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公开(公告)号：JPH10309457A
公开(公告)日：1998-11-24
申请号：JP11332098
申请日：1998-04-23
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , RAUH ULRICH , SCHRAUT ARMIN DR
Abstract: PROBLEM TO BE SOLVED: To provide a reactor apparatus and a method for treating fluid material in which temperature is measured in the representative conditions in the tubular reactors. SOLUTION: The reactor apparatus comprises both a tubular reactor equipped with a temperature measuring unit and a tubular reactor unequipped with the temperature measuring unit. The tubular reactors are set up so that the mass of solid particles to be introduced is directly proportional to the free cross-sectional area of the respective tubular reactors and flow resistance or pressure drop in the tubular reactors, and accordingly average rectilinear velocity are identical when gas flow rate being proportional to the free cross-sectional area is conducted. Concretely, the above- mentioned pressure drop is adjusted by fines fraction of the solid particles in accordance with the following formula. mfines =mtot (Pm -PI)/(P2 -P1 ) (in formula, mfines denotes mass of fines fraction. mtot denotes total mass of solid particle and fines fraction. Pm denotes average pressure drop in tubular reactor unequipped with temperature measuring unit. P1 denotes pressure drop in tubular reactor equipped with temperature measuring unit in the case of filling solid particles. P2 denotes pressure drop in tubular reactor which is equipped with temperature measuring unit and is filled with fines fraction).
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公开(公告)号：DE19717165A1
公开(公告)日：1998-10-29
申请号：DE19717165
申请日：1997-04-23
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , RAUH ULRICH , SCHRAUT ARMIN DR
Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.
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公开(公告)号：DE19709392A1
公开(公告)日：1998-09-10
申请号：DE19709392
申请日：1997-03-07
Applicant: BASF AG
Abstract: The invention relates to a method for extracting an aqueous solution containing (meth)acrylic acid. Said solution is brought into contact with a solution containing at least one extracting agent which can be converted into (meth)acrylic acid and forms a miscibility gap with the aqueous solution to produce an organic phase containing (meth)acrylic acid and extraction agent and an aqueous phase.
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公开(公告)号：DE19727234C1
公开(公告)日：1999-07-15
申请号：DE19727234
申请日：1997-06-26
Applicant: BASF AG
Inventor： HENNIG GUNNAR DR , SCHRAUT ARMIN DR , MARTIN FRIEDRICH-GEORG DR , ULBRICH MICHAEL-DIETER DR , BAUR KARL GERHARD DR , THIESSEN FRITZ DR
Abstract: The invention relates to a method for producing alkyl(meth)acrylate by continuous reaction of an aqueous solution containing (meth)acrylic acid obtained directly from gas-phase oxidation by reacting with a straight-chain or branched alkanol with 1 to 6 C atoms or a mixture of two or more thereof in the presence of an esterification catalyst. The inventive method is characterized in that alkanol is introduced into aqueous solution containing (meth)acrylic acid in the form of a gas.
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公开(公告)号：DE19752199A1
公开(公告)日：1999-05-27
申请号：DE19752199
申请日：1997-11-25
Applicant: BASF AG
IPC: B01D5/00 , C07C45/81 , C07C51/42 , C07C57/07 , C07D301/32 , C07B63/00 , C07C47/127 , C07C47/22 , C07C209/86 , C07C211/46 , C07D303/04
Abstract: The temperature difference between gas and condenser surface is reduced, compared with present practice, to less than 20 deg C. At least 10 000 condensation nuclei/cm in the condenser for effective condensation is carried out. The gas mixture should have a Lewis factor between 0.9 and 1.5. Components which are required to be separated are water vapor and an organic vapor, which could be the principal product or a byproduct. Cooling is generally carried out in at least two stages over heat exchange surfaces that could be dry or covered by a water film. The body of the specification, supported by the drawings, contains detailed examples of condensation processes in which data from the inventive and the present methods are compared.
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Patent Agency Ranking
公开(公告)号：DE19754014A1
公开(公告)日：1999-06-10
申请号：DE19754014
申请日：1997-12-05
Applicant: BASF AG
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公开(公告)号：DE19638093A1
公开(公告)日：1998-03-19
申请号：DE19638093
申请日：1996-09-18
Applicant: BASF AG
Inventor： MARTIN FRIEDRICH-GEORG DR , SCHRAUT ARMIN DR , WEKERLE JOSEF
Abstract: When producing esters of acrylic or methacrylic acid by esterification with alcohols troublesome deposits of high molecular byproducts build up in parts of the apparatus. Said deposits can be prevented, removed or reduced by applying a liquid in the parts of the apparatus contaminated with deposits or on those surfaces where deposits easily build up. Said liquid is partially or totally made out of the alcohol used for esterification. The moistening is performed preferably by means of appropriate nozzles or cleansing jets.
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公开(公告)号：MY119149A
公开(公告)日：2005-04-30
申请号：MYPI9801818
申请日：1998-04-23
Applicant: BASF AG
Inventor： HAMMON ULRICH DR , ULRICH RAUH , SCHLIEPHAKE VOLKER DR , SCHRAUT ARMIN DR
Abstract: A REACTOR APPARATUS COMPRISES AT LEAST TWO SAME-TYPE TUBULAR REACTORS WHICH ARE FILLED WITH SOLID PARTICLES, AT LEAST ONE TUBULAR REACTOR CONTAINING A TEMPERATURE MEASURING UNIT, THE TUBULAR REACTORS BEING DESIGNED SUCH THAT BOTH THE RATIO OF THE MASS OF THE SOLID PARTICLES TO THE FREE CROSS-SECTIONAL AREA OF THE RESPECTIVE TUBULAR REACTOR AND THE PRESSURE DROP MEASURED BY AN INERT GAS BEING CONDUCTED TRANSVERSELY TO THE FREE CROSS-SECTIONAL AREA ARE IDENTICAL ACROSS THE RESPECTIVE TUBULAR REACTOR. THE APPARATUS IS SUITABLE FOR TREATING FLUID MASSES WHILE GENERATING OR CONSUMING THERMAL ENERGY, THE TEMPERATURE BEING MEASURED.
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公开(公告)号：ES2179397T3
公开(公告)日：2003-01-16
申请号：ES98107290
申请日：1998-04-22
Applicant: BASF AG
Inventor： SCHLIEPHAKE VOLKER DR , HAMMON ULRICH DR , RAUH ULRICH , SCHRAUT ARMIN DR
Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.
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公开(公告)号：DE19754155A1
公开(公告)日：1999-06-10
申请号：DE19754155
申请日：1997-12-05
Applicant: BASF AG
Inventor： ULBRICH MICHAEL-DIETER DR , SACHWEH BERND DR , SCHRAUT ARMIN DR , HAMMON ULRICH DR , SCHLIEPHAKE VOLKER DR , MARTIN FRIEDRICH-GEORG DR
IPC: B01D53/00 , C07C45/78 , C07C51/42 , C07C57/05 , C07C57/07 , B01D47/00 , B01D51/00 , C07C47/12 , C07C47/22
Abstract: Gas coolers in which hot gasses are brought into contact with a moving cooling liquid film are used for cooling hot gasses and thus for preventing the formation of condensation cores. In a process for cooling hot gaseous reaction products from gas phase reactions for preparing glyoxal of compounds of general formula (I): H2C=C(R )-C(R )=O, in which R is hydrogen or methyl and R is hydrogen or OH, in particular acrolein, methacrolein, acrylic acid and methacrylic acid, hot gaseous reaction products are brought into contact with a cooling liquid in a gas cooler, and the cooling liquid is present in the form of a moving liquid film.
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