WO2020122303A1

WO2020122303A1 - Ceramic hollow fiber membrane module for contact film process

Info

Publication number: WO2020122303A1
Application number: PCT/KR2018/016283
Authority: WO
Inventors: 박정훈; 이홍주; 이승환; 박유강; 김민광
Original assignee: 주식회사 앱스필
Priority date: 2018-12-14
Filing date: 2018-12-20
Publication date: 2020-06-18

Abstract

The present invention relates to a ceramic hollow fiber membrane module. According to the present invention, the ceramic hollow fiber membrane module has ceramic hollow fiber membranes that are aligned on a hydrophilic metal mesh, and then rolled and potted so as to be prevented from being damaged and be uniformly arranged in the inner space of a housing, and forms communicating spaces in a shell-side dispersed injection unit and a lumen-side dispersed injection unit, or additionally introduces a dispersion unit and a baffle unit so as to improve a gas/liquid flow path of the ceramic hollow fiber membrane module, thereby maximizing mass transfer, and distribute pressure, thereby enabling a stable operation while maintaining mass transfer efficiency without wetting of a separator.

Description

Ceramic hollow fiber module for contact membrane process

The present invention relates to a ceramic hollow fiber module for a contact membrane process, and more particularly, to a ceramic hollow fiber module that enables stable operation while maintaining material transfer efficiency without separation membrane wetting.

The contact separation membrane technology is a process of selectively separating one or more components by contacting an absorbent and a gas through a separation membrane, and is a hybrid technology combining the advantages of liquid absorption (high selectivity) and membrane separation (modularity and miniaturization). The concept of the contact separator was introduced by Schaffer in 1960 for water treatment of food and medicine, and has been actively researched in the field of gas separation since it was used for CO ₂ separation by Qi and Cussler in the 1980s. Currently, the contact separator is applied to various applications such as liquid liquid extraction, gas absorption and stripping, high-density gas extraction, isomer separation, fermentation and enzyme modification, protein extraction, pharmaceutical field, wastewater treatment, metal ion recovery, semiconductor process, and osmotic distillation. Is becoming. In order to remove CO ₂ and O ₂ from the beer production line and extend the life of the boiler, a system for commercially removing CO ₂ from water and ultrapure water production in the semiconductor industry is being operated. Recently, the development of a contact separator technology for reducing acid gases such as CO ₂ , H ₂ S, and SO ₂ generated during combustion of natural gas, industrial processes, and fossil fuels has attracted attention. In particular, CO ₂ has been identified as a major cause of global warming, and many CO ₂ capture technology studies have been conducted worldwide. Therefore, most recent researches on contact separators have focused on developing technologies to capture CO ₂ .

As a technique for reducing acid gas including CO ₂ , absorption processes such as a filling tower, a spray tower, and a bubble tower are commercialized. The absorption process has been able to achieve high acid gas removal efficiency even at normal pressure and low gas concentration, and relatively stable operation is possible, so many developments have been made. The acidic gas capture process based on these liquid absorbents is a relatively efficient technique, but it has some significant limitations: specifically, the energy consumption required for absorbent regeneration is excessive, and a large site size requires a large site. It can cause problems such as corrosion of equipment, loss of solvent, overflow, foam, drift, and entrainment. On the other hand, the contact separation membrane process is regarded as a promising alternative to overcome the disadvantages of the existing absorption process.

In the contact separation membrane, the membrane serves to separate the gas phase and the liquid phase instead of providing selectivity for separation, and to increase the effective contact area for mass transfer. It has the great advantage of being able to reduce device size through high contact area per unit volume while providing high selectivity by absorbent. In addition, the gas phase and the liquid phase can be controlled independently, and since the gas flow rate can be increased without operational problems such as overflow and foam, it is possible to increase the processing capacity of the device in the same volume. In addition, the contact area can be easily controlled by adjusting the number of unit modules, and system prediction is relatively easy, which is advantageous for process scale up. Membrane contactors are known to provide about 30 times more effective contact area than conventional absorption processes, and have been reported to reduce the size of absorption unit processes by up to 10 times.

The separation membrane module has a flat plate type, a spiral type, a tubular type, a hollow fiber type, etc., but the hollow fiber membrane has received the most attention recently because it can maximize the membrane area per unit volume and compact module configuration compared to other formulations.

The conventional hollow fiber module, as shown in Figure 1, the housing 100 for receiving the hollow fiber membrane 10, shell side (Shell side) fluid injection unit (110a, 110b), lumen side (Lumen side) fluid injection unit ( 120a, 120b), and a potting part 400.

By the way, the membrane resistance existed in the contact separation membrane in the conventional hollow fiber module, especially during long-term operation using the basic unit module, as shown in FIG. 2(a), the pressure is applied at the shell side injection part, so that it breaks through. As the pressure rises above the breakthrough pressure, as shown in Fig. 2(b), a wetting phenomenon caused by the absorbent occurs in the separator. When the separator is wet by the absorbent, the mass transfer resistance increases rapidly. In addition, in the conventional common hollow fiber module, the hollow fiber bundles are ported in parallel in a row, in which case, in most cases, the gap between the separators has an uneven distribution. Therefore, severe fluid drift and bypass may occur on the shell side of the module, which may cause a decrease in mass transfer characteristics. This does not appear well on a laboratory scale, but it can cause serious problems when designing large processes. In addition, since the ceramic hollow fiber membrane is fragile, it is damaged during potting, and thus it is difficult to manufacture. In addition, the sealing material used for the membrane pores and modularization may be damaged by the absorbent, and an additional replacement cost is incurred depending on the module life. And the increase in pressure drop caused by the flow of fluid with a small inner diameter of the hollow fiber membrane increases the process operation cost. These shortcomings act as a major obstacle to the commercialization of the contact separator, and have caused many limitations in industrial field applications.

Therefore, depending on the fluid flow in the contact separation membrane, the overall performance may be influenced by membrane resistance rather than gas phase and liquid phase. This indicates that it is important to consider the structure of the separator and the absorbent, as well as the module structure that controls the fluid flow, when designing the contact separator process. Accordingly, the development of a module design in which regular arrangement of the hollow fiber membrane, filling rate, and flow direction of the fluid are considered as important factors is emerging as a major issue.

The present invention has been devised to improve the above problems, and the object of the present invention is to prevent the breakage of the ceramic hollow fiber membrane, to be evenly disposed in the space inside the housing, and the first fluid and the second fluid. It is to provide a ceramic hollow fiber module that is uniformly injected through a shell side dispersion injection unit and a lumen side dispersion injection unit to maintain high mass transfer efficiency without separation membrane wetting.

In order to achieve the above object, the present invention is a hollow fiber membrane bundle comprising a plurality of ceramic hollow fiber membranes, a hydrophilic metal mesh surrounding each hollow fiber membrane in the hollow fiber membrane bundle, and a ceramic hollow fiber membrane bundle surrounded by the hydrophilic metal mesh. The housing is accommodated, a cylindrical housing in which a plurality of through holes through which the first fluid is movable is formed at both ends, coupled to one end of the housing, and an entrance through which the second fluid enters and exits the lumen side of the hollow fiber membrane. It is formed, the lumen side dispersion injection unit is formed a communication space between the lumenside entrance and the hollow fiber membrane, and surrounding the periphery of the outer circumferential surface at one end of the cylindrical housing, a communication space is formed to communicate with the through hole of the housing , On one side, a ceramic hollow fiber module including a shell side dispersion injection unit having an entrance through which a first fluid enters and exits a shell side is formed.

In addition, the present invention, a hollow fiber membrane bundle made of a plurality of ceramic hollow fiber membrane, a hydrophilic metal mesh (mesh) surrounding each hollow fiber membrane in the hollow fiber membrane bundle, the ceramic hollow fiber membrane bundle surrounded by the hydrophilic metal mesh is accommodated, cylindrical A cylindrical shape in which a baffle unit in which a plurality of through holes are formed on the surface, a bundle of ceramic hollow fiber membranes surrounded by the hydrophilic metal mesh, and a baffle unit are accommodated, and a plurality of through holes in which the first fluid is movable at both ends are respectively formed. A housing, a shell side dispersion injecting unit that surrounds an outer circumferential surface at one end of the cylindrical housing, communicates with a through hole of the housing, and provides a passage for a first fluid, and an entrance through which a first fluid is introduced and exits at one side. It provides a ceramic hollow fiber module that is coupled to the upper and lower parts of the housing and includes a funnel-shaped lumen side dispersion injection unit having an entrance through which a second fluid enters and exits a lumen side.

According to the present invention, in the ceramic hollow fiber module, the ceramic hollow fiber membranes can be arranged on a hydrophilic metal mesh and rolled to prevent damage to the ceramic hollow fiber membranes, and can be evenly disposed in the space inside the housing, and the shell side. By forming a communication space in the dispersion injection unit and the lumen side dispersion injection unit, or by introducing a dispersion unit and a baffle unit, the gas/liquid flow path of the ceramic hollow fiber module is improved to maximize mass transfer and distribute pressure. , It has the effect that stable operation is possible while maintaining the efficiency of mass transfer without wetting the separator.

1 is a conceptual diagram showing the overall structure of a conventional ceramic hollow fiber module.

FIG. 2 is a photograph showing a flow of fluid at a shell side injection part and (b) wetting phenomenon by an absorbent in a conventional ceramic hollow fiber module.

3 is a perspective view showing the overall structure of a ceramic hollow fiber module according to an embodiment of the present invention.

4 is a perspective view showing the overall structure of a ceramic hollow fiber module according to another embodiment of the present invention.

5 is an exploded perspective view schematically showing the configuration of a ceramic hollow fiber module according to another embodiment of the present invention.

Figure 6 shows the problem of the existing ceramic hollow fiber membrane porting, and in the ceramic hollow fiber module according to an embodiment of the present invention, the formation of a ceramic hollow fiber membrane bundle formed using a hydrophilic metal mesh.

7 shows a ceramic hollow fiber membrane bundle formed using a hydrophilic metal mesh in a ceramic hollow fiber module according to an embodiment of the present invention.

Figure 8 in the ceramic hollow fiber module according to an embodiment of the present invention, shows the flow of fluid in the shell side dispersion injection unit.

9 is a ceramic hollow fiber module according to an embodiment of the present invention, showing the flow of fluid in the shell side dispersion injection unit.

10 is a ceramic hollow fiber membrane module according to another embodiment of the present invention, showing the configuration of the lumen side dispersion injection unit.

11 is a ceramic hollow fiber module according to an embodiment of the present invention, showing the flow of fluid in the lumen side dispersion injection unit.

12 is a ceramic hollow fiber module according to an embodiment of the present invention, showing the flow of the fluid according to the presence or absence of the dispersion unit in the lumen side dispersion injection unit.

13 is a ceramic hollow fiber module according to an embodiment of the present invention, a state in which a baffle unit is mounted on a bundle of ceramic hollow fiber membranes formed using a hydrophilic metal mesh.

14 is a view of a ceramic hollow fiber module according to an embodiment of the present invention, in which a baffle unit is mounted on a bundle of ceramic hollow fiber membranes formed using a hydrophilic metal mesh, and combined with a housing by O-ring sealing.

15 is a photograph showing a connection portion of a ceramic hollow fiber module according to an embodiment of the present invention.

16 is a view showing a state in which a plurality of unit modules of a ceramic hollow fiber module according to an embodiment of the present invention are connected.

17 is a view showing a method of operating a ceramic hollow fiber module according to an embodiment of the present invention.

18 is a view provided with an auxiliary pump in the ceramic hollow fiber module according to an embodiment of the present invention.

In order to achieve the above object, the present invention is a hollow fiber membrane bundle made of a plurality of ceramic hollow fiber membranes, a hydrophilic metal mesh surrounding each hollow fiber membrane in the hollow fiber membrane bundle, and a ceramic hollow fiber membrane bundle surrounded by the hydrophilic metal mesh The housing is accommodated, a cylindrical housing in which a plurality of through holes through which the first fluid is movable is formed at both ends, coupled to one end of the housing, and an entrance through which the second fluid enters and exits the lumen side of the hollow fiber membrane. It is formed, the lumen side dispersion injection unit is formed a communication space between the lumenside entrance and the hollow fiber membrane, and surrounding the periphery of the outer peripheral surface at one end of the cylindrical housing, a communication space is formed to communicate with the through hole of the housing , On one side, a ceramic hollow fiber module including a shell side dispersion injection unit having an entrance through which a first fluid enters and exits a shell side is formed.

In addition, preferably, the bundle of ceramic hollow fiber membranes surrounded by the hydrophilic metal mesh may be formed by aligning the ceramic hollow fiber membranes in line with the hydrophilic metal mesh and then rolling them.

In addition, preferably, the hollow fiber membrane bundle may be formed so that the filling rate of the ceramic hollow fiber membrane in the housing is 10 to 60%.

Also preferably, the hydrophilic metal mesh may be a hydrophilic stainless mesh.

In addition, preferably, the ceramic hollow fiber module may contact the first fluid and the second fluid in a cross-flow manner.

Also preferably, the first fluid may be a liquid containing an absorbent, and the second fluid may be a gas containing an object to be adsorbed.

Also preferably, the first fluid is an amine-based solution that absorbs CO ₂ , and the second fluid may be a gas including CO ₂ and N ₂ .

In addition, preferably, the ceramic hollow fiber module is injected through a through hole in a state in which pressure is evenly distributed as the fluid spreads around the periphery of the housing through a communication space in the shell side dispersion injection unit during fluid injection. Can contact you.

Also, preferably, the ceramic hollow fiber module is injected through a through hole in a state in which pressure is evenly distributed while the fluid spreads around the periphery of the housing and around the baffle through the shell side dispersion injection unit and the baffle unit during fluid injection. It can come into contact with the hollow fiber membrane.

In addition, preferably, a ring-shaped protrusion may be formed at one point of the top, bottom, and middle portions of the baffle unit to be sealed with the interior of the housing.

In addition, preferably, the sealing may be performed using a silicone O-ring.

In addition, preferably, the lumen side dispersion injection unit is a first dispersion unit for dispersing the injection of fluid at the lumen side fluid inlet and a plurality of through the shower head in order for the injected fluid to be evenly distributed in the hollow fiber membrane bundle in the housing. It may include a second dispersion unit having a hole.

In addition, preferably, the ceramic hollow fiber module may further include a connection portion for connection of the unit module.

In addition, preferably, the ceramic hollow fiber module may further include an auxiliary pump to control the pressure difference between the liquid phase and the gas phase.

While the invention allows for various modifications and variations, specific embodiments thereof are illustrated and illustrated in the drawings, which will be described in detail below. However, it is not intended to limit the invention to the specific forms disclosed, but rather the invention includes all modifications, equivalents, and substitutes consistent with the spirit of the invention as defined by the claims.

When an element, such as a layer, region, or substrate, is referred to as being “on” another component, it will be understood that it may be directly on another element or intermediate elements may be present therebetween. .

Although the terms first, second, etc. can be used to describe various elements, components, regions, layers and/or regions, these elements, components, regions, layers and/or regions It will be understood that it should not be limited by these terms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

Figure 4 is a perspective view showing the overall structure of a ceramic hollow fiber module according to another embodiment of the present invention, Figure 5 is an exploded perspective view schematically showing the configuration of a ceramic hollow fiber module according to another embodiment of the present invention.

3, 4 and 5, the ceramic hollow fiber module according to an embodiment of the present invention includes a housing 100 in which the hollow fiber membrane bundle is accommodated, a shell side dispersion injection unit 102 and a lumen side dispersion injection It includes a unit 200.

The housing 100 has a cylindrical large tube shape, and a hollow housing space portion is formed therein, so that a plurality of hollow fiber membranes 10 are accommodated in the housing space portion.

Here, the hollow fiber membrane 10 is a separation membrane formed in a tubular shape having a surface and a hollow on which fine pores are formed, wherein the hollow fiber membrane 10 is a ceramic hollow fiber membrane.

6 and 7 show a ceramic hollow fiber membrane bundle formed using a hydrophilic metal mesh in the ceramic hollow fiber module according to an embodiment of the present invention.

Both ends of the bundle of the hollow fiber membrane 10 are fixed by a potting part 400 formed by curing the synthetic resin. The liquid synthetic resin fills the voids between the hollow fiber membranes. At this time, in general, as shown in FIG. 6 in the process of forming a bundle of hollow fiber membranes 10, when the ceramic hollow fiber membranes 10 are twisted, a phenomenon in which the ceramic hollow fiber membranes break when forming the potting part 400 occurs, By having a non-uniform distribution between the separation membranes, severe fluid drift and bypass may occur on the shell side of the module, which may lead to a decrease in mass transfer characteristics.

In order to solve this problem, the present invention, as shown in Figures 6 and 7, the ceramic hollow fiber membrane 10 is arranged in a row in a hydrophilic metal mesh (mesh) 500, rolled and rolled hollow fiber membrane 10 It is characterized by forming. The hydrophilic metal mesh 500 is formed in a form surrounding the hollow fiber membrane 10 to prevent the hollow fiber membrane from breaking when the potting part 400 is formed, and to maintain proper spacing between the hollow fiber membranes, thereby performing gas/liquid mass transfer. It is possible to secure a space where the adhesive can enter and seal between the hollow fiber membranes when porting the module, and to prevent drift of the shell side.

At this time, the hydrophilic metal mesh 500 may be used generally used in the art. In one embodiment of the present invention, a hydrophilic stainless mesh was used.

The bundle of the hollow fiber membrane 10 is preferably formed so that the filling ratio of the ceramic hollow fiber membrane in the housing is 10 to 60%. If the filling rate exceeds 60%, there is a problem in that the sealing agent is not properly sealed because the sealing agent is not well injected between the hollow fiber membranes during module production.

A plurality of through-holes 101 through which fluid can move is formed at both ends of the housing 100. A shell side dispersion injection unit 102 is installed in the region where the through hole 101 is formed.

The shell side dispersion injection unit 102 includes an area in which the through hole 101 of the housing is formed, surrounds an outer circumferential surface at one end of the cylindrical housing, and a communication space is formed to communicate with the through hole of the housing. , On one side, the

outlets

110a and 110b through which the fluid enters and exits are formed.

In the

fluid inlets

110a and 110b formed in the upper and lower shell side dispersion injecting units 102 of the housing 100, the fluid injected into the first inlet 110a is discharged to the second inlet 110b. On the contrary, the fluid injected into the second entrance 110b is discharged to the first entrance 110a. The fluid may be a gas containing an object to be adsorbed or a liquid containing an absorbent, but is not limited thereto.

The ceramic hollow fiber module according to the present invention is characterized by applying a cross-flow method for the purpose of efficiently meeting the liquid absorbent and the gas to improve the material transfer characteristics. Conventional contact membrane modules used a parallel-flow method in which the gas phase and liquid phase meet in parallel in countercurrent or co-current flow through the separation membrane, but the cross-flow method used in the ceramic hollow fiber module according to the present invention is a gas phase It is a method that is induced so that the liquid phase and the liquid phase can be contacted at a specific angle or vertically rather than horizontally. This cross-flow method minimizes bypass of the shell side of the module and improves mass transfer characteristics because fluid flow can be formed in a direction hitting the surface of the separator.

8 and 9 in the ceramic hollow fiber module according to an embodiment of the present invention, shows the flow of fluid in the shell side dispersion injection unit.

8 and 9, in the ceramic hollow fiber module according to the present invention, the fluid injected into the

outlets

110a and 110b of the shell side dispersion injection unit 102 directly contacts the hollow fiber contact membrane. Rather, it spreads around the periphery of the housing through a communication space surrounding the housing and is injected into the hollow fiber contact membrane inside the housing through a plurality of through

holes

101 and 101a formed in the housing. Therefore, when the fluid is injected, the pressure is evenly distributed and injected, and it is injected in a cross-flow manner, so that stable operation is possible while maintaining high mass transfer efficiency without wetting the separator.

In addition, as shown in FIG. 9, the fluid in contact with the hollow fiber contact membrane moves in the longitudinal direction of the hollow fiber contact membrane and exits out of the housing through a plurality of through holes 101b formed at the ends of the housing. The ceramic hollow fiber module according to the present invention can be used in one stage, and can also be connected in two stages. If the ceramic hollow fiber module is connected in two stages, the fluid that has flowed out of the housing on the same principle moves through the connection part and then contacts the hollow fiber inside the housing through the through hole 101c formed at one end of the housing of the next module. It is injected into the membrane and moves in the longitudinal direction of the hollow fiber contact membrane and exits through the housing through a plurality of through holes 101d formed at the ends of the housing.

The lumen side dispersion injection unit 200 may be coupled to the upper and lower portions of the housing 100, and on one side, entrances 120a and 120b through which fluid enters and exits the lumen side of the hollow fiber membrane are formed. , A communication space is formed between the

lumen side entrances

120a and 120b and the hollow fiber membrane.

As shown in FIG. 10, the lumen side dispersion injection unit 200 is mounted on the lumen side dispersion injection unit main body at the lumen

side fluid inlets

120a and 120b to form a through hole to disperse the fluid injection. The dispersing unit 201 and the injected fluid may further include a second dispersing unit 202 having a plurality of through-holes in the form of a shower head in order to be dispersively injected into the hollow fiber membrane bundle in the housing.

In the

fluid entrances

120a and 120b formed in the lumen side dispersion injection unit 200, the fluid injected into the first entrance 120a is discharged to the second entrance 120b, and conversely to the second entrance 120b The injected fluid is discharged to the first entrance (120a). The fluid may be a gas containing an object to be adsorbed or a liquid containing an absorbent, but is not limited thereto.

In the ceramic hollow fiber module according to the present invention, if the liquid containing the absorbent is injected into the

fluid inlets

110a and 110b formed in the shell side dispersion injection unit 102, the lumen side dispersion injection unit 200 A gas containing an adsorption object is injected into the formed

fluid inlets

120a and 120b, and if a gas containing an adsorption object is injected into the

fluid inlets

110a and 110b formed in the shell side dispersion injection unit 102, A liquid containing an absorbent may be injected into the

fluid inlets

120a and 120b formed in the lumen side dispersion injection unit 200.

Preferably, a liquid containing an absorbent is injected into the

fluid inlets

110a and 110b formed in the shell side dispersion injecting unit 102, and adsorbed to the

fluid inlets

120a and 120b formed in the lumen side dispersion injecting unit 200. The gas containing the object may be injected. At this time, the gas containing the object to be adsorbed may be a gas containing CO ₂ and N ₂ , and the liquid containing the absorbent may use an amine-based solution capable of absorbing CO ₂ .

11 and 12 in the ceramic hollow fiber module according to an embodiment of the present invention, shows the flow of the fluid in the lumen side dispersion injection unit.

As shown in FIG. 11, since the lumen side dispersion injection unit 200 also forms a communication space, the fluid injected into the outlets 210a and 210b of the lumen side dispersion injection unit 200 directly contacts the hollow fiber membrane. Rather, it moves while filling the communication space, so pressure can be evenly distributed and injected.

In addition, as shown in FIG. 12, when the first dispersing unit 201 and the second dispersing unit 202 dispersing the injection of fluid into the body of the lumen side dispersing injection unit 200 are not included (a) By being biased and injected, a drift phenomenon may occur on the lumen side of the contact membrane module and the entire separation area may not be used and a dead zone may occur, but according to the present invention, the lumen side dispersion injection unit 200 ) When the first dispersing unit 201 and the second dispersing unit 202 are mounted on the body (b), it is possible to distribute the injected fluid evenly to all hollow fiber membranes of the module without dead zones. The contact area can be maximized by contacting the fluid.

13 is a state in which a baffle unit is mounted on a bundle of ceramic hollow fiber membranes formed using a hydrophilic metal mesh.

As shown in FIG. 13, the baffle unit 300 surrounds the bundle of the ceramic hollow fiber membrane 10 inside the housing 100 in a cylindrical shape, and a plurality of through holes 301 are formed on the surface as a whole. Accordingly, the pressure is partially distributed through the through-hole 101 of the housing, and the introduced fluid hits the housing wall due to the baffle unit and spreads, and is transmitted to the hollow fiber membrane through the through-hole 301. Therefore, the fluid can be uniformly injected into the entire hollow fiber membrane.

In addition, a ring-shaped protrusion 302 is provided at the top, bottom, and middle of the baffle unit 300. The protrusion 302 is detachable to the baffle unit 300 and sealed to the inner wall of the housing 100 to prevent the injected fluid from leaking out. In particular, the middle protrusion 302 prevents the flow of fluid flowing out of the baffle so that the fluid has sufficient time to contact the hollow fiber membrane inside the baffle through the through-hole 301 of the baffle to improve the material transfer efficiency. .

At this time, as a method of sealing the protrusion, there is a method using an adhesive, but since the adhesive is dissolved in an amine solution that is a CO ₂ absorber in the long term, as shown in FIG. 14, sealing is performed using a silicone O-ring 401. can do. When the silicone O-ring 401 is used, it is also economical because the outer housing 100 can be continuously recycled.

On the other hand, in the ceramic hollow fiber module according to the present invention, since the ceramic hollow fiber membrane is fragile when the length is increased, unlike the polymer hollow fiber membrane, efficient connection of the unit modules is important for large area. Accordingly, the ceramic hollow fiber module according to the present invention may further include connecting

parts

600 and 601 for connecting the unit modules.

15, the ceramic hollow fiber module according to the present invention can be connected through a lumen side connection portion 601 and a shell side connection portion 600, and the lumen side connection portion 601 and the shell side connection portion 600 are also Since the communication space is formed, the moving fluid moves while filling the communication space, so that the pressure in the module is evenly distributed.

As shown in FIG. 16, the ceramic hollow fiber module according to the present invention can be adjusted in length by connecting in multiple stages using the connecting

parts

600 and 601.

In addition, when the hollow fiber module is connected to increase the length, the performance may decrease due to concentration polarization in the module at the rear stage. Accordingly, a fluid entrance 602 may be formed at one side of the shell side connection part 600. This concentration polarization can be minimized by dispersing and supplying new fluid at the fluid inlet 602 of the connection part.

As shown in FIG. 17, the ceramic hollow fiber module according to the present invention can perform all 8 operation methods according to gas/liquid flow, and can select an operation condition suitable for a purpose to perform operation.

At this time, it is important to balance the pressure of the liquid phase and the gas phase. If the pressure of the liquid phase exceeds the minimum permeation pressure, as shown in FIG. 2, a phenomenon in which the pores of the separator wets into the liquid phase occurs, resulting in a significant decrease in the contact membrane performance. In addition, when the pressure of the gas phase is high, the gas phase may pass to the liquid phase and bubbles may be generated in the liquid phase.

Therefore, it is very important to control the pressure difference (ΔP) between the liquid phase and the gas phase in the contact membrane process. In general, to maintain the pressure of the liquid phase slightly higher than the gas phase, and to control the pressure difference (ΔP) between the liquid phase and the gas phase, a ceramic hollow fiber module according to the present invention may be additionally provided with an auxiliary pump.

As shown in FIG. 18, the height of the liquid phase can be adjusted according to the height of the auxiliary pump 700, and thus the pressure difference (ΔP) between the liquid phase and the gas phase can be adjusted.

The present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art belongs can various modifications and equivalent other embodiments from this. Will understand. Therefore, the technical protection scope of the present invention should be defined by the following claims.

[Description of codes]

1: Hollow fiber membrane module

10: hollow fiber membrane

100: housing

101, 101a, 101b, 101c, 101d: through hole in the housing

102: shell side dispersion injection unit

110a, 110b: fluid entrance of the shell side dispersion unit

200: lumen side dispersion injection unit

120a, 120b: fluid entrance of the lumen side dispersion injection unit

201: first dispersion unit

202: second dispersion unit

300: baffle unit

301: through hole of the baffle unit

302: protrusion of the baffle unit

400: potting part

401: silicone O-ring

500: hydrophilic metal mesh

600: shell side connection

601: lumen side connection

602: fluid outlet of the connection

700: auxiliary pump

Claims

A hollow fiber membrane bundle made of a plurality of ceramic hollow fiber membranes;

A hydrophilic metal mesh surrounding each hollow fiber membrane in the hollow fiber membrane bundle;

A cylindrical housing in which a bundle of ceramic hollow fiber membranes enclosed by the hydrophilic metal mesh is accommodated, and a plurality of through holes in which a first fluid is movable at both ends are respectively formed;

A lumen side dispersion injection unit coupled to one end of the housing and an entrance through which a second fluid enters and exits the lumen side of the hollow fiber membrane, and a communication space between the lumen side entrance and the hollow fiber membrane; And

A shell side dispersion injection is formed at one end of the cylindrical housing to surround the outer circumferential surface, a communication space is formed to communicate with the through-hole of the housing, and an entrance through which the first fluid enters and exits the shell side on one side. Ceramic hollow fiber module including a unit.
A hollow fiber membrane bundle made of a plurality of ceramic hollow fiber membranes;

A hydrophilic metal mesh surrounding each hollow fiber membrane in the hollow fiber membrane bundle;

A baffle unit in which a bundle of ceramic hollow fiber membranes surrounded by the hydrophilic metal mesh is accommodated, and a plurality of through holes are formed on the surface;

A cylindrical housing in which a bundle of ceramic hollow fiber membranes surrounded by the hydrophilic metal mesh and a baffle unit are accommodated, and a plurality of through holes in which a first fluid is movable at both ends are formed;

A shell side dispersion injection unit that surrounds an outer circumferential surface of one end of the cylindrical housing, communicates with a through hole of the housing, and provides a passage for a first fluid, and has an entrance through which a first fluid enters and exits; And

Ceramic hollow fiber module coupled to the upper and lower parts of the housing and including a funnel-shaped lumen side dispersion injection unit having an entrance through which a second fluid enters and exits a lumen side.
The method according to claim 1 or 2,

The ceramic hollow fiber membrane bundle surrounded by the hydrophilic metal mesh is a ceramic hollow fiber module, characterized in that the ceramic hollow fiber membranes are formed in a row after being aligned with a hydrophilic metal mesh.
The method according to claim 1 or 2,

The hollow fiber membrane bundle is a ceramic hollow fiber module, characterized in that the filling rate of the ceramic hollow fiber membrane in the housing is 10 to 60%.
The method according to claim 1 or 2,

The hydrophilic metal mesh is a ceramic hollow fiber module, characterized in that the hydrophilic stainless mesh.
The method according to claim 1 or 2,

The ceramic hollow fiber module is a ceramic hollow fiber module, characterized in that the first fluid and the second fluid are in a cross-flow (cross-flow) contact.
The method according to claim 1 or 2,

The first fluid is a liquid containing an absorbent, the second fluid is a ceramic hollow fiber module, characterized in that the gas containing the object to be adsorbed.
The method according to claim 1 or 2,

The first fluid is an amine-based solution that absorbs CO 2 , and the second fluid is a ceramic hollow fiber module, characterized in that it is a gas containing CO 2 and N 2 .
According to claim 1,

The ceramic hollow fiber module is characterized in that when the fluid is injected, the fluid spreads around the periphery of the housing through the communication space in the shell side dispersion injection unit and is injected through the through hole in a state in which pressure is evenly distributed to contact the hollow fiber membrane. Ceramic hollow fiber module.
According to claim 2,

When the fluid is injected, the ceramic hollow fiber module spreads through the shell side dispersion injection unit and the baffle unit while surrounding the housing and the baffle, so that the pressure is evenly distributed and injected through the through hole in contact with the hollow fiber membrane. Ceramic hollow fiber module, characterized in that.
According to claim 2,

A ceramic hollow fiber module characterized in that a ring-shaped protrusion is formed at one point of the upper, lower, and middle portions of the baffle unit and sealed inside the housing.
The method of claim 11,

The sealing is a ceramic hollow fiber module, characterized in that performed using a silicon O-ring.
According to claim 2,

The lumen side dispersion injection unit is a first dispersion unit for dispersing the injection of fluid at the lumen side fluid entrance and a second having a plurality of through-holes in the form of a shower head for the injected fluid to be evenly distributed in the hollow fiber membrane bundle in the housing Ceramic hollow fiber module comprising a dispersion unit.
The method according to claim 1 or 2,

The ceramic hollow fiber module is a ceramic hollow fiber module, characterized in that it further comprises a connecting portion for the connection of the unit module.
The method according to claim 1 or 2,

The ceramic hollow fiber module further comprises an auxiliary pump to control the pressure difference between the liquid phase and the gas phase.