WO2022114914A1 - 기체 분리막 운전 방법 - Google Patents
기체 분리막 운전 방법 Download PDFInfo
- Publication number
- WO2022114914A1 WO2022114914A1 PCT/KR2021/017846 KR2021017846W WO2022114914A1 WO 2022114914 A1 WO2022114914 A1 WO 2022114914A1 KR 2021017846 W KR2021017846 W KR 2021017846W WO 2022114914 A1 WO2022114914 A1 WO 2022114914A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- separation membrane
- line
- cleaning
- impermeable
- Prior art date
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 138
- 239000012528 membrane Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000035699 permeability Effects 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 56
- 238000011017 operating method Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 118
- 238000011109 contamination Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012466 permeate Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
-
- 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
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D2053/221—Devices
- B01D2053/223—Devices with hollow tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/10—Nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/50—Specific extra tanks
- B01D2313/502—Concentrate storage tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/02—Forward flushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/14—Use of concentrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
Definitions
- the present invention relates to a gas separation membrane operating method for cleaning a gas separation membrane using the gas separated by the gas separation membrane.
- Gas separation membranes are used to separate various gases, and their use is increasing recently.
- the conventional gas separation membrane technology is focused on membrane manufacturing technology and process design technology, which are separation membrane manufacturing technology, and it is a direct cause of membrane contamination, which is a direct cause of degradation of membrane performance and lifespan.
- the development of technology for improvement is insufficient.
- Prior Document 1 (Republic of Korea Patent Publication No. 10-1911786) discloses a method of separately introducing a gas used for cleaning the separation membrane from the outside.
- the cleaning cost increases.
- the cleaning gas since the cleaning gas must be separately introduced from the outside, the gas separated by the gas film cannot be reused but must be discharged to the outside, and there is a problem that a separate configuration for introducing the cleaning gas from the outside is required.
- Prior Document 2 Japanese Patent Laid-Open No. 1995-136472 discloses a method of cleaning the separation membrane by injecting water and backwashing by injecting air.
- a separate configuration for injecting water is required, and there is a problem in that the cost of wastewater generation and treatment increases.
- the present invention for solving the above problems relates to a gas separation membrane cleaning method.
- the method comprises the steps of: (a) introducing an external gas into the membrane module through an inlet line; (b) separating the external gas into a permeable gas and an impermeable gas according to the permeability to the separation membrane through the separation membrane module, and transferring the permeable gas to the separation line and the impermeable gas to the outlet line ; and (c) injecting at least a portion of the impermeable gas delivered to the outlet line into an inlet of the separation membrane module.
- step (c) the impermeable gas is stored in a washing tank connected to the outlet line, and the impermeable gas stored in the washing tank can be injected into the inlet of the separation membrane module.
- step (c) the impermeable gas is injected into the inlet of the separation membrane module through a cleaning line having one side connected to the cleaning tank and the other side connected to the side of the inlet line.
- the impermeable gas in step (c), may be circulated and injected a plurality of times without introducing the external gas.
- the present invention it is possible to prevent the accumulation of contaminants inside the separation membrane, to release contaminants from the separation membrane to improve separation efficiency, and to utilize the gas flowing out from the separation membrane to ensure stability, so gas separation membrane performance and lifespan can be extended, and operating and membrane replacement costs can be saved.
- FIG. 1 is a side cross-sectional view schematically illustrating a gas separation membrane cleaning apparatus used to perform a gas separation membrane operating method according to the present invention.
- FIG. 2 is a flowchart schematically illustrating a gas separation membrane cleaning method according to the present invention.
- 1 is a side cross-sectional view schematically illustrating a gas separation membrane cleaning apparatus used to perform a gas separation membrane operating method according to the present invention.
- 2 is a flowchart schematically illustrating a gas separation membrane cleaning method according to the present invention.
- the gas separation membrane cleaning apparatus used to perform the gas separation membrane operating method according to the present invention includes a separation membrane module 10 , a cleaning tank 20 , a cleaning line 30 , and a control unit 40 . ) is included.
- the gas separation membrane operation method includes a separation process and a cleaning process.
- An inlet line 1 on one side and an outlet line 2 on the other side are connected to the separation membrane module 10 .
- a separation line 3 is connected to the side of the separation membrane module 10 .
- the inlet line 1, the outlet line 2, and the separation line 3 are provided in the form of tubes.
- the separation membrane module 10 is provided with a plurality of separation membranes 11 in the form of an extended tube and provided in bundles.
- the separation membrane 11 may be, for example, a CO 2 trapping membrane that separates CO 2 from N 2 .
- the inlet line 1 has one side connected to a gas injection unit (not shown) for injecting external gas at high pressure, and the other side connected to the separation membrane module 10 .
- the control unit 40 controls a pump (not shown) to introduce an external gas from the gas injection unit into the separation membrane module 10 through the inlet line 1 ( s10 ).
- the external gas corresponds to the gas to be separated through the gas separation membrane in the separation process, and is distinguished from the gas used for cleaning the separation membrane in the cleaning process to be described later.
- the external gas is separated into a permeable gas and an impermeable gas according to the permeability to the separation membrane 11 through the separation membrane module 10 , and the permeable gas is transferred to the separation line 3 , and the impermeable gas is transferred to the outlet line It is transferred to (2) (s20).
- the permeable gas has a high permeability with respect to the separation membrane 11 of the separation membrane module 10 and is a gas that permeates through the separation membrane 11, and the impermeable gas corresponds to a gas having a relatively low permeability to the separation membrane 11 than the permeation gas. .
- the plurality of separation membranes 11 of the separation membrane module 10 are arranged in a horizontal direction in the drawing.
- the permeable gas that has passed through the separation membrane 11 exits in a direction perpendicular to the direction in which the separation membrane 11 is arranged, and the impermeable gas that has not passed through the separation membrane 11 is arranged with the separation membrane 11 . It is configured to exit in the same direction as the direction in which it was set.
- Each separation membrane 11 of the separation membrane module 10 communicates with the inlet line 1 on one side and the outlet line 2 on the other side.
- the outer space of the separation membrane 11 communicates with the separation line 3 .
- the permeation gas passes through the separation membrane 11 in a radial direction and permeates into the outer space of the separation membrane 11 .
- the permeate gas is separated by a separation line 3 connected to the outer space of the separation membrane 11 .
- the impermeable gas flows into the separation membrane 11 , moves in the longitudinal direction of the separation membrane 11 , and is delivered to the outlet line 2 communicating with the other side of the separation membrane 11 . do.
- the main causes of contamination and damage of the separation membrane 11 are dust, moisture, NOx, SOx, and the like, and a small amount of residual contaminants after pretreatment of the inflow gas is accumulated inside the separation membrane module 10 . These materials react with moisture over time to cause membrane contamination and breakage, thereby adversely affecting the separation efficiency of the separation membrane module 10 . In addition, since NOx and SOx react with moisture to form an acid, the accumulation of moisture, NOx, and SOx in the separation membrane should be minimized.
- the cleaning tank 20 is connected to the outlet line 2 , and at least a portion of the impermeable gas is stored in the cleaning tank 20 .
- a cleaning tank 20 is provided at the rear end of the gas separation membrane cleaning device, and the cleaning tank 20 stores a certain amount of the impermeable gas separated from the separation membrane module 10 and discarded.
- the impermeable gas remaining after the inlet gas is separated is mainly N 2 , O 2 , CO 2 , CO, etc., and is composed of a gas having a lower permeability than the permeable gas.
- the impermeable gas not stored in the cleaning tank 20 is exhausted to the outside through the discharge line 4 .
- the cleaning tank 20 does not store gas supplied from the outside other than the impermeable gas.
- the cleaning tank 20 utilizes the impermeable gas stored in the cleaning tank 20 to clean the separation membrane module 10 when contamination of the separation membrane module 10 occurs as described below. same.
- the cleaning line 30 is connected to the inlet 12 of the separation membrane module 10 and the other side is connected to the cleaning tank 20 .
- the cleaning line 30 is provided in the form of a tube.
- the impermeable gas stored in the cleaning tank 20 is supplied from the cleaning tank 20 to the cleaning line 30 at a pressure higher than the production pressure.
- the cleaning line 30 forms a path through which the impermeable gas supplied from the cleaning tank 20 is injected into the inlet 12 of the separation membrane module 10 through the valve 31 .
- the control unit 40 injects the impermeable gas supplied from the cleaning tank 20 to the cleaning line 30 into the inlet 12 of the separation membrane module 10 through the valve 31 .
- the existing The cleaning line 30 may be communicated with the inner space of the separation membrane module 10 through the inlet line 1 of However, the cleaning line 30 may be connected to the inlet 12 of the separation membrane module 10 separately from the inlet line 1 .
- the impermeable gas already used and stored in the cleaning tank 20 without introduction of an external gas injected into the separation membrane module 10 in the above-described separation process is removed from the inlet of the separation membrane module 10 .
- (12) is circulated and injected multiple times.
- the control unit 40 may control the valve 31 , and the control unit 40 may control to circulate and inject the impermeable gas into the inlet 12 of the separation membrane 11 at a predetermined cycle.
- the impermeable gas may be injected into each separation membrane 11 of the separation membrane module 10 through the inlet 12 of the separation membrane module to desorb and discharge contaminants in the separation membrane module 10 .
- the efficiency and lifespan of the separation membrane module 10 can be improved.
- the negative effect on the separation membrane 11 can be minimized.
- the impermeable gas is a gas generated during the production process, the impermeable gas is smoothly discharged for cleaning the separation membrane module 10 . Circulation can be supplied.
- the separation membrane 11 according to the present invention is a CO 2 trapping membrane
- the impermeable gas may be mainly composed of N 2 , which is stable to the separation membrane 11, and thus the separation membrane module 10 without a separate chemical stimulus ) contamination can be improved.
- the present invention can minimize contamination and damage that occurs when gas is separated using a gas separation membrane and extend the life of the separation membrane.
- the present invention recycles wasted gas among the separated gas, so that operating costs can be reduced. That is, in the present invention, in the gas separation membrane for separating gas, it is possible to prevent contamination of the separation membrane module by recovering and maintaining the separation efficiency of the membrane and utilizing the discarded gas.
- control unit 40 control unit
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims (4)
- (a) 유입라인을 통해 분리막 모듈로 외부 가스를 유입시키는 단계;(b) 상기 분리막 모듈을 통해 상기 외부 가스를 분리막에 대한 투과도에 따라 투과 가스 및 불투과 가스로 분리시켜, 상기 투과 가스를 상기 분리라인으로, 및 상기 불투과 가스를 상기 유출라인으로 전달하는 단계; 및(c) 상기 유출라인으로 전달된 상기 불투과 가스 중 적어도 일부를 상기 분리막 모듈의 인입부에 주입시키는 단계를 포함하는 것을 특징으로 하는, 기체 분리막 운전 방법.
- 제1항에 있어서,상기 (c) 단계는,상기 불투과 가스는 상기 유출라인에 연결된 세정탱크에 저장되며, 상기 세정탱크에 저장된 불투과 가스는 상기 분리막 모듈의 인입부에 주입되는 것을 특징으로 하는, 기체 분리막 운전 방법.
- 제2항에 있어서,상기 (c) 단계는,상기 불투과 가스는 일측이 상기 세정탱크에 연결되고 타측이 상기 유입라인의 측부에 연결된 세정라인을 통해 상기 분리막 모듈의 인입부에 주입되는 것을 특징으로 하는, 기체 분리막 운전 방법.
- 제1항에 있어서,상기 (c) 단계는, 상기 외부 가스의 유입 없이 상기 불투과 가스를 복수회 순환 주입시키는 것을 특징으로 하는, 기체 분리막 운전 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21898739.4A EP4252893A1 (en) | 2020-11-30 | 2021-11-30 | Gas separation membrane operation method |
CN202180090676.2A CN116710192A (zh) | 2020-11-30 | 2021-11-30 | 气体分离膜操作方法 |
US18/254,645 US20240001292A1 (en) | 2020-11-30 | 2021-11-30 | Gas separation membrane operation method |
JP2023532533A JP2023551505A (ja) | 2020-11-30 | 2021-11-30 | 気体分離膜の運転方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2020-0165170 | 2020-11-30 | ||
KR1020200165170A KR102503150B1 (ko) | 2020-11-30 | 2020-11-30 | 기체 분리막 운전 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022114914A1 true WO2022114914A1 (ko) | 2022-06-02 |
Family
ID=81755832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2021/017846 WO2022114914A1 (ko) | 2020-11-30 | 2021-11-30 | 기체 분리막 운전 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240001292A1 (ko) |
EP (1) | EP4252893A1 (ko) |
JP (1) | JP2023551505A (ko) |
KR (1) | KR102503150B1 (ko) |
CN (1) | CN116710192A (ko) |
WO (1) | WO2022114914A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07136472A (ja) | 1993-11-17 | 1995-05-30 | Miura Co Ltd | 気体分離膜の洗浄方法およびその装置 |
KR20110117465A (ko) * | 2010-04-21 | 2011-10-27 | 주식회사 씨엔엘에너지 | 연속 가스분리장치 및 연속 가스분리방법 |
WO2013092606A1 (de) * | 2011-12-19 | 2013-06-27 | Highq-Factory Gmbh | Verfahren zum reinigen eines filters |
KR20150000619A (ko) * | 2013-06-25 | 2015-01-05 | (주)파인텍 | 과불화화합물의 분리 및 재활용시스템 |
KR20150005008A (ko) * | 2013-07-04 | 2015-01-14 | 코웨이 주식회사 | 분리막의 유지 화학 세정 방법 및 유지 화학 세정 시스템 |
KR101911786B1 (ko) | 2018-07-16 | 2019-01-04 | 한국산업기술시험원 | 기체분리막 세정 장치 및 방법 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA023203B1 (ru) * | 2010-07-01 | 2016-05-31 | Эвоник Файберс Гмбх | Способ и установка для разделения газов |
KR101783429B1 (ko) * | 2016-01-06 | 2017-09-29 | 한국과학기술연구원 | 고투과성기체 회수장치 및 방법 |
KR101840732B1 (ko) * | 2016-01-06 | 2018-05-04 | 한국과학기술연구원 | 양방향성 고투과성기체 회수장치 및 방법 |
-
2020
- 2020-11-30 KR KR1020200165170A patent/KR102503150B1/ko active IP Right Grant
-
2021
- 2021-11-30 CN CN202180090676.2A patent/CN116710192A/zh active Pending
- 2021-11-30 JP JP2023532533A patent/JP2023551505A/ja active Pending
- 2021-11-30 WO PCT/KR2021/017846 patent/WO2022114914A1/ko active Application Filing
- 2021-11-30 US US18/254,645 patent/US20240001292A1/en active Pending
- 2021-11-30 EP EP21898739.4A patent/EP4252893A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07136472A (ja) | 1993-11-17 | 1995-05-30 | Miura Co Ltd | 気体分離膜の洗浄方法およびその装置 |
KR20110117465A (ko) * | 2010-04-21 | 2011-10-27 | 주식회사 씨엔엘에너지 | 연속 가스분리장치 및 연속 가스분리방법 |
WO2013092606A1 (de) * | 2011-12-19 | 2013-06-27 | Highq-Factory Gmbh | Verfahren zum reinigen eines filters |
KR20150000619A (ko) * | 2013-06-25 | 2015-01-05 | (주)파인텍 | 과불화화합물의 분리 및 재활용시스템 |
KR20150005008A (ko) * | 2013-07-04 | 2015-01-14 | 코웨이 주식회사 | 분리막의 유지 화학 세정 방법 및 유지 화학 세정 시스템 |
KR101911786B1 (ko) | 2018-07-16 | 2019-01-04 | 한국산업기술시험원 | 기체분리막 세정 장치 및 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR102503150B1 (ko) | 2023-02-23 |
CN116710192A (zh) | 2023-09-05 |
US20240001292A1 (en) | 2024-01-04 |
KR20220076219A (ko) | 2022-06-08 |
JP2023551505A (ja) | 2023-12-08 |
EP4252893A1 (en) | 2023-10-04 |
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