KR100702198B1 - System for pressurization of oxidizing gas - Google Patents

Abstract

The present invention relates to an oxidizing gas pressurizing system for supplying a protective cooling water into the oxidizing gas pressurizing device to serve as a protective film against strong oxidizing power, and to cool the heat generated in the pressurizing device.

The oxidizing gas pressurizing system of the present invention is an oxidizing gas pressurizing system for pressurizing and supplying an oxidizing gas such as ozone or chlorine, wherein the oxidizing gas storage device and the oxidizing gas storage device are pressurized to a high pressure. And a cooling water supply device for supplying a protective cooling water serving as a protective film for the oxidizing gas supplied into the oxidizing gas pressurizing device to be discharged afterwards.

Oxidizing gas, ozone, protective film, cooling water, thermal decomposition

Description

Oxidizing Gas Pressurization System {SYSTEM FOR PRESSURIZATION OF OXIDIZING GAS}

1 is an overall configuration diagram showing an oxidizing gas pressurization system according to the present invention.

FIG. 2 is an enlarged view of the oxidizing gas storage device of FIG. 1. FIG.

3 is an enlarged view of the oxidizing gas pressurizing device of FIG. 1.

4 is an enlarged view of the cooling water supply device of FIG. 1;

<Description of the symbols for the main parts of the drawings>

1: oxidizing gas storage device

    11: oxidizing gas storage tank

    12: pressure sensor

    13: safety valve

2: oxidizing gas pressurizing device

    21: main body

         211: inlet, 212: outlet

    22: piston

         221: piston ring

    23: piston actuator

3: cooling water supply device

    31: coolant storage tank

    32: piping

    33: electric valve

4: gas pipe

    41: check valve

The present invention relates to a system for pressurizing and supplying an oxidizing gas, and more particularly, by supplying a protective cooling water into an oxidizing gas pressurizing device, so that the protective cooling water serves as a protective film against strong oxidizing power, and heat generated inside the pressurizing device. An oxidizing gas pressurization system for cooling.

To date, a variety of methods have been used for water treatment such as advanced water treatment, sewage treatment, industrial wastewater, manure wastewater, and leachate treatment. Although a single oxidant such as potassium permanganate is used for the purpose of completely oxidizing with CO ₂ and water, there is a problem in that the water treatment is limited and expensive.

Advanced Oxidation Process (AOP), which has been studied a lot recently among these chemical oxidation methods, is a technique for decomposing organic substances present in water by generating an intermediate product (-OH) radical.

Advanced oxidation technology is a complex oxidation method that increases oxidative power by combining ozone, hydrogen peroxide, photocatalyst, ultraviolet light, and the like.

Common to these complex oxidation methods is the method of relying on the strong oxidizing power of the hydroxide (-OH) radicals produced as intermediates rather than expecting the treatment effect from the directly injected oxidant, which is more economical and efficient than using each oxidant alone. The basic concept of this method is to maximize the production of hydroxyl (-OH) radicals.

Oxidizing gases such as ozone and chlorine, which are used in advanced oxidation techniques, are pressurized to a predetermined pressure, made to high concentrations, and supplied to obtain high oxidizing power.

As a method for pressurizing and supplying the oxidizing gas, there is a method using a pump. The method using the pump is a Teflon diaphragm method, and the pressurization flow rate is very high despite the high-speed stretching movement because the pressurization is dependent on the expansion and contraction of the Teflon. There is a limit that is small. In addition, mechanical wear is severe due to high speed movement and there is a problem that ozone is decomposed by heat in the process of pressurizing the high temperature occurs.

On the other hand, the injector method is used as a method of injecting oxidizing gas such as ozone or chlorine into water, and the gas injection by the injector method is a venturi type, which is used for kinetic energy generated by passing water at high speed through a narrow cross section of the venturi. It is a device designed to introduce the oxidizing gas by using the phenomenon that the pressure drop occurs in the venturi portion.

When pressurizing ozone by such an injector method, there is a disadvantage in that the ratio of gas and water decreases according to the pressurized pressure, and thus it is difficult to inject a sufficient amount of ozone gas. This large, pressurized high pressure of 3 atm or higher had a problem that was impossible.

An object of the present invention for solving the above technical problem is to supply a protective coolant to the inside of the oxidizing gas pressurizing device so that the protective coolant acts as a protective film for the piston ring on the inner surface of the oxidizing gas pressurizing device, oxidizing pressure pressurized at high pressure It is to provide an oxidizing gas pressurization system that can prevent the oxidation of the piston ring by the strong oxidizing power of the gas.

It is also an object of the present invention to provide an oxidizing gas pressurizing system that can cool the heat generated by the piston reciprocating motion inside the oxidizing gas pressurizing device using a protective cooling water to prevent thermal decomposition of ozone.

In the oxidizing gas pressurization system of the present invention for solving the above technical problem, in the oxidizing gas pressurization system for pressurizing and supplying an oxidizing gas such as ozone or chlorine, an oxidizing gas storage device and an oxidizing gas storage device are supplied. And an oxidizing gas pressurizing device which is discharged after being pressurized to a high pressure and discharged, and a cooling water supply device for supplying protection cooling water serving as a protective film for the oxidizing gas supplied into the oxidizing gas pressurizing device.

The oxidizing gas pressurizing device includes a main body having an inlet and an outlet of a gas, a piston for pressurizing a fluid through a reciprocating motion in the main body, a piston ring provided at a side of the piston, and a reciprocating of the piston. It can be made by including a piston driver to control the movement.

In this case, the piston ring may be made of an oxidation resistant material, for example, a fluorine resin material.

According to various embodiments of the present disclosure, the oxidizing gas storage device includes an oxidizing gas storage tank, a pressure sensor, a safety valve, and a gas decomposer (not shown), and the pressure inside the oxidizing gas storage tank through the pressure sensor. After checking and according to the result, it may be configured to control the pressure inside the oxidizing gas storage tank through the control of the flow rate of the flow inside the oxidizing gas pressurizing device and the opening and closing control of the safety valve.

In addition, according to another embodiment of the present invention, the oxidizing gas storage device is composed of an oxidizing gas storage tank, a pressure sensor, a safety valve and a gas cracker (not shown), the pressure inside the oxidizing gas storage tank through the pressure sensor After checking and according to the result, it can be configured to control the pressure inside the oxidizing gas storage tank through the gas supply control and the safety valve opening and closing control to the oxidizing gas storage tank.

The invention will become more apparent through the preferred embodiments described below with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through embodiments of the present invention.

1 is an overall configuration showing an oxidizing gas pressurizing system according to the present invention, the present invention relates to an oxidizing gas pressurizing system for pressurizing and supplying an oxidizing gas such as ozone or chlorine, the oxidizing gas storage device (1) and oxidative It comprises a gas pressurization device 2 and a cooling water supply device 3.

FIG. 2 is a block diagram illustrating the oxidizing gas storage device of FIG. 1 in detail. The oxidizing gas storage device 1 receives an oxidizing gas such as ozone or chlorine from a gas supply device (not shown) and pressurizes the oxidizing gas pressurizing device ( 2) is stored before pressurizing and conveying to control the pressurized amount and flow rate of the fluid.

Here, although not shown, the gas supply device (not shown) may correspond to an ozone generator when using ozone gas, and a device for reacting and supplying manganese dioxide and hydrochloric acid when using chlorine gas.

To this end, the oxidizing gas storage device 1 may be composed of an oxidizing gas storage tank 11, a pressure sensor 12, a safety valve 13, and a gas cracker (not shown).

Accordingly, the oxidizing gas storage device 1 may adjust the internal pressure by mechanically opening the safety valve 13 according to the detection result of the pressure sensor 12, according to an embodiment.

Alternatively, according to another embodiment, the transfer flow rate inside the oxidizing gas pressurizing device 2 is controlled according to the internal pressure of the oxidizing gas storage tank 11 detected through the pressure sensor 12, and the internal pressure is equal to or greater than the reference stable value. When the safety valve 13 can be opened to discharge the gas to the gas cracker (not shown).

That is, the pressure inside the oxidizing gas storage tank 11 is detected through the pressure sensor 12, and the detected signal is analyzed to convey the flow rate inside the oxidizing gas pressurizing device 2 when the detected pressure is higher than the reference pressure. If the pressure is lower than the reference pressure, the flow rate of the oxidizing gas pressurization device 2 is decreased.

In addition, when the internal pressure of the oxidizing gas storage tank 11 rises above the reference stable value, in order to protect the gas supply device (not shown), the safety valve 13 is opened to quickly discharge gas into a gas decomposer (not shown). ) To be decomposed and discharged, and the driving of the gas supply device (not shown) and the oxidizing gas pressurizing device 2 may be stopped.

In the embodiment of the present invention, the pressure of the oxidizing gas storage tank 11 is controlled by controlling the fluid transfer inside the oxidizing gas pressurizing device 2 according to the signal detection result by the pressure sensor, but another embodiment of the present invention According to the control of the internal pressure of the oxidizing gas storage tank 11 can be made by a separate manner.

For example, when the ozone gas is supplied to the oxidizing gas storage tank 11, the pressure of the oxidizing gas storage tank 11 is greater than or equal to the reference pressure without controlling the fluid flow rate of the oxidizing gas pressurizing device according to a signal of a separate pressure sensor. As a result, the flow rate of ozone gas generated by the ozone generator (not shown) naturally decreases, and the pressure inside the oxidizing gas storage tank 11 is stabilized constantly.

In another embodiment, when chlorine gas is used, when the pressure of the oxidizing gas storage tank 11 is equal to or higher than the reference pressure, a method of reducing the gas supply amount to stabilize the internal pressure may be used.

Meanwhile, as shown in FIG. 3, the oxidizing gas pressurizing device 2 receives the oxidizing gas from the oxidizing gas storage device 1, pressurizes it to high pressure, and discharges the same.

To this end, the oxidizing gas pressurizing device 2 includes an inlet 211 and an outlet 212 of the gas, a gas pipe 4 connected to the inlet 211 and the outlet 212, and an inner space formed therein. It includes a main body 21, a piston 22 for pressurizing the fluid through the reciprocating motion in the main body 21, and a piston driver 23 for controlling the reciprocating motion of the piston 22.

In addition, the piston 22 may be further provided with a piston ring 221 made of an oxidation resistant material such as, for example, a fluorine resin having resistance to oxidation. At this time, the piston ring 221 has been described as a fluorine-containing material, which is not limited thereto.

Here, the body 21 and the piston 22 is made of a material of STS (Stainless Steel) 304 ~ STS (Stainless Steel) 316 having resistance to the oxidizing power of the oxidizing gas, preferably STS 316L material and fluorine resin Corrosion can be prevented, and the material of the body 21 or the piston 22 is not limited thereto.

At this time, the piston driver 23 may be any of a variety of mechanical, hydraulic, pneumatic method for controlling the reciprocating motion of the piston 22.

As shown in FIG. 4, the cooling water supply device 3 supplies protective cooling water as a protective film for the oxidizing gas supplied into the oxidizing gas pressurizing device 2, and the cooling water storage tank 31 and the pipe 32 ) And the electric valve 33.

That is, the cooling water supply device 3 supplies the protection cooling water into the oxidizing gas pressurizing device 2, and the protection cooling water thus supplied is the piston ring 221 on the inner surface of the main body 21 of the oxidizing gas pressurizing device 2. Since it serves as a protective film for, the corrosion of the internal material of the body 21 by the oxidizing gas is prevented.

In addition, the supplied protective cooling water is to solve the problem that the ozone is decomposed by the heat when using ozone as the oxidizing gas as cooling the heat inside the body (21).

At this time, the electric valve 33 of the cooling water supply device 3 controls the transfer of the cooling water supplied to the oxidizing gas pressurizing device.

In addition, in the embodiment of the present invention, but described to supply the cooling water stored in the cooling water storage tank 31, according to another embodiment of the present invention pipes directly connected to the oxidizing gas pressurizing device 2 without passing through the cooling water storage tank (not shown) Through the control signal of the electric valve can be supplied directly to the cooling water.

On the other hand, the gas pipes 4 of the inlet and outlet of the oxidizing gas pressurizing device 2 are each further provided with a plurality of check valves 41, and the check valves 41 of the inlet and outlet are repeated opening and closing. Not only does it help transport ozone gas, but it also prevents backflow of ozone gas.

The pressurized gas supply method using the oxidizing gas pressurization system of the present invention will be briefly described as follows.

First, the oxidizing gas generated in the gas supply device (not shown) is supplied to the oxidizing gas storage tank 11.

At this time, according to the embodiments of the present invention to detect the pressure inside the oxidizing gas storage tank 11 through the pressure sensor 12, and to adjust the internal pressure according to the result.

For example, when the pressure detected by the pressure sensor 12 is higher than the reference pressure, the gas transfer amount is increased by adjusting the reciprocating speed and the moving distance of the piston 22 through the driving control of the piston driver 23.

On the contrary, when the detected pressure is lower than the reference pressure, the gas feed amount is reduced through the drive control of the piston driver 23.

That is, when the pressure inside the oxidizing gas storage tank 11 is high, the discharge of pressurized gas is increased to lower the pressure inside the oxidizing gas storage tank 11.

On the contrary, when the internal pressure of the oxidizing gas storage tank 11 is low, the discharge of pressurized gas is reduced to maintain the pressure inside the oxidizing gas storage tank 11 to be above a predetermined pressure.

In another embodiment, when the pressure detected through the pressure sensor 12 is higher than the reference pressure, the oxidizing gas storage tank 11 by reducing the flow rate supplied from the gas supply device (not shown) to the oxidizing gas storage tank 11. The internal pressure of the can also be stabilized.

In addition, when the pressure inside the oxidizing gas storage tank 11 is higher than the reference stable value, the safety valve 13 is opened to discharge the gas to a gas decomposer (not shown), so that the gas is decomposed.

On the other hand, when the piston 22 is lowered, the electric valve 33 is opened to supply a certain amount of protective coolant into the main body 21 so that the protective coolant is protected against the piston ring 221 on the inner surface of the main body 21. Play a role.

When a certain amount of oxidizing gas is supplied to the gas pipe 4 on the inlet part 211 side, the check valve 41 on the side of the inlet part 211 is opened so that the oxidative gas is introduced into the main body 21.

Subsequently, when the oxidizing gas flows into the main body 21, the piston 22 is raised.

Then, the check valve 41 of the inlet part 211 side is closed, and the check valve 41 of the discharge part 212 side is opened, and pressurized oxidizing gas is discharged | emitted as the piston 22 raises.

At this time, since the check valve 41 on the inlet portion 211 side is closed, the oxidizing gas does not flow back.

Through this series of processes, since the oxidized gas pressurized to a high pressure is continuously transferred, a large amount of oxidizing gas can be transferred.

In addition, the protective cooling water flowing through the main body inner surface of the oxidizing gas pressurizing device in accordance with the supply of the protective cooling water serves as a protective film for the piston ring, thereby preventing the corrosion of the main body by the oxidizing gas having a strong oxidizing force to pressurized to high pressure, oxidative The gas can be transported under high pressure.

In other words, it is possible to pressurize the ozone gas, which is difficult to pressurize at least 3 atmospheres, to a high pressure of 3 atmospheres or more.

In addition, when ozone is used, the protective cooling water cools the heat generated by the piston movement, thereby preventing the ozone from being decomposed by the heat.

As described above, the present invention supplies a protective coolant to the inside of the oxidizing gas pressurizing device so that the protective coolant serves as a protective film for the piston ring on the inner surface of the oxidizing gas pressurizing device, thereby providing a strong oxidation force of the oxidizing gas pressurized to a high pressure. By preventing the surface oxidation by the pressure, by supplying the oxidizing gas at a high pressure to improve the water treatment efficiency through the oxidation process.

In addition, the present invention by cooling the heat generated by the piston reciprocating motion inside the oxidizing gas pressurizing device using a protective cooling water to prevent the thermal decomposition of ozone, increase the oxidation efficiency to enable the reduction of ozone equipment, facility costs and maintenance costs There is an advantage to reduce the cost.

In addition, the present invention has the advantage of preventing the mechanical wear of the piston by making the cooling water to act as a buffer of the inner surface of the oxidizing gas pressurizing device.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (4)

In an oxidizing gas pressurization system for pressurizing and supplying an oxidizing gas such as ozone or chlorine, Oxidizing gas storage device 1; An oxidizing gas pressurizing device (2) which receives an oxidizing gas from the oxidizing gas storage device (1) and pressurizes it to high pressure and then discharges it; And a cooling water supply device (3) for supplying protective cooling water serving as a protective film for the oxidizing gas supplied into the oxidizing gas pressurizing device (2). The method of claim 1, The oxidizing gas pressurizing device (2); A main body 21 having an inlet 211 and an outlet 212 of gas, A piston 22 for pressurizing the fluid through the reciprocating motion in the main body 21; Piston ring 221 provided on the side of the piston 22, And a piston driver (23) for controlling the reciprocating motion of the piston (22). The method of claim 2, The piston ring 221 is an oxidizing gas pressurization system, characterized in that made of fluorine resin. The method of claim 1, The oxidizing gas storage device (1); It consists of an oxidizing gas storage tank 11, a pressure sensor 12, a safety valve 13 and a gas cracker (not shown), The internal pressure of the oxidizing gas storage tank 11 is checked through the pressure sensor 12, and according to the result, the oxidizing gas is controlled by controlling the flow rate of the oxidizing gas pressurizing device 2 and opening / closing control of the safety valve 13. Oxidizing gas pressurization system, characterized in that it is configured to control the pressure inside the storage tank (11).

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