PARTITION WALL COLUMN FOR SEPARATING MIXTURE INTO AT LEAST THREE FRACTIONS BY DISTILLATION AND SEPARATION METHOD

    公开(公告)号:JPH1033901A

    公开(公告)日:1998-02-10

    申请号:JP11255597

    申请日:1997-04-30

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To simplify reattachment of an existing partition wall column and assembly of a new partition wall column by detachably fitting a partition wall to the inside of the partition wall column. SOLUTION: Partition walls 3 are detachably fitted to the inside of a partition wall column. In other words, the partition walls 3 are fitted on one side of the respective packed beds 4 as a sheet of 0.1-3mm desirably about 1-2mm thickness and formed into a structural member integrated with the packed beds 4. In this case, the integrated partition wall 3 is formed longer than the packed bed 4 combined therewith in the edges of the head and the bottom by about 1-10mm and has an additional sheet strips 5 in the edge of the bottom. The sheet strip 5 has about 10-20mm width and about 0.1-2mm thickness. In the case of combining an individual packed bed 4, a roof type overlapped part is formed and thereby liquid is inhibited from infiltrating. The overlapped part is sealed sufficiently and strongly for infiltration of vapor.

    METHOD TO APPLY CATALYTIC REACTION AND REACTOR THEREFOR

    公开(公告)号:JPH105575A

    公开(公告)日:1998-01-13

    申请号:JP7104797

    申请日:1997-03-25

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To enable catalytic suspension reaction having high blank yield by supplying a liquid phase containing suspension of at least one kind of catalyst and, if necessary, a gas phase through a device in a reaction chamber having orifices or channels having a specified hydraulic diameter when the catalytic reaction is performed. SOLUTION: A bubble tower reaction chamber 1 equipped with orifices and channels having 0.5 to 20mm hydraulic diameter, advantageously 1 to 10mm, and more preferably 1 to 3mm is used. In this chamber, a liquid reaction component containing a suspended catalyst is introduced through a filling tube 3, while a gas reaction component is supplied through a connecting tube 4 to a mixing nozzle 5 to mix the circulated suspension liquid and then supplied to the bottom of the reaction chamber 1. After the suspension liquid with the gas is supplied through a tube 6 to a separator 7, the gas is sent to a ventilation tube 10 through a cooler 8 for the discharged gas and a pressure holding device 9. The suspension liquid is introduced from the separator 7 through a tube 11 to a pump 12, heat exchanger 13, mixing nozzle 5, and reaction chamber 1. After the reaction is completed, the liquid is discharged through a discharging tube 14.

    PACKING STRUCTURE FOR HEAT EXCHANGE AND MASS TRANSFER

    公开(公告)号:JP2001162160A

    公开(公告)日:2001-06-19

    申请号:JP2000224857

    申请日:2000-07-26

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a packing structure capable of increasing the capacity and economical effect of the heat exchange and mass transfer. SOLUTION: At least one packing layer 1 having a first lower end 2 and a second upper end 3 is provided, and the packing layer has an internal geometrical pattern with the height between the lower and upper ends varied. Accordingly, a bubble layer having a gas phase with the dispersed state preferential is formed as desired by appropriately setting the flow velocity of the liquid and gas in the first, especially the lower, zone 6 of the layer 1, and a thin liquid laminar flow having a gas phase with the continuous state preferential is formed as required in the second, especially the upper, zone 7 of the layer 1 at the same time. A packing structure for the heat exchange and mass transfer between liquid and gas in a column provided with at least the one packing layer 1 is obtained in this way.

    SELECTIVE LIQUID-PHASE HYDROGENATION OF ALPHA, BETA-UNSATURATED CARBONYL COMPOUND

    公开(公告)号:JPH11349517A

    公开(公告)日:1999-12-21

    申请号:JP9491399

    申请日:1999-04-01

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To carry out the hydrogenation of especially citral to citronellal at a low cost by an economical process having improved space-time yield and reduced investment cost by hydrogenating an α,β-unsaturated carbonyl compound in liquid phase under specific condition. SOLUTION: A compound of formula II is produced by the hydrogenation of an α,β-unsaturated carbonyl compound of formula I (R1 is H or an organic group; R2 to R4 are each H or a 1-4C alkyl) with hydrogen in the presence of powdery palladium and/or rhodium and an organic group while performing the regeneration of the product and the circulation of hydrogen gas in a bubble packed column reactor. The packing material in the bubble column reactor preferably has a hydraulic diameter of 0.5-20 mm and a surface roughness of 0.1 to 10 times the average particle diameter of the powdery catalyst particles at the opening or the channel wall part of the packing material and is made of a metallic material, a plastic material, etc.

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