WO2019117479A1 - 공급 스페이서 및 이를 포함하는 역삼투압 필터 모듈 - Google Patents
공급 스페이서 및 이를 포함하는 역삼투압 필터 모듈 Download PDFInfo
- Publication number
- WO2019117479A1 WO2019117479A1 PCT/KR2018/013841 KR2018013841W WO2019117479A1 WO 2019117479 A1 WO2019117479 A1 WO 2019117479A1 KR 2018013841 W KR2018013841 W KR 2018013841W WO 2019117479 A1 WO2019117479 A1 WO 2019117479A1
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- WIPO (PCT)
- Prior art keywords
- reverse osmosis
- sets
- supply
- warp
- diameter
- Prior art date
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Classifications
-
- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
-
- 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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- 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
Definitions
- the present invention relates to a feed spacer and a reverse osmosis filter module including the feed spacer, and more particularly, to a feed- Recovery area is separated so as to provide multifunctional supply spacers and reverse osmosis filter modules comprising the same.
- the reverse osmosis membrane permeated by this reverse osmosis membrane has been used in a variety of fields such as sterile water for medical use, purified water for population dialysis, or water for the production of semiconductors in the electronic industry, since it becomes pure water or nearly pure water.
- the two solutions having the difference in reverse osmosis concentration are separated into semi-permeable membranes, and after a certain time, the solution having a low concentration moves to the higher concentration side to generate a constant water level difference, which is called osmotic phenomenon.
- the difference in water level that occurs during this process is called reverse osmosis.
- Such a reverse osmosis filter module comprises a center tube, a feed spacer, an RO membrane, a tricot filtration furnace, and the like.
- the supply spacers serve as passages through which the raw water flows.
- the supply spacers are formed into a net shape.
- a differential pressure is generated due to a flow disturbance caused by the feed spacer, which results in an increase in energy cost.
- Concentration polarization is inevitably generated near the reverse osmosis membrane by the water permeation flux. As the phenomenon becomes worse, the osmotic pressure increases near the reverse osmosis membrane and the water permeability decreases.
- the present invention has been conceived to solve the above-mentioned problems, and an object of the present invention is to provide an apparatus and a method for manufacturing a semiconductor device, which are capable of forming a region having a different crossing angle in one supply spacer, To thereby provide a feed spacer structure in which a region for reducing the differential pressure and a region for increasing the recovery rate are simultaneously formed.
- a feed spacer includes a first set in which a plurality of warp strands are positioned in parallel; And a second set in which a plurality of warp yarns intersect and are disposed in parallel with the first set, wherein the crossing angles of the first and second sets increase along the flow direction of the raw water.
- the intersecting angles of the first and second sets increase stepwise along the flow direction of the raw water.
- the feed spacer is characterized in that the diameter of the non-intersecting point is different from the intersection of the first and second sets.
- the feed spacer is characterized in that the difference in diameter of the intersection of the first and second sets and the non-intersection point along the flow direction of the raw water is reduced.
- the feed spacer is formed with a first end and a second end, wherein the first end is characterized by a smaller crossing angle of the first set and the second set than the second end.
- the distance between the intersections of the first and second sets is characterized in that the second end is shorter than the first end.
- the feed spacer is characterized in that the diameter difference of the first end along the flow direction of the raw water is larger than the diameter difference of the second end.
- the warp diameters of the intersections of the first and second sets are the same.
- the warp diameter of the first and second sets of non-intersecting points is characterized in that the warp of the first set is thinner than the warp of the second set.
- the reverse osmosis filter module includes the supply spacer.
- the reverse osmosis filter module comprises: a tube including an opening for receiving permeate therethrough; And one or more reverse osmosis membranes extending outwardly from the tubes and wound around the tubes, wherein the spacers contact the one or more reverse osmosis membranes and are wound around the tubes.
- the cross-sectional area of the flow path is increased to reduce the pressure difference, So that a plurality of effects are generated using one supply spacer.
- FIG. 1 is a top view of a supply spacer according to one embodiment of the present invention.
- FIG. 2 is a perspective view of a feed spacer according to one embodiment of the present invention.
- Fig. 3 (a) is an enlarged view of the warp in Fig. 1
- Fig. 3 (b) is an enlarged view of the warp in Fig.
- FIG. 1 is a plan view of a supply spacer according to an embodiment of the present invention
- FIG. 2 is a perspective view of a supply spacer according to an embodiment of the present invention
- FIG. 3 (a) is a perspective view of a supply spacer according to an embodiment of the present invention
- FIG. 3 (a) is a perspective view of a supply spacer according to an embodiment of the present invention
- FIG. 3 (b) is an enlarged view of the warp in the portion B in Fig.
- the feed spacer according to the present invention may be constituted of a first set and a second set in which a plurality of warp strands are positioned in parallel.
- the first set may have one or more warps positioned in parallel, wherein the warp yarns may be positioned obliquely to the direction of the enemy.
- the second set can also be positioned more than one warp in parallel and positioned to intersect the first set.
- the second set may be positioned opposite the first set and the tilting direction so that the first set and the second set 10, 20 may be provided in a lattice shape.
- the first set 10 may be positioned at an angle of 10 ° to 80 ° from the flow direction of the raw water
- the second set 20 may be positioned at a slope of 100 ° to 170 ° from the flow direction of the raw water.
- the warp of the second set 20 can be positioned at an angle of 120 from the flow direction of the raw water.
- the sectional area of the flow path formed by the warp decreases and the laminar flow velocity gradient does not occur in the central portion of the supply spacer, If the angle is more than 80, the cross-sectional area of the flow passage may be reduced and the flow of the raw water may actively occur in the up and down direction, thereby increasing the pressure loss.
- the flow path may be formed by a warp constituting each set, and may mean an empty space between the reverse osmosis membrane and each set, which are located at the upper and lower portions of the supply spacers.
- the supply spacers according to the present invention may have different angles at which the first and second sets 10 and 20 intersect along the flow direction of the raw water. More specifically, the area A for reducing the differential pressure and the area B for increasing the recovery may be separated according to the angle between the first and second sets. It should be noted that the area for reducing the differential pressure and the area for increasing the recovery rate are not limited as long as they can perform their functions.
- the area A for reducing the differential pressure can be located at the first contact with the raw water, and the area B for increasing the recovery rate along the flow direction of the raw water can be located.
- the crossing angles of the first and second sets 10, 20 along the flow direction of the raw water can increase along the flow direction of the raw water, and the angle increase can be made stepwise. Therefore, the supply space according to the present invention can be formed in two stages, and the region (A, first stage) in which the differential pressure is reduced can be formed in a region B (where the first and second set intersection angles a 1 ) It may be smaller than the intersection angle (a 2) of the second stage).
- the area to reduce the pressure difference (A, first stage) is the distance between the intersection of the first and the distance between the intersection points which the second set is crossed formation area (B, the second stage) to (d 1) to increase the recovery rate (d 2 ). That is, the region where the differential pressure is decreased based on the same area can be formed such that the density of the intersection is low and the density of the intersection is high in the region where the recovery rate is increased.
- the feed spacers according to the present invention can be provided with different diameter ratios of the warp yarns constituting the first and second sets depending on the region and the diameter of the intersection of the first and second sets 10 and 20 and the non- Can be provided differently.
- the warp yarns forming the first and second sets 10, 20 can be formed asymmetrically in thickness, because the protruding portions are formed in the middle of the warp yarns to increase the diameter of the warp yarns , It can mean that the diameter of the protruded portion and the protruded portion can be formed asymmetrically.
- the diameter ratio of the warp yarns forming the area A for decreasing the differential pressure may be greater than the diameter ratio of the warp yarns forming the area B for increasing the recovery.
- the difference between the protruding portion diameter W2 and the non-protruding portion diameter W1 of the warp yarns forming the region A for decreasing the differential pressure is the ratio of the protruding portion diameter W2 of the warp portion May be formed larger than the difference between the diameter W2 and the non-protruding portion diameter W1 '. That is, the diameter difference between the intersection point and the non-intersecting point warp along the raw water flow direction can be reduced.
- the supply spacers according to the present invention have the same thickness regardless of the region. That is, the first and second sets 10 and 20 can intersect the protrusions to form the supply spacers.
- the diameter W2 of the protrusions can be formed to be the same in both the area for reducing the differential pressure and the area for increasing the collection ratio have.
- the first and second sets 10 and 20 according to the present invention comprise a protruding portion of the warp forming the first set 10 and a protruding portion of the warp forming the second set 20 By intersecting, the thickness of the supply spacers can be determined. Therefore, the difference in the diameter ratio of the warp yarns forming each region can be controlled by the non-protruding portions W1 and W1 '.
- the feed spacer according to the present invention has an angle a 1 between the first and second sets 10, 20, a 2 ) By adjusting the diameter and the ratio of the diameter of the warp, it is possible to generate a plurality of functions and effects by using one supply spacer.
- the area (A) to reduce the differential pressure is the diameter difference between the first and the projecting portion reduces through the angle (a 1) 2 sets (10, 20) (W2) and the non-protruding portion (W1)
- the flow path of the supply spacers can be increased. Accordingly, when the raw water is introduced through the supply spacers, the supply spacers do not interfere with the flow of the raw water due to the wide flow path, so that the differential pressure may be reduced.
- By reducing the generation of differential pressure it is possible to provide a supply spacer that can alleviate concentration polarization of the supply spacers and increase the efficiency of the reverse osmosis filter module.
- the flow path of the supply spacer can be reduced to increase the permeation amount. That is, when raw water is supplied to the supply spacers with the same pressure, the pressure increases when the flow path of the supply spacers is reduced. Therefore, the effect of increasing the recovery rate depending on the increased pressure may occur.
- the non-protruding portion W1 of the area A for reducing the differential pressure and the non-protruding portion W1 'of the area B for increasing the recovery rate may have different diameters. That is, the adjustment of the diameter ratio of the area A in which the differential pressure is reduced and the area B in which the recovery rate is increased can be adjusted by the non-protruding parts W1 and W1 '.
- the height of the supply spacer according to the present invention is characterized in that the area A in which the differential pressure is reduced is equal to the area B in which the recovery rate is increased.
- the reverse osmosis filter module is a component of a membrane separation device that performs the function of purifying water that is actually supplied using the reverse osmosis principle.
- the reverse osmosis filter module may include a reverse osmosis membrane, a supply spacer, a tube containing tricot filtrate water and an opening to receive permeate along its length. Further, a pair of telescoping prevention devices may be further included, but a detailed description thereof will be omitted.
- One or more reverse osmosis membranes use osmotic phenomenon to filter foreign substances contained in water and to perform a role of a flow path so that purified water flows effectively. These one or more reverse osmosis membranes extend outwardly from the tube and are wound around the tube.
- the supply spacers may be provided with the supply spacers according to the present invention described above. More specifically, the feed spacers may be comprised of a first and a second set in which a plurality of warp yarns are positioned in parallel, and may be separated into one or more regions due to differences in angle and diameter ratio between the first and second sets have. Since the supply spacers according to the present invention are the same as the supply spacers described above, a detailed description thereof will be omitted.
- the supply spacers form a passage through which the raw water flows from the outside, and serve to maintain a gap between one reverse osmosis membrane and another reverse osmosis membrane.
- the feed spacer is configured to contact upstream and downstream with one or more reverse osmosis membranes and to be wound around the tube, such as one or more reverse osmosis membranes.
- the material of the supply spacers is not particularly limited, but is preferably composed of any one of polyethylene, polyvinyl chloride, polyester, and polypropylene.
- the tricot filtration water generally has a fabric-like structure and acts as a channel for making purified water flow through the reverse osmosis membrane 10.
- the tricot filtration water generally has a fabric-like structure and acts as a channel for making purified water flow through the reverse osmosis membrane (10).
- the tube is located at the center of the water treatment reverse osmosis filter module and serves as a passage through which the filtered water flows.
- a space (or an opening) of a predetermined size is formed on the outside of the tube so that the filtered water flows in.
- the pores are formed more than one so that the filtered water can be introduced more efficiently.
- Conventional feed spacers were made in the form of a single mesh having the same first and second set angles, the distance of the warp yarns (the distance between the cross points) and the difference in diameter of the warp yarns.
- An embodiment is a feed spacer according to the present invention, which has two different forms in which the set angle, the distance of the warp (the distance between the intersections) and the difference in the diameter of the warp are different.
- Table 1 shows the differential pressure (Pa / ⁇ ⁇ ) with respect to the unit length of each of the first and second stages of the embodiment
- Table 2 shows the differential pressures (Pa / ⁇ ⁇ ) with respect to the unit lengths of each of the comparative example and the example will be.
- the differential pressure (Pa / ⁇ ⁇ ) is reduced by 70% in the region (A, first stage) where the differential pressure is decreased in the embodiment (B, second stage) where the recovery rate is increased.
- the differential pressure per unit length of the comparative example is 0.123 Pa / ⁇ ⁇
- the differential pressure per unit length of the embodiment is 0.105 Pa / ⁇ ⁇ , which is 85% lower than that of the comparative example.
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (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
Description
제1 단 | 제2 단 | |
Pa/㎛ | 0.0144 | 0.0205 |
비교예 | 실시예 | |
Pa/㎛ | 0.123 | 0.105 |
Claims (11)
- 복수의 날실(Strand)이 평행하게 위치되는 제1 세트; 및복수의 날실이 상기 제1 세트와 교차되고 평행하게 위치되는 제2 세트;를 포함하고,상기 제1 및 제2 세트의 교차 각도는,원수의 흐름 방향을 따라 증가하는 것을 특징으로 하는,공급 스페이서.
- 제1항에 있어서,상기 제1 및 제2 세트의 교차 각도는,상기 원수의 흐름 방향을 따라 단계적으로 증가하는 것을 특징으로 하는, 공급 스페이서.
- 제1항에 있어서,상기 공급 스페이서는,상기 제1 및 제2 세트의 교차점과 비교차점의 직경이 상이한 것을 특징으로 하는, 공급 스페이서.
- 제2항에 있어서,상기 공급 스페이서는,원수의 흐름방향을 따라 상기 제1 및 제2 세트의 교차점과 비교차점의 직경 차이가 감소되는 것을 특징으로 하는, 공급 스페이서.
- 제1항에 있어서,상기 공급 스페이서는,제1 단 및 제2 단으로 형성되고, 상기 제1 단은 상기 제2 단보다 상기 제1 세트 및 제2 세트의 교차 각도가 작은 것을 특징으로 하는, 공급 스페이서.
- 제5항에 있어서,상기 제1 및 제2 세트의 교차점 사이의 거리는,상기 제1 단보다 상기 제2 단이 짧은 것을 특징으로 하는, 공급 스페이서.
- 제5항에 있어서,상기 공급 스페이서는,원수의 흐름방향을 따라 상기 제1 단의 직경 차이는 상기 제2 단의 직경 차이보다 큰 것을 특징으로 하는, 공급 스페이서.
- 제1항에 있어서,상기 제1 및 제2 세트의 교차점의 날실 직경이 동일한 것을 특징으로 하는, 역삼투압 필터 모듈.
- 제1항에 있어서,상기 제1 및 제2 세트의 비교차점의 날실 직경은,상기 제1 세트의 날실이 상기 제2 세트의 날실보다 얇은 것을 특징으로 하는, 역삼투압 필터 모듈.
- 제1항 내지 제9항 중 어느 한 항에 따른 공급 스페이서를 포함하는,역삼투압 필터 모듈.
- 제10항에 있어서,상기 역삼투압 필터 모듈은,길이 방향을 따라 투과액으르 수용하는 개구를 포함하는 튜브; 및상기 튜브로부터 외측 방향으로 연장되고 상기 튜브 둘레로 권취되는 하나 이상의 역삼투막;를 포함하고,상기 스페이서는,상기 하나 이상의 역삼투막과 접촉하며, 상기 튜브 둘레로 권취되는 것을 특징으로 하는, 역삼투압 필터 모듈.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880034558.8A CN110662596B (zh) | 2017-12-12 | 2018-11-13 | 供给间隔件和包括其的反渗透过滤模块 |
US16/623,735 US11478750B2 (en) | 2017-12-12 | 2018-11-13 | Feed spacer and reverse osmosis filter module including same |
EP18888465.4A EP3608012B1 (en) | 2017-12-12 | 2018-11-13 | Reverse osmosis filter module with a feedspacer |
JP2019561830A JP6957648B2 (ja) | 2017-12-12 | 2018-11-13 | 供給スペーサおよびこれを含む逆浸透フィルタモジュール |
Applications Claiming Priority (4)
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KR10-2017-0170395 | 2017-12-12 | ||
KR20170170395 | 2017-12-12 | ||
KR1020180137968A KR102230979B1 (ko) | 2017-12-12 | 2018-11-12 | 공급 스페이서 및 이를 포함하는 역삼투압 필터 모듈 |
KR10-2018-0137968 | 2018-11-12 |
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WO2019117479A1 true WO2019117479A1 (ko) | 2019-06-20 |
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PCT/KR2018/013841 WO2019117479A1 (ko) | 2017-12-12 | 2018-11-13 | 공급 스페이서 및 이를 포함하는 역삼투압 필터 모듈 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020169883A1 (en) * | 2019-02-18 | 2020-08-27 | Emp Innovations Oy | Feed spacer for cross-flow membrane element |
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EP3028761A1 (en) * | 2014-12-02 | 2016-06-08 | Center for Research and Technology-Hellas (CERTH) | Membrane modules utilizing innovative geometries of net-type feed spacers for improved performance in separations and spacer-fabrication methods therein |
KR20170038646A (ko) * | 2015-09-30 | 2017-04-07 | 주식회사 엘지화학 | 역삼투압 필터 모듈 |
KR20180137968A (ko) | 2017-06-20 | 2018-12-28 | 배길순 | 생화를 이용한 조화제조방법 |
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EP3028761A1 (en) * | 2014-12-02 | 2016-06-08 | Center for Research and Technology-Hellas (CERTH) | Membrane modules utilizing innovative geometries of net-type feed spacers for improved performance in separations and spacer-fabrication methods therein |
KR20170038646A (ko) * | 2015-09-30 | 2017-04-07 | 주식회사 엘지화학 | 역삼투압 필터 모듈 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020169883A1 (en) * | 2019-02-18 | 2020-08-27 | Emp Innovations Oy | Feed spacer for cross-flow membrane element |
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