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    PROCESS AND APPARATUS FOR IMPROVING THE DEGREE OF GRAPHITIZATION OF CARBON BLACK, AND ITS USES
    11.
    发明专利
    PROCESS AND APPARATUS FOR IMPROVING THE DEGREE OF GRAPHITIZATION OF CARBON BLACK, AND ITS USES 未知

    公开(公告)号：CA1139921A

    公开(公告)日：1983-01-25

    申请号：CA337447

    申请日：1979-10-12

    Applicant: HOECHST AG

    Inventor： DORN FRIEDRICH-WILHELM ,  WOLTER MANFRED ,  HEYMER GERO

    IPC: C09C1/00 ,  C01B31/04 ,  C09C1/56 ,  F27B9/06 ,  H01M4/62

    Abstract: The invention relates to a process for improving the degree of graphitization of carbon black produced by subjecting hydrocarbons which are liquid or gaseous under normal conditions to a thermal conversion reaction in the presence of oxygen or an oxygen-containing gas and steam, if desired, at temperatures of 1200 to 2000.degree. C and pressures of 1 to 80 bars. To this end, the carbon black is conveyed downwardly in a quasi-fluid state, within 1 to 5 hours through a sojourn zone in upright position, the sojourn zone being maintained at a temperature of at least 1200.degree. C. The invention also relates to an apparatus for carrying out this process, the apparatus comprising a graphite tube; a steel container concentrically surrounding the graphite tube; a feed pipe penetrating into the interior of the graphite tube; a water-cooled discharge means; and a nitrogen feed inlet arranged below the lower end of the graphite tube; the space left between the graphite tube and steel container being occupied by insulating material.

    12.
    发明专利
    未知

    公开(公告)号：DD146710A5

    公开(公告)日：1981-02-25

    申请号：DD21634779

    申请日：1979-10-19

    Applicant: HOECHST AG

    Inventor： DORN FRIEDRICH-WILHELM ,  WOLTER MANFRED ,  HEYMER GERO

    IPC: C09C1/00 ,  C01B31/04 ,  C09C1/56 ,  F27B9/06 ,  H01M4/62

    Abstract: The invention relates to improving the degree of graphitization of carbon black produced by subjecting hydrocarbons which are liquid or gaseous under normal conditions to a thermal conversion reaction in the presence of oxygen or an oxygen-containing gas and steam, if desired, at temperatures of 1200 DEG to 2000 DEG C. and pressures of 1 to 80 bars. To this end, the carbon black is conveyed downwardly in a quasi-fluid state, within 1 to 5 hours through a sojourn zone in upright position, the sojourn zone being maintained at a temperature of at least 1200 DEG C. The invention relates to an apparatus for carrying out this process, the apparatus comprising a graphite tube; a steel container concentrically surrounding the graphite tube; a feed pipe penetrating into the interior of the graphite tube; a water-cooled discharge means; and a nitrogen feed inlet arranged below the lower end of the graphite tube; the space left between the graphite tube and steel container being occupied by insulating material.

    13.
    发明专利
    未知

    公开(公告)号：NO304934B1

    公开(公告)日：1999-03-08

    申请号：NO912333

    申请日：1991-06-17

    Applicant: HOECHST AG

    Inventor： HOLZEM JOHANNES ,  DORN FRIEDRICH-WILHELM ,  BOCK JOACHIM ,  PREISLER EBERHARD

    IPC: C01G1/00 ,  B22D13/02 ,  B28B21/30 ,  C01G29/00 ,  C04B35/00 ,  C04B35/45 ,  C04B35/653 ,  C04B41/80 ,  H01B12/02 ,  H01L39/24

    Abstract: For the production of tube-shaped mouldings of high-temperature superconductor material based on oxides of bismuth, calcium, strontium and copper, a homogeneous melt of the oxide mixture is allowed to run in a predetermined stoichiometry at temperatures from 900 to 1100 DEG C into a casting zone rotating about its horizontal axis. The solidified moulding is taken out of the casting zone and heat-treated for 4 to 150 hours at 700 to 900 DEG C in an oxygen-containing atmosphere. A plant for producing tube-shaped mouldings consists of a rotatably mounted mould (4, 9) which is provided at least on one end face with an end ring 6 reducing its free cross-section, a casting chute 7 protruding into the interior of the mould (4, 9) and a crucible 8 which is arranged above the casting chute 7 and through which the casting chute 7 can be charged with melt.

    14.
    发明专利
    未知

    公开(公告)号：NO912333L

    公开(公告)日：1991-12-19

    申请号：NO912333

    申请日：1991-06-17

    Applicant: HOECHST AG

    Inventor： HOLZEM JOHANNES ,  DORN FRIEDRICH-WILHELM ,  BOCK JOACHIM ,  PREISLER EBERHARD

    IPC: C01G1/00 ,  B22D13/02 ,  B28B21/30 ,  C01G29/00 ,  C04B35/00 ,  C04B35/45 ,  C04B35/653 ,  C04B41/80 ,  H01B12/02 ,  H01L39/24 ,  C01G3/00 ,  C01F11/00 ,  C04B35/60 ,  H01L39/12

    Abstract: For the production of tube-shaped mouldings of high-temperature superconductor material based on oxides of bismuth, calcium, strontium and copper, a homogeneous melt of the oxide mixture is allowed to run in a predetermined stoichiometry at temperatures from 900 to 1100 DEG C into a casting zone rotating about its horizontal axis. The solidified moulding is taken out of the casting zone and heat-treated for 4 to 150 hours at 700 to 900 DEG C in an oxygen-containing atmosphere. A plant for producing tube-shaped mouldings consists of a rotatably mounted mould (4, 9) which is provided at least on one end face with an end ring 6 reducing its free cross-section, a casting chute 7 protruding into the interior of the mould (4, 9) and a crucible 8 which is arranged above the casting chute 7 and through which the casting chute 7 can be charged with melt.

    19.
    发明专利
    未知

    公开(公告)号：AT118202T

    公开(公告)日：1995-02-15

    申请号：AT92113510

    申请日：1992-08-07

    Applicant: HOECHST AG

    Inventor： DORN FRIEDRICH-WILHELM ,  SACHSE DIETER

    IPC: C01B31/02

    Abstract: In order to prepare a C60/C70 mixture called fullerene by evaporation of carbon at pressures from 0.05 to 3 bar, condensation of the gaseous carbon on cooled zones with the formation of a fullerene/soot mixture and separation of the fullerene from this mixture, the evaporation and condensation are carried out in oxygen-containing gases from the group comprising CO, CO2, O2 or mixtures thereof.

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