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1.发明专利
公开(公告)号：DE3460567D1
公开(公告)日：1986-10-02
申请号：DE3460567
申请日：1984-10-19
Applicant: BASF AG
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公开(公告)号：AT21685T
公开(公告)日：1986-09-15
申请号：AT84112672
申请日：1984-10-19
Applicant: BASF AG
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公开(公告)号：ES2062115T3
公开(公告)日：1994-12-16
申请号：ES90101132
申请日：1990-01-20
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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Patent Agency Ranking
公开(公告)号：DE3902006A1
公开(公告)日：1990-07-26
申请号：DE3902006
申请日：1989-01-25
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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5.发明专利
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
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.
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公开(公告)号：SK30490A3
公开(公告)日：1998-11-04
申请号：SK30490
申请日：1990-01-22
Applicant: BASF AG
Inventor： KAIBEL GERD , SCHLOEMER KARL , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：DE59005224D1
公开(公告)日：1994-05-11
申请号：DE59005224
申请日：1990-01-20
Applicant: BASF AG
Inventor： KAIBEL GERD DR , SCHLOEMER KARL DR , MAYER HANS-HORST
Abstract: Process for the separation by distillation of small quantities of a middle-boiling fraction from a liquid mixture by means of a distillation column (main column), comprising a rectification and a stripping component, where the liquid mixture contains relatively large amounts of higher- and lower-boiling constituents, and the rectification component being connected to the upper end and the stripping component to the lower end of a second distillation column (side column), and the middle-boiling fraction being removed in vapour or liquid form from its middle region, the concentration of the middle-boiling fraction in the liquid mixture being less than 2%, preferably less than 0.1%, and the amount of vapour introduced into the side column at its lower end from the main column being 1 to 20%, preferably 3 to 10%, relative to the amount of vapour in the main column at the relevant point.
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公开(公告)号：DE3339157A1
公开(公告)日：1985-05-09
申请号：DE3339157
申请日：1983-10-28
Applicant: BASF AG
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