KR101913901B1 - Hollow fiber distillation system - Google Patents

Hollow fiber distillation system Download PDF

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KR101913901B1
KR101913901B1 KR1020160007391A KR20160007391A KR101913901B1 KR 101913901 B1 KR101913901 B1 KR 101913901B1 KR 1020160007391 A KR1020160007391 A KR 1020160007391A KR 20160007391 A KR20160007391 A KR 20160007391A KR 101913901 B1 KR101913901 B1 KR 101913901B1
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South Korea
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module
hollow fiber
fiber membrane
distillation
treated water
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KR1020160007391A
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Korean (ko)
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KR20170087986A (en
Inventor
김영득
김우승
최준석
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한양대학교 에리카산학협력단
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
    • B01D61/364—Membrane distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
    • B01D61/366—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
    • B01D61/368—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A distillation system is provided. The distillation system includes a first hollow fiber membrane module including a first hollow fiber membrane extending in a first direction in an inner space into which the process water flows, A first separation module for condensing the steam in the first reception module, and a second separation module for receiving the treated water from the first hollow fiber membrane module and generating steam in the process of condensing the vapor in the first reception module A second hollow fiber membrane module including a second hollow fiber membrane that receives latent heat from the first separation membrane and increases the temperature of the treated water and extends in the first direction in an inner space into which the treated water flows, .

Figure R1020160007391

Description

Hollow fiber distillation system

The present invention relates to a distillation system, and more particularly, to a distillation system capable of easily recovering latent heat generated during condensation of steam introduced into a hollow fiber membrane.

With the global population growth and the proliferation of industrial pollution, almost all countries will experience water shortages by 2025, with half of them expected to face a serious crisis of water security. The recent extreme climatic phenomena associated with global warming are adding to the uncertainty of securing water resources. Therefore, the paradigm of water resource management is rapidly changing for continuous and stable water supply in preparation for climate change. Especially developed countries such as USA, Lake, Singapore, and Europe have developed various water resources to solve the imbalance of regional and temporal water supply. And is trying to secure sustainable water resources through concrete reuse and desalination of seawater.

For example, Korean Patent Laid-Open Publication No. 10-2013-0125446 (Application No. 10-2012-0048952) discloses a method for producing electric energy while rotating a turbine by treated water flowing out from a cold water supply tank included in a membrane distillation separation membrane module There is disclosed a power generating and water purification apparatus using a pressure delayed membrane distillation including a generator.

A technical problem to be solved by the present invention is to provide a highly efficient distillation system.

Another technical problem to be solved by the present invention is to provide a distillation system with improved latent heat recovery.

Another technical problem to be solved by the present invention is to provide a distillation system with improved desalination rate.

Another technical problem to be solved by the present invention is to provide a distillation system with reduced manufacturing costs.

The technical problem to be solved by the present invention is not limited to the above.

In order to solve the above technical problems, the present invention provides a distillation system.

According to one embodiment, the distillation system comprises a first hollow fiber membrane module including a first hollow fiber membrane extending in a first direction in an inner space into which the process water flows, A first receiving module for receiving steam introduced into the desert, a first separator for condensing steam in the first receiving module, and a second separator for receiving the treated water from the first hollow fiber membrane module, And a second hollow fiber membrane extending in the first direction in the inner space into which the process water is introduced, wherein the second hollow fiber membrane receives the latent heat generated during condensation from the first separation membrane and increases the temperature of the process water, And a second hollow fiber membrane module.

According to one embodiment, the distillation system may further comprise a second receiving module for receiving the vapor introduced into the second hollow fiber membrane from the treated water, a second separator for condensing the vapor in the second receiving module, Receiving the treated water from the hollow fiber membrane module and receiving the latent heat generated in the process of condensing the steam in the second receiving module from the second separation membrane to increase the temperature of the treated water, And a third hollow fiber membrane extending in the first direction within the first hollow fiber membrane module.

According to an embodiment, the bottom surface of the inner space of the first hollow fiber membrane module includes an inlet through which the process water flows, and an upper surface of the inner space of the first hollow fiber membrane module includes an outlet through which the process water flows , The first hollow fiber membrane may extend in a direction parallel to the bottom surface and the upper surface of the inner space of the first distillation unit.

According to one embodiment, the distillation system comprises a first hollow fiber membrane module disposed below the first hollow fiber membrane module and the first receiving module and having a groove in which the condensed water condensed in the first separating membrane is collected, Module. ≪ / RTI >

According to one embodiment, the first collecting module includes a hole communicating with the inlet of the first hollow fiber membrane module, and the distillation system is connected to the inlet of the first hollow fiber membrane module, 1 collection module having a hole communicating with the hole, a first lower module disposed below the first hollow fiber membrane module and the first collection module, and a hole communicating with the outlet of the first hollow fiber membrane module And a first upper module disposed above the first hollow fiber membrane module and the first collection module.

According to one embodiment, the process water passes through the holes of the first bottom module, the holes of the first collecting module, and the inlet of the first hollow fiber membrane module in order, And may be provided to the inner space of the second hollow fiber membrane module by passing through the outlets of the first hollow fiber membrane module and the holes of the first upper module in order.

According to one embodiment, the treated water flows into the internal space of the first hollow fiber membrane module in the opposite direction of gravity and flows in the gravity direction into the internal space of the second hollow fiber membrane module, The hollow fiber membrane module may include an exhaust hole for exhausting the internal space of the second hollow fiber membrane module.

According to one embodiment, the first receiving module may include a bottom surface having a plurality of holes that guide the condensed water condensed in the first separating membrane to a groove of the first collecting module. have.

According to one embodiment, the first hollow fiber membrane module, the first accommodation module, and the first acquisition module may be one body.

According to an exemplary embodiment, any one of the first hollow fiber membrane module and the second hollow fiber membrane module may further include an exhaust unit for exhausting an inner space.

According to one embodiment, the distillation system includes a plurality of distillation modules laterally stacked in a second direction that intersects the first direction, the hollow fiber membrane extending in a first direction, Is characterized in that a plurality of the distillation modules sequentially pass in the second direction and the latent heat generated in the course of condensation of the steam flowing into the hollow fiber membrane from the treated water flows in the second direction To the adjacent distillation module.

According to one embodiment, by the latent heat generated during condensation of the vapor introduced into the hollow fiber membrane from the treated water, the treated water in the distillation module adjacent in the second direction can be reheated.

According to an embodiment, the condensed water condensed in the vapor introduced into the hollow fiber membrane may be collected and collected in the first direction.

In order to solve the above technical problems, the present invention provides a distillation system.

According to one embodiment, the distillation system comprises a first distillation unit into which process water having a first temperature is introduced and which produces steam from the process water, a first distillation unit that receives steam from the first distillation unit and produces condensed water, The treated water having a second temperature lower than the first temperature is introduced from the first distillation unit and the latent heat generated in the process of generating the condensed water in the first condensation and latent heat transfer unit is received A second distillation section for heating the treated water to have a third temperature higher than the second temperature and producing steam from the treated water having the third temperature and a second distillation section for receiving the steam from the second distillation section And a second condensing and latent heat transfer portion for producing condensed water.

According to one embodiment, the third temperature may be lower than the first temperature.

A distillation system according to an embodiment of the present invention includes a first hollow fiber membrane module into which treated water flows and having a first hollow fiber membrane, a first separation membrane that condenses the vapor introduced into the first hollow fiber membrane from the treatment water, A first hollow fiber membrane module that receives the treated water from the hollow fiber membrane module, receives the latent heat generated in the process of condensing the steam in the first separation membrane, heats the treated water, And a second hollow fiber membrane module having a module. The latent heat generated in the process of condensing the steam heats the treated water again, and the latent heat can be easily recovered. As a result, a distillation system with improved heat efficiency and desalination efficiency can be provided.

1 is a block diagram for explaining the principle of latent heat recovery in a distillation system according to an embodiment of the present invention.
2 is a perspective view illustrating a distillation system according to an embodiment of the present invention.
3 to 5 are perspective views illustrating a first type hollow fiber membrane module included in a distillation system according to an embodiment of the present invention.
6 to 8 are perspective views illustrating a second type hollow fire module included in a distillation system according to an embodiment of the present invention.
2 is a perspective view illustrating a distillation system according to an embodiment of the present invention.
3 to 5 are perspective views illustrating a first type hollow fiber membrane module included in a distillation system according to an embodiment of the present invention.
6 to 8 are perspective views illustrating a second type hollow fire module included in a distillation system according to an embodiment of the present invention.
9 is a conceptual diagram for explaining the flow of treated water, the flow of condensed water, the flow of steam, and the transfer of latent heat in the distillation system according to the embodiment of the present invention.
10 is an exploded perspective view for explaining the flow of treated water, the flow of condensed water, the flow of steam, and the transfer of latent heat in the distillation system according to the embodiment of the present invention.
11 is a view for explaining the flow of condensed water produced by the distillation system according to the embodiment of the present invention.
12 is a view for explaining a distillation system facility including a distillation system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of 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 thicknesses of the films and regions are exaggerated for an effective explanation of the technical content.

Also, while the terms first, second, third, etc. in the various embodiments of the present disclosure are used to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. Thus, what is referred to as a first component in any one embodiment may be referred to as a second component in another embodiment. Each embodiment described and exemplified herein also includes its complementary embodiment. Also, in this specification, 'and / or' are used to include at least one of the front and rear components.

The singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms such as " comprises "or" having "are intended to specify the presence of stated features, integers, Should not be understood to exclude the presence or addition of one or more other elements, elements, or combinations thereof. Also, in this specification, the term "connection " is used to include both indirectly connecting and directly connecting a plurality of components.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram for explaining the principle of latent heat recovery in a distillation system according to an embodiment of the present invention.

1, a distillation system 10 according to an embodiment of the present invention includes first to fourth distillation units 12, 14, 16, 18, and first to third condensing and latent heat transmission units 22, 24, 26).

The treatment water 30 having the first temperature may be introduced into the first distillation unit 12. The first distillation section 12 can produce the steam V from the treated water 30 having the first temperature.

The steam (V) produced in the first distillation section (12) can be transferred to the first condensation and latent heat transfer section (22). The first condensing and latent heat transfer part 22 may receive the steam V generated from the first distillation part 12 to produce condensed water.

The second distillation unit 14 may receive the treated water 30 from the first distillation unit 12. As described above, the steam (V) is produced from the treated water (30) in the first distillation section (12) and the treated water (30) introduced into the second distillation section (14) 1 < / RTI > temperature. The second distillation unit 14 may receive latent heat (LH) generated during the production of the condensed water in the first condensation and latent heat transmission unit 22. [ Thus, in the second distillation section 14, the treated water 30 having the second temperature can be heated to have a third temperature higher than the second temperature. The second distillation section 14 can produce the steam V from the treated water 30 having the third temperature.

The steam (V) produced in the second distillation unit (14) may be transferred to the second condensation and latent heat transmission unit (24). The second condensation and latent heat transfer unit 24 may receive the steam V generated from the second distillation unit 22 to produce condensed water.

The third distillation unit 16 may receive the treatment water 30 having a fourth temperature lower than the third temperature from the second distillation unit 14. [ In addition, as described above, when receiving the latent heat (LH) generated in the process of producing the condensed water from the second condensation and latent heat transmission portion (24), the treated water (30) 5, and produce steam (V) from the treated water (30) having the fifth temperature.

The steam V produced in the third distillation unit 16 may be transferred to the third condensation and latent heat transfer unit 26 and the third condensation and latent heat transfer unit 26 may produce condensed water.

The fourth distillation unit 18 may receive the treatment water 30 having a sixth temperature lower than the fifth temperature from the third distillation unit 16. [ In addition, as described above, when receiving the latent heat LH generated in the process of producing the condensed water from the third condensation and latent heat transmission portion 26, the treated water 30 having the sixth temperature 7, and produce steam (V) from the treated water (30) having the seventh temperature.

According to an embodiment of the present invention, the first to fourth distillation units 12, 14, 16 and 18 are provided, and the process water 30 is supplied to the first to fourth distillation units 12, 14, 16, 18), the steam (V) is produced, and the steam (V) is condensed to produce condensed water (for example, fresh water). The latent heat LH generated in the process of condensing the steam V produced by the first to fourth distillation units 12, 14, 16 and 18 is not wasted, 30 to the distillation section located at the next stage in the flow direction, and the treated water 30 can be reheated by the latent heat LH. Accordingly, the first to fourth distillation units 12, 14, 16, and 18 can easily produce the steam V from the reheated treated water 30, whereby the desalination efficiency and the energy efficiency This improved distillation system can be provided.

It is described and illustrated in FIG. 1 that four distillation sections are provided and three condensation and latent heat transfer sections are provided. However, the present invention is not limited thereto and may be applied to two or three distillation sections, five or more distillation sections, It is apparent to those skilled in the art that the delivery portion, four or more condensation and latent heat transfer portions may be provided.

According to one embodiment, the distillation system described with reference to FIG. 1 can be applied to a hollow fiber membrane distillation system including a hollow fiber membrane. 2 to 6, a distillation system to which the latent heat recovery principle of the distillation system described with reference to FIG. 1 is applied will be described in more detail.

FIG. 2 is a perspective view for explaining a distillation system according to an embodiment of the present invention, FIGS. 3 to 5 are perspective views illustrating a first type hollow fiber membrane module included in a distillation system according to an embodiment of the present invention, 6 to 8 are perspective views illustrating a second type hollow fire module included in a distillation system according to an embodiment of the present invention.

2 to 8, a distillation system according to an embodiment of the present invention includes first to fifth distillation modules 110 to 150, first to fourth separators 210 to 210, 240).

The first to fifth distillation modules 110 to 150 may be laterally stacked, as shown in FIG. Alternatively, according to another embodiment, unlike the one shown in FIG. 1, the first to fifth distillation modules 110 to 150 may be vertically stacked.

The first to fifth distillation modules 110 to 150 may include first to fifth hollow fiber modules 110a to 150a, first to fifth accommodation modules First through fifth collect modules 110c through 150c, first through fifth upper modules 110U through 150U and first through fifth lower modules 110L through 150L Respectively. More specifically, the first to fifth distillation modules 110 to 150 may have the same configuration and configuration, except for the exhaust section described later. Specific configurations of the first to fifth distillation modules 110 to 150 will be described with reference to Figs. 3 to 5. Fig. In order to avoid duplication of description, the shape of the first distillation module 110 is exemplarily described.

The first distillation module 110 includes a first hollow fiber membrane module 110a having a plurality of hollow fiber membranes 112, a first receiving module 110b disposed on one side of the first hollow fiber membrane module 110a, A first collecting module 110c disposed below the first receiving module 110b and a second collecting module 110c disposed below the first collecting module 110c, A first hollow fiber membrane module 110L and a first upper module 110U disposed on the first hollow fiber membrane module 110a and the first receiving module 110b. According to one embodiment, the first hollow fiber membrane module 110a, the receiving module 110b, the collecting module 110c, the first lower module 110L, and the first upper module 110U are integrally formed (one body). According to one embodiment, in the first direction, the first hollow fiber membrane module 110a, the first receiving module 110b, the first collecting module 110c, and the first lower module 110L, And the first upper module 110U may have the same length.

The first lower module 110L may include a hole 112L into which the process water is introduced. The hole 112L may extend in a second direction perpendicular to the first direction and extend upward (a third direction perpendicular to the first direction and the second direction) toward the first collecting module 110c. In other words, the hole 112L of the first lower module 110L may have a shape of ".". The hole 112L of the first lower module 110L may communicate with the hole 112c of the first collecting module 110c. Alternatively, unlike the drawing, the hole 112L of the first lower module 110L passes through the first lower module 110L in the third direction, and the first collecting module 110c, Can be communicated.

The first hollow fiber membrane module 110a includes an inlet 114a through which process water flows into an inner space of the first hollow fiber membrane module 110a, The first hollow fiber membrane 112 extending in the first direction in the first hollow fiber membrane module 110a and an outlet 112a through which the treated water flows out of the internal space of the first hollow fiber membrane module 110a.

The inlet 114a may be defined by the hole 112L of the first lower module 110L and the hole 112c of the first collecting module 110c disposed below the first distillation module 110, And may be connected to the inner space of the first hollow fiber membrane module 110a. The treated water can be introduced into the inner space of the first hollow fiber membrane module 110a through the inlet 114a. According to one embodiment, the treated water may be seawater.

The plurality of first hollow fiber membranes 115 may extend in parallel in the first direction. In other words, the plurality of first hollow fiber membranes 115 may be parallel to each other. Both ends of the plurality of first hollow fiber membranes 115 may be open. Accordingly, when steam flows into the first hollow fiber membrane 115 from the treated water flowing through the inlet 114a, the steam in the first hollow fiber membrane 115 flows into the first hollow fiber membrane 115, Can be transmitted to the first receiving module 110b through both ends of the first receiving module 115. According to one embodiment, the first hollow fiber membrane 115 is formed of a polymer membrane such as PTFE (polytetrafluoroethylene), PP (polypropylene), PVDF (polyvinylidene fluoride), PE (polyethylene) .

The treated water flowing through the inlet 114a fills the inner space of the first hollow fiber membrane module 110a and flows into the hole 112U of the first upper module 110U through the outlet 112a, Lt; / RTI >

The hole 112U of the first upper module 110U may extend in the third direction and may extend in the second direction toward the second distillation module 120. [ In other words, the hole 112U of the first upper module 110U may have a shape of "H".

The first collecting module 110c may support the first hollow fiber membrane module 110a and the first receiving module 110b. The first collecting module 100c may include a groove GR extending in the second direction intersecting with the first direction in which the plurality of first hollow fiber membranes 115 extend.

The steam introduced into the first hollow fiber membrane 115 is transferred to the first receiving module 110b through both open ends of the hollow fiber membrane 115 so that the first receiving module 110b Can be accommodated. The receiving module 110b may include a plurality of holes 112b connected to the first collecting module 100c.

According to one embodiment, chambers and gaskets are mounted at both ends (in the first direction) of the first hollow fiber membrane module 110a, the first receiving module 110b, and the first collecting module 110c . Accordingly, the steam in the first hollow fiber membrane 115 can be easily transferred into the first receiving module 110b without flowing out to the outside.

As described above, the first to fifth distillation modules 110 to 150 include the first to fifth hollow fiber membrane modules 110a to 150a, which are identical to each other, Modules 110b to 150b, the first to fifth collecting modules 110c to 150c, the first to fifth upper modules 110U to 150U, and the first to fifth lower modules 110L To 150L), which can be classified as a first type distillation module and a second type distillation module. The first distillation module 110, the third distillation module 130, and the third distillation module 130, in which process water flows upwardly (in the opposite direction of gravity) into the inner space of the distillation module, as described later with reference to FIGS. 9 to 11, , And the fifth distillation module (150) is classified as the first type distillation module and includes a second distillation module (120) in which process water flows into the inner space of the distillation module from top to bottom (in the gravity direction) The distillation module 140 may be classified as the second type distillation module.

The first distillation module 110, the third distillation module 130, and the fourth distillation module 150 corresponding to the first type distillation module are illustrated in FIGS. 3 through 5 A receiving module, a collecting module, a lower module, and an upper module, as is known in the art.

The configuration of the second distillation module 120 and the fourth distillation module 140 corresponding to the second type distillation module will be described with reference to FIG. 6 to FIG. In order to avoid duplication of description, the shape of the second distillation module 120 is exemplarily described.

6 to 8, the second distillation module 120 includes a second hollow fiber membrane module 120a, a second receiving module 120b, a second collecting module 120c, A first upper module 120L, and a second upper module 120U.

The second upper module 120U may include a hole 122U into which the process water is introduced from the first distillation module 110. [ The hole 122U may extend in the second direction and extend downward toward the second hollow fiber membrane module 120a. In other words, the hole 122U of the first upper module 120U may have a shape of ".".

The second upper module 120U includes an exhaust hole 126U penetrating the second upper module 120U and communicating with the exhaust hole 126a connected to the inner space of the second hollow fiber membrane module 120a can do.

The second hollow fiber membrane module 120a includes an inlet 122a through which the treated water flows into the inner space of the second hollow fiber membrane module 120a from the second upper module 120U, 120a extending in the first direction within the inner space of the first hollow fiber membrane module 120a, and a plurality of second hollow fibers 125 extending in the first direction within the inner space of the second hollow fiber membrane module 120a, ).

The outlet 124a is connected to the hole 122c of the second collecting module 120c disposed below the second distillation module 120 and the hole 122L of the second lower module 120L May be communicated to the third distillation module (130). The hole 122L of the second lower module 120L may have a "?" Shape.

As described above, the second type distillation module may further include exhaust holes 126a and 126U for exhausting the inner space of the hollow fiber membrane module 120a. One end of each of the exhaust holes 126a and 126U is connected to the inner space of the hollow fiber membrane module 120a and the other end of the exhaust holes 126a and 126U is connected to the outside, The air in the inner space of the hollow fiber membrane module 120a can be discharged to the outside. Accordingly, even if the process water is supplied into the inner space of the hollow fiber membrane module 120a in the gravity direction, the inner space of the hollow fiber membrane module 120a can easily be filled with the process water.

The first to fourth separation membranes 210 to 240 may be disposed between the first to fourth distillation modules 110 to 140. One side of the first to fourth receiving modules 110b to 140b adjacent to the first to fourth separation membranes 210 to 240 may be opened. In other words, the vapors in the first to fourth receiving modules 110b to 140b may be directly contacted with the first to fourth separators 210 to 240, The one side surfaces of the receiving modules 110b to 140b may be coupled to the first to fourth separation membranes 210 to 240, respectively. Accordingly, the vapors in the first to fourth receiving modules 110b to 140b can be easily condensed in the first to fourth separating membranes 210 to 240.

One side of the second through fifth hollow fiber membrane modules 120a through 150a adjacent to the first through fourth separation membranes 210 through 240 may be opened. In other words, the treated water in the inner space of the second to fifth hollow fiber membrane modules 120a to 150a is directly contacted to the first to fourth separation membranes 210 to 240, The one side surfaces of the fifth hollow fiber membrane modules 120a to 150a may be coupled to the first to fourth separation membranes 210 to 240, respectively. Accordingly, as described later, latent heat generated in the process of condensing the vapor in the receiving modules 110b to 150b in the first to fourth separating membranes 210 to 240 can be easily performed, Lt; / RTI >

According to one embodiment, the first to fourth separation membranes 210 to 240 may be formed of a metal foil. For example, the first to fourth separation membranes 210 to 240 may be formed of aluminum foil, stainless steel foil, magnesium alloy foil, or the like.

As described above, according to the embodiment of the present invention, the first to fifth distillation modules 110 to 150 may include the same type of hollow fiber membrane module, the receiving module, and the collecting module. In other words, a multi-stage distillation system in which manufacturing costs and manufacturing processes are simplified by using distillation modules having the same shape as each other can be provided.

Hereinafter, the flow of treated water, the flow of condensed water, the flow of steam, and the latent heat transfer process in the distillation system according to the above-described embodiment of the present invention will be described with reference to Figs. 9 to 11. Fig.

FIG. 9 is a conceptual view for explaining the flow of treated water, the flow of condensed water, the flow of steam, and the transfer of latent heat in the distillation system according to the embodiment of the present invention. FIG. 11 is an exploded perspective view for explaining the flow of treated water, the flow of condensed water, the flow of vapor, and the transfer of latent heat, and FIG. 11 is a view for explaining the flow of condensed water produced by the distillation system according to the embodiment of the present invention FIG.

Referring to FIGS. 9 to 11, the treatment water 160 may be introduced into the first hollow fiber membrane module 110a of the first distillation module 110. The treated water 160 may be introduced into the inner space of the first hollow fiber membrane module 110a.

According to one embodiment, the treated water 160 may be introduced into the first distillation module 110 in a state where the temperature is raised by a heat source (for example, steam). Alternatively, according to another embodiment, the treated water 160 flowing into the inner space of the first hollow fiber membrane module 110a may be heated by receiving heat from the heat source.

Steam can be introduced into the hollow fiber membrane of the first hollow fiber membrane module 110a from the treated water 160. [ The steam (V) introduced into the hollow fiber membrane of the first hollow fiber membrane module 110a can be transferred from the both ends of the opened hollow fiber membrane to the first receiving module 110b. The vapor (V) delivered to the first receiving module (110b) may be condensed in the first separating membrane (210) to generate condensed water (W). The condensate W may be collected in the grooves (GR in FIG. 3) of the first collection module 110c through the holes 112b described with reference to FIG.

3 to 5, the treatment water 160 flowing into the inner space of the first hollow fiber membrane module 110a flows into the second hollow fiber membrane module 110a of the second distillation module 120, And may be introduced into the inner space of the heat exchanger 120a. Further, a latent heat (LH) may be generated in the process of condensing the vapor (V) in the first separation membrane 210 to be condensed water. The first separation membrane 210 can be directly contacted with and coupled to one side of the opened second hollow fiber membrane module 120a so that the latent heat LH generated in the first separation membrane 210, Is transferred to the treatment water (160) in the inner space of the second hollow fiber membrane module (120a), and the treatment water (160) can be reheated. Accordingly, steam can easily flow from the reheated treated water 160 into the hollow fiber membrane in the second hollow fiber membrane module 120a.

The steam (V) introduced into the hollow fiber membrane of the second hollow fiber membrane module 120a may be transmitted to the second receiving module 120b. The vapor (V) delivered to the second receiving module 120b may be condensed in the second separating membrane 220 to generate condensed water (W). The condensed water W may be collected in the groove of the second collection module 120c.

The treated water 160 flowing into the inner space of the second hollow fiber membrane module 120a may be introduced into the inner space of the third hollow fiber membrane module 130a of the third distillation module 130. The latent heat LH generated in the process of condensing the vapor V in the second separation membrane 220 into condensed water is supplied to the treatment water 160 in the inner space of the third hollow fiber membrane module 130a And the process water 160 can be reheated. Accordingly, steam can easily flow from the reheated treated water 160 into the hollow fiber membrane in the third hollow fiber membrane module 130a.

The steam (V) introduced into the hollow fiber membrane of the third hollow fiber membrane module 130a may be transferred to the third receiving module 130b. The steam V delivered to the third receiving module 130b may be condensed in the third separating membrane 230 to generate condensed water W. [ The condensed water W may be collected in the groove of the third collection module 130c.

The treated water 160 flowing into the inner space of the third hollow fiber membrane module 130a may be introduced into the inner space of the fourth hollow fiber membrane module 140a of the fourth distillation module 140. [ The latent heat LH generated in the process of condensing the vapor V in the third separation membrane 230 into condensed water is supplied to the treatment water 160 in the inner space of the fourth hollow fiber membrane module 140a And the treatment water 140 can be reheated. Accordingly, steam can easily flow from the reheated treated water 160 into the hollow fiber membrane in the fourth hollow fiber membrane module 140a.

The steam V introduced into the hollow fiber membrane of the fourth hollow fiber membrane module 140a may be transferred to the fourth receiving module 140b. The vapor (V) delivered to the fourth receiving module (140b) may be condensed in the fourth separating membrane (240) to generate condensed water (W). The condensed water W may be collected in the groove of the fourth collection module 140c.

The treated water 160 flowing into the inner space of the fourth hollow fiber membrane module 140a may be introduced into the inner space of the fifth hollow fiber membrane module 150a of the fifth distillation module 150. The latent heat LH generated in the process of condensing the steam V in the fourth separation membrane 240 to be condensed water is supplied to the treatment water 160 in the inner space of the fifth hollow fiber membrane module 150a And the treatment water 140 can be reheated. Accordingly, steam can easily flow from the reheated treated water 160 into the hollow fiber membrane in the fifth hollow fiber membrane module 150a.

The steam (V) introduced into the hollow fiber membrane of the fifth hollow fiber membrane module 150a may be transferred to the fifth receiving module 150b. The steam V delivered to the fifth receiving module 150b may be delivered to a condenser or the like.

The first to fourth separation membranes 210 to 240 may have first through fourth through holes 212H to 242H at positions corresponding to the grooves of the first to fifth collection modules 110c to 150c, . The condensed water W collected in the grooves of the first to fifth collecting modules 110c to 150c of the first to fifth distillation modules 110 to 150 is collected in the first to fifth collecting modules 110c to 150c, Passes through the first to fourth through holes 212H to 242H of the fourth separation membranes 210 to 240, and is moved in the first direction and collected.

As described above, the temperatures of the treated water 160 flowing into the first to fifth distillation modules 110 to 150 are different from each other. As a result, the first to fifth distillation modules 110 to 150, And the amount of the condensed water W produced from the steam V may be different. Accordingly, the pressures in the grooves of the first to fifth collection modules 110c to 150c may be different from each other. According to the embodiment of the present invention, in order to allow the condensed water W accommodated in the grooves of the first to fifth collection modules 110c to 150c having different pressures to flow easily in the first direction, The sizes of the first to fourth through holes 212H to 242H of the first to fourth separation membranes 210 to 240 may be gradually reduced.

According to an embodiment of the present invention, the hollow fiber membrane may extend in the first direction, and the first to fifth distillation modules 110 to 150 may be stacked in the second direction intersecting the first direction The treatment water 160 passes through the first to fifth distillation modules 110 to 150 in the second direction in order, and flows into the first to fifth distillation modules 110 to 150 The temperature of the process water 160 can be reduced as the process proceeds.

However, according to the embodiment of the present invention, as described above, the steam introduced into the hollow fiber membrane from the treated water 160 is condensed in the first to fourth separation membranes 210 to 240 The latent heat LH can be transferred to the distillation module adjacent to the second direction, that is, in the direction in which the process water 160 flows. Accordingly, the treated water 160 in the distillation module adjacent to the second direction is reheated by the latent heat LH, so that the latent heat LH can be recovered without being wasted, 160 can easily flow into the hollow fiber membrane to improve the heat efficiency and desalination efficiency.

Hereinafter, the distillation system equipment to which the distillation system according to the embodiment of the present invention described above is applied will be described.

12 is a view for explaining a distillation system facility including a distillation system according to an embodiment of the present invention.

Referring to Figure 12, a distillation system facility 1000 includes a plurality of distillation systems 1000, including distillation modules 510 to 560 and separators 515 to 555, according to embodiments of the present invention described with reference to Figures 1-11 A distillation system, a thermal vapor compressor (TVC) 700, a preheater 750, and a condenser 800.

The source vapor 710 flowing into the TVC 700 may be delivered to the preheater 750. The preheater 750 receives the treatment water 605 from the condenser 800 and receives the treatment water 610 from the distillation system to remove the treatment water heated by the source steam 710 610).

The treated water 610 heated in the preheater 750 is transferred to the distillation system and is introduced into the first distillation module 510 to the sixth distillation module 510, The condensed water 620 is condensed in the separation membranes 515 to 555, so that the condensed water 620 can be generated.

The treated water 610 remaining in the sixth distillation module 560 performing the final distillation process of the distillation system is introduced into the preheater 750 as described above, the condenser 630 and the TVC 700. [

The condenser 630 receives the raw water 600 from the outside, receives the steam 630 from the distillation system, and conveys the condensed water generated in the process to the outside together with the condensed water 620 generated in the distillation system Can supply.

The distillation system including the distillation modules 510 to 560 and the separation membranes 515 to 555 according to the embodiment of the present invention may be configured such that the steam 630 generated by distilling the treated water 610 is condensed May again be used to heat the treatment water 610. Thereby, a distillation system with improved heat efficiency and distillation efficiency can be provided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: Distillation system
12 to 18: First to fourth distillation sections
22 to 26: first to third condensing and latent heat transfer parts
110 to 150: first to fifth distillation modules
110a to 150a: first to fifth hollow fiber membrane modules
110b to 150b: first to fifth accommodation modules
110c to 150c: first to fifth collecting modules
110L to 150L: first to fifth lower modules
110U to 150U: first to fifth upper modules
115: hollow fiber membrane
160: Processed water
210 to 240: First to fourth separators
GR: Groove
LH: latent heat
V: steam
W: Condensate

Claims (14)

A first hollow fiber membrane module including a first hollow fiber membrane extending in a first direction in an inner space into which the treatment water flows;
A first receiving module for receiving the steam introduced into the first hollow fiber membrane from the treated water;
A first separation membrane in which the vapor in the first receiving module is condensed;
A first collection module disposed below the first hollow fiber membrane module and the first receiving module and having a groove in which condensed condensed water in the first separating membrane is collected; And
A first hollow fiber membrane module that receives the treated water from the first hollow fiber membrane module and receives latent heat generated during condensation of steam in the first receiving module from the first separation membrane to increase the temperature of the treated water, And a second hollow fiber membrane module extending in the first direction in the inner space into which the process water flows.
The method according to claim 1,
A second receiving module for receiving the steam introduced into the second hollow fiber membrane from the treated water;
A second separation membrane in which the vapor in the second receiving module is condensed; And
Receiving the treated water from the second hollow fiber membrane module, receiving latent heat generated during condensation of steam in the second receiving module from the second separation membrane to increase the temperature of the treated water, Further comprising a third hollow fiber membrane module extending in the first direction within the inner space.
The method according to claim 1,
The bottom surface of the inner space of the first hollow fiber membrane module includes an inlet through which the treated water flows,
Wherein an upper surface of the inner space of the first hollow fiber membrane module includes an outlet through which the treated water flows,
Wherein the first hollow fiber membrane extends in a direction parallel to the bottom surface and the top surface of the inner space of the first hollow fiber membrane module.
delete The method of claim 3,
Wherein the first collecting module includes a hole communicating with the inlet of the first hollow fiber membrane module,
A first lower module disposed below the first hollow fiber membrane module and the first collection module, the first lower module having a hole communicating with the inlet of the first hollow fiber membrane module and the hole of the first collection module; And
Further comprising a first upper module having a hole communicating with said outlet of said first hollow fiber membrane module and disposed above said first hollow fiber membrane module and said first collection module.
6. The method of claim 5,
Wherein the treated water is passed through the hole of the first lower module, the hole of the first collecting module, and the inlet of the first hollow fiber membrane module in order to provide the inner space of the first hollow fiber membrane module And,
The outlet of the first hollow fiber membrane module and the hole of the first upper module, and is provided to the inner space of the second hollow fiber membrane module.
The method according to claim 6,
The treated water flows into the internal space of the first hollow fiber membrane module in the direction opposite to gravity and flows in the gravity direction into the internal space of the second hollow fiber membrane module,
Wherein the second hollow fiber membrane module includes an exhaust hole for exhausting the inner space of the second hollow fiber membrane module.
The method according to claim 1,
Wherein the first receiving module comprises a bottom surface having a plurality of holes for guiding the condensed water condensed in the first separating membrane to a groove of the first collecting module.
9. The method of claim 8,
Wherein the first hollow fiber membrane module, the first receiving module, and the first collecting module comprise one body.
A plurality of distillation modules including a hollow fiber membrane extending in a first direction and laterally stacked in a second direction intersecting the first direction,
The treated water sequentially passes a plurality of the distillation modules in the second direction,
The latent heat generated in the process of condensing the vapor introduced into the hollow fiber membrane from the treated water is transferred to the distillation module adjacent in the second direction among the plurality of the distillation modules,
Wherein the condensed water condensed with the vapor introduced into the hollow fiber membrane is collected in a collection module having a groove disposed in a lower portion of each of the plurality of the distillation modules while being moved in the first direction.
11. The method of claim 10,
Wherein the treatment water in the distillation module adjacent to the distillation module in the second direction is reheated by the latent heat generated during condensation of the vapor introduced into the hollow fiber membrane from the treated water.
delete A first distillation unit into which process water having a first temperature is introduced and which produces steam from the process water;
A first condensing and latent heat transfer unit for receiving steam from the first distillation unit to produce condensed water;
The process water having a second temperature lower than the first temperature is introduced from the first distillation section and the latent heat generated in the process of generating the condensed water at the first condensation and latent heat transmission section is received, A second distillation section that heats the treated water to have a third temperature higher than the second temperature and produces steam from the treated water having the third temperature;
A second condensing and latent heat transfer unit for receiving steam from the second distillation unit to produce condensed water; And
Wherein the first condensing and latent heat transfer part and the second condensing and latent heat transfer part comprise a grooved collecting part for collecting the condensed water.
14. The method of claim 13,
Wherein the third temperature is lower than the first temperature.
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