CN2775039Y - Double tower type energy recovery device in reverse osmosis seawater desalting device - Google Patents
Double tower type energy recovery device in reverse osmosis seawater desalting device Download PDFInfo
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- CN2775039Y CN2775039Y CNU2005200254837U CN200520025483U CN2775039Y CN 2775039 Y CN2775039 Y CN 2775039Y CN U2005200254837 U CNU2005200254837 U CN U2005200254837U CN 200520025483 U CN200520025483 U CN 200520025483U CN 2775039 Y CN2775039 Y CN 2775039Y
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- China
- Prior art keywords
- energy recovery
- reverse osmosis
- tower
- seawater
- recovery tower
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model relates to a double tower type energy recovering device in a reverse osmosis seawater desalting apparatus. The utility model comprises an energy recovering tower A and an energy recovering tower B which stand in parallel, wherein a feeding seawater pipe is connected with the tower tops of the energy recovering tower A and the energy recovering tower B by two non-return valves which only allow seawater to enter but not to exit; the upper part of the energy recovering tower A and the upper part of the energy recovering tower B are provided with pipe passages which are connected with a reverse osmosis pressure boosting pump by two non-return valves which only allow the seawater to exit but not to enter; pipe passages at the bottom parts of the two energy recovering towers are connected with two interfaces of a four-way valve, and the other two interfaces of the four-way valve are respectively connected with a concentrated seawater opening of the reverse osmosis apparatus and a discharge opening of the reverse osmosis apparatus. The two energy recovering towers which are connected in parallel alternately operate, energy recovery can be realized by operating only one four-way valve to switch the seawater in the energy recovering device, moreover, the switching time is shortened and the system operation is smoother.
Description
Technical field
The utility model relates to the sea water desalinating plant field.
Background technology
Seawater (brackish water) desalination techniques (to call sea water desaltination in the following text) also claims sea water desalinization, is exactly the technology with salt in the seawater and water sepn.
The method of sea water desaltination is mainly divided distillation method and reverse osmosis method.Wherein distillation method is with the seawater heating evaporation, makes vapor condensation obtain the process of fresh water again.Reverse osmosis technology is the film that utilizes semi-transparent performance, under the effect that applies the pressure that is higher than the penetration of sea water pressure, make the water in the aqueous solution see through reverse osmosis film, and salt and impurity is dammed to get off, thereby reaches the purpose of desalination or concentrating and separating.Reverse osmosis technology is owing to no phase transformation, and it is low to consume energy, and has occupied 39.5% share in sea water desaltination market, the world.
The unique power consumption of reverse osmosis seawater desalting is the required power consumption of working pressure that seawater is forced into system.The rate of recovery of seawater reverse osmosis permeable system is usually about 40%, and in order to reduce the energy consumption of reverse osmosis, it is particularly necessary to reclaim the energy that reverse osmosis concentrated salt solution carries.
The energy that tower positive displacement energy recycle device can carry strong brine is reclaimed more than 90%, and the ton water current consumption that makes reverse osmosis unit produce water drops to below the 2.4kWh/m3 fresh water.But because its used switch valve is more, valve switches poor synchronization, and valve is long switching time, often makes the operation of system fluctuation occur, causes operation bad.
Summary of the invention
Technical problem to be solved in the utility model is, the recuperator of the double tower type in a kind of reverse osmosis desalination device is provided, and this withdrawer has simple to operate, and process is steady, the characteristics that energy recovery efficiency is high.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the double tower type recuperator in the reverse osmosis desalination device comprises the energy recovery tower A and the energy recovery tower B of existing side by side, charging seawater pipe 4 is connected with the cat head of energy recovery tower B with energy recovery tower A by two vacuum breaker of only import but no export, the pipeline that is connected the reverse osmosis topping-up pump by two vacuum breaker of only export but no import is arranged at the top of energy recovery tower A and energy recovery tower B, the pipeline of the bottom of two energy recovery towers is connected with two interfaces of four-way valve, other two interfaces of four-way valve are connected to the concentrated seawater mouth and the discharge outlet of reverse osmosis unit, the spool of four-way valve is provided with two rotation gears and puts, when the spool of four-way valve is in a certain gear, the pipeline that all makes one of them energy recovery tower bottom is in connected state by the concentrated seawater mouth of four-way valve and reverse osmosis unit, and the pipeline of another energy recovery tower bottom and discharge outlet are in connected state.
The beneficial effects of the utility model are: the alternation of two energy recovery towers in parallel is set, only operates a four way valve, just can realize energy recovery, carry out the switching of seawater in the recuperator, and shorten greatly switching time, the operation of system is more steady.
Description of drawings
Fig. 1 is the structural representation of double tower type recuperator.
In the drawings:
1. energy recovery tower A 2. energy recovery tower B
3. four-way valve 4. charging seawater pipes
5. vacuum breaker 6. vacuum breaker
7. vacuum breaker 8. vacuum breaker
9. the pipeline of the bottom of the pipeline 10.A energy recovery tower of reverse osmosis topping-up pump
11.B the concentrated seawater mouth of pipeline 12. reverse osmosis units of the bottom of energy recovery tower
13. discharge outlet
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail: Fig. 1 is the structural representation of double tower type recuperator.Comprise energy recovery tower A1, energy recovery tower B2 and the four-way valve 3 of existing side by side.The pressure conversion of the pressure that the energy recovery tower is finished reverse osmosis concentrated seawater and the seawater that enters the energy recovery tower, is finished the switching of the strong brine discharging after the pressure conversion at seawater output after the seawater charging of four-way valve 3 control energy recovery towers, reverse osmosis concentrated salt solution (band is pressed) charging, the supercharging.
The structure of the double tower type recuperator in the reverse osmosis desalination device comprises the energy recovery tower A1 and the energy recovery tower B2 of existing side by side, charging seawater pipe 4 is by two vacuum breaker 5 of only import but no export, 6 are connected with the cat head of energy recovery tower B2 with energy recovery tower A1, the top of energy recovery tower A 1 and energy recovery tower B2 is by two vacuum breaker 7 of only export but no import, 8 connect the pipeline 9 of reverse osmosis topping-up pump, the pipeline 10 of the bottom of two energy recovery towers, 11 are connected with two interfaces of four-way valve 3, other two interfaces of four-way valve 3 are connected to the concentrated seawater mouth 12 and the discharge outlet 13 of reverse osmosis unit, the spool of four-way valve 3 is provided with two rotation gears and puts, when the spool of four-way valve 3 is in a certain gear, the pipeline that all makes one of them energy recovery tower bottom is in connected state by the concentrated seawater mouth 12 of four-way valve 3 and reverse osmosis unit, and the pipeline of another energy recovery tower bottom and discharge outlet 13 are in connected state.
The principle of work of double tower type recuperator is: as shown in Figure 1, the charging seawater enters energy recovery tower B2 by the vacuum breaker 6 of charging seawater pipe 4 by the only import but no export on energy recovery tower B2 top, the pipeline 11 of strong brine by the bottom of B energy recovery tower of having finished in the tower after the pressure conversion entered four-way valve 3, then by discharge outlet 13 dischargings.Reverse osmosis this moment band presses concentrated seawater to enter four-way valve 3 by the concentrated seawater mouth 12 of reverse osmosis unit, pipeline by energy recovery tower A1 bottom enters energy recovery tower A1 again, because reverse osmosis concentrated seawater has higher pressure, make that seawater also obtains pressure among the energy recovery tower A1, the seawater vacuum breaker 5 of the only import but no export at energy recovery tower A1 top cuts out, the charging seawater stops to enter energy recovery tower A1, and vacuum breaker 7 energy recovery tower A1 top only export but no import, that connect the import of reverse osmosis topping-up pump is opened, and discharges the pipeline 9 that seawater with pressure enters the reverse osmosis topping-up pump.When four-way valve 3 gears switch, the function of energy recovery tower A, B alternately, the charging seawater enters energy recovery tower A1 by the vacuum breaker 5 of charging seawater pipe 4 by the only import but no export on energy recovery tower A1 top, the pipeline 10 of strong brine bottom energy recovery tower A1 of having finished in the tower after pressure is changed entered four-way valve 3, then by discharge outlet 13 dischargings.Reverse osmosis this moment band presses concentrated seawater to enter four-way valve 3 by the concentrated seawater mouth 12 of reverse osmosis unit, pipeline 11 by energy recovery tower B2 bottom enters energy recovery tower B2 again, because reverse osmosis concentrated seawater has higher pressure, make that seawater also obtains pressure among the energy recovery tower B2, the seawater vacuum breaker 6 of the only import but no export at energy recovery tower B2 top cuts out, the charging seawater stops to enter energy recovery tower B2, and energy recovery tower B2 top only export but no import, the vacuum breaker 8 that connects the import of reverse osmosis topping-up pump is opened, and discharges the pipeline 9 that seawater with pressure enters the reverse osmosis topping-up pump.The four way valve gear switches at every turn, and the function of double tower type recuperator energy recovery tower A, B exchanges mutually, has an energy recovery tower that the pressure of reverse osmosis concentrated seawater is converted to the pressure of charging seawater all the time, the seawater of output pressurize.Finish the transfer of pressure that reverse osmosis concentrated salt solution carries thus, reduce the energy expenditure of reverse osmosis seawater desalting to the charging seawater.
Owing to only operate a four-way valve 3 and just can finish above-mentioned energy recovery work, to carry out the switching of seawater in the recuperator, and shorten greatly switching time, the operation of system is more steady.
Present embodiment is installed in the parts of two energy recovery towers on the pedestal, has pipeline to link to each other between the different parts.The energy that double tower type recuperator in the reverse osmosis desalination device can carry strong brine is reclaimed more than 90%.
Claims (1)
1. the double tower type recuperator in the reverse osmosis desalination device, it is characterized in that: this double tower type recuperator comprises the energy recovery tower A (1) and the energy recovery tower B (2) of existing side by side, charging seawater pipe (4) is by two vacuum breaker (5 of only import but no export, 6) be connected with the cat head of energy recovery tower B (2) with energy recovery tower A (1), two vacuum breaker (7 by only export but no import are arranged at the top of energy recovery tower A (1) and energy recovery tower B (2), 8) pipeline (9) of connection reverse osmosis topping-up pump, the pipeline (10 of the bottom of two energy recovery towers, 11) be connected with two interfaces of four-way valve (3), other two interfaces of four-way valve (3) are connected to the concentrated seawater mouth (12) and the discharge outlet (13) of reverse osmosis unit, the spool of four-way valve (3) is provided with two rotation gears and puts, when the spool of four-way valve (3) is in a certain gear, the pipeline that all makes one of them energy recovery tower bottom is in connected state by the concentrated seawater mouth (12) of four-way valve (3) and reverse osmosis unit, and the pipeline of another energy recovery tower bottom and discharge outlet (13) are in connected state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200254837U CN2775039Y (en) | 2005-03-28 | 2005-03-28 | Double tower type energy recovery device in reverse osmosis seawater desalting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200254837U CN2775039Y (en) | 2005-03-28 | 2005-03-28 | Double tower type energy recovery device in reverse osmosis seawater desalting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2775039Y true CN2775039Y (en) | 2006-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200254837U Expired - Fee Related CN2775039Y (en) | 2005-03-28 | 2005-03-28 | Double tower type energy recovery device in reverse osmosis seawater desalting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2775039Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019144A (en) * | 2009-09-11 | 2011-04-20 | 株式会社东芝 | Power recovery apparatus |
| CN101708877B (en) * | 2009-12-21 | 2011-06-01 | 北京市可持续发展促进会 | Energy reclaimable reverse osmosis process and energy reclaiming device thereof |
| CN102588355A (en) * | 2012-02-08 | 2012-07-18 | 北京海思清膜科技有限公司 | Liquid-liquid pressure exchange device and application method thereof |
-
2005
- 2005-03-28 CN CNU2005200254837U patent/CN2775039Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019144A (en) * | 2009-09-11 | 2011-04-20 | 株式会社东芝 | Power recovery apparatus |
| CN101708877B (en) * | 2009-12-21 | 2011-06-01 | 北京市可持续发展促进会 | Energy reclaimable reverse osmosis process and energy reclaiming device thereof |
| CN102588355A (en) * | 2012-02-08 | 2012-07-18 | 北京海思清膜科技有限公司 | Liquid-liquid pressure exchange device and application method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Cheng Fang Document name: Notification of Termination of Patent Right |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |