METHOD FOR REMOVING HYDRAZINE COMPOUND - CHIYODA CHEM ENG CONSTRUCT CO

Title:

METHOD FOR REMOVING HYDRAZINE COMPOUND

Document Type and Number:

Japanese Patent JP2002079279

Kind Code:

A

Abstract:

To develop a method for efficiently removing a hydrazine compound in an aqueous solution.

The aqueous solution containing the hydrazine compound is brought into contact with oxygen-containing gas in the presence of at least one element, which is selected from iron, manganese, zinc, chromium nickel, cobalt and copper, under a condition of pH 7 or more. In this case, a part or the whole of the oxygen-containing gas is circulated to remove the hydrazine compound in the aqueous solution.

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Inventors:

NAKATANI DAIGO
YOSHIDA KIYOSHI
NAGATA SHINSUKE
MASUMOTO ISAMU
NIIYAMA SHUHEI
IMAMURA YASUO
NAKANISHI TOICHI
UEMURA FUMIHIKO

Application Number:

JP2000274925A

Publication Date:

March 19, 2002

Filing Date:

September 11, 2000

Export Citation:

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Assignee:

CHIYODA CHEM ENG CONSTRUCT CO
MITSUBISHI GAS CHEMICAL CO

International Classes:

C02F3/12; C02F1/74; (IPC1-7): C02F1/74; C02F3/12

Attorney, Agent or Firm:

Otani Ho

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