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BR112018003738A2 - amina cíclica para remoção seletiva de sulfeto de hidrogênio - Google Patents

amina cíclica para remoção seletiva de sulfeto de hidrogênio

Info

Publication number
BR112018003738A2
BR112018003738A2 BR112018003738-9A BR112018003738A BR112018003738A2 BR 112018003738 A2 BR112018003738 A2 BR 112018003738A2 BR 112018003738 A BR112018003738 A BR 112018003738A BR 112018003738 A2 BR112018003738 A2 BR 112018003738A2
Authority
BR
Brazil
Prior art keywords
hydrogen sulfide
cyclic amine
sulfide removal
selective hydrogen
amine
Prior art date
Application number
BR112018003738-9A
Other languages
English (en)
Inventor
Ingram Thomas
Sieder Georg
Katz Torsten
Vorberg Gerald
Notz Ralf
Original Assignee
Basf Se
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 Basf Se filed Critical Basf Se
Publication of BR112018003738A2 publication Critical patent/BR112018003738A2/pt

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • B01D53/1493Selection of liquid materials for use as absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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
    • B01D53/1456Removing acid components
    • B01D53/1468Removing hydrogen sulfide
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L3/00Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10Working-up natural gas or synthetic natural gas
    • C10L3/101Removal of contaminants
    • C10L3/102Removal of contaminants of acid contaminants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L3/00Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10Working-up natural gas or synthetic natural gas
    • C10L3/101Removal of contaminants
    • C10L3/102Removal of contaminants of acid contaminants
    • C10L3/103Sulfur containing contaminants
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L3/00Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10Working-up natural gas or synthetic natural gas
    • C10L3/101Removal of contaminants
    • C10L3/102Removal of contaminants of acid contaminants
    • C10L3/104Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20431Tertiary amines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20436Cyclic amines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20436Cyclic amines
    • B01D2252/20442Cyclic amines containing a piperidine-ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20478Alkanolamines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • B01D2252/204Amines
    • B01D2252/20478Alkanolamines
    • B01D2252/20489Alkanolamines with two or more hydroxyl groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/50Combinations of absorbents
    • B01D2252/504Mixtures of two or more absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/24Hydrocarbons
    • B01D2256/245Methane
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C10L2290/541Absorption of impurities during preparation or upgrading of a fuel
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L2290/00Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C10L2290/542Adsorption of impurities during preparation or upgrading of a fuel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2

Landscapes

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

Abstract

a presente invenção se refere à utilização de uma amina de fórmula (i), em que os radicais r1 a r5 são cada um conforme definido na descrição, e a um absorvente e a um processo para a remoção de gases ácidos a partir de uma corrente de fluido, especialmente para a remoção seletiva de sulfeto de hidrogênio em relação ao dióxido de carbono. a presente invenção também se refere às aminas especiais adequadas para a remoção seletiva de sulfeto de hidrogênio. os absorventes à base de aminas de fórmula (i) possuem seletividade elevada, capacidade de carregamento elevada e boa capacidade de regeneração.
BR112018003738-9A 2015-09-29 2016-09-07 amina cíclica para remoção seletiva de sulfeto de hidrogênio BR112018003738A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15187385 2015-09-29
EP15187385.8 2015-09-29
PCT/EP2016/071073 WO2017055040A1 (de) 2015-09-29 2016-09-07 Zyklische amine zur selektiven entfernung von schwefelwasserstoff

Publications (1)

Publication Number Publication Date
BR112018003738A2 true BR112018003738A2 (pt) 2018-09-25

Family

ID=54251353

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112018003738-9A BR112018003738A2 (pt) 2015-09-29 2016-09-07 amina cíclica para remoção seletiva de sulfeto de hidrogênio

Country Status (12)

Country Link
US (2) US10493398B2 (pt)
EP (1) EP3356011B1 (pt)
JP (1) JP6843846B2 (pt)
KR (1) KR20180057629A (pt)
CN (1) CN108136318A (pt)
AR (1) AR106183A1 (pt)
BR (1) BR112018003738A2 (pt)
CA (1) CA3000274C (pt)
EA (1) EA036848B1 (pt)
TW (1) TW201728366A (pt)
WO (1) WO2017055040A1 (pt)
ZA (1) ZA201802684B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109069984B (zh) 2016-04-25 2021-09-03 巴斯夫欧洲公司 吗啉基受阻胺化合物在选择性除去硫化氢中的用途
US11000796B2 (en) 2016-08-01 2021-05-11 Basf Se Two-stage method for removing CO2 from synthesis gas
JP7097901B2 (ja) 2017-02-10 2022-07-08 ビーエーエスエフ ソシエタス・ヨーロピア 流体流から酸性ガスを除去する方法
WO2018210738A1 (en) 2017-05-15 2018-11-22 Basf Se Absorbent and process for selectively removing hydrogen sulfide
CN111744350A (zh) * 2019-03-29 2020-10-09 中国石油天然气股份有限公司 脱硫剂及其制备方法
WO2023018974A2 (en) * 2021-08-13 2023-02-16 The Regents Of The University Of California Absorbent compounds for capturing carbon dioxide
US20240109772A1 (en) 2022-09-16 2024-04-04 Saudi Arabian Oil Company Hydrogen Production by Sulfur Steam Reforming

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE737031C (de) 1940-03-30 1943-07-06 Koppers Gmbh Heinrich Verfahren zur nassen Gasreinigung
GB1309785A (en) * 1969-05-16 1973-03-14 Exxon Research Engineering Co Promotor for acid gas absorption
US3637345A (en) * 1969-05-16 1972-01-25 Exxon Research Engineering Co Process for removing acid gases from gascous method
US3551331A (en) * 1969-09-22 1970-12-29 Du Pont Reverse osmosis separations using a treated polyamide membrane
IT968526B (it) * 1971-10-01 1974-03-20 Exxon Research Engineering Co Metodo per eliminare gas acidi da miscele gassose
DE3236600A1 (de) 1982-10-02 1984-04-05 Basf Ag, 6700 Ludwigshafen Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und gegebenenfalls h(pfeil abwaerts)2(pfeil abwaerts)s aus erdgasen
DE3308088A1 (de) 1983-03-08 1984-09-27 Basf Ag, 6700 Ludwigshafen Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und/oder h(pfeil abwaerts)2(pfeil abwaerts)s aus gasen
US4553984A (en) 1984-03-06 1985-11-19 Basf Aktiengesellschaft Removal of CO2 and/or H2 S from gases
DE3408851A1 (de) 1984-03-10 1985-09-12 Basf Ag, 6700 Ludwigshafen Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und/oder h(pfeil abwaerts)2(pfeil abwaerts)s aus gasen
DE3445063A1 (de) 1984-12-11 1986-06-12 Basf Ag, 6700 Ludwigshafen Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und/oder h(pfeil abwaerts)2(pfeil abwaerts)s aus gasen
DE3518368A1 (de) 1985-05-22 1986-11-27 Basf Ag, 6700 Ludwigshafen Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und/oder h(pfeil abwaerts)2(pfeil abwaerts)s aus gasen
DE3828227A1 (de) 1988-08-19 1990-02-22 Basf Ag Verfahren zum entfernen von co(pfeil abwaerts)2(pfeil abwaerts) und gegebenenfalls h(pfeil abwaerts)2(pfeil abwaerts) aus gasen
JP4287915B2 (ja) * 1997-03-07 2009-07-01 三菱重工業株式会社 ガス中の硫化水素の処理方法及びその装置
DE19828977A1 (de) * 1998-06-29 1999-12-30 Basf Ag Verfahren zur Entfernung saurer Gasbestandteile aus Gasen
DE102004011427A1 (de) * 2004-03-09 2005-09-29 Basf Ag Absorptionsmittel mit verbesserter Oxidationsbeständigkeit und Verfahren zum Entsäuern von Fluidströmen
DE102005043142A1 (de) 2004-10-22 2006-04-27 Basf Ag Verfahren zum Entsäuern eines Fluidstroms und Absorptionsmittel hierfür
CA2750460C (en) 2009-02-02 2017-01-24 Basf Se Absorbent containing cyclic amines for removing acid gases
DE102009000543A1 (de) 2009-02-02 2010-08-12 Evonik Degussa Gmbh Verfahren, Absorptionsmedien und Vorrichtung zur Absorption von CO2 aus Gasmischungen
US8221712B2 (en) * 2009-05-12 2012-07-17 Basf Se Absorption medium for the selective removal of hydrogen sulfide from fluid streams
DE102011077377A1 (de) 2010-11-12 2012-05-16 Evonik Degussa Gmbh Verfahren zur Absorption von sauren Gasen aus Gasmischungen
US8895975B2 (en) * 2011-03-10 2014-11-25 Panasonic Corporation Photoelectric element
JP5659084B2 (ja) * 2011-05-30 2015-01-28 株式会社東芝 酸性ガス吸収剤、酸性ガス除去方法および酸性ガス除去装置
EP2532413A1 (de) 2011-06-10 2012-12-12 Evonik Degussa GmbH Verfahren zur Absorption von CO2 aus einer Gasmischung
EP2532412A1 (de) 2011-06-10 2012-12-12 Evonik Degussa GmbH Absorptionsmedium und Verfahren zur Absorption eines sauren Gases aus einer Gasmischung
EP2532414A1 (de) 2011-06-10 2012-12-12 Evonik Degussa GmbH Verfahren zur Absorption von CO2 aus einer Gasmischung
PH12014500533A1 (en) 2011-11-14 2014-04-21 Evonik Degussa Gmbh Method and device for the separation of acidic gases from a gas mixture
DE102012207509A1 (de) 2012-05-07 2013-11-07 Evonik Degussa Gmbh Verfahren zur Absorption von CO2 aus einer Gasmischung
WO2015017240A1 (en) * 2013-07-29 2015-02-05 Exxonmobil Research And Engineering Company Separation of hydrogen sulfide from natural gas
MX374426B (es) 2015-01-22 2025-03-06 Evonik Operations Gmbh Sintesis de compuestos de triacetonadiamina mediante procedimiento de aminacion reductora de triacetonadiamina y derivados de los mismos.

Also Published As

Publication number Publication date
CA3000274C (en) 2023-08-01
EP3356011A1 (de) 2018-08-08
US11130094B2 (en) 2021-09-28
EP3356011B1 (de) 2022-06-29
US10493398B2 (en) 2019-12-03
EA201890823A1 (ru) 2018-10-31
ZA201802684B (en) 2019-07-31
US20200030739A1 (en) 2020-01-30
JP2018532582A (ja) 2018-11-08
TW201728366A (zh) 2017-08-16
KR20180057629A (ko) 2018-05-30
CN108136318A (zh) 2018-06-08
CA3000274A1 (en) 2017-04-06
WO2017055040A1 (de) 2017-04-06
EA036848B1 (ru) 2020-12-28
US20180272271A1 (en) 2018-09-27
JP6843846B2 (ja) 2021-03-17
AR106183A1 (es) 2017-12-20

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