KR20170110907A - Fluid separating device - Google Patents

Abstract

A fluid separation device is provided. The fluid separation device includes a fluid separation membrane module including a fluid separation membrane, a supply flow tube located at an input side of the fluid separation membrane module, a discharge flow tube located at an output side of the fluid separation membrane module, And at least a part of the supply flow path tube and at least a part of the discharge flow path tube are disposed adjacent to each other to constitute a heat exchange section.

Description

Fluid separating device

The present invention relates to a fluid separation device.

Global warming, which is currently the subject of global interest, plays a major role in the greenhouse effect by carbon dioxide and methane gas. This warming not only disturbs the ecosystem but also has a great influence on the social life of the human being, so efforts to reduce the release of greenhouse gases into the atmosphere have been made in various ways.

Carbon dioxide has recently become one of the most noteworthy greenhouse gases. Carbon dioxide can be produced in sewage treatment plants, wastewater treatment plants, landfills, and the like in a large amount in a thermal power plant or a steel mill, in addition to being generated at the time of waste combustion. Therefore, a technique for separating and removing only carbon dioxide from waste gas is being studied. In addition to carbon dioxide, the interest in hydrogen fuel has been amplified, and the technology of separating hydrogen gas has also attracted much attention. In addition, since purely separated oxygen and nitrogen can be utilized in various fields, research on the separation method is continuing. In the future, as technologies for the utilization of specific gases or liquids develop, it is expected that separation techniques for a wider range of fluids will be required.

Separation of specific fluids is difficult to apply in industry simply by establishing separation theory. For example, the carbon dioxide separation technique has been proposed for a long time, such as absorption method, adsorption method, seawater cooling method, or membrane separation method. However, for practical reasons such as enormous energy is required, side effect is difficult, Is very minimal.

However, since the membrane separation method uses relatively low energy compared to other methods, there is an evaluation that it is suitable for commercialization. The direction that has been studied so far in the membrane separation method is mainly to improve the separation efficiency of the membrane. The primary goal is to develop a small size (e.g., 1 inch X 1 inch) separator that can exhibit a separation efficiency of greater than 90% in the laboratory. Large-scale and commercialization are considered as next tasks.

In order to achieve a separation efficiency of more than 90% in the laboratory, many researchers have attempted to make the membrane thinner and to set the pressure difference between the inside and outside of the membrane higher. However, the thinner the thickness and the higher the pressure, the weaker the durability of the separator. Therefore, some researchers are also studying the materials of durable membranes even under these conditions.

However, even if a high-efficiency membrane is developed at the laboratory level as described above, commercialization thereof is a separate problem. First, it is very difficult to produce a thin film membrane in large quantities, and since expensive raw materials must be used, the production cost is greatly increased. Further, in order to apply a thin film membrane to a large-sized equipment, a large number of separators must be assembled, thereby increasing assembly time and assembly cost. Also, the use of high pressure for high efficiency increases the processing cost. Although it is theoretically possible to separate it, if production and processing costs are excessive, realistic commercialization is impossible.

Further, in order to increase the degree of separation of carbon dioxide, a high-pressure compressed gas is required. If the temperature of the gas excessively increases in this process, the separator may be damaged. In the case of residual gas in which the carbon dioxide has been separated off, if the temperature is too low, fine dust or sulfur oxide may attach to the exhaust stack when discharged through the exhaust stack, and the temperature needs to be raised again. A cooler and heater can be installed to control the temperature of the gas, but it is inefficient in terms of energy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fluid separation apparatus with improved energy efficiency.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing the same.

According to an aspect of the present invention, there is provided a fluid separation apparatus including a fluid separation membrane module including a fluid separation membrane, a supply flow tube located on an input side of the fluid separation membrane module, And a compressor connected to the fluid separation membrane module through the supply passage tube and pressurizing the fluid, wherein at least a part of the supply passage tube and at least a part of the discharge passage tube are disposed adjacent to each other, .

The details of other embodiments are included in the detailed description and drawings.

According to the fluid separation apparatus according to the embodiments of the present invention, energy can be saved while raising and lowering the temperature of the gas appropriately.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic diagram of a thermal power generation system including a fluid separation device in accordance with an embodiment of the present invention.
2 is a schematic view of a fluid separation apparatus according to an embodiment of the present invention.
3 is a schematic view of a fluid separation membrane module according to an embodiment of the present invention.
4 is a schematic view of a fluid separation membrane module according to another embodiment of the present invention.
5 is a schematic view of a fluid separation membrane module according to another embodiment of the present invention.
6 is a perspective view of a fluid separation membrane according to an embodiment of the present invention.
7 is a cross-sectional view taken along line VII-VII 'of FIG.
8 is a perspective view showing a shape in which a fluid separation membrane and a spacing member inserted therein are inserted.
9 is a plan view of the spacer of Fig.
10 is a cross-sectional view taken along the line X-X 'in FIG.
11 is an exploded perspective view of a fluid separation membrane and a spacing member according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

It is to be understood that elements or layers are referred to as being "on " other elements or layers, including both intervening layers or other elements directly on or in between. Like reference numerals refer to like elements throughout the specification.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The fluid separation device according to an embodiment of the present invention may be installed in a thermal power plant or the like to be applied to separation and collection of a specific fluid, for example, carbon dioxide, from exhaust gas discharged from a thermal power plant. In the following embodiments, a case where the fluid separator is installed in a thermal power plant will be described as an example.

1 is a schematic diagram of a thermal power generation system including a fluid separation device in accordance with an embodiment of the present invention.

1, a thermal power generation system 1000 includes a combustion chamber 1200, a fluid separation apparatus 1100 provided with exhaust gas discharged from a combustion chamber 1200, and an exhaust stack 1400 connected to the fluid separation apparatus 1100 ). The thermal power generation system 1000 may further include an exhaust gas purifier 1300 between the combustion chamber 1200 and the fluid separator 1100. Between each of the devices, a flow pipe 1500 through which exhaust gas moves may be installed.

The combustion chamber 1200 burns fossil fuel, and the heat is heated by the heat to generate steam. The generated steam is sent to the power generation turbine for power generation. The exhaust gas discharged from the combustion chamber 1200 is discharged through the flow pipe 1500.

The exhaust gas discharged through the flow pipe 1500 is supplied to the exhaust gas purification apparatus 1300. The exhaust gas purifying apparatus 1300 may be appropriately selected depending on the composition of the exhaust gas. For example, when the exhaust gas discharged from the combustion chamber contains dust, nitric oxide and sulfur oxides, the exhaust gas purification apparatus 1300 includes the exhaust apparatus 1310, the denitration apparatus 1320, and the desulfurization apparatus 1330 . The exhaust device 1310 removes dust mixed with the exhaust gas. The denitration unit 1320 removes the mixed oxides in the exhaust gas. The desulfurizer 1330 removes the sulfur oxides mixed in the exhaust gas. The exhaust apparatus 1310, the denitration apparatus 1320 and the desulfurization apparatus 1330 are provided as separate facilities and can be connected in series by the flow pipe 1500, respectively. However, the present invention is not limited thereto, and the two or more devices described above may be integrated into one facility.

The exhaust gas from which harmful components have been removed through the exhaust gas purification apparatus 1300 is provided to the fluid separation apparatus 1100 before being discharged to the exhaust stack 1400. The fluid separation device 1100 separates a specific fluid from the fluid contained in the exhaust gas and discharges the residual gas. The residual gas discharged from the fluid separating apparatus 1100 is transferred to the exhaust stack 1400 through the flow pipe 1300 and discharged to the outside.

Hereinafter, the fluid separating apparatus 1100 will be described in more detail.

2 is a schematic view of a fluid separation apparatus according to an embodiment of the present invention. Referring to FIGS. 1 and 2, the fluid separation apparatus 1100 includes a fluid separation membrane module 1110, a compressor 1120, and feed and discharge flow pipes 1510 and 1520.

The fluid separation membrane module 1110 is a device used to separate a specific fluid from the fluid mixture MF. In this embodiment, the fluid separation membrane module 1110 receives the exhaust gas containing carbon dioxide, nitrogen and the like as the fluid mixture MF, and separates carbon dioxide which is a specific fluid therefrom. The fluid separation membrane module 1110 includes a fluid inlet and a fluid outlet. The fluid outlet includes a first fluid outlet through which a high concentration of carbon dioxide is discharged and a second fluid outlet through which the residual gas is discharged. A detailed description of the fluid separation membrane module 1110 will be described later.

On the other hand, the fluid separation membrane module 1110 increases in separation as the pressure of the supplied gas increases. Accordingly, by increasing the pressure of the exhaust gas through the compressor 1120, the separation efficiency of the fluid separation membrane module 1110 can be increased. For this purpose, the compressor 1120 is disposed at the feed end with respect to the fluid separation membrane module 1110. The compressor 1120 serves to increase the pressure of the exhaust gas passed through the flow pipe 1500. For example, if the pressure of the purified exhaust gas through the exhaust gas purifier 1300 is 1 bar, the compressor 1120 may raise the pressure of the exhaust gas to 4 bar. When the pressure of the exhaust gas is increased by the compressor 1120, the temperature of the exhaust gas also rises. For example, when the temperature of the exhaust gas purified through the exhaust gas purification apparatus 1300 is 60 to 80 占 폚, the temperature of the exhaust gas pressurized by the compressor 1120 may be 150 to 200 占 폚.

The flow pipe 1500 includes a supply flow pipe 1510 located on the input side with respect to the fluid separation membrane module 1110 and a discharge flow pipe 1520 located on the output side. The supply flow pipe 1510 can connect the compressor 1120 and the fluid separation membrane module 1110. The discharge flow pipe 1520 can connect between the fluid separation membrane module 1110 and the exhaust stack. A part of the fluid flowing through the supply flow pipe 1510 is separated from the fluid separation membrane module 1110 and a part of the fluid is moved through the discharge flow pipe 1520. That is, all the fluid flowing through the discharge pipe 1520 is the fluid that has moved through the supply pipe 1510.

On the other hand, it is advantageous that the exhaust gas supplied to the fluid separation membrane module 1110 has a high pressure, but if the temperature is too high, the separation membrane may be damaged. Therefore, it is desirable to cool the exhaust gas that has excessively increased in temperature by the pressurization of the compressor 1120. For example, the temperature of the exhaust gas at 150 to 200 ° C may be lowered to 60 to 80 ° C and then supplied to the fluid separation membrane module 1110.

Further, when the temperature of the exhaust gas discharged through the exhaust stack 1400 is low, the moving speed of the exhaust stack is lowered. Therefore, condensation may occur or fine dust, sulfur oxides remaining in the exhaust gas may adhere to the wall of the exhaust stack 1400 . In order to prevent this, it is preferable that the temperature of the exhaust gas is sufficiently higher than the external atmospheric temperature. For example, when the temperature of the exhaust gas supplied to the fluid separation membrane module 1110 is 60 to 80 ° C, the temperature of the exhaust gas (residual gas) discharged through the fluid separation membrane module 1110 becomes lower, It may be about 50 to 70 占 폚. The temperature of the exhaust gas flowing through the exhaust pipe 1520 is lowered, and the temperature of the exhaust gas may be about 40 to 50 ° C. However, such a temperature is not enough to solve the above-mentioned problem of condensation and the like. Therefore, it is preferable to raise the temperature to, for example, 90 to 100 占 폚 before entering the exhaust stack 1400.

That is, it is preferable that the temperature of the exhaust gas supplied to the fluid separation membrane module 1110 is lowered, and the temperature of the exhaust gas discharged from the fluid separation membrane module 1110 increases. One solution is to install a cooler in the supply flow pipe 1510 and install a heater in the discharge flow pipe 1520. However, it is inefficient from the viewpoint of energy to install the cooler and the heater at the same time.

At least a part of the supply flow pipe 1510 and at least a part of the discharge flow pipe 1520 are disposed so as to be adjacent to each other to achieve effective temperature rise and fall simultaneously. The adjacent supply channel 1510 and exhaust channel 1520 constitute a heat exchanger. That is, the exhaust gas having a high temperature passing through the supply flow pipe 1510 is deprived of the heat energy toward the exhaust gas of relatively low temperature passing through the adjacent exhaust pipe 1520, The temperature of the low temperature exhaust gas is increased by obtaining thermal energy from the exhaust gas at a relatively high temperature passing through the adjacent supply flow pipe 1510. As described above, all of the exhaust gas passing through the discharge pipe 1520 passes through the supply pipe 1510, and the exhaust gas functions as both a temperature raising role and a cooling role.

When the target value of the temperature lowering of the exhaust gas passing through the supply flow pipe 1510 is larger than the target temperature rise value of the exhaust gas passing through the discharge pipe 1520, the amount of the exhaust gas staying in the heat exchanging portion is adjusted, . For example, if the diameter of the discharge pipe 1520 in the heat exchanging part is larger than the diameter of the supply pipe 1510, the temperature of the exhaust gas in the supply pipe 1510 passing through the heat exchanging part can be lowered.

In order to further increase the heat exchange efficiency, the moving direction of the exhaust gas in the supply flow pipe 1510 of the heat exchanging unit and the moving direction of the exhaust gas in the exhaust flow pipe 1520 may be reversed.

Although not shown in the drawings, the heat exchanger may further include a chamber for preventing heat loss, in addition to the supply channel 1510 and the discharge channel 1520 disposed adjacent to each other. Further, in addition to the heat exchanging portion, a cooler and / or a heater may be further provided to assist in achieving the desired temperature. In this case, of course, the energy efficiency is increased.

A pressure regulator 1130 may be installed in the discharge flow pipe 1520 between the fluid separation membrane module 1110 and the heat exchange unit. The pressure regulator regulates the pressure of the exhaust gas so as to control the speed of the fluid entering the heat exchanger while recovering the power to be recycled. Pressure regulator 1130 may be, but is not limited to, a turboexpander, for example.

Hereinafter, a fluid separation membrane module according to various embodiments applicable to the fluid separation device will be described.

3 is a schematic view of a fluid separation membrane module according to an embodiment of the present invention. Referring to Fig. 3, the fluid separation membrane module 1 includes a chamber 20, a fluid separation membrane 10 disposed inside the chamber 20, and a spacing member (not shown). For convenience of illustration, the illustration of the spacers is omitted in Fig.

The fluid separation membrane 10 may be formed in a tube shape. The inside 10s1 of the fluid separation membrane 10 and the outside 10s2 of the fluid separation membrane 10 are physically separated with reference to the fluid separation membrane 10. That is, the space is divided based on the fluid separation membrane 10. At least a part of the fluid can pass through the wall 10S1 of the fluid separation membrane 10 and communicate with the inside and outside portions 10s1 and 10s2 of the fluid separation membrane 10 and this is used for separating a specific fluid such as carbon dioxide.

A separation material (not shown) may be disposed in the fluid separation membrane 10. The spacers can prevent the inner walls of the fluid separation membrane 10 from coming into close contact with each other. A detailed description of the spacers will be given later.

The chamber 20 provides a limited space. The space inside the chamber 20 is physically separated from the space outside the chamber 20. The chamber 20 spatially limits the movement of the fluid supplied therein. Further, the chamber 20 can control various process parameters such as the temperature, pressure, humidity, etc. inside the chamber 20 differently from the outside of the chamber 20 independently. The limited space of the chamber 20 does not necessarily mean only an enclosed space, but may include an open space in communication with the outside.

For example, the chamber 20 may include at least three fluid outlets 21, 22, 25. In an exemplary embodiment, the chamber 20 includes a fluid inlet 25, a first fluid outlet 21, and a second fluid outlet 22.

The fluid inlet 25 is a passage through which the fluid mixture MF, such as exhaust gas, is injected (input) into the chamber 20. For example, the fluid inlet 25 is connected to the supply flow pipe. In one embodiment, the fluid inlet 25 is not connected to the inner space of the fluid separation membrane 10, as shown in FIG. In this case, the fluid mixture MF is injected into the interior of the chamber 20 through the fluid input port 25 and into the outside 10s2 of the fluid separation membrane 10.

The first fluid outlet 21 and the second fluid outlet 22 are passages through which the separated fluids MF1 and MF2 are discharged to the outside of the chamber. The first fluid outlet 21 is spatially connected to the inner space of the fluid separation membrane 10 and can be connected to an external carbon dioxide storage device. The second fluid outlet 22 is not connected to the inner space of the fluid separation membrane 10 and is connected to the discharge flow pipe.

The fluid components moved into the interior 10s1 of the fluid separation membrane 10 through the fluid separation membrane 10 in the fluid mixture injected into the chamber 20 are discharged to the first fluid outlet 21 side (refer to 'MF1'), Can be collected in a connected carbon dioxide storage device. The fluid components remaining in the outer portion 10s2 of the fluid separation membrane 10 may be discharged to the second fluid outlet 22 side (refer to 'MF2') and may be transferred to the exhaust stack through the discharge pipe connected thereto.

4 is a schematic view of a fluid separation membrane module according to another embodiment of the present invention.

4, the fluid separation membrane module 2 according to the present embodiment is configured such that the fluid mixture MF is introduced into the interior 11s1 of the fluid separation membrane 11, 1 in that the fluid is separated from the fluid separation membrane 11 through the fluid passage 11a.

In this embodiment, a fluid mixture MF1 (residual gas) having a relatively low concentration of carbon dioxide is discharged at the first fluid outlet 21, and a fluid mixture (residual gas) having a relatively high concentration of carbon dioxide at the second fluid outlet 22 is discharged (MF2) is discharged.

5 is a schematic view of a fluid separation membrane module according to another embodiment of the present invention.

Referring to FIG. 5, the fluid separation membrane module 3 according to the present embodiment is different from the embodiment of FIG. 1 in that the fluid separation membrane 12 is formed in a plate-like shape.

The plate-like fluid separation membrane 12 seals the inside of the chamber 20 to separate the space. In this embodiment, one side of the fluid separation membrane 12 corresponds to the outer space of the fluid separation membrane 10 of FIG. 1, and the other side of the fluid separation membrane 12 corresponds to the inner space of the fluid separation membrane 10 of FIG. The fluid inlet 25 and the first fluid outlet 21 are formed on one side of the fluid separation membrane 12 and the second fluid outlet 22 is formed on the other side of the fluid separation membrane 12. Although not shown in the drawings, the fluid separation membrane 12 may be provided in a modular form instead of completely dividing the internal space of the chamber 20. The module is disposed inside the chamber 20, and may have a structure in which the fluid separation membrane 12 divides the space within the module. The module may include an outermost cover defining and sealing the enclosure space, in which case the chamber 20 may be omitted.

3 to 5, a plurality of fluid separation membranes 10, 11, and 12 may be disposed in the chamber 20. In the embodiment of Figs. In the case of the tubular fluid separation membranes 10 and 11, a plurality of fluid separation membranes 10 and 11 may be disposed adjacent to each other. In the case of the plate-shaped fluid separation membrane 12, a plurality of fluid separation membranes 12 may be arranged in parallel with each other at a predetermined interval so as to divide a space within the chamber 20 into a plurality of spaces, or a plurality of fluid separation membranes 12 may be stacked Or may be provided in a modular fashion. In this case, a spacing member (not shown) for preventing the fluid separation membranes 12 from coming into close contact with each other may be disposed between the fluid separation membranes 12.

Hereinafter, the above-described fluid separation membrane and spacers will be described in more detail.

6 is a perspective view of a fluid separation membrane according to an embodiment of the present invention. 6 illustrates a tubular fluid separation membrane. 7 is a cross-sectional view taken along line VII-VII 'of FIG. Referring to FIGS. 6 and 7, the tubular fluid separation membrane 100 may have a shape extending in one direction (Z). The fluid separation membrane 100 may be arranged to extend in the longitudinal direction within the chamber, but may be bent at least once.

The cross section perpendicular to the extending direction Z of the fluid separation membrane 100 forms a closed curve. The cross section of the fluid separation membrane 100 has a distorted shape compared to the circular shape. The exemplary cross-sectional shape of the fluid separation membrane 100 is elliptical. Assuming that the outsides of the ellipse and the circle are the same, the ellipse occupies a smaller space than the circle. Therefore, more ellipses can be arranged in the same space than circles. Since the movement of the fluid is performed in the thickness direction of the fluid separation membrane 100 through the fluid separation membrane 100, the larger the area of the fluid exposed on the surface of the fluid separation membrane 100, the greater the amount of fluid movement. If the outer circumference of the fluid separation membrane 100 is the same, the flow amount of the fluid is theoretically the same since the cross-sectional shape has the same surface area, whether circular or elliptical. However, if the sectional shape of the fluid separation membrane 100 is elliptical, more number can be arranged in the same space, so that the total surface area can be increased. In addition, even when the same number of fluid separation membranes 100 are used, the elliptical case in the same space can have a larger outer circumference, that is, a wider surface area than the circular case. Therefore, it can be understood that the elliptical shape has a larger fluid-to-space fluid transfer efficiency than the circular shape.

The cross-sectional shape of the fluid separation membrane 100 may be a rectangle or a rectangle having rounded corners in addition to the ellipse, or a closed curve having a relatively long length in one direction. In this case as well, the space-to-space fluid transfer efficiency can be improved compared to the circular shape. In addition, the fluid separation membrane 100 may have a corrugated shape. If the fluid separation membrane 100 has a corrugated shape, the fluid separation membrane 100 may have a larger surface area than the provided space.

In the following embodiments, the cross-sectional shape of the fluid separation pipe will be described as an example of an oval shape. The direction in which the width of the cross-sectional shape is largest is defined as a first direction (long-diameter direction, X), and the direction perpendicular thereto is defined as a second direction (Y). 6, the width W1 of the fluid separation membrane 100 in the first direction X is greater than the width W2 of the second direction Y. [ The width W1 of the fluid separation membrane 100 in the first direction X is theoretically larger than 1/2 of the outer circumferential length of the fluid separation membrane 100 and less than 1/2 of the outer circumferential length of the cross section. The width W1 of the fluid separation membrane 100 in the first direction X is 1/2 π of the circumferential length of the fluid separation membrane 100, The width W1 in the first direction X of the fluid separating membrane 100 is 1/2 of the outer circumferential length of the fluid separating membrane 100 corresponds to the case where the inner walls of the fluid separating membrane 100 are substantially in close contact with each other. In one embodiment, the ratio of the width W1 of the fluid separation membrane 100 in the first direction X to the circumferential length of the fluid separation membrane 100 may be set within a range of 1/4 to 49/100. If the ratio is 1/4 or more, effective fluid movement efficiency relative to space can be improved. Keeping the above ratio at 49/100 or less helps to prevent the inner wall of the fluid separation membrane 100 from being completely in close contact with the inside of the fluid separation membrane 100 to be closed.

The outer diameter of the fluid separation membrane 100 when the cross section of the fluid separation membrane 100 is adjusted to a circular shape is preferably 60 mm to 300 mm. If the outer diameter is smaller than 60 mm, the inner diameter of the fluid separation membrane 100 may be too small, and the fluid transfer efficiency may be reduced. On the other hand, if the outer diameter of the fluid separation membrane 100 is too large, the surface area of the fluid separation membrane 100 exposed to the fluid relative to the space decreases and the fluid transfer efficiency decreases.

The fluid separation membrane (100) permits communication of a specific fluid. The fluid separation membrane 100 can communicate a specific fluid in both directions of one side and the other side of the fluid separation membrane 100. The specific fluid may be dissociated, absorbed or adsorbed on the surface of the fluid separation membrane 100 to communicate with the inside of the medium 110, or may pass through the fluid separation membrane 100 through chemical bonding and decomposition. The fluid can be diffused by a diffusion method such as Knudsen diffusion, molecular diffusion, surface diffusion, super micropore diffusion, or the like, or by filtration, osmosis, or the like.

The energy required for the specific fluid to pass through the fluid separation membrane 100 is not limited thereto. However, the energy difference between the pressure and the fluid in one side of the fluid separation membrane 100 and the other side (in and out of the tube shape) Chemical energy, etc. that interact between the fluid separation membrane (100).

The fluid separation membrane 100 may include an inorganic material such as a polymer material such as cellulose acetate, polysulfone, or silicone rubber, silica-based ceramics, silica-based glass, alumina-based ceramics, stainless steel porous body, titanium porous body or silver porous body . Selection of the material constituting the fluid separation membrane 100 can be considered not only in the kind of the mixed fluid and the object and fluid to be separated but also in the ease of production method, mass production possibility, durability and the like. In general, polymer materials are relatively easy to manufacture than inorganic materials. For example, in the case of silicone rubber, it is easy to make a desired shape by an extrusion method, and mass production is also easy. Although the silicone rubber is different depending on the kind and the production method, it is not difficult to produce carbon dioxide and nitrogen with a selectivity ratio of about 3: 1 or more and 5: 1 or more, so that carbon dioxide is selectively extracted from air containing carbon dioxide and nitrogen And can be easily used for separation.

The fluid separation membrane 100 may be made of a flexible material. If the constituent material of the fluid separation membrane 100 is flexible, it is easy to bend so that it can be easily installed in various shapes. In addition, the fluid separation membrane 100 may be made of a material having elasticity and elasticity. When the tubular fluid separation membrane 100 has elasticity and elasticity, when the spacer ('150' in FIG. 8) is inserted into the fluid separation membrane 100, it is stretched in the width direction of the spacer, The flow can be suppressed. The silicone rubber has all of the above characteristics, and can be a material of excellent fluid separation membrane 100.

In this specification, the thickness of the fluid separation membrane 100 is defined as the distance between one surface and the other surface. Even when the surface grooves 112 are formed in the fluid separation membrane 100, the thickness of the fluid separation membrane 100 is measured based on a virtual plane passing through the surface.

Thicknesses d1 and d2 of the fluid separation membrane 100 may be uniform along the periphery, but are not limited thereto. For example, the thicknesses d1 and d2 of the fluid separation membrane 100 are generally uniform (refer to 'd1') along the first direction X and relatively small at both ends of the first direction X The thickness d2 may be relatively larger or smaller in the folded portion 101F.

The fluid separation membrane 100 may be integrally formed along the outer periphery. The term " integral type " means a case where a plurality of separation membranes are joined to form a tube, or a single separation membrane is rolled so that both ends are joined to form a tube, not a portion joined together along the outer periphery . A case in which a tube is formed from the beginning by a method such as extrusion or the like is integrally formed.

The average thickness of the fluid separation membrane (100) is related to the manufacturing method of the fluid separation membrane (100). As described above, the fluid separation membrane 100 can be manufactured by an extrusion method that facilitates mass production. For example, when a polymer material such as a silicone rubber is manufactured into a tubular shape by an extrusion method, an average thickness of 0.05 mm or more is required for easy manufacture and commercial mass production. On the other hand, the larger the average thickness of the fluid separation membrane 100 is, the longer the moving distance of the fluid becomes, and the efficiency of separation decreases. When the average thickness of the fluid separation membrane 100 is more than 2 mm, the fluid mobility of the fluid separation membrane module using low energy is drastically lowered and the area of contact with the fluid on the surface of the fluid separation membrane 100 is also reduced, It was confirmed that the separation efficiency was lowered. Therefore, the average thickness of the fluid separation membrane 100 is preferably selected within the range of 0.05 mm to 2 mm.

A plurality of fluid separation membranes 100 may be disposed inside the chamber. Each of the fluid separation membranes 100 may be arranged close to each other along the second direction Y. [ The longitudinal directions of the closely disposed fluid separation membranes 100 may be substantially parallel to each other. In an exemplary embodiment, the gap of the fluid separation membrane 100 adjacent in the second direction Y may be equal to or greater than the thickness of the fluid separation membrane 100 and may be less than or equal to the maximum width W1 of the fluid separation membrane 100. For example, the interval between adjacent fluid separation membranes 100 may range from 0.1 mm to 500 mm. When the interval between adjacent fluid separation membranes 100 is secured to be equal to or greater than 0.1 mm, the effective surface area of the fluid separation membrane 100 in which the fluid communicates can be prevented from being reduced by being in close contact with each other between adjacent fluid separation membranes 100 . By setting the interval of the adjacent fluid separation membranes 100 to 500 mm or less, the area in contact with the surface of the fluid separation membrane 100 in the limited space of the chamber can be sufficiently increased.

The plurality of fluid separation membranes 100 may form one row along the second direction Y. [ It is also possible that a plurality of rows of the fluid separation membranes 100 are arranged in the row direction in the chamber.

The fluid separation membrane module may further include a spacing member inserted into the fluid separation membrane 100, in addition to the fluid separation membrane 100 described above.

8 is a perspective view showing a shape in which a fluid separation membrane and a spacing member inserted therein are inserted. 9 is a plan view of the spacer of Fig. 10 is a cross-sectional view taken along the line X-X 'in FIG.

Referring to FIGS. 8 to 10, spacers 150 may be disposed in the interior 100s1 of the tubular fluid separation membrane 100. FIG. The spacers 150 are disposed inside the fluid separation membrane 100 so as to prevent the inner walls of the fluid separation membrane 100 from being closely contacted and closed.

The spacers 150 may have the same length as that of the fluid separation membrane 100 and may be disposed over the entire extending direction of the fluid separation membrane 100. However, the present invention is not limited thereto, and the spacers 150 may be disposed at a portion of the fluid separation membrane 100, for example, the central portion thereof, and may not be disposed at one end or both ends of the fluid separation membrane 100. Further, a plurality of spacers 150 may be disposed in the longitudinal direction. The plurality of spacers 150 may be spaced apart from each other.

The width W3 of the spacers 150 corresponds to the first direction X of the fluid separation membrane 100 and the thickness direction of the spacers 150 corresponds to the second direction Y of the fluid separation membrane 100 . The width W3 of the spacers 150 is less than or equal to the first direction X inner diameter (= W1-2 * d2) of the fluid separation membrane 100. As the width W3 of the spacing member 150 is equal to or close to the inner diameter of the fluid separation membrane 100 in the first direction X, the flow of the spacing member 150 in the fluid separation membrane 100 interior 100s1 is suppressed And the degree to which the inner wall of the fluid separation membrane 100 is closely attached in a space where the spacers 150 are not disposed in the direction of the width W3 can be reduced. It is confirmed that there is a significant effect on the flow of the spacers 150 and the prevention of the close contact of the inner wall of the fluid separation membrane 100 when the inner diameter of the fluid separation membrane 100 is 0.5 times or more than the inner diameter of the fluid separation membrane 100 in the first direction X. The width W3 of the spacers 150 may range from 0.5 to 1 times the inner diameter of the fluid separation membrane 100 in the first direction X. [

In some embodiments, the spacers 150 may be arranged in a folded or folded configuration in the longitudinal direction at least once inside the fluid separation membrane 100 (100s1). For example, when the maximum width of the spacers 150 is greater than the maximum width W1 of the fluid separation membrane 100, the spacers 150 may be bent or folded at least once in the longitudinal direction, 100) inner side 100s1. In this case, the width W3 of the spacers 150 is defined as the width of the first direction X in the folded or folded state inside the fluid separation membrane 100.

The spacers 150 have a plurality of openings 152 through which the fluid can communicate in the thickness direction (second direction). In an exemplary embodiment, the spacers 150 may have a net shape. The plurality of openings 152 provide a space in which the fluid can stay or move in the inside of the fluid separation membrane 100 (100s1).

The spacers 150 may provide fluid passageways 154 in the longitudinal direction Z. [ The fluid transfer passage 154 in the longitudinal direction Z from the inside of the fluid separation membrane 100 is required to transfer the separated fluid to one end of the fluid separation membrane 100. [ If the fluid separation membrane 100 is completely brought into close contact with the spacers 150 due to a pressure difference between the inside and outside portions 100s1 and 100s2 of the fluid separation membrane 100, The fluid is trapped inside the opening 152 of the spacers 150 and is difficult to be transmitted to one end of the fluid separation membrane 100. To prevent this, the spacers 150 may include a configuration that provides a fluid passageway 154 in the longitudinal direction Z. As an example of the above configuration, a twisted net structure separator 150 may be applied.

As illustrated in the enlarged view of FIG. 9, the twisted net structure repeats the intersection and the intersection upward and downward when the thread 150a in one direction and the thread 150b in the other direction, which constitute the net, cross each other . Therefore, even if the inner surface of the fluid separation membrane 100 is in close contact with the spacers 150, gaps can be maintained in the crossing regions of the seals 150a and 150b. This gap can provide the fluid movement passage 154 in the longitudinal direction Z. [

In some embodiments, the spacers 150 may also provide fluid passageways in the direction of width W3 (first direction). The twisted net structure shown in Fig. 9 can provide not only the fluid movement passage 154 in the longitudinal direction Z but also the fluid movement passage in the width W3 direction because the gap is maintained in the crossing region of the chambers 150a and 150b have.

The spacers 150 may be made of a polymer material such as synthetic resin, nylon, polyester or the like, or a metal material.

11 is an exploded perspective view of a fluid separation membrane and spacers according to another embodiment of the present invention. 11 illustrates a plate-like fluid separation membrane.

The plate-like fluid separation membrane 102 may be formed in a rectangular shape. The plate-like fluid separation membrane 102 may be stacked so that a plurality of sheets overlap. The space between the adjacent plate-shaped fluid separation membranes 102 may be divided into an input space SP_IN where the mixed fluid is provided and a separation space SP_OUT into which the fluid separated from the mixed fluid through the fluid separation membrane 102 enters. The input space SP_IN and the separation space SP_OUT may be alternately arranged. When the negative pressure is applied to the separation space SP_OUT, the spacers 150 may be selectively disposed in the separation space SP_OUT to prevent the adjacent fluid separation membranes 102 from being in close contact with each other.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1000: Thermal power generation system
1100: Fluid separation device
1200: Combustion chamber
1300: Exhaust gas purifier
1400: exhaust stack
1500: Euro tube

Claims (8)

A fluid separation membrane module including a fluid separation membrane;
A supply flow pipe located on an input side of the fluid separation membrane module;
A discharge flow pipe located at an output side of the fluid separation membrane module; And
And a compressor connected to the fluid separation membrane module through the supply flow pipe to pressurize the fluid,
Wherein at least a part of the supply flow pipe and at least a part of the discharge flow pipe are arranged adjacent to each other to constitute a heat exchange portion. The method according to claim 1,
Wherein the fluid that moves the discharge pipe is a fluid that has moved through the supply pipe. The method according to claim 1,
And the diameter of the discharge flow path tube in the heat exchange section is larger than the diameter of the supply flow path tube. The method according to claim 1,
Further comprising a cooler or a heater for assisting the heat exchange unit to regulate the temperature of the supply flow pipe or the discharge flow pipe. The method according to claim 1,
Wherein the fluid separation membrane comprises a silicone rubber. The method according to claim 1,
Wherein the fluid separation membrane is a tubular separation membrane which extends in one direction and has a closed curve shape in which the width of the cross section in the first direction is larger than the width in the second direction. The method according to claim 6,
Wherein the fluid separation membrane further comprises a spacing member disposed within the fluid separation tube such that the width direction corresponds to the first direction. The method according to claim 1,
Wherein the fluid separation membrane is a plate-like separation membrane, and the fluid separation membrane module includes a plurality of the fluid separation membranes stacked.

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