CN108744987B - Water supplementing microstructure and system for gas membrane separation - Google Patents
Water supplementing microstructure and system for gas membrane separation Download PDFInfo
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- CN108744987B CN108744987B CN201810637348.XA CN201810637348A CN108744987B CN 108744987 B CN108744987 B CN 108744987B CN 201810637348 A CN201810637348 A CN 201810637348A CN 108744987 B CN108744987 B CN 108744987B
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- microstructure
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- 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
-
- 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
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Air Humidification (AREA)
Abstract
The invention relates to a gas separation technology, and provides a water supplementing microstructure, which comprises the following components: a ventilation channel (42) penetrating the water replenishing microstructure from top to bottom; the water supplementing device comprises a water supplementing microstructure, a water supplementing channel (41) which is arranged at the bottom of the water supplementing microstructure and enters from one side, and a plurality of gaps which extend outwards are arranged on the water supplementing channel (41) and serve as water supplementing spray heads (43). The invention also proposes a gas membrane separation system comprising: a gas supply tank (1); a humidifying tank (2), wherein the humidifying tank (2) is connected behind the air supply tank (1); a water supplementing microstructure (4); a hydrogel film (8), the hydrogel film (8) being arranged below the water supplementing microstructure (4); and the condensing tank (9), wherein the condensing tank (9) is connected behind the water supplementing microstructure (4). The invention can solve the problem of water shortage of the membrane during application.
Description
Technical Field
The present invention relates to gas separation technology, and more particularly, to a water replenishing microstructure and system for gas membrane separation.
Background
In the gas membrane separation technology, the separation effect of the hydrogel membrane is very good, and the hydrogel membrane has very high application value and development prospect, but the separation effect of the hydrogel membrane is related to the moisture content in the membrane, and the water loss in the separation process can lead to the reduction of the separation performance. Therefore, a gas membrane separation system using a hydrogel is required to add a device for preventing water loss in the membrane or for replenishing the membrane. The invention designs and manufactures the water supplementing device with small occupied area, compact structure and good water supplementing effect through the 3D printing technology, thereby greatly reducing the production cost, strengthening the separation effect and ensuring the stability of the membrane separation performance.
Disclosure of Invention
Aiming at the problem of water shortage in application of the membrane in the prior art, the invention provides a water supplementing microstructure for gas membrane separation, which comprises the following components: a ventilation channel penetrating the water supplementing microstructure from top to bottom; the water supplementing device comprises a water supplementing microstructure, a water supplementing channel, a water supplementing nozzle and a water supplementing device, wherein the water supplementing microstructure is arranged at the bottom of the water supplementing microstructure, the water supplementing channel enters from one side, a plurality of gaps extending outwards are formed in the water supplementing channel, and the gaps are used as water supplementing nozzles.
Optionally, the water supplementing channel is formed by combining a plurality of T-shaped pipelines.
Optionally, the water replenishing microstructure is formed by 3D printing.
Optionally, the ventilation channels and the water supplementing channels are staggered.
The invention also proposes a system for gas membrane separation comprising: a gas supply tank; the humidifying tank is connected behind the air supply tank; moisturizing microstructure, moisturizing microstructure connects behind the humidification jar, moisturizing microstructure includes: a ventilation channel penetrating the water supplementing microstructure from top to bottom; the water supplementing channel is positioned at the bottom of the water supplementing microstructure, and is provided with a plurality of gaps extending outwards, and the gaps are used as water supplementing spray heads; a hydrogel film disposed below the moisturizing microstructure; and the condensing tank is connected behind the water supplementing microstructure.
Optionally, the gas membrane separation system comprises: a conditioning tank for stabilizing the passing gas; the adjusting tank is connected between the humidifying tank and the water supplementing microstructure;
optionally, the gas membrane separation system comprises: a humidity probe disposed above the hydrogel film; and the injection pump is connected to the water supplementing channel of the water supplementing microstructure, and when the humidity of the gas measured by the humidity probe is lower than a certain threshold value, the injection pump is started to inject water into the water supplementing channel.
Optionally, the gas membrane separation system comprises: and a vacuum pump connected after the condensing tank, the condensed gas being pumped out via the vacuum pump.
Optionally, the gas membrane separation system comprises: a vacuum controller for controlling the vacuum pump; and the chromatograph is arranged at the carbon dioxide outlet of the vacuum pump.
Optionally, the gas membrane separation system comprises: the water supplementing channel is formed by combining a plurality of T-shaped pipelines, and the water supplementing microstructure is formed by 3D printing.
The beneficial effects of the invention are as follows:
the invention has the advantages of simple structure, sufficient water supplementing device, good water supplementing effect, automatic adjustment, small occupied area and flexibility, solves the defects of insufficient water supplementing or overlarge occupied area of the prior invention, and can achieve good separation effect under the condition of low cost.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a top view of the water compensating microstructure of fig. 1.
Fig. 3 is a bottom view of the moisturizing microstructure of fig. 1.
Fig. 4 is a left side view of the moisturizing microstructure of fig. 1.
Fig. 5 is a right side view of the moisturizing microstructure of fig. 1.
Fig. 6 is a cross-sectional view of a front view of a portion of the water replenishment microstructure of fig. 1.
Reference numerals
The device comprises a gas supply tank 1, a humidifying tank 2, a regulating tank 3, a water supplementing microstructure 4, an injection pump 5, a water supplementing tank 6, a humidity probe 7, a hydrogel film 8, a condensing tank 9, a vacuum controller 10, a mass flowmeter 11, a vacuum pump 12, a carbon dioxide outlet 13, a chromatograph 14, a discharge pipeline 15, a water supplementing channel 41, a ventilation channel 42 and a water supplementing spray head 43.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like elements are designated by like reference numerals. The following embodiments and technical features in the embodiments may be combined with each other without collision.
As shown in fig. 1, the system of the present invention comprises a gas supply tank 1, and after the gas in the gas supply tank 1 comes out, the water flowing into a humidifying tank 2 is controlled by a valve, and the water enters a regulating tank 3 in the form of saturated gas. The purpose of the conditioning tank 3 is to enable the physical parameters of the intake air to be averaged over time within the conditioning tank in case of fluctuations to ensure a relatively stable recent physical parameters.
The gas coming out of the regulating tank 3 enters the water supplementing microstructure 4 for supplementing water. The regulating tank 3 and the water supplementing microstructure 4 can be placed in an incubator, the incubator has the function of stabilizing the temperature, avoiding the fluctuation of the saturated steam content of the inlet air along with the temperature change due to the temperature change, and possibly causing the reduction of the saturation degree of the humidity of the gas, so that the water of the water gel is easily carried and is dehydrated. Although the adjustment tank 3 can improve the fluctuation of the temperature, fluctuation of the saturation of the gas humidity is caused in the case where the intake air temperature is greatly changed, the flow rate is suddenly changed, or the ambient temperature (humidifying tank temperature) is suddenly changed, or the like.
The water content of the hydrogel film is a primary condition to ensure good separation performance. Therefore, in order to ensure the water content of the hydrogel, a water supplementing device needs to be added to the membrane, and the invention provides a water supplementing microstructure 4.
The moisturizing microstructure 4 is a 3d printing microstructure. The moisturizing microstructure 4 comprises a moisturizing channel 41 for water to flow and a venting channel 42 for air to flow. Fig. 2 shows a top view of the water replenishing microstructure, with the shaded portion in fig. 2 being the housing portion. The vent channel 42 is a cuboid with the channel extending throughout the microstructure from top to bottom. Fig. 3 shows a bottom view of the water replenishing microstructure, with the shaded portion in fig. 3 being a housing portion. It can be seen that the bottom of the refill microstructure is provided with a refill nozzle 43 connected to a refill channel 41 (see fig. 4), and that the refill nozzle 43 may be a slit extending downwardly from the refill channel 41. Fig. 4 shows a left side view of the water replenishing microstructure, and fig. 5 shows a right side view of the water replenishing microstructure. Fig. 6 shows a cross-sectional view of the water replenishment microstructure from the front view of the lower part of the water replenishment microstructure (including the water replenishment channel). The water supplementing channel 41 is formed by combining a plurality of T-shaped square pipelines, is arranged on the side surface and the bottom surface of the microstructure, and is used for supplying water in the side injection 5 to the structure of the hydrogel film 8 below the water supplementing microstructure in an atomized mode.
Referring again to fig. 1, the separation device of the present invention further comprises a humidity probe 7, wherein the humidity probe 7 is disposed above the hydrogel film 8, and when the gas passes through the humidity probe 7 above the hydrogel film 8, the humidity probe 7 measures the humidity of the gas, if the gas is lower than a set value, the injection pump 5 is started, water in the water supplementing tank 6 enters the water supplementing microstructure 4 through the injection pump 5, the water pressure is increased to spray atomized water mist downwards, and the humidity is increased. The atomized water mist can better and more fully supplement the water on the hydrogel film 8, and the water supplementing effect is more excellent.
The hydrogel membrane 8 has a 3-layer structure, wherein the upper layer and the lower layer are supporting layers, and the middle layer is a membrane structure for truly separating gas, so that the cost of the structure can be reduced, and the service life of the membrane and the selective permeation effect can be improved. The selected gas is automatically permeated when passing through the membrane. When the unselected gas reaches this structure, it cannot permeate, and is discharged from the exhaust duct 15 connected to the upper right of the water-replenishing microstructure 4.
The separation device of the invention also comprises a condensation tank 9, wherein the condensation tank 9 is connected with the water supplementing microstructure 4, and the gas passing through the hydrogel film 8 enters the condensation pipe 9 for condensation and dehydration. The dehydrated gas is pumped out by the vacuum controller 10, is sucked out by the mass flowmeter 11 and is discharged by the vacuum pump 12, and the carbon dioxide is discharged through the carbon dioxide outlet 13, so that the purpose of gas separation is achieved. At the same time, a small portion of this gas is analyzed by chromatograph 14 to ensure that the reaction is always running properly.
The above embodiments are only preferred embodiments of the present invention, and it is intended that the common variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the scope of the present invention.
Claims (5)
1. A system for gas membrane separation comprising:
a gas supply tank (1);
a humidifying tank (2), wherein the humidifying tank (2) is connected behind the air supply tank (1);
moisturizing microstructure (4) that forms is printed by 3D, moisturizing microstructure (4) are connected behind humidification jar (2), moisturizing microstructure includes: a ventilation channel (42) penetrating the water replenishing microstructure from top to bottom; the water supplementing device comprises a water supplementing microstructure, a water supplementing channel (41) which is arranged at the bottom of the water supplementing microstructure and enters from one side, a plurality of gaps which extend outwards are formed in the water supplementing channel (41) and serve as water supplementing spray heads (43), the water supplementing channel (41) is formed by combining a plurality of T-shaped pipelines, and ventilation channels (42) and the water supplementing channel (41) are staggered;
the hydrogel film (8) is arranged below the water supplementing microstructure (4), the hydrogel film (8) has a three-layer structure, an upper layer and a lower layer are supporting layers, and a membrane structure for gas separation is arranged in the middle;
and the condensing tank (9), wherein the condensing tank (9) is connected behind the water supplementing microstructure (4).
2. The system according to claim 1, characterized in that it comprises:
a conditioning tank (3) for stabilizing the passing gas; the adjusting tank (3) is connected between the humidifying tank (2) and the water supplementing microstructure (4);
3. the system according to claim 1, characterized in that it comprises:
a humidity probe (7) disposed above the hydrogel film (8);
and the injection pump (5) is connected to the water supplementing channel (41) of the water supplementing microstructure (4), and when the humidity of the gas measured by the humidity probe (7) is lower than a certain threshold value, the injection pump (5) is started to inject water into the water supplementing channel (41).
4. The system according to claim 1, characterized in that it comprises:
and a vacuum pump (12) connected to the condensing tank (9), wherein the condensed gas is pumped out through the vacuum pump (12).
5. The system according to claim 1, characterized in that it comprises:
a vacuum controller (10) for controlling the vacuum pump (12);
and a chromatograph (14) provided at a carbon dioxide outlet (13) of the vacuum pump (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637348.XA CN108744987B (en) | 2018-06-20 | 2018-06-20 | Water supplementing microstructure and system for gas membrane separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637348.XA CN108744987B (en) | 2018-06-20 | 2018-06-20 | Water supplementing microstructure and system for gas membrane separation |
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| Publication Number | Publication Date |
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| CN108744987A CN108744987A (en) | 2018-11-06 |
| CN108744987B true CN108744987B (en) | 2023-09-01 |
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| CN201810637348.XA Active CN108744987B (en) | 2018-06-20 | 2018-06-20 | Water supplementing microstructure and system for gas membrane separation |
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Families Citing this family (1)
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| CN112516758A (en) * | 2020-12-13 | 2021-03-19 | 天津大学 | Secondary membrane separation system and method for capturing carbon dioxide in flue gas |
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Effective date of registration: 20230728 Address after: 102206 No. 2 Nong Road, Zhu Xin Zhuang, Beijing, Changping District Applicant after: NORTH CHINA ELECTRIC POWER University Address before: 102206 No. 2 Nong Road, Zhu Xin Zhuang, Beijing, Changping District Applicant before: NORTH CHINA ELECTRIC POWER University Applicant before: JIANGSU CHANGQING AGROCHEMICAL Co.,Ltd. |
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