JPH0994449A - Gas liquid contact reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact gas-liquid catalytic reaction device. SOLUTION: Tubular gas permeation films 3 are arranged in the inside of a cylindrical body 2 and either one of the space 6 between the cylindrical body 2 and the gas permeation film 3 or the space in the inside of the gas permeation film 3 is made to a liquid flow path for allowing the liquid to pass through and the other space is made to a gas flow path for allowing the gas to pass through. Thus, since the gas in the gas flow path is allowed to flow in the liquid of the liquid flow path through the gas permeation film over the whole length of the gas permeation film, the contact ratio of the liquid to the gas can be enhanced. Then the height of the device and the dead space can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid contact reaction device used for efficiently bringing a liquid and a gas into contact with each other when performing ozone treatment of purified water, wastewater, etc. or disinfection of food.

[0002]

2. Description of the Related Art Conventionally, ozone treatment of purified water, waste water, etc.
A treatment method in which a gas for treating the liquid to be treated is brought into contact with the liquid to be treated is performed, and, for example, a gas-liquid contact reaction tower is used as an apparatus for efficiently bringing the liquid to be treated into contact with the gas.

The gas-liquid contact reaction tower is constructed so as to inject a gas into the liquid to be treated introduced into the tower, but rather than injecting a large amount of gas at a time, It is considered that the dispensing efficiency in three stages or more increases the gas absorption efficiency and gas utilization efficiency, and the injected gas is effectively used. Therefore, while injecting the gas in multiple stages, the injection rate increases in later stages. Is reduced.

[0004]

However, in the gas-liquid contact reaction tower, it is generally necessary to make the residence time of the gas in the tower as long as possible in order to increase the contact ratio between the liquid to be treated and the gas. Since the height is about 4 m, there is a problem that the height of the device becomes high. Further, in a gas-liquid contact reaction tower designed with a large amount of treatment, the occurrence of dead space is unavoidable.

The present invention solves the above-mentioned problems. The gas absorption efficiency is high, and therefore the water depth of the liquid to be treated and the height of the apparatus can be reduced, the amount of gas blown out can be easily controlled, and no dead space is generated. It is an object to provide a compact gas-liquid contact reaction device.

[0006]

In order to solve the above problems, a gas-liquid contact reaction apparatus according to claim 1 of the present invention is a gas-liquid contact reaction apparatus for efficiently contacting a liquid and a gas, A gas permeable membrane that forms a fluid passage is placed inside the cylinder,
Of the space between the cylindrical body and the gas permeable membrane and the space inside the gas permeable membrane, one of the spaces serves as a liquid flow passage through which the liquid passes, and the other space serves as a gas flow passage through which the gas passes. The gas in the gas channel is configured to be injected into the liquid in the liquid channel through the gas permeable film.

The gas-liquid contact reaction apparatus according to claim 2 is
A plurality of gas permeable membranes forming a fluid passage are arranged inside the cylinder, and the cylinder and one end and the other end of the gas permeable membrane are connected to each other by a header, and the gas permeable membrane of each gas is inside the header. A fluid chamber that communicates with the inner space is formed to form a module, and the header has a first nozzle that communicates with the space between the cylinder and each gas permeable membrane and has the other end that opens outside the header. And a second nozzle having one end communicating with the fluid chamber and the other end opening outside the header.

The gas-liquid contact reactor according to claim 3 is
A plurality of cylinders, each of which has a gas-permeable membrane forming a fluid passage arranged in a double-tube shape, are arranged inside, and one end and the other end of the cylinder and the gas-permeable membrane are respectively connected by a header, and the inside of the header And a second fluid chamber communicating with a space inside each gas permeable membrane and a second fluid chamber communicating with a space inside each gas permeable membrane are formed into a module. The header has one end communicating with the first fluid chamber and the other end having a first nozzle opening outside the header and one end having a second nozzle.
A second nozzle communicating with the fluid chamber and having the other end opened outside the header is provided.

The gas-liquid contact reactor according to claim 4 is
A plurality of modules are connected so that the liquid flow paths are in series or in parallel. In the above description, the gas permeable membrane refers to a porous membrane that allows only gas to pass but does not allow liquid to pass, and for example, a porous glass membrane produced by semi-melting glass powder.

According to the above-mentioned structure of the first aspect, such a gas permeable membrane is arranged inside the tubular body, and a space between the tubular body and the gas permeable membrane and a space inside the gas permeable membrane are provided. Since the liquid flow path and the gas flow path are formed, the gas passing through the gas flow path passes through the gas permeable film over the entire length of the gas permeable film,
A cross flow flows into the liquid passing through the liquid flow path. Therefore, the contact rate between the liquid and the gas increases.

According to the second aspect of the invention, the module has two flow paths, namely, the first nozzle of the header on one end side and the fluid chamber, the space between the tubular body and each gas permeable membrane, and the other end. A flow path consisting of the fluid chamber of the header on the side of the section and the first nozzle, a second nozzle of the header on the side of one end, a space inside each gas permeable membrane, and a second nozzle of the header on the side of the other end. And are formed. Therefore, the liquid or the gas is introduced from one of the first nozzles on one end side or the other end side and allowed to flow out from the other first nozzle, and the second nozzle on either the one end side or the other end side is introduced. When gas or liquid is introduced from the nozzle and flown out from the other second nozzle, one flow passage becomes a liquid flow passage and the other flow passage becomes a gas flow passage, and each gas permeable membrane arranged in the cylinder body Injection of gas into the liquid occurs.

According to the third aspect of the invention, the module has two flow paths, that is, the first nozzle and the first fluid chamber of the header on the one end side, and between the cylinder and the gas permeable membrane in each cylinder. Space, a flow path formed by the first fluid chamber and the first nozzle of the header on the other end side, and the second nozzle and the second nozzle of the header on the one end side.
A fluid chamber, a space inside each gas permeable membrane, a second fluid chamber of the header on the other end side, and a flow path including a second nozzle are formed. Then, one of these channels serves as a liquid channel, and the other channel serves as a gas channel, so that gas is injected into the liquid for each gas permeable membrane arranged in the cylinder.

According to the structure of claim 4, when a plurality of modules are connected so that the liquid flow paths are in series, the gas is injected into the liquid in multiple stages, and the liquid flow paths are formed. When they are connected in parallel, the throughput of liquid increases.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, a gas-liquid contact module 1 is for efficiently contacting a liquid to be treated with a gas such as ozone for treating the liquid to be treated. One permeable membrane 3 or a plurality of permeable membranes 3 are arranged at appropriate intervals as shown, and one end and the other end of the cylinder 2 and the gas permeable membrane 3 are connected by headers 4 and 5. There is.

The header 4 has one end communicating with the space 6 between the tubular body 2 and each gas permeable membrane 3, and the other end having a nozzle 7 opening outside the header 4 and an inside of each gas permeable membrane 3. It has a fluid chamber 9 communicating with the space 8 and a nozzle 10 having one end communicating with the inside of the fluid chamber 9 and the other end opening outside the header 4.

Similarly, the header 5 has one end communicating with the space 6 between the tubular body 2 and each gas permeable membrane 3, and the other end having a nozzle 11 opening outside the header 4 and each gas permeable membrane 3. Has a fluid chamber 12 communicating with the inner space 8 and a nozzle 13 having one end communicating with the fluid chamber 12 and the other end opening outside the header 4.

Nozzle 7 of header 4 and nozzle 1 of header 5
1 is arranged in a diagonal position so that the distance between them is as large as possible. According to the above configuration, in the gas-liquid contact module 1, the nozzle 7 of the header 4, the space 6 between the tubular body 2 and the gas permeable membrane 3, the first flow path including the nozzle 11 of the header 5, and the header 4 are provided. The nozzle 10 and the fluid chamber 9, the space 8 inside each gas permeable membrane 3, the fluid chamber 12 of the header 5 and the second flow path including the nozzle 13 are formed.

Therefore, the liquid to be treated 14 is introduced from the nozzle 7 of the header 4 and the gas 15 is introduced from the nozzle 13 of the header 5.
Is introduced, the liquid to be treated 14 flows out from the nozzle 11 of the header 5 through the first flow path, and the gas 15 flows out of the nozzle 10 of the header 4 through the second flow path.

At this time, if the pressure of the gas 15 to be introduced is adjusted to an appropriate pressure, the gas 15 passing through the second flow path will pass through the gas permeable film 3 through the gas permeable film 3 because the gas permeable film 3 is porous. It flows into the liquid to be treated 14 passing through one flow path.
That is, the gas 15 and the liquid to be treated 14 come into contact with each other over the entire length of the gas permeable membrane 3.

Such contact can be regarded as equivalent to performing continuous diffuser-tube-type continuous multi-stage injection by arranging innumerable diffuser pipes continuously. The effect is the same as that formed in. Therefore, the contact ratio between the liquid to be treated 14 and the gas 15 becomes high, the reaction between the two rapidly progresses, and the liquid to be treated 14 is favorably treated by the gas 15.

In the above embodiment, the first
Although the liquid to be treated 14 was introduced into the flow passage and the gas 15 was introduced into the second flow passage, conversely, the liquid to be treated 14 was introduced into the second flow passage and the gas 15 was introduced into the first flow passage. It may be introduced. Further, the flow of the liquid to be treated 14 in the first flow path and the flow of the gas 15 in the second flow path are countercurrent,
Although the liquid to be treated 14 and the gas 15 are introduced, they may be introduced so that they flow in parallel.

Further, in the above-mentioned embodiment, the liquid to be treated 14 and the gas 15 for treating the liquid to be treated are introduced, but in order to absorb the water-soluble component in the gas into water. It is also conceivable to introduce water and the gas to be treated into.

Further, the gas-liquid contact module can be constructed as follows. As shown in FIG. 4, the gas-liquid contact module 16 has a tubular body 17 in which a tubular gas permeable membrane 18 is arranged in a double tubular shape. The parts are connected by a header (not shown).

The header 19 on the one end side has a first fluid chamber 21 that communicates a space 20 between each cylinder 17 and the gas permeable membrane 18, and a space 22 inside each gas permeable membrane 18. And a second fluid chamber 23 that communicates with the first fluid chamber 21, one end communicates with the first fluid chamber 21, the other end communicates with the first nozzle 24 that opens outside the header 19, and one end communicates with the second fluid chamber 23. The other end has a second nozzle 25 that opens outside the header 19. The header on the other end side is also similarly configured.

According to the above-described structure, the gas-liquid contact module 16 includes the first nozzle 24 of the header 19 on one end side, the first fluid chamber 21, the cylinder 17 of each cylinder 17 and the gas permeable membrane 18. The space 20 between them, the first flow path formed by the first fluid chamber of the header on the other end side and the first nozzle, the second nozzle 25 and the second fluid chamber 23 of the header 19 on the one end side, each gas permeable membrane. A space 22 inside 18, a second fluid chamber of the header on the other end side, and a second flow path including a second nozzle are formed.

Also with this configuration, by making one of the first flow path and the second flow path a liquid to be processed and the other a gas flow path, the contact ratio between the liquid to be processed and the gas can be increased. Can be increased.

Next, an embodiment in which a plurality of gas-liquid contact modules as described above are arranged will be described with reference to FIGS. In each of the embodiments, the gas-liquid contact module 26, which has been described with reference to FIGS.
27 and 28 are arranged in three stages, and in each of the gas-liquid contact modules 26, 27 and 28, the first flow path is the liquid to be treated flow path and the second flow path is the gas flow path.

In the embodiment shown in FIG. 5, the gas-liquid contacting modules 26, 27 and 28 are arranged such that the first liquid flow paths (that is, the liquid flow paths to be processed) are in series so that the liquid flow conduits 29 and 3 to be processed are connected.
They are connected by 0, 31, 32, and are also connected by gas conduits 33, 34, 35, 36, 37, 38, 39 so that the second flow paths (that is, gas flow paths) are parallel to each other. The gas conduits 33, 34, and 35 are adjusted so that the gas supply amount decreases in this order, so that a relatively large amount of gas is supplied to the liquid to be treated on the upstream side and a relatively small amount of gas is supplied on the downstream side. It is supposed to be done.

With the above structure, the liquid to be treated is sequentially introduced into the module 26, the module 27 and the module 28, and in each of the modules 26, 27 and 28, the gas to be individually supplied from the gas conduits 33, 34 and 35 is multistage. As a result, the contact rate with the gas becomes higher, and good treatment is achieved. At this time, since a larger amount of gas is supplied to the upstream side, the gas utilization efficiency is high. Each module 26, 2
The gas flowing out from 7, 28 is the gas conduit 36, 37, 3
8 and 39 lead to a gas treatment system.

In the embodiment shown in FIG. 6, in the gas-liquid contact modules 26, 27, 28, the first flow path (that is, the liquid flow path to be treated) and the second flow path (that is, the gas flow path) are connected in series. To be treated liquid conduits 40, 41, 42, 4
Gas conduits 44, 45, 4 while being connected by 3
6, 47, and the liquid to be treated and the gas flow in parallel with each other, as shown in the figure.

Also in this configuration, the liquid to be treated is sequentially introduced into the module 28, the module 27, and the module 26, and as a result of making multiple contact with the gas in each of the modules 28, 27, and 26, the contact rate with the gas is higher. It is processed well. At this time, the gas sequentially flows into the module 28, the module 27, and the module 26 to decrease the concentration. Therefore, as with the case where the gas whose concentration is adjusted in the embodiment shown in FIG. Is supplied to. The gas flowing out of the module 26 is guided to the gas processing system by the gas conduit 44.

In the embodiment shown in FIG. 6, the liquid to be treated and the gas may flow countercurrently over the modules 26, 27, 28. In the embodiment shown in FIG. 5 or 6, the first flow path may be a gas flow path and the second flow path may be a liquid to be treated flow path.

Further, in the embodiment shown in FIG. 5 or 6, each module 26, 27, 28 is
The first flow paths, that is, the liquid paths to be treated may be connected in parallel, and such a configuration increases the amount of liquid to be treated.

[0034]

As described above, according to the present invention, the gas permeable membrane forming the fluid passage is arranged inside the tubular body, and the space between the tubular body and the gas permeable membrane and the space inside the gas permeable membrane. Since one of them is the liquid flow path and the other is the gas flow path, the liquid and the gas come into contact with each other through the gas permeable film over the entire length of the gas permeable film, and the contact ratio between the liquid and the gas is increased.
Therefore, unlike the conventional gas-liquid contact reaction tower, it is not necessary to deepen the water depth to lengthen the residence time of gas in the tower, and it is possible to realize a compact gas-liquid contact reaction apparatus by reducing the apparatus height and dead space. .

Further, according to the present invention, a plurality of gas permeable membranes forming fluid passages are arranged inside the cylindrical body, and one end portion and the other end portion thereof communicate with the inner space of each gas permeable membrane. One of the flow passages including the space between the tubular body and each gas permeable membrane and the flow passage including the space inside each gas permeable membrane is a liquid flow passage. Since the other is the gas flow path, the liquid and the gas come into contact with each gas permeable membrane, and the contact rate is improved. Such a device is easy to operate.

Further, according to the present invention, a plurality of cylinders each having a gas-permeable membrane forming a fluid passage arranged in a double tubular shape are arranged inside, and one end and the other end thereof are connected to the cylinders of the respective cylinders. A header having a first fluid chamber communicating with a space between the gas permeable membrane and a second fluid chamber communicating with a space inside each gas permeable membrane is arranged to form a module. With this configuration also, one of the flow path including the space between the cylinder and each gas permeable membrane in each cylinder and the flow path including the space inside each gas permeable membrane is a liquid flow path, the other is a liquid flow path. By using the gas flow path, the liquid and the gas come into contact with each gas permeable membrane, and the contact rate is improved. The operation of the device is also easy.

Further, according to the present invention, since a plurality of modules are connected, when the liquid flow paths are connected in series, the contact between the liquid and the gas is made multi-stage to further improve the contact rate. When the liquid channels are connected in parallel, the liquid throughput can be increased.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas-liquid contact reaction device according to an embodiment of the present invention.

2 is a cross-sectional view taken along the line AA of the gas-liquid contact reaction device shown in FIG.

3 is a BB cross-sectional view of the gas-liquid contact reaction device shown in FIG.

FIG. 4 is a transverse cross-sectional view of a main part showing a gas-liquid contact reaction device according to another embodiment of the present invention.

FIG. 5 is an explanatory view showing an embodiment in which a plurality of gas-liquid contact reaction devices of the present invention are connected.

FIG. 6 is an explanatory view showing another embodiment in which a plurality of gas-liquid contact reaction devices of the present invention are connected.

[Explanation of symbols]

 1 Gas-liquid contact module 2 Cylindrical body 3 Gas permeable membrane 4,5 Header 6 Space 8 Space 7,11 First nozzle 9,12 Fluid chamber 10, 13 Second nozzle 16 Gas-liquid contact module 17 Cylindrical body 18 Gas permeable membrane 19 Header 20 Space 21 First fluid chamber 22 Space 23 Second fluid chamber 24 First nozzle 25 Second nozzle 26, 27, 28 Gas-liquid contact module 29, 30, 31, 32 Liquid to be treated conduit 33, 34, 35, 36 , 37, 38, 39 Gas conduit 40, 41, 42, 43 Treated liquid conduit 44, 45, 46, 47 Gas conduit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Ishida 1-47 Shikazu East, Naniwa-ku, Osaka City, Osaka Prefecture Kubota Co., Ltd. (72) Hideki Iwabe Toichi Shikazu, Naniwa-ku, Osaka City, Osaka Prefecture 2-47, Kubota Co., Ltd. (72) Hirokazu Minami, Hirokazu Minami 1-47, Shizutsu, Naniwa-ku, Osaka-shi, Osaka Prefecture 2-47, Kubota Co., Ltd. (72) Kodai Yoshizaki, Naniwa-ku, Osaka-shi, Osaka 1-47 Tsuto 1-chome Kubota Co., Ltd.

Claims (4)

[Claims] 1. A gas-liquid contact reaction device for efficiently contacting a liquid and a gas, wherein a gas permeable membrane forming a fluid passage is arranged inside a tubular body, and a space between the tubular body and the gas permeable membrane. And a space inside the gas permeable membrane, one of the spaces is a liquid flow passage through which the liquid passes, and the other space is a gas flow passage through which the gas passes. A gas-liquid contact reaction device, which is configured to be injected into a liquid in a liquid flow path through. 2. A plurality of gas permeable membranes forming a fluid passage are arranged inside the tubular body, and the tubular body and one end and the other end of the gas permeable membrane are respectively connected by a header,
A fluid chamber that communicates the space inside each gas permeable membrane is formed inside the header to form a module.The header has one end communicating with the space between the cylinder and each gas permeable membrane and the other end. The gas-liquid contact reaction device according to claim 1, further comprising a first nozzle that opens outside the header, and a second nozzle that has one end communicating with the fluid chamber and the other end opening outside the header. . 3. A plurality of cylinders each having a gas permeable membrane forming a fluid passage arranged in a double tubular shape are arranged inside, and one end and the other end of the cylinder and the gas permeable membrane are respectively connected by a header. At the same time, inside the header, a first fluid chamber that communicates the space between the cylinder and the gas permeable membrane in each cylinder and a second fluid chamber that communicates the space inside each gas permeable membrane are formed. A module, the header has a first nozzle having one end communicating with the first fluid chamber and the other end opening outside the header, and one header communicating with the second fluid chamber at the other end opening outside the header. 2. A gas-liquid contact reaction device according to claim 1, further comprising a second nozzle. 4. The gas-liquid contact reaction apparatus according to claim 2, wherein a plurality of modules are connected so that the liquid flow paths are in series or in parallel.