CN109305720A - A kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery and process for desalinating seawater based on it - Google Patents
A kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery and process for desalinating seawater based on it Download PDFInfo
- Publication number
- CN109305720A CN109305720A CN201811418867.3A CN201811418867A CN109305720A CN 109305720 A CN109305720 A CN 109305720A CN 201811418867 A CN201811418867 A CN 201811418867A CN 109305720 A CN109305720 A CN 109305720A
- Authority
- CN
- China
- Prior art keywords
- pressure
- seawater
- energy exchanger
- outlet
- reverse osmosis
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery and based on its process for desalinating seawater, including sea water supply pump, high-pressure pump, two groups of pressure energy exchangers and membrane module, seawater pumps pressurization input system by sea water supply, pressure energy is passed to one low pressure seawater in A pressure energy exchanger by high-pressure thick salt, and pressure energy is passed to another strand of low pressure seawater in B pressure energy exchanger after this strand of seawater boost.The invention proposes a kind of reverse osmosis seawater desalination systems of novel two-stage hydraulic recovery, it can be carried out two-stage hydraulic recovery to the pressure of high-pressure thick salt using two groups of pressure energy reclaimers to utilize, reduce the use of booster pump, can the flexible modulation reverse osmosis seawater desalination system water rate of recovery, have the advantages that compact-sized, flexible operation, energy-efficient.
Description
Technical field
The invention belongs to field of sea water desalting technology, a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery and it is based on
Its process for desalinating seawater.
Background technique
Reverse-osmosis Seawater Desalination Technology is that seawater is pressurizeed using high-pressure pump, its pressure is made to reach required operating pressure,
Then the seawater after making pressurization, which is passed through in reverse osmosis membrane assembly, carries out permeability and separation, becomes product through the desalination water of reverse osmosis membrane
Water, and the high-pressure thick salt discharge system of reverse osmosis membrane is not penetrated.
Improve the important channel that counter-infiltration system technique is the optimization of impervious desalination system performance.Specifically, Chinese patent
(CN203402976U) a kind of recyclable counter-infiltration system is disclosed, raw water box is connected to the filter by conduit, and filter is logical
It crosses booster pump to connect with permeability apparatus, the concentrated water outlet of permeability apparatus is connect with raw water box, by the way that concentrated water is re-injected raw water
The utilization rate of water resource can be improved in case；Chinese patent (CN106145267A) discloses a kind of seawater desalination system by film method, including
High-pressure pump, membrane module, booster pump, energy recycle device etc. are overpressurized to send to membrane module and be seeped by pretreated seawater
The pressure energy for the high-pressure thick salt that reverse osmosis membrane assembly is discharged, is passed to sea to be pressurized by energy recycle device by separation thoroughly
Water, and by the pressure drop of booster pump supplement loss.
Although the technical solution of two above patent disclosure proposes process modification side to reverse osmosis seawater desalination system
Method reduces the energy consumption of unit product water.But the former does not use hydraulic recovery technology, and system energy utilization rate is not still high；Afterwards
Person's system is complex, comprising devices such as booster pumps, increases the floor space of equipment investment cost.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of reverse osmosis of two-stage hydraulic recovery
Saturating seawater desalination system and the process for desalinating seawater based on it, the system is using two groups of pressure energy reclaimers to high-pressure thick
The pressure of salt water can be carried out the utilization of two-stage hydraulic recovery, and which has a compact structure and a reasonable design is energy-efficient using simplicity.
In order to achieve the above object, the present invention is achieved by the following scheme:
The invention discloses a kind of reverse osmosis seawater desalination systems of two-stage hydraulic recovery, including sea water supply pump, A pressure
It can exchanger, B pressure energy exchanger and membrane module；High-pressure pump is additionally provided between B pressure energy exchanger and membrane module；
The outlet of sea water supply pump is divided into two-way, connects A pressure energy exchanger through A low pressure inlet all the way, and another way is low through B
It is pressed into mouth connection B pressure energy exchanger；
The A high-pressure outlet of A pressure energy exchanger is connected with the B high-pressure inlet of B pressure energy exchanger, for conveying high-pressure sea
Water；The B low tension outlet and B high-pressure outlet of B pressure energy exchanger pass through the water inlet of piping connection to high-pressure pump, high-pressure pump respectively
Water outlet be connected with the water inlet pipe of membrane module；
Membrane module is connected with two-way outlet pipe, all the way for exporting the desalination water through reverse osmosis membrane, another way and A pressure
The A high-pressure inlet of energy exchanger is connected, for not penetrating the high-pressure thick salt of reverse osmosis membrane to the conveying of A pressure energy exchanger.
Preferably, the flow of the high-pressure thick salt and high pressure sea water that are passed through A pressure energy exchanger is equal；
A pressure energy exchanger is handed over using rotary pressure energy exchanger, valve-regulated pressure energy exchanger, slide sheet type pressure energy
Parallel operation or hydraulic turbine.
Preferably, the pressure of the two stock market water flowed out from the B low tension outlet and B high-pressure outlet of B pressure energy exchanger is equal.
Preferably, be passed through the flow-rate ratio of two stock market water of B pressure energy exchanger according to the water rate of recovery of seawater desalination system into
Row is adjusted.
The invention also discloses the sea water desalination processing sides of the reverse osmosis seawater desalination system of above-mentioned two-stage hydraulic recovery
Method, comprising the following steps:
1) seawater input sea water supply pump to be processed is subjected to pressurized treatment, one pressurized low pressure seawater passes through A
Low pressure inlet flows into A pressure energy exchanger, and pressurized another strand of low pressure seawater flows into B pressure energy by B low pressure inlet and hand over
In parallel operation；
2) A pressure energy exchanger is not flowed by A high-pressure inlet through the high-pressure thick salt of the reverse osmosis membrane in membrane module,
High-pressure thick salt does work to the low pressure seawater of inflow in A pressure energy exchanger, the strong brine pressure reduction conduct after acting
Waste water is flowed out from A low tension outlet, and the seawater pressure after acting flows out after increasing from A high-pressure outlet；
3) high pressure sea water after above-mentioned pressure rise is flowed into B pressure energy exchanger by B high-pressure inlet, is supplied through seawater
To the low pressure seawater acting of pump pressurized treatment, the high pressure sea water pressure after acting is lowered and flows out from B low tension outlet, low
Pressure seawater pressure is raised and flows out from B high-pressure outlet；
4) high-pressure pump is flowed into after converging from the seawater that B low tension outlet and B high-pressure outlet flow out, is inputted after high-pressure pump is pressurized
Membrane module carries out permeability and separation, and a part of seawater becomes desalination water through reverse osmosis membrane and flows out through pipeline, and remainder does not penetrate
The high-pressure thick salt of reverse osmosis membrane flows into A pressure energy exchanger from A high-pressure inlet, completes circulation, until Seawater Treatment to be processed
It finishes or system is out of service.
The invention also discloses a kind of reverse osmosis seawater desalination systems of two-stage hydraulic recovery, including sea water supply pump, A pressure
Power energy exchanger, B pressure energy exchanger and membrane module；High-pressure pump is additionally provided between sea water supply pump and B pressure energy exchanger；
The outlet of sea water supply pump is divided into two-way, connects A pressure energy exchanger, another way connection through A low pressure inlet all the way
The water outlet of the water inlet of high-pressure pump, high-pressure pump connects B pressure energy exchanger through B low pressure inlet；
The A high-pressure outlet of A pressure energy exchanger is connected with the B high-pressure inlet of B pressure energy exchanger, for conveying high-pressure sea
Water；The B low tension outlet and B high-pressure outlet of B pressure energy exchanger pass through the water inlet pipe of piping connection to membrane module respectively.
Membrane module is connected with two-way outlet pipe, all the way for exporting the desalination water through reverse osmosis membrane, another way and A pressure
The A high-pressure inlet of energy exchanger is connected, for not penetrating the high-pressure thick salt of reverse osmosis membrane to the conveying of A pressure energy exchanger.
Preferably, the pressure of the seawater flowed out from the B low tension outlet and B high-pressure outlet of B pressure energy exchanger is equal.
Preferably, the two stock market water flows for being passed through B pressure energy exchanger are equal；B pressure energy exchanger is using rotary pressure
Power energy exchanger, valve-regulated pressure energy exchanger, slide sheet type pressure energy exchanger or hydraulic turbine.
Preferably, the high-pressure thick salt of A pressure energy exchanger and the flow-rate ratio of high pressure sea water are passed through according to sea water desalination system
The water rate of recovery of system is adjusted.
The invention also discloses at the sea water desalination of the reverse osmosis seawater desalination system based on above-mentioned two-stage hydraulic recovery
Reason method, which comprises the following steps:
1) seawater input sea water supply pump to be processed is subjected to pressurized treatment, one pressurized low pressure seawater passes through A
Low pressure inlet flow into A pressure energy exchanger in, pressurized another strand of low pressure seawater by B low pressure inlet flow into high-pressure pump in into
Row pressurization；
2) A pressure energy exchanger is not flowed by A high-pressure inlet through the high-pressure thick salt of the reverse osmosis membrane in membrane module,
High-pressure thick salt does work to the low pressure seawater of inflow in A pressure energy exchanger, the strong brine pressure reduction conduct after acting
Waste water is flowed out from A low tension outlet, and the seawater pressure after acting flows out after increasing from A high-pressure outlet；
3) high pressure sea water after above-mentioned pressure rise is flowed into B pressure energy exchanger by B high-pressure inlet, to through high-pressure pump
The low pressure seawater of pressurized treatment does work, and the high pressure sea water pressure after acting is lowered and flows out from B low tension outlet, low pressure sea
Water pressure is raised and flows out from B high-pressure outlet；
4) membrane module, which is flowed into, after converging from the seawater that B low tension outlet and B high-pressure outlet flow out carries out permeability and separation, a part
Seawater becomes desalination water through reverse osmosis membrane and flows out through pipeline, and remainder does not penetrate the high-pressure thick salt of reverse osmosis membrane from A high
It is pressed into mouth and flows into A pressure energy exchanger, complete circulation, until Seawater Treatment to be processed finishes or system is out of service.
Compared with prior art, the invention has the following advantages:
The reverse osmosis seawater desalination system of two-stage hydraulic recovery disclosed by the invention, including sea water supply pump, high-pressure pump, two
Group pressure energy exchanger and membrane module, seawater are exchanged by input system after sea water supply pump pressurization, high-pressure thick salt in A pressure energy
Pressure energy is passed into one low pressure seawater in device, passes to pressure energy in B pressure energy exchanger after this strand of seawater boost
Another strand of low pressure seawater.Seawater desalination system of the invention is compact-sized, simple and flexible, energy-efficient using simplicity.Firstly,
Compared to the use that conventional reverse osmosis seawater desalination system reduces booster pump, equipment investment and place space are saved；Secondly, should
System is pressurized defeated from high-pressure pump using the pressure energy of Energy Recovery Technology recycling high-pressure thick salt using secondary hydraulic recovery technology
Extra large water stream out, greatly reduces the energy consumption of high-pressure pump.
It preferably, can be as needed to pressure energy exchanger using the slide sheet type pressure of asymmetric booster cavity and decompression cavity configuration
Power energy exchanger or hydraulic turbine, in the counter-infiltration system for the different water rate of recovery, the different desalination water salinity energy of output
Meet different process requirements.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the reverse osmosis seawater desalination system of the two-stage hydraulic recovery of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the reverse osmosis seawater desalination system of the two-stage hydraulic recovery of the embodiment of the present invention 2.
Wherein: 1 pumps for sea water supply；2 be A pressure energy exchanger；3 be B pressure energy exchanger；4 be high-pressure pump；5 be film
Component；6 be A high-pressure inlet；7 be A low tension outlet；8 be A low pressure inlet；9 be A high-pressure outlet；10 be B high-pressure inlet；11 be B
Low tension outlet；12 be B low pressure inlet；13 be B high-pressure outlet.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The invention will be described in further detail with reference to the accompanying drawing:
Embodiment 1
It is a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery disclosed in the present embodiment, comprising: sea referring to Fig. 1
Water supply pump 1, A pressure energy exchanger 2, B pressure energy exchanger 3 and membrane module 5, B pressure energy exchanger 3 and membrane module 5 it
Between be additionally provided with high-pressure pump 4.The outlet of sea water supply pump 1 is divided into two-way, connects A pressure energy exchanger 2 through A low pressure inlet 8 all the way,
Another way connects B pressure energy exchanger 3 through B low pressure inlet 12；
The A high-pressure outlet 9 of A pressure energy exchanger 2 is connected with the B high-pressure inlet 10 of B pressure energy exchanger 3, for conveying
High pressure sea water；The B low tension outlet 11 and B high-pressure outlet 13 of B pressure energy exchanger 3 pass through piping connection to high-pressure pump 4 respectively
The water outlet of water inlet, high-pressure pump 4 is connected with the water inlet pipe of membrane module 5；
Membrane module 5 is connected with two-way outlet pipe, and all the way for exporting the desalination water through reverse osmosis membrane, another way and A are pressed
The A high-pressure inlet 6 of power energy exchanger 2 is connected, for not penetrating the high-pressure thick salt of reverse osmosis membrane to the conveying of A pressure energy exchanger 2
Water.
Pressurization input system, pressurized wherein one low pressure sea are carried out by sea water supply pump 1 by pretreated seawater
Water flows into A pressure energy exchanger 2 by A low pressure inlet 8, does not pass through A high pressure through the high-pressure thick salt of 5 reverse osmosis membrane of membrane module
Import 6 flows into A pressure energy exchanger 2, and high-pressure thick salt does work to low pressure seawater in A pressure energy exchanger 2, after acting
As waste water from 7 outflow system of A low tension outlet, seawater pressure is increased to flow out from A high-pressure outlet 9 for strong brine pressure reduction；From A high
It extrudes the high pressure sea water that mouth 9 flows out and B pressure energy exchanger 3 is flowed by B high-pressure inlet 10, it is pressurized through sea water supply pump 1
Another strand of low pressure seawater inputs B pressure energy exchanger 3 by B low pressure inlet 12, and high pressure sea water is to low in B pressure energy exchanger
Seawater acting is pressed, high pressure sea water pressure reduction is flowed out from B low tension outlet 11 after acting, and low pressure seawater pressure rise is from B high
Mouth 13 is extruded to flow out；The seawater flowed out from B low tension outlet 11 and B high-pressure outlet 13 flows into high-pressure pump 4 after converging, through high-pressure pump 4
Membrane module 5 is inputted after pressurization and carries out permeability and separation, and a part becomes product water through the desalination water of reverse osmosis membrane, remaining not penetrate
The high-pressure thick salt of reverse osmosis membrane flows into A pressure energy exchanger 2 from A high-pressure inlet 6, constitutes circulation.
Specifically, the operating parameter for giving the seawater desalination system, as specific application example: by pretreated
Seawater pressure 0MPa, flow 60m3/ h is pressurized to 0.3MPa input system, pressurized wherein one low pressure by sea water supply pump 1
Seawater pressure 0.3MPa, flow 36m3/ h flows into A pressure energy exchanger 2 by A low pressure inlet 8, not reverse osmosis through membrane module 5
High-pressure thick salt pressure 5.4MPa, the flow 36m of film3/ h flows into A pressure energy exchanger 2 by A high-pressure inlet 6, in A pressure energy
High-pressure thick salt pressure 5.4MPa, flow 36m in exchanger 23/ h is to low pressure seawater pressure 0.3MPa, flow 36m3/ h acting, warp
Cross acting after strong brine pressure reduction to 0.3MPa as waste water from 7 outflow system of A low tension outlet, seawater pressure is increased to
5.145MPa is flowed out from A high-pressure outlet 9；High pressure sea water pressure 5.145MPa, the flow 36m flowed out from A high-pressure outlet 93/ h is logical
It crosses B high-pressure inlet 10 and flows into B pressure energy exchanger 3, pump 1 pressurized another burst of low pressure seawater pressure through sea water supply
0.3MPa, flow 24m3/ h inputs B pressure energy exchanger 3, the high pressure sea water in B pressure energy exchanger by B low pressure inlet 12
Pressure 5.145MPa, flow 36m3/ h is to low pressure seawater pressure 0.3MPa, flow 24m3/ h acting, the high pressure sea water after acting
Pressure reduction is flowed out to 3.147MPa from B low tension outlet 11, and low pressure seawater pressure rise to 3.147MPa is flowed from B high-pressure outlet 13
Out；The seawater flowed out from B low tension outlet 11 and B high-pressure outlet 13 converges rear pressure 3.147MPa, flow 60m3/ h flows into high pressure
Pump 4, through high-pressure pump 4 be pressurized to 5.5MPa input membrane module 5 carry out permeability and separation, a part through reverse osmosis membrane desalination water at
For product water, it is left not flow into A pressure energy exchanger 2 from A high-pressure inlet 6 through the high-pressure thick salt of reverse osmosis membrane, composition is followed
Ring.
It should be noted that above-mentioned pressure value refers both to gauge pressure, the energy of A pressure energy exchanger 2 and B pressure energy exchanger 3
Recovery efficiency is set as 95%, and ignores equipment internal leakage.
Further, the reverse osmosis seawater desalination system of the two-stage hydraulic recovery, from the B low pressure of B pressure energy exchanger 3
Outlet 11 is equal with the pressure of seawater that B high-pressure outlet 13 flows out, and the equal stream stock of two bursts of pressure flows into high-pressure pump 4 after converging.
The reverse osmosis seawater desalination system of the two-stage hydraulic recovery, be passed through A pressure energy exchanger 2 high-pressure thick salt and
The flow of seawater is equal.According to the two plume flow characteristic requirements for being passed through A pressure energy exchanger 2, A pressure energy exchanger 2 can be rotation
Rotatable pressure energy exchanger, valve-regulated pressure energy exchanger, slide sheet type pressure energy exchanger or hydraulic turbine etc..
The reverse osmosis seawater desalination system of the two-stage hydraulic recovery, adjustable two stock markets for being passed through B pressure energy exchanger 3
The flow-rate ratio of water obtains the water rate of recovery of different seawater desalination systems, adapts to different technique requirements.According to being passed through B pressure
Can exchanger 3 the requirement of two plume flow characteristics, B pressure energy exchanger 3 can for slide sheet type pressure energy exchanger or hydraulic turbine etc.,
By adjusting the structural parameters of the asymmetric booster cavity and pressure letdown chamber of slide sheet type pressure energy exchanger or hydraulic turbine, realizes and adjust
The target of flow-rate ratio.
Embodiment 2
It referring to fig. 2, is a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery disclosed in the present embodiment, including seawater
Supply pump 1, A pressure energy exchanger 2, B pressure energy exchanger 3 and membrane module 5, unlike the first embodiment, high-pressure pump 4 can also
Be placed in sea water supply pump 1 after, before B pressure energy exchanger 3.
The outlet of sea water supply pump 1 is divided into two-way, connects A pressure energy exchanger 2 through A low pressure inlet 8 all the way, and another way connects
The water inlet of high-pressure pump 4 is connect, the water outlet of high-pressure pump 4 connects B pressure energy exchanger 3 through B low pressure inlet 12；
The A high-pressure outlet 9 of A pressure energy exchanger 2 is connected with the B high-pressure inlet 10 of B pressure energy exchanger 3, for conveying
High pressure sea water；The B low tension outlet 11 and B high-pressure outlet 13 of B pressure energy exchanger 3 pass through piping connection to membrane module 5 respectively
Water inlet pipe；
Membrane module 5 is connected with two-way outlet pipe, and all the way for exporting the desalination water through reverse osmosis membrane, another way and A are pressed
The A high-pressure inlet 6 of power energy exchanger 2 is connected, for not penetrating the high-pressure thick salt of reverse osmosis membrane to the conveying of A pressure energy exchanger 2
Water.
Pressurization input system, pressurized wherein one low pressure sea are carried out by sea water supply pump 1 by pretreated seawater
Water flows into A pressure energy exchanger 2 by A low pressure inlet 8, does not pass through A high pressure through the high-pressure thick salt of 5 reverse osmosis membrane of membrane module
Import 6 flows into A pressure energy exchanger 2, and high-pressure thick salt does work to low pressure seawater in A pressure energy exchanger 2, after acting
As waste water from 7 outflow system of A low tension outlet, seawater pressure is increased to flow out from A high-pressure outlet 9 for strong brine pressure reduction；From A high
It extrudes the high pressure sea water that mouth 9 flows out and B pressure energy exchanger 3 is flowed by B high-pressure inlet 10, it is pressurized through sea water supply pump 1
Another strand of low pressure seawater flows into high-pressure pump 4 and is pressurized, and then inputs B pressure energy exchanger 3 by B low pressure inlet 12, presses in B
High pressure sea water does work to low pressure seawater in power energy exchanger 3, and high pressure sea water pressure reduction is flowed from B low tension outlet 11 after acting
Out, low pressure seawater pressure rise is flowed out from B high-pressure outlet 13；The seawater flowed out from B low tension outlet 11 and B high-pressure outlet 13 converges
Input membrane module 5 carries out permeability and separation afterwards, and a part becomes product water through the desalination water of reverse osmosis membrane, is left not penetrate reverse osmosis
The high-pressure thick salt of permeable membrane flows into A pressure energy exchanger 2 from A high-pressure inlet 6, constitutes circulation.
Specifically, the operating parameter of the seawater desalination system is given, as an embodiment of the present invention: by pre- place
Seawater pressure 0MPa, the flow 60m of reason3/ h is pressurized to 0.3MPa input system by sea water supply pump 1, it is pressurized wherein one
Low pressure seawater pressure 0.3MPa, flow 30m3/ h flows into A pressure energy exchanger 2 by A low pressure inlet 8, not anti-through membrane module 5
High-pressure thick salt pressure 5.4MPa, the flow 36m of permeable membrane3/ h flows into A pressure energy exchanger 2 by A high-pressure inlet 6, presses in A
High-pressure thick salt pressure 5.4MPa, flow 36m in power energy exchanger 23/ h is to low pressure seawater pressure 0.3MPa, flow 30m3/ h is done
Function, after acting strong brine pressure reduction to 0.3MPa as waste water from 7 outflow system of A low tension outlet, seawater pressure raising
It is flowed out to 6.11MPa from A high-pressure outlet 9；High pressure sea water pressure 6.11MPa, the flow 30m flowed out from A high-pressure outlet 93/ h is logical
It crosses B high-pressure inlet 10 and flows into B pressure energy exchanger 3, pump 1 pressurized another burst of low pressure seawater pressure through sea water supply
0.3MPa, flow 30m3/ h flows into high-pressure pump 4 and is pressurized to 4.92MPa, then inputs B pressure energy by B low pressure inlet 12 and hands over
Parallel operation 3, high pressure sea water pressure 6.11MPa, flow 30m in B pressure energy exchanger 33/ h to low pressure seawater pressure 4.92MPa,
Flow 30m3/ h acting, high pressure sea water pressure reduction is flowed out to 5.5MPa from B low tension outlet 11 after acting, low pressure seawater pressure
Power is increased to 5.5MPa and flows out from B high-pressure outlet 13；The seawater flowed out from B low tension outlet 11 and B high-pressure outlet 13 converges rear defeated
Enter membrane module 5 and carry out permeability and separation, a part becomes product water through the desalination water of reverse osmosis membrane, is left not penetrate reverse osmosis membrane
High-pressure thick salt from A high-pressure inlet 6 flow into A pressure energy exchanger 2, constitute circulation.
It should be noted that above-mentioned pressure value refers both to gauge pressure, the energy of A pressure energy exchanger 2 and B pressure energy exchanger 3
Recovery efficiency is set as 95%, and ignores equipment internal leakage.
Further, the reverse osmosis seawater desalination system of the two-stage hydraulic recovery, from the B low pressure of B pressure energy exchanger 3
Outlet 11 is equal with the pressure of seawater that B high-pressure outlet 13 flows out, and the equal stream stock of two bursts of pressure flows into membrane module 5 after converging.
The reverse osmosis seawater desalination system of the two-stage hydraulic recovery, the adjustable strong brine for being passed through A pressure energy exchanger 2
With the flow-rate ratio of seawater, the water rate of recovery of different seawater desalination systems is obtained, adapts to different technique requirements.According to being passed through A
The two plume flow characteristics requirement of pressure energy exchanger 2, A pressure energy exchanger 2 can be saturating for slide sheet type pressure energy exchanger or fluid power
Equality, it is real by adjusting the structural parameters of the asymmetric booster cavity and pressure letdown chamber of slide sheet type pressure energy exchanger or hydraulic turbine
Now adjust the target of flow-rate ratio.
The reverse osmosis seawater desalination system of the two-stage hydraulic recovery is passed through two stock market water flows of B pressure energy exchanger 3
It is equal.According to the two plume flow characteristic requirements for being passed through B pressure energy exchanger 3, B pressure energy exchanger 3 can be rotary pressure energy
Exchanger, valve-regulated pressure energy exchanger, slide sheet type pressure energy exchanger or hydraulic turbine etc..
The reverse osmosis seawater desalination system of two-stage hydraulic recovery of the present invention, using two groups of pressure energy reclaimers to height
The pressure of pressure strong brine can be carried out two-stage hydraulic recovery.Present invention has an advantage that
1 proposes a kind of reverse osmosis seawater desalination system that desalination water is produced using two-stage pressure energy reclaimer, has
Compact-sized, simple and flexible uses easy, energy-efficient advantage；
2 compare conventional reverse osmosis seawater desalination system, can reduce the use of booster pump, save the throwing of booster pump equipment cost
Money and occupied space；
3 recycle the pressure energy of high-pressure thick salt using Energy Recovery Technology, are pressurized using secondary hydraulic recovery technology from height
The extra large water stream of press pump output, reduces the energy consumption of high-pressure pump；
4 can as needed be handed over pressure energy exchanger using the slide sheet type pressure energy of asymmetric booster cavity and decompression cavity configuration
Parallel operation or hydraulic turbine, in the counter-infiltration system for different reverse osmosis membrane transmitances, the desalination water salinity of output is able to satisfy
Different process requirements.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery, which is characterized in that pump (1), A pressure including sea water supply
It can exchanger (2), B pressure energy exchanger (3) and membrane module (5)；It is also set between B pressure energy exchanger (3) and membrane module (5)
There are high-pressure pump (4)；
The outlet of sea water supply pump (1) is divided into two-way, connects A pressure energy exchanger (2) through A low pressure inlet (8) all the way, another way
B pressure energy exchanger (3) are connected through B low pressure inlet (12)；
The A high-pressure outlet (9) of A pressure energy exchanger (2) is connected with the B high-pressure inlet (10) of B pressure energy exchanger (3), is used for
Conveying high-pressure seawater；The B low tension outlet (11) and B high-pressure outlet (13) of B pressure energy exchanger (3) pass through piping connection extremely respectively
The water outlet of the water inlet of high-pressure pump (4), high-pressure pump (4) is connected with the water inlet pipe of membrane module (5)；
Membrane module (5) is connected with two-way outlet pipe, all the way for exporting the desalination water through reverse osmosis membrane, another way and A pressure
The A high-pressure inlet (6) of energy exchanger (2) is connected, for not penetrating the high pressure of reverse osmosis membrane to A pressure energy exchanger (2) conveying
Strong brine.
2. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 1, which is characterized in that be passed through A pressure
The high-pressure thick salt of power energy exchanger (2) and the flow of high pressure sea water are equal；
A pressure energy exchanger (2) is handed over using rotary pressure energy exchanger, valve-regulated pressure energy exchanger, slide sheet type pressure energy
Parallel operation or hydraulic turbine.
3. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 1, which is characterized in that from B pressure
The pressure of two stock market water of B low tension outlet (11) and B high-pressure outlet (13) outflow of energy exchanger (3) is equal.
4. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 1, which is characterized in that be passed through B pressure
The flow-rate ratio of (3) two stock market water of power energy exchanger is adjusted according to the water rate of recovery of seawater desalination system.
5. the seawater based on the reverse osmosis seawater desalination system of two-stage hydraulic recovery described in any one of Claims 1 to 4
Desalt processing method, which comprises the following steps:
1) seawater input sea water supply pump (1) to be processed is subjected to pressurized treatment, one pressurized low pressure seawater is low by A
It is pressed into mouth (8) to flow into A pressure energy exchanger (2), pressurized another strand of low pressure seawater flows into B by B low pressure inlet (12)
In pressure energy exchanger (3)；
2) exchange of A pressure energy is not flowed by A high-pressure inlet (6) through the high-pressure thick salt of the reverse osmosis membrane in membrane module (5)
Device (2) does work in low pressure seawater of A pressure energy exchanger (2) the interior high-pressure thick salt to inflow, the strong brine pressure after acting
It reduces and is flowed out as waste water from A low tension outlet (7), the seawater pressure after acting flows out after increasing from A high-pressure outlet (9)；
3) high pressure sea water after above-mentioned pressure rise is flowed into B pressure energy exchanger (3) by B high-pressure inlet (10), to through sea
The low pressure seawater of water supply pump (1) pressurized treatment does work, and the high pressure sea water pressure after acting is lowered and from B low tension outlet
(11) it flows out, low pressure seawater pressure is raised and flows out from B high-pressure outlet (13)；
4) high-pressure pump (4) are flowed into after converging from the seawater that B low tension outlet (11) and B high-pressure outlet (13) flow out, through high-pressure pump (4)
Membrane module (5) are inputted after pressurization and carry out permeability and separation, and a part of seawater becomes desalination water through reverse osmosis membrane and flows out through pipeline, remains
Remaining part point does not flow into A pressure energy exchanger (2) from A high-pressure inlet (6) through the high-pressure thick salt of reverse osmosis membrane, completes circulation,
Until Seawater Treatment to be processed finishes or system is out of service.
6. a kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery, which is characterized in that pump (1), A pressure including sea water supply
It can exchanger (2), B pressure energy exchanger (3) and membrane module (5)；Between sea water supply pump (1) and B pressure energy exchanger (3)
It is additionally provided with high-pressure pump (4)；
The outlet of sea water supply pump (1) is divided into two-way, connects A pressure energy exchanger (2) through A low pressure inlet (8) all the way, another way
The water inlet of high-pressure pump (4) is connected, the water outlet of high-pressure pump (4) connects B pressure energy exchanger (3) through B low pressure inlet (12)；
The A high-pressure outlet (9) of A pressure energy exchanger (2) is connected with the B high-pressure inlet (10) of B pressure energy exchanger (3), is used for
Conveying high-pressure seawater；The B low tension outlet (11) and B high-pressure outlet (13) of B pressure energy exchanger (3) pass through piping connection extremely respectively
The water inlet pipe of membrane module (5)；
Membrane module (5) is connected with two-way outlet pipe, all the way for exporting the desalination water through reverse osmosis membrane, another way and A pressure
The A high-pressure inlet (6) of energy exchanger (2) is connected, for not penetrating the high pressure of reverse osmosis membrane to A pressure energy exchanger (2) conveying
Strong brine.
7. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 6, which is characterized in that from B pressure
The pressure of the seawater of B low tension outlet (11) and B high-pressure outlet (13) outflow of energy exchanger (3) is equal.
8. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 6, which is characterized in that be passed through B pressure
Two stock market water flows of power energy exchanger (3) are equal；B pressure energy exchanger (3) is using rotary pressure energy exchanger, valve-regulated
Pressure energy exchanger, slide sheet type pressure energy exchanger or hydraulic turbine.
9. the reverse osmosis seawater desalination system of two-stage hydraulic recovery according to claim 6, which is characterized in that be passed through A pressure
The high-pressure thick salt of power energy exchanger (2) and the flow-rate ratio of high pressure sea water are adjusted according to the water rate of recovery of seawater desalination system
Section.
10. the seawater based on the reverse osmosis seawater desalination system of two-stage hydraulic recovery described in any one of claim 6~9
Desalt processing method, which comprises the following steps:
1) seawater input sea water supply pump (1) to be processed is subjected to pressurized treatment, one pressurized low pressure seawater is low by A
It is pressed into mouth (8) to flow into A pressure energy exchanger (2), pressurized another strand of low pressure seawater flows into high by B low pressure inlet (12)
Press pump is pressurized in (4)；
2) exchange of A pressure energy is not flowed by A high-pressure inlet (6) through the high-pressure thick salt of the reverse osmosis membrane in membrane module (5)
Device (2) does work in low pressure seawater of A pressure energy exchanger (2) the interior high-pressure thick salt to inflow, the strong brine pressure after acting
It reduces and is flowed out as waste water from A low tension outlet (7), the seawater pressure after acting flows out after increasing from A high-pressure outlet (9)；
3) high pressure sea water after above-mentioned pressure rise is flowed into B pressure energy exchanger (3) by B high-pressure inlet (10), to through height
The low pressure seawater of press pump (4) pressurized treatment does work, and the high pressure sea water pressure after acting is lowered and from B low tension outlet (11)
Outflow, low pressure seawater pressure are raised and flow out from B high-pressure outlet (13)；
4) membrane module (5) are flowed into after converging from the seawater that B low tension outlet (11) and B high-pressure outlet (13) flow out and carry out infiltration point
From a part of seawater becomes desalination water through reverse osmosis membrane and flows out through pipeline, and remainder does not penetrate the high-pressure thick of reverse osmosis membrane
Salt water flows into A pressure energy exchanger (2) from A high-pressure inlet (6), completes circulation, until Seawater Treatment to be processed finishes or system
It is out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418867.3A CN109305720B (en) | 2018-11-26 | 2018-11-26 | Reverse osmosis seawater desalination system with two-stage residual pressure recovery and seawater desalination treatment method based on reverse osmosis seawater desalination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418867.3A CN109305720B (en) | 2018-11-26 | 2018-11-26 | Reverse osmosis seawater desalination system with two-stage residual pressure recovery and seawater desalination treatment method based on reverse osmosis seawater desalination system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109305720A true CN109305720A (en) | 2019-02-05 |
| CN109305720B CN109305720B (en) | 2020-10-27 |
Family
ID=65222187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811418867.3A Active CN109305720B (en) | 2018-11-26 | 2018-11-26 | Reverse osmosis seawater desalination system with two-stage residual pressure recovery and seawater desalination treatment method based on reverse osmosis seawater desalination system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109305720B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047417A1 (en) * | 2019-09-11 | 2021-03-18 | 上海瑜科环境工程有限公司 | Pressure energy composite desalination process |
| CN112694180A (en) * | 2020-11-27 | 2021-04-23 | 燕山大学 | Highly integrated reverse osmosis seawater desalination system |
| CN114349195A (en) * | 2022-01-13 | 2022-04-15 | 江苏科技大学 | Marine seawater desalination system considering carbon dioxide recovery and working method |
| CN114853120A (en) * | 2022-05-09 | 2022-08-05 | 自然资源部天津海水淡化与综合利用研究所 | System for producing water according to qualities and synchronously concentrating reverse osmosis seawater |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203256009U (en) * | 2013-04-23 | 2013-10-30 | 北京中联动力技术有限责任公司 | Reverse osmosis seawater desalination vehicle with thick water energy recovery device |
| CN207375848U (en) * | 2017-09-26 | 2018-05-18 | 北京天诚同创电气有限公司 | Reverse osmosis seawater desalination system |
| CN207811322U (en) * | 2017-12-13 | 2018-09-04 | 中国船舶重工集团公司第七一一研究所 | A kind of seawater desalination system |
-
2018
- 2018-11-26 CN CN201811418867.3A patent/CN109305720B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203256009U (en) * | 2013-04-23 | 2013-10-30 | 北京中联动力技术有限责任公司 | Reverse osmosis seawater desalination vehicle with thick water energy recovery device |
| CN207375848U (en) * | 2017-09-26 | 2018-05-18 | 北京天诚同创电气有限公司 | Reverse osmosis seawater desalination system |
| CN207811322U (en) * | 2017-12-13 | 2018-09-04 | 中国船舶重工集团公司第七一一研究所 | A kind of seawater desalination system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047417A1 (en) * | 2019-09-11 | 2021-03-18 | 上海瑜科环境工程有限公司 | Pressure energy composite desalination process |
| CN112694180A (en) * | 2020-11-27 | 2021-04-23 | 燕山大学 | Highly integrated reverse osmosis seawater desalination system |
| CN114349195A (en) * | 2022-01-13 | 2022-04-15 | 江苏科技大学 | Marine seawater desalination system considering carbon dioxide recovery and working method |
| CN114853120A (en) * | 2022-05-09 | 2022-08-05 | 自然资源部天津海水淡化与综合利用研究所 | System for producing water according to qualities and synchronously concentrating reverse osmosis seawater |
| CN114853120B (en) * | 2022-05-09 | 2023-09-08 | 自然资源部天津海水淡化与综合利用研究所 | System for separating and producing water and synchronously concentrating reverse osmosis seawater |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
| CN116272373B (en) * | 2023-04-06 | 2023-09-15 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109305720B (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109305720A (en) | A kind of reverse osmosis seawater desalination system of two-stage hydraulic recovery and process for desalinating seawater based on it | |
| CN100387327C (en) | Energy-saving reverse osmosis treatment system | |
| CN208071390U (en) | Counter-infiltration system | |
| CN201161955Y (en) | Mobile sea water desalting apparatus | |
| CN106132514A (en) | Energy-recuperation system | |
| CN102951704B (en) | Reverse osmosis seawater desalination process and device thereof | |
| CN109896653A (en) | A kind of both-end produces the reverse osmosis seawater desalting high-efficiency boron-removing system of water | |
| CN207375848U (en) | Reverse osmosis seawater desalination system | |
| CN113754137A (en) | Brine refining method and device for extracting lithium from salt lake | |
| CN203007046U (en) | Nuclear plant reverse-osmosis pre-desalinized concentrated water recovery treatment device | |
| CN207076346U (en) | A kind of low energy consumption high-recovery disc tube reverse osmosis (dt-ro) device | |
| CN109095562A (en) | Reverse osmosis seawater desalting method and system | |
| CN207435108U (en) | A kind of energy recycle device of small-sized seawater desalination reverse osmosis system | |
| CN216472569U (en) | Brine refining device for extracting lithium from salt lake | |
| CN106554052A (en) | A kind of concurrent flow reverse osmosis membrane assembly, counter-infiltration system and the method for processing brackish water | |
| CN109538547A (en) | One kind being based on the recoverable flow dynode system of pressure and method | |
| CN104747545B (en) | Reverse osmosis system pressurizing and energy recycling device and pressurizing and energy recycling method | |
| CN204193792U (en) | Quiet pressure exchange system | |
| CN203886420U (en) | Separation device of series-structure membrane | |
| CN111346512B (en) | Reverse osmosis treatment method and reverse osmosis system for salt-containing water | |
| CN102507245A (en) | Test device for testing energy recovery device | |
| CN207659150U (en) | A kind of super-pressure counter-infiltration system | |
| CN207760094U (en) | Improve the counter-infiltration system of seawater desalination recovery rate | |
| CN210764798U (en) | Ultrapure water reverse osmosis system resistant to water fluctuation | |
| CN206468504U (en) | It is a kind of to be pressurized clarified water pump without electricity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210106 Address after: 221000 Shimao Square Inner Commercial Street 2, Office 1, Office 2, Building 1-910, Yunlong District, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Shifeng Enterprise Management Consulting Co.,Ltd. Address before: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Patentee before: XI'AN JIAOTONG University |