Title:
RECOVERY OF USEFUL COMPONENT IN PRODUCED TAR ON PRODUCING PHENOL
Document Type and Number:
Japanese Patent JPH0940592
Kind Code:
A
Abstract:
To recover a useful component in the produced tar on producing phenol at a high efficiency.
This method for recovering a useful component in the produced tar on producing phenol by the liquid phase oxidation reaction of benzoic acid is to extract and recover the useful components by using a multiple stage water extracting process at the weight ratio of extracting water to tar in the range of 0.8-1.1 at the first stage extraction process and 7-10 at the second and following stages.
Inventors:
ONISHI SHOHEI
IWAKI TSUTOMU
HARADA YASUO
NAGASE MASANORI
OKABAYASHI NAOYA
IWAKI TSUTOMU
HARADA YASUO
NAGASE MASANORI
OKABAYASHI NAOYA
Application Number:
JP19349695A
Publication Date:
February 10, 1997
Filing Date:
July 28, 1995
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL CO
International Classes:
C07C37/56; C07C37/72; C07C39/04; (IPC1-7): C07C39/04; C07C37/56; C07C37/72
Attorney, Agent or Firm:
Hiromitsu Fujimoto (1 outside)
Next Patent: PRODUCTION OF ETHER COMPOUND