PRODUCTION OF SODIUM PERCARBONATE - CENTRAL GLASS CO LTD

Title:

PRODUCTION OF SODIUM PERCARBONATE

Document Type and Number:

Japanese Patent JPH0624714

Kind Code:

A

Abstract:

PURPOSE: To obtain sodium percarbonate having excellent granulating properties by readily controlling particle diameters of sodium percarbonate useful as a bleaching agent.

CONSTITUTION: In a method for producing sodium percarbonate by reacting sodium carbonate with hydrogen peroxide and crystallization, a preplacing crystallization tank for forming seed crystal is installed before a reaction tank and seed crystal formed in the preplacing crystallization tank is thrown to a reaction tank to control the size of sodium percarbonate precipitated. Consequently, the particle size of formed sodium percarbonate is readily controlled to ≤ about 50μm, the yield in granulation is extremely high and powdering can be avoided.

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Inventors:

MUNENO YASUSHI
SASAKI HIROMI
UEDA YOJI
YAMAMOTO SUNAO

Application Number:

JP17862792A

Publication Date:

February 01, 1994

Filing Date:

July 06, 1992

Export Citation:

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Assignee:

CENTRAL GLASS CO LTD

International Classes:

C01B15/10; B01D9/02; (IPC1-7): C01B15/10; B01D9/02

Attorney, Agent or Firm:

Eiichi Sakamoto

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