公开(公告)号：DE2951956A1

公开(公告)日：1981-07-23

申请号：DE2951956

申请日：1979-12-22

Applicant: BASF AG

Inventor： RIEBER NORBERT DIPL CHEM DR ,  PLATZ ROLF DIPL CHEM DR ,  FUCHS WERNER DIPL CHEM DR ,  STABENOW JOACHIM DIPL PHYS DR ,  HERRMANN GUENTER DIPL ING DR ,  WILFINGER HANS JOERG DIPL CHEM ,  HELLBACH HANS DIPL ING

IPC: C07C27/12 ,  C07C27/00 ,  C07C29/50 ,  C07C45/00 ,  C07C45/33 ,  C07C49/403 ,  C07C67/00 ,  C07C407/00 ,  C07C409/06 ,  C07C409/14 ,  C07C179/02 ,  C07C179/053

公开(公告)号：DE2650892A1

公开(公告)日：1978-06-01

申请号：DE2650892

申请日：1976-11-06

Applicant: BASF AG

Inventor： MAGNUSSE PETER DIPL CHEM DR ,  HERRMANN GUENTER DIPL ING DR ,  FROMMER ELMAR DIPL CHEM DR

IPC: C07C27/12 ,  B01J31/00 ,  B01J31/04 ,  C07C20060101 ,  C07C13/18 ,  C07C27/00 ,  C07C27/26 ,  C07C35/08 ,  C07C45/00 ,  C07C49/403 ,  C07C67/00 ,  C07C49/30

Abstract: The treatment of reaction mixts. contg. cyclohexanol and cyclohexanone obtd. by oxidn. of cyclohexane in O2 or gases contg. it, in the liq. phase, at 130-200 degrees C, at 5-25 bars pressure, involves the action in two stages of aq. solns. of alkaline hydroxide and/or carbonate. Fresh aq. alkaline soln. is introduced at the second stage, and the resulting residual alkali is sepd. and added to fresh reaction mixt. at the first stage where the treatment is carried out in presence of inert gases. The inert gases are removed before the second stage. Process purifies the cyclohexanol/cyclohexanone mixt. These cpds. are used to prepare adipic acid or caprolactam. The use of inert gases in the process reduces consumption of alkali and so reduces the amt. of alkaline waste-water which must be treated subsequently.

公开(公告)号：DE2745448A1

公开(公告)日：1979-04-12

申请号：DE2745448

申请日：1977-10-08

Applicant: BASF AG

Inventor： MAGNUSSEN PETER DIPL CHEM DR ,  HERRMANN GUENTER DIPL ING DR ,  FROMMER ELMAR DIPL CHEM DR

IPC: C07C27/12 ,  C07C27/26 ,  C07C35/08 ,  C07C49/30

Abstract: A reaction mixt. contg. cyclohexanol (I) and cyclohexanone (II), obtd. by oxidn. of cyclohexane with O2 (O2-contg. gas) in the liq. phase at 130-200 degrees C and 5-25 bars, is processed in 2 stages with an aq. soln. of an alkali metal hydroxide and/or carbonate. The fresh aq. soln. is added in the second stage. The alkaline effluent sepd. from the second stage is contacted with fresh reaction mixt. in presence of an inert gas; the inert gas is sepd. before the second stage. The treatment is pref. with NaOH or Na2CO3; the inert gas is the waste gas obtd. in the oxidn. of cyclohexane; treatment in both stages is at 100-150 degrees C; and alkali consumption can still be further reduced by addn. of a heavy metal cpd., pref. a Co cpd. The consumption of alkali is considerably reduced and there is a smaller amt. of waste water to be purified.

公开(公告)号：DE2819593A1

公开(公告)日：1979-11-08

申请号：DE2819593

申请日：1978-05-05

Applicant: BASF AG

Inventor： HERRMANN GUENTER DIPL ING DR ,  FROMMER ELMAR DIPL CHEM DR ,  PAETSCH JUERGEN DIPL CHEM DR ,  REISS WOLFGANG DIPL CHEM DR ,  WINDERL SIEGFRIED DIPL CHEM DR

IPC: C07C29/149 ,  C07C31/20 ,  C07C29/00

Abstract: H3PO4 or a phosphate ester is added to 6 C mono- and/or dicarboxylic acids, esp. the acid mixts. obtd. as by-prods. in cyclohexane oxidn. to cyclohexanone, before their hydrogenation to 6 C alpha, omega-diols. Phosphoric acid or phosphate quantity added may be 10-100 ppm. w.r.t. aq. solns. The phosphates may be derived from 1-20 C alcohols. The formation of residues, i.e. 'cork' formation, causing clogging of plant, is prevented.