KR101408024B1 - Gas Dehydration Apparatus using Micro and/or nano Bubble - Google Patents

Abstract

Disclosed is a gas degassing apparatus using a micro bubble containing a contactor for storing an absorbent at a bottom portion and a nozzle for immersing the absorbent stored in the contactor and discharging the wet gas as minute bubbles.

Description

[0001] The present invention relates to a gas dehydration apparatus using micro-bubbles,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas dewatering apparatus using microbubbles, and more particularly, to a gas dewatering apparatus using microbubbles for efficiently dewatering moisture of a wet gas.

Gas Hydrate is a solid material formed by combining natural gas such as methane (CH4) or carbon dioxide (CO2) with water molecules (2H2O) at low temperature and high pressure. It is a solid material that is composed of petroleum or natural gas reservoir and coal layer It is often found in adjacent areas or deep-sea sediments of low temperature and high pressure, especially on continental slopes. The natural gas extracted from the natural gas gas field is liquefied and transported through the process of removing carbon dioxide, sulfur and water contained in the gas. If the natural gas contains a large amount of water, a problem occurs that the gas hydrate is formed on the gas piping wall and the piping is clogged. In addition, the use of natural gas requires additional installation of the water removal equipment contained in the gas. In order to reduce the problem of pipe clogging due to the generation of gas hydrate and to reduce the requirement of separate water removal equipment in the application, the natural gas is subjected to moisture removal process before gas is liquefied and stored in the gas field. Gas hydrate is an environmentally friendly clean energy source with little carbon dioxide emission during combustion, and is considered as a substitute gas for depletion of oil and gas resources. Gas hydrates are also used for storing, transporting natural gas, and for storing carbon dioxide in the seabed, and are also being used for research that serves as a mechanism for gas separation.

1 is a view showing a conventional gas dewatering apparatus.

Referring to FIG. 1, a conventional gas dewatering apparatus includes a contactor 3, pumps 4a and 4b, and an absorbent regeneration section 7.

The contactor (3) receives the wet gas and contacts the dry absorbent (Dry Absorbent) to dry the wet gas. The contactor 3 removes moisture contained in the gas using an absorbent to generate a dry gas, and discharges the generated dry gas, that is, dehydrated dry gas.

The absorbent stored in the bottom of the contactor 3 is supplied to the absorbent regeneration section 7 by the pump 4a.

One end of the pump 4a is connected to the contactor 3 and the other end is connected to the absorbent regeneration section 7. [

When the absorbent regeneration section 7 dries the absorbent containing moisture and regenerates it as a usable dry absorbent in the contactor 3, the pump 4b causes the absorbent regeneration section 7 to regenerate the dried absorbent to the contactor 3) Provide to the top.

According to an embodiment of the present invention, there is provided a gas dewatering apparatus and method using fine bubbles capable of efficiently removing water vapor contained in a wet gas.

According to an embodiment of the present invention, a contactor for storing an absorbent at the bottom; And a nozzle immersed in the absorbent stored in the contactor to discharge the wet gas as fine bubbles.

The gas dewatering apparatus using the present micro bubbles includes: a piping for providing a path through which the wet gas moves; A droplet forming unit for making at least a part of water vapor contained in the wet gas flowing through the pipe into droplets; And a droplet separator for separating droplets formed in the droplet forming unit from the wet gas; And the nozzle may be configured to introduce the wet gas into which the liquid droplet is separated by the liquid separation unit, and to discharge the wet gas as fine bubbles.

The droplet forming unit forms a condensation nucleus by ionizing the wet gas, and a vapor is included in the condensation nucleus to form a droplet.

Wherein the droplet forming unit comprises: an ionization unit for ionizing at least a part of particles contained in the wet gas; And an electric field generating unit for generating an electric field in a piping region through which the wet gas ionized by the ionizing unit passes.

The gas dewatering apparatus using microbubbles includes a first pump for pumping an absorbent stored in the contactor to provide an absorbent regeneration section for drying the absorbent; And a second pump for supplying the absorbent regenerated by the absorbent regeneration unit to a pipe between the nozzle and the droplet separation unit.

The first pump may further be to provide the absorbent regenerated by the absorbent regeneration section to the contactor.

According to the embodiment of the present invention, the drying efficiency can be improved by introducing the dry gas into the form of minute bubbles and flowing into the contactor.

According to another embodiment of the present invention, drying efficiency can be improved by forming and removing liquid droplets arbitrarily before the wet gas is introduced into the contactor.

1 is a view showing a conventional gas dewatering apparatus,
2 is a view for explaining a gas dewatering apparatus using fine bubbles according to an embodiment of the present invention,
3 is a view for explaining a gas dewatering apparatus using microbubbles according to another embodiment of the present invention,
4 is a view for explaining the droplet forming unit of Fig. 3, and Fig.
5 to 7 are views for explaining a nozzle used in a large-capacity microbubble generator according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Further, in the drawings, the thickness of the components is exaggerated for an effective description of the technical content.

Where the terms first, second, etc. are used herein to describe components, these components should not be limited by such terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The expression that component A and component B are connected (or connected or fastened or coupled) to each other in the description and / or claims of the present application means that component A and component B are directly connected or that one or more of the other components Quot; is used in the meaning including to be connected by an intermediary.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons for explaining the present invention.

2 is a view for explaining a gas dewatering apparatus using micro-bubbles according to an embodiment of the present invention.

2, a gas dewatering apparatus using micro-bubbles according to an embodiment of the present invention includes a contactor 30, pumps 51, 53 and 55, a nozzle 60, and an absorbent regenerator 70, . ≪ / RTI >

According to the present embodiment, the wet gas flows into the contactor 30 through the pipe L, and then flows out through the nozzle 60 in the form of minute bubbles. Herein, the microbubbles mean micro bubbles and / or smaller bubbles.

The absorbent is introduced into the upper portion of the contactor 30, and the introduced absorbent is stored in the lower portion of the contactor 30. Here, the absorbent introduced into the upper portion of the contactor 30 is sprayed through a sprayer (not shown) and then stored in the lower portion of the contactor 30.

2, the nozzle 60 discharges the wet gas as fine bubbles in a state of being immersed in the absorbent stored in the lower portion of the contactor 30. As described above, the micro-bubbled wet gas has a wider contact area with the absorbent, so that the absorption efficiency of water vapor contained in the wet gas can be improved.

The water vapor not absorbed by the absorbent stored in the lower portion of the contactor 30 can be absorbed while being in contact with the absorbent sprayed from the upper portion of the contactor 30 when the water vapor rises to the upper portion of the contactor 30.

The pump 55 pumps the absorbent regenerated in the absorbent regeneration section 70 and supplies it to the piping L. Although not shown, the absorbent can be introduced into the pipe L by using an apparatus such as an injector.

After the absorbent flows into the pipe L, the absorbent and the wet gas are supplied to the contactor 30 in a mixed state, and the wet gas is brought into contact with the absorbent through the nozzle 60.

 On the other hand, the absorbent to which the contactor 30 is supplied from the absorbent regeneration section 70 is a dry absorbent in the dry state without water vapor, and the absorbent in this state is referred to as a 'dry absorbent' The absorbent in the state of absorbing water vapor will be referred to as a " wet absorbent ".

The dry absorbent regenerated by the absorbent regeneration unit 70 flows into the contactor 30 through the pipe by the pump 53 and is sprayed in the form of droplets through a sprayer (not shown) do.

The pump 51 pumps the absorbent stored in the bottom of the contactor 30 to the absorbent regenerator 70 when the amount of the absorbent stored in the bottom of the contactor 30 becomes a predetermined amount or more, to provide.

FIG. 3 is a view for explaining a gas dewatering apparatus using fine bubbles according to another embodiment of the present invention, and FIG. 4 is a view for explaining a droplet forming unit and a droplet separating unit of FIG.

3 and 4, a gas dewatering apparatus using a fine bubble according to another embodiment of the present invention will be described.

3 is compared with the embodiment shown in FIG. 2, the embodiment of FIG. 3 further includes a droplet forming unit 10 and a droplet separating unit 20, and a micro bubble generator 80 ).

Meanwhile, the contactor 30 and the absorbent regenerator 70 of FIG. 3 perform the same functions as those of the embodiment of FIG. 2, so that the description thereof is omitted here. The micro bubble generator 80 may be, for example, a micro bubble generator disclosed in Korean Laid-Open Publication No. 10-2012-0007929 (a micro bubble generator and a pipe using the micro bubble generator). For example, in the case of using the micro bubble generator shown in FIG. 4 of the Korean Laid Open Publication, a wet gas is introduced into a portion where air is introduced, and an absorbent is introduced into a portion where water is introduced, Can be used.

Referring to FIGS. 3 and 4, the gas dewatering apparatus using micro-bubbles according to an embodiment of the present invention may further include a droplet forming unit 10 and a droplet separating unit 20.

According to the present embodiment, the wet gas passes through the droplet forming unit 10 and the droplet separating unit 20 before being introduced into the microbubble generator 80.

The piping L provides a path through which the wet gas can move, and the droplet forming unit 10 and the droplet separating unit 20 are located inside or outside the piping L.

The droplet forming section 10 artificially forms droplets in the wet gas, and the droplet separating section 20 separates droplets formed in the wet gas.

In the present invention, the wet gas may be, for example, a gas hydrate.

As used herein, the term " particle " shall be understood to include particles, gas molecules (or atoms), and electrons contained in a wet gas. In addition, the term 'wet gas ionization' is used to mean ionization of particles contained in a wet gas.

The droplet forming unit 10 according to an embodiment of the present invention may include an ionization unit 11 and an electric field generating unit 13.

The ionization section 11 is located inside or outside of the pipe through which the wet gas moves, and can ionize the wet gas flowing through the pipe.

Specifically, the ionization unit 11 ionizes the particles contained in the wet gas by using soft X-rays into particles having positive polarity (hereinafter referred to as 'bipolar particles') and particles having negative polarity (hereinafter referred to as negative polarity particles) . The bipolar particles can be, for example, particles or gas molecules such as dust contained in a wet gas, and negative polar particles can be, for example, 'electrons' or 'particles having negative polarity by obtaining electrons'.

The bipolar particles and the negative polarity particles formed by the ionization portion 11 pass through the region where the electric field formed by the electric field generating portion 13 is formed.

The electric field generating portion 13 according to an embodiment of the present invention includes a cathode 13a and a cathode 13b, and a power source 13c. The cathode 13a and the anode 13b are located inside or outside the piping between the ionization portion 11 and the liquid separation portion 20. Preferably, the cathode 13a and the anode 13b are positioned opposite to each other.

The bipolar particles and the negative polar particles are kept in the ionized state without being adhered to each other by the electric field directed from the positive electrode 13b to the negative electrode 13a. As described above, the bipolar particle and the negative polar particle function as a condensation nucleus capable of forming a droplet, and water vapor in the wet gas attaches to the condensation nucleus to form a droplet (water droplet).

The electric field generated by the electric field generating section 13 is formed inside the pipe between the ionization section 11 and the liquid separation section 20. That is, the electric field generating section 13 enables the bipolar particles and the negative polar particles formed in the ionization section 11 to maintain their respective ionized states.

For this purpose, it is preferable that the ionization part 11 and the electric field generating part 13 are positioned adjacent to each other.

The droplet separator 20 can separate droplets formed in the wet gas.

The droplet separating unit 20 separates the droplet made in the droplet forming unit 10 from the wet gas and the wet gas separated by the droplet is then supplied to the contactor 30 in the form of fine bubbles through the micro bubble generator 80 .

As described above, by supplying the wet gas to the contactor 30 after generating and separating droplets arbitrarily or artificially in the wet gas, the amount of water vapor contained in the wet gas to be treated in the contactor 30 is reduced, Furthermore, the efficiency of the dewatering process can be improved by providing the wet gas to the contactor 30 by saturating the microbes.

Figs. 5 to 7 are views for explaining a nozzle (hereinafter referred to as a " nozzle ") used in the gas dewatering apparatus using the fine bubbles shown in Fig.

The nozzle 60 may include a guide portion 62, an impingement plate 64, and a cross-sectional area adjusting portion 66.

The guide part (62) flows the mixed water in which the wet gas and the absorbent are mixed and flows out toward the impingement plate (64).

The guide portion 62 includes an inlet end 61 for receiving the mixed water and an outlet end 63 for discharging the mixed water. 5 and 6, the internal structure of the guide portion 62 has a plurality of stepped portions from the inflow end 61 toward the outflow end 63, and the outflow end 63 The inner diameter of the guide portion 62 gradually becomes smaller.

An outflow hole 62 through which the mixed water flows is formed in the outflow end 62 and collides with the impact plate 62 after the mixed water flows out through the outflow hole 62.

The mixing plate 62 is separated from the outlet 62 by a predetermined distance by the spacing support 65 and the mixed water flowing out through the outlet 62 travels the predetermined distance, . This collision creates micro-bubbles.

On the other hand, the effective diameter of the outflow hole 62 can be varied by the cross-sectional area adjusting portion 66. [ Here, the effective diameter means a diameter adjusted by the cross-sectional area adjusting portion 66. [

The cross-sectional area adjusting portion 66 may be embodied as a male screw 66 passing through the center of the impingement plate 62 as shown in Fig.

A female screw is formed at the center of the collision plate 62, and a female screw and a male screw 66 at the center of the collision plate 62 are fastened. The male screw 66 enters or retracts into the outflow hole 62 in accordance with the rotation direction of the male screw 66. [ That is, the effective diameter of the outflow hole 62 can be adjusted by adjusting the rotation direction of the male screw 66.

Referring to FIG. 7, it can be seen that as the male screw 66 enters the outlet 62, the effective diameter of the outlet 62 decreases. In this case, the effective diameter of the outflow hole 62 is reduced.

By adjusting the diameter of the outflow hole 62, it is possible to control the diameter and amount of the fine bubbles generated in the nozzle 60.

While the present invention has been described with reference to the particular embodiments and drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

10: droplet forming unit 11: ionization unit
13: electric field generating part 20:
30: Contactor 51, 53, 55: Pump
60: nozzle 70: absorbent regeneration section

Claims (6)

A contactor for storing the absorbent at the bottom; And
And a nozzle immersed in the absorbent stored in the contactor to discharge the wet gas as fine bubbles. The method according to claim 1,
A piping for providing a path through which the wet gas moves;
A droplet forming unit for making at least a part of water vapor contained in the wet gas flowing through the pipe into droplets; And
A droplet separation unit for separating the droplet made in the droplet forming unit from the wet gas; Further,
Wherein the nozzle discharges the wet gas into which the droplet is separated by the droplet separator as fine bubbles. 3. The method of claim 2,
Wherein the droplet forming unit ionizes the wet gas to form a condensation nucleus, and the condensation nucleus is adhered with water vapor contained in the wet gas to form a droplet. The method of claim 3,
The droplet forming unit
An ionization unit for ionizing at least a part of the particles contained in the wet gas; And
And an electric field generating unit for generating an electric field in a piping region through which the wet gas ionized by the ionizing unit passes. 3. The method of claim 2,
A first pump for pumping the absorbent stored in the contactor to provide an absorbent regeneration section for drying the absorbent; And
And a second pump that supplies the absorbent regenerated by the absorbent regeneration unit to the pipe between the nozzle and the droplet separation unit. 6. The method of claim 5,
Wherein the first pump further supplies the absorbent regenerated by the absorbent regeneration section to the contactor.

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