公开(公告)号：CA1235131A

公开(公告)日：1988-04-12

申请号：CA490421

申请日：1985-09-11

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

Abstract: In apparatuses for the preparation of phthalic anhydride and/or maleic anhydride by catalytic oxidation of naphthalene or o-xylene with air, reduced pressure is generated using liquid-jet pumps, and wash liquid is removed from the exit gas washer as a pump fluid for the liquid-jet pumps and is subsequently recycled to the exit gas washer.

公开(公告)号：FI83778B

公开(公告)日：1991-05-15

申请号：FI853437

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

公开(公告)号：DE3566669D1

公开(公告)日：1989-01-12

申请号：DE3566669

申请日：1985-09-07

Applicant: BASF AG

Inventor： BLOCK ULRICH DR ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

公开(公告)号：DE3433401A1

公开(公告)日：1986-03-20

申请号：DE3433401

申请日：1984-09-12

Applicant: BASF AG

Inventor： BLOCK ULRICH DR ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

公开(公告)号：FI853437L

公开(公告)日：1986-03-13

申请号：FI853437

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02 ,  C07D

公开(公告)号：DE3160736D1

公开(公告)日：1983-09-15

申请号：DE3160736

申请日：1981-02-19

Applicant: BASF AG

Inventor： MUFF WOLF

IPC: C07D307/89 ,  A61K31/34 ,  A61K31/341 ,  A61K31/343 ,  A61P31/12 ,  B01J19/00 ,  C07C51/215 ,  C07C51/265 ,  C07C51/43 ,  C07D307/60

公开(公告)号：FI83778C

公开(公告)日：1991-08-26

申请号：FI853437

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

公开(公告)号：AT39116T

公开(公告)日：1988-12-15

申请号：AT85111341

申请日：1985-09-07

Applicant: BASF AG

Inventor： BLOCK ULRICH DR ,  MUFF WOLF ,  NIXDORF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02

公开(公告)号：FI853437A0

公开(公告)日：1985-09-09

申请号：FI853437

申请日：1985-09-09

Applicant: BASF AG

Inventor： BLOCK ULRICH ,  MUFF WOLF ,  NIXDROF KLAUS ,  WAGNER JOACHIM

IPC: C07D307/60 ,  B01J3/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89 ,  F04F5/02 ,  C07D

公开(公告)号：CA1189685A

公开(公告)日：1985-07-02

申请号：CA370705

申请日：1981-02-12

Applicant: BASF AG

Inventor： MUFF WOLF

IPC: C07D307/89 ,  A61K31/34 ,  A61K31/341 ,  A61K31/343 ,  A61P31/12 ,  B01J19/00 ,  C07C51/215 ,  C07C51/265 ,  C07C51/43 ,  C07D307/60

Abstract: In installations for the production of phthalic anhydride, the reaction product is precipitated in a solid form on heat exchange surfaces of separators, and is subsequently melted off again, by alternately cooling and heating the separators. The arrangement employed, according to the invention, for transferring the heat and for levelling out the temperature profiles (in which, in the heating phases, there is a peak demand for heating steam, which impedes the useful generation of steam by the exothermic reaction), comprises a heat transfer system consisting of three circuits at different temperatures. A storage circuit (hot oil circuit) at a higher temperature is superposed on the heating circuit operating at a predetermined temperature. Using the hot oil circuit, the separators are provided, during the heating phase, with the heat required to melt off the reaction product. This superposition of 3 circuits at different temperatures produces a levelling of the steam requirement and hence allows more effective utilization of the excess steam.