公开(公告)号：DE3026538A1

公开(公告)日：1982-02-11

申请号：DE3026538

申请日：1980-07-12

Applicant: BASF AG

Inventor： FUCHS HUGO DIPL CHEM DR ,  BRAND UWE ING GRAD ,  ELIASCH ERNST DIPL CHEM DR ,  FROMMER ELMAR DIPL CHEM DR

IPC: C07D201/16

Abstract: In a process for continuously extracting caprolactam from an aqueous solution, containing caprolactam and its oligomers, with organic solvents, by introducing the aqueous solution into the upper part of an extraction zone and organic solvents into the lower part, and taking off a solution of caprolactam in organic solvents at the upper end and an aqueous phase containing caprolactam oligomers at the lower end, the improvement that liquid aromatic hydrocarbons are used and the extraction is carried out at a pH of from 2.0 to 6.0.

公开(公告)号：DE2916415A1

公开(公告)日：1980-11-06

申请号：DE2916415

申请日：1979-04-23

Applicant: BASF AG

Inventor： BRAND UWE ING GRAD ,  FUCHS HUGO DIPL CHEM DR ,  SCHMITZ RUEDIGER DIPL ING

IPC: C07D201/04 ,  C07D201/16 ,  C07D201/06

公开(公告)号：DE2915360A1

公开(公告)日：1980-10-30

申请号：DE2915360

申请日：1979-04-14

Applicant: BASF AG

Inventor： WERTHER JOACHIM DIPL ING DR ,  FUCHS HUGO DIPL CHEM DR ,  BRAND UWE ING GRAD ,  FAULHABER FRIEDR RICHARD MUTTE

IPC: C07B61/00 ,  C07D201/04

Abstract: A process for the preparation of caprolactam wherein, in a first stage, cyclohexanone-oxime is vaporized, in the presence of inert gases, by bringing it into contact with a fluidized bed of inert solid particles at from 150 DEG to 250 DEG C., and the mixture of cyclohexanone-oxime vapor and inert gases is passed into a second stage, where the cyclohexanone-oxime is rearranged to caprolactam at from 230 DEG to 450 DEG C. over a supported catalyst, containing boron trioxide, in a fluidized bed.

公开(公告)号：DE2844880A1

公开(公告)日：1980-04-30

申请号：DE2844880

申请日：1978-10-14

Applicant: BASF AG

Inventor： FUCHS HUGO DIPL CHEM DR ,  BRAND UWE ING GRAD ,  HORN PETER DIPL CHEM DR

IPC: B01J21/02 ,  B01J21/20 ,  C07D201/04

Abstract: In a process for the preparation of epsilon -caprolactam by catalytic rearrangement of cyclohexanone-oxime in the gas phase at from 230 DEG to 450 DEG C. over a supported catalyst, containing boron trioxide, in a fluidized bed, wherein the catalyst is removed from the fluidized bed at the rate at which it becomes spent and is treated, in a fluidized state, with gases containing molecular oxygen at from 600 DEG to 900 DEG C., after which boron trioxide or boric acid is added to the fluidized catalyst, at from 300 DEG to 900 DEG C., before the catalyst is returned to the fluidized bed, the improvement that boron trioxide or boric acid of particle size from 0.05 to 1.5 mm is fed to the fluidized catalyst at one or more points.

公开(公告)号：DE2837793A1

公开(公告)日：1980-03-13

申请号：DE2837793

申请日：1978-08-30

Applicant: BASF AG

Inventor： FUCHS HUGO DIPL CHEM DR ,  BRAND UWE ING GRAD ,  GROSSKINSKY OTTO-ALFRED DIPL C ,  SCHMITZ RUEDIGER DIPL ING

IPC: C07D201/04 ,  C07D201/06

公开(公告)号：DE2656182A1

公开(公告)日：1978-06-22

申请号：DE2656182

申请日：1976-12-11

Applicant: BASF AG

Inventor： FUCHS HUGO DIPL CHEM DR ,  BRAND UWE ING GRAD ,  KARTTE KLAUS DIPL CHEM DR

IPC: C07D201/16 ,  C07D223/10

Abstract: In a process for the continuous extraction of caprolactam from crude lactam by means of benzene in counter-current, in which crude lactam is fed into the upper part of an extraction zone and benzene into the lower part, a solution of caprolactam in benzene is taken off at the top and an aqueous solution containing impurities is taken off at the bottom, the improvement that water is additionally fed into the upper part of the extraction zone and a part of the aqueous solution, containing impurities, obtained at the bottom of the extraction zone is recycled into the extraction zone. Caprolactam is used for the manufacture of nylon.

公开(公告)号：DE3104277A1

公开(公告)日：1982-08-19

申请号：DE3104277

申请日：1981-02-07

Applicant: BASF AG

Inventor： FUCHS HUGO DIPL CHEM DR ,  BUCHAECKERT HELMUT ,  BRAND UWE ING GRAD

IPC: C07D201/06 ,  F28G1/00 ,  F28G1/12 ,  B08B1/00 ,  C07D201/04

Abstract: In a process for cleaning heat-exchanger surfaces in fluidising apparatuses for the preparation of epsilon -caprolactam by catalytic rearrangement of cyclohexanone oxime in the presence of supported catalysts containing boron trioxide in the fluidised bed, the heat-exchanger surfaces are treated with a pulsed fluidised bed of quartz sand, sintered aluminium oxide and/or glass beads.

公开(公告)号：DE2415873A1

公开(公告)日：1975-10-30

申请号：DE2415873

申请日：1974-04-02

Applicant: BASF AG

Inventor： GATH RUDOLPH ,  FUCHS HUGO DIPL CHEM DR ,  SCHMITZ RUEDIGER ,  KARTTE KLAUS DIPL CHEM DR ,  BRAND UWE ING GRAD

IPC: C08G69/46

Abstract: A process for processing polycaprolactam extraction liquors by evaporation of water and distillation of the residue in which the evaporation of water is carried out in a plurality of stages and the evaporation energy for the removal of the bulk of the water is taken from the heat liberated in the rearrangement of cyclohexanone oxime to caprolactam in oleum or sulfuric acid by using the extraction water for cooling the rearrangement mixture and utilizing the heat absorbed by the extraction water for the concentration of this extraction water by evaporation of water.