CN101032677A - Method of gas purification - Google Patents

Method of gas purification Download PDF

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Publication number
CN101032677A
CN101032677A CNA2006100793441A CN200610079344A CN101032677A CN 101032677 A CN101032677 A CN 101032677A CN A2006100793441 A CNA2006100793441 A CN A2006100793441A CN 200610079344 A CN200610079344 A CN 200610079344A CN 101032677 A CN101032677 A CN 101032677A
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CN
China
Prior art keywords
gas
flow
coated
ionic liquid
feed gas
Prior art date
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Pending
Application number
CNA2006100793441A
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Chinese (zh)
Inventor
吕亚平
翟素玲
王清民
F·菲奇
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Linde LLC
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BOC Group Inc
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 BOC Group Inc filed Critical BOC Group Inc
Priority to CNA2006100793441A priority Critical patent/CN101032677A/en
Priority to PCT/CN2007/000686 priority patent/WO2007101397A1/en
Publication of CN101032677A publication Critical patent/CN101032677A/en
Pending legal-status Critical Current

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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
    • B01D53/1493—Selection of liquid materials for use as 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

The present invention discloses method of separating acid gas from gas flow. The gas flow containing acid gas, such as methane, is made to contact with a separator of, say, base material, porous film and/or bead matter coated with ionic liquid. The ionic liquid may be ionic liquid with imidazolinyl group, pyridyl group or ammonium group.

Description

Method for gas purification
Technical field
The invention provides the method for purifying gas flow.More particularly, the method that the present invention relates to use the adsorbent equipment made by ionic liquid from flow of feed gas, to remove sour gas.
Hydrogen sulfide can form acid with carbon dioxide when contacting with water.These acid exist with gas form in a lot of industrial process, and hydrogen sulfide and carbon dioxide are the accessory substances of these industrial process.Sour gas is undesirable component, and is particularly all the more so in the process of preparation that relates to certain gas or admixture of gas or recovery.These sour gas are harmful to industrial process, can cause corrosion and interference in the others of operating.
Therefore must remove these sour gas to reach quality that improves final products and the dual benefits that improves equipment life.Usually sour gas is removed by absorption, film infiltration or absorption method, when hanging down, the dividing potential drop of sour gas can adopt absorption process, the film infiltration can be used for removing carbon dioxide from gases at high pressure, when containing the heavier sulphur compound of for example mercaptan and carbon disulfide in the lower and gas when acidic gas concentration, absorption is a kind of feasible selection.
The inventor has found a kind of ion liquid method of utilizing, and this method can use multiple removal technology to remove sour gas from the air-flow of for example natural gas.
Summary of the invention
The invention provides ion liquid purposes, this ionic liquid is used in multiple material and the base material, is used for removing from air-flow sour gas.
Adopted ionic liquid in the method for the invention.Ionic liquid is meant the ionic material as salt fully, and it is liquid state when being lower than normal temperature.Usually this temperature is 100 ℃, and ion liquid fusing point is lower than 0 ℃.Ionic liquid still remains liquid state in about 300-400 ℃ wide temperature range.
In one aspect of the invention, preferred ionic liquid is selected from imidazoles , pyridine , ammonium and  base ionic liquid.These ionic liquids are ionic liquids (TSIL) of special purpose (task specific), and these compounds have following structure:
Cation:
Figure A20061007934400041
Anion:
PF 6 , BF 4 , Hal , ROSO 3 Deng.
R 1, R 2, R 3And R 4The various groups that refer to are different alkyl and alkenyls.Some amido for example thiocarbamide or amino also can be introduced in the ion liquid cation, to improve it to H 2S and CO 2Sequestering power.
Ionic liquid of the present invention can be used in the multiple gases separation method of removing sour gas from air-flow to be clean.
This ionic liquid is coated on the surface of monolith substrate, and the shape of this base material can be cellular, spongy or netted.These base materials are made into colyliform, insert in the gas column, and admixture of gas can flow through the integrally-built fixed bed that contains through the ionic liquid coating like this.These monolith substrate also can be processed with jet printing (in-jetprinting) or automatic casting (robocasting) method.
Ionic liquid also can be coated on the porous film material.Making film can be symmetry or unsymmetric form, the pore size radial variations of film.This film can be coated with one deck or be full of the ionic liquid of selecting for use, as the liquid film of affinity absorbent or load.This film can be inserted in the gas column as being single tube or multitube, and admixture of gas to be clean can flow in the pipe side of this membrane structure.
Also ionic liquid can be coated on porous pearl and/or the shot-like particle.Pearl that was coated with and/or shot-like particle can be loaded into gas column, are arranged in fluid bed or fixed bed.
Also ionic liquid can be coated on porous pearl and/or the shot-like particle, and these pearls and/or shot-like particle can be fixed in or inject in sheet material stratiform or lamination.The sheet material through coating that comprises the pearl that was coated with and/or shot-like particle is to use like this: these sheet materials are stacked on together, and making in the time of in being deposited in gas column has the slit to exist between the sheet material.The flow direction of gas to be clean is parallel with plate surface.
The sour gas that can handle with method of the present invention is those sour gas that exist in air-flow usually.These sour gas are by forming with the hydrogen sulfide and the carbon dioxide of water reaction generation sour gas.
Brief description of drawings
This accompanying drawing is the schematic diagram that the present invention removes being used to of using the twin-beds method of sour gas.
Detailed description of the present invention
In one embodiment, the invention provides a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises makes described flow of feed gas be coated with ion liquid monolith substrate and contact with one.
In another embodiment, the invention provides a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises makes described flow of feed gas be coated with ion liquid perforated membrane and contact with one.
In another embodiment, the invention provides a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises to be made described flow of feed gas and is coated with porous pearl and/or shot-like particle ion liquid or that be injected in sheet material stratiform or lamination and contacts.
Set forth the present invention with reference to the accompanying drawings, accompanying drawing is a double bed system that is used for removing sour gas from air-flow.Unstrpped gas can be the natural gas from oil well or coal bed, enters into pipeline 2 by pipeline 1.Make the flow of feed gas that contains acid gas impurities be sent to pipeline 3 by control valve 2A and 2B along pipeline 2.Flow to by pipeline 3 in flow of feed gas that valve 2B keeps closing in the process of first A.First A will comprise the various devices of removing sour gas from flow of feed gas, for example be coated with ion liquid integrated substrate, is coated with ion liquid porous film material, is coated with ion liquid pearl and/or shot-like particle or flooded sheet material ion liquid stratiform or lamination.Sour gas will be retained in the sour gas separation equipment that is used for first A, and flow of feed gas continues to pass piping 4 simultaneously, open valve 5A by pipeline 5, be recovered as product gas in this flow of feed gas through purifying.
The part of the flow of feed gas that purified will flow through pipeline 5, open valve 5B and enter second B.In this job description of double bed system, bed A generates bed, and bed B is desorb or adverse current bed.Which bed is that the order that generates bed will rotate, like this when a bed when generating the unstrpped gas that purifies, another is removing the sour gas that it adsorbs when generating bed.The flow of feed gas that process purifies enters the desorb of the sour gas that will adsorb when second B will help bed B as the generation bed.Contain purifying gas flow at the sour gas of preceding absorption now by pipeline 7, enter pipeline 8, open valve 8B and finally discharge, perhaps can pass through pipeline 8, open valve 8A feeding pipeline 3, and will enter first A thus and purify by pipeline 9.
The air-flow that perhaps contains the sour gas of purging can enter pipeline 2 by pipeline 7, opens valve 2B and makes it further by pipeline 2, opens valve 2A, and it is imported by managing 1 flow of feed gas to be clean that enters.
Though invention has been described in conjunction with specific embodiment, obviously, a lot of other forms of the present invention and improvement are conspicuous for a person skilled in the art.Claims of the present invention should be interpreted as having covered all conspicuous like this form and improvement within true spirit of the present invention and scope usually.

Claims (3)

1, a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises to be made described flow of feed gas and is coated with ion liquid monolith substrate and contacts.
2, a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises to be made described flow of feed gas and is coated with ion liquid perforated membrane and contacts.
3, a kind of from the flow of feed gas that contains sour gas the method for separating acid gas, this method comprises to be made described flow of feed gas and is coated with porous pearl and/or shot-like particle ion liquid or that inject sheet material stratiform or lamination and contacts.
CNA2006100793441A 2006-03-08 2006-03-08 Method of gas purification Pending CN101032677A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNA2006100793441A CN101032677A (en) 2006-03-08 2006-03-08 Method of gas purification
PCT/CN2007/000686 WO2007101397A1 (en) 2006-03-08 2007-03-05 Gas purification processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2006100793441A CN101032677A (en) 2006-03-08 2006-03-08 Method of gas purification

Publications (1)

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CN101032677A true CN101032677A (en) 2007-09-12

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WO (1) WO2007101397A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101229486B (en) * 2007-01-26 2010-11-10 中国石油化工股份有限公司 Method of preparing ionic liquid supporting liquid sheet for organic solvent separation
CN102091498B (en) * 2009-12-14 2015-07-01 琳德股份公司 Method for treating tail gas produced by terephthalic acid

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US8398743B2 (en) 2007-05-08 2013-03-19 General Electric Company Methods and systems for reducing carbon dioxide in combustion flue gases
GB0905896D0 (en) 2009-04-06 2009-05-20 Univ Belfast Process for removing metals from hydrocarbons
GB0908986D0 (en) 2009-05-26 2009-07-01 Univ Belfast Process for removing organic acids from crude oil and crude oil distillates
CN102091502A (en) * 2009-12-10 2011-06-15 琳德股份公司 Method for gas prepurification
KR101149079B1 (en) 2010-01-18 2012-05-24 한국에너지기술연구원 Enhanced gas transport ionic liquid-polymer gel membrane and methods of producing same
GB201004638D0 (en) 2010-03-19 2010-05-05 Univ Belfast Separation of gases
JP5877961B2 (en) * 2011-05-31 2016-03-08 Ｊｘ日鉱日石エネルギー株式会社 Gas separation gel membrane
US8906135B1 (en) * 2011-09-01 2014-12-09 U.S. Department Of Energy Method of purifying a gas stream using 1,2,3-triazolium ionic liquids
GB2495076B (en) 2011-09-16 2018-05-09 Petroliam Nasional Berhad Petronas Separation of gases
JP6218742B2 (en) 2011-11-29 2017-10-25 ダンマークス・テクニスケ・ユニヴェルシテット Absorption and oxidation of NO in ionic liquids
US9233339B2 (en) 2012-04-23 2016-01-12 Ut-Battelle, Llc Ionic liquid-functionalized mesoporous sorbents and their use in the capture of polluting gases
DK3154661T3 (en) * 2014-04-16 2018-06-06 Univ Danmarks Tekniske COMBINED OXIDATION AND ABSORPTION OF NOX USING AN IONIC LIQUID TANDEM PROCESS
EP3098293A1 (en) 2015-05-27 2016-11-30 Evonik Degussa GmbH A process for removing metal from a metal-containing glyceride oil comprising a basic quaternary ammonium salt treatment
EP3098292A1 (en) 2015-05-27 2016-11-30 Evonik Degussa GmbH A process for refining glyceride oil comprising a basic quaternary ammonium salt treatment
GB2538758A (en) 2015-05-27 2016-11-30 Green Lizard Tech Ltd Process for removing chloropropanols and/or glycidol
DE102015212749A1 (en) 2015-07-08 2017-01-12 Evonik Degussa Gmbh Method for dehumidifying moist gas mixtures
EP3257568B1 (en) 2016-06-14 2019-09-18 Evonik Degussa GmbH Method for the removal of moisture from moist gas mixtures by use of ionic liquids
DE102016210478A1 (en) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Method for dehumidifying moist gas mixtures
DE102016210484A1 (en) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Method for dehumidifying moist gas mixtures
US10301553B2 (en) 2017-02-28 2019-05-28 Ecolab Usa Inc. Use of sulfonium salts as hydrogen sulfide inhibitors
EP3483237A1 (en) 2017-11-10 2019-05-15 Evonik Degussa GmbH Method of extracting fatty acids from triglyceride oils
EA202091413A1 (en) * 2018-07-11 2020-09-24 Бейкер Хьюз Холдингз Ллк WELL ASPHALTEN INHIBITORS BASED ON IONIC LIQUID AND METHODS OF THEIR APPLICATION
US10900128B2 (en) 2018-08-29 2021-01-26 Championx Usa Inc. Use of sulfonium salts as corrosion inhibitors
WO2020189293A1 (en) * 2019-03-19 2020-09-24 日東電工株式会社 Structure containing ionic liquid

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US6958085B1 (en) * 2003-03-26 2005-10-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High performance immobilized liquid membrane for carbon dioxide separations
US20050129598A1 (en) * 2003-12-16 2005-06-16 Chevron U.S.A. Inc. CO2 removal from gas using ionic liquid absorbents
CN1709553A (en) * 2005-06-02 2005-12-21 中国科学院过程工程研究所 Amino acid ion liquid for acidic gas absorption

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101229486B (en) * 2007-01-26 2010-11-10 中国石油化工股份有限公司 Method of preparing ionic liquid supporting liquid sheet for organic solvent separation
CN102091498B (en) * 2009-12-14 2015-07-01 琳德股份公司 Method for treating tail gas produced by terephthalic acid

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