CN108506178A - A kind of energy recycle device and its hybrid system of the driving of combination temperature difference - Google Patents
A kind of energy recycle device and its hybrid system of the driving of combination temperature difference Download PDFInfo
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- CN108506178A CN108506178A CN201810261651.4A CN201810261651A CN108506178A CN 108506178 A CN108506178 A CN 108506178A CN 201810261651 A CN201810261651 A CN 201810261651A CN 108506178 A CN108506178 A CN 108506178A
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- energy
- seawater
- phase
- strong brine
- piston
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Links
- 239000013535 sea water Substances 0.000 claims abstract description 134
- 239000012267 brine Substances 0.000 claims abstract description 106
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 105
- 239000000126 substance Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000009466 transformation Effects 0.000 claims abstract description 31
- 238000010612 desalination reaction Methods 0.000 claims abstract description 27
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 20
- 238000011033 desalting Methods 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 17
- 230000001172 regenerating effect Effects 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005381 potential energy Methods 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of sea water desalting energy recovery devices and its hybrid system combining temperature difference driving, including phase transformation chamber and seawater chamber, phase transformation intracavitary is equipped with strong brine cylinder, it is equipped with phase-change working substance positioned at the phase transformation intracavitary of strong brine cylinder circumferential position, the humidity control system controlled by logical program for making phase-change working substance undergo phase transition is equipped in phase-change working substance；The strong brine with overbottom pressure after seawater reverse osmosis system is desalinated enters in strong brine cylinder；The energy of the strong brine with overbottom pressure by energy transmission the seawater raw water initial compression before desalination, adjustment seawater chamber volume and the pressure for keeping initial compression, the temperature of phase-change working substance is adjusted again, the second piston movement for making phase-change working substance undergo phase transition and driving, the seawater boost that second piston is driven into seawater chamber enter impervious desalination system.Energy recycle device provided by the present invention is combined using temperature difference driving and overbottom pressure driving, and energy recovery efficiency can reach 100% or more in theory.
Description
Technical field
The present invention relates to sea water desalination technical field of energy recovery, and in particular to a kind of energy time of combination temperature difference driving
Receiving apparatus and its hybrid system are reached for the recycling of energy in high-pressure thick salt of the sea-water reverse osmose desalination with overbottom pressure
The purpose recycled to high efficiency energy.
Background technology
One important goal of desalination technology development is to reduce operating cost, the energy consumption institute in the composition of operating cost
The proportion accounted for is maximum, and therefore, it is to reduce the most effective means of sea water desalination cost to reduce energy consumption.Wherein reverse osmosis seawater desalting is
One of the mainstream technology of sea water desalination at present, reverse osmosis seawater desalting process need to consume a large amount of electric energy and promote intake pressure to overcome
The concentrated water overbottom pressure of the osmotic pressure of water, reverse osmosis membrane discharge is up to 5.5~6.5MPa, is calculated according to 40% rate of recovery, discharge
The recycling of this part energy is become to be greatly reduced into water energy by the feed water pressure energy for also containing about 60% in strong brine
The energy consumption of reverse osmosis seawater desalting, and this purpose realization depends on and utilizes Energy Recovery Technology.
Since the seventies, as reverse osmosis technology is applied to seawater/brackish water desalination, various forms of energy regenerating dresses
Set also appearance in succession.Energy recycle device has hydraulic turbine formula energy recycle device and Work-exchange type energy recovery device two at present
Major class.Earliest energy recycle device is hydraulic turbine formula, 1 turbines of Pe1ton Whee of Calder.AG companies of Switzerland and
The Francis turbines of Pump Ginard companies, efficiency are generally 50%~70%, and principle is to drive whirlpool using strong brine
Wheel rotation is connected by axis with pump and motor, energy is delivered to the former seawater of charging, process is needed by " water pressure energy --- machine
Two step of tool energy --- water pressure energy " is converted.By improving on the basis of above, there are some unique designs, wherein most
The representative BMET turbines for having Grundfos companies of Denmark to produce directly drive the Hydraulic of pump and the production of PEI companies of the U.S.
Turbochargero is both turbine and pump integrated design, and a shaft connects two impellers, is entirely encapsulated in a shell
In body, impact blade pushes wheel rotation when strong brine flows through impeller, to drive turbine spindle to rotate.Turbine spindle directly drives increasing
Press pump work output mechanical work, the energy conversion efficiency that concentrated water energy is converted into former seawater can be improved to 65%-80%.High-pressure pump
The boost in pressure of former seawater is completed with turbine booster pump two-stage series connection, being pressurized by turbine reduces the required lift of high-pressure pump,
Reduce motor power consumption.But due to that will pass through in hydraulic turbine formula energy recycle device principle, " water pressure energy is mechanical one by one
Can water pressure energy one by one " conversion of two steps, mechanical energy loss is increased, therefore less efficient.There is a kind of new energy the eighties
Recovery technology, operation principle are " work(exchanges " by interface or spacer, and directly the pressure transmission of high-pressure thick salt is fed
Expect seawater, process is simplified, it is only necessary to which, by " water pressure energy one by one water pressure energy " step energy conversion, energy recovery efficiency can obtain
To raising.
The Work-exchange type energy recovery device applied in reverse osmosis seawater desalting engineering at present is mainly that rotator type pressure is handed over
Two class of parallel operation and plunger valve governor pressure exchanger, efficiency may be up to 90-97%.Rotator type pressure exchanger is with U.S. ERI public affairs
The PX rotator type pressure exchange energy reclaiming devices of department are representative, and principle is that high-pressure thick salt pushes circumference to be provided with multiple longitudinal ditches
The shaftless ceramic rotor rotation of slot (being similar to multiple miniature fluid cylinders).Plunger valve governor pressure exchanger is with Switzerland Calder.AG
The bis- work(exchange energy reclaiming devices of DWEER of company, the SalTec DT pressure exchangers of KSB companies of Germany, Germany Siemag
The PES pressure exchange systems of Transplan companies and the DYPREX aerodynamic pressure exchangers of Ionics companies are representative, and principle is
Using two major diameter fluid cylinders, one of fluid cylinder mesohigh concentrated water pushes piston to transfer energy to low pressure original seawater and arranges outward
Liquid, feed is pumped into low pressure original seawater fluid infusion and low-press thick water is discharged in another fluid cylinder, and two fluid cylinders are in PLC and concentrated water reversal valve
Control under alternately row mend seawater, realize and concentrated water energy be converted into the removal process of former seawater energy.Currently, both energy
For retracting device mainly by external import, cost is relatively high.
In addition, reverse osmosis membrane is very sensitive to the variation for water temperature of intaking, with the increase water flux also linear increasing of water temperature
Add, water inlet water temperature often increases 1 DEG C of (or reduction), and water yield is increased by (reduction) 2.5%~3.0%；(with 25 DEG C for standard).
The inflow temperature lowest limit of reverse osmosis membrane is 5 DEG C~8 DEG C, and infiltration rate at this time is very slow；When inflow temperature rises to 25 DEG C from 11 DEG C
When, water yield improves 50%.But when inflow temperature is higher than 30 DEG C, most of films become unstable, accelerate the speed of hydrolysis.One
As cellulose acetate film operation with keeping maximum temperature be 35 DEG C, preferably control between 25 DEG C~35 DEG C.Therefore, in the dense of discharge
In brine, not only contains overbottom pressure energy, also contain thermal energy, such as frictional heat energy caused by piston motion, existing energy
The emphasis of energy regenerating is mainly put into overbottom pressure energy regenerating by recycling, cannot recycle the thermal energy in strong brine.
Invention content
The present invention is directed to the technical issues of cannot recycling contained thermal energy in strong brine in present energy retracting device, provides
A kind of energy recycle device and its hybrid system of the driving of combination temperature difference, solve while recycling reverse osmosis seawater desalting overbottom pressure
Contained in energy and strong brine the technical issues of thermal energy, achieve the purpose that high efficiency energy recycles.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
On the one hand, the present invention provides a kind of sea water desalting energy recovery device of combination temperature difference driving, feature exists
In described device includes the phase transformation chamber being connected and seawater chamber, is equipped with a strong brine cylinder in the phase transformation chamber, is located at the dense salt
The phase transformation intracavitary of water vat circumferential position is equipped with phase-change working substance, is equipped in the phase-change working substance for making the phase-change working substance send out
The humidity control system of raw phase transformation；
It is equipped with first piston in the strong brine cylinder, second piston, the first piston and institute are equipped in the seawater chamber
Second piston is stated to be fixedly connected by piston rod；
The strong brine cylinder is equipped with strong brine import and brine outlet, and the seawater chamber is equipped with sea intake and sea
Water out；
The strong brine with overbottom pressure after seawater reverse osmosis system is desalinated enters in the strong brine cylinder, and drives
The first piston movement, drives the second piston to move, the second piston is with overbottom pressure by the first piston
Strong brine possessed by energy carry out energy transmission, the seawater raw water initial compression before desalination, then pass through the temperature tune
The temperature for saving phase-change working substance described in system adjustment, so that the phase-change working substance is undergone phase transition and drive in the seawater chamber described the
Two piston motions, being entered by the seawer outlet after the seawater boost that the second piston is driven into the seawater chamber has
The seawater reverse osmosis system of elevated pressures.
The humidity control system includes heating system and cooling system, and the liquid-gas phase transition temperature of the phase-change working substance is low
The heating temperature of strong brine temperature and the heating system in the strong brine cylinder, the solution-air phase transformation of the phase-change working substance
Temperature is higher than the cooling temperature of the cooling system.
Strong brine cylinder cavity wall is made of good Heat Conduction Material, it is preferred that can be in the row of strong brine cylinder first piston
The peripheral hardware heat pipe of journey, for the quick heat exchange between strong brine and phase-change working substance.
The pressure adjustment system communicated therewith is additionally provided on the seawater chamber, the second piston is the dense salt with overbottom pressure
Energy possessed by water carries out energy transmission, and is carried out to the seawater raw water entered by the sea intake in the seawater chamber
Initial compression adjusts system call interception volume by the pressure and keeps the initial compression pressure of the seawater intracavitary.
The pressure adjustment system includes the pressure chamber for keeping being connected to the seawater chamber, and third is equipped in the pressure chamber
Piston, the end of the pressure chamber is equipped with the elastic potential energy adjustment mechanism for adjusting the seawater chamber volume and pressure, described
Elastic potential energy adjustment mechanism is formed with the third piston and is linked.
The elastic potential energy adjustment mechanism can be integrally fixed at the pressure chamber end spring water column or meet tool
The compressed gas that body running requires.
On the other hand, the present invention also provides a kind of combination temperature difference driving sea water desalination energy regenerating hybrid system,
The hybrid system includes control device and the sea water desalting energy recovery device of multiple combination temperature differences driving, each energy
The phase transformation chamber in energy recycle device described in one in retracting device with it is described in another energy recycle device
Seawater chamber is connected by connecting line.
High pressure end position in the high pressure end position of each strong brine cylinder and/or each seawater chamber is respectively provided with
The position sensor of the first piston and second piston position is detected, the control device and each position sensor are electrical
Connection.By logic control, the transformation time for the phase transformation intracavitary that one of can make in the energy recycle device system
With the time using overbottom pressure driving of another energy recycle device mutually plan as a whole that its action time is made closely to be connected, and so on,
To which the operation for making to possess the total system device of multiple single energy recycle devices is more fast and effective.
In the case where different single energy recycle devices uses different suitable working medium, by dense after absorption heat
Brine and/or the hot fluid for being absorbed heat are also used as the cold energy source of cooling system or external cooling.
Technical solution of the present invention has the following advantages that：
A. energy recycle device provided by the present invention is combined using temperature difference driving and overbottom pressure driving, is not only recycled
The high-pressure energy in the high-pressure thick salt with overbottom pressure after seawater reverse osmosis system desalination, is also absorbed by phase-change working substance
Thermal energy in strong brine, while the thermal energy generated by friction during a part of piston motion is also absorbed, by absorbing thermal energy,
It converts the thermal energy absorbed to the kinetic energy for pushing piston motion, reduces recycling loss, to reach high efficiency energy recycling
Purpose, in the case where the useful work that it is absorbed and is converted is more than running wastage work(, energy recovery efficiency in theory can be with
Reach 100% or more.
B. the present invention in order to preferably solve incompressible seawater in seawater chamber and strong brine cylinder in volume variation and
The problem of pressure adjusts is provided with the pressure adjustment system communicated therewith on seawater chamber, and second piston is with the dense of overbottom pressure
Energy possessed by brine carries out energy transmission, and initial compression is carried out to entering the seawater raw water in seawater chamber by sea intake,
The initial compression pressure of system call interception volume and seawater intracavitary is adjusted by pressure.
C. the present invention protects to promote the endothermic effect of the sea water desalination energy regenerating hybrid system of combination temperature difference driving
The heat absorption time for demonstrate,proving phase-change working substance makes phase-change working substance fully absorb heat the heat in strong brine, by by one of energy regenerating
The sea for the sea water desalination energy regenerating list device that phase transformation driving boosting in device drives in another combination temperature difference
In water cavity.
D. the present invention, can be to enable phase one of in amount recovery system by the way that logic control is arranged in control device
The time using overbottom pressure driving of the transformation time and another energy recycle device that become intracavitary mutually plans as a whole, and keeps its action time tight
Close linking, and so on, to make to possess, the operation of whole hybrid system of multiple single energy recycle devices is more quick, has
Effect.
Description of the drawings
It, below will be to needed in specific implementation mode in order to illustrate more clearly of the specific embodiment of the invention
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is monoergic retracting device structural schematic diagram provided by the present invention；
Fig. 2 is energy-recuperation system structural schematic diagram provided by the present invention.
It is identified in figure as follows：
A- energy recycle devices
1- phase transformation chambers
2- seawater chambers
21- sea intakes, 22- seawer outlets
3- strong brine cylinders
31- strong brine imports, 32- brine outlets
4- phase-change working substances
5- humidity control systems
51- heating systems, 52- cooling systems
6- first pistons；7- second pistons；8- piston rods
9- pressure adjusts system
91- pressure chambers, 92- third pistons, 93- elastic potential energy adjustment mechanisms
10- control valves；20- strong brine water inlet pipes
30- connecting lines
40- strong brine drainpipes；50- one-way control valves；60- inlet pipelines；70- discharge pipe lines.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of sea water desalting energy recovery device with temperature difference driving, including phase
The phase transformation chamber 1 and seawater chamber 2 of connection are equipped with a strong brine cylinder 3 in phase transformation chamber 1, are located at the phase transformation chamber of 3 circumferential position of strong brine cylinder
It is equipped with phase-change working substance 4 in 1, the humidity control system 5 for making phase-change working substance 4 undergo phase transition is equipped in phase-change working substance 4；Wherein
Strong brine cylinder 3 in be equipped with first piston 6, second piston 7 is equipped in seawater chamber 2, first piston 6 passes through with second piston 7
Piston rod 8 is fixedly connected, and then realizes the linkage between first piston 6 and second piston 7；It is additionally provided on strong brine cylinder 3
Strong brine import 31 and brine outlet 32 are equipped with sea intake 21 and seawer outlet 22 on seawater chamber 2；Through sea-water reverse osmose
The strong brine with overbottom pressure after desalination system desalination enters in strong brine cylinder 3, and driving first piston 6 moves, 6 band of first piston
Dynamic second piston 7 moves, and energy possessed by the strong brine with overbottom pressure is carried out energy transmission by second piston 7, before desalination
The seawater raw water for entering seawater chamber 2 by sea intake 21 carry out initial compression, then mutually exchanged work by the adjusting of humidity control system 5
The temperature of matter 4 makes phase-change working substance 4 undergo phase transition and directly drives the movement of the second piston 7 in seawater chamber 2, driven at two strands dynamic
Under the action of power, second piston 7 is driven into the seawater boost in seawater chamber 2 and enters the higher sea of pressure by seawer outlet 22
Water impervious desalination system, to realize making full use of and converting for overbottom pressure contained by strong brine and contained thermal energy.
As shown in Figure 1, when second piston 7 is located at the lower position of seawater chamber 2, first piston 6 is located at strong brine cylinder 3
Lower part, but first piston 6 forms a chamber between the bottommost of strong brine cylinder 3, this chamber can be light for sea-water reverse osmose
Overbottom pressure strong brine in change system enters.
Preferred humidity control system 5 includes heating system 51 and cooling system 52, the liquid-of phase-change working substance 4 in the present invention
Gas phase temperature is less than the heating temperature of strong brine temperature and heating system 51 in strong brine cylinder 3, the solution-air of phase-change working substance 4
Phase transition temperature is higher than the cooling temperature of cooling system 52, and maximum temperature of the phase-change working substance 4 provided in heating system 51 issues
Liquid-gas phase transformation is given birth to, generated pressure should be greater than normal reverse osmosis required pressure at this time.When strong brine is from strong brine import
31 when entering in strong brine cylinder 3, and phase-change working substance 4 can absorb the thermal energy in strong brine, and undergo phase transition, this partial heat energy is turned
It has been melted into the potential energy for pushing second piston 7 to do work.
In order to which heat possessed by the strong brine after sea water desalination is conducted to phase-change working substance 4, the cavity wall of strong brine cylinder 3 is adopted
It is made of the material of good heat conductivity, the cavity wall of such seawater chamber 2 is more conducive to phase-change working substance 4 and absorbs heat from strong brine.It is excellent
The quick heat exchange of heat pipe progress is arranged except the piston stroke of strong brine cylinder 3 in selection of land between phase-change working substance 4 and strong brine.
The heat of the middle low-temperature heat source in nature and human being's production life process may be used in heating system 51 in the present invention
Fluid can also use heat pipe or use electrical heating.Cooling system 52 in the present invention may be used less than used phase transformation
The cold fluid or heat pipe or evaporator of the solution-air phase transition temperature of working medium 4, which is not described herein again.
The present invention in order to preferably solve incompressible seawater in seawater chamber 2 and strong brine cylinder 3 in volume variation and
The problem of pressure adjusts is provided with the pressure adjustment system 9 communicated therewith on seawater chamber 2, and second piston 7 is with overbottom pressure
Energy possessed by strong brine carries out energy transmission, carries out initial compression to the seawater raw water entered in seawater chamber 2, passes through pressure
Adjustment system 9 adjusts volume and pressure.Specific ground pressure adjustment system 9 is as depicted in figs. 1 and 2, and pressure adjusts system 9 and seawater
Chamber 2 is connected, for adjusting seawater volume and pressure in seawater chamber 2.Pressure therein adjusts system 9
The pressure chamber 91 for keeping connection, is additionally provided with third piston 92 and elastic potential energy adjustment mechanism 93 inside pressure chamber 91, therein
Elastic potential energy adjustment mechanism 93 is arranged in the end of seawater chamber 92, and elastic potential energy adjustment mechanism 93 is connection with the formation of third piston 92
Dynamic relationship, elastic potential energy adjustment mechanism 93 can be integrally fixed at the spring of 91 end of pressure chamber, can also be water column, can also be
Meet the compressed gas of specific works requirement, or other mechanisms of elastic potential energy can be adjusted.
The present invention is by driving using temperature difference and being combined using overbottom pressure driving, recycling seawater reverse osmosis system
In energy in the high-pressure thick salt with overbottom pressure, and absorb the thermal energy having in a part of strong brine, and absorb a part
The thermal energy generated by friction during piston motion reduces recycling loss, to reach efficient energy by absorbing thermal energy
Recycle purpose.In the case where the useful work that it is absorbed and is converted is more than running wastage work(, energy recovery efficiency is in theory
100% or more can be reached.
It is illustrated in figure 2 the sea water desalination energy regenerating hybrid system of combination temperature difference driving, entirely recycles hybrid system
Including control device and multiple energy recycle device A, multiple energy recycle device A as shown in Figure 1 in being arranged in parallel, in dense salt
A control valve 10 is respectively equipped at water inlet 31 and brine outlet 32, each strong brine import 31 is divided by strong brine water inlet pipe 20
It is not connect with the strong brine floss hole in seawater reverse osmosis system, each brine outlet 32 passes through strong brine drainpipe respectively
40 and atmosphere, the overbottom pressure energy in strong brine is made full use of and pass to need to desalinate seawater after, control device
It is electrically connected respectively with each control valve 10, logic control is carried out to control valve 10 by control device, it will be without pressure strong brine by dense
It is discharged in brine drainpipe 40；It is respectively equipped with one-way control valve 50 at sea intake 21 and seawer outlet 22 in each seawater chamber 2,
Each sea intake 21 is connect by inlet pipeline 60 with seawater raw water, and each seawer outlet 22 passes through discharge pipe line 70 and seawater reverse osmosis
Saturating desalination system connects, and the phase-change working substance 4 in each energy recycle device A uses identical working medium and identical phase transition temperature, or
Person uses different working medium and mutually different phase transition temperature.
To ensure the heat absorption time of phase-change working substance 4, the endothermic effect of phase-change working substance 4 is promoted, as shown in Fig. 2, institute of the present invention
The sea water desalination energy regenerating hybrid system of offer makes each phase-change working substance 4 fully absorb the heat in strong brine, by will wherein
The sea water desalination energy that phase transformation driving boosting in one energy recycle device drives in another combination temperature difference returns
In the seawater chamber of receiving apparatus.It, can be to enable phase one of in amount recycling hybrid system by the logic control of control device
The time using overbottom pressure driving of the transformation time and another energy recycle device that become intracavitary mutually plans as a whole, and keeps its action time tight
Close linking, and so on, to make to possess, the operation of whole hybrid system of multiple single energy recycle devices is more quick, has
Effect.
In order to preferably carry out automatic open close control to each control valve 10, in the high pressure end position of strong brine cylinder 3 and/or each
High pressure end position in seawater chamber 2 is respectively provided with the position sensor of detection first piston 6 and 7 position of second piston, control
Device processed is electrically connected with each position sensor.
Specific control process following steps：
The opening of control valve 10 of step 1, control device control brine outlet 32, by opening cooling system 52 to phase transformation
Phase-change working substance 4 in chamber 1 is cooled down, and liquid is formed after making phase-change working substance 4 that solution-air phase transformation occur, using low in seawater chamber 2
Seawater raw water is pumped by press pump, and the first piston 6 in second piston 7 and overbottom pressure strong brine cylinder 3 in seawater chamber 2 is in initial bit
It sets；
Step 2, the control valve 10 for closing brine outlet 32 open the control valve 10 at overbottom pressure strong brine import 31, first
The stress level that the seawater initial compression in seawater chamber 2 is had to strong brine using high-pressure thick salt overbottom pressure, pressure adjustment system
9 offer high pressure sea water of system enters space, and keeps pressure；
Step 3 heats the phase-change working substance 4 in phase transformation chamber 1 by heating system 51, while phase-change working substance 4 absorbs
Partial heat in strong brine, when phase-change working substance 4 is absorbed into enough heats, phase-change working substance 4, which undergoes phase transition vaporization, makes phase transformation chamber 1
Middle pressure further increases, and under the common driving with strong brine overbottom pressure, the seawater in seawater chamber 2 is squeezed into and is stopped with unidirectional
It returns in the reverse osmosis high-pressure discharge pipe line 70 of valve, reach while carrying out energy regenerating using the heat in overbottom pressure and absorption strong brine
Purpose.
Step 4, the present invention are detected by piston position sensor, when second piston 7 reaches high-pressure side in seawater chamber 2
When seawater water delivery end of travel, 31 control valve 10 of overbottom pressure strong brine import is closed, opens 32 control valve 10 of brine outlet, discharge
The strong brine of pressure transmission is completed, the phase-change working substance 4 in cooling phase-change chamber 1 is liquid, and pressure adjusts the third piston in system 9
92 reset, and seawater is pumped into seawater chamber 2 with low-lift pump, and the in the second piston 7 and overbottom pressure strong brine cylinder 3 in seawater chamber 2
One piston 6 returns to initial position.
Step 1-4 is repeated, next cycle is carried out.
Certainly the fluid for being heated or cooled, it may also be used for prepare air-conditioning cold air or be needed for other suitable cold energy
It asks.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (10)
1. a kind of sea water desalting energy recovery device of combination temperature difference driving, which is characterized in that described device includes being connected
Phase transformation chamber (1) and seawater chamber (2), a strong brine cylinder (3) is equipped in the phase transformation chamber (1), is located at the strong brine cylinder (3) outside
It is equipped with phase-change working substance (4) in the phase transformation chamber (1) of all positions, is equipped in the phase-change working substance (4) for making the phase exchange work
The humidity control system (5) that matter (4) is undergone phase transition；
It is equipped with first piston (6) in the strong brine cylinder (3), is equipped with second piston (7) in the seawater chamber (2), described first
Piston (6) is fixedly connected with the second piston (7) by piston rod (8)；
The strong brine cylinder (3) is equipped with strong brine import (31) and brine outlet (32), and the seawater chamber (2) is equipped with sea
Water inlet (21) and seawer outlet (22)；
The strong brine with overbottom pressure after seawater reverse osmosis system is desalinated enters in the strong brine cylinder, and described in driving
First piston moves, and drives the second piston to move by the first piston, the second piston is with the dense of overbottom pressure
Energy possessed by brine carries out energy transmission, the seawater raw water initial compression before desalination, then is adjusted by the temperature and is
System adjusts the temperature of the phase-change working substance, so that the phase-change working substance is undergone phase transition and drives described second in the seawater chamber to live
Plug movement, the second piston are entered by the seawer outlet with higher after being driven into the seawater boost in the seawater chamber
The seawater reverse osmosis system of pressure.
2. the sea water desalting energy recovery device of combination temperature difference driving according to claim 1, which is characterized in that described
Humidity control system (5) includes heating system (51) and cooling system (52), the liquid-gas phase transition temperature of the phase-change working substance (4)
Less than the heating temperature of strong brine temperature and the heating system (51) in the strong brine cylinder (3), the phase-change working substance (4)
Solution-air phase transition temperature be higher than the cooling system (52) cooling temperature.
3. the sea water desalting energy recovery device of combination temperature difference driving according to claim 2, which is characterized in that described
The cavity wall of strong brine cylinder (3) is made of the good material of heat conduction, it is preferred that can be except the stroke of strong brine cylinder first piston
If heat pipe, for the quick heat exchange between strong brine and phase-change working substance.
4. according to the sea water desalting energy recovery device of any combination temperature difference drivings of claim 1-3, feature exists
In, be additionally provided on the seawater chamber (2) communicate therewith pressure adjustment system (9), the second piston is with the dense of overbottom pressure
Possessed by brine energy carry out energy transmission, and to by the sea intake enter the seawater chamber in seawater raw water into
Row initial compression adjusts system call interception volume by the pressure and keeps the initial compression pressure of the seawater intracavitary.
5. the sea water desalting energy recovery device of combination temperature difference driving according to claim 4, which is characterized in that described
Pressure adjustment system (9) includes keeping the pressure chamber (91) that be connected to the seawater chamber (2), equipped with the in the pressure chamber (91)
Three pistons (92), the end of the pressure chamber (91) are equipped with the elastic potential energy for adjusting the seawater chamber volume and pressure and adjust
Mechanism (93), the elastic potential energy adjustment mechanism (93) form with the third piston (92) and link.
6. the sea water desalting energy recovery device of combination temperature difference driving according to claim 5, which is characterized in that described
Elastic potential energy adjustment mechanism can be integrally fixed at the spring, water column or the compression for meeting specific works requirement of the pressure chamber end
Gas.
7. a kind of sea water desalination energy regenerating hybrid system of combination temperature difference driving, which is characterized in that the hybrid system packet
Control device and the sea water desalting energy recovery device of any combination temperature difference drivings of multiple claim 1-6 are included, respectively
It is respectively equipped with a control valve at the strong brine import (31) and brine outlet (32) in the energy recycle device (A)
(10), each strong brine import (31) connect with a strong brine water inlet pipe (20) respectively, each brine outlet (32) point
It is not connect with a strong brine drainpipe (40), the control device is electrically connected with each control valve (10) respectively；It is each described
Be respectively equipped with one-way control valve (50) at sea intake (21) and seawer outlet (22) in seawater chamber (2), each seawater into
Mouth (21) is connect with an inlet pipeline (60) respectively, and each seawer outlet (22) connect with a discharge pipe line (70) respectively.
8. the sea water desalination energy regenerating hybrid system of combination temperature difference driving according to claim 7, which is characterized in that
The phase transformation chamber in energy recycle device described in one in each energy recycle device (A) and another energy regenerating
The seawater chamber in device is connected by connecting line (30), so as to so that the phase transformation driving of the energy recycle device can
To act on the second piston of another energy recycle device.
9. the sea water desalination energy regenerating hybrid system of combination temperature difference driving according to claim 7, which is characterized in that
High pressure end position in the high pressure end position of each strong brine cylinder (3) and/or each seawater chamber (2) is respectively equipped with one and is used for
Detect the position sensor of the first piston (6) and second piston (7) position, the control device and each position sensing
Device is electrically connected.By logic control, the phase for the phase transformation intracavitary that one of can make in the energy recycle device system
The change time with the time using overbottom pressure driving of another energy recycle device mutually plans as a whole that its action time is made closely to be connected, with this
Analogize, it is more fast and effective to make to possess the operation of total system device of multiple single energy recycle devices.
10. the sea water desalination energy regenerating hybrid system of combination temperature difference driving according to claim 9, feature exist
In in the case where different single energy recycle devices uses different suitable working medium, by the strong brine after absorption heat
And/or it was absorbed the hot fluid of heat and is also used as the cold energy source of cooling system or external cooling.
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| CN108506178B (en) | 2024-03-01 |
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