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公开(公告)号:AU2172001A
公开(公告)日:2001-07-09
申请号:AU2172001
申请日:2000-12-22
Applicant: BASF AG
Inventor: BLOCK ULRICH , SEUBERT ROLF , ULRICH BERNHARD , WUNSCHMANN HELMUT
Abstract: A process and an apparatus for producing a homogeneous mixture of a gaseous aromatic hydrocarbon and an oxygen-containing gas for catalytic gas-phase reactions, in particular a homogeneous mixture of gaseous o-xylene and/or naphthalene and air for preparing phthalic anhydride, are provided. The liquid aromatic hydrocarbon is atomized to form droplets having a diameter of less than 1 mm and injected into an oxygen-containing gas stream (12) preheated to above the boiling point of the aromatic hydrocarbon. According to the invention, the liquid aromatic hydrocarbon is atomized by means of nozzles (15) which form a hollow cone (16), preferably by means of swirl nozzles. The o-xylene/air mixture is advantageously produced in a chamber which is bounded by side walls (18) heated to above the boiling point of the hydrocarbon.
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公开(公告)号:DE19962616A1
公开(公告)日:2001-06-28
申请号:DE19962616
申请日:1999-12-23
Applicant: BASF AG
Inventor: BLOCK ULRICH , SEUBERT ROLF , ULRICH BERNHARD , WUNSCHMANN HELMUT
IPC: C07B61/00 , C07D307/89 , B01F5/02
Abstract: Production of a homogeneous mixture of an aromatic hydrocarbon vapor and an oxygen containing gas for catalytic gas phase reactions, comprises spraying droplets of the liquid aromatic hydrocarbon having a diameter of less than 1 mm, into the oxygen containing gas stream, heated to above the b.pt. of the hydrocarbon, by means of nozzles, preferably rifled nozzles to form a hollow cone. An Independent claim is included for a device for the production of the vapor mixture (I) having gas channels (11) for the pre-heated oxygen containing gas stream (12); a spray device (13) opening into one channel (11) for a liquid aromatic hydrocarbon stream whereby the spray device (13) has rifled nozzles (15) and the gas channels (11) have walls (18) that extend at least away from the nozzles (15) and are heated to at least the b.pt. of the hydrocarbon.
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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
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24.
公开(公告)号:CA1235132A
公开(公告)日:1988-04-12
申请号:CA490422
申请日:1985-09-11
Applicant: BASF AG
Inventor: BLOCK ULRICH
IPC: C07D307/89 , C07C51/573 , C07D307/60 , F28C3/02
Abstract: The temperature of the exit gas from the gas washer in the preparation of phthalic anhydride by catalytic oxidation of naphthalene or oxylene with air is increased by a method in which flue gas from the combustion furnace for residues is mixed with the exit gas before the latter emerges into the atmosphere.
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公开(公告)号:FI853436A0
公开(公告)日:1985-09-09
申请号:FI853436
申请日:1985-09-09
Applicant: BASF AG
Inventor: BLOCK ULRICH
IPC: C07D307/89 , C07C51/573 , C07D307/60 , F28C3/02 , C07D
Abstract: The temperature of the exit gas from the gas washer in the preparation of phthalic anhydride by catalytic oxidation of naphthalene or o-xylene with air is increased by a method in which flue gas from the combustion furnace for residues is mixed with the exit gas before the latter emerges into the atmosphere.
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公开(公告)号:NO152371B
公开(公告)日:1985-06-10
申请号:NO801034
申请日:1980-04-10
Applicant: BASF AG
Inventor: WOLF DIETER , SCHMIDT RUDOLF , BLOCK ULRICH , SCHOENMAKERS HARTMUT , BORR KASPAR , KAIBEL GERD
Abstract: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein (a) methyl formate is hydrolyzed, (b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, (c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, (d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, (e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), (f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and (g) the extractant leaving stage (f) is recycled to the process.
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公开(公告)号:NO801034A
公开(公告)日:1980-10-13
申请号:NO801034
申请日:1980-04-10
Applicant: BASF AG
Inventor: WOLF DIETER , SCHMIDT RUDOLF , BLOCK ULRICH , SCHOENMAKERS HARTMUT , BOTT KASPAR , KAIBEL GERD
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