således inte begränsad till det visade och beskrivna, utan ändringar och modifikationer är naturligtvis möjliga inom ramen för bifogade patentkrav.The invention is thus not limited to what is shown and described, but changes and modifications are of course possible within the scope of the appended claims.

Claims (1)

1. 535 276 Patentkrav Förfarande vid rening/separering/anrikning av en gas eller biogas, som innehåller metan och koldioxid, varvid gasens koldioxidinnehåll skall reduceras, kännetecknat av att gasen (200) processas genom en spiralartat uppbyggd slingpump (20) tillsammans med en vätska (65) genom växelvis dosering så att slingpumpen omväxlande matas med vätska och gas som efter tryckuppbyggnad lämnar slingpumpen (20) och leds till en gasseparator (30) från vilken gasen vid behov leds till en vätskeskrubber (40) för fortsatt rening innan gasen transporteras till ett användningsställe. Förfarande enligt krav 1, kännetecknat av att vätskan i gasseparatorn leds till ett strippertorn (50) för borttagande av koldioxid varefter vätskan leds till en vätsketank (60) för att återanvändas i förfarandet/processen. Förfarande enligt krav 1 eller 2, kännetecknat av att gasalstring sker i en rötkammare (10) som kommunicerar med slingpumpen (20). Förfarande enligt något av krav 1-3, kännetecknat av att i vätskan (65) är tillsatt ett medel som löser eller upptar koldioxid. Anordning vid rening/separering/anrikning av en gas eller biogas, som innehåller metan och koldioxid, varvid gasens koldioxidinnehåll skall reduceras, kännetecknad av att anordningen innefattar en rötkammare (10), en slingpump (20) med spiralartad slinga, en gasseparator (30), ett strippertorn (50) och en vätsketank (60), och att att före slingpumpens (20) inlopp är anordnat ett organ (102) för växelvis tillmatning av gas och vätska. Anordning enligt krav 5, kännetecknad av att anordningen innefattar en vätskeskrubber (40).A process for purifying / separating / enriching a gas or biogas containing methane and carbon dioxide, wherein the carbon dioxide content of the gas is to be reduced, characterized in that the gas (200) is processed by a helically constructed loop pump (20) together with a liquid (65) by alternating dosing so that the loop pump is alternately fed with liquid and gas which after pressure build-up leaves the loop pump (20) and is led to a gas separator (30) from which the gas is led to a liquid scrubber (40) for further purification before transporting the gas to a place of use. Method according to claim 1, characterized in that the liquid in the gas separator is led to a stripper tower (50) for removing carbon dioxide, after which the liquid is led to a liquid tank (60) for reuse in the process / process. Method according to Claim 1 or 2, characterized in that gas generation takes place in a digestion chamber (10) which communicates with the loop pump (20). Method according to one of Claims 1 to 3, characterized in that an agent which dissolves or absorbs carbon dioxide is added to the liquid (65). Device for purifying / separating / enriching a gas or biogas containing methane and carbon dioxide, reducing the carbon dioxide content of the gas, characterized in that the device comprises a digestion chamber (10), a loop pump (20) with a spiral loop, a gas separator (30) , a stripper tower (50) and a liquid tank (60), and that before the inlet of the loop pump (20) a means (102) is provided for alternating supply of gas and liquid. Device according to claim 5, characterized in that the device comprises a liquid scrubber (40).
SE1000592A 2010-06-01 2010-06-01 Method and apparatus containing a loop pump for separating carbon dioxide from a gas SE535276C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE1000592A SE535276C2 (en) 2010-06-01 2010-06-01 Method and apparatus containing a loop pump for separating carbon dioxide from a gas
PCT/SE2011/000107 WO2011152770A1 (en) 2010-06-01 2011-05-31 Method, arrangement and use including a loop pump for separating carbon dioxide from gas
EP11790074.6A EP2576017A4 (en) 2010-06-01 2011-05-31 Method, arrangement and use including a loop pump for separating carbon dioxide from gas

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SE1000592A SE535276C2 (en) 2010-06-01 2010-06-01 Method and apparatus containing a loop pump for separating carbon dioxide from a gas

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SE1000592A1 SE1000592A1 (en) 2011-12-02
SE535276C2 true SE535276C2 (en) 2012-06-12

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Publication number Priority date Publication date Assignee Title
CA2996730C (en) 2015-08-28 2022-06-07 Energy Tech Innovations, LLC Method and apparatus for treating biogas
US11268063B2 (en) 2015-08-28 2022-03-08 Energy Tech Innovations, LLC Method and apparatus for treating biogas

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EP2576017A4 (en) 2014-01-01

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