Title:
CONTINUOUS PRODUCTION OF SALT HARDLY SOLUBLE IN WATER
Document Type and Number:
Japanese Patent JP2973062
Kind Code:
B2
Abstract:
PURPOSE: To stably and continuously obtain a salt hardly soluble in water and of a uniform size by circulating a part of the produced slurry to a tube reactor when the salt hardly soluble water is produced by continuously supplying two or more kinds of source materials to the tube reactor to effect the reaction.
CONSTITUTION: Two or more kinds of source materials are contiuously supplied from the source material tanks 11, 12 to a tube reactor 6 where the source materials are mixed to effect the reaction to produce the salt hardly soluble in water. The produced slurry is reserved in a liquid reserving tank 15. In this process, a part of the produced slurry containing the salt discharged from the reactor 6 is circulated to the source material or the reactor 6 by using a slurry pump 16. Thus, the salt hardly soluble in water is produced in the presence of the produced slurry. Thereby, even when a salt hardly soluble in water and having a high reaction rate is to be produced by the reaction, such a salt having uniform particle size and crystal shape and suitable as a pigment, such as barium sulfate, can be continuously produced.
Inventors:
MYOSHI KAZUHITO
TSUKAHARA ITSURO
KOIKE TOSHIMITSU
YODA KOJI
TSUKAHARA ITSURO
KOIKE TOSHIMITSU
YODA KOJI
Application Number:
JP35842992A
Publication Date:
November 08, 1999
Filing Date:
December 25, 1992
Export Citation:
Assignee:
KAO KK
International Classes:
C01F11/46; B01J14/00; (IPC1-7): C01F11/46; B01J14/00
Domestic Patent References:
| JP50115677A | ||||
| JP61138529A | ||||
| JP5033985B2 | ||||
| JP349577B1 | ||||
| JP4732919B1 |
Other References:
渡会正三著「工業反応装置」（昭３５−１０−３０）日刊工業新聞社ｐ５６−６１
Attorney, Agent or Firm:
Yoshinori Hosoda
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