CN106830136A - Seawater desalination system based on vortex tube refrigeration - Google Patents
Seawater desalination system based on vortex tube refrigeration Download PDFInfo
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- CN106830136A CN106830136A CN201710198307.0A CN201710198307A CN106830136A CN 106830136 A CN106830136 A CN 106830136A CN 201710198307 A CN201710198307 A CN 201710198307A CN 106830136 A CN106830136 A CN 106830136A
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- 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
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- 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
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Abstract
The present invention provides a kind of seawater desalination system based on swirl control SAPMAC method, it is characterised in that including：Hydrate sea water desalinating unit, makes seawater and hydrating agents carry out hydration reaction generation hydrate slurry and decompose the hydrate slurry to obtain fresh water and hydrating agents；Hydrating agents EGR, is connected and exchanges heat with hydrate sea water desalinating unit, and hydrating agents are reclaimed, and is supplied to hydrate sea water desalinating unit；And vortex tube refrigerating device, exported with cold side outlet and hot junction, connected with hydrating agents EGR, for the hydrating agents exchanged heat in hydrating agents EGR to be divided into hot and cold two parts, seawater desalination system based on swirl control SAPMAC method of the invention not only realizes recycling for hydrating agents gas, and fresh water can just be extracted without additional configuration power supply device and refrigerating plant, so that reducing energy consumption.
Description
Technical field
The present invention relates to field of seawater desalination, and in particular to a kind of seawater desalination system based on vortex tube refrigeration.
Background technology
Water is lifespring and cradle, is the essential base substance of mankind's existence, life and production, is
What cannot be replaced on the earth obtains valuable basic natural resources, is the control of the key factor and ecological environment that constitute geological environment
One of key element, while being also important strategic resource and an Organic structure for national overall national strength.The scarcity of water resource is
Gradually influence global economy and ecological environment.Relevant bodies of the United Nations once pointed out that " freshwater resources are in short supply will seriously to restrict 21 century
Economy and social development, and it is possible to cause to break out war between country ".
Desalination technology is exactly in brief the salinity that removes in seawater and obtains the fresh water that can directly drink, tradition
Desalination technology include multistage flash evaporation (MSF), its advantage be technical maturity equipment it is simple and reliable is conducive to maximization, but
It is also important restriction factor that construction investment is high.Multi-effect flashing steam (MEd) technology, its advantage is to reduce life using low-grade heat source
Cost is produced, but evaporating temperature constrains the thermal efficiency.Counter-infiltration (RO) technology, its advantage is low energy consumption, and the construction period is short, but
Pre-processing requirements to seawater are very strict.
Hydrate is a kind of environmentally friendly desalination technology of comparing.With energy consumption is low, equipment simple, hydrating agents price is low
Many advantages, such as honest and clean, wide material sources.Hydrate desalinization is one using the hydrone in hydrating agents gas molecule and seawater
Hydrate slurry is generated under fixed condition, the aqueous water for be extracted into endothermic decomposition in decomposition of hydrate device by circulating pump, decompositing is in cooling
Be heated in device flash to vapor, vapor in driven fresh water condenser heat release cooling finally obtain fresh water.Hydrate seawater is light
The great advantage of change is that energy consumption is low, equipment is simple, maintenance operating cost is low；Solubility of the hydrating agents gas in water or salt solution
It is low, it is nontoxic, it is cheap and easy to get, without explosion danger.In addition, it also with freezing some advantages seawater need not such as be carried out it is pre-
Process, corrode lighter etc..
Hydrate has following characteristics：(1) hydrate generation and decomposable process are completely reciprocal, generate the raw material of hydrate
Only gas and water, resultant product after decomposition also only gas and water, do not pollute to environment, and water is big in nature
Amount deposits big and cheap；(2) gas hydrate synthesis and the temperature, pressure condition decomposed are relatively mild.Hydrate slurry is at ambient pressure
A kind of solid-liquid two-phase suspension of similar ice slurry, is made up of some tiny microgranular Study of Clathrate Hydrates and the aqueous solution, 5~
There is heat density very high in 12 DEG C of temperature ranges, can just be generated under normal pressure and low pressure operating mode.
The patent of invention of Patent No. 200910214077.8 is disclosed one kind and is carried out using liquified natural gas (LNG) cold energy
The system of desalinization, includes urban water supply system, cities and towns air supply system, LNG handling and stocking system, hydrate seawater light
Change system and seawater extraction system.The sea water service system is high to LNG cold energy use rates, and high financial profit, cost of investment is small, right
The influence of environment.But its shortcoming is also apparent from, i.e., desalinization depends on LNG cold energy, therefore the seawater desalination system can only be built
Around LNG receiving stations, the popularization and application of the seawater desalination system are limited.
In addition, disclosing a kind of method of desalinization, the party in the patent of invention of Patent No. 201110134047.3
Method needs to cool down seawater before hydration reaction, increases its degree of supercooling, so that additional configuration cooling water system, increases
The complexity of equipment, increased the energy consumption of system.
The content of the invention
Carried out the present invention be directed to above-mentioned problem, it is therefore intended that a kind of simple structure is provided, without optional equipment energy supply
Or the seawater desalination system based on vortex tube refrigeration of refrigerating plant.
The present invention to achieve the above object, employs following technical scheme：
The present invention provides a kind of seawater desalination system based on swirl control SAPMAC method, it is characterised in that including：Hydrate
Sea water desalinating unit, makes seawater and hydrating agents carry out hydration reaction generation hydrate slurry and decompose the hydrate slurry to obtain fresh water
And hydrating agents；Hydrating agents EGR, connects and exchanges heat with hydrate sea water desalinating unit, hydrating agents is reclaimed, and be supplied to
Hydrate sea water desalinating unit；And vortex tube refrigerating device, exported with cold side outlet and hot junction, with hydrating agents EGR
Connection, for the hydrating agents exchanged heat in hydrating agents EGR to be divided into hot and cold two parts, wherein, hydrate desalinization dress
Put including：The hydrate for carrying out hydration reaction generation hydrate slurry for making hydrating agents and seawater generates kettle；The port of export and the water
Compound generation kettle is connected, and seawater is pumped into the sea water pump that hydrate generates kettle；Arrival end is connected with hydrate generation kettle
Hydrate pump；The decomposition of hydrate device being connected with the port of export of the hydrate pump；And with decomposition of hydrate device bottom
The fresh water pump that the port of export is connected, hydrate generation kettle has the body of stainless steel；Positioned at the side lower section of the body, with seawater
The seawater inlet that the port of export of pump is connected；Positioned at the side top of body, the hydration being connected with the arrival end of hydrate pump
Thing is exported；Positioned at the hydrating agents entrance of body bottom portion, and positioned at the exhaust outlet of bodies top, hydrating agents EGR includes：
Arrival end is connected with the top of decomposition of hydrate device, hydrate slurry is decomposed the first gas pipe of the hydrating agents discharge for obtaining；
The gas mixing tank that arrival end is connected with the port of export of the first gas pipe；The port of export phase of arrival end and the gas mixing tank
The gas-drying apparatus of connection；Arrival end is connected with the port of export of the gas-drying apparatus, and compression hydrating agents make what hydrating agents heated up
Gas boosting pump；Arrival end is connected with the port of export of the gas boosting pump, by decomposition of hydrate device, makes hydrating agents in hydration
The second gas pipe of heat release in thing decomposer；It is connected at the top of arrival end and hydrate generation kettle, the port of export and gas mixing
The third gas pipe that tank is connected；The hot junction outlet of arrival end and vortex tube refrigerating device, the port of export and gas mixing tank
4th flue of connection；And arrival end is connected with the cold side outlet of vortex tube refrigerating device, the port of export and gas hydrate
5th flue of generation bottom portion connection.
In the seawater desalination system based on swirl control SAPMAC method that the present invention is provided, can also have such special
Levy：Wherein, hydrating agents are CO2And C3H8In at least one.
In the seawater desalination system based on swirl control SAPMAC method that the present invention is provided, can also have such special
Levy：Wherein, hydrate sea water desalinating unit also includes floating ball type liquid-level meter, and the floating ball type liquid-level meter is arranged on hydrate generation kettle
Top, for detect hydrate generation kettle in hydrate slurry liquid level.
In the seawater desalination system based on swirl control SAPMAC method that the present invention is provided, can also have such special
Levy：Wherein, vortex tube refrigerating device include arrival end be connected with second gas pipe vortex tube, be arranged on hot junction export on
First flow regulating valve and the second flow regulating valve being arranged on cold side outlet.
In the seawater desalination system based on swirl control SAPMAC method that the present invention is provided, can also have such special
Levy：Wherein, second gas pipe is snakelike heat exchange coil.
The effect of invention and effect
Seawater desalination system based on swirl control SAPMAC method involved in the present invention, because making water using gas boosting pump
Mixture gas heating, the hydrating agents gas of HTHP is by snakelike heat exchange tube into being changed with hydrate slurry in decomposition of hydrate device
Heat, makes hydrate slurry exchange heat and decomposes, and the hydrate gas after decomposition enters gas mixing tank by first gas pipe, after heat exchange
Hydrating agents gas enters in vortex tube, forms hot and cold two parts hydrating agents gas, and the hydrating agents gas of cold end is given birth into hydrate
Into kettle, the hydrating agents gas in hot junction enters gas mixing tank, is utilized into gas boosting pump circulation after preheating, so, this hair
The bright seawater desalination system based on swirl control SAPMAC method not only realizes recycling for hydrating agents gas, and without volume
Outer configuration power supply device and refrigerating plant can just extract fresh water, so that reducing energy consumption.
In addition, because hydrate is transported in decomposition of hydrate device as carrier using hydrate slurry, therefore avoid
The danger of solid-state Hydrate Plugging pipe-line system.
Brief description of the drawings
Fig. 1 is the structural representation of the seawater desalination system based on swirl control SAPMAC method in embodiments of the invention.
Specific embodiment
Below in conjunction with accompanying drawing, the seawater desalination system based on swirl control SAPMAC method involved in the present invention is made to explain in detail
State.
Fig. 1 is the structural representation of the seawater desalination system based on swirl control SAPMAC method in embodiments of the invention.
As shown in figure 1, the seawater desalination system 100 based on swirl control SAPMAC method includes hydrate sea water desalinating unit
10th, hydrating agents EGR 20 and vortex tube refrigerating device 30.
Hydrate sea water desalinating unit 10 simultaneously should for making seawater and hydrating agents carry out hydration reaction generation hydrate slurry
Hydrate slurry is decomposed and obtains fresh water and the hydrating agents, and hydrate sea water desalinating unit 10 is generated including sea water pump 11, hydrate
Kettle 12, hydrate pump 13, decomposition of hydrate device 14, fresh water pump 15 and floating ball type liquid-level meter 16.In the present embodiment, hydrating agents
It is CO2, hydrating agents can also be C in addition3H8Or C3H8With CO2Mixture.
The arrival end of sea water pump 11 connects seawater by pipeline, and the first control valve 17, the first regulation are provided with pipeline
Valve 17 is used for adjusting the inflow of seawater, and the port of export connection hydrate generation kettle 12 of sea water pump 11 is in the present embodiment, extra large
Water is to have filtered the seawater after solid impurity.
There is hydrate generation kettle 12 body 121 of stainless steel, the outlet 123, hydrating agents of seawater inlet 122, hydrate to enter
Mouth 124 and exhaust outlet 125.Seawater inlet 122 is located at the side lower section of body 121, and the port of export with sea water pump 11 is connected.Water
Compound outlet 123 is located at the side top of body 121, and the arrival end with hydrate pump 13 is connected.Hydrating agents entrance 124 is located at
The bottom of body 121, is connected with vortex tube refrigerating device 30.Exhaust outlet 125 is located at the top of body 121, is circulated with hydrating agents and filled
20 are put to be connected.
The hydrate outlet 123 of the arrival end of hydrate pump 13 and hydrate generation kettle 12 is connected, the port of export and hydration
Thing decomposer 14 is connected.
The side top of decomposition of hydrate device 14 is connected with the port of export of hydrate pump 13, and dress is circulated in top with hydrate
Put 20 to be connected, the port of export of bottom is connected with fresh water pump 15.
The entrance point of fresh water pump 15 is connected with the port of export of the bottom of decomposition of hydrate device 14, and the port of export is received with the fresh water of outside
Acquisition means are connected by connecting line, and the connecting line is provided with the second control valve 151, and the second control valve 151 is used for adjusting
Save the fresh water outlet amount of the port of export of fresh water pump 15.
Floating ball type liquid-level meter 16 is arranged on the top that hydrate generates kettle 12, and its lower end generates kettle 12 close to hydrate
Bottom, upper end generates the top of kettle 12 in hydrate, and centre is for bar and floats over the ball float on hydrate slurry, by ball float
On inductor move up and down detect hydrate generation kettle 12 in hydrate slurry liquid level.
As shown in figure 1, hydrating agents EGR 20 is used for reclaiming hydrating agents, and it is supplied to hydrate sea water desalinating unit
10, hydrating agents EGR 20 includes first gas pipe 21, gas mixing tank 22, gas-drying apparatus 23, gas boosting pump 24, the
Two flues 25, third gas pipe 26, the 4th flue 27 and the 5th flue 28.
The port of export at the top of the arrival end of first gas pipe 21 and decomposition of hydrate device 14 is connected, the port of export and gas mixing
Tank 22 is connected, and the 3rd regulating valve 211 is provided with first gas pipe 21, and the 3rd regulating valve 211 is used for adjusting first gas pipe
Tolerance on 21.
Gas mixing tank 22 has three entrance points and an one outlet end, three entrance points be respectively the first entrance point 221,
Second entrance point 222, triple feed inlet end 223, the first entrance point 221 is connected with the port of export of first gas pipe 21, the second import
End 222 connects with third gas pipe 26, and triple feed inlet end 223 connects with the 4th flue 27.The port of export of gas mixing tank 22
Connected with gas-drying apparatus 23.
The arrival end of gas-drying apparatus 23 is connected with the port of export of gas mixing tank 22.
The arrival end of gas boosting pump 24 is connected with the port of export of drier 23.
The arrival end of second gas pipe 25 is connected with the port of export of gas boosting pump 24, and second gas pipe 25 is by hydration
Thing decomposer 14, is the snakelike heat exchange coil of helical structure in decomposition of hydrate device 14.The port of export of second gas pipe 25 with
Vortex tube refrigerating device 30 is connected.
The exhaust outlet 125 at the top of the arrival end of third gas pipe 26 and hydrate generation kettle 12 is connected, the port of export and gas
Second entrance point 222 of body blending tank 22 is connected, and the 4th regulating valve 261, the 4th regulation are additionally provided with third gas pipe 26
Valve 261 is used for controlling the tolerance in third gas pipe 26.
The arrival end of the 4th flue 27 is connected with vortex tube refrigerating device 30, and the of the port of export and gas mixing tank 22
Triple feed inlet end 223 is connected, and is additionally provided with the 5th regulating valve 271 on the 4th flue 27, and the 5th regulating valve 271 is used for controlling the
Tolerance in four flues 27.
The arrival end of the 5th flue 28 is connected with vortex tube refrigerating device 30, and the port of export generates the bottom of kettle 12 with hydrate
The hydrating agents entrance 124 in portion is connected, and the 6th regulating valve 281 is additionally provided with the 5th flue 28, and the 6th regulating valve 281 is used for
Control the tolerance in the 5th flue 28.
Vortex tube refrigerating device 30 includes vortex tube 31, first flow regulating valve 32 and second flow regulating valve 33, whirlpool
There is flow tube 31 entrance point, hot junction to export 311 and cold side outlet 312, and its entrance point goes out with second gas pipe 25
Mouth end is connected, and hot junction outlet 311 is connected with the entrance point of the 4th flue 27, the flue 28 of cold side outlet 312 and the 5th
Entrance point be connected.First flow regulating valve 32 is arranged in hot junction outlet 311, and the 4th flue 27 is passed through for adjusting
Tolerance.Second flow regulating valve 33 is arranged on cold side outlet 312, and the tolerance of the 5th flue 28 is passed through for adjusting.
The operation principle of the seawater desalination system based on swirl control SAPMAC method involved by the present embodiment and use process
For：
When being desalinized seawater using the seawater desalination system 100 based on swirl control SAPMAC method, operator is first turned on sea
Water pump 11, seawater is pumped into hydrate generation kettle 12 by seawater inlet 122, the water at low temperature being passed through with hydrating agents entrance 124
Hydrate slurry is produced after mixture reaction.The hydrate slurry that will be located at hydrate generation kettle 12 upper strata using hydrate pump 13 passes through water
Compound outlet 123 is extracted out, feeding decomposition of hydrate device 14, and hydrate slurry endothermic decomposition in decomposition of hydrate device 14 obtains water
Mixture and fresh water.Fresh water is extracted out be sent in the fresh water collecting device of outside again by fresh water pump.
The hydrating agents gas of hydrate slurry decomposition generation is discharged to gas and mixes from first gas pipe 21 in decomposition of hydrate device 14
Close and fill in 22, the hydrating agents gas after pre-heating temperature elevation enters back into gas-drying apparatus 23, by the dried hydration of gas-drying apparatus 23
Agent gas enters gas boosting pump 24, the increasing temperature and pressure under the compression of gas boosting pump 24.The hydrating agents gas of HTHP
Body enters second gas pipe 25, hydrate slurry is thermally decomposed into fresh water and hydrating agents gas in decomposition of hydrate device 14, should
Hydrating agents gas enters first gas pipe 21 from the port of export at the top of decomposition of hydrate device 14, is circulated again.Second gas
Hydrating agents gas after being exchanged heat in pipe 37 enters in vortex tube 31, forms hot water mixture gas and cold water mixture gas, and hot water is closed
Agent gas is entered into during gas mixing fills 22 by the 4th flue 27 and recycled, and cold water mixture gas is by the 5th flue 28
The hydrating agents entrance 124 and seawater for entering into hydrate generation kettle 12 bottom react recycling, the top row of hydrate generation kettle 12
The unnecessary hydrating agents gas out of gas port 125 is recycled after being entered during gas mixing fills 22 by third gas pipe 26.
The effect of embodiment and effect
The seawater desalination system based on swirl control SAPMAC method involved by the present embodiment, because being made using gas boosting pump
Hydrating agents gas heating, the hydrating agents gas of HTHP by snakelike heat exchange tube enter in decomposition of hydrate device with hydrate slurry
Heat exchange, makes hydrate slurry exchange heat and decomposes, and the hydrate gas after decomposition enters gas mixing tank by first gas pipe, after heat exchange
Hydrating agents gas enter in vortex tube, form hot and cold two parts hydrating agents gas, the hydrating agents gas of cold end enters hydrate
Generation kettle, the hydrating agents gas in hot junction enters gas mixing tank, is utilized into gas boosting pump circulation after preheating, so, this
The seawater desalination system based on swirl control SAPMAC method of embodiment not only realizes recycling for hydrating agents gas, Er Qiewu
Needing additional configuration power supply device and refrigerating plant can just extract fresh water, so that reducing energy consumption.
In addition, because hydrate is transported in decomposition of hydrate device as carrier using hydrate slurry, therefore avoid
The danger of solid-state Hydrate Plugging pipe-line system.
In addition, the hydrating agents gas materials used in the seawater desalination system are simple, energy-conserving and environment-protective；Using solid-liquid two-phase
Hydrate slurry conveys hydrate as carrier, so as to avoid solid-state Hydrate Plugging pipeline.
Certainly, the seawater desalination system based on swirl control SAPMAC method involved in the present invention is not merely defined in the above
Structure described in embodiment.The basic explanation under present inventive concept is these are only, and is made according to technical scheme
Any equivalent transformation, protection scope of the present invention all should be belonged to.
Claims (5)
1. a kind of seawater desalination system based on swirl control SAPMAC method, it is characterised in that including：
Hydrate sea water desalinating unit, makes seawater and hydrating agents carry out hydration reaction generation hydrate slurry and divide the hydrate slurry
Solution obtains fresh water and the hydrating agents；
Hydrating agents EGR, connects and exchanges heat with the hydrate sea water desalinating unit, the hydrating agents is reclaimed, and provide
To the hydrate sea water desalinating unit；And
Vortex tube refrigerating device, exports with cold side outlet and hot junction, is connected with the hydrating agents EGR, for by described in
The hydrating agents exchanged heat in hydrating agents EGR are divided into hot and cold two parts,
Wherein, the hydrate sea water desalinating unit includes：It is anti-for making the hydrating agents and the seawater carry out the hydration
The hydrate generation kettle of hydrate slurry should be generated；The port of export is connected with hydrate generation kettle, the seawater is pumped into described
Hydrate generates the sea water pump of kettle；The hydrate pump that arrival end is connected with hydrate generation kettle；With going out for the hydrate pump
The decomposition of hydrate device that mouth end is connected；And the fresh water pump being connected with the port of export of the decomposition of hydrate device bottom,
The hydrate generation kettle has the body of stainless steel；Positioned at the side lower section of the body, the outlet with the sea water pump
The seawater inlet that end is connected；Positioned at the side top of the body, the hydration being connected with the arrival end of the hydrate pump
Thing is exported；Positioned at the hydrating agents entrance of the body bottom portion, and positioned at the exhaust outlet of the bodies top,
The hydrating agents EGR includes：
Arrival end is connected with the top of the decomposition of hydrate device, the hydrate slurry is decomposed the hydrating agents for obtaining and arranges
The first gas pipe for going out；The gas mixing tank that arrival end is connected with the port of export of the first gas pipe；Arrival end and the gas
The gas-drying apparatus that the port of export of blending tank is connected；Arrival end is connected with the port of export of the gas-drying apparatus, and compression is described
Hydrating agents make the gas boosting pump that the hydrating agents heat up；Arrival end is connected with the port of export of the gas boosting pump, by institute
Decomposition of hydrate device is stated, makes the second gas pipe of hydrating agents heat release in the decomposition of hydrate device；Arrival end with it is described
It is connected at the top of hydrate generation kettle, the third gas pipe that the port of export is connected with the gas mixing tank；Arrival end and institute
State the hot junction outlet of vortex tube refrigerating device, the 4th flue that the port of export is connected with the gas mixing tank；And enter
Mouth end is connected with the cold side outlet of the vortex tube refrigerating device, and the port of export is connected with gas hydrate generation bottom portion
5th flue.
2. the seawater desalination system of swirl control SAPMAC method is based on according to claim 1, it is characterised in that：
Wherein, the hydrating agents are CO2And C3H8In at least one.
3. the seawater desalination system of swirl control SAPMAC method is based on according to claim 1, it is characterised in that：
Wherein, the hydrate sea water desalinating unit also includes floating ball type liquid-level meter, and the floating ball type liquid-level meter is arranged on the water
Compound generates the top of kettle, the liquid level for detecting the hydrate slurry in the hydrate generation kettle.
4. the seawater desalination system of swirl control SAPMAC method is based on according to claim 1, it is characterised in that：
Wherein, the vortex tube refrigerating device include arrival end be connected with the second gas pipe vortex tube, be arranged on institute
State the first flow regulating valve in the outlet of hot junction and the second flow regulating valve being arranged on the cold side outlet.
5. the seawater desalination system of swirl control SAPMAC method is based on according to claim 1, it is characterised in that：
Wherein, the second gas pipe is snakelike heat exchange coil.
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| CN109911966A (en) * | 2019-04-01 | 2019-06-21 | 武汉理工大学 | A kind of Waste Heat Reuse desalination plant based on vortex tube effect |
| CN113461084A (en) * | 2018-05-11 | 2021-10-01 | 兰州理工大学 | System and method for desalting seawater by gas hydrate method |
| EP4153538A4 (en) * | 2020-05-18 | 2023-11-01 | Battelle Memorial Institute | Systems, methods, and compositions for purifying water |
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| CN109911966A (en) * | 2019-04-01 | 2019-06-21 | 武汉理工大学 | A kind of Waste Heat Reuse desalination plant based on vortex tube effect |
| EP4153538A4 (en) * | 2020-05-18 | 2023-11-01 | Battelle Memorial Institute | Systems, methods, and compositions for purifying water |
| US12103866B2 (en) | 2020-05-18 | 2024-10-01 | Battelle Memorial Institute | Systems, methods, and compositions for purifying water |
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| CN106830136B (en) | 2019-12-03 |
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