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31. 发明专利

BRPI0415989A 未知
公开(公告)号：BRPI0415989A
公开(公告)日：2007-01-09
申请号：BRPI0415989
申请日：2004-10-28
申请人： BASF AG
发明人： DIETERLE MARTIN , PETZOLDT JOCHEN , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： C07C51/25 , C07C57/04
摘要： The invention relates to a long-life method for two-stage heterogeneously-catalysed gas phase partial oxidation of propene into acrylic acid. According to said method, the temperature of the fixed catalyst beds is increased overtime; the gas phase partial oxidation is interrupted from time to time and, when the temperature of said fixed catalyst beds is increased, a gas mixture, containing oxygen, is led through the fixed catalyst beds.

32. 发明专利

BRPI0416081A 未知
公开(公告)号：BRPI0416081A
公开(公告)日：2007-01-02
申请号：BRPI0416081
申请日：2004-10-08
申请人： BASF AG
发明人： DIETERLE MARTIN , PETZOLDT JOCHEN , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： C07C51/25 , C07C57/04
摘要： A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid, in which the temperature of the fixed catalyst bed is increased over time and partial oxidation is interrupted and an oxygen-containing gas is conducted through the fixed catalyst bed before the temperature increase is 8° C.

33. 发明专利

BRPI0412503A 未知
公开(公告)号：BRPI0412503A
公开(公告)日：2006-09-19
申请号：BRPI0412503
申请日：2004-07-09
申请人： BASF AG
发明人： ECK BERND , HAMMON ULRICH , MUELLER-ENGEL KLAUS JOACHIM , DER JUERGEN SCHR , THIEL JOACHIM , MARTAN HANS
IPC分类号： B01D3/14 , B01D3/32 , C07C51/215 , C07C51/25 , C07C51/43 , C07C51/44
摘要： A thermal separating process for removing a stream containing enriched (meth)acrylic monomers from a mixture containing (meth)acrylic monomers, in which the liquid phases retained in the separating space at high temperature and high (meth)acrylic monomer content are minimized.

34. 发明专利

DE50303884D1 未知
公开(公告)号：DE50303884D1
公开(公告)日：2006-07-27
申请号：DE50303884
申请日：2003-12-08
申请人： BASF AG
发明人： NESTLER GERHARD , MUELLER-ENGEL KLAUS JOACHIM , WICKEL STEFAN
IPC分类号： C08F20/06 , A61L15/60 , C07C51/43 , C08F8/00 , C08J3/12
摘要： Preparation of low odor hydrogel-forming polymerisate based on acrylic acid involving preparation of a polymeric hydrogel by radical polymerization of acrylic acid containing monomer in an aqueous polymerization medium and conversion of the hydrogel into a particulate hydrogel or hydrogel forming powder, and treatment of these with a crosslinking substance having at least two latent functional groups reactive to the polymerisate carboxyl groups is new. A process for preparation of low odor hydrogel-forming polymerisate based on acrylic acid including the steps; (a) preparation of a polymeric hydrogel by radical polymerization of at least 50 wt.% of acrylic acid containing monomer composition in an aqueous polymerization medium and conversion of the hydrogel into a particulate hydrogel or a hydrogel forming powder, and optionally treatment of these with a crosslinking substance having at least two latent functional groups reactive to the polymerisate carboxyl groups, where in step (a) the acrylic acid contains at least 500 ppm of acrylic acid oligomer.

35. 发明专利

BRPI0408968A 未知
公开(公告)号：BRPI0408968A
公开(公告)日：2006-04-04
申请号：BRPI0408968
申请日：2004-04-03
申请人： BASF AG
发明人： SCHINDLER GOETZ-PETER , MACHHAMMER OTTO , PETZOLDT JOCHEN , ADAMI CHRISTOPH , HARTH KLAUS , HECHLER CLAUS , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： B01J23/62 , B01J23/63 , C07C45/33 , C07C45/34 , C07C45/35 , C07C51/25 , C07C253/26 , C07C255/08 , C07C5/327
摘要： The invention relates to a method for the production of at least one partial oxidation and/or ammoxidation product of a hydrocarbon, wherein at least one saturated hydrocarbon (K) that is heterogeneously catalyzed is partially dehydrogenated and the resulting product gas mixture (A) containing the partially dehydrogenated hydrocarbon is used as such or in modified form for the heterogeneously catalyzed, partial oxidation and/or ammoxidation of the partially dehydrogenated hydrocarbon contained in the product gas mixture (A), wherein at least one mechanical separation operation is conducted between the product gas mixture (A) and the heterogeneously catalyzed, partial oxidation and/or ammoxidation.

36. 发明专利

BR0314992A 未知
公开(公告)号：BR0314992A
公开(公告)日：2005-08-09
申请号：BR0314992
申请日：2003-10-06
申请人： BASF AG
发明人： THIEL JOACHIM , HAMMON ULRICH , BAUMANN DIETER , HEILEK JOERG , SCHROEDER JUERGEN , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： C07C51/44 , C07C57/04
摘要： In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C 3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.

37. 发明专利

DE10353954A1 Preparation of acrolein, for e.g. preparing acrylic acid, comprises heterogeneously catalyzed partial gas phase oxidation of gas mixture comprising propene, molecular oxygen and inert gas at elevated temperature on a fixed catalyst bed 未知
公开(公告)号：DE10353954A1
公开(公告)日：2005-06-09
申请号：DE10353954
申请日：2003-11-18
申请人： BASF AG
发明人： PETZOLDT JOCHEN , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： B01J23/888 , B01J35/00 , B01J35/02 , C07C45/35 , C07C47/22 , C07C27/14 , B01J23/85
摘要： Preparation of acrolein by heterogeneously catalyzed partial gas phase oxidation comprises conducting a starting reaction gas mixture comprising propene, molecular oxygen, at least one inert gas, carbon dioxide and saturated hydrocarbons at elevated temperature on a fixed catalyst bed, whose catalysts are annular unsupported catalysts with an active composition of at least one multimetal oxide (I). Preparation of acrolein by heterogeneously catalyzed partial gas phase oxidation involves conducting a starting reaction gas mixture comprising propene, molecular oxygen, at least one inert gas, carbon dioxide and saturated hydrocarbons at elevated temperature on a fixed catalyst bed, whose catalysts are annular unsupported catalysts having active composition of at least one multimetal oxide of formula (I). The molar ratio of oxygen to propene in the mixture is >= 1, and the amount of carbon dioxide and saturated hydrocarbons together is = 15 mol%. The hourly space velocity of propene in the starting reaction gas mixture is >= 120 l (STP)/hour. In composition (I) the molar ratio of Co:Fe is 2 - 4 (preferably 2 - 3.5) and Co:Mo is 0.3 - 0.7 (preferably 0.4 - 0.7, especially 0.5 - 0.7). Mo 1 2W aCo bFe cBi dSi eK fO n (I) a : >=1 - = 3; b : >=3 - = 8; c : >=1 - = 4; d : >=0.5 - = 1.5; e : >=0 - = 10; f : >=0 - = 0.2; n : a number which is determined by the valency and frequency of the elements in (I) other than oxygen. An independent claim is also included for an annular unsupported catalyst of formula (I) (where the molar ratio of Co:Fe is 2 - 3.5 and Co:Mo is 0.4 - 0.7).

38. 发明专利

DE102004021764A1 Production of acrylic acid with low by-product content, for use as monomer, by heterogeneous catalyzed partial oxidation of 3C hydrocarbon precursor, preferably with post-reaction to oxidize by-products 未知
公开(公告)号：DE102004021764A1
公开(公告)日：2005-06-02
申请号：DE102004021764
申请日：2004-04-30
申请人： BASF AG
发明人： CREMER ULRICH , DIETERLE MARTIN , JOURDAN SABINE , PETZOLD JOCHEN , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： C07C51/16 , C07C51/25 , C07C57/05
摘要： A method for the production of acrylic acid (I) by heterogeneous catalyzed partial oxidation of 3C hydrocarbon precursor compound(s) (II) is claimed, where the overall selectivity for by-product formation is 1.5 mol.% of less (especially 0.8 mol. % or less).

39. 发明专利

DE102004025445A1 Gas-phase partial oxidation of an organic compound on a heterogeneous catalyst comprises counteracting deactivation of the catalyst by increasing the gas pressure 未知
公开(公告)号：DE102004025445A1
公开(公告)日：2005-02-10
申请号：DE102004025445
申请日：2004-05-19
申请人： BASF AG
发明人： DIETERLE MARTIN , LAQUA GERHARD , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： B01J8/02 , C07B41/00 , C07C45/34 , C07C45/35 , C07C51/16 , C07C51/235 , C07C51/25 , C07C51/255 , C07C27/14 , C07C57/05 , C07B33/00
摘要： Gas-phase partial oxidation of an organic compound by passing a mixture of the compound, oxygen and an inert diluent gas through a bed of catalyst at elevated temperature comprises counteracting deactivation of the catalyst by increasing the gas pressure without altering the gas hourly space velocity. An independent claim is also included for apparatus comprising an oxidation reactor and a pressure-regulating device downstream of the reactor's outlet.

40. 发明专利

DE10344265A1 (Meth)acrylic acid production in high yield, for use as monomer, by gas-phase oxidation of saturated hydrocarbon precursor(s) over two beds of mixed metal oxide catalysts with specific selectivity properties 未知
公开(公告)号：DE10344265A1
公开(公告)日：2004-10-28
申请号：DE10344265
申请日：2003-09-23
申请人： BASF AG
发明人： BORGMEIER FRIEDER , ROSOWSKI FRANK , MARTAN HANS , MUELLER-ENGEL KLAUS JOACHIM
IPC分类号： B01J23/00 , B01J23/28 , B01J23/887 , B01J27/057 , B01J35/00 , B01J37/00 , C07C51/215 , C07C57/05 , B01J23/64
摘要： In the production of (meth)acrylic acid ((M)AA) by passing a gaseous mixture of saturated hydrocarbon precursor(s) (SHP's), oxygen and inert gas through a reactor charged with a mixed metal oxide catalyst (M) containing molybdenum and vanadium, (M) is contained in two beds (I) and (II) of different composition, spaced in the flow direction, having specific selectivity properties on increasing the temperature. Production of (meth)acrylic acid ((M)AA) by heterogeneous gas-phase oxidation at elevated temperature involves passing a gaseous mixture of saturated hydrocarbon precursor(s) (SHP's), oxygen and inert gas(es) at initial pressure P through a reactor charged with a catalyst comprising (as active mass) a mixed metal oxide (M) containing molybdenum and vanadium, at least one of tellurium, antimony and bismuth and at least one of niobium, tantalum, tungsten, cerium and titanium and having an X-ray diffractogram peaks at 2tau values of 22.2 +- 0.5[deg] (h) (strongest peak; half-value breadth at most 0.5[deg]), 27.3 +- 0.5[deg] (i) (half-value breadth 1.0[deg] or less) and 28.2 +- 0.5[deg] (k) (half-value breadth 1.0[deg] or less). The novel feature is that the whole of (M) is contained in two beds (I) and (II) of different composition, spaced in the flow direction. Beds (I) and (II) are such that if the particular bed was the only catalyst present in the same reactor the respective selectivities S1> and S2> for (M)AA would have maximum values (on increasing the conversion of SHP's by increasing the temperature under otherwise identical conditions on a single pass of gas through the reactor) of S1>max and S2>max respectively, where S1>max occurs at lower SHP conversion than S2>max and at an increasing SHP conversion S1> is less than S2>, whereas S1>max is more than S2>max.

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