JP2017008366A - Method of and device for producing alkaline water, and exhaust purification apparatus having device built therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alkaline water production method and device capable of efficiently producing an alkaline water and at the same time capable of supplying the current having a stable voltage against external load.SOLUTION: An alkaline water production device comprises: an electrochemical tank 10 having cathode and anode immersed in an electrolytic aqueous solution; one end charge/discharge capacities 23a, 23b, 23c; quadrupole switches 24a, 24b, 24c; charge/discharge parts 25a, 25b, 25c connected in parallel with each other; the external connection terminals 22a, 22b; and a discharging resistor 26. An alkaline water is produced while carrying out a load electrification by switching the quadrupole switches while displacing a phase using a set of the charge/discharge parts as a charging mode charging by an electric charge generated in an electrochemical tank, another set of the charge/discharge parts as a load energizing mode energizing to the external load via an external connection terminal, and other one set of the charge/discharge parts as a discharge mode discharging via the discharging resistor.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an alkaline water generation method, an alkaline water generation device, and an exhaust gas purification apparatus in which the alkaline water generation device is incorporated, capable of applying load current to an external load while generating alkaline water.

  Conventionally, as an electrochemical device using alkaline water generated by an electrochemical reaction, for example, the following references 1 and 2 are known.

In Cited Document 1, a positive voltage is applied to the first electrode formed of magnesium, a negative voltage is applied to the second electrode formed of magnesium or another conductive metal, and the bath water is supplied from the first electrode. A bath water reforming apparatus that dissolves Mg ²⁺ ions to modify the bath water to be alkaline is disclosed.

  Reference 2 discloses a bubbling tank that discharges exhaust gas generated by an engine in water and discharges the exhaust gas through the water to the outside, and particulate matter collected in the water through the water in the bubbling tank. A filter for filtering water, a neutralization tank for storing water that has passed through the filter, and an electrode array that is provided in the neutralization tank and includes a plurality of electrode plates including at least a magnesium material electrode, Exhaust gas that is converted to neutral or alkaline by electrolytic reaction with magnesium by applying a voltage between the electrodes at both ends of the electrode array, so that nitrogen oxide or sulfur oxide in the exhaust gas dissolves and becomes acidic A gas purification device is disclosed.

  On the other hand, magnesium electrodes have an industrial application field called magnesium fuel cells. For example, in the following cited document 3, a negative electrode material made of a magnesium alloy, a positive electrode current collector that supplies electrons to air (oxygen) as a positive electrode material, and a negative electrode material and a positive electrode current collector are disposed. There is disclosed a magnesium fuel cell including a separator, an electrolytic solution for eluting magnesium ions generated in a negative electrode, and an electrolytic solution tank for storing the electrolytic solution.

JP 2001-149940 A JP 2003-301714 A JP 2012-234799 A

  However, in the electrochemical devices described in Patent Literatures 1 and 2, it is necessary to supply electric power from the outside in order to obtain alkaline water by eluting magnesium ions from the magnesium electrode.

  On the other hand, the magnesium fuel cell described in Patent Document 3 can be used as a DC power source by connecting a load between the electrodes. However, when a high-resistance load is connected, only a little load current flows, and the elution rate of magnesium also increases. Accordingly, the apparatus is not suitable as an apparatus for generating alkaline water.

  Therefore, an object of the present invention is to provide an alkaline water generating method and an alkaline water generating device capable of efficiently generating alkaline water and simultaneously supplying a stable current to an external load. It is in.

  In order to achieve the above object, the alkaline water generating method of the present invention comprises an electrochemical tank having a positive electrode and a negative electrode immersed in an aqueous electrolyte solution, and a charge connected at one end to either the positive electrode or the negative electrode. There is a four-pole switch that is connected to the other end of the discharge capacity and the charge / discharge capacity and can switch the connection destination of the charge / discharge capacity, and one end of the charge / discharge capacity is wired to the negative electrode Then, one of the connection destinations of the four-pole switch is the positive electrode, and if one end of the charge / discharge capacitor is connected to the positive electrode, one of the connection destinations of the four-pole switch is the negative electrode. The charging capacitor and the four-pole switch configured as described above, a plurality of charging / discharging units connected in parallel to each other, a pair of external connection terminals connectable to an external load, and the charging / discharging unit Discharge of discharge part A phase difference of the four-pole switch provided in each of the plurality of sets of charging / discharging units using an alkaline water generator having a discharge resistor for limiting flow and a control unit for controlling switching of the four-pole switch. While switching, at least one set of the charging / discharging unit is set to a charging mode in which the electric charge generated in the electrochemical tank is charged, and at least another set of the charging / discharging unit is energized to the external load via the external connection terminal The load energization mode is used, and at least another set of the charge / discharge unit is discharged as the discharge mode via the discharge resistor, and alkaline water is generated while the load is energized.

  According to the present invention, the charging / discharging capacity is connected to the electrochemical tank and charged, and then the four-pole switch is switched by the control signal sent from the control unit, and the charging / discharging capacity is connected to the external load so that the load is energized. As a result, even when an external load with a high load resistance is connected, it is possible to flow a large current through the electrochemical tank, generating alkaline water efficiently, and at the same time the voltage is stabilized at the external load. Current supply can be performed.

  In the alkaline water generating method of the present invention, it is preferable that the control unit switches the four-pole switch when a charging current for charging the charging / discharging unit becomes equal to or less than a preset current value.

  According to the above aspect, the charge current is directly measured and the four-pole switch is switched before the charge / discharge capacity is charged and it becomes difficult for the current to flow into the electrochemical tank, so that alkaline water can be efficiently generated. At the same time, it is possible to supply a current with a stable voltage to an external load.

  In the alkaline water generating method of the present invention, it is preferable that the control unit switches the four-pole switch at a preset time interval.

  According to the above aspect, since the charge / discharge capacity is charged and it becomes difficult for the current to flow into the electrochemical tank, the four-pole switch is switched at a predetermined time interval based on the prediction of the decrease in the charging current, so that alkaline water is efficiently used. It can be generated well, and at the same time, the current can be supplied to the external load with a stable voltage.

  The alkaline water generator of the present invention comprises an electrochemical tank having a positive electrode and a negative electrode immersed in an aqueous electrolyte solution, a charge / discharge capacity having one end connected to either the positive electrode or the negative electrode, and the charge / discharge capacity. A four-pole switch connected to the other end of the discharge capacity and capable of switching the connection destination of the charge / discharge capacity, comprising a set of the charge capacity and the four-pole switch, and a plurality of sets connected in parallel to each other; Alkaline water comprising: a charge / discharge unit; a pair of external connection terminals connectable to an external load; a discharge resistor that limits a discharge current of the charge / discharge unit; and a control unit that controls switching of the four-pole switch In the generator, the first terminal of the four-pole switch is an open terminal, and the second terminal of the four-pole switch is connected to the negative electrode at one end of the charge / discharge capacitor. If the one end of the charge / discharge capacitor is connected to the positive electrode, the third terminal of the four-pole switch is connected to the charge / discharge. Wired to the other external connection terminal that is paired with the external connection terminal wired to the capacitor, the fourth terminal of the four-pole switch is connected to one end of the charge / discharge capacitor to the negative electrode If connected to the negative electrode through a discharging resistor, and one end of the charge / discharge capacitor is connected to the positive electrode through a discharging resistor if connected to the positive electrode. And

  According to the present invention, the control signal sent from the control unit connects to the first terminal of the four-pole switch to hold the charge of the charge / discharge capacitor, and the second terminal of the four-pole switch A charge mode for connecting and charging the charge / discharge capacity; a load energization mode for connecting to a third terminal of the four-pole switch to energize an external load; and a charge / discharge for connecting to the fourth terminal of the four-pole switch It is possible to switch to a discharge mode for discharging the capacity for use.

  In the alkaline water generator of the present invention, an ammeter is preferably disposed in the middle of the wiring connecting the electrochemical tank and the second terminal of the four-pole switch.

  According to the above aspect, the charging current from the electrochemical tank to the charge / discharge capacity, in other words, the amount of charge generated in the unit time in the electrochemical tank can be measured.

  In the alkaline water generating apparatus of the present invention, it is preferable that the control unit is configured to switch the four-pole switch when a current measured by the ammeter is equal to or less than a preset current value.

  According to the above aspect, the charge current can be directly measured and the four-pole switch can be switched before the charge / discharge capacity is charged and it becomes difficult for the current to flow into the electrochemical tank. At the same time, the current can be supplied to the external load with a stable voltage.

  In the alkaline water generating apparatus of the present invention, it is preferable that the control unit includes a timer and is configured to switch the four-pole switch at a preset time interval.

  According to the above aspect, since the charge / discharge capacity is charged and it becomes difficult for the current to flow into the electrochemical tank, the four-pole switch can be switched at a predetermined time interval based on the predicted decrease in the charging current. Water can be generated efficiently, and a current with a stable voltage can be supplied to an external load.

  In the alkaline water generator of the present invention, it is preferable that a smoothing capacitor is connected between the pair of external connection terminals.

  According to the said aspect, electric power with a small voltage fluctuation | variation can be supplied to an external load.

  In the alkaline water generator of the present invention, it is preferable that the charge / discharge capacity and the smoothing capacity are electric double layer capacitors.

  According to the said aspect, the capacitor used for the capacity | capacitance for charging / discharging and a smoothing capacity | capacitance can be reduced in size.

  In the alkaline water generator of the present invention, it is preferable that a single electrode switch is connected by wiring between the positive electrode and the negative electrode of the electrochemical tank.

  According to the said aspect, even if it does not carry out load electricity supply, an electric current can be sent between the positive electrode and negative electrode of an electrochemical tank, and alkaline water can be manufactured.

  An exhaust gas treatment apparatus of the present invention includes the above alkaline water generation apparatus, and circulates the alkaline water through a scrubber to neutralize an acid contained in the exhaust gas.

  According to the present invention, the charging / discharging capacity is connected to the electrochemical tank and charged, and then the four-pole switch is switched by the control signal sent from the control unit, and the charging / discharging capacity is connected to the external load so that the load is energized. As a result, even when an external load with a high load resistance is connected, it is possible to flow a large current through the electrochemical tank, generating alkaline water efficiently, and at the same time the voltage is stabilized at the external load. Current supply can be performed.

1 is a schematic view showing an embodiment of an alkaline water generator according to the present invention. It is drawing which shows the circuit part of the apparatus. It is drawing which shows the circuit part showing other embodiment of the alkaline-water generator based on this invention. It is a time chart showing circuit operation at the time of load energization by the device. 1 is a schematic view showing an embodiment of an exhaust gas purifying apparatus according to the present invention.

  Hereinafter, the alkaline water generation method and the alkaline water generation apparatus will be described in detail with reference to the drawings.

  FIG. 1 shows an embodiment of an alkaline water generator according to the present invention. The alkaline water generating apparatus 100 includes an electrochemical tank 10 and a circuit unit 20, and the electrochemical tank 10 includes an electrochemical tank body 12 that stores an electrolytic aqueous solution 11, and a positive electrode 13 that is immersed in the electrolytic aqueous solution 11 and constitutes a battery. And the negative electrode 14, the circuit unit 20 includes electrode connection terminals 21 a and 21 b and external connection terminals 22 a and 22 b, and the positive electrode 13 and the negative electrode 14 are connected to the electrode connection terminals 21 a and 21 b of the circuit unit 20, respectively. The circuit unit 20 supplies a direct current to the circuit unit 20, the circuit unit 20 conducts a load to the external load R via the external connection terminals 22 a and 22 b, and the aqueous electrolyte solution 11 generates hydroxide ions generated at the positive electrode 13. Thus, it is configured to be highly alkaline alkaline water.

  First, the electrolyte aqueous solution 11, the positive electrode 13, and the negative electrode 14 which comprise a battery are demonstrated.

  The aqueous electrolyte solution 11 used in the present invention is not particularly limited, and an aqueous solution having electrical conductivity, for example, an aqueous solution containing a cation such as sodium or potassium, or seawater can be used as a raw material. When the alkaline water generator 100 is installed in a coastal factory or ship, operating costs can be saved by using seawater.

  The electrode active materials for the positive electrode 13 and the negative electrode 14 used in the present invention are not particularly limited. For example, air (oxygen) can be used as the electrode active material for the positive electrode 13, and magnesium can be used as the electrode active material for the negative electrode 14. In this case, an electromotive force is generated between the positive electrode 13 and the negative electrode 14 by an electrode reaction represented by the following formula, and thus the electrochemical tank 10 can be used as a battery. Further, hydroxide ions are generated at the positive electrode 13, and the aqueous electrolyte solution 11 becomes highly alkaline alkaline water containing hydroxide ions, and can be used as treated water for, for example, an exhaust gas purification device.

Positive electrode: (1/2) O ₂ + H ₂ O + 2e ⁻ → 2OH ⁻ (1)
Negative electrode: Mg → Mg ²⁺ + 2e ⁻ (2)

Mg ²⁺ eluted from the negative electrode 14 is dissolved in the electrolyte aqueous solution 11 as a cation. However, when the concentration of Mg ²⁺ increases, it binds to a part of OH ⁻ generated in the positive electrode 13 and Mg (OH) _2. And settles at the bottom of the electrochemical tank 10. Therefore, the pH of the electrolyte aqueous solution 11 is determined by the concentration of OH ⁻ remaining in the electrolyte aqueous solution 11, and the electrolyte aqueous solution 11 in the present invention is alkaline water having a pH of 10 to 12.

  The positive electrode 13 is, for example, a positive electrode body composed of a conductive porous carrier and a catalyst supported on the porous carrier, and a gas containing oxygen, for example, air, disposed adjacent to the positive electrode body and supplying oxygen to the positive electrode body. A gas supply unit (not shown) that generates hydroxide ions from oxygen and water in cooperation with the catalyst. Examples of the porous carrier include porous carbon materials, specifically, carbon black such as acetylene black, furnace black, channel black, and ketjen black, and conductive carbon particles such as graphite and activated carbon. Further, carbon fibers such as vapor grown carbon fibers, carbon nanotubes, and carbon nanowires can also be used. On the other hand, examples of the catalyst include fine particles composed of platinum, iron, cobalt, nickel, palladium, silver, ruthenium, iridium, molybdenum, manganese, a metal compound thereof, and an alloy containing two or more of these metals. It is done. This alloy is preferably an alloy containing at least two of platinum, iron, cobalt and nickel. For example, platinum-iron alloy, platinum-cobalt alloy, iron-cobalt alloy, cobalt-nickel alloy, iron-nickel alloy And iron-cobalt-nickel alloy.

  As the negative electrode 14, magnesium which is abundant on the earth, has a low environmental load, and has a large ionization tendency is preferable, but other preferable materials include base metals such as sodium, zinc and aluminum.

  The external load R is not particularly limited, and examples thereof include lighting equipment that can be used with direct current, a heater, and a simple measuring instrument (temperature, water quality, flow rate). Alternatively, the external load R may be an inverter circuit that converts direct current to alternating current, and the alternating current power that has been subjected to alternating current conversion by the inverter circuit can also be used in general electrical equipment.

  1 includes a plurality of electrochemical tanks 10, which may be connected in series or in parallel. When the voltage is increased by connecting in series, a large amount of charge can be stored even if the capacitor used in the circuit unit 20 described later is a capacitor having a small capacity. In other words, the circuit unit 20 can be reduced in size.

  Next, the circuit unit 20 will be described in detail with reference to FIG. The circuit unit 20 includes an electrode connection terminal 21a connected to the positive electrode 13 of the electrochemical tank 10, an electrode connection terminal 21b connected to the negative electrode 14, and a pair of external connection terminals 22a and 22b connected to the external load R. A charging / discharging unit 25a composed of a pair of charging / discharging capacitor 23a and a four-pole switch 24a, a charging / discharging unit 25b composed of a pair of charging / discharging capacitor 23b and a four-pole switch 24b, a charging / discharging capacitor 23c and a four-pole switch 24c. Between the charge / discharge part 25c which consists of a pair, the discharge resistor 26 for limiting the discharge current of these charge / discharge parts, the ammeter 27 connected to the electrode connection terminal 21a, and the external connection terminals 22a and 22b A single-pole switch 30 and four-pole switches 24a, 24b, and 24c connected by wiring between the connected smoothing capacitor 28 and voltmeter 29, and electrode connection terminals 21a and 21b. Switching the control signals a, b, by c, a control unit 31 which can be ON / OFF monopolar switch 30 by the control signal d, the.

  One terminal of the charge / discharge capacitors 23a, 23b, and 23c is connected to the negative electrode 14 of the electrochemical tank 10 via the electrode connection terminal 21b, and the other terminal is connected to each of the terminals 24a0 and 24a0 of the four-pole switch 24a. The wiring is connected to the terminal 24b0 of the four-pole switch 24b and the terminal 24c0 of the four-pole switch 24c.

  The four-pole switches 24a, 24b, and 24c are changeover switches that switch connection destinations of the charge / discharge capacitors 23a, 23b, and 23c. More specifically, the first terminals 24a1, 24b1, and 24c1 of the four-pole switch are open terminals, and the second terminals 24a2, 24b2, and 24c2 of the four-pole switch are electrically connected via the ammeter 27 and the electrode connection terminal 21a. It is connected to the positive electrode 13 of the chemical tank 10, the third terminals 24a3, 24b3, 24c3 of the four-pole switch are connected to the external connection terminal 22a, and the fourth terminals 24a4, 24b4, 24c4 of the four-pole switch are for discharge. The resistor 26 is connected to the electrode connection terminal 21b.

  Therefore, the charging / discharging units 25a, 25b, and 25c are connected in parallel to each other.

  The charge / discharge capacitors 23a, 23b, 23c and the smoothing capacitor 28 are not particularly limited as long as they are large-capacity and quick charge / discharge capacitors, and for example, electric double layer capacitors can be preferably used.

  The four-pole switches 24a, 24b, 24c and the single-pole switch 30 are not particularly limited as long as they can be operated by electric signals and have a small internal resistance and can flow a large current, and may be a relay type or a semiconductor type.

  The discharge resistor 26 is a resistor that limits a discharge current when discharging the charge / discharge capacitors 23a, 23b, and 23c, and generates heat during discharge, and therefore preferably includes a cooling mechanism.

  The ammeter 27 is not particularly limited, but an ammeter that is not connected to a wire, for example, a clamp ammeter that clamps a wire and measures current using the Hall effect is preferable. Unlike the ammeter that inserts a resistor and reads the current from a voltage drop, the clamp ammeter does not hinder the current flowing in the circuit, so that a large current can flow through the circuit unit 20.

  The smoothing capacitor 28 can alleviate a rapid voltage fluctuation that occurs when the four-pole switch is switched.

  FIG. 3 shows another embodiment in which the circuit unit of the alkaline water generator 100 is a circuit unit 20a. One terminal of the charge / discharge capacitors 23a, 23b, and 23c of the circuit unit 20a is connected to the positive electrode 13 of the electrochemical tank 10 via the ammeter 27 and the electrode connection terminal 21a, and the other terminals are respectively The wiring is connected to the terminal 24a0 of the four-pole switch 24a, the terminal 24b0 of the four-pole switch 24b, and the terminal 24c0 of the four-pole switch 24c. In addition, the first terminals 24a1, 24b1, and 24c1 of the four-pole switch are open terminals, and the second terminals 24a2, 24b2, and 24c2 of the four-pole switch are connected to the negative electrode 14 of the electrochemical tank 10 through the electrode connection terminal 21b. The third terminals 24a3, 24b3, and 24c3 of the four-pole switch are connected to the external connection terminal 22b, and the fourth terminals 24a4, 24b4, and 24c4 of the four-pole switch are connected via the discharge resistor 26. It is connected to the electrode connection terminal 21a.

  Next, a method for generating alkaline water using the alkaline water generator of the present invention will be described.

  FIG. 4 shows a time chart showing the circuit operation when the load R is connected to the circuit unit 20 of the alkaline water generator 100 and the load is energized. More specifically, the voltage between the terminals of the charge / discharge capacitor 23a, the voltage between the terminals of the charge / discharge capacitor 23b in FIG. 5B, and the charge / discharge capacity in FIG. 23c, the current flowing through the single-pole switch 30, the current flowing through the ammeter 27, the current measured by the ammeter 27, and the external connection terminal measured by the voltmeter 29. Are shown along with the state of each switch.

First, the current flowing through the ammeter 27 will be described method of switching the four-pole switch when it becomes less than a preset current threshold I _th.

At time _{t 0,} the charge and discharge capacitor 23a, 23b, 23c are in the initial state where no charge is accumulated, quadrupole switches 24a, 24b, 24c to each of the first terminal 24a1,24b1,24c1 none The charging / discharging units 25a, 25b, and 25c are electrically connected, so that the voltage output (voltage of the voltmeter 29) between the external connection terminals 22a and 22b is zero. However, since the monopolar switch 30 is turned on, the current flows from the positive electrode 13 to the negative electrode 14 via the electrode connection terminal 21a, the ammeter 27, the single electrode switch 30, and the electrode connection terminal 21b, and is electrochemical. hydroxide ions according to the amount of current I ₀ in the tank 10 is generated.

At time _{t 1,} a single-pole switch 30 to OFF, the charging mode by switching the four-pole switch 24a to the second terminal 24a2. Charging starts when the charging / discharging capacitor 23a is connected to the positive electrode 13, and the voltage between the terminals of the charging / discharging capacitor 23a gradually increases. However, since the potential difference for driving the current decreases conversely, the ammeter 27 The current flowing through I decreases from I ₀ .

In time t _2, the current through the ammeter 27 detects that it has decreased to the threshold I _th set in advance, and the load current mode by switching the four-pole switch 24a to the third terminal 24a3, a quadrupole switch 24b second Switch to terminal 24b2 to enter the charging mode. Discharge capacitor 23a which has been charged to voltages V ₁ when the current I _th is, by being connected to the external connection terminal 22a, the load current to the external load R to the voltages V ₁ and the initial value starts. Then, with the outflow of the charge from the charge and discharge capacitor 23a, the voltage between the terminals of the charge and discharge capacitor 23a is going to gradually decrease from V _1. On the other hand, the current flowing through the ammeter 27 temporarily recovers to I ₀ because the charging / discharging capacitor 23b starts to be charged. Thereafter, when the terminal voltage of the charge and discharge capacitor 23b gradually becomes high, the potential difference to drive current for becomes smaller Conversely, the current through the ammeter 27 decreases from I ₀ again.

At time _{t 3,} the current flowing through the ammeter 27 detects that it has decreased again to the threshold _{I th,} and the discharge mode by switching the four-pole switch 24a to the fourth terminal 24a4, switches the four-pole switch 24b to the third terminal 24b3 The load energization mode is set, and the four-pole switch 24c is switched to the second terminal 24c2 to enter the charge mode. Inter-terminal voltage of the charge and discharge capacitor 23a, which had been reduced already to V ₂ due to the load current at time t _3, by charging and discharging capacitor 23a is discharged through the discharging resistor 26, a charge and discharge The voltage between the terminals of the capacitor 23a rapidly decreases to zero. Meanwhile, the voltage of the voltmeter 29, which had been lowered to a voltage V _2, by being connected to the charge and discharge capacitor 23b that is charged to the voltage V _1, to recover the voltage V _1, to continue the load current be able to. Then, with the outflow of the charge from the charge and discharge capacitor 23b, terminal voltage and voltmeter 29 voltage of the charge and discharge capacitor 23b is gradually decreased from progressively V _1. In addition, charging starts with the charging / discharging capacitor 23c, and the current flowing through the ammeter 27 is restored to I ₀ again. However, as the terminal voltage of the charging / discharging capacitor 23c gradually increases, the potential difference for driving the current decreases. order to make it, the current flowing through the ammeter 27 decreases from I _0.

At time _{t 4,} the current flowing through the ammeter 27 detects that it has decreased again to the threshold _{I th,} and the charge mode by switching the four-pole switch 24a to the second terminal 24a2, switches the four-pole switch 24b to the fourth terminal 24b4 The discharge mode is set, and the four-pole switch 24c is switched to the third terminal 24c3 to set the load energization mode. Charging starts when the charging / discharging capacitor 23a is connected to the positive electrode 13, and the voltage between the terminals of the charging / discharging capacitor 23a gradually increases. However, since the potential difference for driving the current decreases conversely, the current flowing through a total of 27 decreases from I _0.

At time _{t 5,} the current flowing through the ammeter 27 detects that it has decreased again to the threshold _{I th,} the load current mode by switching the four-pole switch 24a to the third terminal 24a3, a quadrupole switch 24b to the second terminal 24b2 Switching to the charging mode, switching the four-pole switch 24c to the fourth terminal 24c4 to the discharging mode.

At time _{t 6,} the current flowing through the ammeter 27 detects that it has decreased again to the threshold _{I th,} and the discharge mode by switching the four-pole switch 24a to the fourth terminal 24a4, switches the four-pole switch 24b to the third terminal 24b3 The load energization mode is set, and the four-pole switch 24c is switched to the second terminal 24c2 to enter the charge mode.

  Thereafter, the three four-pole switches are switched while shifting the phase, and at least one set of the charging / discharging unit is set to a charging mode charged by the electric charge generated in the electrochemical tank 10, and another set of the charging / discharging unit is an external connection terminal. The load energization mode in which the external load R is energized via 22a and 22b, and the discharge mode in which another set of charging / discharging units are discharged via the discharge resistor 26 are set. By repeating this cycle, the load energization is performed. However, alkaline water can be generated.

  The switching of the four-pole switch may be performed at a preset time interval because the control unit 31 includes a timer. However, in order to periodically repeat the above cycle, the resistance value of the discharge resistor 26 is adjusted so that the discharge rate in the discharge mode is higher than the charge rate in the charge mode, and the discharge mode is changed before entering the charge mode. It is necessary to reset the inter-terminal voltage of the charging / discharging capacitor to zero so as to be terminated. Further, if the time interval for switching the four-pole switch is lengthened, the average current can be reduced and the amount of alkaline water generated can be reduced as can be seen with reference to FIG.

  In the present invention, the charging / discharging unit may include three or more sets. For example, in the case of 5 sets, two sets of charge holding modes for holding charges by switching the four-pole switch to the first terminal between the charging mode and the load energizing mode are inserted, and charging mode → charge holding mode → charge You may drive | operate by the cycle of holding | maintenance mode-> load energization mode-> discharge mode. When the load increases rapidly, a method of securing the load energization amount by switching the two charge / discharge units in the charge holding mode to the load energization mode may be used.

  In addition, the load energization may be a method of directly energizing a heater or the like, but may be a method of energizing the load after increasing or decreasing the DC voltage via a DC-DC converter. Or the method of converting into alternating current with an inverter circuit and energizing a load may be used. Power conversion can be expanded by power conversion.

  Alternatively, the alkaline water generating apparatus 100 may be a method in which the four-pole switch is opened, the single-pole switch 100 is turned on, and alkaline water is generated without applying a load.

  Next, an embodiment of an exhaust gas treatment apparatus incorporating the alkaline water generation apparatus 100 described above will be described.

  FIG. 5 shows an outline of an exhaust gas purifying apparatus 1000 according to the present invention. The exhaust gas treatment apparatus 1000 includes an exhaust gas absorption tower 200 that neutralizes an acid contained in the exhaust gas by injecting alkaline water, an alkaline water generation apparatus 100 that produces alkaline water, and a scum such as precipitates contained in the alkaline water. A solid-liquid separation unit 300 that separates and removes, a water quality analysis unit 400 that analyzes the quality of alkaline water, a control unit 500 that controls the alkaline water generation device 100 based on the analyzed quality of alkaline water, and an alkaline water generation device A pump 600 for supplying seawater to 100 is provided.

  The exhaust gas absorption tower 200 includes an exhaust gas inlet 200b that is disposed on a side surface of the exhaust gas absorption tower main body 200a and introduces exhaust gas, an exhaust duct 200c that is disposed above the exhaust gas absorption tower main body 200a and exhausts purified exhaust gas, and alkaline water The exhaust nozzle 200d for spraying the mist and the demister 200e for removing mist from the exhaust gas, the exhaust gas introduced from the exhaust gas inlet 200b comes into contact with the alkaline water injected from the injection nozzle 200d, purified, and exhausted. It is exhausted from the duct 200c. On the other hand, the alkaline water is injected from the injection nozzle 200d, comes into contact with the exhaust gas, absorbs and neutralizes the acid contained in the exhaust gas, and accumulates at the bottom of the exhaust gas absorption tower 200. The alkaline water AW collected at the bottom of the exhaust gas absorption tower 200 is consumed in the process of neutralizing the acid contained in the exhaust gas, and the alkali ion is consumed and the alkalinity is lowered.

  Therefore, the alkaline water AW having reduced alkalinity is sent to the alkaline water generator 100 through the pipe L1, the hydroxide ion concentration is increased in the alkaline water generator 100, and the liquid is sent to the injection nozzle 200d through the pipe L3. Circulation is performed by spraying from the spray nozzle 200d. The quality of the alkaline water sent from the alkaline water generator 100 to the injection nozzle 200d is measured, for example, by the water quality analysis unit 400 provided in the middle of the pipe L3. The pH value measured by the water quality analysis unit 400 is sent to the control unit 500. The controller 500 can adjust the alkalinity of the alkaline water by controlling the alkaline water generator 100.

  For example, the time interval for switching the four-pole switch incorporated in the circuit unit 20 of the alkaline water generator 100 can be increased, the average current can be reduced, and the amount of alkaline water produced can be reduced.

  The fats and oils and fine particles contained in the exhaust gas are trapped by alkaline water and combined with magnesium ions and hydroxide ions contained in the alkaline water to form a precipitate. Is extracted and sent to the solid-liquid separator 300 through the pipe L4. The alkaline water separated by the solid-liquid separator 300 passes through the pipe L6 and merges with the pipe L3 to form the exhaust gas absorption tower 200. To the injection nozzle 200d. The solid content separated by the solid-liquid separation unit 300 is discharged through the pipe L5 and becomes scum. A part of the alkaline ionized water is discharged out of the exhaust gas processing apparatus 1000 together with the exhaust gas and the scum. Therefore, in order to replenish the alkaline ionized water that has been taken out, the pump 600 whose flow rate is controlled by the control unit 500 Seawater as a raw material can be supplied to the alkaline water generator 100 through the pipe L2.

  Moreover, the external load R can be connected to the external connection terminals 22a and 22b provided in the circuit unit 20 of the alkaline water generator 100, and the electric power generated along with the alkaline water generation can be used (see FIG. 1). The external load is not particularly limited, and for example, a lighting device (light bulb) or a simple measuring instrument (temperature, water quality, flow rate) can be connected. Alternatively, the external load R may be an inverter circuit that converts direct current to alternating current, and the alternating current power that has been subjected to alternating current conversion by the inverter circuit can also be used in general electrical equipment.

10 Electrochemical tank 11 Electrolyte aqueous solution (also called alkaline water)
DESCRIPTION OF SYMBOLS 12 Electrochemical tank main body 13 Positive electrode 14 Negative electrode 20, 20a Circuit part 21a, 21b Electrode connection terminal 22a, 22b External connection terminal 23a, 23b, 23c Charge / discharge capacity 24a, 24b, 24c Four pole switch 24a0, 24b0, 24c0 For charge / discharge Terminals 24a1, 24b1, 24c1 connected to the capacitor First terminals 24a2, 24b2, 24c2 of the four-pole switch Second terminals 24a3, 24b3, 24c3 of the four-pole switch Third terminals 24a4, 24b4, 24c4 of the four-pole switch 4th terminal 25a, 25b, 25c Charging / discharging part 26 Discharging resistance 27 Ammeter 28 Smoothing capacity 29 Voltmeter 30 Single pole switch 30a, 30b Terminal 31 of single pole switch Control part 100 Alkaline water generating apparatus 200 Exhaust gas absorption tower 200a Exhaust gas absorption tower body 200b Exhaust Gas inlet 200c Exhaust duct 200d Injection nozzle 200e Demister 300 Solid-liquid separation unit 400 Water quality analysis unit 500 Control unit 600 Pump 1000 Exhaust gas treatment device AW Alkaline water L1 to L6 Pipe R External load a, b, c Control signal

Claims (11)

An electrochemical tank having a positive electrode and a negative electrode immersed in an aqueous electrolyte solution;
A charge / discharge capacitor connected at one end to either the positive electrode or the negative electrode, and a four-pole switch connected to the other end of the charge / discharge capacitor and capable of switching the connection destination of the charge / discharge capacitor. If one end of the charging / discharging capacitor is wired to the negative electrode, one of the connection destinations of the four-pole switch is the positive electrode, and one end of the charging / discharging capacitor is wired to the positive electrode. If so, one of the connection destinations of the four-pole switch is configured to be the negative electrode, and is composed of a set of the charging capacitor and the four-pole switch, and a plurality of sets of charge / discharge units connected in parallel to each other When,
A pair of external connection terminals connectable to an external load;
A discharge resistor for limiting the discharge current of the charge / discharge section;
A control unit for controlling switching of the four-pole switch;
Using an alkaline water generator comprising:
Switching the four-pole switch provided in each of the plurality of sets of charging / discharging units while shifting the phase, a charging mode in which at least one set of the charging / discharging units is charged with electric charges generated in the electrochemical tank, and the charging / discharging unit As at least one other set of a load energization mode to energize the external load through the external connection terminal, as a discharge mode to discharge at least another set of the charging and discharging unit through the discharge resistor, An alkaline water generating method characterized by generating alkaline water while applying a load.   The alkaline water generation method according to claim 1, wherein the control unit switches the four-pole switch when a charging current for charging the charging / discharging unit becomes equal to or less than a preset threshold value.   The alkaline water generation method according to claim 1, wherein the control unit switches the four-pole switch at a preset time interval. An electrochemical tank having a positive electrode and a negative electrode immersed in an aqueous electrolyte solution;
A charge / discharge capacitor connected at one end to either the positive electrode or the negative electrode, and a four-pole switch connected to the other end of the charge / discharge capacitor and capable of switching the connection destination of the charge / discharge capacitor. And a plurality of sets of charging / discharging units that are composed of a set of the charging capacity and the four-pole switch and are connected in parallel to each other;
A pair of external connection terminals connectable to an external load;
A discharge resistor for limiting the discharge current of the charge / discharge section;
A control unit for controlling switching of the four-pole switch;
In an alkaline water generator comprising:
The first terminal of the four-pole switch is an open terminal,
The second terminal of the four-pole switch is connected to the positive electrode if one end of the charge / discharge capacitor is connected to the negative electrode, and one end of the charge / discharge capacitor is connected to the positive electrode. Is connected to the negative electrode,
The third terminal of the four-pole switch is wired to the other external connection terminal that forms a pair with the external connection terminal that is wired to the charge / discharge capacitor,
The fourth terminal of the four-pole switch is connected to the negative electrode through a discharge resistor if one end of the charge / discharge capacitor is connected to the negative electrode, and one end of the charge / discharge capacitor is connected to the positive electrode. If connected, the alkaline water generator is connected to the positive electrode through a discharging resistor.   The alkaline water production | generation apparatus of Claim 4 which has arrange | positioned the ammeter in the middle of the wiring which connects the said electrochemical tank and the 2nd terminal of the said 4-pole switch.   The alkaline water generating device according to claim 5, wherein the control unit is configured to switch the four-pole switch when a current measured by the ammeter becomes equal to or less than a preset current value.   The alkaline water generator according to claim 4 or 5, wherein the control unit includes a timer and is configured to switch the four-pole switch at a preset time interval.   The alkaline water generating apparatus according to claim 4, wherein a smoothing capacitor is connected between the pair of external connection terminals.   The alkaline water generator according to any one of claims 4 to 8, wherein the charge / discharge capacitance and the smoothing capacitance are electric double layer capacitors.   The alkaline water production | generation apparatus in any one of Claims 4-9 by which the monopolar switch was wire-connected between the positive electrode and negative electrode of the said electrochemical tank.   An exhaust gas purification apparatus comprising the alkaline water generator according to claim 4, wherein the alkaline water is circulated through a scrubber to neutralize an acid contained in the exhaust gas.