公开(公告)号：BR7500922A

公开(公告)日：1975-12-02

申请号：BR7500922

申请日：1975-02-14

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HOHENSCHUTZ H ,  HESSE D ,  STROHMEYER M

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

Abstract: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

公开(公告)号：NO750461A

公开(公告)日：1975-08-18

申请号：NO750461

申请日：1975-02-12

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HESSE D ,  STROHMEYER M ,  HOHENSCHUTZ H

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00 ,  C07C

CPC classification number: C07C51/44 ,  C07C53/02

公开(公告)号：DK54275A

公开(公告)日：1975-10-13

申请号：DK54275

申请日：1975-02-14

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HESSE D ,  STROHMEYER M ,  HOHENSCHUTZ H

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

Abstract: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

公开(公告)号：SE7501571L

公开(公告)日：1975-08-18

申请号：SE7501571

申请日：1975-02-12

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HESSE D ,  STROHMEYER M ,  HOHENSCHUTZ H

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

Abstract: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

公开(公告)号：SE7501571A

公开(公告)日：1975-08-18

申请号：SE7501571

申请日：1975-02-12

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HESSE D ,  STROHMEYER M ,  HOHENSCHUTZ H

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00

CPC classification number: C07C51/44 ,  C07C53/02

公开(公告)号：NO750461L

公开(公告)日：1975-08-18

申请号：NO750461

申请日：1975-02-12

Applicant: BASF AG

Inventor： RAUCH K ,  KIEFER H ,  HESSE D ,  STROHMEYER M ,  HOHENSCHUTZ H

IPC: C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00 ,  C07C

Abstract: Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

公开(公告)号：SE352067B

公开(公告)日：1972-12-18

申请号：SE1734868

申请日：1968-12-18

Applicant: BASF AG

Inventor： KERBER H ,  HOHENSCHUTZ H ,  RAUCH K ,  SCHELDMEIR W

IPC: B01D3/14 ,  C07C31/12

公开(公告)号：SE333726B

公开(公告)日：1971-03-29

申请号：SE1380267

申请日：1967-10-09

Applicant: BASF AG

Inventor： RAUCH K ,  SCHEIDMEIR W

IPC: C07C29/80 ,  C07C29/82 ,  C07C31/12