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    12.
    发明专利
    未知

    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

    Inventor： NAGEL OTTO DR ,  KUERTEN HERIBERT DIPL ING DR ,  ZEHNER PETER DIPL ING DR

    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.

    16.
    发明专利
    未知

    公开(公告)号：DE2400416A1

    公开(公告)日：1975-07-24

    申请号：DE2400416

    申请日：1974-01-05

    Applicant: BASF AG

    Inventor： HESS KLAUS DR ,  STICKEL RICHARD DIPL ING ,  NAGEL OTTO DR ,  SINN RICHARD PROF DR ING DR ,  DAUCHER HANS DIPL ING DR

    IPC: C02F3/22 ,  B01F3/04 ,  B01F3/08 ,  B01F5/02 ,  C02F3/12 ,  C02C1/06

    Abstract: Waste water and sewage, contg. biodegradable impurities, are treated in >=1 enclosures with dissolved oxygen and activated sludge. The contact between these three reacting materials is intensified by increasing the number of interfaces and by shortening the diffusion paths in the sludge floccules. Injectors are used to this effect with a liq. nozzle an annular, concentric nozzle for the gas and an impulse exchange tube. The jet of liq. leaves the nozzle at a speed of 29m/sec. and sets up a shear gradient in the activated sludge; the air bubbles are finely divided and at the same time the sludge is sucked into the zone of the jet and is intensely mixed in the tube. The sludge leaving the latter is satd. with oxygen and the gas it contains causes it to rise in the form of a bubbling column to the surface of the activated sludge, giving up its oxygen proportionally to the depth of immersion of the injector and the oxygen content of the gas. The quantity of sludge which can be treated per unit of vol. of a biological settlement plant per day can be increased by 100% as compared with known processes.

    18.
    发明专利
    未知

    公开(公告)号：DE2151206A1

    公开(公告)日：1973-04-19

    申请号：DE2151206

    申请日：1971-10-14

    Applicant: BASF AG

    Inventor： KUERTEN HERIBERT DR ,  NAGEL OTTO DR

    IPC: B01F3/04 ,  B01F3/08 ,  B01F5/02 ,  B01F5/04

    Abstract: 1407281 Mixing and emulsifying liquids BADISCHE ANILIN- & SODA-FABRIK AG 13 Oct 1972 [14 Oct 1971] 47272/72 Heading B1C In a method of making mixtures or emulsions of first and second liquids which differ widely in their density or volume ratio, one or more jets of a dispersing agent are injected at a velocity of 5-100 cu/s into a mass of the second liquid, the first liquid is introduced in the proximity of the jet, and the streams flow into an impulse exchange chamber which has a length of 2-30 times its average hydraulic diameter, which is 2-20 times the diameter of a circular nozzle of cross-sectional area equal to the sum of that of all the jet nozzles. The dispersing agent may be identical to the second liquid. In the apparatus of Fig. 1 dispersing agent from nozzle 1 and a first liquid from the annular nozzle 2 are injected into a mass of the second liquid in container 4 and are mixed in a mixing tube 2 which provides the impulse exchange chamber. In another arrangement, (Fig. 2, not shown) second liquid is continuously supplied to the container 4 and the impulse exchange chamber 3 forms the outlet conduit thereof. Examples relate to the mixing of hydrochloric acid and sodium hydroxide, the dispersion of metallic mercury in water, and to making an emulsion of paraffin oil and water with sodium lauryl sulphate as the dispersing agent.

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