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Title:
REMOVAL OF BENZENE
Document Type and Number:
Japanese Patent JPH06228128
Kind Code:
A
Abstract:

PURPOSE: To remove benzene from a benzene-containing aqueous solution and recover the remaining active components.

CONSTITUTION: Benzene is removed from a benzene-containing aqueous solution by-produced in the synthesis of trioxane. The benzene-removing process is carried out by supplying the benzene-containing aqueous solution to the intermediate stage of a distillation column, extracting vapor composed mainly of methyl formate and methylal from the column top, extracting a component containing benzene and methanol from stages above the feeding stage and extracting a component containing water, formaldehyde and methanol and essentially free from benzene from the column bottom.


Inventors:
TANIGAWA YUKIO
MORISHITA HIROHISA
MASAMOTO JUNZO
Application Number:
JP2024193A
Publication Date:
August 16, 1994
Filing Date:
February 08, 1993
Export Citation:
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Assignee:
ASAHI CHEMICAL IND
International Classes:
C07C31/04; B01D3/00; C07D323/06; C10G7/00; (IPC1-7): C07D323/06; B01D3/00; C07C31/04; C10G7/00