Title:
PURIFICATION OF LURGI TAR ACID
Document Type and Number:
Japanese Patent JPS5912987
Kind Code:
A
Abstract:
There is disclosed a process for removing tar bases and neutral oils from the Lurgi tar acids by treating the tar acids with aqueous sodium bisulfate to change the tar bases to salts and to hydrolyze the neutral oils to hydrolysis products and distilling the tar acids to obtain refined tar acid as the distillate while the tar base salts and neutral oil hydrolysis products remain as residue.
Inventors:
NIKORASU PII GUREKO
Application Number:
JP8067183A
Publication Date:
January 23, 1984
Filing Date:
May 09, 1983
Export Citation:
Assignee:
KOPPERS CO INC
International Classes:
C10C1/20; C10C1/00; (IPC1-7): C10C1/00
Attorney, Agent or Firm:
Minoru Nakamura