Title:
PRODUCTION OF CARBON BLACK
Document Type and Number:
Japanese Patent JP3900745
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a process for producing carbon black by the oil furnace method giving high production yield and productivity and excellent operational stability.
SOLUTION: In the process for producing carbon black which uses a cylindrical reaction furnace having a combustion zone in the furnace nose, a feedstock introduction zone, a reaction zone, and a reaction termination zone which are coaxially arranged and comprises a combustion step of burning a fuel in the combustion zone to form a high temperature combustion gas; a feedstock introduction step of introducing a feedstock of hydrocarbons from the direction at a right angle to a high temperature combustion stream into the feedstock introduction zone; a reaction step of converting the feedstock of the hydrocarbons into carbon black by thermal decomposition reaction in the consecutive reaction zone; and a reaction termination step of quenching the reaction product gas stream to complete the reaction in the reaction termination zone, the feedstock of the hydrocarbons to be introduced in the feedstock introduction step is introduced in an atomized state with oxygen at the position of 20-600 mm on this side of the outlet of the feedstock introduction zone and further, the furnace has a structure in which the inner diameter of the reaction zone is smaller than that of the feedstock introduction zone.
Inventors:
Shinichi Makino
Application Number:
JP16779799A
Publication Date:
April 04, 2007
Filing Date:
June 15, 1999
Export Citation:
Assignee:
Tokai Carbon Co., Ltd.
International Classes:
C09C1/50; (IPC1-7): C09C1/50
Domestic Patent References:
| JP2308868A | ||||
| JP63264673A | ||||
| JP60166348A |
Attorney, Agent or Firm:
Yasuo Fukuda
Kenji Akatsuka
Kenji Akatsuka