JPH10156168A - Intermittent ozone feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the subject feeder, to reduce cost and to secure the stability when the feeder is operated by using the pipeline of an ozone adsorbing and desorbing tower for the cooling water and heating water. SOLUTION: The ozonized oxygen generated in an ozonizer 1 is introduced into an ozone adsorbing and desorbing tower 2, and only the ozone is adsorbed. Since the amt. of ozone adsorbed in the ozone adsorbing and desorbing tower 2 is increased as the temp. of an adsorbent lowers, the cooling water by a cooler 7 flows into the tower 2 in the ozone adsorption period to cool the adsorbent to -30 deg.C. In the ozone desorption period, a brine preheated by a heater 6a in a brine tank 6 flows into the tower 2 to heat the adsorbent cooled to a low temp. in the adsorption period, and the desorption of ozone is promoted. The pipeline of the tower 2 is used for the cooling water and heating water in this case, and a circulating pump 9 is used in common. Consequently, the constitution of the whole feeder as well as the structure of the tower 2 is simplified, and the assembling cost is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an intermittent ozone supply device.

[0002]

2. Description of the Related Art Ozone has a strong oxidizing power and is non-polluting, and thus has been widely applied in the fields of environment and chemistry. As a method of using this ozone, there are a method of using continuously and a method of using it intermittently. Hereinafter, a brief description will be given of a process leading to the adoption of the intermittent ozone use method.

[0003] In a cooling water system such as a power plant or a chemical plant, microorganisms such as algae and shellfish adhere to the inner wall of a water pipe and a heat exchanger, causing a decrease in water supply, a blockage of cooling water piping, and a decrease in heat exchange efficiency. In addition, a great deal of energy is spent on maintenance, and a large amount of energy is lost. Microorganisms also occur in semiconductor-related ultrapure water production lines, which is one of the factors that increase the product defect rate.

[0004] In order to prevent such foreign matter from adhering, a method of administering a large amount of a chlorine-based disinfectant has conventionally been performed. Problems arise, and chlorine ions remain in the system after decomposition.

On the other hand, ozone is a stronger disinfectant than chlorine and decomposes into harmless oxygen molecules in water in a relatively short time, so that it is an excellent antiadhesion agent. However, the cost of producing ozone is higher than that of chlorine. Therefore, high-concentration ozone is applied several times a day (1-2 times), for example.
It has been found that the intermittent injection in a short time (5 minutes each) can prevent the adhesion of microorganisms, and an intermittent ozone supply device for this purpose has been developed.

FIG. 15 is a block diagram showing a conventional intermittent ozone supply apparatus of this kind. In the figure, an ozone generator 31 that generates ozone using oxygen as a raw material, an ozone adsorption / desorption tower 32 that adsorbs ozone generated by the ozone generator 31 with an adsorbent (eg, silica gel) and desorbs by heating, A circulation system is configured by a circulation blower 33 that circulates ozonized oxygen that could not be adsorbed by the ozone adsorption / desorption tower 32, and the ozone generator 31 includes a cooling device 31.
a. Oxygen for generating ozone is supplied by the oxygen supply source 34, the electric valves 35a and 35b are opened during the circulation of ozonized oxygen, and the ozone adsorption / desorption tower 3 is opened.
2 is depressurized and the electric valve 35c is opened when desorbing ozone. The warm brine tank 36 has a brine for heating the ozone adsorption / desorption tower 32, and has a heater 36a.
Is provided to heat the brine, and a contact 36b of the electromagnetic contactor turns on and off the commercial power supply 36c to adjust the brine temperature. The refrigerator 37 cools the ozone adsorption / desorption tower 32 during ozone adsorption, and the ejector 38 depressurizes the ozone adsorption / desorption tower 32 during ozone desorption.

Next, the operation of the above device will be described.
FIG. 16 is a diagram showing an operation sequence of the present apparatus. This operation is divided into an ozone adsorption operation and an ozone desorption operation.
First, the ozone adsorption operation will be described. The ozone generator 31, the ozone adsorption / desorption tower 32, and the circulation blower 33 constitute a circulation system in this order, and the electric valves 35a and 35b are open and the electric valve 35c is closed. Ozonized oxygen generated by the ozone generator 31 is introduced into the adsorption / desorption tower 32, where only ozone is adsorbed by the adsorbent. The ozone generator 31 is cooled by the cooling device 31a while ozonized oxygen is being generated (during ozone generation). The amount of ozone adsorbed in the ozone adsorption / desorption tower 32 increases as the temperature of the adsorbent (eg, silica gel) decreases, and is cooled to −30 ° C. or less by the refrigerator 37 during the ozone adsorption period.

Next, the ozone desorbing operation will be described. When the ozone desorbing operation starts, the electric valves 35a and 35b are closed, the electric valve 35c is opened, and the warm brine tank 3 is opened.
The brine in 6 flows into the adsorption / desorption tower 32, and the temperature of the adsorbent, which has been cooled to a low temperature during the adsorption operation, is raised for a preset time to promote the desorption of ozone. The brine is heated by a heater 36a, and a commercial power supply 36c is turned on and off at a contact 36b of an electromagnetic contactor as shown in FIG. 16 to adjust the temperature of the brine.

When the heating operation by the warm brine for desorption of ozone is completed, water flows to the ejector 38, the circuit is suctioned under reduced pressure, the electric valve 35c is opened, and ozone is desorbed from the adsorption / desorption tower 32, Generates ozone water. In order to desorb ozone by depressurizing and sucking the ozone adsorption / desorption tower 32 as described above, it is necessary to input the conditions under which water flows from the outside of the apparatus to the ejector 38 to the apparatus. After the desorption, the oxygen charging operation is performed, and the adsorption operation is started again.

[0010]

Since the conventional intermittent ozone supply apparatus is constructed as described above, the cooling pipe from the refrigerator to the ozone adsorption / desorption tower and the hot brine tank from the ozone adsorption / desorption tower are connected to the cooling pipe. It is necessary to install two types of pipes, ie, heating pipes to be connected, and there is a problem that the structure becomes complicated.

Further, since the ozone adsorption / desorption tower is directly cooled by the refrigerant (eg, chlorofluorocarbon) of the refrigerator, if the cooling capacity of the refrigerator is too large with respect to the required cooling capacity of the ozone adsorption / desorption tower, the refrigeration is not performed. Since the machine repeatedly starts and stops, it is difficult to maintain stable operation of the refrigerator.

Further, since the ozone desorption operation time is set in advance by a timer, it is impossible to confirm the state of ozone adsorption by the adsorbent of the ozone adsorption / desorption tower. There is a drawback that the ozone generator continues to generate ozone even after that, even though it is already in a saturated state, a useless operation occurs.

Further, since the temperature control of the warm brine is performed by turning on and off the contacts of the electromagnetic contactor, when the capacity of the heater is large, the contacts at the time of opening the contacts of the electromagnetic contactor cause the contacts to be broken. There was a problem that the heater was broken due to stress caused by instantaneous pressurization of the commercial power supply when the contacts of the electromagnetic contactor were turned on and off. Furthermore, since the ozone adsorption / desorption tower was directly cooled by the refrigerant (Freon) of the refrigerator, a separate cooling device had to be provided to cool the ozone generator.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can simplify not only the structure of the ozone adsorption / desorption tower but also the entire structure of the intermittent ozone supply apparatus, thereby reducing the cost and the operation time of the apparatus. The purpose is to ensure the stability of

[0015]

According to a first aspect of the present invention, there is provided an intermittent ozone supply apparatus, comprising: cooling water supplied from a cooling means for cooling an ozone adsorption / desorption tower when adsorbing ozone; and ozone absorption when ozone is desorbed. A common pipe is provided in which heating water supplied from a heating means for heating the desorption tower flows.

According to a second aspect of the present invention, there is provided an intermittent ozone supply apparatus, wherein a pump for circulating cooling water and heated water is provided in a common pipe.

According to a third aspect of the present invention, there is provided an intermittent ozone supply apparatus, wherein a cooling water tank is provided on a discharge side of a cooling means for cooling an ozone adsorption / desorption tower when ozone is adsorbed.

In the intermittent ozone supply apparatus according to a fourth aspect of the present invention, a two-way valve is provided on each of an inlet side and an outlet side of a cooling means for cooling the ozone adsorption / desorption tower when adsorbing ozone, and the ozone is supplied when ozone is desorbed. Two-way valves are also provided on the inlet side and the outlet side of the heating means for heating the adsorption / desorption tower.

The intermittent ozone supply apparatus according to a fifth aspect of the present invention is provided with a three-way valve having the common side connected to the common pipe side between the cooling means and the heating means and the common pipe.

According to a sixth aspect of the present invention, there is provided an intermittent ozone supply device, wherein an ozone densitometer is provided on each of an inlet side and an outlet side of an ozone adsorption / desorption tower, and a differential comparison for differentially comparing output signals of the ozone densitometer is provided. A vessel is provided.

The intermittent ozone supply apparatus according to claim 7 of the present invention is provided with a cooling means controlling temperature detector on the discharge side of the cooling means for cooling the ozone adsorption / desorption tower during ozone adsorption.

An intermittent ozone supply device according to claim 8 of the present invention is a power control device comprising a semiconductor element between a heater and a power supply in a heating means for heating an ozone adsorption / desorption tower at the time of desorption of ozone. It is provided.

According to a ninth aspect of the present invention, there is provided an intermittent ozone supply apparatus in which a cooling water pipe is provided between a cooling means for cooling an ozone adsorption / desorption tower during ozone adsorption and an ozone generator.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 shows the configuration of an intermittent ozone supply device according to Embodiment 1 of the present invention. In the figure, an ozone generator 1 that generates ozone by silent discharge or the like using oxygen as a raw material, and the ozone generated by the ozone generator 1 is adsorbed by an adsorbent (eg, silica gel) and desorbed by heating. A circulation system is constituted by the ozone adsorption / desorption tower 2 and a circulation blower 3 for circulating ozonized oxygen that could not be adsorbed by the ozone adsorption / desorption tower 2. Oxygen for generating ozone is supplied from the oxygen supply source 4 and the electric valves 5a, 5
b is opened, and the pressure of the ozone adsorption / desorption tower 2 is reduced, and the electric valve 5c is opened when desorbing ozone. The warm brine tank 6 has a brine for heating the ozone adsorption / desorption tower 2, a heater 6a is provided for heating the brine, and a contact 6b of the electromagnetic contactor adjusts the brine temperature. Therefore, the commercial power supply 6c is turned on and off.
The cooling device 7 cools the ozone adsorption / desorption tower 2 during ozone adsorption, and the ejector 8 depressurizes the ozone adsorption / desorption tower 2 during ozone desorption. The cooling water and the warming water are circulated by a circulation pump 9, and the cooling water and the warming water are supplied to a common pipe 10 at the time of ozone adsorption and ozone desorption.
a, 10b.

Next, the operation will be described. FIG. 2 is a diagram showing an operation sequence of the first embodiment, and this operation is divided into an ozone adsorption operation and an ozone desorption operation. First, the ozone adsorption operation will be described. The ozone generator 1, the ozone adsorption / desorption tower 2, and the circulation blower 3 are respectively operated to open the electric valves 5a and 5b and close the electric valve 5c. At this time, the ozone generator 1, the ozone adsorption / desorption tower 2, the circulation blower 3
Constitutes an oxygen circulation system in this order, and the oxygen supply source 4
Is supplied from the reactor so that the internal pressure of the circulation system becomes constant (0.7 kg / cm ² G).

The ozonized oxygen generated by the ozone generator 1 is introduced into an ozone adsorption / desorption tower 2, where only ozone is adsorbed by an adsorbent (eg, silica gel). Oxygen that has not been ozonized by the ozone generator 1 is returned to the ozone generator 1 again by the circulation blower 3 and is reused. The amount of ozone adsorbed in the ozone adsorption / desorption tower 2 increases as the temperature of the adsorbent (eg, silica gel) becomes lower. Therefore, during the ozone adsorption period, the cooling water from the cooling device 7 supplies the circulating pump 9, the pipe 10a, and the ozone. It flows into the ozone adsorption / desorption tower 2 through the path of the adsorption / desorption tower 2 and the pipe 10b, and is cooled to −30 ° C. or lower. As described above, ozone is adsorbed to the ozone adsorption / desorption tower 2 for a preset time, and the ozone adsorption operation is completed.

Next, the operation of desorbing ozone will be described.
When the desorption operation of ozone is started, the electric valves 5a and 5b are closed, the electric valve 5c is opened, and the temperature is raised in advance by the heater 6a (normally 40).
° C) brine (warmed water) in the heated brine tank 6
Flows through the circulation pump 9, the pipe 10a, the ozone adsorption / desorption tower 2, and the pipe 10b into the ozone adsorption / desorption tower 2, and the adsorbent cooled to a low temperature during the adsorption operation is heated for a preset time. Promotes ozone desorption. When the heating operation using the heated water for desorption of ozone is completed, water flows into the ejector 8, the circuit is suctioned under reduced pressure, and ozone is desorbed from the ozone adsorption / desorption tower 2 to generate ozone water.

The operation of adsorbing ozone is performed over a long period of time (11 to 23 hours). Desorption of ozone is performed by raising the temperature of the ozone adsorption / desorption tower 2 (30 to 60 minutes) and reducing the pressure (about 5 minutes) as described above.
In a shorter time. After the desorption is completed, the oxygen charging operation is performed, and the adsorption operation is started again.

In the first embodiment, the cooling water pipe and the heating water pipe of the ozone adsorption / desorption tower 2 are shared, and the circulation pump 9 for circulating the cooling water and the heated water is also shared. Accordingly, not only the structure of the ozone adsorption / desorption tower 2 but also the structure of the entire intermittent ozone supply device is simplified, and the effect of reducing the assembly cost is obtained.

Embodiment 2 FIG. In the first embodiment, the cooling water and heating water pipes 10 a and 10
b, the cooling water and the warming water circulation pump 9 are shared. In the second embodiment, in addition to the configuration of the first embodiment, a cooling pipe is provided on the discharge pipe side of the cooling device 7. The case where the water tank 11 is provided will be described.

FIG. 3 is a configuration diagram showing an intermittent ozone supply device according to the second embodiment. In the figure, a cooling water tank 11 is provided on the discharge side of the cooling device 7, and when the required cooling capacity of the ozone adsorption / desorption tower 2 is large, a large amount of cooling water is discharged from the cooling water tank 11. So that
Conversely, when the required cooling capacity of the ozone adsorption / desorption tower 2 is small, a small amount of cooling water is discharged from the cooling water tank 11. By adjusting the amount of water in the cooling water tank 11 in this way, it is easy to maintain a balance between the required cooling capacity of the ozone adsorption / desorption tower 2 and the cooling capacity of the cooling device 7.

Embodiment 3 FIG. In the first and second embodiments, since the valve for isolating the warm brine tank 6 and the cooling device 7 is not attached, the heating water and the cooling water are mixed during the ozone adsorption and desorption operations, and the temperature of the heating water is reduced. A decrease and an increase in the temperature of the cooling water may occur. Therefore, in the third embodiment, a valve is provided so that the heating water and the cooling water do not mix.

FIG. 4 is a configuration diagram showing an intermittent ozone supply device according to the third embodiment, and FIG. 5 is a diagram showing an operation sequence. In FIG. 4, in addition to the configuration of FIG.
The two-way electric valves 12a and 12b are mounted on the inlet side and the outlet side, respectively, and the two-way electric valves 12c and 12d are further mounted on the inlet side and the outlet side of the warm brine tank 6.

In the operation of this embodiment, as shown in the operation time chart of FIG. 5, the valves 12a and 12b are opened and the valve 1
2c and 12d are closed, and when ozone is desorbed, the valves 12a and 12b are closed.
By opening d, it is possible to prevent the temperature of the warming water from decreasing and the temperature of the cooling water from rising due to the mixing of the warming water and the cooling water.

Embodiment 4 FIG. FIG. 6 is a configuration diagram illustrating an intermittent ozone supply device according to the fourth embodiment, and FIG. 7 is a diagram illustrating an operation sequence. In FIG. 6, in addition to the configuration of FIG. 3, a three-way electric valve 13a, 1 having a common side connected to a common piping side of cooling water and warming water circulating in the ozone adsorption / desorption tower 2 is shown.
3b is provided.

As shown in the operation time chart of FIG. 7, the operation of this embodiment is performed at the time of ozone adsorption.
Open only the cooling device 7 side of the one-way electric valves 13a and 13b,
By closing the warm brine tank 6 side, the cooling water is caused to flow to the ozone adsorption / desorption tower 2 by the circulation pump 9, and when the ozone is desorbed, only the warm brine tank 6 side is opened and the cooling device 7 side is closed. The heated water can be flowed to the ozone desorption tower by the circulation pump 9. With the configuration as described above, by mixing the warming water and the cooling water, it is possible to suppress a decrease in the temperature of the warming water and an increase in the temperature of the cooling water, and further, as compared with the case of Embodiment 3,
This has the effect of reducing the number of valves.

Embodiment 5 In the first to fourth embodiments or the related art, the ozone adsorption operation time is set in advance by the timer, and therefore, the ozone adsorption state of the ozone adsorption / desorption tower 2 by the adsorbent cannot be confirmed. Therefore, although the ozone adsorption by the ozone adsorption / desorption tower 2 is already in a saturated state,
There is a disadvantage that the ozone generator 1 continues to generate ozone even after that, causing an unnecessary operation.

Therefore, in the fifth embodiment, as shown in the block diagram of FIG. 8, ozone concentration meters 14a and 14b are attached to the inlet side and the outlet side of the ozone adsorption / desorption tower 2, and the ozone concentration meters 14a and 14b are A differential comparator 15 for differentially comparing output signals (electric signals) is provided.

FIG. 9 is a diagram showing an operation sequence in the fifth embodiment. As shown in the operation time chart of FIG. 9, the output signals of the ozone concentration meters 14a and 14b are compared by the differential comparator 15, Ozone concentration meters 14a and 14b
When the difference between the output signals becomes equal to or less than the specified value, a pulse signal is output from the differential comparator 15 to terminate the ozone adsorption operation and start the desorption operation. With the above configuration, the ozone generation by the ozone generator 1 can be stopped when the adsorption of ozone by the ozone adsorption / desorption tower 2 becomes saturated.

Embodiment 6 FIG. FIG. 10 is a configuration diagram showing an intermittent ozone supply device according to the sixth embodiment. As shown in FIG.
And a control device 17 for controlling the operation of the cooling device 7 based on the signal from the temperature detector 16. In the above-described configuration, the cooling device 7 is controlled by the control device 17 so that the outlet temperature of the cooling tank 11 is always constant (usually −30 ° C.), so that stable operation of the cooling device 7 is obtained. There is an effect that can be.

Embodiment 7 FIG. In the above-described first to sixth embodiments or the related art, the temperature control of the warm brine is performed by turning on and off the contact 6b of the electromagnetic contactor. Therefore, when the capacity of the heater 6a is large, When the contact 6b of the contactor was opened, there was a problem that the contact was worn, and that the heater was disconnected due to the stress caused by turning on and off the contact 6b of the electromagnetic contactor.

Therefore, in the seventh embodiment, as shown in the configuration diagram of FIG. 11, a semiconductor element such as a thyristor regulator 18 is provided between the heater 6a and the commercial power supply 6c instead of the contact 6b of the electromagnetic contactor. And a temperature detector 19 for sending a temperature signal to the thyristor regulator 18 is provided in the hot brine tank 6.

FIG. 12 is a diagram showing an operation sequence of the seventh embodiment. In accordance with the operation time chart of FIG.
The operation will be described. If the temperature detector 19 detects that the brine temperature of the warm brine tank 6 has risen, a temperature signal is sent from the temperature detector 19 to the thyristor regulator 18, and the voltage applied to the heater 6a is reduced by the thyristor regulator 18. On the contrary, when the temperature detector 19 detects that the brine temperature of the warm brine tank 6 has dropped, the thyristor regulator 18 controls the voltage applied to the heater 6a to be large, and always controls the temperature. The temperature of the brine can be controlled to be equal to the set temperature.

As described above, according to the present embodiment, since the thyristor regulator 18 is composed of a semiconductor element, the contact of the electromagnetic contactor is prevented from being worn, and further, the instantaneous application of commercial power is eliminated. Therefore, there is an effect that it is possible to prevent a problem that the heater is disconnected or the like.

Embodiment 8 FIG. In the conventional example, since the ozone adsorption / desorption tower was directly cooled by the refrigerant (CFC) of the refrigerator, a separate cooling device had to be provided to cool the ozone generator. Therefore, in the eighth embodiment, as shown in the configuration diagram of FIG. 13, the cooling water pipe 20a is connected to the cooling water inlet side of the ozone generator 1 via the electric valve 21a.
Is connected to a cooling water pipe 10a connected to the ozone adsorption / desorption tower 2, and a cooling water pipe 20 is connected to a cooling water outlet side of the ozone generator 1 via an electric valve 21b.
b, and connect the pipe 20b to a cooling water pipe 10b connected to the ozone adsorption / desorption tower 2.

FIG. 14 is a diagram showing an operation sequence of the eighth embodiment. In accordance with the operation time chart of FIG.
The operation will be described. When ozone is adsorbed, the electric valves 21a and 21a are generated because the ozone generator 1 is generating ozone.
When b is opened, cooling water flows from the cooling device 7 to the ozone generator 1 to cool the ozone generator 1. Next, at the time of ozone desorption, since the ozone generator 1 has stopped generating ozone,
The motor-operated valves 21a and 21b are closed, and the heated water is supplied only to the ozone adsorption / desorption tower 2.

As described above, according to the present embodiment, the cooling water for cooling the ozone generator 1 can be supplied from the cooling device 7 for cooling the ozone adsorption / desorption tower 2. This has the effect that the cooling device can be eliminated.

[0048]

According to the intermittent ozone supply apparatus according to the first aspect of the present invention, a pipe of cooling water supplied from cooling means for cooling the ozone adsorption / desorption tower at the time of adsorption of ozone, and ozone adsorption / desorption at the time of desorption of ozone Because the piping of the heating water supplied from the heating means for heating the tower was configured with a common piping,
Not only the structure of the ozone adsorption / desorption tower, but also the structure of the entire intermittent ozone supply device is simplified, which has the effect of reducing assembly costs.

According to the intermittent ozone supply apparatus according to the second aspect of the present invention, since the pump for circulating the cooling water and the heating water is provided in the common pipe, the cooling water and the heating water can be effectively sent out with a simple configuration. can do.

According to the intermittent ozone supply apparatus according to the third aspect of the present invention, since the cooling water tank is provided on the discharge side of the cooling means for cooling the ozone adsorption / desorption tower when adsorbing ozone, the amount of water in the cooling water tank is reduced. By adjusting the temperature, it becomes easy to maintain the balance between the required cooling capacity of the ozone adsorption / desorption tower and the cooling capacity of the cooling device.

According to the intermittent ozone supply apparatus of the fourth aspect of the present invention, two-way valves are provided on the inlet side and the outlet side of the cooling means for cooling the ozone adsorption / desorption tower at the time of adsorption of ozone, and at the time of ozone desorption. Two-way valves are also provided on the inlet and outlet sides of the heating means for heating the ozone adsorption / desorption tower, so that the temperature of the warming water decreases and the temperature of the cooling water rises due to mixing of the warming water and the cooling water. Can be suppressed.

According to the intermittent ozone supply apparatus according to the fifth aspect of the present invention, the three-way valve having the common side connected to the common pipe side is provided between the cooling means and the heating means and the common pipe. And the cooling water are mixed, thereby suppressing a decrease in the temperature of the heating water and an increase in the temperature of the cooling water,
Further, there is an effect that the number of valves can be reduced as compared with the two-way valve.

According to the intermittent ozone supply apparatus of the present invention, an ozone densitometer is provided on each of the inlet side and the outlet side of the ozone adsorption / desorption tower, and the difference between the output signals of the ozone densitometer is compared. Since a dynamic comparator was provided,
When the adsorption of ozone by the ozone adsorption / desorption tower becomes saturated, ozone generation by the ozone generator can be stopped.

According to the intermittent ozone supply apparatus of the present invention, the cooling means controlling temperature detector is provided on the discharge side of the cooling means for cooling the ozone adsorption / desorption tower at the time of adsorbing ozone. The temperature is controlled to be constant, and a stable operation of the cooling device can be obtained.

According to the intermittent ozone supply apparatus according to the eighth aspect of the present invention, a power control device comprising a semiconductor element between a heater and a power supply in a heating means for heating an ozone adsorption / desorption tower at the time of desorption of ozone. Is provided, there is an effect that it is possible to prevent the contact of the electromagnetic contactor from being worn, and further to prevent a problem such as disconnection of the heater.

According to the intermittent ozone supply apparatus of the ninth aspect of the present invention, since the cooling water pipe is provided between the cooling means for cooling the ozone adsorption / desorption tower during ozone adsorption and the ozone generator, the ozone generator is provided. This has the effect of eliminating the need for a dedicated cooling device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an intermittent ozone supply device according to Embodiment 1 of the present invention.

FIG. 2 is an operation time chart of the intermittent ozone supply device according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram showing an intermittent ozone supply device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram showing an intermittent ozone supply device according to Embodiment 3 of the present invention.

FIG. 5 is an operation time chart of an intermittent ozone supply device according to Embodiment 3 of the present invention.

FIG. 6 is a configuration diagram illustrating an intermittent ozone supply device according to a fourth embodiment of the present invention.

FIG. 7 is an operation time chart of an intermittent ozone supply device according to Embodiment 4 of the present invention.

FIG. 8 is a configuration diagram illustrating an intermittent ozone supply device according to a fifth embodiment of the present invention.

FIG. 9 is an operation time chart of an intermittent ozone supply device according to Embodiment 5 of the present invention.

FIG. 10 is a configuration diagram showing an intermittent ozone supply device according to Embodiment 6 of the present invention.

FIG. 11 is a configuration diagram illustrating an intermittent ozone supply device according to a seventh embodiment of the present invention.

FIG. 12 is an operation time chart of an intermittent ozone supply device according to Embodiment 7 of the present invention.

FIG. 13 is a configuration diagram illustrating an intermittent ozone supply device according to an eighth embodiment of the present invention.

FIG. 14 is an operation time chart of an intermittent ozone supply device according to Embodiment 8 of the present invention.

FIG. 15 is a configuration diagram showing a conventional intermittent ozone supply device.

FIG. 16 is an operation time chart of a conventional intermittent ozone supply device.

[Description of Signs] 1 ozone generator, 2 ozone adsorption / desorption tower, 6 hot brine tank, 7 cooling device, 8 ejector, 9 pump,
10a, 10b common piping, 11 cooling water tank, 1
2a, 12b, 12c, 12d Two-way valve, 13a, 13
b three-way valve, 14a, 14b ozone concentration meter, 15 differential comparator, 16 temperature detector, 17 controller, 18
Power control unit, 20a, 20b Cooling water piping.

Claims (9)

[Claims] 1. An ozone generator for generating ozonized oxygen from a raw material enzyme, an ozone adsorption / desorption tower for adsorbing ozone by receiving the supply of ozonized oxygen, and cooling the ozone adsorption / desorption tower when adsorbing the ozone An intermittent ozone supply device comprising: a cooling unit that performs heating, a heating unit that heats the ozone adsorption / desorption tower at the time of desorption of the ozone, and an ejector that depressurizes the ozone adsorption / desorption tower and adsorbs ozone to the water to be treated. And an intermittent ozone supply device provided with a common pipe through which cooling water and heating water supplied from the cooling means and the heating means to the ozone adsorption / desorption tower flow. 2. The intermittent ozone supply device according to claim 1, wherein a pump for circulating cooling water and heated water is provided in the common pipe. 3. The intermittent ozone supply device according to claim 1, wherein a cooling water tank is provided on the discharge side of the cooling means. 4. The cooling device according to claim 1, wherein a two-way valve is provided on an inlet side and an outlet side of the cooling means, and a two-way valve is provided on each of an inlet side and an outlet side of the heating means. 3. The intermittent ozone supply device according to any one of 3. 5. A one-way valve according to claim 1, further comprising a three-way valve having a common side connected to the common pipe side between the cooling means and the heating means and the common pipe. The intermittent ozone supply device according to the paragraph. 6. An ozone concentration meter is provided on each of an inlet side and an outlet side of an ozone adsorption / desorption tower, and a differential comparator for differentially comparing output signals of the ozone concentration meter is provided. The intermittent ozone supply device according to any one of claims 1 to 5. 7. The intermittent ozone supply device according to claim 1, wherein said cooling means controlling temperature detector is provided on the discharge side of said cooling means. 8. The intermittent ozone according to claim 1, wherein a power control device composed of a semiconductor element is provided between the heater and the power supply in the heating means. Feeding device. 9. A cooling water pipe is provided between the cooling means and the ozone generator.
The intermittent ozone supply device according to any one of the above.