SG11201909044UA - Electric anticorrosion system and seawater desalination plant provided with same - Google Patents

Electric anticorrosion system and seawater desalination plant provided with same

Info

Publication number
SG11201909044UA
SG11201909044UA SG11201909044UA SG11201909044UA SG 11201909044U A SG11201909044U A SG 11201909044UA SG 11201909044U A SG11201909044U A SG 11201909044UA SG 11201909044U A SG11201909044U A SG 11201909044UA
Authority
SG
Singapore
Prior art keywords
piping
electrolytic solution
flows
passes
hypochlorous acid
Prior art date
Application number
Inventor
Yuichi Nakano
Kotaro Kitamura
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of SG11201909044UA publication Critical patent/SG11201909044UA/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/06—Energy recovery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10—Accessories; Auxiliary operations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/144—Wave energy

Abstract

There are provided an electric anticorrosion system which is capable of preferably removing hypochlorous acid even in a case where an anticorrosion voltage which is at least a predetermined value is applied and a seawater 5 desalination plant which is provided therewith. The electric anticorrosion system 2 is provided with an electrode 21 disposed via insulating materials (35a, 35b) in a piping 32 in which an electrolytic solution passes and flows, an anticorrosion power supply 22 which applies 10 a voltage between the electrode 21 and the piping 32, and at least a flowmeter 23 which is installed in the piping 32 and measures a flow rate of the electrolytic solution which passes and flows in the piping 32 and a residual chlorine meter 24 which is installed in the piping 32 and 15 measures a concentration of the hypochlorous acid in the electrolytic solution which passes and flows in the piping 32, and has a control unit 20 which controls so as to add at least a hypochlorous acid removing agent to the electrolytic solution which passes and flows in the piping 20 32 on the basis of a measured value of the flow rate of the electrolytic solution by the flowmeter 23 and a measured value of the hypochlorous acid concentration in the electrolytic solution by the residual chlorine meter 24. 25 Fig. 2
SG11201909044U 2017-04-06 2018-03-15 Electric anticorrosion system and seawater desalination plant provided with same SG11201909044UA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017076060A JP6766004B2 (en) 2017-04-06 2017-04-06 Electrocorrosion protection system and seawater desalination plant equipped with it
PCT/JP2018/010312 WO2018186147A1 (en) 2017-04-06 2018-03-15 Electric anticorrosion system and seawater desalination plant provided with same

Publications (1)

Publication Number Publication Date
SG11201909044UA true SG11201909044UA (en) 2019-11-28

Family

ID=63713212

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201909044U SG11201909044UA (en) 2017-04-06 2018-03-15 Electric anticorrosion system and seawater desalination plant provided with same

Country Status (3)

Country Link
JP (1) JP6766004B2 (en)
SG (1) SG11201909044UA (en)
WO (1) WO2018186147A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10306390A (en) * 1997-05-02 1998-11-17 Nippon Boshoku Kogyo Kk Method for electrolytically preventing seawater contamination as well as electric corrosion and device therefor
WO2015083580A1 (en) * 2013-12-04 2015-06-11 株式会社日立製作所 Electric anticorrosion system
JP6250492B2 (en) * 2014-07-24 2017-12-20 株式会社日立製作所 Injection water production system
JP2019116650A (en) * 2017-12-26 2019-07-18 株式会社日立製作所 Electric corrosion prevention system and electrolyte desalination plant

Also Published As

Publication number Publication date
JP2018178167A (en) 2018-11-15
JP6766004B2 (en) 2020-10-07
WO2018186147A1 (en) 2018-10-11

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