Title:
CONDUCTIVE AQUEOUS SOLUTION PRODUCTION DEVICE AND CONDUCTIVE AQUEOUS SOLUTION PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/146823
Kind Code:
A1
Abstract:
This conductive aqueous solution production device 1 has: an ion exchanger 2 provided partway along a main pipe 11 for supplying ultrapure water W as a starting liquid; a supply pipe 12 which converges with the main pipe 11 on the downstream side of the ion exchanger 2; and a conductivity-imparting substance supply device 3. When the conductivity-imparting substance is ammonia, for example, it is preferable for the ion exchange material which fills the ion exchanger 2 to be a cation exchange resin, because the ions are cations, or in other words, ammonium ions (NH4
+). In addition, when the conductivity-imparting substance is carbon dioxide, it is preferable to fill the ion exchanger 2 with an anion exchange resin, because the ions are anions, or in other words, bicarbonate ions (NCO3
-) or carbonate ions (CO3
2-). This conductive aqueous solution production device is capable of producing a conductive aqueous solution at a stable concentration, with excellent tracking of changes in concentration.
Inventors:
OGAWA YUUICHI (JP)
Application Number:
PCT/JP2017/009430
Publication Date:
August 16, 2018
Filing Date:
March 09, 2017
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/68; B08B3/08; C02F1/42
Domestic Patent References:
| WO2007105820A1 | 2007-09-20 |
Foreign References:
| JP2013255921A | 2013-12-26 | |||
| JP2011194402A | 2011-10-06 | |||
| JP2016076589A | 2016-05-12 | |||
| JP2016076590A | 2016-05-12 |
Attorney, Agent or Firm:
HAYAKAWA Yuzi et al. (JP)
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