ABSORBENT FOR THE SELECTIVE REMOVAL OF HYDROGEN SULFIDE

    公开(公告)号:ZA201802683B

    公开(公告)日:2019-07-31

    申请号:ZA201802683

    申请日:2018-04-23

    Applicant: BASF SE

    Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprises an aqueous solution comprising a) a tertiary amine; b) an aminic pH promoter selected from the compounds mentioned in the description; where the molar ratio of b) to a) is in the range from 0.05 to 1.0; and c) an acid having a pKA of less than 6 in such an amount that the pH of the aqueous solution measured at 120° C. is 7.9 to less than 8.8. Also described is a process for removing acidic gases from a fluid stream, in which the fluid stream is contacted with the absorbent. The absorbent is notable for a low regeneration energy.

    ABSORBENT FOR THE SELECTIVE REMOVAL OF HYDROGEN SULFIDE

    公开(公告)号:SG11201801360PA

    公开(公告)日:2018-04-27

    申请号:SG11201801360P

    申请日:2016-09-28

    Applicant: BASF SE

    Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprises an aqueous solution comprising a) a tertiary amine; b) an aminic pH promoter selected from the compounds mentioned in the description; where the molar ratio of b) to a) is in the range from 0.05 to 1.0; and c) an acid having a pKA of less than 6 in such an amount that the pH of the aqueous solution measured at 120° C. is 7.9 to less than 8.8. Also described is a process for removing acidic gases from a fluid stream, in which the fluid stream is contacted with the absorbent. The absorbent is notable for a low regeneration energy.

    Retención de aminas en la separación de gases ácidos por medio de agentes de absorción de amina

    公开(公告)号:ES2543313T3

    公开(公告)日:2015-08-18

    申请号:ES12712643

    申请日:2012-03-30

    Applicant: BASF SE

    Abstract: Procedimiento para la separación de gases ácidos de un flujo de fluido, en el que a) se trata el flujo de fluido en una zona de absorción con un agente de absorción que comprende una solución acuosa al menos de una amina, b) se conduce el flujo de fluido tratado por al menos dos zonas de lavado y se trata con una fase acuosa no ácida para transferir amina arrastrada y/o productos de descomposición de amina arrastrados al menos parcialmente a la fase acuosa, reciclándose la fase acuosa a través de al menos una zona de lavado y conduciéndose la fase acuosa sin reciclado por al menos una zona de lavado, en el que una primera zona de lavado está dispuesta por encima de la zona de absorción y una segunda zona de lavado está dispuesta por encima de la primera zona de lavado, en el que se recicla la fase acuosa a través de la segunda zona de lavado, se conduce un flujo parcial de la fase acuosa reciclada a través de la segunda zona de lavado por la primera zona de lavado y se combina la fase acuosa que sale de la primera zona de lavado con el agente de absorción en la zona de absorción y se enfría la fase acuosa reciclada a través de la segunda zona de lavado.

    REMOVAL OF ACIDIC GASES BY MEANS OF AN ABSORBENT COMPRISING A STRIPPING AID

    公开(公告)号:CA2764255A1

    公开(公告)日:2010-12-29

    申请号:CA2764255

    申请日:2010-06-21

    Applicant: BASF SE

    Abstract: A process for removing acidic gases from a fluid stream, in which a) the fluid stream is treated with an absorption liquid which comprises at least one amine, a stripping aid and water, said stripping aid being selected from water-miscible liquids whose boiling temperature at standard pressure is lower than that of water, b) the treated fluid stream is treated with a liquid aqueous phase in order to transfer entrained stripping aid at least partly to the aqueous phase, c) the laden aqueous phase is heated in order to at least partly drive out the stripping aid, and d) the aqueous phase thus regenerated is cooled and recycled at least partly into step b). The stripping aid promotes the regeneration of the absorbent by stripping. Emissions of the stripping aid via the treated fluid stream are avoided by washing the treated fluid stream with a liquid aqueous phase.

    REMOVAL OF CARBON DIOXIDE FROM A FLUID FLOW

    公开(公告)号:CA2959095C

    公开(公告)日:2022-08-09

    申请号:CA2959095

    申请日:2015-08-20

    Applicant: BASF SE

    Abstract: Disclosed is an absorbent for removing carbon dioxide from a fluid flow, said absorbent comprising an aqueous solution of: a) an amine of general formula (I), wherein R1, R2 and R3 are selected independently from one another from C1-4-alkyl and C1-4-hydroxyalkyl, R4 in each case is selected independently from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, R5 in each case is selected independently from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, X stands for OH or NH(CR1R2R3), m stands for 2, 3, 4 or 5, n stands for 2, 3, 4 or 5, and o stands for 0 or 1; and b) at least one activator selected from 5-, 6-, or 7-membered heterocycles with an NH group in the ring and one or to other heteroatoms in the ring, which are selected from nitrogen and oxygen. The absorbent enables a rapid absorption of carbon dioxide from fluid flows.

    CYCLIC AMINE FOR SELECTIVELY REMOVING HYDROGEN SULPHIDE

    公开(公告)号:ZA201802684B

    公开(公告)日:2019-07-31

    申请号:ZA201802684

    申请日:2018-04-23

    Applicant: BASF SE

    Abstract: The use of an amine of the formula (I)in which the R1 to R5 radicals are each as defined in the description, and an absorbent and a process for removing acidic gases from a fluid stream, especially for selectively removing hydrogen sulfide over carbon dioxide. The invention also relates to particular amines suitable for selective removal of hydrogen sulfide. Absorbents based on amines of the formula (I) have high selectivity, high loading capacity and good regeneration capacity.

    АБСОРБЕНТ ДЛЯ СЕЛЕКТИВНОГО ВИДАЛЕННЯ СІРКОВОДНЮ ІЗ ФЛЮЇДНОГО ПОТОКУ

    公开(公告)号:UA118806C2

    公开(公告)日:2019-03-11

    申请号:UAA201702785

    申请日:2015-08-20

    Applicant: BASF SE

    Abstract: Абсорбентдляселективноговидаленнясірководнюізфлюїдногопотокуміститьводнийрозчин a) третинногоаміну, b) стеричноутрудненоговторинногоамінузагальноїформули (І) ,(І) вякій R1 і R2 вкожномувипадкунезалежноодинвідодноговибраніз-поміжС1-4-алкілуі С1-4-гідроксіалкілу; вкожномувипадкунезалежноодинвідодноговибраніз-поміжС1-4-алкілуі С1-4-гідроксіалкілу; R3, R4, R5 і R6 вкожномувипадкунезалежноодинвідодноговибраніз-поміжводню, С1-4-алкілуі С1-4-гідроксіалкілу, іззастереженням, щопринаймніодинзалишок R4 і/або R5 біляатомавуглецю, якийбезпосередньоприєднанийдоатомаазоту, означаєС1-4-алкілабоС1-4-гідроксіалкіл, якщо R3 означаєводень; хі уозначаютьцілічиславід 2 до 4, a z означаєцілечисловід 1 до 4; причомупричомумолярнеспіввідношенняміж b) таа) становитьвід 0,3 до 0,7, іс) кислотув кількості, розрахованійякеквівалентнейтралізаціївідносноздатнихдопротонуванняатомівазотув а) і b), від 1,0 до 9,0 %. ПереважнимаміномформулиІ є 2-(2-трет-бутиламіноетоксі)етанол. Абсорбентдозволяєвстановлювативизначенуселективністьвідносно H2S підтиском, якийзазвичайпануєприобробціприродногогазу.

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