Title:
SODIUM HYPOCHLORITE PENTAHYDRATE CRYSTAL PARTICLES HAVING HIGH BULK DENSITY, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2018/143221
Kind Code:
A1
Abstract:
Provided are: sodium hypochlorite pentahydrate crystal particles having a high bulk density, in which the crystal form of sodium hypochlorite pentahydrate is controlled so as to increase the bulk density of the crystal particles in a container and to increase the efficiency of the transport of the crystal particles; and a method for producing the crystal particles. An aqueous solution of sodium hypochlorite pentahydrate in a crystallization vessel is stirred or pump-circulated in a crystallization step to produce sodium hypochlorite pentahydrate crystal particles having an average aspect ratio of 2.5 or less.
Inventors:
SHIMAZU HIDEO (JP)
OKADA TOMOHIDE (JP)
ASAWA TOMOTAKE (JP)
ITO HIROMICHI (JP)
SUGIYAMA YUKIHIRO (JP)
SHIMADA KAORU (JP)
OKADA TOMOHIDE (JP)
ASAWA TOMOTAKE (JP)
ITO HIROMICHI (JP)
SUGIYAMA YUKIHIRO (JP)
SHIMADA KAORU (JP)
Application Number:
PCT/JP2018/003044
Publication Date:
August 09, 2018
Filing Date:
January 30, 2018
Export Citation:
Assignee:
NIPPON LIGHT METAL CO (JP)
International Classes:
C01B11/06; B01D9/02
Foreign References:
| JP2015124108A | 2015-07-06 | |||
| JP2014169215A | 2014-09-18 | |||
| JP2000290003A | 2000-10-17 | |||
| JP2014088276A | 2014-05-15 | |||
| JPS63294953A | 1988-12-01 |
Other References:
OOSHIMA, HIROSHI: "Industrial Crystallization : Crystal Size Distribution and Crystal Polymorphs 'MechanismofNucleation", THE SOCIELY OF POWDER TECHNOLOGY, vol. 38, 2001, pages 251 - 259
ADAM, L. C.: "Hypochlorite Ion Decomposition: Effects of Temperature, Ionic Strength, and Chloride Ion", INORGANIC CHEMISTRY, vol. 38, 20 February 1999 (1999-02-20), pages 1299 - 1304, XP055530434
ASAWA, TOMOTAKE ET AL.: "The Placing of Crystalline Sodium Hypochlorite Pentahydrate on the Market", JOURNAL OF ION EXCHANGE, vol. 27, 21 September 2016 (2016-09-21), pages 42 - 46, XP055530440
TER HORST, J. H. ET AL.: "Fundamentals of Industrial Crystallization", HANDBOOK OF CRYSTAL GROWTH, 2015, pages 1317 - 1349
ADAM, L. C.: "Hypochlorite Ion Decomposition: Effects of Temperature, Ionic Strength, and Chloride Ion", INORGANIC CHEMISTRY, vol. 38, 20 February 1999 (1999-02-20), pages 1299 - 1304, XP055530434
ASAWA, TOMOTAKE ET AL.: "The Placing of Crystalline Sodium Hypochlorite Pentahydrate on the Market", JOURNAL OF ION EXCHANGE, vol. 27, 21 September 2016 (2016-09-21), pages 42 - 46, XP055530440
TER HORST, J. H. ET AL.: "Fundamentals of Industrial Crystallization", HANDBOOK OF CRYSTAL GROWTH, 2015, pages 1317 - 1349
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Download PDF: