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.

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.

公开(公告)号：CA1206725A

公开(公告)日：1986-07-02

申请号：CA424815

申请日：1983-03-29

Applicant: HOECHST AG

Inventor： WOLTER MANFRED ,  DORN FRIEDRICH-WILHELM ,  HEYMER GERO ,  STEPHAN HANS-WERNER

IPC: B01D25/12 ,  C09C1/48 ,  C10G31/09 ,  C10K1/10

Abstract: PROCESS FOR SEPARATING CARBON BLACK FROM AN AQUEOUS SUSPENSION The disclosure relates to a process for the discontinuous separation of a solid consisting predominantly of carbon black from its aqueous suspension by filtration. To this end, the disclosure provides for use to be made of a tube pressure filter which is operated under a final pressure of 30 to 100 bars.

公开(公告)号：DD209745A5

公开(公告)日：1984-05-23

申请号：DD25018483

申请日：1983-04-25

Applicant: HOECHST AG

Inventor： WOLTER MANFRED ,  DORN FRIEDRICH-WILHELM ,  HEYMER GERO ,  STEPHAN HANS-WERNER

IPC: B01D25/12 ,  C09C1/48 ,  C10G31/09 ,  B01D29/10

Abstract: The disclosure relates to a process for the discontinuous separation of a solid consisting predominantly of carbon black from its aqueous suspension by filtration. To this end, the disclosure provides for use to be made of a tube pressure filter which is operated under a final pressure of 30 to 100 bars.

公开(公告)号：CA1150933A

公开(公告)日：1983-08-02

申请号：CA366306

申请日：1980-12-08

Applicant: HOECHST AG

Inventor： KANDLER JOACHIM ,  WOLTER MANFRED

IPC: C09C1/48 ,  C09C1/56 ,  C01B31/02

Abstract: PROCESS FOR REMOVING CARBON BLACK FROM AQUEOUS SUSPENSIONS The invention relates to a process for removing carbon black from an aqueous suspension obtained by washing a gas containing carbon black with water. To this end, a gas stream comprising hydrocarbons and at least one inert gas is introduced into a suspension having a solids content of from 0.5 to 4 % by weight, at a temperature of from 10 to 80.degree. C. In so doing, the carbon black agglomerates and collects on the surface of the suspension water from which it is separated, for example by skimming it off. The gas stream is produced by passing inert gas over the separated carbon black containing the hydrocarbons and heated to 200 to 400.degree. C, the carbon black being converted into a dry, free-flowing material.

公开(公告)号：CA1142325A

公开(公告)日：1983-03-08

申请号：CA364041

申请日：1980-11-05

Applicant: HOECHST AG

Inventor： WOLTER MANFRED ,  HEYMER GERO

IPC: C22B3/00 ,  C09C1/00 ,  C09C1/56 ,  C21B15/00 ,  C22B3/20 ,  C22B7/00 ,  C22B7/02 ,  C01B31/02

Abstract: The invention relates to a process for the removal of metals, especially of iron/or nickel and/or vanadium or their compounds, from carbon black. To this end, the invention provides for an aqueous carbon black suspension to be heated to a temperature of about 30 to 90.degree. C, for chlorine to be passed therethrough with agitation. The chlorine gas is used in a stoichiometric excess, based on the metal content of the aqueous carbon black suspension. Next, the carbon black is separated from the aqueous suspension and dried.

公开(公告)号：DD154221A5

公开(公告)日：1982-03-03

申请号：DD22506480

申请日：1980-11-06

Applicant: HOECHST AG

Inventor： WOLTER MANFRED ,  HEYMER GERO

IPC: C22B3/00 ,  C09C1/00 ,  C09C1/56 ,  C21B15/00 ,  C22B3/20 ,  C22B7/00 ,  C22B7/02