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公开(公告)号：DE3049213A1
公开(公告)日：1982-07-29
申请号：DE3049213
申请日：1980-12-27
Applicant: BASF AG
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公开(公告)号：DE2910675A1
公开(公告)日：1980-10-02
申请号：DE2910675
申请日：1979-03-19
Applicant: BASF AG
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公开(公告)号：DE2923012A1
公开(公告)日：1980-12-18
申请号：DE2923012
申请日：1979-06-07
Applicant: BASF AG
Abstract: 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 DEG to 140 DEG C.
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公开(公告)号：DE2802199A1
公开(公告)日：1979-07-26
申请号：DE2802199
申请日：1978-01-19
Applicant: BASF AG
Inventor： BRUNNER ERWIN DIPL PHYS DR , SCHUBERT ECKART DIPL CHEM DR , LINDNER ALFRED DIPL CHEM DR , MERGER FRANZ DIPL CHEM DR , VOLKAMER KLAUS DIPL CHEM DR , STROHMEYER MAX DIPL CHEM DR , SANDROCK GERHARD DIPL CHEM DR
Abstract: Isobutene is extracted from 4C hyrocarbon mixts. by reaction with isobutanol in presence of an acid condensing agent, sepn. of the tert. ether formed and decomposition at elevated temp. in presence of an acid catalyst. Used for treatment of 4C fractions from ethylene plants or butane/butene dehydrogenation plants to obtain isobutene-free raffinates for prodn. of sec. butanol, MEK, butene-1, octenene or maleic anhydride. No previous extn. of butadiene from the 4C fraction is required. The isobutanol forms no azeotrope with the 4C hydocarbons (as occurs by use of methanol), so that sepn. of the ether by simple fractionation gives an almost alcohol-free 4C raffinate without water-washing, contg. 50 (20) esp. =5 ppm isobutanol. Isobutene is obtd. in high purity and yield.
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公开(公告)号：DE2724365A1
公开(公告)日：1978-11-30
申请号：DE2724365
申请日：1977-05-28
Applicant: BASF AG
Inventor： STOCKBURGER DIETER DIPL ING DR , VOLKAMER KLAUS DIPL CHEM DR , BENDER DETLEF DIPL ING DR , SCHNEIDER KLAUS-JUERGEN DIPL I , SCHWENTKER HARALD DIPL CHEM DR , WAGNER ULRICH DIPL PHYS DR , WEITZ HANS-MARTIN DIPL CHEM DR
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.
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Patent Agency Ranking
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公开(公告)号：DE2823983A1
公开(公告)日：1979-12-06
申请号：DE2823983
申请日：1978-06-01
Applicant: BASF AG
Abstract: A process for isolating 1,3-butadiene by means of a selective solvent from a C4-hydrocarbon mixture which contains 1,3-butadiene, propyne, hydrocarbons which are more soluble than 1,3-butadiene in the selective solvent and hydrocarbons which are less soluble than 1,3-butadiene in the selective solvent, wherein the C4-hydrocarbon mixture is separated, using one or more extractive distillation zones, into a distillate containing the less soluble hydrocarbons, a stream of 1,3-butadiene and a stream containing the more soluble hydrocarbons, and the propyne is separated off either by distillation of the C4-hydrocarbon mixture in a distillation zone upstream of the extractive distillation zone or zones or by distillation of the stream of 1,3-butadiene, obtained from the extractive distillation zone or zones, in a downstream distillation zone, giving a stream of hydrocarbons containing propyne and 1,3-butadiene, which stream is fed to an additional distillation zone, while at the same time a second stream of liquid or gaseous hydrocarbons is fed to the additional distillation zone, and the bottom product from the additional distillation zone is recycled to the extractive distillation.
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8.发明专利
公开(公告)号：DE2538036A1
公开(公告)日：1977-03-17
申请号：DE2538036
申请日：1975-08-27
Applicant: BASF AG
Inventor： MERGER FRANZ DIPL CHEM DR , VOLKAMER KLAUS DIPL CHEM DR , NESTLER GERHARD DIPL CHEM DR , SCHUBERT ECKART DIPL CHEM DR
IPC: C07C31/12
Abstract: Tert isobutanol is made by reacting isobutene with water in the presence of a strongly acid cation exchanger and an anion exchanger. Pref. the ion exchangers are in powdered and/or macroporous granulated form. Suitable cation exchangers are synthetic resin materials contg. SO3- gps., esp. ring sulphonated cross linked styrene-divinylbenzene copolymers. The anion exchangers may be of the pyridine type or those contg. -NR2, =NR or -N gps. where R is H or 1-5C alkyl gp. The presence of the anion exchanger gives higher rates of hydration than when using the cation exchanger alone. In processes employing powdered ion exchangers, the presence of the anion exchanger facilitates removal of the catalyst by filtration. Dehydration of the tert. butanol prod. gives high purity isobutene suitable for the prodn. of isobutene polymers. The wt. ratio anion- to cation exchanger is, e.g. 0.05:1 to 2:1, esp. 0.1:1 to 0.5:1. Hydration of the butene is carried out, e.g. at 20-120 degrees C, esp. 30-100 degrees C, and pref. at pressures of 1.01-30 bar with a wt. ratio water to isobutene of 0.3:1 to 30:1, esp. 1:1 to 15:1.
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公开(公告)号：DE3112661A1
公开(公告)日：1982-10-14
申请号：DE3112661
申请日：1981-03-31
Applicant: BASF AG
Inventor： WAGNER ECKHART DIPL CHEM DR , WAGNER ULRICH DIPL PHYS DR , VOLKAMER KLAUS DIPL CHEM DR , VODRAZKA WOLFGANG DIPL CHEM DR
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.
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公开(公告)号：DE2908426A1
公开(公告)日：1980-09-25
申请号：DE2908426
申请日：1979-03-05
Applicant: BASF AG
Inventor： LINDNER ALFRED DIPL CHEM DR , MERGER FRANZ DIPL CHEM DR , VOLKAMER KLAUS DIPL CHEM DR , WAGNER ULRICH DR , BRUNNER ERWIN DR , SANDROCK GERHARD DIPL CHEM DR , STROHMEYER MAX DIPL CHEM DR
IPC: C07C1/00 , C07C7/148 , C07C11/09 , C07C41/01 , C07C41/06 , C07C41/44 , C07C43/04 , C07C67/00 , C07C11/08 , C07C7/01
Abstract: A process for isolating isobutene from C4-hydrocarbon mixtures containing isobutene by reacting the mixture with a primary alcohol in the presence of an acid condensing agent, to form the tertiary ether, separating off the unconverted hydrocarbons and decomposing the tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C3- or C4-alcohol is used and the temperature at which the reaction mixture leaves the etherification stage, in which the tertiary ether is formed, is lower than the mean temperature in the etherification stage.
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