JPS6351919A - Gas adsorption separating device - Google Patents

Abstract

PURPOSE:To separate gas efficiently by driving container containing selective adsorbent, inserting selective adsorbent alternatively into a high-pressure vent channel and a low pressure channel and allowing the mixed gas to flow into each channel. CONSTITUTION:A rotating frame 10 constituting a drive means 8 rotates at a low speed, while a container 4 filled with selective adsorbent 1 such as zeolite or the like is inserted into a high-pressure vent channel of a high-pressure vent tube 5, and N2 in high-pressure air is adsorbed to a selective adsorbent 1 to prepare air with O2 of a high-density. On the other hand, selective adsorbent 1 which has adsorbed N2 is inserted into a low-pressure vent channel of a low- pressure vent tube 6 by rotation, and N2 is desorbed to regenerate selective adsorbent 1. Thus, air with high density of O2 is prepared continuously.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a gas adsorption separation device, particularly a gas adsorption separation device suitable for increasing the concentration of a specific gas component in a mixed gas using a selective adsorbent. be.

[Conventional technology]

Also in hospitals, research institutes, and general residential buildings.

Attempts have been made to provide an oxygen-enriched air environment to the entire building in order to improve the living environment of workers and residents in the building from a health perspective.

For this purpose, a method has been proposed in which a gas adsorption separation device is attached to the air conditioning equipment of the building in order to increase the oxygen concentration in the air fed into the building.
This method is disclosed in Japanese Patent Application Laid-open No. 304 and Japanese Patent Application Laid-open No. 135106/1983.

In each of the methods disclosed in these documents, a mixed gas is passed through a fixed cylinder filled with a selective adsorbent, and valves are provided before and after the fixed cylinder, and by operating these valves, the gas mixture is pressurized by °C, Each step of adsorption, pressure equalization separation, depressurization and regeneration is carried out. Therefore, a large number of valves are arranged before and after the fixed cylinder, and it is necessary to control the valves condylarly, resulting in a large-scale device.

In addition, Japanese Patent Application Laid-Open No. 58-30322 discloses that two pistons with different strokes are used to pressurize and depressurize a gas mixture passing through a fixed cylinder. On the other hand, a method of increasing the concentration of a predetermined gas component has been disclosed.

This method has a structure with many mechanical direction changing elements,
The entire device becomes mechanically complex.

[Problem that the invention seeks to solve]

JP-A-58-151304 and JP-A-58-135
The method disclosed in Publication No. 106 has the disadvantage that it uses a large number of control valves, resulting in a large-scale device, increasing equipment costs and maintenance costs, and is not suitable for use in a relatively small scale. There is. Furthermore, the method disclosed in Japanese Patent Application Laid-Open No. 58-30322 has the disadvantage that it has a complicated structure with many two mechanical direction changing elements.

This invention was made in consideration of the current state of gas adsorption separation devices of this type as described above, and its purpose is to provide a gas adsorption separation device that has a relatively simple configuration and is applicable to small-scale areas. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, the gas adsorption separation device of the present invention includes a storage container containing a selective adsorbent, a mixed gas passing through the selective adsorption agent contained in the storage container,
In a gas adsorption separation device that increases the concentration of a specific gas component in the gas mixture.

a high-pressure ventilation passage through which a high-pressure mixed gas flows; a storage container in which a selective adsorbent is accommodated; and a driving means for driving the storage containers so that the storage containers are inserted alternately.

[Effect]

In the gas adsorption separation device of the present invention, storage containers containing one selective adsorbent are inserted alternately into a high-pressure ventilation path through which a high-pressure mixed gas is flowed and a low-pressure ventilation path through which a low-pressure mixed gas is flowed by a driving means. Ru. For this purpose, the specific gas component in the high-pressure mixed gas is adsorbed by the selective adsorbent, and the mixed gas in which the fractional concentration of other specific gases in the high-pressure mixed gas is increased is not supplied to a predetermined supply area. .

Next, the selective adsorbent on which the specific gas component has been adsorbed is inserted by the driving means into the low-pressure ventilation path through which the low-pressure mixed gas flows, and the adsorbent is regenerated.

In this way, a simple configuration with fewer control valves is possible.

The process is automatically repeated in succession.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the gas adsorption separation apparatus of this invention will be explained in detail based on the embodiment using the drawings.

FIG. 1 is a vertical cross-sectional view showing the configuration of an embodiment of the present invention, FIG. 2 is a view taken along arrows 1-1 in FIG. 1, and FIG.
This is a view from the direction of the arrow, showing a high-pressure ventilation passage 2 through which a high-pressure mixed gas flows, a low-pressure ventilation passage 3 through which a low-pressure mixed gas flows, a storage container 4 in which a selective adsorbent is accommodated, and a selective adsorption agent through high-pressure ventilation. The gas adsorption separation device of the present invention is constituted by a driving means 8 for driving the storage container 4 so as to be inserted alternately into the air passage and the low-pressure ventilation passage.

A specific configuration of the present invention will be explained based on the manufacturing process of an embodiment.

In this embodiment, a rotating frame 10 is used as the driving means, and the rotating frame 10 is formed so as to be rotatable about the rotation axis 7 and has a substantially disk-shaped outer shape. The rotary frame body 10 has a plurality of storage containers 4 that penetrate through the plate surface and accommodate the selective adsorbent 1.
It is formed radially with respect to the rotating shaft 7. In the embodiment, the cross section of each storage container 4 is as follows.

It is formed into a trapezoid shape with rounded corners.

A lid 11 is formed in which the high-pressure ventilation pipe 5 and the low-pressure ventilation pipe 6 are integrally formed to protrude at right angles to the plate surface, and this lid 11 clamps the one-rotation frame 10 around the rotating shaft 7. It will be arranged as follows. In this state, the two lid bodies 11 fixedly disposed
The rotating frame body 10 is mounted so as to be rotatable about the rotating shaft 7.

The lid body 11IC has two pieces each symmetrically about the rotation axis 7:
A cover 12 shaped to cover the opening of the storage container 4 is formed at a position where the high pressure ventilation pipe 5 and the low pressure ventilation pipe 6 are arranged.

A high-pressure generator (not shown) is connected to the inlet of the high-pressure ventilation pipe 5, and is set to allow high-pressure ventilation, for example, high-pressure air of 1.2 kV/crnG, to flow in, which is increased in pressure by the high-pressure generator. The outlet of the high pressure ventilation pipe 5 is located at a predetermined supply location 1.
For example, it is connected to the input side of a building's air conditioner. At the inlet of the low-pressure ventilation pipe 60, for example, 0.7 kV/cm of an air conditioner.
G's low pressure exhaust pipe is connected.

A transmission mechanism connected to the rotation shaft of a drive motor (not shown) is connected to the rotation shaft 7 of the rotation frame 100.

The rotating frame 10 is set to be rotatable at a low rotational speed of 1 to 2 revolutions per minute.

The operation of the gas adsorption separation apparatus of the present invention configured as described above will be explained.

Each storage container 4 of the rotating frame 10 is filled with a predetermined amount of selective adsorbent such as zeolite.

It rotates at a low rotation speed of about 1 to 2 revolutions per minute.

High pressure air of 1.2k)/ωG is supplied to the inlet of the high pressure ventilation pipe 5.

Also, at the entrance of the low pressure vent pipe 6, there is a pressure of Q, 7 kP/an”
Vent the low pressure exhaust of Q.

The rotating frame 0 constituting the driving means rotates at a low speed, and as a result of this rotation, the storage container 4 is inserted at a low speed into the high-pressure ventilation path of the high-pressure ventilation pipe 5. Adsorbent 1
When high pressure air comes into contact with the
is selectively adsorbed, and air with a high o1 concentration is obtained at the outlet of the high-pressure ventilation pipe 5. Such oxygen-enriched air is supplied into the building from an air conditioner, and the building's employees or residents are provided with an environment that is excellent in terms of health.

The selective adsorbent l adsorbing N is located outside the high-pressure ventilation path as the storage container 4 moves, and faces the low-pressure ventilation pipe 6 as the frame 10 rotates once. At this position, the selective adsorbent 1 in the storage container 4 is inserted into the low-pressure ventilation path of the low-pressure ventilation pipe 6, and the selective adsorbent 1ON is discharged, that is, the selective adsorbent 1 is regenerated.

As shown in Figure 4, as the pressure increases, the selective adsorbent 1
The adsorption amount of N is O! By bringing high-pressure air into contact with the selective adsorbent 1, a large amount of N1 can be adsorbed and the O1 concentration of the released air can be significantly increased.

Furthermore, since the amount of N adsorbed decreases almost linearly when the air pressure is lowered, the selective adsorbent 1 can be recovered by releasing N2.

In this way, the configuration is simple, the operation is easy, and a mixed gas with an increased oxygen concentration in the air, for example, can be efficiently obtained.

FIG. 5 shows the structure of another example of the storage container 9, in which the storage container 9 is formed into a cylindrical shape with both ends open. This storage container 9 is used by being fitted into a storage hole formed in, for example, a rotating frame.

In the embodiment, a case was explained in which a rotary frame body 10 was used as the driving means.1 For example, a storage container 9 as shown in FIG.
It is also possible to use a driving means that makes a linear reciprocating motion and is inserted condyle into the high-pressure air passage and the low-pressure air passage.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the structure is simple and strong, and it is driven by simple operation, absorbs a specific gas component from a mixed gas with high efficiency, and absorbs a high concentration of other specific gas components. It is possible to provide a gas adsorption separation device that can efficiently obtain a mixed gas even with small-scale equipment.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing the configuration of an embodiment of the present invention;
The figure is a 1-1 arrow view in Figure 1, Figure 3 is a ■-■ arrow view in Figure 1, Figure 4 is a diagram showing the relationship between pressure and adsorption amount for nitrogen and oxygen, and Figure 5 is a perspective view V showing another shape of the storage container. 1... Selective adsorbent, 2... High pressure ventilation path, 3... Low pressure ventilation path, 4... Storage container, 5... - High pressure ventilation pipe, 6... Low pressure ventilation pipe, 7... Rotating shaft, 8... Drive means, 10... Rotating frame, 11... ...Lid body, 12...Cover. Figure 1 Figure 3

Claims (1)

[Claims] A gas adsorption separation device in which a selective adsorbent is accommodated in a storage container, and a mixed gas is passed through the selective adsorbent accommodated in the storage container to increase the concentration of a specific gas component in the mixed gas. a high-pressure air passage through which a gas is flowed, a low-pressure air passage through which a low-pressure mixed gas is flowed, a storage container in which a selective adsorbent is stored, and the selective adsorbent is alternately distributed between the high-pressure air passage and the low-pressure air passage. A gas adsorption/separation device comprising a driving means for driving the storage container so as to insert the storage container.