Method and apparatus for mixing gas and liquid
    1.
    发明授权
    Method and apparatus for mixing gas and liquid 失效
    混合气体和液体的方法和装置

    公开(公告)号:US3833719A

    公开(公告)日:1974-09-03

    申请号:US22680872

    申请日:1972-02-16

    Applicant: BASF AG

    CPC classification number: C02F1/76 B01F5/0405 Y10S261/72

    Abstract: THE INVENTION RELATES TO A METHOD OF MIXING A GAS WITH LIQUIDS IN A TUBULAR REACTOR BY FEEDING THE GAS AND THE LIQUIDS TO A MIXING zONE. THE INVENTION ALSO RELATES TO AN SEPARATUS FOR CARRYING OUT THIS METHOD. RAPID MIXING ID EFFECTIVE BY FEEDING A STREAM OF LIQUID TO THE MIXING ZONE THROUGH ONE OR MORE NOZZELS WHOSE AXS EXTEND IN THE SAME DIRECTION AS THE AXIS OF THE MIXING ZONE, IN INJECTED LIQUID HAVING A VELOCITY OF FROM 5 TO 100 M./S., WHILST A SECOND STREAM OF LIQUID OF MUCH LOWER VELOCITY IS INTRODUCED INTO THE REACTOR INLET ZONE SURROUNDING SAID NOZZEL. THE GAS IS FED TO THE MIXING ZONE THROUGH ONE

    OR MORE GAS INLETS LOCATED NEAR THE ORIFIECES OF THE LIQUID NOZZELS. THE MEAN CROSS-SECTIONAL AREA OF THE MIXING ZONE BEARS A SPECIFIC RATIO TO THE CROSS-SECTIONAL AREA OF THE ORIFICES OF THE LIQUID NOZZLES AND THE LENGTH OF THE MIXING ZONE BEARS A SPECIFIC RATIO TO THE HYDROLIC DIAMETER THEREOF. THE METHOD AND APPARATUS ARE PARTICULARLY SUITABLE FOR CARRYING OUT REACTIONS IN WHICH SHORT RESIDENCE TIMES ARE DESIRABLE AND THE REACTION PRODUCTS MUST NOT RECONTACT THE STARTING MATERIALS.

    Exothermic catalytic hydrogenation of organic compounds in a liquid reaction medium
    2.
    发明授权
    Exothermic catalytic hydrogenation of organic compounds in a liquid reaction medium 失效
    有机化合物在液体反应介质中的超热催化加氢

    公开(公告)号:US3847989A

    公开(公告)日:1974-11-12

    申请号:US85880869

    申请日:1969-09-17

    Applicant: BASF AG

    Inventor: PLATZ R NAGEL O FUCHS W

    Abstract: 1. A PROCESS FOR CARRYING OUT AN EXOTHERMIC CATALYTIC HYDROGENATION WITH MOLECULAR HYDROGEN OF A CARBON-CARBON TRIPLE OR DOUBLE BOND, AN AROMATIC RING, A CARBONYL GROUP, A NITRO GROUP, A NITRILE GROUP, AN OXIME GROUP, AN AMINOIXDE GROUP, AN ACID CHLORIDE GROUP, A BENZYL ESTER GROUP, OR A BENZYL EHTER GROUP OF AN ORGANIC COMPOUND IN AN EXOTHERMIC REACTION IN A BODY OF LIQUID HAVING SUSPENDED OR DISSOLVED THEREIN A SOLID, FINELY DIVIDED HYDROGENATION CATALYST OF A CATALYTIC METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM, PALLADIUM, RHODIUM, RUTHENIUM, NICKEL AND COBALT, WHICH COMPRISES WITHDRAWING A PORTION OF SAID LIQUID FROM SAID BODY, RECYCLING THE WITHDRAWN PORTION BY INTRODUCING THE LATTER THROUGH A FIRST NOZZLE INTO SAID BODY OF LIQUID AT A POINT BELOW THE SURFACE OF SAID BODY AND INTO A SMALL CYLINDRICAL TUBE IMMERSED IN SAID BODY AND HAVING AN INLET, INTRODUCING HYDROGEN THROUGH ANOTHER NOZZLE IN SAID BODY OF LIQUID AND INTO SAID INLET OPENING, THE RECYCLED LIQUID HAVING A VELOCITY OF 5-100 METER PER SECOND AT ITS POINT OF INTRODUCTION INTO SAID BODY, THE RATIO OF THE VOLUME OF THE RECYCLED LIQUID TO THE VOLUME OF HYDROGEN INTRODUCED THROUGH THIER RESEPECTIVE NOZZLES BEING FROM 1:5 TO 1:01, THE EXOTHERMIC HYDROGENATION ACTION OCCURING IN SAID CYLINDRICAL TUBE AS THE HYDROGEN AND LIQUID JET FROM THE INLET OPENING OF SAID TUBE AND THROUGH SAID TUBE, INDUCING BY THE JETTING ACTION OF SAID LIQUID IN SAID BODY OF LIQUID IN SAID CYLINDIRCAL TUBE A CIRCULATION OF ADDITIONAL LIQUID DRAWN THROUGH SAID CYLINDRICAL TUBE IN AN AMOUNT OF ABOUT 10 TO 100 TIMES THE AMOUNT OF THE RECYCLED LIQUID SUPPLIED THROUGH SAID FIRST NOZZLE, SAID ADDITIONAL LIQUID ALSO DRAWN DISSIPATING IMMEDIATELY THE HEAT OF THE EXOTHERMIC HYDROGENATION ACTION IN SAID CYLINDRICAL TUBE, AND THE INLET OPENING OF SAID TUBE HAVING A MEAN DIAMETER OF 2 TO 20 TIMES THE MEAN DIAMETER OF SAID FIRST NOZZLE AND THE CYLINDRICAL TUBE HAVING A LENGTH OF 3 TO 30 TIMES ITS HYDRAULIC DIAMETER.

    Method and apparatus for mixing liquids
    3.
    发明授权
    Method and apparatus for mixing liquids 失效
    混合液体的方法和装置

    公开(公告)号:US3847375A

    公开(公告)日:1974-11-12

    申请号:US29703072

    申请日:1972-10-12

    Applicant: BASF AG

    Inventor: KUERTEN H NAGEL O

    CPC classification number: B01F5/0212 B01F3/04099 B01F3/0861

    Abstract: A method of rapidly mixing liquids which differ greatly from one another as regards their volume and/or density, to form emulsions or homogeneous mixtures. One or more jets of the liquid dispersing agent are passed through nozzles at a velocity up to 100 m/s to an impulse exchange chamber, which is located in the liquid medium and extends in the downstream direction, together with the liquid to be dispersed, which latter liquid is ejected in the immediate proximity of the orifice of the nozzles providing the propulsive jet. The average hydraulic diameter of the impulse exchange chamber is equal to from two to 20 times the diameter of that nozzle which is equal in cross-sectional area to all the nozzle orifices present, and its length is equal to from two to 30 times its hydraulic diameter.

    Abstract translation: 快速混合液体的方法,其相互之间的体积和/或密度彼此大不相同,以形成乳液或均匀的混合物。 液体分散剂的一个或多个射流以高达100m / s的速度通过喷嘴,与位于液体介质中的脉冲更换室一起,并与待分散的液体一起沿下游方向延伸, 后者的液体在提供推进射流的喷嘴的孔口附近被喷射。 脉冲更换室的平均水力直径等于该喷嘴的直径的2至20倍,其横截面积与存在的所有喷嘴孔相等,并且其长度等于其液压的2至30倍 直径。

    Continuous production of propylene chlorohydrin
    5.
    发明授权
    Continuous production of propylene chlorohydrin 失效
    连续生产丙烯氯酚

    公开(公告)号:US3845144A

    公开(公告)日:1974-10-29

    申请号:US13000071

    申请日:1971-03-31

    Applicant: BASF AG

    CPC classification number: C07C29/66 C07C31/36

    Abstract: 1. IN A PROCESS FOR CONTINUOUS PRODUCTION OF AN AQUEOUS SOLUTION OF PROPYLENE CHLOROHYDRIN BY REACTING PROPYLENE WITH AN AQUEOUS CHLORINE SOLUTION, RECYCLING SOME OF THE REACTION SOLUTION AND ADDING MAKE-UP WATER, THE IMPROVEMENT WHICH COMPRISES LOADING THE RECYCLED SOLUTION WITH CHLORINE TO SUCH AN EXTEND THAT THE LIMIT OF SOLUBILITY OF THE CHLORINE IS NOT EXCEEDED, BY MEANS OF A TWO FLUID NOZZLE, METERING THE PROPYLENE TO BE REACTED INTO THE CHLORINE-LADEN SOLUTION AT A PRESSURE OF FROM 2 TO 20 ATMOSPHERES ABSOLUTE AND AT A TEMPERATURE OFF FROM 10* TO 80* C., BY MEANS OF A TWO FLUID NOZZLE ALLOWING THE REACTION MIXTURE TO REACT IN ONE OR MORE PARALLEL TUBES WITH TUBULENT FLOW IN THE SAME PRESSURE RANGE WITH A RESIDENCE TIME OF NOT MORE THAN TEN SECONDS, RELEASING THE PRESSURE, WITHDRAWING SOME OF THE PROPYLENE CHLOROHYDRIN SOLUTION AS PRODUCT AND RECYCLING THE REMAINDER OF THE PROPYLENE CHLOROHYDRIN SOLUTION WHEREIN AT THE POINT OF INCORPORATION OF THE CHLORINE AS WELL AS AT THE POINT OF INCORPORATION OF PORPYLENE THE RECYCLE LIQUID IS INRODUCED AT A VELOCITY OF FROM 2 TO 100 METERS PER SECOND THROUGH SAID TWO-FLUID NOZZLES AND THEN INTO A MIXING ZONE EXTENDING IN THE DIRECTION OF FLOW WHOSE DIAMETER IS FROM 1.5 TO 50 TIMES THE MEAN OUTLET DIAMETER OF THE LIQUID NOZZLES AND WHOSE LENGTH IS FROM 3 TO 30 TIMES ITS HYDRAULIC DIAMETER, AND ALLOWING THE MIXTURE TO COMPLETE THE REACTION IN ONE OR MORE PARALLEL REACTION TUBES.

    7.
    发明专利
    未知

    公开(公告)号:SE339070B

    公开(公告)日:1971-09-27

    申请号:SE656669

    申请日:1969-05-08

    Applicant: BASF AG

    Abstract: A gas mixture (obtained by thermal cracking of hydrocarbons followed by quenching of the cracked gas and freed from carbon dioxide and water) is separated into a gas mixture containing hydrogen, carbon monoxide and methane and another gas mixture containing ethylene, acetylene and higher hydrocarbons by (a) cooling the gas mixture which is at superatmospheric pressure in at least one condensation stage to a temperature which is above the solidification temperature of acetylene mixed with the other condensed constituents, (b) separating the condensate thus obtained and subdividing it in a rectifying column into a first mixture containing C2 hydrocarbons and a second mixture containing C3 and higher hydrocarbons, and (c) freeing the residual gas remaining from (a) from residual acetylene and ethylene in a scrubber by treatment with some of the mixture consisting of C3 and higher hydrocarbons from (b).

    8.
    发明专利
    未知

    公开(公告)号:SE391744B

    公开(公告)日:1977-02-28

    申请号:SE7302085

    申请日:1973-02-14

    Applicant: BASF AG

    Abstract: 1413356 Fibrids of thermoplastic materials BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8938/73 Heading B5B Fibrids (i.e. short fibres) of a thermoplastics material are made by introducing a high-speed propulsive jet and a slower-moving stream of a liquid co-currently into a mixing tube arranged coaxially with the jet, whereby a shear gradient is set up in the mixing tube between the highspeed jet and the slower-moving liquid stream, and feeding the molten thermoplastics material through a die into the region of the shear gradient, whereby the thermoplastics material is broken up into fibres by the action of shear stresses within the region of the shear-gradient. Specified thermoplastics materials include polyethylene, polypropylene and their waxes and extended waxes, polyamides, polyesters, polyvinyl chloride and polystyrene. In Fig. 1, the apparatus is enclosed in container 4. Melt is supplied via 6 to outlet orifice 2; the spinning medium, suitably water, is supplied via 5 to the outlet orifice 1 of the propulsive jet; 3 is the impulse exchange chamber or mixing tube. If the relatively slow-moving stream of liquid entrained from the container is replaced by liquid coming from a pump, the container may be dispensed with, as in Fig. 2, where 7 is the feed-line for the slow-moving medium (water) spinning being effected in tube 3 which acts as impulse exchange chamber.

    9.
    发明专利
    未知

    公开(公告)号:SE366290B

    公开(公告)日:1974-04-22

    申请号:SE1426068

    申请日:1968-10-22

    Applicant: BASF AG

    Abstract: 1,236,068. Purifying cracked gas. BADISCHE ANILIN- & SODA-FABRIK A.G. 25 Oct., 1968 [27 Oct., 1967], No. 50666/68. Heading C5E. Cracked gas containing acetylene, ethylene and higher hydrocarbons is freed from water vapour by the following process sequence: (a) contacting the gas, with or without pro-drying by cooling, with methanol; (b) cooling the treated gas in a heat exchanger to condense the major portion of entrained methanol and separating the condensed liquid from uncondensed gas; (c) separating the methanolcontaining condensate (with or without liquified hydrocarbon mixture separated by further cooling from uncondensed gas resulting from stage (b)) in a rectifying column into an overhead consisting substantially of C 2 hydrocarbons and a bottoms consisting of C 3 and higher hydrocarbons and methanol; (d) extracting the bottoms product with water to recover methanol therefrom; (e) freeing the extract from water, e.g. by distillation, optionally simultaneously with removing water from the aqueous methanol resulting from step (a); and (f) returning regenerated methanol to step (a). Alternative methods of operating the process are described with the aid of flow-diagrams.

    10.
    发明专利
    未知

    公开(公告)号:DK682774A

    公开(公告)日:1975-09-08

    申请号:DK682774

    申请日:1974-12-27

    Applicant: BASF AG

    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.

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