Title:
NEGATIVE-ION DETECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/233729
Kind Code:
A1
Abstract:
A negative-ion detecting device according to the present invention is provided with: supply piping (10) through which sample water containing a plurality of kinds of ions is circulated; a preheater (11); a heating bath (12) that further heats preheated sample water to isolate the preheated sample water into vapor and drainage water, the vapor containing a substance originating from ions to be isolated; discharge piping (13) for discharging the drainage water from the heating bath; an ion exchange part (14) that is provided on the discharge piping and that includes an ion exchange resin for removing remaining ions to be isolated; and a concentration detecting part (15) that detects the concentration of negative ions contained in the drainage water. The heating bath (12) includes: a bath body (21); a storage section (24) in which the preheated sample water is stored; a heater (25) that is provided in the storage section and that heats the sample water to generate vapor; and a discharge section for discharging the vapor to the outside of the bath body. The preheater (11) preheats the sample water while the sample water is in a liquid phase state and until the sample water reaches a state in which the vapor pressure thereof is equal to the atmospheric pressure.
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Inventors:
NAKATSUCHI YUTA (JP)
SAWATSUBASHI TETSUYA (JP)
HAMASAKI AKIHIRO (JP)
KIDO HARUKA (JP)
IWATO TAKAYOSHI (JP)
SAWATSUBASHI TETSUYA (JP)
HAMASAKI AKIHIRO (JP)
KIDO HARUKA (JP)
IWATO TAKAYOSHI (JP)
Application Number:
PCT/JP2023/005835
Publication Date:
December 07, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
G01N27/10; G01N1/10; G01N33/18
Domestic Patent References:
| WO2020031667A1 | 2020-02-13 |
Foreign References:
| JP2019219199A | 2019-12-26 | |||
| JP2018054359A | 2018-04-05 | |||
| US20120178175A1 | 2012-07-12 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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