Process for recovering bromine from waste liquid

Patent · Tue Apr 13 00:00:00 EST 1982

OSTI ID:5052139

Ikeda, M; Mohri, A; Ota, K; Yamada, T; Yokomichi, I

This is a process for recovering bromine from a waste liquid formed in the production of an aniline derivative by ammonolysis of a nuclear substituted bromobenzene derivative with a halogen atom or a functional group. The waste liquid is first subjected to chlorine treatment in alkaline region to remove most part of ammonia and aniline derivatives, and then it is subjected to chlorine treatment in acidic region to recover bromine. The process does not involve danger of explosion accidents and can be smoothly operated.

• Assignee: Ishihara Sangyo Kaisha Ltd (Japan); Nissan Chemical Industries Ltd (Japan)
• Patent Number(s): US 4324665
• OSTI ID: 5052139
• Resource Relation: Patent Priority Date: Priority date 5 Mar 1979, Japan; Other Information: PAT-APPL-201404
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
BROMINE
MATERIALS RECOVERY
CHEMICAL INDUSTRY
LIQUID WASTES
WASTE MANAGEMENT
AMMONOLYSIS
ANILINE
CHLORINE
AMINES
AROMATICS
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HALOGENS
INDUSTRY
MANAGEMENT
NONMETALS
ORGANIC COMPOUNDS
PROCESSING
RECOVERY
SOLVOLYSIS
WASTE PROCESSING
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management