JP2001002405A - Ozone gas generating device and dissolving device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozone gas dissolving device for generating high concentration ozone water by integrating the ozone gas dissolving device with an ozone gas generating device and circulating water in a dissolving vessel. SOLUTION: The ozone gas generating device 1 is submerged in the dissolving vessel 13 and ejectors 17, 22 are mounted respectively to a gas feed pipe 11 of the ozone gas generating device and a water flowing pipe 14 for water to be treated to be interposed, another end of a water suction pipe connected to the ejector 22 of the water flowing pipe 14 for water to be treated is opened in the vicinity of the tip part of the gas feed pipe 11 opened to the dissolving vessel 13 and another end of the water suction pipe connected to the ejector 17 of the gas feed pipe 11 for the ozone gas is opened in the vicinity of the tip end part of the water flowing pipe 14 for the released water to be treated. The high concentration ozone water is produced by adding ozone gas while circulating the water to be treated and the ozone water in the dissolving vessel 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for generating ozone gas and an apparatus for dissolving ozone gas using the apparatus, and more particularly to the removal, decolorization and deodorization of harmful substances contained in clean water, sewage and industrial waste water. Ozone water used, or
The present invention relates to an ozone gas generator used for sterilization, decolorization, and deodorization of foods and the like, and a dissolution apparatus using the same.

[0002]

2. Description of the Related Art Conventionally, an ozone gas producing apparatus and an ozone gas dissolving apparatus are known. And Japanese Patent Application Laid-Open No. 8-59205.
As described in the publication, the ozone gas producing device and the ozone gas dissolving device are independent devices, and a system is formed by combining auxiliary devices such as a compressor and a blower according to a request of the generator. Was.

[0003]

However, a system incorporating the above-mentioned conventional ozone gas generating device and dissolving device tends to have a large system volume and require a considerable installation space. It was difficult to integrate the system into other machines.
Further, in addition to the power for the generator, the power of the auxiliary equipment is required, so that it is not very economical. The present invention integrates a compact ozone gas generator and an ozone gas dissolving device using the ozone gas generator,
An object of the present invention is to provide an ozone gas dissolving apparatus that generates high-concentration ozone water by circulating water in a dissolving tank.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is to provide an electrode support cylinder inside a closed casing, and to dispose an electrode band on an outer peripheral portion of the electrode support cylinder. With an ozone generation chamber between the cylinders,
An air chamber is provided inside the electrode support cylinder, and a plurality of air discharge ports are opened in the electrode support cylinder to provide a compact ozone gas generator. Specifically, the above-mentioned electrode band is wound around a band-like or linear electrode whose outer peripheral surface is insulated with a dielectric material, and an air supply port is provided at one end of the electrode support tube. Opening a plurality of air discharge ports on the other end side and connecting an air supply pipe for ozone gas to the casing on the air supply port side to extend the contact time between the air transferred to the ozone generation chamber and the electrode strip. It is. Then, the inner peripheral surface of the electrode support cylinder is cooled by air supplied to the air chamber to perform heat exchange with the electrode band, and at the same time, the inner peripheral surface of the casing is cooled by a plurality of radiating plates fixed to the outer peripheral portion of the casing. Is cooled to lower the temperature of the ozone generating chamber, thereby preventing the electrode band from heating up, thereby preventing a decrease in the amount of ozone generated.

[0005] A flow pipe and a treated water pipe of the water to be treated are connected to the dissolving tank, and the treated water pipe connected to the dissolving tank is opened at an inflow port at a submerged water level of the ozone gas generator. An ejector is interposed to release the end of the air supply pipe into the dissolving tank, and a water absorbing pipe is connected to the venturi of the ejector to open the other end of the water absorbing pipe into water, thereby generating an ozone gas generator, a dissolving apparatus, and the like. This is an integrated dissolution tank. Then, a water pipe for the water to be treated is extended inside the dissolution tank, an ejector is interposed in the water pipe, a water pipe is connected to the venturi of the ejector, and the other end of the water pipe is opened in water. The tip of the ozone gas air supply pipe is opened near the opened water absorption pipe, and the tip of the treated water flow pipe is opened near the ejector water absorption pipe arranged in the ozone gas air supply pipe. ,
By circulating the water in the dissolution tank, high-concentration ozone water is generated. Further, the treatment water pipe connected to the dissolving tank is opened to the submerged water level of the ozone gas generator to cool the heat sink provided on the outer periphery of the casing with water, and one end of the ozone gas air supply pipe is submerged at one end, and the other. A gas-liquid separator having an open end on the water surface is connected to separate the discharged ozone gas inside the dissolution tank, and the discharged ozone gas is discharged from a discharge pipe.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In an ozone gas generator according to the present invention, when air is supplied from an air supply pipe to an air chamber inside an electrode support cylinder, the air flows along the inner peripheral surface of the electrode support cylinder, Is transferred to the ozone generation chamber from the air discharge port at the end of the electrode support, and the air comes into contact with the electrode band disposed on the outer peripheral portion of the electrode support cylinder. When a high voltage is supplied to this electrode band, a DC voltage is applied to the left and right electrodes, and a high-voltage electric field is generated between the electrodes, thereby causing streamer discharge. Then, ions and electrons move in the discharge space, collide with air molecules and cause fragmentation and ionization of oxygen molecules, which cause a chemical reaction to generate ozone, which is extracted from the air supply pipe on the air supply pipe side. Is done. Also, the heated electrode band cools the inner peripheral surface of the electrode support cylinder,
Heat exchange is performed by cooling the inner peripheral surface of the casing by the heat radiating plate, thereby preventing a decrease in the amount of ozone generated due to the increase in heat.

In an ozone gas dissolving apparatus in which an ozone gas generating apparatus is incorporated in a dissolving tank, the ozone gas generated by the ozone gas generating apparatus is transferred to an air supply pipe, and when the ozone gas passes through an ejector, the ozone gas flows from the water absorbing pipe to the dissolving tank. The stored water is sucked into the venturi of the ejector and sprayed on the ozone gas. Then, the sprayed water to be treated becomes fine particles, and is mixed with ozone gas to generate ozone water, which is discharged into the dissolution tank from the tip of the air supply pipe. On the other hand, in the water pipe of the water to be treated, which is fed into the dissolving tank, the water stored in the dissolving tank is sucked from the suction pipe to the ejector of the water pipe, and at the same time, a part of the ozone water discharged into the water from the air pipe is discharged. It is sucked and mixed with the water to be treated. And
The mixed water is discharged from the end of the water pipe near the opening end of the water intake pipe connected to the ejector of the air supply pipe, and again,
It is sucked into the air supply pipe from the suction pipe and mixed with ozone gas,
By repeating this circulating operation, high-concentration ozone water is obtained. The ozone water is taken out from the treated water outlet pipe and transferred to a reaction tower or the like. Further, the exhausted ozone gas is extracted from the exhaust pipe and transferred to an exhausted ozone treatment tower or the like.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the ozone gas generator 1 of the present invention will be described in detail with reference to FIG. 1. Reference numeral 2 denotes a cylindrical casing, which forms a closed container. This casing 2
An electrode support tube 3 is disposed inside the longitudinal direction of the electrode support. A linear electrode 4 coated with a dielectric insulating material is wound around the outer periphery of the electrode support tube 3 in an endless manner in a circumferential direction. Band 5 is formed, and 6K is applied from power cable 6 to electrode band 5.
When a voltage of V or more is supplied, the casing 2 and the electrode support cylinder 3
Ozone is generated in the ozone generation chamber 7 provided between the two. An air chamber 8 is provided inside the electrode support tube 3, and an air supply port 9 is provided at one end of the electrode support tube 3, and two air discharge ports are provided at the other end side as shown in FIG. The outlets 10 and 10 are opened, and the air supplied from the supply port 9 is transferred along the inner peripheral surface of the electrode support tube 3, cools the electrode support tube 3, and heats up the electrode band by applying a voltage. 5 and heat exchange. Air outlet 10 is 2-3
Although the diameter, the number, and the position are determined so that the air does not drift in the air chamber 8, the number is not limited to the embodiment of the present invention.

An air supply pipe 11 for ozone gas is connected to the casing 2 on the side of the air supply port 9, so that the air supplied from the air chamber 8 to the ozone generation chamber 7 contacts the electrode strip 5. Ozone gas is generated during the movement from one end to the other end, and is sent out from the air supply pipe 11, so that the contact time between the air and the electrode strip 5 is extended. A plurality of radiating plates 12 are fixed to the outer peripheral surface of the casing 2 along the circumferential direction, and the temperature rise of the air in the ozone generating chamber 7 due to the heating of the electrode strip 5 is determined by heat exchange. The heat is radiated at 12 and the inner peripheral surface of the casing 2 is cooled to prevent a decrease in the amount of ozone generated due to an increase in the heat of the electrode band 7. In addition,
The casing 2 and the electrode support tube 3 only need to be cylindrical, and the cross-sectional shape is not limited to a circle.

Next, the ozone gas dissolving device will be described in detail with reference to FIGS. 3 and 4. Reference numeral 13 denotes a dissolving tank 13 in which the ozone gas generating device 1 is incorporated. 14 and a treatment water pipe 15 are connected, an inflow port 16 of the treatment water pipe 15 is provided at a water level at which the ozone gas generator 1 is submerged, and heat radiating plates 12 provided on the outer peripheral surface of the casing 2 are exposed above the liquid surface. I try not to. An ejector 17 is interposed in an intermediate portion of the air supply pipe 11 connected to the casing 2 of the ozone gas generator 1, and a water absorption pipe 19 having one end opened in water is provided with a venturi of the ejector 17 as shown in FIG. 18. Then, when the ozone gas sent from the ozone gas generator 1 passes through the venturi 18 of the ejector 17, a negative pressure is generated in the water absorption pipe 19, the water stored in the dissolving tank 13 is sucked, and the ozone gas and the water in the dissolving tank 13 are mixed. Then, ozone water is generated. A gas-liquid separator 20, one end of which is submerged and the other end of which is opened above the water surface, is connected to the distal end of the ozone gas supply pipe 11, which discharges ozone water into water and brings ozone gas-containing air above the liquid surface. It is made to discharge. The discharged ozone gas separated by the gas-liquid separator 20 is supplied to a discharge pipe 21 connected to the water surface of the dissolving tank 13.
It is made to pull out from.

The to-be-treated water passage pipe 14 is provided in the middle of the dissolution tank 13 with an ejector 22 interposed therebetween, and extends into the dissolving tank 13 as shown in FIG. A tube 24 is connected to the venturi 23 of the ejector 22. In the vicinity of the water absorption pipe 24, an end of an air supply pipe 11 for the ozone gas is opened, and the ozone water released from the air supply pipe 11 is sucked into the water pipe 14 so as to be mixed with the water to be treated by the ejector 22. . Further, the distal end of the water pipe 14 of the water to be treated is opened in the vicinity of the open distal end of the water absorption pipe 19 of the ejector 22 disposed in the air supply pipe 11, and the water and the ozone of the water discharged from the water pipe 14 are discharged. The mixed water is supplied to the water intake pipe 1 of the ejector 17 provided in the air supply pipe 11.
From 9, the water is sucked together with the stored water in the dissolution tank 13. That is, the circulation of the ozone water is kept good, and the water in the dissolution tank 13 is mixed to concentrate the ozone water in the dissolution tank 13. Then, after being retained in the dissolving tank 13 for several minutes to 20 minutes to be treated, ozone water is taken out from the treatment water pipe 15 of the dissolving tank 13. The dissolution tank 13 is not limited to the purpose of dissolving ozone gas, but can be used as a reaction tank. Reference numeral 25 denotes a control device that applies a voltage to the electrode strip 5 through the power cable 6.

[0012]

The ozone gas generator according to the present invention has the following features.
Since the electrode support cylinder having the electrode band disposed on the outer peripheral portion is provided inside the cylindrical casing, the ozone gas generator is compact. The ozone gas dissolving device of the present invention can be integrated with an ozone gas generating device, and high-concentration ozone water can be obtained by circulating water in a dissolving tank. In other words, in the conventional ozone gas generator, the capacity of the system is large and it is difficult to incorporate it into other machines, and the power of the auxiliary equipment is also required. An ozone generation chamber and an air chamber are provided inside the electrode support cylinder between the cylindrical casing and the electrode support cylinder, air is supplied from one end of the air chamber, and ozone gas is extracted from the other end of the ozone generation chamber. Therefore, the contact time between the air transferred to the ozone generation chamber and the electrode band is prolonged, and the air supplied to the air chamber cools the inner peripheral surface of the electrode support tube to cause heat exchange with the electrode band. Since the inner peripheral surface of the casing is cooled by a plurality of heat radiating plates fixed to the outer peripheral portion of the casing to lower the temperature of the ozone generation chamber, it is possible to prevent the electrode band from being heated while being a compact device. Prevent decrease in ozone generation Is shall.

Since the ozone gas generator is compact, the ozone gas generator can be immersed in the water to be treated in the dissolving tank, and the generator, the dissolving device and the dissolving tank can be integrated. . Then, an ejector was interposed in each of the air supply pipe of the ozone gas generator and the water pipe of the water to be treated, and connected to the ejector of the water pipe of the water to be treated near the tip of the air pipe released into the dissolving tank. The other end of the water absorption pipe was opened, and the other end of the water absorption pipe connected to the ejector of the ozone gas air supply pipe was opened near the distal end of the released treated water flow pipe. The ozone gas is further added while circulating in the dissolving tank, so that high-concentration ozone water can be generated. In addition, since the ejector is also used for circulating the mixed water of the water to be treated and the ozone water in the dissolving tank, auxiliary equipment such as a pump for circulation is not required, and the power consumption is reduced as compared with the conventional apparatus. Things.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal side view of an ozone gas generator according to the present invention.

FIG. 2 is a side view showing a portion of an air discharge port of the electrode support cylinder according to the present invention.

FIG. 3 is a partially longitudinal side view of the ozone gas dissolving apparatus according to the present invention.

FIG. 4 is a partial cross-sectional side view of the ozone gas dissolving apparatus according to the present invention.

FIG. 5 is a vertical sectional side view of an ejector provided in an ozone gas supply pipe according to the present invention.

FIG. 6 is a vertical sectional side view of an ejector provided in a water pipe for treated water according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ozone gas generator 2 Casing 3 Electrode support cylinder 4 Electrode 5 Electrode band 7 Ozone generation chamber 8 Air chamber 9 Supply port 10 Air discharge port 11 Air supply pipe 12 Heat sink 13 Melting tank 14 Water pipe 15 Treatment water pipe 16 Inlet 17 Ejector 18 Venturi 19 water absorption pipe 20 gas-liquid separator 21 discharge pipe 22 ejector 23 venturi 24 water absorption pipe

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D050 AA01 AA12 AA13 AB03 AB04 AB06 BB02 BD03 BD04 4G035 AA01 AE13 4G042 CA01 CC02 CC10 CC12 CE01 CE04

Claims (8)

[Claims] An electrode support tube (3) is provided inside a cylindrical casing (2), and an electrode band (5) is provided on an outer peripheral portion of the electrode support tube (3). An ozone generation chamber (7) is provided between the electrode support cylinders (3), and an air chamber (8) is provided inside the electrode support cylinder (3), and a plurality of air discharge ports (10) are provided in the electrode support cylinder (3). …) Was established. 2. The ozone gas generator according to claim 1, wherein said electrode strip comprises a strip-shaped or linear electrode whose outer peripheral surface is insulated with a dielectric. 3. An air supply port (9) is provided at one end of the electrode support tube (3), and a plurality of air discharge ports (10...) Are opened at the other end of the electrode support tube (3). The ozone gas generator according to claim 1 or 2, wherein an ozone gas supply pipe (11) is connected to the casing (2) on the side of the air supply port (9). 4. The ozone gas generator according to claim 1, wherein a plurality of heat radiating plates (12) are fixed to an outer peripheral portion of said casing (2). 5. A flow pipe (1) for the water to be treated is passed through a dissolving tank (13).
4) and the treated water pipe (15) are connected, the above-mentioned ozone gas generator (1) is submerged in the dissolving tank (13), and the ejector (17) is connected to the air supply pipe (11) of the ozone gas generator (1). The distal end of the air supply pipe (11) is released into the dissolution tank (13) by interposing, and a water absorption pipe (19) is connected to a venturi (18) of an ejector (17) to connect the water absorption pipe (19). 5. The ozone gas dissolving apparatus according to claim 1, wherein the end is opened in water. 6. A water pipe (14) for the water to be treated extends inside the dissolution tank (13), and an ejector (22) is interposed in the water pipe (14).
The ozone gas dissolving apparatus according to claim 5, wherein a water absorption pipe (24) is connected to the venturi (23), and the other end of the water absorption pipe (24) is opened in water. 7. An ozone gas supply pipe (11) is provided with an open end near the water suction pipe (24) of an ejector (22) disposed in the water flow pipe (14). 7. An end of a water pipe (14) for treated water is opened in the vicinity of a water suction pipe (19) of an ejector (17) disposed in an air supply pipe (11) of the present invention. Ozone gas dissolving equipment. 8. A treatment water pipe (15) connected to the dissolving tank (13) has an inlet (16) opened at a submerged water level of the ozone gas generator (1), and a discharge pipe (21) for exhaust ozone gas.
And a gas-liquid separator (20) having one end submerged at the tip of the ozone gas supply pipe (11) and the other end opened above the water surface. Item 7. An ozone gas dissolving apparatus according to item 6.