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    11.
    发明专利
    未知

    公开(公告)号：NO781842L

    公开(公告)日：1978-11-29

    申请号：NO781842

    申请日：1978-05-26

    Applicant: BASF AG

    Inventor： STOCKBURGER DIETER ,  VOLKAMER KLAUS ,  BENDER DETLEF ,  SCHNEIDER KLAUS-JUERGEN ,  SCHWENTKER HARALD ,  WAGNER ULRICH ,  WEITZ HANS-MARTIN

    IPC: B01D3/40 ,  C07C1/00 ,  C07C7/08 ,  C07C9/00 ,  C07C11/00 ,  C07C11/167 ,  C07C67/00 ,  C07C

    Abstract: A process for separating, by means of a selective solvent, a mixture of C4-hydrocarbons which contains some hydrocarbons which are more soluble in the selective solvent and some which are less soluble therein, in which process the hydrocarbon mixture is separated, in an extractive distillation zone, into a top product which contains the less soluble hydrocarbons and an extract which contains the more soluble hydrocarbons and the selective solvent, the extract, taken off as the bottom product, is subjected to a flash evaporation and the resulting vapor component of the extract is recycled to the extractive distillation zone while the liquid phase remaining after the flash evaporation is fed to a solvent recovery zone, in which the liquid phase obtained from the flash evaporation is separated into a product containing the hydrocarbons and, as the bottom product, the selective solvent which has been freed from the hydrocarbons, the resulting selective solvent is recycled to the extractive distillation zone and the product which is obtained from the solvent recovery zone and contains the hydrocarbons is partially or completely recycled to the extractive distillation zone, after increasing the pressure in a compression zone, in which process the extract taken off the extractive distillation zone is brought, prior to the flash evaporation to a higher pressure than the pressure in the extractive distillation zone and thereafter the extract which is under this higher pressure is heated, in a heat exchange zone, by indirect heat exchange with the selective solvent obtained as the bottom product from the solvent recovery zone, and the heated extract is subsequently let down, in the flash evaporation, to a pressure which is at least equal to the pressure in the extractive distillation zone and is higher than the pressure in the solvent recovery zone.

    Processing hydrocarbons or chlorinated hydrocarbons containing carbon black
    15.
    发明专利
    Processing hydrocarbons or chlorinated hydrocarbons containing carbon black 未知

    公开(公告)号：GB1149950A

    公开(公告)日：1969-04-23

    申请号：GB3881866

    申请日：1966-08-31

    Applicant: BASF AG

    Inventor： STOCKBURGER DIETER ,  SINN RICHARD ,  RAICHLE LUDWIG ,  BUSCHMANN KARL ,  STEGE WOLF-DIETER

    IPC: C09C1/56

    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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