CN212269768U - RO-spray coupling low-energy-consumption water-salt co-production compressed air pressurization system - Google Patents
RO-spray coupling low-energy-consumption water-salt co-production compressed air pressurization system Download PDFInfo
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- CN212269768U CN212269768U CN202021704216.3U CN202021704216U CN212269768U CN 212269768 U CN212269768 U CN 212269768U CN 202021704216 U CN202021704216 U CN 202021704216U CN 212269768 U CN212269768 U CN 212269768U
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Abstract
The utility model belongs to the technical field of seawater desalination, in particular to a RO-spray coupling low-energy consumption water and salt co-production compressed air supercharging system, which comprises an air compression energy storage system, wherein the air compression energy storage system is connected with a high-pressure tank group, the bottom of the high-pressure tank group is connected with an RO reverse osmosis device, one end of the RO reverse osmosis device is connected with a spray nozzle in a spray evaporation chamber of a spray distillation system, and the other end of the RO reverse osmosis device is connected with a fresh water tank; the upper end of the spray evaporation chamber is connected with a condenser, the condenser is connected with a fresh water tank, the lower end of the spray evaporation chamber is connected with a crystallization pond, the crystallization pond is connected with a brine water pressing tank, the lower end of the brine water pressing tank is connected with an atomizing nozzle in the spray evaporation chamber, and the upper end of the brine water pressing tank is connected with a high-pressure tank group and an air pressure energy storage system. The system has high water return rate, and can completely separate solute from solution, thereby avoiding the discharge of a large amount of strong brine. High energy recovery and utilization rate, consumption reduction, efficiency improvement, energy conservation and emission reduction. The utility model has important significance for improving the development of the seawater desalination industry in China for improving the innovation competitiveness of the core technology of the seawater desalination in China.
Description
Technical Field
The utility model relates to a RO-spraying coupling low energy consumption water salt coproduction compressed air supercharging system belongs to sea water desalination technical field.
Background
Water is the source of life of all animals and plants, all animals and plants living on the land can not be separated from fresh water, and land life does not exist in places without fresh water. Desalination of sea water has become the main and even the only solution to solve the water resource crisis in various water-poor countries. At present, two main methods for seawater desalination in the world are a reverse osmosis membrane method and a distillation thermal method, which are fresh water obtained by energy consumption, although at present, most advanced seawater desalination technical equipment is developed at a high speed, the energy consumption of RO (reverse osmosis) per ton of water is 3-4.5kw.h/m2, the manufacturing cost of thermal method per ton of water is more than or equal to 10 yuan/m 3, the energy consumption is high, the cost is high, and the following problems exist:
1. the existing membrane method thermal method can only concentrate seawater but cannot completely separate solute from solution (salt precipitation), so that a large amount of strong brine is discharged, and the biological ecology of relevant water areas of oceans is changed to cause local biological extinction.
2. The main equipment depends on import such as RO membrane, high pressure pump, energy recovery, evaporator of heat method, etc., and the price is expensive, such as 110m3/h of plunger pump in Europe import, more than 300 million RMB, import energy recovery device, which also accounts for 15% of the total project investment.
3. Because of the lack of innovative core technology and the poor quality of domestic equipment, the dependence on the import of equipment products of internationally developed countries is caused, so the investment per ton of water for initial investment cost is higher, the investment per ton of RO is 8000-.
4. Due to the corrosiveness of seawater, the service life of the moving parts is short, and the depreciation cost of the project is increased.
5. The operation energy consumption is high, no energy recovery is 8-10kw.h/m3, and energy recovery is 3-4.5kw.h/m3 (RO).
6. The water return rate is low and is 35-55%.
SUMMERY OF THE UTILITY MODEL
According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: the defects of the prior art are overcome, the RO-spray coupling low-energy-consumption water-salt co-production compressed air supercharging system is provided, the corresponding effective solution is provided aiming at the technical and economic problems in the seawater desalination field, the consumption reduction, the efficiency enhancement, the energy saving and the emission reduction are realized, the cost and the service life of equipment are saved, the strong brine pollutes the environment, and the water production cost is reduced.
The RO-spray coupling low-energy-consumption water and salt co-production compressed air supercharging system comprises an air compression energy storage system, wherein the air compression energy storage system is connected with a high-pressure tank group, the bottom of the high-pressure tank group is connected with an RO reverse osmosis device, one end of the RO reverse osmosis device is connected with a spray nozzle in a spray evaporation chamber of a spray distillation system, and the other end of the RO reverse osmosis device is connected with a fresh water tank; the upper end of the spray evaporation chamber is connected with a condenser, the condenser is connected with a fresh water tank, the lower end of the spray evaporation chamber is connected with a crystallization pond, the crystallization pond is connected with a brine water pressing tank, the lower end of the brine water pressing tank is connected with a spray nozzle in the spray evaporation chamber, and the upper end of the brine water pressing tank is connected with a high-pressure tank group and an air pressure energy storage system; the spray distillation system also comprises a hot air source, and the output end of the hot air source is arranged in the spray evaporation chamber.
The utility model discloses pass through high-pressure tank group by air compression energy storage system, provide the pressure boost power of sea water strong brine to RO reverse osmosis unit and spray distillation system. And a high-pressure seawater pipe and an electromagnetic valve are connected between the lower part of the high-pressure tank group and the RO reverse osmosis device, and seawater enters the RO reverse osmosis device from the high-pressure tank group through the high-pressure seawater pipe. The upper portion of high-pressure tank group has the gas transmission pipeline who connects in pneumatics energy storage system and vortex tube unit, installs the solenoid valve between the pipeline, and pneumatics energy storage system passes through the gas transmission pipeline and supplies energy for high-pressure tank group, as the pressure source of high-pressure tank group, and high-pressure tank group after the pressure decline provides the air supply for the vortex tube unit.
Wherein, RO reverse osmosis unit be one-level or multistage filter equipment, have the strong brine pipeline to link to each other and install the solenoid valve between last level and the next stage device. The strong brine pipeline of the final-stage reverse osmosis device is communicated with the spray nozzle in the spray evaporation chamber.
The hot air source is connected with the hot end of the vortex tube unit, the cold end of the vortex tube unit is connected with the condenser, the hot end of the vortex tube unit is communicated with the hot air source device of the spray distillation system to provide distillation heat energy for the spray evaporation chamber, and the cold end of the vortex tube unit is communicated with the condenser to liquefy distilled fresh water. The vortex tube unit is connected with the high-pressure tank unit, and an air source is provided by the high-pressure tank unit.
The high-pressure tank group comprises a plurality of high-pressure tanks, adjacent high-pressure tanks are connected with each other through pipelines, and electromagnetic valves are arranged on the pipelines.
The high-pressure tank group is also connected with a seawater tank, clean seawater is stored in the seawater tank, and the seawater tank supplies seawater to be desalinated to the high-pressure tank group through a low-pressure pump.
The air compression energy storage system comprises an air compressor unit and an air storage tank, wherein the air compressor unit and the air storage tank are respectively connected to the high-pressure tank unit through pipelines, and the pipelines are provided with electromagnetic valves.
The utility model discloses in, the air compression energy storage system is RO reverse osmosis unit and spray distillation system, outside providing the pressure boost power of sea water strong brine, still provides certain heat and cold energy for spray distillation system, has guaranteed the high-efficient utilization of energy.
The utility model discloses a spray distillation system packs by spraying evaporation chamber, atomizer, hot-blast source, condenser, crystallizer, brine pressurized-water tank, defogging and constitutes.
The utility model discloses a compressed air pressure transmission route does:
a. air compressor set → air storage tank (well) → first-stage high-pressure tank → first-stage RO reverse osmosis device → second-stage RO reverse osmosis device → spray nozzle → spray evaporation chamber
c. Air compressor set → air storage tank (well) → high pressure tank → vortex tube set → hot air source → spray evaporation chamber → condenser
d. Air storage tank (well) → brine water pressing tank → spray nozzle → spray evaporation chamber
The working principle is as follows:
the air compressor unit injects 8-9Mpa compressed air into a gas storage tank (well) in the valley electricity time period to be stored as a power source of an RO reverse osmosis device and a spray distillation system, after processed seawater is pumped into a high-pressure tank (group) by a low-pressure pump, an electromagnetic valve communicated with the gas storage tank (well) is started and opened, the compressed air pressurizes seawater in a first-stage high-pressure tank, the seawater is pressed into the RO reverse osmosis device, one end of the seawater is discharged into a fresh water tank after being filtered by an RO reverse osmosis membrane pipe, or RO filtration is carried out again, strong brine with pressure (4.5-6.5Mpa) at the other end passes through a second-stage RO reverse osmosis device, the strong brine with pressure (3.5-2.0Mpa) after being filtered again enters the spray distillation system and is atomized by a spray nozzle, and the strong brine after secondary filtration is. And fresh water steam enters the condenser from the spray evaporation chamber for liquefaction, then enters the fresh water tank for storage, the residual substances enter the crystallization tank, and brine is pumped into the brine pressure tank from the crystallization tank.
After the seawater of one-level high-pressure tank is pressed, the electromagnetic valve communicated with the second-level high-pressure tank is opened, meanwhile, the electromagnetic valve of the one-level high-pressure tank and the electromagnetic valve of the gas storage tank (well) are closed, the residual gas of the one-level high-pressure tank exerts pressure on the seawater of the second-level high-pressure tank, when the residual gas of the one-level tank reaches the set lowest pressure (4.0Mpa), the electromagnetic valve between the first-level high-pressure tank and the second-level high-pressure tank is closed, the electromagnetism between the gas storage tank (well) and the second-level high-pressure tank. When the seawater in the second-stage high-pressure tank is completely pressurized, the electromagnetic valve between the gas storage tank (well) and the second-stage high-pressure tank is closed, and the electromagnetic valve between the second-stage high-pressure tank and the third-stage high-pressure tank is opened to apply pressure to the third-stage high-pressure tank, so that the seawater is circulated in sequence.
When the residual gas of one-level pressure tank reached the design minimum of exerting pressure for the second grade, the solenoid valve between the intercommunication brine pressurized-water tank was opened, and the residual gas (4.0Mpa) of one-level pressure tank pressed to the fog nozzle with the brine in the brine pressurized-water tank, and brine was atomized and was spouted into the spray evaporation chamber and continue to distill and desalt.
When the one-level high-pressure tank exerts pressure to the brine pressurized-water tank and reaches the design minimum, close the solenoid valve of one-level jar and switch over simultaneously to the second grade high-pressure tank and continue to exert pressure to the brine pressurized-water tank. When the residual gas of the primary high-pressure tank reaches the lowest design value of a set brine water-pressurizing tank, opening an electromagnetic valve communicated with a vortex tube unit, leading the residual gas of the primary tank to the vortex tube unit, separating cold and hot gas flows, and leading hot end gas flows to a hot air source of a spray distillation system to provide heat energy for distillation; and (3) allowing the cold-end airflow to enter a condenser to liquefy the distilled fresh water until the residual air emptying electromagnetic valve is closed. And opening an electromagnetic valve of the first-stage high-pressure tank, filling water into the high-pressure tank by the low-pressure pump, and circulating step by step in sequence according to the above. When the air storage tank (well) does not reach the set pressure, the air compressor unit automatically starts to work, and the constant pressure is basically maintained.
Compared with the prior art, the utility model beneficial effect who has is:
RO-spraying coupling low energy consumption water salt coproduction compressed air charge system, at the sea water desalination in-process, brine distills many times, and the return water rate is high, the crystallizing pond can avoid causing a large amount of strong brine to discharge solute and solution thorough separation (salting out) to avoid changing the relevant waters ecological environment in ocean, the environmental protection degree is high.
The air pressure is utilized step by step for multiple times, the energy recovery and utilization rate is high, consumption reduction, efficiency improvement, energy conservation and emission reduction are realized, the energy storage is utilized to resolve the valley electricity to provide technical support for the water conversion from electricity to electricity, and the economic benefit is good.
The utility model has important significance for improving the development of the seawater desalination industry in China for improving the innovation competitiveness of the core technology of the seawater desalination in China.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an air compression energy storage system; 1.1, an air compressor set; 1.2, an air storage tank; 2. a high pressure tank bank; 2.1, a first-level high-pressure tank; 2.2, a secondary high-pressure tank; 2.3, a three-stage high-pressure tank; 3. an RO reverse osmosis unit; 4. a spray distillation system; 4.1, a spray evaporation chamber; 4.2, a spray nozzle; 4.3, a hot air source; 4.4, a condenser; 4.5, a crystallization tank; 4.6, a brine water pressing tank; 5. A vortex tube unit; 5.1, hot end; 5.2, cold ends; 6. a seawater tank; 7. a low pressure pump; 8. a fresh water tank; 9. a gas pipeline; 10. a high-pressure seawater pipeline; 11. a solenoid valve I; 12. a solenoid valve II; 13. a solenoid valve III; 14. an electromagnetic valve IV; 15. A solenoid valve V; 16. a solenoid valve VI; 17. a solenoid valve VII; 18. a solenoid valve VIII; 19. and a solenoid valve IX.
Detailed Description
The invention will be further described with reference to the following examples:
as shown in fig. 1, the RO-spray coupling low energy consumption water and salt co-production compressed air supercharging system of the present invention comprises an air pressure energy storage system 1, the air pressure energy storage system 1 is connected with a high pressure tank group 2, the bottom of the high pressure tank group 2 is connected with an RO reverse osmosis device 3, one end of the RO reverse osmosis device 3 (including a first-level RO reverse osmosis device and a second-level RO reverse osmosis device) is connected with a spray nozzle 4.2 in a spray evaporation chamber 4.1 of a spray distillation system 4, and the other end is connected with a fresh water tank 8; the upper end of a spray evaporation chamber 4.1 is connected with a condenser 4.4, the condenser 4.4 is connected with a fresh water tank 8, the lower end of the spray evaporation chamber 4.1 is connected with a crystallization tank 4.5, the crystallization tank 4.5 is connected with a brine water pressing tank 4.6, the lower end of the brine water pressing tank 4.6 is connected with a spray nozzle 4.2 in the spray evaporation chamber 4.1, and the upper end of the brine water pressing tank 4.6 is connected with a high-pressure tank group 2 and an air pressure energy storage system 1; the spray distillation system 4 also comprises a hot air source 4.3, and the output end of the hot air source 4.3 is arranged in the spray evaporation chamber 4.1.
The hot air source 4.3 is connected with the hot end 5.1 of the vortex tube unit 5, the cold end 5.2 of the vortex tube unit 5 is connected with the condenser 4.4, the vortex tube unit 5 is connected with the high-pressure tank unit 2, and the high-pressure tank unit 2 provides an air source.
The high-pressure tank group 2 of this embodiment includes three high-pressure tanks, through pipeline interconnect between the adjacent high-pressure tank, is equipped with the solenoid valve on the pipeline.
The high-pressure tank group 2 of the embodiment is further connected with a seawater tank 6, clean seawater is stored in the seawater tank, and the seawater tank supplies seawater to be desalinated to the high-pressure tank group through a low-pressure pump.
The air compression energy storage system 1 of this embodiment includes air compressor machine 1.1 and gas holder 1.2, and air compressor unit 1.1 and gas holder 1.2 pass through pipe connection in high-pressure tank group 2 respectively.
The utility model discloses a theory of operation:
the air compressor unit injects 8-9Mpa compressed air into a gas storage tank (well) in the valley electricity time period to be stored as power sources of an RO reverse osmosis device and a spray distillation system, a solenoid valve IV 14 is opened, the treated seawater is pumped into a high-pressure tank (group) by a low-pressure pump, the solenoid valve IV 14 is closed, a solenoid valve I11 communicated with the gas storage tank (well) is opened, a solenoid valve V15 is opened, the compressed air pressurizes the seawater in a first-stage high-pressure tank, the seawater is pressed into the RO reverse osmosis device, after being filtered by an RO reverse osmosis membrane tube, the fresh water at one end flows out to enter a fresh water tank, or performing RO filtration again, allowing the strong brine with pressure (4.5-6.5Mpa) at the other end to pass through a two-stage RO reverse osmosis device, allowing the strong brine with pressure (3.5-2.0Mpa) after filtration to enter a spray distillation system, atomizing by a spray nozzle, and spraying the strong brine after secondary filtration to a spray evaporation chamber. And fresh water steam enters the condenser from the spray evaporation chamber for liquefaction, then enters the fresh water tank for storage, the residual substances enter the crystallization tank, and brine is pumped into the brine pressure tank from the crystallization tank.
After the sea water of one-level high-pressure tank is pressed, the solenoid valve II 12 that communicates in the second grade high-pressure tank is opened, and simultaneously, the solenoid valve I11 of one-level high-pressure tank and gas holder (well) is closed, and solenoid valve V15 is closed, and the sea water of second grade high-pressure tank is exerted pressure by the residual gas of one-level high-pressure tank, when one-level jar residual gas reaches atmospheric pressure and sets for minimum (4.0Mpa), solenoid valve II 12 between one-level, the second grade high-pressure tank is closed, electromagnetism between gas holder (well) and the second grade high-pressure tank is opened, and gas holder (well) continues to pressurize for the. When the seawater in the second-stage high-pressure tank is completely pressurized, the electromagnetic valve between the gas storage tank (well) and the second-stage high-pressure tank is closed, and the electromagnetic valve between the second-stage high-pressure tank and the third-stage high-pressure tank is opened to apply pressure to the third-stage high-pressure tank, so that the seawater is circulated in sequence.
When the residual gas of one-level pressure tank reached the design minimum of exerting pressure for the second grade, the solenoid valve VI 16 between the intercommunication brine pressurized-water tank was opened, and solenoid valve VIII 18 was opened, and the residual gas (4.0Mpa) of one-level pressure tank pressed the brine in the brine pressurized-water tank to the atomizer, and brine was atomized and was spouted into the spray evaporation chamber and continue to distill and desalinate.
When the pressure of the primary high-pressure tank on the brine water-pressurizing tank reaches the design lowest value, the electromagnetic valve I11 of the primary tank is closed, and meanwhile, the secondary high-pressure tank is switched to continue to apply pressure on the brine water-pressurizing tank. When the residual gas of the primary high-pressure tank reaches the lowest design value of a set brine water-pressurizing tank, opening an electromagnetic valve III 13 communicated with a vortex tube unit, leading the residual gas of the primary tank to the vortex tube unit, separating cold and hot gas flows, and leading hot end gas flow to enter a hot air source of a spray distillation system to provide heat energy for distillation; and the cold-end airflow enters a condenser to liquefy the distilled fresh water until the residual air emptying electromagnetic valve III 13 is closed. And opening an electromagnetic valve IV 14 of the first-stage high-pressure tank, filling water into the high-pressure tank by the low-pressure pump, and circulating step by step according to the above sequence. When the air storage tank (well) does not reach the set pressure, the air compressor unit automatically starts to work, and the constant pressure is basically maintained.
1. An air compression energy storage system; 1.1, an air compressor set; 1.2, an air storage tank; 2. a high pressure tank bank; 2.1, a first-level high-pressure tank; 2.2, a secondary high-pressure tank; 2.3, a three-stage high-pressure tank; 3. an RO reverse osmosis unit; 4. a spray distillation system; 4.1, a spray evaporation chamber; 4.2, a spray nozzle; 4.3, a hot air source; 4.4, a condenser; 4.5, a crystallization tank; 4.6, a brine water pressing tank; 5. a vortex tube unit; 5.1, hot end; 5.2, cold ends; 6. a seawater tank; 7. a low pressure pump; 8. a fresh water tank; 9. a gas pipeline; 10. a high-pressure seawater pipeline; 11. a solenoid valve I; 12. a solenoid valve II; 13. a solenoid valve III; 14. an electromagnetic valve IV; 15. a solenoid valve V; 16. a solenoid valve VI; 17. a solenoid valve VII; 18. a solenoid valve VIII; 19. and a solenoid valve IX.
The main parts of the present invention are further explained below, and examples are given to illustrate the feasibility:
the air compression energy storage system 1 converts valley electricity or excess light wind along the sea into compressed air through an air compressor unit 1.1, and the compressed air is injected into an air storage tank 1.2 (well) to be stored as power sources of an RO reverse osmosis device 3 and a spray distillation system 4.
The air compression energy storage system 1 consists of an air compressor unit 1.1, an air storage tank 1.2 (well) and a pipe valve. The utility model discloses a working pressure 6.0-10Mpa that the air compressor machine selected between, the type can be piston, rotatory screw formula, bipolar permanent magnetism frequency conversion type commentaries on classics sliding vane formula, multistage combined type etc. and the air compressor machine can be single or many parallelly connected uses, will select corresponding displacement according to the handling capacity design of sea water desalination engineering, and unit displacement 15-100m3/min gas holder (well), the utility model discloses a gas holder (well) can be existing mine or cave transform into fixed large-scale gas storage "jar", also can newly-built underground gas well, its advantage does not occupy the ground space, also can adopt steel pressure vessel jar, and its bearing capacity is more than or equal to 15Mpa, gas holder (well) can be single also can be a plurality of series-parallel connections.
The utility model discloses an air compression energy storage system replaces the water pump with the air pump.
The method has the advantages of reducing water pumping energy consumption, reducing equipment investment, prolonging the service life of equipment and utilizing valley electricity to store energy, save energy and reduce emission.
The equipment model selection and energy storage of the air compression energy storage system are determined according to the seawater desalination scale, and the following is a specific embodiment.
Example 1:
sea water desalination engineering design scale 5000T/d, the utility model discloses a corresponding equipment of air compression energy storage system as follows:
the air compressor is a piston type two-stage composite booster compressor, the rotation speed of 110kw/980 is 80/10, one of the two compressors is used, the air displacement is 8.0Mpa, and the air displacement is 10m3Min, exhaust volume per hour 600m3H, exhaust gas volume 14400m per day3/d。
Because the scale of desalination is small, the gas storage tank (well) is selectively pressed by steelForce tank, carbon steel thickness 38mm, specification 3000X 30000, volume 211m3The pressure bearing capacity of the pressure tank is more than or equal to 14Mpa, 10 gas storage pressure tanks are connected in series or in parallel, and the total gas storage capacity is 2100m3Is connected with the air compressor in parallel.
Example 2:
sea water desalination engineering design scale 50000T/d, the utility model discloses a corresponding equipment of air compression energy storage system as follows:
the air compressor is pressurized by two-stage combined rotary screw rod type and rotary sliding vane type, 250kw/980, 90/24, and the air displacement is 24m3Min, 9.0Mpa, 1440m per hour334560m a day3D, adopting three machines with two functions and one standby, and the exhaust gas quantity of 9.0Mpa pressure is 69120m3/d。
The air storage tank (well) has been improved or newly built in mine, the depth of the well is 300m, the diameter is 10m, 300X 10, the wall of the well is made of concrete and is treated by water-proofing and moisture-proofing treatment, the well head portion is 45mm thick carbon steel spinning seal head, 5 air storage tanks (wells) are built in the project, and the total amount of the air storage tanks (wells) can store 23550X 5, 117750m3The air is compressed. The 5 energy storage wells are connected in parallel and connected with the air compressor, and the electromagnetic valves are installed between the energy storage wells and the air compressor.
Example 3:
design sea water desalination engineering scale 100000T/d, the utility model discloses a corresponding equipment of air compression energy storage system as follows:
the air compressor is a bipolar permanent magnet frequency conversion type two-stage supercharging with the pressure of 300kw/980, 90/30 and 9.0Mpa/30m2Min, single machine displacement 30m3/min，1800m3/h，42200m3Design and installation 90/30, 5 air compressors, four spare air compressors, total displacement (9.0Mpa)168800m3And d, the three machines can be connected in series or in parallel.
The energy storage well (tank) has a waste mine which is measured to be 20m3, and through the transformation and compression test, the energy storage well (tank) can reach the safe pressure bearing of 16Mpa, and the energy storage well (tank) can store 9Mpa compressed air by 20 ten thousand m by connecting an air compressor with the energy storage well (tank)3。
Not only effectively reduce the cost of making water by utilizing the valley electricity energy storage, but also clear up offshore photovoltaic offshore wind power, and the application of the electric power is beneficial to the peak regulation of a power grid in an invalid period.
The most intuitive benefit of using an air pump instead of a water pump is illustrated by the following examples:
example 4:
50000m of seawater desalination capacity of certain design3(T)/a engineering, a booster pump and a multistage centrifugal pump are used, wherein the multistage centrifugal pump is 8.5Mpa and 200m3And/n, 16 water pumps are used for a single water pump power 600kw project.
1. Theoretical ton water power consumption: 3kwh/m3(600÷200＝3)
2. Economic indexes are as follows: the purchase cost of a single import pump is 600 ten thousand yuan, 16 import pumps (without standby) are 9600 ten thousand yuan, the purchase value of a single domestic pump is 460 ten thousand yuan, 16 import pumps are 7360 ten thousand yuan.
3. Service life of 3 years due to seawater corrosion
<II>Adopt the utility model discloses an air compression energy storage system, air compressor machine, piston and spiral shell mark, second grade booster pump 250kw 980, 90/24, unit displacement 1440m per hour3/h，9.0Mpa，3456m3D, 2 air compressors, 9.0MPa pressure, 69120m exhaust volume per day3/d。
1. Theoretical voltage of 5.76m per degree water3/kwn(1440÷250)
I.e. equivalent to 0.17kwn/m for pressing one ton of water3
2. Economic indexes are as follows: the purchase value of a single air compressor is 50 ten thousand yuan, and 2 air compressors account for 100 ten thousand yuan
3. The service life can reach 15 years
< III > can be seen through simple comparison that the utility model discloses an energy-conserving festival cost benefit that is showing than traditional prior art
1. Theoretical ton water power consumption: 3.0kwh/m in the prior art30.17kwh/m of the utility model3In the prior art, the energy consumption of the utility model is 17 times higher than that of the utility model when 1 ton of water is pressurized.
2. Economic indexes are as follows: the purchase cost of the prior art is 9600 ten thousand yuan, the utility model discloses 100 ten thousand yuan, the equipment investment is higher than 96 times (does not contain the high-pressure tank), contains 16 times of high-pressure tank.
3. Because the sea water has strong corrosivity, the life-span is shorter, the utility model discloses no moving part contacts corrosive medium, and life is longer, and is more than 5 times than existing equipment life.
And the high-capacity gas storage well (tank) is mainly used for regulating the peak of a power grid by using an energy storage function, and the direct benefit of energy conservation and emission reduction is that the price of valley electricity is 0.32 yuan/kw.h, including the use part in the daytime, and is 0.46 yuan/kw.h on average.
The conventional water pump can not store energy, and the electricity consumption is that the average electricity price of the instant valley peak is 0.86 yuan/kw.h, which is 1.86 times higher on average.
The contrast of the above embodiment is only calculated from one ton of theoretical pump water, and does not consider the use of an energy recovery device, and the utility model discloses a gradient gas consumption multiple-effect is used.
< five > high-pressure tank
The high-pressure tank is the core technology part of the utility model discloses an utilize compressed air to pass through the high-pressure tank and impress the sea water RO device, and atomizer and vortex tube separation cold and hot energy. The high-pressure tank is metal pressure vessel, consider the corruption and the bearing capacity of sea water, two main technical demands, the utility model discloses a high-pressure tank can be the anticorrosive compound jar body of stainless steel or carbon steel tank inner liner, high-pressure tank's upper portion mainly has the pneumatic valve solenoid valve of connecting each part, there is the sea water solenoid valve lower extreme bottom, and through pipe connection between RO device and each high-pressure tank, high-pressure tank's bearing capacity 10-15Mpa, working medium pressure 8.5-4.5Mpa, high-pressure tank is generally 1 or a plurality of in whole engineering, design tens of several or tens of according to the use needs and vary, high-pressure tank's monomer capacity also is according to the demand, can be several cubic meters to tens of cubic meters or several hundreds of cubic meters vary.
Example 1:
two important technical requirements of the high-pressure tank 2 are pressure bearing performance and corrosion resistance, and the stainless steel material tank is selected according to the two important technical requirements.
1. The material model is as follows: SUS 316 stainless steel plate is rolled, the corresponding sealing heads at the upper part and the lower part of the tank body are processed by spinning, the specification is 35 XDN 3000 X10000 (mm), and the capacity is 70m3And the pressure bearing performance is not less than 12Mpa, and a compression test is carried out.
2. The material model is as follows: SUS 316, 35 XDN 4000 XD25000 (mm) in specification, capacity thereofIs 314m3And the pressure bearing performance is not less than 13Mpa, and a compression test is carried out.
3. The material model is as follows: 20G/FRP carbon steel, specification 40 XDN 3500 XD 20000(mm), capacity 192m3。
The lining is 8mm thick, the epoxy resin glass fiber reinforced plastic anticorrosive coating or lining plastic is 10mm thick, the PE plastic anticorrosive coating has the bearing performance of 13.8Mpa, and the compression test is carried out.
The three pressure tanks can meet the performance requirements of the high-pressure tank.
The lower end enclosure of the high-pressure tank is provided with a seawater incoming pipe valve, a seawater pipe valve communicated with the RO device and a seawater pipe valve connected in parallel between the high-pressure tanks.
The upper end enclosure is provided with an air pipe valve connected with an air pressure energy storage system, a pipe valve connected with a vortex pipe unit, a pipe valve between brine pressure tanks of a spraying system and a parallel pipe valve between high pressure tanks 2.
Example 2:
the number of the high-pressure tanks 2 in each desalination project can be one or more, and even dozens or hundreds of dozens according to the desalination scale requirement.
1. The desalination capacity of a certain seawater desalination engineering design is 5000T/m3Designing a high-pressure tank according to the above specification of 30 XDN 3000X 25000(mm), material SUS 304, seawater capacity of 176m 34 high-pressure tanks of total capacity 704m3I.e. 704m of water per cycle3If the backwater rate is 50%, 352m of fresh water is produced3And the design of 5000m can be met by 14 times of pressurized water circulation3The requirements of (a).
2. The desalination capacity of a certain seawater desalination engineering design is 50000m3(not containing spray distillation)
The high-pressure pump is designed to be made of carbon steel lining plastic 20G/pp, the specification is 40 multiplied by DN3500 multiplied by 20000(mm), and the monomer capacity is 192m330 high-pressure tanks with total capacity of 5760m3That is, each cycle of pressurized water 5760m3, the water return rate is 70%, 4032m3And 12.5 times of circulation can meet 50000m3Design requirement of/a.
3. The desalination capacity of the water production designed by a certain seawater desalination project is 200000m3
The material of the pressure tank is SUS 304, the specification is 40 XDN 3000 XD500 00(mm), the monomer capacity is 353m3Design the number of high-pressure tanks to be 55, and the total capacity to be 19415m3The backwater rate is 50 percent and 9707m320 cycles can meet the daily yield of 200000m3Design requirement of/a (no spray distillation).
4. If the occupied area of the high-pressure tank is reduced and the number of the high-pressure tanks is reduced, the tower type high-pressure tank with the same working condition as that of the high-pressure tank in the embodiment 3 is required, the specification is 40 multiplied by DN3000 multiplied by 1000000, the monomer capacity is 706m3, the number of the high-pressure tanks is 40, and the total capacity is 28260m3The backwater rate is 50 percent, 14130m3And 7 cycles can satisfy 10 km3Design requirement of/a.
Vortex tube set
Vortex tube unit is the utility model discloses a clear up low gas residual gas, through the separating action of vortex tube, turn into the cold and hot air current of cold and hot energy production with compressed air for spray distillation system. The vortex tube unit is composed of more than one vortex tubes. The vortex tubes are connected in parallel, and a hot air outlet and a cold air outlet of the vortex tubes are connected in parallel and are respectively connected with a hot air source air inlet of the spraying device and the condenser to provide cold and hot energy for spray distillation.
Example 1:
the utility model discloses an among the seawater desalination engineering, adopt SUS stainless steel's vortex tube, gas consumption (1.0Mpa)30m3The air flow ratio of cold to hot air is 1:1, the hot air temperature of compressed air at the normal temperature of 20 ℃ can be separated to be 100 ℃, the cold air temperature is-30 ℃, hot air is output from a hot air source inlet of the spray distillation system to provide heat for an evaporation chamber, the cold air provides cold air for a condenser of the spray distillation system to maintain the dew point temperature, the number of the vortex tubes is designed to be 50, namely the air consumption is 30 multiplied by 50 to 1500m3/min，90000m3/h。
The vortex tube has no moving parts, is durable, is not easy to have a fault problem, and has a service life of more than or equal to 30 years.
Example 2:
in the seawater desalination engineering designed by the technical process of the utility model, the vortex tube of the vortex tube unit is made of 316L stainless steelSteel, gas consumption of 100m3The air flow ratio of the ultra-large vortex tube is 1:1.5, hot air at 103 ℃ can be separated from compressed air at normal temperature of 20 ℃, cold air at minus 40 ℃ (1.0Mpa) can be separated, the number of the vortex tubes is 80, namely, the air consumption is 100 multiplied by 80 which is 8000m3/min，480000m3And h, the design can meet the requirement of matching with a larger seawater desalination project.
Example 3:
the requirement of the spray distillation system on heat is unchanged all the year, when plate type hot air exchange and air exchange condensation are adopted, cold air is adopted to maintain the dew point temperature difference, the requirement in summer is large, the requirement in winter is small, particularly in hot summer and cold winter areas in northern areas, the problem of pipeline heat preservation is considered, a vortex tube unit is arranged at one end of the spray distillation system, a pipeline from a high-pressure tank to a vortex tube can be simply insulated, the separated hot air and cold air pipeline is normally insulated by using a heat insulating material to reduce cold and heat loss, if a compressed air pipeline is insulated by using 50mm, glass wool or a 30mm thick XPS pipe shell, and a cold and hot air pipeline is insulated by using 50-60mm PU foam to reduce energy consumption.
Spray distillation system
The spray distillation is also called as a rapid spray method or called as a humidifying and de-wetting method, and mainly has the functions of treating strong brine after RO filtration, and realizing water and salt co-production through spray evaporation and brine preparation, thereby achieving the comprehensive utilization of seawater and solving the problem of environmental ecological damage caused by strong brine discharge.
The spray distillation system consists of a spray evaporation chamber, a spray nozzle, a hot air source, a condenser, a crystallization tank, a brine water pressing tank and demisting fillers.
The strong brine under pressure that is filtered by second grade RO device through fog nozzle or by brine pressurized-water tank, through the atomizer, spouts strong brine or brine into spraying service evaporation chamber, hot-blast at the hot-blast of hot-blast source, makes it evaporate little fog for steam, steam admission condenser under the transport of fan, through heat exchange steam change distilled water outflow, the concentrated fog drop of brine that does not gasify completely flows into the crystallizer, after reaching the crystallization degree of bittern, can salt manufacturing, carry potassium, bromine, receive salt, magnesium salt etc..
Spray distillation is a low-temperature phase conversion process, the particle size of 10-30um fog drops can be evaporated and gasified at 51 ℃, and the heat source can be natural energy such as solar energy, terrestrial heat and the like or industrial waste heat utilization and the like. The utility model discloses a main problem of solving of spray distillation system is, carries out the secondary desalination with RO filtration back exhaust strong brine, makes it reach crystal concentration, realizes the water salt coproduction, reaches zero row.
Example 1:
the spray evaporation chamber adopts a solar building with an integrated heat collection structure, the structure is 100 multiplied by 10 multiplied by 4M, the structure is an east-west structure, the south wall and the top plate are 8.3mmV glass (ultra-white toughened vacuum glass), and the heat transfer coefficient is 0.4w/M2K, the north wall is a PU sandwich board with the thickness of 150mm, the surface of the inner wall is pasted with a vanadium-titanium heat absorption ceramic tile, the absorptivity is 92%, and the emissivity is 80%.
The lower part of the spray evaporation chamber is provided with a crystallization tank, a hot air source which is a 2 multiplied by 500 million calories, a natural gas hot air furnace, 10 hot air inlets are distributed on the north wall at the lower part, the temperature of input hot air is 120 ℃ constant, 10 steam outlets are distributed at the upper end, stainless steel demisting fillers are distributed at the lower part of an air port, a condenser is an air-air or plate heat exchanger, condensed distilled water is pumped into a fresh water storage tank, the hot air after heat exchange is led to the natural gas hot air source, and the heat exchange area is 2000m2X 2, 2 heat exchange condensers with 75 percent of heat exchange efficiency and 40 ten thousand m of air volume2/h×2。
The spray nozzle is made of silicon carbide corrosion-resistant material, and is uniformly filled with 1500mm and 1.5m materials and arranged on the water surface of the crystallization tank2One nozzle is arranged, 666 nozzles are arranged in total, 366 nozzles are connected to the RO secondary filtration strong brine, and 300 nozzles are connected to the brine water pressurizing tank.
The brine water pressing tank can be the same as the high-pressure tank in material or volume, the bearing performance can be reduced to be not lower than 5.0Mpa, and the spray mist is controlled to be 15-30 um.
The water-spraying system is derived from the brine of RO filterable strong brine and brine pressurized-water tank, the cold and hot air current that vortex tube unit separation produced gets into the condenser respectively and maintains dew point temperature, the hot gas flow gets into hot air source or directly gets into the spray distillation room, the condenser spring and autumn winter is because the great dew point that reaches easily of difference in temperature, when summer, when environment new trend high vortex tube air conditioning is not enough, can consider outer cold source, 75% heat recovery new trend after the heat transfer gets into hot air source, embody its energy-efficient heat cycle utilization, the self thermal-arrest characteristics of the thermal-arrest structure integration of spray evaporation room in addition, embodied the utility model discloses a spray distillation system's energy-efficient nature. The TDS of the prepared fresh water is less than or equal to 50 mg.
Example 2:
the spray type of this embodiment is a tower structure, 10 × DN4000 × 50000, the middle upper part of the material is SUS 304, the middle lower part is 310S stainless steel, 24 layers of spray nozzles are installed in the tower, each layer has 5 spray nozzles, the lower six layers are silicon carbide nozzles, the upper six layers are stainless steel 316L nozzles, the lower end is provided with 3 hot air sources, and 35 ten thousand large calipers × 3 of a natural gas burner are used for directly spraying fire to the spray tip.
The bottom has brine to collect the funnel, leads directly in the crystallization tank, and stainless steel defogging is installed on upper portion and is packed and spray the mouth, regularly washs the salt of crystallizing on the packing, and the top fan that the defogging was packed is taken steam out through the pipeline, lets in the condenser, and the condenser shell and tube formula, new trend and steam heat transfer, distilled water flow in fresh water jar, and the combustor is sent into to the new trend of heat transfer, and fresh water latent heat and sea water heat transfer are retrieved.
The cold air and the hot air separated by the vortex tube machine set respectively enter the condenser and the air inlet of the combustor, and the cold air can be discharged without needing the cold air due to the low environment temperature of the fresh air in winter. When the ambient temperature is high and the cold air is not enough to maintain the dew point in summer, a cold air conditioner can be additionally arranged to assist condensation.
The tower type multilayer direct-fired spray distillation system of the embodiment heats and gasifies layer by layer, has multiple effects and high-efficiency energy-saving effect, and the TDS for preparing fresh water is less than or equal to 50 mg.
Above-mentioned two embodiments of the utility model all belong to neotype spray distillation technique, or utilize new forms of energy natural energy, or utilize tower multiple-effect multilayer spraying, all embody its energy-efficient effect, and the crystallization tank can prepare various salt step by step when reaching 25-30% salt content and reach the zero release.
< eight > RO reverse osmosis apparatus
The RO reverse osmosis device belongs to a known technical product, and not described more, the RO device is a two-stage filtration, the first stage is seawater filtration, the second stage is strong brine filtration, the second stage is series connection, and the pressure resistance of a semipermeable membrane is selected to be 8.9MPa-4.2 MPa.
< nine > RO-spraying coupling low energy consumption water salt coproduction compressed air supercharging system integrated embodiment:
50000m in design scale of certain seawater desalination engineering3And d, adopting the technical process of the utility model, the technical scheme is as follows:
1. the air compressor of the air compression energy storage system is a rotary screw rod and a rotary sliding vane or a two-stage supercharging type, the power is 280kw/980 r, 90/30 is 9.0Mpa, and the air displacement is 30m3Min, three air compressors are installed, two air compressors are used, one air compressor is used, 9.0Mpa is used every day, and the compressed air is 86400m3D, can satisfy 50000m3The design requirement of (2) mainly considers that valley electricity energy storage reduces gas production in the daytime.
The energy storage well (tank) utilizes the energy stored by the ground well, and 8 energy storage wells with the well depth of 200m and the well diameter of 8.0m, namely 8 multiplied by 10048 and 80384m3Total storage of (c).
2. SUS 304 stainless steel with specification of 40 XDN 3500 XD 20000 and monomer capacity of 192m330 high-pressure tanks with total capacity of 5760m35760 tons of pressurized water in each cycle, and the pressure can meet 50000m after 15 cycles3Design requirement of/d.
3. The RO device is connected in series by two-stage filtration, the first stage filters seawater, the second stage filters strong brine, the RO device adopts 8 inch membrane tubes made of ceramic paper, the working pressure resistance is 8.9Mpa-4.2Mpa, and the pressure resistance is 50000m3And designing and installing the/d desalination amount.
4. Spray distillation system: the spray evaporation chamber is designed for tower type multi-layer spray, and is made of SUS 304 with specification DN5000 × 30000 × 15, spray towers are 5, each tower has 15 layers of spray groups, each layer has 5 nozzles, and is made of SUS 316L with total 375 spray nozzles, spray flow rate is 80kg/min (3.0Mpa), and total flow rate is 43200m3/d。
The hot air source is a waste heat steam fan coil of a nearby factory, the hot air temperature is 150 ℃, and the flow rate is 40 ten thousand meters3And the brine water pressing tank is 15 in material specification and the number of the high-pressure tanks, and spraying is provided for circulating spray evaporation of the crystallization tank.
5. A vortex tube unit: vortex tube material is SUS 304, displacement(1.0Mpa)30m3Min, cold-hot air flow ratio of 1:1, 60 vortex tubes with total air consumption of 30 multiplied by 601800 m3/min，108000m3Compressing air at normal temperature of 20 ℃, separating cold air and hot air at the temperature of 100 ℃ and cold air of-30 ℃, introducing the hot air into a spray evaporation chamber or into a hot air source, and introducing the cold air into a condenser to maintain the dew point temperature.
Example (b):
design scale of 20 ten thousand meters for a certain seawater desalination project3A, the technical scheme of the technical process of the utility model is as follows:
1. the air compression energy storage system comprises:
the air compressor is a bipolar permanent magnet frequency conversion type two-stage supercharging at 300kw/980 and 90/30, namely 9.0Mpa/30m3Min, single machine displacement 1800m3/n，43200m3A, design installation quantity 9, 7 with 2, total exhaust amount 302400m3A (9.0Mpa), 7 machines are connected in parallel.
The energy storage well (tank) is a abandoned cave 30 ten thousand meters3After being reformed, the air compressor unit can bear pressure of 16Mpa safely, and can store 30 ten thousand meters by connecting the air compressor unit with the air compressor unit39.0Mpa of compressed air.
2. High-pressure tank:
the design is 20G/SUS 304 stainless steel composite tank with specification of 40 XDN 3500 X80000 and monomer tank capacity of 769m325 high-pressure tank groups and total tank capacity 19225m 316 times of circulation, can meet 20 ten thousand meters3The design requirement of/a, in order to increase the pressurized water quantity of each circulation, 25 high-pressure tanks can be divided into 2-3 groups, and the pressurized water quantity is increased.
3. And (3) RO device:
the RO device is serially connected with the high-pressure tank for two-stage filtration, the first stage is used for filtering seawater, the second stage is used for filtering strong brine after the first stage is used for filtering, the RO device adopts Dongli 8-inch membrane tubes, the working pressure is 8.9-4.2Mpa, the RO device group corresponds to the high-pressure tank, and if the high-pressure tank is divided into 3 groups, the RO device is also divided into 3 groups.
4. Spray distillation system:
the spray evaporation chamber is constructed on a crystallization tank of a solar salt farm, and can collect heat by using the sun and is integrated with the structureThe high-transparency PC board is an arch-shaped high-transparency (two sides on the south) structure, the material is a high-transparency PC material, the structure is in the east-west direction, the thickness specification of the PC board is 5.0 multiplied by 4800, the structure has the span of 40 meters, the length of 100 meters and 40 multiplied by 100, the arch height of 3.5 meters and the number of the PC board is 20, and the total area is 80000m 3. One nozzle is arranged at each 3.0m2, 26660 nozzles are totally made of silicon carbide, the spraying flow rate is 30kg/min, and the total flow rate per hour is 47988m3/h，1151712m3/d。
The hot air source is geothermal energy, the temperature of the hot air is 110 ℃, and the flow rate of the hot air is 10 multiplied by 25 ten thousand meters3And n, the condenser is a wind-wind (hydrophilic aluminum foil) plate heat exchanger and a shell-and-tube heat exchanger composite type mixed condenser, the heat recovery efficiency is 75%, and the total amount of wind flow is 250 ten thousand m 3/h.
The advantage of this spray distillation system, solar energy collection structure integral type can collect the rainwater in rainy day, is fit for the grafting at the salt solarization factory, has improved salt output and quality promptly, does not occupy other lands in addition again.
5. A vortex tube unit:
vortex tube material SUS 304, gas consumption (1.0Mpa)35m3Min, the cold-heat flow ratio is 1.2:1, the number of the designed vortex tubes is 250, and the total gas consumption is 8750m3/min，525000m3The temperature of cold and hot air separated by the vortex tube is-26 ℃ and 110 ℃ at the normal temperature of 20 ℃.
The embodiment is grafted on the edge of a crystallizing pond of a solar salt farm, so that comprehensive utilization and extraction of sodium sulfate, sodium chloride, magnesium chloride, calcium sulfate, potassium chloride and sodium bromide are facilitated, and the aim of zero emission is fulfilled.
For embodying the utility model discloses an effect utilizes the running cost at energy storage millet electricity, equipment investment cost, life and maintenance cost, the data contrast is done with the tradition in the aspect of environmental protection nature zero release, comprehensive cost and comprehensive benefit etc. and its contrast data are got from market quotation with the utility model discloses above-mentioned two embodiments are the contrast, to high-pressure pump and energy recuperation device.
The bulk embodiment:
the traditional high-pressure booster pump of the RO system occupies 25 percent of sea-fresh engineering (imported equipment) by investment, 15 percent of energy recovery device and 10000 Yuan/T of water investment of the RO system, and if the high-pressure booster pump with better quality is adoptedThe ratio of the inlet equipment, the booster pump and the energy recovery device is 40 percent, namely 4000 yuan/T in investment per ton of water, if 50000 ten thousand m3And a, 2 billion yuan investment of a booster pump and an energy recovery device.
Because the traditional RO system has no energy storage system, the average charging of the day and night electricity fee is 0.86 yuan/kw.h.
The water production energy consumption of the traditional RO system is 3-4.5kw.h/m3I.e., 2.58-3.87 yuan/m 3.
TDS：≤500mg。
The water return rate: 35 to 55 percent of
The pure booster pump theoretically uses 600KW/200m3The water return rate of the pump is 55%, under the condition that 20 pumps have no energy recovery devices, the power consumption of the pump m3 is 3.0kwh, the theoretical total power is 600 multiplied by 20, 12000kw is achieved, and the total power consumption is 288000 kwh.
Data comparison as per example 150000 m3/d
Total investment 2000+2160 of air compression energy storage system and high-pressure tank is that above-mentioned RO contrasts the nearly 1/5 of investment for 4160 ten thousand yuan, and the RO system investment is the utility model discloses a 4.8 times.
Due to the fact that the valley electricity (0.32) is utilized by the air compression energy storage system, energy storage is reduced relative to daytime energy consumption, the average electricity price is 0.46 yuan/kwh, and is 53% compared with the average electricity price of an RO system.
The theoretical power consumption of the third cubic meter of pressurized water is 0.156kwh/m30.072 yuan/m3Compared with the traditional booster water pump, the pressure water per ton is 3.0kwh/m3The energy consumption is 19 times that of the utility model, which is the comparative energy consumption of the pure theory filter pressing seawater per cubic meter.
Because traditional RO device has adopted energy recuperation device, 60-87% energy is retrieved, and the utility model discloses a for spraying system provides the cold and hot energy utilization of separation of spraying pressure and vortex tube unit, to having marked the energy recuperation effect of RO device.
Fourth the utility model discloses a mixed water TDS of RO + spraying is less than or equal to 300 mg.
The backwater rate is more than or equal to 95%, and zero emission is realized.
The utility model discloses sea water desalination passes through RO and spray distillation coupling, has realized the water salt coproduction, and not only system water produces the cost, because the salt chemical industry product that a large amount of industrial agriculture of sea water integrated utilization production used still creates considerable economic benefits moreover.
Example of refuse
First the embodiment of the utility model discloses embodiment and traditional contrast data: the total investment is 18 hundred million yuan
The traditional RO system engineering is 20 km3(ii)/d, its ton water investment 9000 yuan/m3The booster pump and the energy recovery device are imported by 50 percent and made in 50 percent of China, and the proportion of the booster pump and the energy recovery device accounts for 32 percent of the total investment and is 5.76 hundred million yuan.
Due to the fact that no energy is stored, the average electricity price is 0.86 yuan/kw.h
The energy consumption of traditional RO water production is 3-4.5kw.h/m3I.e. 2.58-3.87 yuan/m3
⑷TDS≤500mg
35-55% of fifthly, the cost of water production energy consumption per day is 51.6-77.4 ten thousand yuan/a
Sixthly, the service life of the moving part is less than or equal to 3 years
The utility model desalinates sea water by 20 ten thousand meters3A comparative data:
the total investment of an air compression energy storage system and a high-pressure tank is 350 plus 3000 plus (25 x 550) to 1.7 billion yuan, which is 29.5% of the investment of the traditional RO.
Do a matter because the utility model discloses a valley electricity energy storage average price of electricity 0.46 yuan kw.h, 53% than the RO traditional average price of electricity.
0.156kwh/m of theoretical pressurized water per cubic meter30.072 yuan/m3And compared with the traditional RO, the energy consumption and the operation cost are obviously reduced.
Because there is energy recuperation in the traditional RO technology, and the utility model discloses a spray distillation provides the cold and hot energy utilization of spraying pressure service and vortex tube separation, is equivalent to almost and has marked the energy recuperation effect.
Namely, the water is only pressurized with water per cubic meter at 0.156KWH/M without considering the spray and the utilization of cold and hot energy30.072 yuan/m3It is already a very energy-saving effect.
⑷TDS≤300mg
The back water rate is more than or equal to 95 percent, and zero emission is realized
Sixthly, the service life of the equipment is more than or equal to 25 years
Realizes the water-salt co-production and generates considerable economic benefit
To sum up the comprehensive data contrast with the embodiment, the utility model discloses at energy storage equipment investment, operation energy consumption, running cost, return water rate and need discharge, sea water comprehensive utilization production have higher value salt chemical products, show than traditional RO sea water desalination advantage, the competitiveness is strong, provides technical support for sea water desalination's industry innovation development.
Claims (5)
1. The utility model provides a low energy consumption water salt coproduction compressed air supercharging system of RO-spraying coupling which characterized in that: the device comprises an air pressure energy storage system (1), wherein the air pressure energy storage system (1) is connected with a high-pressure tank group (2), the bottom of the high-pressure tank group (2) is connected with an RO (reverse osmosis) device (3), one end of the RO device (3) is connected with a spray nozzle (4.2) in a spray chamber (4.1) of a spray distillation system (4), and the other end of the RO device is connected with a fresh water tank (8); the upper end of the spray chamber (4.1) is connected with a condenser (4.4), the condenser (4.4) is connected with a fresh water tank (8), the lower end of the spray chamber (4.1) is connected with a crystallization tank (4.5), the crystallization tank (4.5) is connected with a brine water pressing tank (4.6), the lower end of the brine water pressing tank (4.6) is connected with a spray nozzle (4.2) in the spray chamber (4.1), and the upper end of the brine water pressing tank (4.6) is connected with a high-pressure tank group (2) and an air pressure energy storage system (1); the spray distillation system (4) also comprises a hot air source (4.3), and the output end of the hot air source (4.3) is arranged in the spray chamber (4.1).
2. The RO-spray coupled low energy water salt co-production compressed air supercharging system of claim 1, wherein: the hot air source (4.3) is connected with the hot end (5.1) of the vortex tube unit (5), the cold end (5.2) of the vortex tube unit (5) is connected with the condenser (4.4), the vortex tube unit (5) is connected with the high-pressure tank set (2), and the high-pressure tank set (2) provides an air source.
3. The RO-spray coupled low energy water salt co-production compressed air supercharging system of claim 1 or 2, characterized in that: the high-pressure tank group (2) comprises a plurality of high-pressure tanks, and the adjacent high-pressure tanks are connected with each other.
4. The RO-spray coupled low energy water salt co-production compressed air supercharging system of claim 1, wherein: the high-pressure tank group (2) is also connected with a seawater tank (6).
5. The RO-spray coupled low energy water salt co-production compressed air supercharging system of claim 1, wherein: the air compression energy storage system (1) comprises an air compressor unit (1.1) and an air storage tank (1.2).
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