1.
    发明专利
    未知

    公开(公告)号:DE1557018A1

    公开(公告)日:1970-03-12

    申请号:DEB0086601

    申请日:1966-04-09

    Applicant: BASF AG

    Abstract: 1,173,812. Circulation mixers. BADISCHE ANILIN-& SODA-FABRIK A.G. 7 April, 1967 [9 April, 1966], No. 16065/67. Heading B1C. [Also in Division C2] In a process and apparatus for mixing gas and liquid into a liquid medium, the gas and liquid (which has a velocity of 5-100 m/sec) are injected through nozzles into an openended chamber the mean inlet diameter of which is twice to twenty times the mean diameter of the liquid nozzle, and the length of of which is three to thirty times the diameter of the equivalent cylindrical tube (if the chamber is not of circular cross-section). As shown the chamber is a tube 3; liquid and gas are injected by coaxial nozzles 1, 2; and mixture is discharged at 10. Part of the liquid is externally recirculated by a pump 9, and there may be a tube 7 through which internal circulation in either direction may take place on the air lift principle with the assistance of guide baffles (not depicted). The chamber may be a conical frustum, or (see Fig. 2, not shown) annular (3) in conjunction with radial nozzles (1, 2) in star formation. The process may be applied to the oxidation of hydrocarbons especially cyclohexane.

    2.
    发明专利
    未知

    公开(公告)号:DE1545234A1

    公开(公告)日:1969-06-26

    申请号:DE1545234

    申请日:1965-09-01

    Applicant: BASF AG

    Abstract: 1,149,950. Coking; recovering hydrocarbon quench oils. BADISCHE ANILIN- & SODAFABRIK A.G. 31 Aug., 1966 [1 Sept., 1965], No. 38818/66. Heading C5E. Hydrocarbons and chlorinated hydrocarbons containing carbon black, e.g. obtained by washing hot gases, are recovered and particulate coke is produced from the carbon black by atomizing the hydrocarbons containing the carbon black and contacting the atomized material with a stream of hot gas to evaporate the hydrocarbons without cracking them. Hydrocarbons boiling in the range 140‹ to 350‹ C., e.g. propylbenzene, xylenes, naphthalene, and chloronaphthalene are mentioned and the hot gas stream should be free of oxygen, halogens and halohydrocarbons, examples being superheated steam, superheated hydrocarbon vapour, nitrogen, flue gas and cracked gas, and the maximum temperature is 800‹ C. A binder, e.g. resins, asphalt or bitumen, may be added to the mixture to be treated. The coke particles are separated from the gas/vapour stream and the hydrocarbons are recovered therefrom by conventional methods. Concurrent or counter-current contacting of the gas with the hydrocarbon may be employed, and in one embodiment (see Fig. 3, not shown), coking &c. is completed in a fluidized bed. The gas may be recycled after recovering the hydrocarbons therefrom. An example is described.

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