Title:
晶析方法および晶析装置
Document Type and Number:
Japanese Patent JP5690484
Kind Code:
B2
Abstract:
A crystallization method includes: actually measuring a particle number of the crystals precipitated from the saturated solution and a concentration of the saturated solution, while cooling the solution according to a cooling temperature profile; calculating an absolute particle number of crystals precipitated from the saturated solution according to a mass balance, based on an actual measurement value of the particle number and an actual measurement value of the concentration; heating the saturated solution when the absolute particle number exceeds a threshold to perform heating control so that the absolute particle number becomes a set value; and cooling the saturated solution again according to a preset cooling temperature profile after controlling to dissolve excessive crystals in the solution so that the absolute particle number returns to the set value.
More Like This:
| WO/2004/071970 | METHOD FOR REMOVING PHOSPHORUS IN WASTEWATER |
| WO/2022/255369 | HEAT EXCHANGER |
| JP2004002072 | MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF FERTILIZER RAW MATERIAL |
Inventors:
小針 昌則
Application Number:
JP2009281654A
Publication Date:
March 25, 2015
Filing Date:
December 11, 2009
Export Citation:
Assignee:
日揮株式会社
International Classes:
B01D9/02
Attorney, Agent or Firm:
Masatake Shiga
Norio Takahashi
Takashi Watanabe
Mitsuyoshi Suzuki
West Kazuya
Yasuhiko Murayama
Norio Takahashi
Takashi Watanabe
Mitsuyoshi Suzuki
West Kazuya
Yasuhiko Murayama