公开(公告)号：NO155444C

公开(公告)日：1987-04-01

申请号：NO821058

申请日：1982-03-30

Applicant: BASF AG

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

IPC: B01D53/14 ,  C07C7/11 ,  C07C9/04 ,  C10G5/04 ,  C10K1/16

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.

公开(公告)号：CA1218030A

公开(公告)日：1987-02-17

申请号：CA465906

申请日：1984-10-19

Applicant: BASF AG

Inventor： LINDNER ALFRED ,  WAGNER ULRICH ,  VOLKAMER KLAUS ,  REBAFKA WALTER

IPC: C07B61/00 ,  C07C1/00 ,  C07C7/08 ,  C07C7/10 ,  C07C7/163 ,  C07C11/18 ,  C07C67/00

Abstract: Isoprene is recovered from a C5-hydrocarbon mixture containing isoprene, penta-1,3-diene and cyclopentadiene by separating the said mixture by liquid-liquid extraction or extractive distillation with the aid of a selective solvent, in combination with a distillation upstream or downstream from the liquidliquid extraction or extractive distillation, by a method in which a stream containing penta-1,3-diene and cyclopentadiene is separated off in the upstream or downstream distillation and is catalytically hydrogenated, and the hydrogenated stream is fed to the upper part of the liquid-liquid extraction or extractive distillation.

公开(公告)号：CA1217449A

公开(公告)日：1987-02-03

申请号：CA466304

申请日：1984-10-25

Applicant: BASF AG

Inventor： LINDNER ALFRED ,  KAIBEL GERD ,  WAGNER ULRICH ,  VOLKAMER KLAUS ,  SCHNEIDER KLAUS-JUERGEN ,  WEIS JOSEPHA ,  MAYER HANS-HORST

IPC: B01D3/40 ,  C07C1/00 ,  C07C7/08 ,  C07C11/02 ,  C07C11/12 ,  C07C67/00

Abstract: A conjugated diolefin and/or an olefin or olefin mixture are recovered from a C4- or C5-hydrocarbon mixture which contains the conjugated diolefin and/or the olefin or olefins, hydrocarbons which are more sparingly soluble in the selective solvent than are the said diolefin and/or olefin or olefins, and hydrocarbons which are more readily soluble in the said solvent than these are, by a process in which the C4- or C5hydrocarbon mixture is separated, by means of extractive distillation, into a distillate containing the more sparingly soluble hydrocarbons, a product stream containing the conjugated diolefin and/or the olefin or olefin mixture, and a stream containing the more readily soluble hydrocarbons.

公开(公告)号：PT80177B

公开(公告)日：1987-01-15

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 ,  C10K1/14

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.

公开(公告)号：CA1214316A

公开(公告)日：1986-11-25

申请号：CA437751

申请日：1983-09-28

Applicant: BASF AG

Inventor： WAGNER ECKHART ,  VOLKAMER KLAUS ,  WAGNER ULRICH

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

Abstract: CO2 and, where present, H2S are removed from natural gases which contain CO2 or CO2 and H2S, by a process in which the said natural gases are treated, in an absorption stage at from 40 to 100.degree.C, with an aqueous absorption liquid containing from 20 to 70% by weight of methyldiethanolamine. The treated natural gases are taken off at the top of the absorption stage. The aqueous absorption liquid laden with CO2 and, where present, H2S is taken off at the bottom of the absorption stage and then regenerated in one or more flash stages without using any stripping column. Finally the regenerated absorption liquid is recycled to the absorption stage.

公开(公告)号：ZA8502332B

公开(公告)日：1985-12-24

申请号：ZA8502332

申请日：1985-03-28

Applicant: BASF AG

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

IPC: C10L3/10 ,  B01D53/14 ,  B01D53/40 ,  B01D53/77 ,  C10K1/14 ,  B01D ,  B01J ,  C01B ,  C10K ,  C10L

CPC classification number: B01D53/1493 ,  Y02C10/06

公开(公告)号：NO851263A

公开(公告)日：1985-09-30

申请号：NO851263

申请日：1985-03-28

Applicant: BASF AG

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

IPC: B01D53/14 ,  B01D

CPC classification number: B01D53/1493 ,  Y02C10/06

公开(公告)号：NO850923A

公开(公告)日：1985-09-11

申请号：NO850923

申请日：1985-03-08

Applicant: BASF AG

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

IPC: B01D53/14 ,  B01D53/40 ,  B01D53/77 ,  C01B3/52 ,  C10K1/14 ,  B01D

CPC classification number: B01D53/1468 ,  B01D53/1406 ,  C01B3/52 ,  C01B2203/0415 ,  C01B2203/0475 ,  C01B2203/0495 ,  C10K1/143 ,  Y02C10/06 ,  Y02P20/152

公开(公告)号：NO833566A

公开(公告)日：1984-04-03

申请号：NO833566

申请日：1983-09-30

Applicant: BASF AG

Inventor： VOLKAMER KLAUS ,  WAGNER ECKHART ,  WAGNER ULRICH

IPC: B01D53/14 ,  B01D53/40 ,  B01D53/52 ,  B01D53/77 ,  C07C7/11 ,  C10K1/12 ,  C10K1/14 ,  B01D

CPC classification number: C10K1/14 ,  B01D53/1462 ,  C07C7/11 ,  Y02C10/06 ,  Y02P20/152 ,  C07C9/04

公开(公告)号：NO149773B

公开(公告)日：1984-03-12

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.