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公开(公告)号：CA2451869A1
公开(公告)日：2003-01-16
申请号：CA2451869
申请日：2002-07-02
Applicant: BASF AG
Inventor： WOSTBROCK KARL-HEINZ , KERTH STEFFEN , KRUEGER HEINZ , THIEL JOACHIM , STROEFER ECKHARD , SACHWEH BERND , RUMPF BERND , GERBER BERND , WEBER MARKUS
Abstract: The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of sa id column.
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公开(公告)号：ES2175794T3
公开(公告)日：2002-11-16
申请号：ES98948948
申请日：1998-09-09
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , THIEL JOACHIM , BROLLOS KLAUS
Abstract: A process for preparing acrylic acid or methacrylic acid comprises preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid. The product is removed from the gaseous product mixture by a process comprising the following steps:(a) condensing said gaseous product mixture,(b) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (a),(c) removing the resulting crystals from the mother liquor, and(d) recycling at least a portion of said mother liquor from step (c) into step (a).
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公开(公告)号：NO20020349D0
公开(公告)日：2002-01-23
申请号：NO20020349
申请日：2002-01-23
Applicant: BASF AG
Inventor： AUER HEINZ , DAHLHAUS JUERGEN , FISCHER KARL , HAMMER HANS , KELLENBENZ JOCHEN , SCHULZ MICHAEL , THIEL JOACHIM , VICARI MAXIMILIAN
IPC: B01J3/00 , B01D3/00 , B01J3/02 , B01J19/00 , C07B61/00 , C07C29/80 , C07C31/04 , C07C67/36 , C07C69/06 , C07C
Abstract: A description is given of a process for preparing methyl formate by reacting excess methanol with carbon monoxide under superatmospheric pressure and at elevated temperature in the presence of alkali metal methoxide or alkaline earth metal methoxide as catalyst in a pressure-rated reactor, in which the use of at least two reactor elements, preferably operated in countercurrent, at about 100° C. and a pressure of about 100 bar in combination with a solids-free desalting of the reaction product makes possible very economical, largely trouble-free production of methyl formate in any desired quality and with a very good production capacity. Furthermore, the process for solids-free desalting and apparatuses for carrying out this process are described.
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公开(公告)号：BR0008815A
公开(公告)日：2001-12-18
申请号：BR0008815
申请日：2000-02-28
Applicant: BASF AG
Inventor： THIEL JOACHIM , SCHROEDER JURGEN , NESTLER GERHARD
IPC: B01D5/00 , B01D3/14 , B01D3/16 , B01D3/20 , B01D3/22 , B01D3/26 , B01D3/32 , C07C51/43 , C07C51/44 , C07C51/487 , C07C51/50 , C07C57/05 , C07C57/055 , C07C57/07 , C07C57/075
Abstract: In a process for the fractional condensation of an acrylic acid-containing product gas mixture of a gas-phase partial oxidation of C3 precursors of acrylic acid with molecular oxygen under heterogeneous catalysis, the separation column used contains both dual-flow trays and hydraulically sealed cross-flow trays as baffles having separation activity.
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公开(公告)号：ID27390A
公开(公告)日：2001-04-05
申请号：ID20010163
申请日：1999-07-21
Applicant: BASF AG
Inventor： ECK BERND , HEILEK JORG , SCHLEIPHAKE VOLKER , PROLL THEO , BROLLOS KLAUS , THIEL JOACHIM , MACHHAMMER OTTO
IPC: C07C51/225 , C07C51/43 , C07C57/05 , C07C57/07
Abstract: A process for the preparation of acrylic acid by:(a) preparation of a gaseous product mixture which essentially has the composition of a reaction mixture of catalytic gas-phase oxidation of C3-alkanes, C3-alkenes, C3-alkanols and/or C3-alkanals and/or intermediates thereof to acrylic acid, which comprises(b) condensation of the gaseous product mixture,(c) crystallization of the acrylic acid from the solution obtained in stage (b), with partial evaporation of the solution under reduced pressure,(d) isolation of the resulting crystals from the mother liquor,(e) recycling of at least a part of the mother liquor from stage (d) to stage (b) and(f) recycling of at least a part of the evaporated solution from stage (c) to stage (b).
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Patent Agency Ranking
公开(公告)号：CZ2000898A3
公开(公告)日：2000-06-14
申请号：CZ2000898
申请日：1998-09-10
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , THIEL JOACHIM , BROELLOS KLAUS
Abstract: A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.
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公开(公告)号：AU9624998A
公开(公告)日：1999-04-05
申请号：AU9624998
申请日：1998-09-10
Applicant: BASF AG
Inventor： ECK BERND , MACHHAMMER OTTO , PROLL THEO , SCHLIEPHAKE VOLKER , THIEL JOACHIM , BROLLOS KLAUS
Abstract: A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.
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公开(公告)号：CA2303445A1
公开(公告)日：1999-03-25
申请号：CA2303445
申请日：1998-09-09
Applicant: BASF AG
Inventor： BROLLOS KLAUS , THIEL JOACHIM , SCHLIEPHAKE VOLKER , MACHHAMMER OTTO , PROLL THEO , ECK BERND
Abstract: The invention relates to a method for producing acrylic acid and methacrylic acid by producing a gaseous product mixture which essentially has the composition of a reaction mixture of the catalytic gas phase oxidation of C3/C4- alkanes, -alkenes, -alkanols or -alkanals or precursors thereof to form acrylic acid or methacrylic acid. The product is separated from the gaseous product mixture according to a method comprising the following steps: a) condensing the gaseous product mixture; b) crystallising the acrylic acid or methacrylic acid from the solution obtained in (a); c) separating the resulting crystals from the mother liquor and d) returning at least a part of the mother liquor from stage (c) to stage (a).
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公开(公告)号：SA1797B1
公开(公告)日：2007-05-06
申请号：SA03240297
申请日：2003-09-16
Applicant: BASF AG
Inventor： THIEL JOACHIM , HAMMON ULRICH , GERBER BERND , JANSEN HELMUT , KAIBEL BJORN
Abstract: المخلص : صينيةمحكمةالغلقهيدروليكيا hydraulically لنقلكتلةمتدفقةتفاطعياأوعرضيا،وأعمدةفصلتحتويعلىالصينيةالمحكمةهيدروليكيا hydraulically لنقلكتلةمتدفقةعرضياواستعمالأعمدةالفصلالمذكورةلعملياتالفصلالحراري thermal separating processes.،٣ ١شكل
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公开(公告)号：AT358113T
公开(公告)日：2007-04-15
申请号：AT00956304
申请日：2000-07-26
Applicant: BASF AG
Inventor： AUER HEINZ , DAHLHAUS JUERGEN , FISCHER KARL , HAMMER HANS , KELLENBENZ JOCHEN , SCHULZ MICHAEL , THIEL JOACHIM , VICARI MAXIMILIAN
IPC: B01D3/00 , B01J3/00 , B01J3/02 , B01J19/00 , C07B61/00 , C07C29/80 , C07C31/04 , C07C67/36 , C07C69/06
Abstract: A description is given of a process for preparing methyl formate by reacting excess methanol with carbon monoxide under superatmospheric pressure and at elevated temperature in the presence of alkali metal methoxide or alkaline earth metal methoxide as catalyst in a pressure-rated reactor, in which the use of at least two reactor elements, preferably operated in countercurrent, at about 100° C. and a pressure of about 100 bar in combination with a solids-free desalting of the reaction product makes possible very economical, largely trouble-free production of methyl formate in any desired quality and with a very good production capacity. Furthermore, the process for solids-free desalting and apparatuses for carrying out this process are described.
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