US20170327958A1 - Method of obtaining hydrogen concentration in hydrogen-containing liquid and generator for hydrogen-containing liquid - Google Patents

Method of obtaining hydrogen concentration in hydrogen-containing liquid and generator for hydrogen-containing liquid Download PDF

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US20170327958A1
US20170327958A1 US15/591,602 US201715591602A US2017327958A1 US 20170327958 A1 US20170327958 A1 US 20170327958A1 US 201715591602 A US201715591602 A US 201715591602A US 2017327958 A1 US2017327958 A1 US 2017327958A1
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hydrogen
liquid
flow rate
containing liquid
water pressure
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Ryousuke Kurokawa
Fumitake Satoh
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Miz Co Ltd
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Miz Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/416—Systems
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/27—Association of two or more measuring systems or cells, each measuring a different parameter, where the measurement results may be either used independently, the systems or cells being physically associated, or combined to produce a value for a further parameter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/005—H2
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0067—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display by measuring the rate of variation of the concentration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46145—Fluid flow
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the present invention relates to a method of obtaining a hydrogen concentration in a hydrogen-containing liquid and relates also to a generator for a hydrogen-containing liquid.
  • Patent Document 1 JP2015-087221A
  • This method includes a measurement step and a calculation step.
  • the measurement step is designed to measure current flowing between a cathode plate disposed in a cathode chamber and an anode plate disposed in an anode chamber and to measure a discharge flow rate of the hydrogen water generated in the cathode chamber.
  • the calculation step is designed to calculate a dissolved hydrogen concentration in the hydrogen water generated in the cathode chamber in accordance with the current and discharge flow rate measured in the measurement step, on the basis of data that represents a correlation between the preliminarily measured current and discharge flow rate and the dissolved hydrogen concentration in the hydrogen water.
  • the dissolved hydrogen concentration in the above prior art electrolyzed water is less than 1 ppm (see FIGS. 1, 2, 6, and 7 of the document), which may be insufficient to exhibit antioxidative properties.
  • Problems to be solved by the present invention include providing a method of obtaining a hydrogen concentration even in a high-concentration hydrogen-containing liquid and providing a generator for a hydrogen-containing liquid.
  • the present invention solves the above problems through preliminarily obtaining a relationship among a flow rate, water pressure, and hydrogen concentration of a hydrogen-containing liquid, detecting the flow rate and water pressure of the hydrogen-containing liquid, and obtaining the hydrogen concentration on the basis of the detected flow rate and water pressure and the preliminarily-obtained relationship.
  • the present invention solves the above problems through preliminarily obtaining a relationship among an electric quantity during electrolysis, a water pressure of a hydrogen-containing liquid, and a hydrogen concentration, detecting the electric quantity during the electrolysis and the water pressure of the hydrogen-containing liquid, and obtaining the hydrogen concentration on the basis of the detected electric quantity and water pressure and the preliminarily-obtained relationship.
  • the hydrogen concentration can be obtained even in a high-concentration hydrogen-containing liquid.
  • FIG. 1 is a block diagram illustrating an embodiment of the generator for a hydrogen-containing liquid according to the present invention.
  • FIG. 2 is a block diagram illustrating another embodiment of the generator for a hydrogen-containing liquid according to the present invention.
  • FIG. 3 is a block diagram illustrating still another embodiment of the generator for a hydrogen-containing liquid according to the present invention.
  • FIG. 4 is a block diagram illustrating yet another embodiment of the generator for a hydrogen-containing liquid according to the present invention.
  • FIG. 1 is a block diagram illustrating an embodiment of a generator 1 for generating a hydrogen-containing liquid according to the present invention.
  • the generator 1 of the present embodiment comprises a hydrogen supply source 2 configured to supply a hydrogen-containing gas, a liquid supply source 3 configured to supply a liquid, and a dissolving unit 4 configured to dissolve the hydrogen-containing gas in the liquid.
  • the hydrogen supply source 2 is to supply a gas that contains a hydrogen component as the primary component (referred also to as a “hydrogen-containing gas,” hereinafter).
  • the hydrogen supply source 2 include a hydrogen gas cylinder, hydrogen storing alloy, fuel reformer, and electrolyzed water generator.
  • the hydrogen-containing gas supplied from the hydrogen supply source 2 is sent to a junction part 41 via a hydrogen supply tube 21 .
  • the hydrogen supply tube 21 is provided with a check valve 22 , and the hydrogen-containing gas having passed through the check valve 22 does not return to the hydrogen supply source 2 .
  • the hydrogen supply tube 21 may be provided with a fluid pressurization pump to regulate the supply pressure of the hydrogen-containing gas from the hydrogen supply source 2 to the junction part 41 .
  • the liquid supply source 3 is to supply a liquid of the intended hydrogen-containing liquid, that is, a liquid to which hydrogen gas is to be dissolved.
  • the liquid include water such as tap water, beverage, and medicinal liquid.
  • the liquid supplied from the liquid supply source 3 is sent to the junction part 41 via a liquid supply tube 31 .
  • the liquid supply tube 31 may be provided with a fluid pressurization pump to regulate the supply pressure of the liquid from the liquid supply source 3 to the junction part 41 .
  • the liquid supply tube 31 may also be provided with a check valve so that the liquid from the liquid supply source 3 does not return thereto.
  • the junction part 41 is composed of a piping joint that connects between the hydrogen supply tube 21 and the liquid supply tube 31 .
  • the hydrogen-containing gas and liquid reaching the junction part 41 flow into a gas/liquid mixing pipe 42 and are sent under pressure to the downstream side by a fluid pressurization pump 43 provided at the gas/liquid mixing pipe 42 .
  • the gas/liquid mixing pipe 42 is provided with a dissolving unit 4 at the downstream side from the fluid pressurization pump 43 .
  • the gas/liquid mixing pipe 42 is also provided with a flow rate regulating valve 44 at the downstream side from the dissolving unit 4 .
  • the dissolving unit 4 is a cylindrical body having a larger inner diameter than that of the gas/liquid mixing pipe 42 and comprises a mixing body having fine pores, such as a membrane filter, which is provided inside the cylindrical body.
  • a mixing body having fine pores such as a membrane filter
  • the hydrogen-containing gas becomes fine bubbles thereby to increase their surface area in contact with the liquid.
  • the hydrogen concentration increases because the hydrogen-containing gas in a form of fine bubbles and the liquid are pressurized in accordance with the pressurizing force by the fluid pressurization pump 43 and the opening degree of the flow rate regulating valve 44 .
  • the hydrogen-containing liquid which thus has a high concentration, is supplied from a supply port 45 to an intended site.
  • the generator 1 for generating a hydrogen-containing liquid comprises, in addition to the above-described configuration, a water pressure detector 51 configured to detect the water pressure of the hydrogen-containing liquid, a flow rate detector 52 configured to detect the flow rate of the hydrogen-containing liquid, a calculator 5 , and a display 6 .
  • the water pressure detector 51 is provided on the gas/liquid mixing pipe 42 between the fluid pressurization pump 43 and the dissolving unit 4 and detects the water pressure of the hydrogen-containing liquid (gas/liquid mixture of the hydrogen-containing gas and the liquid) which is pressurized by the fluid pressurization pump 43 .
  • the detection signal from the water pressure detector 51 is read out by the calculator 5 at a predetermined time interval.
  • the water pressure detector 51 may be provided on the gas/liquid mixing pipe 42 between the dissolving unit 4 and the flow rate regulating valve 44 .
  • the flow rate detector 52 detects the opening degree of the flow rate regulating valve 44 to detect the flow rate of the hydrogen-containing liquid.
  • the detection signal from the flow rate detector 52 is read out by the calculator 5 at a predetermined time interval.
  • the flow rate detector 52 may be provided on the gas/liquid mixing pipe 42 between the flow rate regulating valve 44 and the supply port 45 .
  • the calculator 5 is composed of a microcomputer that includes a CPU, ROM, and RAM.
  • the ROM also functions as a storage that stores preliminarily-obtained relational information among the flow rate, water pressure, and hydrogen concentration of the hydrogen-containing liquid passing through the dissolving unit 4 .
  • a calculation program is established to obtain the hydrogen concentration in actual use on the basis of the detected flow rate and water pressure and the relational information.
  • the display 6 is to present the hydrogen concentration obtained by the calculator 5 .
  • Examples of the display 6 include indicators, such as a seven-segment digital indicator, with which the concentration can be visually recognized and those, such as a speaker, with which the concentration can be audibly perceived.
  • the generator 1 for generating a hydrogen-containing liquid as illustrated in FIG. 1 was made using a three-layer electrolytic cell available from MiZ Company Limited as the hydrogen supply source 2 , tap water as the liquid supply source 3 , CDP8800 available from Aquatec as the fluid pressurization pump 43 , and MOM-PF5 (membrane filter) available from MonotaRO Co., Ltd. as the dissolving unit 4 .
  • the flow rate of the hydrogen-containing gas supplied from the hydrogen supply source 2 to the junction part 41 was controlled by a value of current flowing through electrodes of the MiZ three-layer electrolytic cell.
  • the flow rate of the tap water supplied from the liquid supply source 3 to the junction part 41 was controlled by the opening degree of the water outlet.
  • the pressure of the gas/liquid mixture between the fluid pressurization pump 43 and the dissolving unit 4 was controlled by the fluid pressurization pump 43 and the flow rate regulating valve 44 .
  • the dissolved hydrogen concentration was measured (titrated) with a dissolved hydrogen concentration measuring reagent (9.88 ml of alcohols containing ethanol, methylene blue, and colloidal platinum) available from MiZ Company Limited using a dropper for dropping the reagent drop by drop, one drop capable of reacting with 0.1 ppm of hydrogen. This titration was performed by counting the number of drops when the blue reagent turned to transparent. Results are listed in Table 1.
  • Example 1 None 18.0 3.0 0.4 2.2 0.983
  • Example 2 18.0 3.0 0.3 2.0
  • Example 3 18.0 3.0 0.2 1.8
  • Example 4 18.0 3.0 0.1 1.4
  • Example 5 None 18.0 1.5 0.4 2.5 0.988
  • Example 6 18.0 1.5 0.3 1.9
  • Example 7 18.0 1.5 0.2 1.5
  • Example 8 18.0 1.5 0.1 1.2
  • Example 9 None 6.0 1.5 0.4 1.3 0.976
  • Example 10 6.0 1.5 0.3 1.0
  • Example 11 6.0 1.5 0.2 0.8
  • Example 12 6.0 1.5 0.1 0.7
  • Examples 1 to 4 are those in which the hydrogen concentration was measured when the flow rate of the hydrogen-containing gas from the hydrogen supply source 2 was constant (18.0 A), the flow rate of the tap water from the liquid supply source 3 was constant (3.0 L/min), and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 0.983, which is very close to 1.
  • Examples 5 to 8 are those in which the hydrogen concentration was measured when the flow rate of the tap water was 1.5 L/min as substitute for 3.0 L/min in Examples 1 to 4 and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 0.988, which is very close to 1.
  • Examples 9 to 12 are those in which the hydrogen concentration was measured when the flow rate of the hydrogen-containing gas was 6.0 A as substitute for 18.0 A in Examples 5 to 8 and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 0.976, which is very close to 1.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is very close to 1 at a given flow rate of the hydrogen-containing gas from the hydrogen supply source 2 and a given flow rate of the tap water from the liquid supply source 3 . Accordingly, a relational expression thereamong is preliminarily obtained and stored in the ROM of the calculator 5 .
  • the generator 1 for generating a hydrogen-containing liquid is actually used with a fixed value of the flow rate of the hydrogen-containing gas from the hydrogen supply source 2 , that is, a fixed value of the current
  • the flow rate detected by the flow rate detector 52 and the water pressure detected by the water pressure detector 51 are read into the calculator 5 , and the detected flow rate and the detected pressure are substituted into the relational expression to obtain the hydrogen concentration using the calculation program established in the ROM for obtaining the hydrogen concentration.
  • This obtained hydrogen concentration is presented by the display 6 and the user can thus perceive the hydrogen concentration in the hydrogen-containing liquid from the supply port 45 .
  • FIG. 2 is a block diagram illustrating another embodiment of a generator 1 for generating a hydrogen-containing liquid according to the present invention.
  • the generator 1 of the present embodiment is different from the generator 1 illustrated in FIG. 1 in that the liquid supply tube 31 is provided with a deaeration module 32 and a vacuum pump 33 , and other features are the same as those illustrated in FIG. 1 .
  • the vacuum pump 33 to operate the deaeration module 32 allows gases (mainly oxygen and other gases) to be removed (namely, to be deaired) from the liquid supplied from the liquid supply source 3 . This operation can enhance the hydrogen concentration because the amount of contact between the liquid and the hydrogen gas increases in the pass from the junction part 41 to the dissolving unit 4 .
  • the generator 1 for generating a hydrogen-containing liquid as illustrated in FIG. 2 was made using a three-layer electrolytic cell available from MiZ Company Limited as the hydrogen supply source 2 , tap water as the liquid supply source 3 , SEPAREL EF-002A-P available from DIC Corporation as the deaeration module 32 , DAP-6D available from ULVAC, Inc. as the vacuum pump 33 for the deaeration module 32 , CDP8800 available from Aquatec as the fluid pressurization pump 43 , and MOM-PF5 (membrane filter) available from MonotaRO Co., Ltd. as the dissolving unit 4 .
  • the flow rate of the hydrogen-containing gas supplied from the hydrogen supply source 2 to the junction part 41 was controlled by a value of current flowing through electrodes of the MiZ three-layer electrolytic cell.
  • the flow rate of the tap water supplied from the liquid supply source 3 to the junction part 41 was controlled by the opening degree of the water outlet.
  • the pressure of the gas/liquid mixture between the fluid pressurization pump 43 and the dissolving unit 4 was controlled by the fluid pressurization pump 43 and the flow rate regulating valve 44 .
  • the dissolved hydrogen concentration was measured (titrated) with a dissolved hydrogen concentration measuring reagent (9.88 ml of alcohols containing ethanol, methylene blue, and colloidal platinum) available from MiZ Company Limited using a dropper for dropping the reagent drop by drop, one drop capable of reacting with 0.1 ppm of hydrogen. This titration was performed by counting the number of drops when the blue reagent turned to transparent. Results are listed in Table 2.
  • Example 13 Done 18.0 3.0 0.4 3.3 0.976
  • Example 14 18.0 3.0 0.3 2.7
  • Example 15 18.0 3.0 0.2 2.3
  • Example 16 18.0 3.0 0.1 2.1
  • Example 17 Done 18.0 1.5 0.4 3.2 0.984
  • Example 18 18.0 1.5 0.3 2.9
  • Example 19 18.0 1.5 0.2 2.0
  • Example 20 18.0 1.5 0.1 1.5
  • Example 21 Done 6.0 1.5 0.4 1.7 1.000
  • Example 22 6.0 1.5 0.3 1.5
  • Example 23 6.0 1.5 0.2 1.3
  • Example 24 6.0 1.5 0.1 1.1
  • Examples 13 to 16 are those in which the hydrogen concentration was measured when the flow rate of the hydrogen-containing gas from the hydrogen supply source 2 was constant (18.0 A), the flow rate of the tap water from the liquid supply source 3 was constant (3.0 L/min), and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 0.976, which is very close to 1.
  • Examples 17 to 20 are those in which the hydrogen concentration was measured when the flow rate of the tap water was 1.5 L/min as substitute for 3.0 L/min in Examples 13 to 16 and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 0.984, which is very close to 1.
  • Examples 21 to 24 are those in which the hydrogen concentration was measured when the flow rate of the hydrogen-containing gas was 6.0 A as substitute for 18.0 A in Examples 17 to 20 and the pressure of the gas/liquid mixture was varied from 0.1 to 0.4 MPa.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 1.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 1 or very close to 1 at a given flow rate of the hydrogen-containing gas from the hydrogen supply source 2 and a given flow rate of the tap water from the liquid supply source 3 . Accordingly, a relational expression thereamong is preliminarily obtained and stored in the ROM of the calculator 5 .
  • the generator 1 for generating a hydrogen-containing liquid is actually used with a fixed value of the flow rate of the hydrogen-containing gas from the hydrogen supply source 2 , that is, a fixed value of the current
  • the flow rate detected by the flow rate detector 52 and the water pressure detected by the water pressure detector 51 are read into the calculator 5 , and the detected flow rate and the detected pressure are substituted into the relational expression to obtain the hydrogen concentration using the calculation program established in the ROM for obtaining the hydrogen concentration.
  • This obtained hydrogen concentration is presented by the display 6 and the user can thus perceive the hydrogen concentration in the hydrogen-containing liquid from the supply port 45 .
  • FIG. 3 is a block diagram illustrating still another embodiment of a generator 1 for generating a hydrogen-containing liquid according to the present invention.
  • the generator 1 of the present embodiment uses an electrolyzed water generator as the hydrogen supply source 2 .
  • the electrolyzed water generator comprises an electrolyzer 23 , a separating membrane 24 , a pair of anode plate 25 and cathode plate 26 arranged to sandwich the separating membrane 24 , a DC power source 27 configured to supply DC power to the anode plate 25 and the cathode plate 26 , and a liquid 28 to be electrolyzed which is stored in the electrolyzer 23 .
  • the generator 1 is provided with a current detector 53 configured to detect a value of current flowing through the cathode plate 26 and its detection signal is read out by the calculator 5 at a predetermined time interval. Instead, the flow rate detector 52 provided at the flow rate regulating valve 44 is omitted. As compared with the generator 1 illustrated in FIG. 2 , the generator 1 of the present embodiment is different in that the hydrogen supply tube 21 is provided with a fluid pressurization pump 29 , but the fluid pressurization pump 29 may be omitted as necessary. Other features are the same as those illustrated in FIG. 1 .
  • the value of current flowing through the cathode plate 26 is variable while the opening degree of the flow rate regulating valve 44 is fixed.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is 1 or very close to 1 at a given flow rate of the hydrogen-containing gas from the hydrogen supply source 2 (a given value of current flowing through the cathode plate 26 ) and a given flow rate of the tap water from the liquid supply source 3 . Accordingly, a relational expression thereamong is preliminarily obtained and stored in the ROM of the calculator 5 .
  • the generator 1 for generating a hydrogen-containing liquid When the generator 1 for generating a hydrogen-containing liquid is actually used with a fixed value of the opening degree of the flow rate regulating valve 44 , the current value detected by the current detector 53 and the water pressure detected by the water pressure detector 51 are read into the calculator 5 , and the detected current value and the detected pressure are substituted into the relational expression to obtain the hydrogen concentration using the calculation program established in the ROM for obtaining the hydrogen concentration. This obtained hydrogen concentration is presented by the display 6 and the user can thus perceive the hydrogen concentration in the hydrogen-containing liquid from the supply port 45 .
  • FIG. 4 is a block diagram illustrating yet another embodiment of a generator 1 for generating a hydrogen-containing liquid according to the present invention.
  • the generator 1 of the present embodiment is different in that it has a plurality of (two in this example) hydrogen supply sources 2 A and 2 B for one liquid supply source 3 .
  • the hydrogen supply source 2 A is to supply a hydrogen-containing gas and examples thereof include a hydrogen gas cylinder, hydrogen storing alloy, fuel reformer, and electrolyzed water generator.
  • the hydrogen-containing gas supplied from the hydrogen supply source 2 A is sent to a junction part 41 A via a hydrogen supply tube 21 A.
  • the hydrogen supply tube 21 A is provided with a check valve 22 A, and the hydrogen-containing gas having passed through the check valve 22 A does not return to the hydrogen supply source 2 A.
  • the hydrogen supply tube 21 A may be provided with a fluid pressurization pump to regulate the supply pressure of the hydrogen-containing gas from the hydrogen supply source 2 A to the junction part 41 A.
  • the hydrogen supply source 2 B is also to supply a hydrogen-containing gas and examples thereof include a hydrogen gas cylinder, hydrogen storing alloy, fuel reformer, and electrolyzed water generator.
  • the hydrogen-containing gas supplied from the hydrogen supply source 2 B is sent to a junction part 41 B via a hydrogen supply tube 21 B.
  • the hydrogen supply tube 21 B is provided with a check valve 22 B, and the hydrogen-containing gas having passed through the check valve 22 B does not return to the hydrogen supply source 2 B.
  • the hydrogen supply tube 21 B may be provided with a fluid pressurization pump to regulate the supply pressure of the hydrogen-containing gas from the hydrogen supply source 2 B to the junction part 41 B.
  • the liquid supply source 3 is to supply a liquid of the intended hydrogen-containing liquid, that is, a liquid to which hydrogen gas is to be dissolved.
  • the liquid include water such as tap water, beverage, and medicinal liquid.
  • the liquid supplied from the liquid supply source 3 is distributed at midstream of the liquid supply tube 31 and sent to each of the two junction parts 41 A and 41 B.
  • the liquid supply tube 31 is provided with a deaeration module 32 and a vacuum pump 33 . Turning on the vacuum pump 33 to operate the deaeration module 32 allows gases (mainly oxygen and other gases) to be removed from the liquid supplied from the liquid supply source 3 .
  • the deaeration module 32 and the vacuum pump 33 may be omitted.
  • the liquid supply tube 31 may be provided with one or more fluid pressurization pumps to regulate the supply pressure of the liquid from the liquid supply source 3 to each of the junction parts 41 A and 41 B.
  • the liquid supply tube 31 may also be provided with a check valve so that the liquid from the liquid supply source 3 does not return thereto.
  • the junction part 41 A is composed of a piping joint that connects between the hydrogen supply tube 21 A and the liquid supply tube 31 .
  • the hydrogen-containing gas and liquid reaching the junction part 41 A flow into a gas/liquid mixing pipe 42 A and are sent under pressure to the downstream side by a fluid pressurization pump 43 A provided at the gas/liquid mixing pipe 42 A.
  • the gas/liquid mixing pipe 42 A is provided with a dissolving unit 4 A at the downstream side from the fluid pressurization pump 43 A.
  • the gas/liquid mixing pipe 42 A is also provided with a flow rate regulating valve 44 A at the downstream side from the dissolving unit 4 A.
  • the dissolving unit 4 A is a cylindrical body having a larger inner diameter than that of the gas/liquid mixing pipe 42 A and comprises a mixing body having fine pores, such as a membrane filter, which is provided inside the cylindrical body.
  • a mixing body having fine pores such as a membrane filter
  • the hydrogen-containing gas becomes fine bubbles thereby to increase their surface area in contact with the liquid.
  • the hydrogen concentration increases because the hydrogen-containing gas in a form of fine bubbles and the liquid are pressurized in accordance with the pressurizing force by the fluid pressurization pump 43 A and the opening degree of the flow rate regulating valve 44 A.
  • the hydrogen-containing liquid which thus has a high concentration, is supplied from a supply port 45 to an intended site.
  • the junction part 41 B is composed of a piping joint that connects between the hydrogen supply tube 21 B and the liquid supply tube 31 .
  • the hydrogen-containing gas and liquid reaching the junction part 41 B flow into a gas/liquid mixing pipe 42 B and are sent under pressure to the downstream side by a fluid pressurization pump 43 B provided at the gas/liquid mixing pipe 42 B.
  • the gas/liquid mixing pipe 42 B is provided with a dissolving unit 4 B at the downstream side from the fluid pressurization pump 43 B.
  • the gas/liquid mixing pipe 42 B is also provided with a flow rate regulating valve 44 B at the downstream side from the dissolving unit 4 B.
  • the dissolving unit 4 B is a cylindrical body having a larger inner diameter than that of the gas/liquid mixing pipe 42 B and comprises a mixing body having fine pores, such as a membrane filter, which is provided inside the cylindrical body.
  • a mixing body having fine pores such as a membrane filter
  • the hydrogen-containing gas becomes fine bubbles thereby to increase their surface area in contact with the liquid.
  • the hydrogen concentration increases because the hydrogen-containing gas in a form of fine bubbles and the liquid are pressurized in accordance with the pressurizing force by the fluid pressurization pump 43 B and the opening degree of the flow rate regulating valve 44 B.
  • the hydrogen-containing liquid which thus has a high concentration, is supplied from a supply port 45 to an intended site.
  • the generator 1 for generating a hydrogen-containing liquid comprises, in addition to the above-described configuration, water pressure detectors 51 A and 51 B each configured to detect the water pressure of the hydrogen-containing liquid, flow rate detectors 52 A and 52 B each configured to detect the flow rate of the hydrogen-containing liquid, a calculator 5 , and a display 6 .
  • the water pressure detector 51 A is provided on the gas/liquid mixing pipe 42 A between the fluid pressurization pump 43 A and the dissolving unit 4 A and detects the water pressure of the hydrogen-containing liquid (gas/liquid mixture of the hydrogen-containing gas and the liquid) which is pressurized by the fluid pressurization pump 43 A.
  • the detection signal from the water pressure detector 51 A is read out by the calculator 5 at a predetermined time interval.
  • the water pressure detector 51 A may be provided on the gas/liquid mixing pipe 42 A between the dissolving unit 4 A and the flow rate regulating valve 44 A.
  • the water pressure detector 51 B is provided on the gas/liquid mixing pipe 42 B between the fluid pressurization pump 43 B and the dissolving unit 4 B and detects the water pressure of the hydrogen-containing liquid (gas/liquid mixture of the hydrogen-containing gas and the liquid) which is pressurized by the fluid pressurization pump 43 B.
  • the detection signal from the water pressure detector 51 B is read out by the calculator 5 at a predetermined time interval.
  • the water pressure detector 51 B may be provided on the gas/liquid mixing pipe 42 B between the dissolving unit 4 B and the flow rate regulating valve 44 B.
  • the flow rate detector 52 A detects the opening degree of the flow rate regulating valve 44 A to detect the flow rate of the hydrogen-containing liquid. The detection signal from the flow rate detector 52 A is read out by the calculator 5 at a predetermined time interval. In an alternative embodiment, the flow rate detector 52 A may be provided on the gas/liquid mixing pipe 42 A between the flow rate regulating valve 44 A and the supply port 45 . The flow rate detector 52 B detects the opening degree of the flow rate regulating valve 44 B to detect the flow rate of the hydrogen-containing liquid. The detection signal from the flow rate detector 52 B is read out by the calculator 5 at a predetermined time interval. In an alternative embodiment, the flow rate detector 52 B may be provided on the gas/liquid mixing pipe 42 B between the flow rate regulating valve 44 B and the supply port 45 .
  • the calculator 5 is composed of a microcomputer that includes a CPU, ROM, and RAM.
  • the ROM also functions as a storage that stores preliminarily-obtained relational information among the flow rate, water pressure, and hydrogen concentration of the hydrogen-containing liquid passing through each of the dissolving units 4 A and 4 B.
  • a calculation program is established to obtain the hydrogen concentration in actual use on the basis of the detected flow rate and water pressure and the relational information.
  • the display 6 is to present the hydrogen concentration obtained by the calculator 5 .
  • Examples of the display 6 include indicators, such as a seven-segment digital indicator, with which the concentration can be visually recognized and those, such as a speaker, with which the concentration can be audibly perceived.
  • the correlation coefficient between the pressure of the gas/liquid mixture and the hydrogen concentration is very close to 1 at a given flow rate of the hydrogen-containing gas from each of the hydrogen supply sources 2 A and 2 B and a given flow rate of the tap water from the liquid supply source 3 . Accordingly, a relational expression thereamong is preliminarily obtained and stored in the ROM of the calculator 5 .
  • the generator 1 for generating a hydrogen-containing liquid is actually used with a fixed value of the flow rate of the hydrogen-containing gas from each of the hydrogen supply sources 2 A and 2 B, that is, a fixed value of each current flowing through the cathode plate
  • the flow rate detected by each of the flow rate detectors 52 A and 52 B and the water pressure detected by each of the water pressure detectors 51 A and 51 B are read into the calculator 5 , and the detected flow rate and the detected pressure are substituted into the relational expression to obtain the hydrogen concentration using the calculation program established in the ROM for obtaining the hydrogen concentration.
  • This obtained hydrogen concentration is presented by the display 6 and the user can thus perceive the hydrogen concentration in the hydrogen-containing liquid from the supply port 45 .

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US15/591,602 2016-05-11 2017-05-10 Method of obtaining hydrogen concentration in hydrogen-containing liquid and generator for hydrogen-containing liquid Abandoned US20170327958A1 (en)

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JP2016095443A JP6148759B1 (ja) 2016-05-11 2016-05-11 水素含有液体の水素濃度を求める方法及び水素含有液体の生成装置
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EP3839101A4 (en) * 2018-08-13 2021-10-20 Asahi Kasei Kabushiki Kaisha WATER ELECTROLYSIS APPARATUS

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JP6767431B2 (ja) * 2018-06-06 2020-10-14 株式会社日本トリム 水素ガス溶解装置

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GB2555502B (en) 2019-07-24
KR20170127372A (ko) 2017-11-21
DE102017110010A1 (de) 2017-11-16
GB2555502A (en) 2018-05-02
GB201707179D0 (en) 2017-06-21
CN107449817A (zh) 2017-12-08
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TWI629480B (zh) 2018-07-11
JP6148759B1 (ja) 2017-06-14

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