CN214106475U - Auxiliary membrane distillation device for hygroscopic solution - Google Patents
Auxiliary membrane distillation device for hygroscopic solution Download PDFInfo
- Publication number
- CN214106475U CN214106475U CN202022693445.6U CN202022693445U CN214106475U CN 214106475 U CN214106475 U CN 214106475U CN 202022693445 U CN202022693445 U CN 202022693445U CN 214106475 U CN214106475 U CN 214106475U
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- CN
- China
- Prior art keywords
- membrane distillation
- solution
- feed liquid
- reheater
- absorber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000012528 membrane Substances 0.000 title claims abstract description 52
- 238000004821 distillation Methods 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a moisture absorption solution auxiliary type membrane distillation device. The system comprises a generator, a reheater, a liquid discharge valve, a membrane distillation assembly, a feed liquid pump, a solution pump, an absorber, a preheater and a solution valve; the generator, the solution valve, the absorber and the solution pump are sequentially connected through a pipeline to form a moisture absorption solution circulation loop; the membrane distillation assembly, the feed liquid pump, the preheater and the reheater are sequentially connected through pipelines to form a feed liquid circulation loop; a steam outlet at the left end of the generator is connected with a steam inlet at the upper end of the reheater through a pipeline, and a drain valve is connected with a condensate outlet at the lower end of the reheater through a pipeline; a water vapor outlet at the upper end of the membrane distillation assembly is connected with a water vapor inlet at the left end of the absorber through a pipeline; the preheater is disposed within the absorber. The beneficial effects of the utility model are that reduce the concentrated energy consumption of feed liquid membrane distillation.
Description
Technical Field
The utility model relates to a feed liquid enrichment facility that is used for fields such as food, biology, pharmacy and chemical industry, in particular to moisture absorption solution auxiliary type membrane distillation plant.
Background
The membrane used for membrane distillation is a hydrophobic microporous membrane and has the characteristic of allowing water vapor to pass through but not allowing feed liquid to pass through; the water in the feed liquid is vaporized into water vapor on the surface of the membrane and passes through the membrane holes to reach the other side of the membrane, and the concentration of solute in the feed liquid is gradually increased along with the gradual reduction of the water in the feed liquid, so that the feed liquid is gradually concentrated.
When the moisture in the feed liquid is vaporized on the surface of the membrane, heat energy needs to be consumed, and when the feed liquid is concentrated by utilizing membrane distillation, heat energy needs to be continuously provided for the feed liquid; in the conventional membrane distillation device, the feed liquid is directly heated by adopting an electric heating or fuel combustion heating mode, the energy consumption of feed liquid membrane distillation and concentration is more, and the application and popularization of the membrane distillation technology are limited.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a moisture absorption solution assisted membrane distillation device for reducing energy consumption of feed liquid membrane distillation concentration.
The structure principle of the utility model is schematically shown in the attached figure 1. Comprises a generator (1), a reheater (2), a liquid discharge valve (3), a membrane distillation assembly (4), a feed liquid pump (5), a solution pump (6), an absorber (7), a preheater (8) and a solution valve (9); the generator (1), the solution valve (9), the absorber (7) and the solution pump (6) are connected in sequence through pipelines to form a moisture absorption solution circulation loop; the membrane distillation assembly (4), the feed liquid pump (5), the preheater (8) and the reheater (2) are sequentially connected through pipelines to form a feed liquid circulation loop; a water vapor outlet at the left end of the generator (1) is connected with a water vapor inlet at the upper end of the reheater (2) through a pipeline, and a drain valve (3) is connected with a condensed water outlet at the lower end of the reheater (2) through a pipeline; a water vapor outlet at the upper end of the membrane distillation component (4) is connected with a water vapor inlet at the left end of the absorber (7) through a pipeline; the preheater (8) is arranged in the absorber (7).
The generator (1) is of an electric heating type or a gas heating type.
The reheater (2) is plate-type or sleeve-type.
The membrane distillation module (4) is a plate frame type or a shell-and-tube type.
The preheater (8) is a coil pipe type.
The utility model has the advantages that: reduce the energy consumption of the membrane distillation and concentration of the feed liquid.
Drawings
FIG. 1 is a schematic diagram of the structure principle of the present invention;
in the figure:
1 is a generator 2, a reheater 3, a drain valve 4 and a membrane distillation assembly
5 is a feed liquid pump 6, a solution pump 7 is an absorber 8 and is a preheater
9 is a solution valve
Detailed Description
As shown in the attached figure 1, the utility model relates to a moisture absorption solution auxiliary type membrane distillation device, which comprises a generator (1), a reheater (2), a liquid discharge valve (3), a membrane distillation component (4), a feed liquid pump (5), a solution pump (6), an absorber (7), a preheater (8) and a solution valve (9); the generator (1), the solution valve (9), the absorber (7) and the solution pump (6) are connected in sequence through pipelines to form a moisture absorption solution circulation loop; the membrane distillation assembly (4), the feed liquid pump (5), the preheater (8) and the reheater (2) are sequentially connected through pipelines to form a feed liquid circulation loop; a water vapor outlet at the left end of the generator (1) is connected with a water vapor inlet at the upper end of the reheater (2) through a pipeline, and a drain valve (3) is connected with a condensed water outlet at the lower end of the reheater (2) through a pipeline; a water vapor outlet at the upper end of the membrane distillation component (4) is connected with a water vapor inlet at the left end of the absorber (7) through a pipeline; the preheater (8) is arranged in the absorber (7); the generator (1) is of an electric heating type or a gas heating type; the reheater (2) is plate type or sleeve type; the membrane distillation component (4) is a plate frame type or a shell-and-tube type; the preheater (8) is a coil type.
When the feed liquid needs to be concentrated, the space on the left side in the membrane distillation assembly (4) is filled with the feed liquid to be concentrated, the absorber (7) is filled with the low-concentration moisture absorption solution, and the generator (1) is filled with the high-concentration moisture absorption solution; the generator (1), the feed liquid pump (5) and the solution pump (6) operate; the solution in the generator (1) is heated and boiled, and the generated water vapor enters a reheater (2); condensing the water vapor in the reheater (2) to release heat, and discharging condensed water generated after condensation of the water vapor to feed liquid flowing through the reheater (2) through a liquid discharge valve (3); the feed liquid which flows through the reheater (2) and is heated to a set temperature enters the membrane distillation assembly (4), moisture in the feed liquid is vaporized into steam on the surface of the hydrophobic microporous membrane, and the steam passes through the membrane pores and reaches the other side of the membrane; when the feed liquid flows through the membrane distillation assembly (4), moisture in the feed liquid is continuously vaporized and discharged on the surface of the membrane, and the temperature of the feed liquid is gradually reduced by absorbing heat in the moisture vaporization process; the feed liquid with lower temperature of the membrane distillation component (4) enters a preheater (8) under the drive of a feed liquid pump (5); the feed liquid is primarily heated in the preheater (8) and then enters the reheater (2), and is further heated to a set temperature by the reheater (2) and then returns to the membrane distillation assembly (4); the membrane-penetrating water vapor in the right space in the membrane distillation component (4) enters the absorber (7) under the absorption action of the hygroscopic solution in the absorber (7), the water vapor releases absorption heat in the process of being absorbed by the hygroscopic solution, and the feed liquid flowing through the preheater (8) is subjected to primary temperature rise through the preheater (8); the low-concentration hygroscopic solution absorbing the water vapor is sent into the generator (1) through the solution pump (6), is heated and boiled in the generator (1), and the water vapor in the hygroscopic solution is discharged; the high-concentration hygroscopic solution with the discharged water vapor returns to the absorber (7) through a solution valve (9) to continuously absorb the water vapor from the membrane distillation assembly (4); along with the operation of the feed liquid in the feed liquid circulation loop, the moisture in the feed liquid is gradually reduced, the solute concentration in the feed liquid is gradually increased, and when the solute concentration in the feed liquid reaches a set value, the generator (1), the feed liquid pump (5) and the solution pump (6) stop operating.
Most of the heat energy obtained when the feed liquid operates in the circulating loop comes from the absorption heat released by the water vapor generated by the absorption solution absorption membrane distillation assembly (4) in the absorber (7), and a small part of the heat energy comes from the condensation heat released by the condensation of the water vapor generated by the consumption of electric energy or fuel gas in the generator (1) in the reheater (2), and the electric energy or fuel consumed in the feed liquid membrane distillation concentration process is obviously less than that consumed by the direct heating of the feed liquid by the electric energy or the fuel.
Although an embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be used to limit the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (5)
1. A moisture absorption solution auxiliary type membrane distillation device is characterized by comprising a generator (1), a reheater (2), a liquid discharge valve (3), a membrane distillation assembly (4), a feed liquid pump (5), a solution pump (6), an absorber (7), a preheater (8) and a solution valve (9); the generator (1), the solution valve (9), the absorber (7) and the solution pump (6) are connected in sequence through pipelines to form a moisture absorption solution circulation loop; the membrane distillation assembly (4), the feed liquid pump (5), the preheater (8) and the reheater (2) are sequentially connected through pipelines to form a feed liquid circulation loop; a water vapor outlet at the left end of the generator (1) is connected with a water vapor inlet at the upper end of the reheater (2) through a pipeline, and a drain valve (3) is connected with a condensed water outlet at the lower end of the reheater (2) through a pipeline; a water vapor outlet at the upper end of the membrane distillation component (4) is connected with a water vapor inlet at the left end of the absorber (7) through a pipeline; the preheater (8) is arranged in the absorber (7).
2. The hygroscopic solution-assisted membrane distillation apparatus as defined in claim 1 wherein the generator (1) is of the electrical or gas heating type.
3. The apparatus for membrane distillation assisted by hygroscopic solution according to claim 1, characterized in that the reheater (2) is of plate type or of sleeve type.
4. The hygroscopic solution-assisted membrane distillation apparatus as defined in claim 1, wherein the membrane distillation module (4) is a plate-frame type or a shell-and-tube type.
5. The hygroscopic solution-assisted membrane distillation apparatus as defined in claim 1, wherein the preheater (8) is a coil type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693445.6U CN214106475U (en) | 2020-11-20 | 2020-11-20 | Auxiliary membrane distillation device for hygroscopic solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693445.6U CN214106475U (en) | 2020-11-20 | 2020-11-20 | Auxiliary membrane distillation device for hygroscopic solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214106475U true CN214106475U (en) | 2021-09-03 |
Family
ID=77505471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022693445.6U Expired - Fee Related CN214106475U (en) | 2020-11-20 | 2020-11-20 | Auxiliary membrane distillation device for hygroscopic solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214106475U (en) |
-
2020
- 2020-11-20 CN CN202022693445.6U patent/CN214106475U/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: 20210903 |