EP2726178A1 - Procedes et dispositifs pour obtenir des produits gazeux - Google Patents

Procedes et dispositifs pour obtenir des produits gazeux

Info

Publication number
EP2726178A1
EP2726178A1 EP12729353.8A EP12729353A EP2726178A1 EP 2726178 A1 EP2726178 A1 EP 2726178A1 EP 12729353 A EP12729353 A EP 12729353A EP 2726178 A1 EP2726178 A1 EP 2726178A1
Authority
EP
European Patent Office
Prior art keywords
detergent
gas
carbon dioxide
washing section
gas mixture
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Withdrawn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
EP12729353.8A
Other languages
German (de)
English (en)
Inventor
Horst Weiss
Alexander Brandl
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.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Publication of EP2726178A1 publication Critical patent/EP2726178A1/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Withdrawn legal-status Critical Current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
    • B01D53/14—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
    • B01D53/14—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
    • B01D53/1406—Multiple stage absorption
    • 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
    • B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
    • C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
    • 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
    • B01D2252/2021—Methanol
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Definitions

  • the invention relates to a method for physical gas scrubbing, wherein a
  • Carbon dioxide pre-loaded detergent is passed through a first washing section to selectively separate sulfur components from the feed gas and to produce a desulfurized gas mixture. Furthermore, the invention relates to a device for carrying out the method.
  • Solubility coefficients the better the gas dissolves in the liquid, the greater its solubility coefficient. The solubility coefficient is
  • V is the total amount of the gas mixture to be separated
  • p is the pressure prevailing in the gas mixture
  • the solubility coefficient of the gas component to be washed out with respect to the detergent used is a corresponding adjustment of the amount of detergent possible, in a washing step the one
  • a well-known physical gas scrubbing is the methanol scrubbing, in which liquid methanol is used at temperatures well below 0 ° C as a detergent. It is used in particular for separating carbon dioxide and sulfur components from synthesis gas and thus obtaining a gas mixture consisting of hydrogen and carbon monoxide.
  • a methanol scrubbing is described in which from a hydrogen, carbon monoxide and carbon dioxide and the sulfur components carbon dioxide sulfide and hydrogen sulfide-containing synthesis gas in two successive washes of carbon dioxide and sulfur components are selectively washed out.
  • the synthesis crude is this purpose in a
  • Performed absorber column in which a first and a two washing section are arranged one above the other. To remove the carbon dioxide in the second washing section unloaded methanol is used, while in the first washing section the
  • Sulfur components are washed out with a portion of the methanol, which was already pre-loaded with the carbon dioxide separation with carbon dioxide. Since the sulfur components have a solubility coefficient with respect to methanol, which is several times greater than that of carbon dioxide, is for their
  • gas mixture produced by physical gas scrubbing is to be supplied to a gas turbine as fuel, as complete a removal as possible of the
  • Object of the present invention is therefore to provide a method and an apparatus of the type described above, through which the disadvantages of the prior art are overcome.
  • Washing section is used as a detergent.
  • the boundary of the first washing section is defined as an area in which, for the first time, between
  • the amount of detergent used is usefully chosen so that it corresponds to the minimum required for the complete separation of the sulfur components in the first washing section.
  • the detergent is in the second
  • Pre-loaded washing section preferably so far that it can be introduced saturated with carbon dioxide in the first washing section. Since such a detergent has no or only a very small capacity for carbon dioxide uptake, no or only very little carbon dioxide is washed out of the feed gas in the first washing section, whereby the desulfurized gas mixture with a
  • Carbon dioxide concentration is recovered, which largely corresponds to that of the feed gas.
  • the gas mixture not passed on into the second washing section can therefore be emitted as a sulfur-free product containing hydrogen and carbon monoxide with a high carbon dioxide content and used, for example, as fuel for a gas turbine or as a methanol synthesis gas.
  • the amount of carbon dioxide contained in the feed gas is so large that merely a separation of the sulfur components results in a desulphurised gas mixture whose carbon dioxide content is too high to be able to use it directly as a product. In such a case, it makes sense to introduce into the first washing section a detergent not completely laden with carbon dioxide, so that apart from sulfur components, carbon dioxide is also separated from the feed gas.
  • an embodiment of the method according to the invention provides that the heat in the first washing section in at least one cooling step solution heat is removed.
  • the cooling is performed so that the detergent exits at a temperature of the first washing section, which differs by at most 5 ° C from the temperature at which it in the first
  • Washing section enters.
  • DMPEG dimethyl polyethylene glycol ether
  • NMP N-methyl-2-pyrrolidone
  • Gas product can be used for example as fuel gas in a gas turbine, so it is necessary to reduce this pressure, since fuel gas of a gas turbine
  • a preferred embodiment of the method according to the invention therefore provides that the part of the desulphurised gas mixture which is not fed to the second washing section working in an expansion turbine is working relaxed. This also leads to a cooling of the desulfurized gas mixture.
  • Gas mixture z. B. is used for cooling a sulfur-free, used in the detergent regeneration for the backwashing of sulfur components detergent stream. Furthermore, the invention relates to a device for the separation of
  • physical gas scrubbing comprising an absorber column in which a first washing section is arranged below a second washing section, wherein the absorber column in its lower part a gas supply for the supply of the feed gas and at its head a withdrawal device for the withdrawal of an ivon sulfur components and carbon dioxide purified gas mixture and a detergent supply for the supply of an unloaded detergent in the second washing section.
  • the stated object is the device side according to the invention characterized in that a gas-side take-off is arranged between the first and the second washing section through which a section in the first washing 'desulfurized gas mixture can be withdrawn.
  • the invention provides that the detergent feed has at least two introduction points arranged at different levels, to which the quantity of the unladen detergent can be distributed. Further developing the invention, it is proposed that it has an expansion turbine connected to the gas side draw of the absorber column, in which desulfurized gas mixture can be expanded to perform work.
  • Via line 1 is a hydrogen, carbon monoxide, sulfur components and carbon dioxide containing synthesis gas in the lower part of the
  • Absorber column A initiated, in which the two washing sections W1 and W2 are arranged one above the other.
  • the synthesis crude gas first passes into the washing section W1, through which it is passed in countercurrent to a physically acting detergent.
  • the detergent which is, for example, methanol, is already pre-charged with carbon dioxide, so that predominantly sulfur components are separated from the syngas, while carbon dioxide remains largely completely in the gas phase.
  • the detergent is withdrawn through the chimney tray K and passed through line 2 through the heat exchanger E, where it is cooled to external refrigeration.
  • Part of the gas mixture desulphurized in the washing section W1 the carbon dioxide concentration of which is essentially that of the synthesis raw gas 1, is withdrawn via the gas side draw 3 and after a work-producing
  • washing section W2 the desulfurized gas mixture of carbon dioxide is released, so that a largely consisting of hydrogen and carbon monoxide gas mixture can be withdrawn as another product via line 5 from the top of the absorber column A.
  • the washing agent loaded with carbon dioxide in the washing section W2 is completely passed on to the washing section W1, where it is used as a detergent for separating the sulfur components from the synthesis gas.
  • the absorber column A is operated so that the detergent in the washing section W2 is largely pre-loaded with carbon dioxide. In order to always be able to achieve this even under fluctuating operating conditions, the amount of detergent 4 can be distributed to the two lines 6 and 7 by means of the control elements a and b and introduced into the washing section W2 at different levels.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Industrial Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L'invention concerne un procédé et un dispositif de lavage de gaz physique, procédé selon lequel un gaz de départ (1) contenant de l'hydrogène, du monoxyde de carbone et de l'oxysulfure de carbone et/ou de l'hydrogène sulfuré est guidé à contre-courant d'un agent de lavage préalablement chargé de dioxyde de carbone à travers une première section de lavage (W1) pour séparer dans une large mesure de manière sélective des composants sulfureux contenus dans le gaz de départ et pour générer un mélange gazeux (3) exempt de soufre. Du dioxyde de carbone est isolé uniquement à partir d'une quantité partielle du mélange gazeux exempt de soufre, dans une deuxième section de lavage, par lavage au moyen d'un agent de lavage (4) non chargé, et l'agent de lavage préalablement chargé de dioxyde de carbone ainsi obtenu est utilisé en tant qu'agent de lavage dans une première section de lavage (W1).
EP12729353.8A 2011-07-01 2012-06-14 Procedes et dispositifs pour obtenir des produits gazeux Withdrawn EP2726178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011107814A DE102011107814A1 (de) 2011-07-01 2011-07-01 Verfahren und Vorrichtung zur Gewinnung von Gasprodukten
PCT/EP2012/002516 WO2013004335A1 (fr) 2011-07-01 2012-06-14 Procedes et dispositifs pour obtenir des produits gazeux

Publications (1)

Publication Number Publication Date
EP2726178A1 true EP2726178A1 (fr) 2014-05-07

Family

ID=46354144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12729353.8A Withdrawn EP2726178A1 (fr) 2011-07-01 2012-06-14 Procedes et dispositifs pour obtenir des produits gazeux

Country Status (10)

Country Link
US (1) US9895650B2 (fr)
EP (1) EP2726178A1 (fr)
JP (1) JP6242789B2 (fr)
CN (1) CN103826724B (fr)
AU (1) AU2012280728B2 (fr)
BR (1) BR112013032912B1 (fr)
CA (1) CA2839380C (fr)
DE (1) DE102011107814A1 (fr)
WO (1) WO2013004335A1 (fr)
ZA (1) ZA201309217B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012111185A1 (de) * 2012-11-20 2014-05-22 Thyssenkrupp Uhde Gmbh Apparat zur Gaswäsche
DE102013001677A1 (de) * 2013-01-31 2014-07-31 Linde Aktiengesellschaft Verfahren und Vorrichtung zur Erzeugung von Brennstoff für eine Gasturbine
DE102016010515A1 (de) * 2016-08-30 2018-03-01 Linde Aktiengesellschaft Verfahren und Vorrichtung zur effektiven Strippung von teilbeladenem Waschmittel bei physikalischen Gaswäschen
EP3441127B1 (fr) * 2017-08-07 2020-02-12 L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude Colonne d'absorption dotée du circuit d'échange thermique externe

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DE2924162A1 (de) * 1979-06-15 1980-12-18 Linde Ag Verfahren zum selektiven auswaschen von schwefelverbindungen aus feuchten gasgemischen
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DE3716199A1 (de) * 1987-05-14 1988-11-24 Linde Ag Verfahren und vorrichtung zur reinigung von rohgasen unter gleichzeitiger gewinnung von synthese- und brenngas
GB9702742D0 (en) * 1997-02-11 1997-04-02 Ici Plc Gas absorption
CN1218866C (zh) * 2002-04-03 2005-09-14 中国石油化工集团公司 低温甲醇洗工艺
CN100415346C (zh) * 2005-06-02 2008-09-03 中国寰球工程公司 一种低温甲醇净化羰基气体的方法
DE102006014302A1 (de) * 2006-03-28 2007-10-04 Linde Ag Verfahren und Vorrichtung zur Regenerierung des beladenen Waschmittels in einer physikalischen Gaswäsche
FR2911516B1 (fr) * 2007-01-19 2009-11-13 Total Sa Procede de purification d'un melange gazeux contenant des gaz acides
JP5242207B2 (ja) * 2008-03-18 2013-07-24 新日鉄住金エンジニアリング株式会社 高炉ガスの利用プロセスにおける高炉ガスからの二酸化炭素の分離回収方法
JP2011525860A (ja) * 2008-06-26 2011-09-29 ユーオーピー エルエルシー セミリーン物理溶媒を冷却するための二酸化炭素吸収剤の部分的ポンプアラウンド
KR20110063759A (ko) * 2008-08-22 2011-06-14 커먼웰쓰 사이언티픽 앤드 인더스트리얼 리서치 오가니제이션 Ｃｏ2 저감 연소 배기 가스의 처리
US8460436B2 (en) 2009-11-24 2013-06-11 Alstom Technology Ltd Advanced intercooling and recycling in CO2 absorption
EP2613867B1 (fr) * 2010-09-09 2018-05-02 ExxonMobil Research and Engineering Company Procédé de lavage de co2 avec un absorbant comprenant une amine nucléophile et une base non-nucléophile dans un solvant non-aqueux

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Also Published As

Publication number Publication date
AU2012280728A1 (en) 2013-11-28
JP2014523802A (ja) 2014-09-18
JP6242789B2 (ja) 2017-12-06
CA2839380C (fr) 2019-09-17
BR112013032912B1 (pt) 2020-11-17
DE102011107814A1 (de) 2013-01-03
AU2012280728B2 (en) 2016-10-20
CN103826724A (zh) 2014-05-28
BR112013032912A2 (pt) 2017-01-24
WO2013004335A1 (fr) 2013-01-10
US20140190350A1 (en) 2014-07-10
US9895650B2 (en) 2018-02-20
CA2839380A1 (fr) 2013-01-10
CN103826724B (zh) 2017-08-01
ZA201309217B (en) 2014-08-27

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