Title:
DEVICE FOR PRODUCING ACIDIC HYPOCHLOROUS ACID WATER AND METHOD FOR PRODUCING ACIDIC HYPOCHLOROUS ACID WATER
Document Type and Number:
WIPO Patent Application WO/2024/034208
Kind Code:
A1
Abstract:
With respect to a device that is provided with a plurality of ion-exchange columns and produces a weakly acidic hypochlorous acid water from an aqueous sodium hypochlorite solution by an ion-exchange method, an embodiment of the present invention controls the cost of the device by reducing the component members, while also reducing the risk of the production of chlorine gas due to the accidental mixing of the aqueous sodium hypochlorite solution with the aqueous strong acid solution used for column regeneration. According to an embodiment of the present invention, a device for producing acidic hypochlorous acid water is characterized in that a chemical solution supply pipe (EA-1 to EA-n) that supplies an aqueous sodium hypochlorite solution starting material, an acid supply pipe (EB-1 to EB-n) that supplies an aqueous strong acid solution for column regeneration, and a water supply pipe (EF-1 to EF-n) for internal washing are all merged to provide n-number of common pipes (E1 to En) followed by connection to a column (C1 to Cn), and in that this merging follows the sequence of merging between the water supply pipe and either the chemical solution supply pipe or acid supply pipe and, downstream from this merge, merging with the other of the acid supply pipe and chemical solution supply pipe. In addition, a discharge-side pipe (G/H1 to G/Hn) preferably branches off an acid waste solution pipe (HB-1 to HB-n) and, downstream from this, branches off a hypo waste solution pipe (HA-1 to HA-n) and a processed chemical solution transfer pipe (G1 to Gn).
Inventors:
MOCHIZUKI NAOTO (JP)
TANAKA RYUMA (JP)
SAITO AKIHIRO (JP)
TANAKA RYUMA (JP)
SAITO AKIHIRO (JP)
Application Number:
PCT/JP2023/017740
Publication Date:
February 15, 2024
Filing Date:
May 11, 2023
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C01B11/04; B01J39/07; B01J47/15; B01J49/06; B01J49/53; C02F1/42
Domestic Patent References:
| WO2021090916A1 | 2021-05-14 |
Foreign References:
| JP2020117422A | 2020-08-06 | |||
| KR20160150223A | 2016-12-29 | |||
| CN111020621A | 2020-04-17 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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