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    REMOVAL OF CO2 AND/OR H2S FROM GASES
    41.
    发明专利
    REMOVAL OF CO2 AND/OR H2S FROM GASES 未知

    公开(公告)号：AU4050285A

    公开(公告)日：1985-10-03

    申请号：AU4050285

    申请日：1985-03-28

    Applicant: BASF AG

    Inventor： VOLKAMER KLAUS ,  HEFNER WERNER ,  WAGNER ECKHART ,  WAGNER ULRICH

    IPC: B01D53/14

    Abstract: 1. A process for removing CO2 and/or H2 S from a gas containing CO2 and/or H2 S by washing the gas with an aqueous alkanolamine-containing absorption liquid and subsequently regenerating the latter, wherein the aqueous absorption liquid used contains from 3 to 60% by weight of methyldiethanolamine and from 1 to 50% by weight of monoethanolamine, processes with two absorption stages arranged in series, in which regeneration of the laden absorption liquid is carried out using two flash stages and a stripping zone, to the extent they utilize an absorption liquid containing from 0.05 to 1 mole of monoethanolamine per litre, being excluded.

    42.
    发明专利
    未知

    公开(公告)号：PT80177A

    公开(公告)日：1985-04-01

    申请号：PT8017785

    申请日：1985-03-27

    Applicant: BASF AG

    Inventor： VOLKAMER KLAUS ,  HEFNER WERNER ,  WAGNER ECKHART ,  WAGNER ULRICH

    IPC: B01D53/14 ,  B01D47/00

    Abstract: 1. A process for removing CO2 and/or H2 S from a gas containing CO2 and/or H2 S by washing the gas with an aqueous alkanolamine-containing absorption liquid and subsequently regenerating the latter, wherein the aqueous absorption liquid used contains from 3 to 60% by weight of methyldiethanolamine and from 1 to 50% by weight of monoethanolamine, processes with two absorption stages arranged in series, in which regeneration of the laden absorption liquid is carried out using two flash stages and a stripping zone, to the extent they utilize an absorption liquid containing from 0.05 to 1 mole of monoethanolamine per litre, being excluded.

    REMOVAL OF CONDENSABLE ALIPHATIC HYDROCARBONS AND ACIDIC GASES FROM NATURAL GAS
    43.
    发明专利
    REMOVAL OF CONDENSABLE ALIPHATIC HYDROCARBONS AND ACIDIC GASES FROM NATURAL GAS 未知

    公开(公告)号：CA1178789A

    公开(公告)日：1984-12-04

    申请号：CA398578

    申请日：1982-03-17

    Applicant: BASF AG

    Inventor： WAGNER ECKHART ,  WAGNER ULRICH ,  VOLKAMER KLAUS ,  VODRAZKA WOLFGANG

    IPC: B01D53/14 ,  C07C7/11 ,  C07C9/04 ,  C10G5/04

    Abstract: A process for removing condensable aliphatic hydrocarbons and acidic gases such as H2S, CO2 and COS from natural gas containing these, wherein the natural gas is initially treated with polyethylene glycol dialkyl ethers, as the solvent, in a first absorption stage to effect absorption of the condensable aliphatic hydrocarbons; the natural gas drawn off from the first absorption stage is then treated with polyethylene glycol dialkyl ethers, as the solvent, under superatmospheric pressure in a second absorption stage, the acidic gases being completely or partly absorbed; the solvent charged with the condensable aliphatic hydrocarbons which is obtained from the first absorption stage is treated with water in an extraction stage, to form a hydrocarbon phase containing the condensable aliphatic hydrocarbons and an aqueous dialkyl ether phase, and the hydrocarbon phase is separated from the aqueous dialkyl ether phase. The solvent charged with acid gases which is obtained from the second absorption stage is regenerated by expansion and/or stripping in a regeneration stage and the regenerated solvent is recycled to the absorption.

    44.
    发明专利
    未知

    公开(公告)号：NO840862L

    公开(公告)日：1984-09-10

    申请号：NO840862

    申请日：1984-03-07

    Applicant: BASF AG

    Inventor： WAGNER ECKHART ,  VOLKAMER KALUS ,  HEFNER WERNER ,  WAGNER ULRICH

    IPC: C10L3/10 ,  B01D53/14 ,  B01D53/34 ,  C07C7/11 ,  C10K1/14 ,  B01D

    Abstract: CO2 and/or H2S are removed from gases which contain CO2 and/or H2S by means of an aqueous absorption liquid containing an alkanolamine, by a process wherein the said gas is treated, in an absorption stage, at from 40 DEG to 100 DEG C., with an aqueous absorption liquid containing from 20 to 70% by weight of methyldiethanolamine, the treated gas is taken off at the top of the absorption stage, the aqueous absorption liquid laden with CO2 and/or H2S is taken off at the bottom of this stage and is regenerated by being let down in two or more flash stages, and the final flash stage is operated under reduced pressure and the regenerated absorption liquid is recycled to the absorption stage.

    45.
    发明专利
    未知

    公开(公告)号：NO149773C

    公开(公告)日：1984-06-20

    申请号：NO781842

    申请日：1978-05-26

    Applicant: BASF AG

    Inventor： STOCKBURGER DIETER ,  VOLKAMER KLAUS ,  BENDER DETLEF ,  SCHNEIDER KLAUS-JUERGEN ,  SCHWENTKER HARALD ,  WAGNER ULRICH ,  WEITZ HANS-MARTIN

    IPC: B01D3/40 ,  C07C1/00 ,  C07C7/08 ,  C07C9/00 ,  C07C11/00 ,  C07C11/167 ,  C07C67/00 ,  C07C11/16

    Abstract: A process for separating, by means of a selective solvent, a mixture of C4-hydrocarbons which contains some hydrocarbons which are more soluble in the selective solvent and some which are less soluble therein, in which process the hydrocarbon mixture is separated, in an extractive distillation zone, into a top product which contains the less soluble hydrocarbons and an extract which contains the more soluble hydrocarbons and the selective solvent, the extract, taken off as the bottom product, is subjected to a flash evaporation and the resulting vapor component of the extract is recycled to the extractive distillation zone while the liquid phase remaining after the flash evaporation is fed to a solvent recovery zone, in which the liquid phase obtained from the flash evaporation is separated into a product containing the hydrocarbons and, as the bottom product, the selective solvent which has been freed from the hydrocarbons, the resulting selective solvent is recycled to the extractive distillation zone and the product which is obtained from the solvent recovery zone and contains the hydrocarbons is partially or completely recycled to the extractive distillation zone, after increasing the pressure in a compression zone, in which process the extract taken off the extractive distillation zone is brought, prior to the flash evaporation to a higher pressure than the pressure in the extractive distillation zone and thereafter the extract which is under this higher pressure is heated, in a heat exchange zone, by indirect heat exchange with the selective solvent obtained as the bottom product from the solvent recovery zone, and the heated extract is subsequently let down, in the flash evaporation, to a pressure which is at least equal to the pressure in the extractive distillation zone and is higher than the pressure in the solvent recovery zone.

    SIMULTANEOUS REMOVAL OF WATER AND HYDROGEN SULFIDE FROM GASES
    48.
    发明专利
    SIMULTANEOUS REMOVAL OF WATER AND HYDROGEN SULFIDE FROM GASES 未知

    公开(公告)号：CA1150035A

    公开(公告)日：1983-07-19

    申请号：CA352961

    申请日：1980-05-29

    Applicant: BASF AG

    Inventor： VOLKAMER KLAUS ,  WAGNER ULRICH ,  WAGNER ECKHART

    IPC: B01D53/52 ,  B01D53/14 ,  B01D53/26 ,  B01D53/77 ,  C10L3/10

    Abstract: O.Z. 0050/033,898 A process for simultaneously removing water and hydrogen sulfide from gases containing both of these by treating the gases, in an absorption zone under superatmospheric pressure, with polyethylene glycol dialkyl ethers as a solvent, stripping the hydrogen sulfide from the loaded solvent, obtained from the absorption zone, in a desorption zone, removing the water, taken up in the absorption zone, from the solvent and recycling the regenerated solvent to the absorption zone, wherein the solvent additionally contains from 0.01 to 20% by weight, based on the solvent mixture, of an alcohol or ether boiling in the range from 50 to 140.degree.C.

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