公开(公告)号：JPS4955610A

公开(公告)日：1974-05-30

申请号：JP7136973

申请日：1973-06-26

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C45/16

公开(公告)号：DE2003126A1

公开(公告)日：1971-08-12

申请号：DE2003126

申请日：1970-01-24

Applicant: BASF AG

Inventor： SPERBER HEINRICH DR ,  HAAS HANS DR ,  HUSSY OSKAR DIPL-ING ,  SCHREIBER HANS DIPL-ING ,  SCHAEFER GERHARD DIPL-ING ,  LENZ HEINZ DIPL-ING

IPC: B01J8/02

Abstract: The catalyst bed is supported on a downward dished support, which avoids crack formation and channelling due to a temp. fluctuations. Underneath the bed, separated by a distance of less than a tenth of the gas velocity per second, the reaction products pass into the cooler. Prompt quenching improves the yield. Can be used for aldehyde mfe.

公开(公告)号：CH506462A

公开(公告)日：1971-04-30

申请号：CH1620468

申请日：1968-10-31

Applicant: BASF AG

Inventor： DUEMBGEN GERD DR ,  GRABOWSKY OTTO DR ,  HAAS HANS DR ,  SPERBER HEINRICH DR ,  WOERNER ALFRED DR ,  JOSEF ZIPFEL

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C67/00 ,  C07C47/04

公开(公告)号：DE2137938A1

公开(公告)日：1973-02-15

申请号：DE2137938

申请日：1971-07-29

Applicant: BASF AG

Inventor： DIEM HANS DR ,  HAAS HANS DR ,  MATTHIAS GUENTER DR ,  SCHAEFER GERHARD DIPL ING ,  HUSSY OSKAR DIPL ING

IPC: B01J8/02 ,  C07C45/38 ,  C07C45/16

Abstract: The reaction is by dehydration of methanol over a silver catalyst. The screen, which is fastened to the base in several places carries the catalyst a small distance above the base thereby reducing the pressure drop across the catalyst bed.

公开(公告)号：DE1768982A1

公开(公告)日：1972-01-13

申请号：DE1768982

申请日：1968-07-19

Applicant: BASF AG

Inventor： SPERBER HEINRICH DR ,  ZIPFEL JOSEF ,  HAAS HANS DR

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C67/00 ,  C07C47/04

Abstract: 1,235,138. Formaldehyde. BADISCHE ANILIN- & SODA-FABRIK A.G. 1 Nov., 1968 [4 Nov., 1967; 2 Dec., 1967; 19 July, 1968], No. 51928/68. Heading C2C. Formaldehyde solutions are prepared by reaction of methanol in the gas phase with O 2 or a gas containing free O 2 with or without steam at 600-800‹ C. in contact with a silver catalyst followed by multistage absorption of the formaldehyde from the resultant gas, the gas passing through at least three absorption stages at 60-90‹ C. under acid conditions, the first to penultimate stages containing an aqueous ureaformaldehyde precondensate solution having a molar ratio of formaldehyde to urea of from 1.8:1 to 2.8:1 and the final stage containing an aqueous urea solution, the residence time in said final stage being not more than one hour. Aqueous methanol recovered from the gas leaving the final absorption stage is preferably recycled for oxidation, and the mixture of recovered aqueous methanol and fresh methanol is treated with an alkaline agent to a pH of at least 9 before oxidation. The aqueous formaldehyde-urea precondensate solution may be obtained by mixing liquids from the final and first absorption stages and condensing under acid conditions.

公开(公告)号：DE1961363A1

公开(公告)日：1971-06-16

申请号：DE1961363

申请日：1969-12-06

Applicant: BASF AG

Inventor： HAAS HANS DR ,  HUSSY OSKAR DIPL-ING ,  SCHREIBER HANS DIPL-ING ,  SPERBER HEINRICH DR ,  ZIPFEL JOSEF

IPC: B01J8/02 ,  C07C45/38 ,  B01J

Abstract: Cooler for reactor as in BE 729336 has finned tubes in parallel arrangement through which coolant is passed, and which serve as support for metal catalyst support. Pref. several rows of tubes are used, the top one being of finned tubes, and other rows being of smooth tubes of dia. >=20% less.

公开(公告)号：DE2231248A1

公开(公告)日：1974-01-17

申请号：DE2231248

申请日：1972-06-26

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C47/04

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：NL7308576A

公开(公告)日：1973-12-28

申请号：NL7308576

申请日：1973-06-20

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C07C47/055 ,  D06P3/54 ,  C07C45/16 ,  C07C47/04 ,  B01J11/20

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：BE801364A

公开(公告)日：1973-12-26

申请号：BE132650

申请日：1973-06-25

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：GB1425751A

公开(公告)日：1976-02-18

申请号：GB3001273

申请日：1973-06-25

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C47/04 ,  C07C45/16

Abstract: 1425751 Formaldehyde BADISCHE ANILIN- & SODA-FABRIK AG 25 June 1973 [26 June 1972] 30012/73 Heading C2C In a process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst at elevated temperature, the reaction is carried out at a temperature of 550‹ to 750‹ C. and during the reaction an additional vapour mixture of oxygen and water heated to at least 70‹ C. and providing 0À05 to 0À8 mole of water and of 0À005 to 0À06 mole of oxygen (O 2 ) based on 1 mole of feed methanol, is introduced into the vaporous starting mixture which has been heated to at least 60‹ C. and contains from 0À09 to 1À8 moles of water and 0À35 to 0À5 moles of oxygen (O 2 ) per 1 mole of methanol before said starting mixture enters the catalyst bed, the space velocity being 0À9 to 3 metric tons of methanol per square meter of catalyst bed cross-section per hour. The plant may consist of a plurality of reactors in parallel, and not all the reactors need be operated according to the invention, at least not all the time. The reaction temperature may be raised in steps. Baffles at which impurities collected and removed may be provided downstream of the point of introduction of the additional vapour mixture but upstream of the catalyst bed.