CN215506357U - Pneumatic membrane concentration system for microalgae - Google Patents
Pneumatic membrane concentration system for microalgae Download PDFInfo
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- CN215506357U CN215506357U CN202120445285.5U CN202120445285U CN215506357U CN 215506357 U CN215506357 U CN 215506357U CN 202120445285 U CN202120445285 U CN 202120445285U CN 215506357 U CN215506357 U CN 215506357U
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- membrane
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- tube
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- side opening
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- 239000012528 membrane Substances 0.000 title claims abstract description 85
- 241000195493 Cryptophyta Species 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000011148 porous material Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005406 washing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- JEBFVOLFMLUKLF-IFPLVEIFSA-N Astaxanthin Natural products CC(=C/C=C/C(=C/C=C/C1=C(C)C(=O)C(O)CC1(C)C)/C)C=CC=C(/C)C=CC=C(/C)C=CC2=C(C)C(=O)C(O)CC2(C)C JEBFVOLFMLUKLF-IFPLVEIFSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- MQZIGYBFDRPAKN-ZWAPEEGVSA-N astaxanthin Chemical compound C([C@H](O)C(=O)C=1C)C(C)(C)C=1/C=C/C(/C)=C/C=C/C(/C)=C/C=C/C=C(C)C=CC=C(C)C=CC1=C(C)C(=O)[C@@H](O)CC1(C)C MQZIGYBFDRPAKN-ZWAPEEGVSA-N 0.000 description 1
- 229940022405 astaxanthin Drugs 0.000 description 1
- 235000013793 astaxanthin Nutrition 0.000 description 1
- 239000001168 astaxanthin Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000009285 membrane fouling Methods 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model relates to a pneumatic membrane concentration system for microalgae, which comprises an algae liquid container, a membrane processor and a gas storage tank, wherein the interior of the membrane processor is divided into a shell pass and a tube pass which are separated by a microporous filter membrane, and the aperture of the microporous filter membrane is smaller than the diameter of algae cells; the algae liquid container is connected with the shell side of the membrane processor, algae liquid to be concentrated is provided for the shell side of the membrane processor, the gas storage tank is connected with both the shell side and the tube side of the membrane processor, and gas pressure is provided for the shell side and the tube side of the membrane processor. By using the pneumatic membrane concentration system, the algae liquid can be concentrated according to batches instead of circularly concentrated, so that the algae liquid only needs to pass through a water pump once by using the pneumatic membrane concentration system, and the damage to algae cells is reduced. In addition, the air pressure type membrane concentration system can adjust the air pressure in the shell pass and the tube pass during filtration, so that the air pressure in the tube pass is slightly larger than the air pressure in the shell pass, algae cells are not easy to attach to the filter membrane, and the probability of pollution of the filter membrane is reduced.
Description
Technical Field
The utility model relates to the field of microalgae culture, in particular to a pneumatic membrane concentration system and a concentration method for microalgae.
Background
As one of the main vectors for biosynthesis, microalgae is becoming one of the research hotspots. The microalgae cells can accumulate active substances such as grease, high unsaturated fatty acid, astaxanthin and the like, can be used for other high value-added industries such as biodiesel or health products, and has bright application prospects in the fields of energy sources, medicines, cosmetics, health products, fine chemical engineering and the like.
The concentration and harvesting of microalgae from microalgae culture solution is an important problem in the current microalgae industrialization process. Currently, microalgae concentration and recovery are generally achieved by three means: flocculation, centrifugation and filtration. Among them, the flocculation method requires addition of chemicals and is not suitable for many fields. The centrifugal method not only consumes huge energy, but also has certain damage to algae cells, and is easy to influence the product quality. The filtration method mainly adopts a microporous membrane filtration mode. The existing membrane type microalgae concentration system has two problems. Firstly, the algae liquid usually enters a membrane processor for multiple times in a circulating mode to achieve the purpose of concentration, and the algae liquid needs to pass through a water pump for multiple times, so that the shearing force of the water pump on algae cells is too large, and the product quality is easily influenced; secondly, microalgae easily adhere to the filter membrane, causing membrane fouling.
Therefore, a new microalgae filtration system and method are needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a pneumatic membrane concentration system for microalgae, which comprises an algae liquid container, a membrane processor and a gas storage tank, wherein the interior of the membrane processor is divided into a shell pass and a tube pass, and the shell pass and the tube pass are separated by a microporous filter membrane, and the pore diameter of the microporous filter membrane is smaller than the diameter of algae cells;
the algae liquid container is connected with the shell pass of the membrane processor, algae liquid to be concentrated is provided for the shell pass of the membrane processor, the gas storage tank is connected with both the shell pass and the tube pass of the membrane processor, and gas pressure is provided for the shell pass and the tube pass of the membrane processor.
In a specific embodiment, the membrane processor is provided with a first shell-side opening, a first tube-side opening and a second shell-side opening and a second tube-side opening, wherein the first shell-side opening, the second tube-side opening and the second tube-side opening are positioned below the membrane processor, the algae liquid container is connected with the first shell-side opening through a pipeline, the gas storage tank is connected with the second shell-side opening and the second tube-side opening through a pipeline, a second valve is arranged for controlling the gas pressure at the second shell-side opening, and a third valve is arranged for controlling the gas pressure at the second tube-side opening.
In a specific embodiment, the pneumatic membrane concentration system further includes a first pump and a first valve, the first pump is disposed between the algae liquid container and the membrane processor, the first pump is used for conveying algae liquid from the algae liquid container to the membrane processor, and the first valve is used for closing communication between the algae liquid container and the membrane processor.
By using the pneumatic membrane concentration system, the algae liquid can be concentrated according to batches instead of circularly concentrated, so that the algae liquid only needs to pass through a water pump once by using the pneumatic membrane concentration system, and the damage to algae cells is reduced. In addition, the air pressure type membrane concentration system can adjust the air pressure in the shell pass and the tube pass during filtration, so that the air pressure in the tube pass is slightly larger than the air pressure in the shell pass, algae cells are not easy to attach to the filter membrane, and the probability of pollution of the filter membrane is reduced.
In a specific embodiment, the lower portion of the membrane processor is further provided with a third shell-side opening. The third shell side opening is used for collecting the algae concentrated solution, so that the operation is convenient, and the algae concentrated solution can be collected without disassembling the algae solution container and the first shell side opening.
In a specific embodiment, the pneumatic membrane concentration system of the present invention is further provided with a washing liquid container, and the washing liquid container is connected to the second shell-side opening and the second tube-side opening. The arrangement ensures that the pneumatic membrane concentration system can be cleaned conveniently.
Drawings
Figure 1 shows a schematic diagram of a pneumatic membrane concentration system of example 1;
fig. 2 shows a schematic diagram of a pneumatic membrane concentration system of example 2;
the device comprises a algae liquid container 1, a membrane processor 2, a first shell pass opening 21, a first tube pass opening 22, a first tube pass opening 23, a second shell pass opening 24, a second tube pass opening 25, a third shell pass opening 31, a first valve 32, a fourth valve 33, a second valve 34, a third valve 35, a fifth valve 4, a gas storage tank 5, a first pump 6, a washing liquid container 7 and a second pump 7.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 1, the pneumatic membrane concentration system of the present embodiment includes an algae liquid container 1, a membrane processor 2, and a gas storage tank 4, wherein the inside of the membrane processor 2 is divided into a shell pass and a tube pass, and the shell pass and the tube pass are separated by a microporous filter membrane, and the pore diameter of the microporous filter membrane is smaller than the diameter of algae cells;
the algae liquid container 1 is connected with the shell side of the membrane processor 2, provides algae liquid to be concentrated for the shell side of the membrane processor 2, and the gas storage tank 4 is connected with both the shell side and the tube side of the membrane processor 2 and provides gas pressure for the shell side and the tube side of the membrane processor 2.
The membrane processor 2 is provided with a first shell side opening 21 and a first tube side opening 22 which are positioned at the lower part, and a second shell side opening 23 and a second tube side opening 24 which are positioned at the upper part, the algae liquid container 1 is connected with the first shell side opening 21 through a pipeline, the gas storage tank 4 is connected with the second shell side opening 23 and the second tube side opening 24 through a pipeline, a second valve 33 is provided for controlling the gas pressure at the second shell side opening 23, and a third valve 34 is provided for controlling the gas pressure at the second tube side opening 24.
A first pump 5 and a first valve 31 are arranged between the algae liquid container 1 and the membrane processor 2, the first pump 5 is used for conveying algae liquid from the algae liquid container 1 to the membrane processor 2, and the first valve 31 is used for closing the communication between the algae liquid container 1 and the membrane processor 2.
When the membrane processor is used, the first valve 31 is firstly opened, the first pump 5 is started, and the algae liquid to be concentrated in the algae liquid container 1 is conveyed to the shell side of the membrane processor 2 through the first shell side opening 21 and is filled in the shell side. The second valve 33 is then opened and the gas pressure in the shell side is regulated. Under the action of the shell side air pressure, water in the algae liquid permeates the filter membrane and enters the tube side. The third valve 34 is then opened and adjusted to adjust the gas pressure in the tube side to be slightly greater than the gas pressure in the shell side. The shell side and tube side gas pressure was maintained until the batch filtration was complete. The step has two effects, on one hand, the step is beneficial to discharging water in the tube pass; on the other hand, the micro-algae cells can be reduced from being attached to the filter membrane by keeping the air pressure in the tube side slightly larger than the air pressure in the shell side, so that the micro-pores of the filter membrane are prevented from being blocked and the filter membrane is prevented from being polluted. In the process, the algae liquid to be concentrated only passes through the water pump once, and the damage to algae cells is smaller compared with a circulating filtration mode.
In one embodiment, a third shell-side opening 25 may also be provided in the lower portion of the membrane processor 2. When concentration is complete, the third shell side opening 25 can be opened to facilitate collection of the algae concentrate.
Example 2
As shown in fig. 2, the concentration system of the present embodiment is otherwise identical to that of embodiment 1 except that the concentration system of the present embodiment further includes a washing liquid container 6. The wash liquor container 6 is connected to a second shell-side opening 23 and a second tube-side opening 24, and wash liquor can be injected into the shell side and the tube side of the membrane processor 2 by a second pump 7 for washing the shell side and the tube side. A line for discharging the washing liquid is also provided between the first shell-side opening 21 and the first valve 31, and a fourth valve 32 is provided on the line, the washing liquid container 6 and the gas holder 4 can share the line for the sake of simplicity of line configuration, and a fifth valve 35 is provided between the gas holder 4 and the shared line. Before cleaning, the first valve 31 and the fifth valve 35 are closed, and the second valve 33, the third valve 34, and the fourth valve 32 are opened. Wash liquor is delivered from the wash liquor container 6 to the shell side and tube side by the second pump 7, through the shell side and tube side and out through the first shell side opening 21 and first tube side opening 22 respectively.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The pneumatic membrane concentration system for microalgae is characterized by comprising an algae liquid container (1), a membrane processor (2) and a gas storage tank (4), wherein the inside of the membrane processor (2) is divided into a shell pass and a tube pass which are separated by a microporous filter membrane, and the pore diameter of the microporous filter membrane is smaller than the diameter of algae cells;
the algae liquid container (1) is connected with the shell side of the membrane processor (2) and used for providing algae liquid to be concentrated for the shell side of the membrane processor (2), the gas storage tank (4) is connected with both the shell side and the tube side of the membrane processor (2) and used for providing gas pressure for the shell side and the tube side of the membrane processor (2).
2. The vapour-pressure membrane concentration system according to claim 1, wherein the membrane processor (2) is provided with a first shell-side opening (21) located below, a first tube-side opening (22), and a second shell-side opening (23) and a second tube-side opening (24) located above, the algae liquid container (1) is connected with the first shell-side opening (21) by a pipeline, the gas storage tank (4) is connected with the second shell-side opening (23) and the second tube-side opening (24) by a pipeline, and a second valve (33) is provided for controlling the gas pressure at the second shell-side opening (23), and a third valve (34) is provided for controlling the gas pressure at the second tube-side opening (24).
3. The vapour-pressure membrane concentration system according to claim 2, further comprising a first pump (5) and a first valve (31) arranged between the algae liquid container (1) and the membrane processor (2), the first pump (5) being configured to convey algae liquid from the algae liquid container (1) to the membrane processor (2), the first valve (31) being configured to close communication between the algae liquid container (1) and the membrane processor (2).
4. The vapour-pressure membrane concentration system according to claim 2, wherein the lower part of the membrane processor (2) is further provided with a third shell-side opening (25).
5. The vapour-pressure membrane concentration system according to claim 2, wherein a wash solution container (6) is provided, the wash solution container (6) being connected to the second shell-side opening (23) and the second tube-side opening (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120445285.5U CN215506357U (en) | 2021-03-02 | 2021-03-02 | Pneumatic membrane concentration system for microalgae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120445285.5U CN215506357U (en) | 2021-03-02 | 2021-03-02 | Pneumatic membrane concentration system for microalgae |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215506357U true CN215506357U (en) | 2022-01-14 |
Family
ID=79799776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120445285.5U Expired - Fee Related CN215506357U (en) | 2021-03-02 | 2021-03-02 | Pneumatic membrane concentration system for microalgae |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215506357U (en) |
-
2021
- 2021-03-02 CN CN202120445285.5U patent/CN215506357U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |