JPH02207828A - Method and device for collecting component in gas by dissolution - Google Patents

Abstract

PURPOSE:To efficiently treat a large amt. of processing gas by forming a negative pressure with a jet to suck, agitate and mix the processing gas, dissolving the component in the gas in a collecting liq. and increasing the pressure of the jet to enhance the solubility. CONSTITUTION:The water 2 in a storage tank 3 is pressurized by a booster pump 5, supplied to an injection nozzle 8 and injected into a negative pressure forming pipe 9 as a jet. When the jet is expanded throughout the inside of the pipe 9, a negative pressure is formed in the vicinity of the nozzle 8, hence the atmosphere 10 is sucked from a processing gas suction port 11, mixed into the jet and agitated, and the oxygen in the atmosphere 10 is dissolved in the water jet and separated from the atmosphere 10. At this time, since a back pressure due to the water head difference H of a pressurizing means 7 acts on the jet for the pipe 9, hence the jet pressure is increased, and the solubility of oxygen in the jet is improved.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention can be used, for example, to dissolve oxygen in water in aquariums or fish farms,
The present invention relates to a method and apparatus for dissolving and capturing components in a gas, in which harmful gases in the gas are dissolved in a capturing liquid and captured.

<Prior art> For example, in the case of separating and removing harmful gases from the air, conventional techniques have been to store a trapping liquid in which the harmful gases dissolve in a vertically cylindrical container, and to process the gas from the bottom of the container. 2. Description of the Related Art Generally known are methods and apparatuses in which a harmful gas is injected into a trapping liquid and allowed to rise in the form of bubbles, while harmful gases are dissolved in the trapping liquid and separated and removed.

<Problems to be Solved by the Invention> According to the above method and device for dissolving and capturing components in a gas, when the bubbles rising in the capturing liquid are large, the processing gas containing harmful gases is absorbed into the capturing liquid. There is a problem in that the process gas passes through the capture liquid without making sufficient contact with the process gas, resulting in not only poor efficiency, but also the possibility that harmful gases may remain in the process gas and be released to the outside.

Therefore, in order to sufficiently dissolve and remove the harmful gases in the processing gas, it is conceivable to increase the height of the cylindrical container (by increasing the contact time between the processing gas and the capture liquid). However, in this case, there is a problem in that the height of the device becomes quite high.

Furthermore, in order to process a large amount of processing gas, it is necessary to provide a large diameter container for storing a large amount of capturing liquid, which causes the problem that the overall size of the apparatus increases.

The present invention was proposed in view of the above problems, and aims to provide a method and device for melting and trapping components in a gas, which can efficiently process a large amount of processing gas even though it is a small device. It is something.

Means for Solving the Problems> In order to achieve the above object, the method for dissolving and capturing components in a gas according to the present invention includes pressurizing the liquid in a storage tank and supplying it to an injection nozzle, and injecting a jet stream from the injection nozzle. A negative pressure is created in the negative pressure forming tube, and this negative pressure is used to suck the processing gas into the jet flow inside the negative pressure forming tube and mix it with stirring, dissolving the components in the processing gas into the capture liquid. The device for dissolving and trapping components in a gas is characterized in that the pressure of the jet stream in the tube for forming negative pressure is increased using a pressurizing means to increase the rate of dissolution of gaseous components into the trapping liquid. A pressure pump that pressurizes the capture liquid in the storage tank and supplies it to the injection nozzle, and a negative pressure that forms the processing gas suction port from the injection nozzle to the pressurized capture liquid. Negative pressure forming means formed to form negative pressure in the negative pressure forming pipe by injecting it into the forming pipe, and pressurizing means for applying back pressure to the jet stream in the negative pressure forming pipe are provided. It is characterized by:

<Operation> When the capturing liquid stored in the storage tank is pressurized by the pressure pump and supplied to the injection nozzle, it is injected from the injection nozzle into the negative pressure forming pipe as a jet stream.

When this jet stream spreads into the cup inside the negative pressure forming tube, it acts as a continuous piston that acts toward the open end of the negative pressure forming tube, and it reaches the vicinity of the injection nozzle of the negative pressure forming tube. negative pressure is created.

When the processing gas is drawn into the negative pressure forming tube from the processing gas suction port by the negative pressure created in this way, the processing gas is finely crushed and mixed into the jet flow inside the negative pressure forming tube, and is stirred. Therefore, all of the components in the processing gas that are dissolved in the trapping liquid are dissolved in the trapping liquid.

Then, the capturing liquid in which the components in the processing gas are dissolved in the negative pressure forming tube is discharged from the outlet of the negative pressure forming tube into the storage tank.

Here, back pressure is applied by the pressurizing means to the jet stream in the negative pressure forming pipe, increasing the pressure of the jet stream and improving the rate of dissolution of the gas component into the trapping liquid.

<Example> Hereinafter, a method and apparatus for dissolving and trapping components in a gas according to the present invention will be explained based on the drawings.

[Example 1] As shown in FIG. 1, an apparatus 1 for dissolving and capturing components in gas according to this embodiment dissolves, for example, oxygen (component) in the atmosphere (processing gas) into water (liquid for capturing) 2. A vertically long storage tank 3 that stores water 2 and has an open upper end, a pressure pump 5 that takes out the water 2 in the storage tank 3 from the water intake port 4 and pressurizes it, and a pressure pump 5. The device includes a negative pressure forming means 6 that injects pressurized water to form a negative pressure, and a pressurizing means 7 that applies back pressure to the negative pressure forming means 6.

The negative pressure forming means 6 has an injection nozzle 8 for injecting water 2 supplied from the pressure pump 5 facing one end of the negative pressure forming pipe 9, so that the jet stream injected from the injection nozzle 8 can cause a negative pressure. When the pressure is expanded inside the forming tube 9, a negative pressure is formed near the injection nozzle 8 of the negative pressure forming tube 9.

When a negative pressure is formed in the negative pressure forming tube 9 by the negative pressure forming means 6, a processing gas suction port 11 that sucks the surrounding atmosphere 10 into the negative pressure forming tube 9 with this negative pressure is connected to the injection nozzle 8. A flow control valve 12 is provided at the tip of the negative pressure forming pipe treatment gas suction port 11 .

Further, the pressurizing means 7 opens the discharge port 13 of the negative pressure forming pipe 9 into the water near the bottom 3a of the storage tank 3.
It is formed by providing a water head difference H between the water surface 2a stored inside and the discharge port 13.

Further, a partition wall 14 is provided upright between the discharge port 13 and the water intake port 4.

As a means for providing the water head difference tI for forming the pressure means 7, as shown in the imaginary diagram, a negative pressure forming pipe 9 is passed through the side wall 3b of the storage tank 3, and its discharge port 13 is connected to the storage tank 3.
It can also be formed with an opening in the vicinity of the bottom 3a.

The operation of the dissolution trapping device 1 constructed as described above will now be described.

First, when the pressure pump 5 is operated, the water 2 stored in the storage tank 3 is pressurized by the pressure pump 5 and supplied to the injection nozzle 8 from the water intake port 4 .

The high-pressure water supplied to the injection nozzle 8 is injected from the injection nozzle 8 into the negative pressure forming pipe 9 as a jet stream.

When the injected jet stream spreads to the inside of the negative pressure forming tube 9, this expanded portion moves the inside of the negative pressure forming tube 9 to the discharge port 13.
It acts like a continuous piston (represented by the mesh line P in the figure) that acts toward the side end, and negative pressure is formed in the vicinity of the injection nozzle 8 of the negative pressure forming pipe 9.

With the negative pressure created in this way, the atmosphere 10 is sucked into the negative pressure forming tube 9 from the processing gas suction port 11, mixed into the jet stream, and stirred, so that all the oxygen in the atmosphere 10 is removed from the jet stream. It is dissolved in water and separated from the atmosphere 10.

Then, the jet flow containing dissolved oxygen is discharged from the discharge port 13 of the negative pressure forming pipe 9 toward the bottom of the storage tank 3.

At this time, the jet stream in the negative pressure forming pipe 9 is pressurized by the pressurizing means 7
Since back pressure acts due to the head difference H of

C Example 2] As shown in FIG. 2, the device for dissolving and trapping components in gas according to this example has a storage tank 3 formed of a cylindrical sealable container, and a top plate 3c portion of the storage tank 3. A pressure regulating valve 15 is provided in the first negative pressure forming pipe 9a, in which a negative pressure forming means 6 is provided with an injection nozzle 8, and a second negative pressure forming pipe 9a is provided with a discharge port 13a of the first negative pressure forming pipe 9a. A forming pipe 9b is provided, and the discharge port 13b of the second negative pressure forming pipe 9b is connected to the water 2 in the storage tank 3.
In this embodiment, the pressurizing means 7 is formed by the water head difference 1 between the water surface 2a in the storage tank 3 and the discharge port 13b and the pressure regulating valve 15. .

In this embodiment, the water 2 in the storage tank 3 is sucked into the second negative pressure forming pipe 9b by the negative pressure generated in the second negative pressure forming pipe 9b, and is sucked by the first negative pressure forming pipe 9a. The structure is configured so that more of the atmospheric air 1O is brought into contact with a larger amount of water 2, and the other functions are substantially the same as in the first embodiment.

Moreover, what is shown in FIG. 3 shows a modification of the first negative pressure forming pipe 9a according to this embodiment, in which the first negative pressure forming pipe 9a is shortened and the A nozzle-shaped tapered guide plate 17 is attached to the discharge 13a portion of the first negative pressure forming pipe 9a, and the second negative pressure forming pipe 9
The atmosphere 10 is sucked in from the flow rate control valve 18 together with the water 2 in the storage tank 3 by the negative pressure generated in the tank.

Although not shown in the drawings, when the reservoir Pa3 is formed in a sealable container as in the second embodiment, the pressure inside the reservoir tank 3 is gradually increased by the atmospheric air 10 sucked through the negative pressure forming pipe 9. rises, the pressurizing means 7 can also be formed by opening the discharge port 13 of the negative pressure forming pipe 9 above the water surface 2a in the storage tank 3.

Further, in each of the above embodiments, oxygen in the atmosphere is dissolved in the water stored in the storage tank, but the present invention is not limited to this. It goes without saying that the liquid stored in the storage tank can also be changed in various ways according to the components of the gas to be dissolved and separated. .

<Effects of the Invention> As explained above, the method and device for dissolving and capturing components in a gas according to the present invention form a negative pressure with a jet stream injected into a tube for forming a negative pressure, and use the formed negative pressure to generate a negative pressure. The suctioned processing gas is mixed into the jet stream and stirred, so the components in the processing gas are mixed into the jet stream in the negative pressure forming tube in a finely divided state and stirred, making sure that all of the components are absorbed into the capture liquid. The capture efficiency is greatly improved.

This makes it possible to reliably capture components in the processing gas that dissolve in the capture liquid.

Moreover, since the capture liquid is circulated to capture the components in the processing gas, the capture liquid can be used without waste, and the amount of liquid required is small, making the entire device compact. It also has the advantage of being able to

In addition, there is an advantage that the pressurizing means applies back pressure to the jet stream in the tube for forming negative pressure, increasing the pressure of the jet stream, thereby further improving the rate of dissolution of the gas component into the trapping liquid.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 shows embodiment 1.
FIG. 2 is a longitudinal side view schematically showing the device for dissolving and trapping components in gas according to the second embodiment; FIG. 3 is a longitudinal side view schematically showing the device for dissolving and trapping components in gas according to the second embodiment; FIG. FIG. 3 is a longitudinal sectional side view of a main part showing an example. ■... Device for dissolving and capturing components in gas, 2... Liquid for capture, 3... Storage tank, 5... Pressurizing pump, 7... Pressurizing means, 8... Injection nozzle, 9 (9a/9b) ・
...Negative pressure formation tube, 10...Processing gas, 11...
Processing gas suction port.

Claims (2)

[Claims] (1) The capture liquid in the storage tank is pressurized and supplied to the injection nozzle, a jet stream is injected from the injection nozzle to form negative pressure in the negative pressure forming pipe, and this negative pressure is used to release the processing gas into a negative pressure. The components in the processing gas are dissolved in the capture liquid by suction into the jet stream in the pressure forming tube, and the pressure of the jet stream in the negative pressure forming tube is increased by the pressurizing means, causing the capture liquid to dissolve. 1. A method for dissolving and trapping components in a gas, characterized in that the dissolution rate of gas components in the gas is increased. (2) a storage tank that stores a capturing liquid; a pressurizing pump that pressurizes the capturing liquid in the storage tank and supplies it to the injection nozzle;
a negative pressure forming means formed to inject a pressurized capture liquid from an injection nozzle to a negative pressure forming pipe in which a processing gas suction port is formed to form a negative pressure in the negative pressure forming pipe; 1. An apparatus for dissolving and trapping components in a gas, characterized in that the device is configured by providing a pressurizing means for applying back pressure to a jet stream in a tube for forming a negative pressure.