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1.发明专利
公开(公告)号：DE2753153A1
公开(公告)日：1979-06-07
申请号：DE2753153
申请日：1977-11-29
Applicant: BASF AG
Abstract: A lifting mixer for heat, mass transfer or mixing operations with or without chemical reactions consists of a paddle assembly on a vertical shaft in a mixing vessel which performs a periodical axial lifting motion. The blades of the paddles are inclined to the horizontal at an angle of 10-60 degrees (20-45 degrees) and their spacing on the axial shaft equals at least the amount of the lift. This impresses on the fluid a velocity with axial and radial components and combines a high mixing intensity with a much lower energy consumption, compared with conventional mixers.
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公开(公告)号：DE2706078A1
公开(公告)日：1978-08-17
申请号：DE2706078
申请日：1977-02-12
Applicant: BASF AG
Inventor： EXNER KLAUS DIPL ING , ZEHNER PETER DIPL ING DR
Abstract: A device for increasing the speed of flow, is used in the circulating pit of an effluent clarification plant, in which a partition divides the pit to promote flow around it and the liquid is gasified or aerated by agitators. Teh deflection zone immediately adjacent to the end of the partition is shielded from the field of nfluence of hte agitator by a semi-rotationally symmetrical hollow object. Pref. where surface agitators are used, the hollow object is conical. In an activated sludge tank, the amt. of agitation required for biologicla purposes is frequently less than the amt. required to promote sufficient speed of circulation to prevent settling of the sludge. The reason for this is the recirculating effect in the immediate vicinity of each agitator. By protecting the ends of the partition walls, this recirculating effect is suppressed and an improved circulation throughout the tank is achieved for a given degree of power supplied to the agitators.
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公开(公告)号：DE2703809A1
公开(公告)日：1978-08-10
申请号：DE2703809
申请日：1977-01-29
Applicant: BASF AG
Abstract: The process introduces oxygen and forms activated sludge suspension in activation basins. The reaction impulse occurring with self-priming or compressed air-operated spray nozzles or ejectors is used to move the gasification unit over the floor of the activation basin. Turbulence generation in the sludge can be aided by rotary compressor bodies. The design ensures that the ventilation units necessary for oxygen introduction can also be relied on to keep the sludge in suspension.
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公开(公告)号：DE2637108A1
公开(公告)日：1978-02-23
申请号：DE2637108
申请日：1976-08-18
Applicant: BASF AG
Inventor： ENGELHARDT HUBERT DIPL ING , GLEICH WOLFGANG ING GRAD , KUERTEN HERIBERT DIPL ING DR , LEIB HEINZ DIPL ING , NAGEL OTTO DIPL ING DR , ZEHNER PETER DIPL ING DR
Abstract: The immediate spray area of the stirrer is protected with a dome having 2-6 (pref. 2.5-4) times the stirrer's diameter. The air stream which is carried along by the dome's walls which dip into the liquid, pref. in the form of fine bubbles, is 0.05-2 times (pref. 0.2-0.5 times) the water stream agitated by the stirrer. The activated sludge is also kept in suspension. Only the immediate stirrer area of the tank need be covered. Pref. the moment of the stirrer and dome is 1.5-3 times that of an unprotected stirrer at the same depth of immersion and speed of rotation.
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公开(公告)号：DE2410570A1
公开(公告)日：1975-09-25
申请号：DE2410570
申请日：1974-03-06
Applicant: BASF AG
IPC: B01F3/04 , B01F3/08 , B01F5/00 , B01F5/02 , F04F5/04 , F04F5/10 , F04F5/46 , F04F5/54 , B01F3/00
Abstract: A process for drawing in and compressing gases and mixing the same with liquid material, wherein the gases are first premixed with one or more liquid jets at a velocity of from 10 to 70 m/sec, the smallest cross-sectional area of the mixing nozzle being at a distance from the propulsive jet which is equal to from 1 to 10 times the smallest hydraulic diameter of the mixing nozzle, which smallest cross-sectional area of the mixing nozzle is equal to from 1.5 to 15 times the smallest cross-sectional area of the propulsive jet. The two-phase liquid mixture is passed through the mixing nozzle to the narrowest point of an impulse exchange tube disposed in the liquid medium, which impulse exchange tube is open at its inlet and outlet and is preferably provided with a diffuser. The smallest cross-sectional area of the impulse exchange tube is equal to from 1.2 to 20 times the smallest cross-sectional area of the mixing nozzle and the length of the impulse exchange tube is up to 20 times its smallest hydraulic diameter.
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Patent Agency Ranking
公开(公告)号：DE3049181A1
公开(公告)日：1982-07-29
申请号：DE3049181
申请日：1980-12-24
Applicant: BASF AG
Inventor： EIGENBERGER GERHART DIPL ING D , KUERTEN HERIBERT DIPL ING DR , ZEHNER PETER DIPL ING DR , LACKNER BRUNO ING GRAD , WITTWER ARNOLD DIPL CHEM DR
Abstract: In exothermic reactions between liq. and gases on catalytically acting fixed bed fillings in tubular reactors, where reaction enthalpy is mostly removed by the gas stream, the bed of catalyst or of material contg. catalyst is interrupted by layers of material with no catalytic effect. The catalytically neutral material may be the catalyst carrier itself, but is pref. Pall rings, Raschig rings or saddle bodies, so dimensioned that catalyst cannot penetrate. A filling with 50cm. layer of Pall rings, each 15 mm long, alternating with 1 metre layers of catalyst kept the temp. of a known reaction below 300 deg.C, whereas over 500 deg.C had been recorded in the uninterrupted catalyst body. Useful for high pressure hydrogenation with gas fed through external coolers, and reduces the incidence of uncontrolled temp. rises which can damage the catalyst.
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公开(公告)号：DE2525020A1
公开(公告)日：1976-12-16
申请号：DE2525020
申请日：1975-06-05
Applicant: BASF AG
Inventor： SCHUSTER HANS DR , ZEHNER PETER DIPL ING DR
Abstract: An apparatus for thoroughly mixing components of fluid material and, more particularly, for combining and homogenizing streams of gaseous, liquid and/or granular material by passage through a tube-like conduit which contains a plurality of consecutive mixing elements comprising a set of stationary, angularly disposed flow-deflecting baffles of particular form and configuration which cause a repeated dividing, displacement and recombining of the fluid stream and thereby provide improved radial mixing and approximation of ideal plug flow.
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公开(公告)号：DE2810648A1
公开(公告)日：1979-09-13
申请号：DE2810648
申请日：1978-03-11
Applicant: BASF AG
Inventor： SCHUSTER HANS H DIPL CHEM DR , ZEHNER PETER DIPL ING DR
Abstract: Parent patent 2525020 described a mixer for fluid materials, consisting of a tube with mixing elements in the shape of inclined intersecting guide surfaces which are provided with passage openings. These split the fluid stream into many side streams. Each element is elliptical, with an angle of 30 degrees - 60 degrees to the centre line; an elliptical opening with a minor axis amounting to 0.4-0.6 times the tube dia. is punched out and the punched out disc is welded at right angles to the main element. The circular holes in the elements pref. have the punched out part adhering to the element but at an acute angle.
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公开(公告)号：DE2810644A1
公开(公告)日：1979-09-13
申请号：DE2810644
申请日：1978-03-11
Applicant: BASF AG
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