CN102205993A - Adverse current closed type multistage seawater desalination system and method - Google Patents
Adverse current closed type multistage seawater desalination system and method Download PDFInfo
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- CN102205993A CN102205993A CN201110066208XA CN201110066208A CN102205993A CN 102205993 A CN102205993 A CN 102205993A CN 201110066208X A CN201110066208X A CN 201110066208XA CN 201110066208 A CN201110066208 A CN 201110066208A CN 102205993 A CN102205993 A CN 102205993A
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- 239000013535 sea water Substances 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000002411 adverse Effects 0.000 title claims abstract description 21
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000013505 freshwater Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000001704 evaporation Methods 0.000 claims abstract description 5
- 239000006200 vaporizer Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 9
- 238000011033 desalting Methods 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 230000004087 circulation Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001839 systemic circulation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to an adverse current closed type multistage seawater desalination system and a method, the adverse current closed type multistage seawater desalination system comprises a multistage heat exchanger containing heat exchange tubes in series step by step. An inlet of a heat exchange tube of a first stage heat exchanger is connected with an inlet pipe through a sea water pump, a heat exchange tube of a last stage heat exchanger is connected with a seawater heating device; the seawater heating device is connected with several spray head arranged at the top in a spray tower through pipelines, a communicated multistage spray tower is formed by multistage filling materials in the spray tower, evaporation space of each stage filling material is respectively connected with the corresponding top of heat exchanger though the other end of a vapor pipe, the bottom of each stage heat exchanger is respectively connected in parallel with a fresh water collecting pipe through a pipeline, a breather pipe is inserted at the bottom of each stage heat exchanger, the breather pipe at the bottom of the next stage heat exchanger is respectively communicated with the top of the cylindrical shell of the preceding stage heat exchanger, the breather pipe at the bottom of the first stage heat exchanger is connected with the lower part of the last stage spray tower through a steam return, the bottom of the last stage heat exchanger is connected with a discharge pipe of sprayed sea water. According to the invention, the water volume and the efficiency of producing water can be effectively enhanced.
Description
Technical field
The present invention relates to a kind of seawater desalination system and method, particularly about a kind of adverse current enclosed seawater desalination system and method.
Background technology
The main method of sea water desaltination at present comprises thermal separation method, embrane method and chemical process etc., and wherein thermal separation method is had relatively high expectations to temperature; Embrane method is to make water molecules obtain fresh water by semi-permeable membranes by pressurization, and this method is had relatively high expectations to pressure; Chemical process then is to utilize ion-exchange or form modes such as hydrate to isolate fresh water in the seawater, but power consumption is higher.Equally, utilizing the condensation process of the caloic exchange process of air and seawater and wet air to separate out fresh water also is a kind of method that desalinizes seawater.In the method, on the one hand, air and water (or salts solution) are when directly contacting, because the temperature difference can cause the transmission of heat, because the difference of steam partial pressure can cause the transmission of moisture, all reach balance until temperature and water vapour.On the other hand, when continuing by cooling after air cooling-down reaches capacity state, airborne water vapour will undergo phase transition, and steam coagulation becomes liquid water and separates out.Owing to there is the transmitting characteristic of above-mentioned two aspects between air and the water (or salts solution), just can utilize air to realize " carrying " of moisture---utilize air to take away moisture, utilize the steam coagulation in the wet air to obtain moisture again with direct contact of water (or salts solution).Because seawater can be regarded as the salts solution with low concentration, direct contact and the moisture in the seawater " carrying " is come out in the condensation of wet air that also just can utilize air and seawater promptly can be realized the desalination of seawater.
The device that utilizes air " carrying " moisture to carry out sea water desaltination has occurred, such as: the patent No. is that the Chinese patent of ZL94216279.X discloses a kind of low temperature seawater desalting equipment, it is to utilize heated air and contact with sea water to make water in air divide content to increase, and again the air setting behind the humidification is obtained fresh water.This device is to air heating rather than to the seawater heating, and the caloic exchange process that air and seawater are directly contacted is restricted, and can not reach optimum caloic exchange effect.The patent No. is that the Chinese patent of ZL200610111779.X discloses a kind of temperature-differential sea-water distillator, and it is the device that the different designs according to saturated steam partial pressure in the air under the differing temps goes out to utilize air to obtain moisture and separate out pure water at low temperatures under hot environment from seawater.The limitation of this device is that the spray chamber contact area that air and seawater directly contact is limited, and the caloic exchange process of air and seawater can't fully carry out.The patent No. is that the Chinese patent of ZL200310107193.2 discloses a kind of spray exchange type seawater desalination machine, it is to utilize heat pump condenser to add hot sea water, air increases by contact the back moisture content with high temperature seawater, and wet air is separated out fresh water with the evaporator with heat pump side contacts again.The limitation of this device is that air is open cycle, and the low temperature saturated air of separating out behind the moisture is not utilized.The patent No. is that the Chinese patent of ZL200620078403.9 discloses a kind of enclosed sun power or low-temperature heat source sea water desalinating plant (as shown in Figure 4), seawater after air heats with process carries out the caloic exchange in spray equipment, separated out fresh water by the air admission condensing works behind the humidification, air is a closed cycle.Contact form in this device in air and the high temperature seawater spray process is the distributary flow pattern, has limited the effect of air and seawater caloic exchange.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of fresh water organic efficiency height, can realize the adverse current enclosed seawater desalination system and the method for the coupling of exchange of air and seawater caloic and heat transfer process largely.
For achieving the above object, the present invention takes following technical scheme: a kind of adverse current enclosed seawater desalination system, it is characterized in that: it comprises the placed in-line step by step multi-stage heat exchanger of heat transfer tube, the import of the described heat exchanger heat-exchanging tube of the first step connects the seawater water inlet pipe by a sea-water pump, and the described heat exchanger heat-exchanging tube of last step connects a seawater heating unit; Described seawater heating unit connects some spray headers that a spray column inner top is provided with by pipeline, be provided with the multistage filler in the described spray column and form the multi-stage spray tower that is communicated with, the evaporating space of the described filler of each section top connects a vapour pipe respectively, and the other end of each described vapour pipe connects the cylindrical shell top of a corresponding described interchanger respectively; The cylindrical shell of the described interchanger of each grade bottom is respectively by the pipeline fresh water collection tube that is connected in parallel, the cylindrical shell bottom of the described interchanger of each grade also wears a ventpipe respectively, the inlet end of the described ventpipe of each grade all is higher than this grade cylindrical shell bottom, and the described ventpipe of the described interchanger of back one-level bottom is communicated with the cylindrical shell top of the described interchanger of upper level respectively, the ventpipe of first step interchanger bottom connects last step spray column bottom by a muffler, and the bottom of described last step spray column connects a sprayed sea water vent pipe.
Between described sprayed sea water vent pipe and seawater water inlet pipe, a variable valve is set.
Described seawater heating unit is a solar energy heat collector.
Described seawater heating unit is a heat pump circulating system.
The condenser of described heat pump circulating system is arranged on the pipeline between described heat exchanger heat-exchanging tube water outlet of described last step and the first step spray column water-in, the vaporizer of described heat pump circulating system, be arranged on by a throttling valve on the vent pipe of described sprayed sea water, described vaporizer to the pipeline between the condenser is provided with a compressor, and described condenser to the pipeline between the vaporizer is provided with an expansion valve.
The condenser of described heat pump circulating system is arranged on the pipeline between described heat exchanger heat-exchanging tube water outlet of described last step and the first step spray column water-in, the vaporizer of described heat pump circulating system is arranged on the described muffler, and described base of evaporator connects described fresh water collection tube by a pipeline; Described vaporizer to the pipeline between the condenser is provided with a compressor, and described condenser to the pipeline between the vaporizer is provided with an expansion valve.
A kind of adverse current enclosed method for desalting seawater that adopts said apparatus, it is characterized in that: multistage seawater and air are set directly contact the interchanger that the spray column that carries out the caloic exchange and multistage seawater and air directly do not contact, high temperature seawater and Cryogenic air adverse current in spray column is carried out heat and mass transfer, air is through caloic exchange temperature, after water capacity all raises, enter again in the interchanger and carry out countercurrent flow with seawater, the part steam coagulation is separated out in the air, obtain fresh water, air after the heat exchange reenters spray column, finish the closed cycle process of air, behind the seawater outflow heat exchanger, entered the spray column spray after the heating unit heating again.
From the effusive seawater part of described spray column inflow heat exchanger again, continue to participate in the circulation desalination process of seawater.
Utilize sun power as the seawater heating unit.
Utilize the condenser of heat pump circulating system to add hot sea water, the evaporator cools of utilizing heat pump circulating system is from the effusive seawater of spray column, or from the effusive low temperature saturated air of interchanger.
The present invention is owing to take above technical scheme, it has the following advantages: 1, because air of the present invention and seawater all adopt reflux type to carry out caloic exchange and heat exchange in spray column and interchanger, air adopts the closed cycle process in system simultaneously, therefore can realize more excellent heat, mass transfer effect.2, because the present invention is provided with multi-stage spray tower and interchanger dexterously in working cycle, realize thermal capacity coupling between wet air and the seawater as far as possible by changing air flow quantity in interchanger not at the same level or the spray column, such as: when the wet air temperature in certain grade of spray column or the interchanger is higher, its equivalent specific heat capacity is bigger, and the flow of air can be corresponding less; When the wet air temperature in certain grade of spray column or the interchanger was low, its equivalent specific heat capacity was less, and the flow of air can be corresponding bigger.3, because of the present invention this multistage and change the air-seawater spraying tower of air flow quantity and the setting of interchanger step by step, can realize the thermal capacity coupling of air and seawater caloic exchange process and heat transfer process as far as possible, therefore the present invention has reached more excellent heat and mass effect, has improved the water production rate of sea water desaltination effectively and has produced water efficient.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1
Fig. 2 is the structural representation of the embodiment of the invention 2
Fig. 3 is the structural representation of the embodiment of the invention 3
Fig. 4 is the prior art structural representation
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
Principle of design of the present invention is embodied in: at first be provided with multistage independently air-seawater spraying tower (hereinafter to be referred as spray column) and multi-staged air-seawater heat exchanger (hereinafter to be referred as interchanger), utilize seawater and air adverse current caloic exchange process in spray column and the countercurrent flow process in interchanger to prepare fresh water.Next consider if seawater from spray column when ejection inlet temperature higher (as 80 ℃), temperature lower (as 20 ℃) during to heat exchanger entrance, promptly water temperature changes greatly, the range of temperature of air is also bigger so; And when air temperature variations was big, it is little that the specific heat capacity of seawater changes, and the equivalent specific heat capacity of damp-heat air can have greatly changed, and the equivalent specific heat capacity of damp-heat air was bigger when temperature was high, and the equivalent specific heat capacity of damp-heat air was less when temperature was low; The present invention utilizes in the working cycle seawater flow in the spray column and interchanger constant substantially, and in the spray column not at the same level principle different with air flow quantity in the interchanger, realize air and seawater thermal capacity coupling as much as possible at caloic exchange process and heat transfer process, exchange or the heat exchange effect to obtain better air and seawater caloic, and then improve the efficient of sea water desaltination.Be that example is illustrated only below, and in the multistage seawater desalination system of reality, the progression of interchanger and spray column can change to some extent with the system that is provided with three grades of interchanger and three grades of spray columns.
Embodiment 1:
As shown in Figure 1, present embodiment comprises first step interchanger 1, second stage interchanger 2 and third stage interchanger 3, and first step spray column 4, second stage spray column 5 and third stage spray column 6.The heat transfer tube series connection of three grades of interchanger 1,2,3, the heat transfer tube inlet of first step interchanger 1 connects a seawater water inlet pipe 7, and seawater water inlet pipe 7 is provided with a sea-water pump 8; The heat transfer tube outlet of third stage interchanger 3 connects a solar energy heat collector 9 by pipeline, some spray headers 10 that the outlet of solar energy heat collector 9 is provided with by pipeline connection first step spray column 4 inner tops.Three grades of spray columns 4,5,6 are communicated with, and are provided with 11, three sections filler 11 tops of one section filler in each grade spray column and leave evaporating space respectively, and each evaporating space connects a vapour pipe 12.The other end of three vapour pipes 12 of three grades of spray columns 4,5,6 connects the cylindrical shell top with the interchanger 3,2,1 of its respective row column position respectively.By the pipeline fresh water collection tube 13 that is connected in parallel, fresh water collection tube 13 connects fresh water collection container (not shown)s respectively in the cylindrical shell of three grades of interchanger 1,2,3 bottom.The cylindrical shell bottom of three grades of interchanger 1,2,3 is equipped with a ventpipe respectively, and the inlet end of each ventpipe protrudes from this grade cylindrical shell bottom certain altitude respectively, so that only there is gas to enter, desalination water can not enter.Three, the ventpipe of second stage interchanger 3,2 bottoms is communicated with the cylindrical shell top of next stage interchanger 2,1 respectively, the ventpipe of first step interchanger 1 bottom connects third stage spray column 6 bottoms by a muffler 14, and the bottom of third stage spray column 6 connects a sprayed sea water vent pipe 15.
In the foregoing description, because entering seawater in the system of the present invention need carry out some and handle in earlier stage, the cost of handling in order to save early stage, the seawater that a part can be flowed out sprayed sea water vent pipe 15 sends back to the working cycle that continues to participate in the desalination extraction in the seawater water inlet pipe 7 again by a variable valve 16, and the seawater amount that specifically enters systemic circulation can be regulated as required.In addition, filler of the present invention is selected common regular type filler for use, and filler can effectively be increased the heat and mass area of low temperature saturated air and high temperature seawater by wetting from the high temperature seawater of spray header 10 ejections.
During present embodiment work, enter the low temperature seawater of seawater water inlet pipe 7 by sea-water pump 8, the heat transfer tube of the three grades of interchanger 1,2,3 through being connected in series upwards flows into solar energy heat collector 9, carries out countercurrent flow with the damp-heat air that enters downward motion in interchanger 1,2,3 cylindrical shells at different levels simultaneously; The seawater that enters solar energy heat collector 9 is heated as high temperature seawater, each spray header 10 that is provided with by first step spray column 4 inner tops sprays, successively through three grades of spray columns 4,5,6, flow out from the spray sea vent pipe 15 of third stage spray column 6 bottoms, high temperature seawater carries out the exchange of countercurrent heat-transfer mass transfer with the mobile low temperature saturated air that makes progress from three grades of spray columns, 6,5,4 bottoms simultaneously; Heat steam enters by each vapour pipe 12 in the cylindrical shell of corresponding interchanger 3,2,1, and condenses into fresh water behind the seawater to make heat exchange in the heat transfer tube, enters fresh water collection tube 13 backs by loop and flows in the fresh water collection containers.Three, the steam that does not condense into water in the secondary heat exchanger 3,2 then enters next collecting exchanger 2,1 successively by ventpipe, get back to the third stage spray column 6 from the bottom inflow muffler 14 of first step interchanger 1 at last, continue in system, to carry out closed circulation.Part from sprayed sea water vent pipe 15 effusive sprayed sea water can be got back to seawater water inlet pipe 7 by variable valve 16 and be continued to circulate in system.
Embodiment 2:
As shown in Figure 2, present embodiment is identical with the basic setup of embodiment 1, and its difference is: seawater heating unit difference, it is provided with the conventional heat pump circulating system 20 of a cover to replace solar heating system 9.This heat pump circulating system 20 comprises: be arranged on third stage interchanger 3 heat transfer tube water outlets, and first step spray column 4 water-ins between a condenser 21 on the pipeline, be arranged on the vaporizer 22 on the sprayed sea water vent pipe 15, vaporizer 21 is provided with a compressor 22 to the pipeline between the condenser 23, and condenser 21 to the pipeline between the vaporizer 22 is provided with an expansion valve 24.
During present embodiment work, two countercurrent flow processes are identical with embodiment 1, its difference is: from the effusive seawater of third stage interchanger 3 heat transfer tube water outlets is to enter condenser 21, heat by the refrigeration working medium heat release in the condenser 21, enter the spray header 10 of first step spray thrower 4 then; Simultaneously, directly discharge via pipeline by a throttling valve (not shown) part from third stage spray thrower 6 effusive spray waters, another part seawater then flows through vaporizer 22, after cooling off by the heat absorption of the refrigeration working mediums in the vaporizer 22, enter seawater water inlet pipe 7 again by sprayed sea water vent pipe 15, variable valve 16 and participate in systemic circulation.
Embodiment 3:
As shown in Figure 3, present embodiment is substantially the same manner as Example 2, also be provided with the conventional heat pump circulating system 20 of a cover, its difference from Example 2 is: vaporizer 22 is not arranged on the sprayed sea water vent pipe 15, and be arranged on the muffler 14 between first step interchanger 1 bottom and third stage spray column 6 bottoms, and be connected in parallel to fresh water collection tube 13 by pipeline in vaporizer 22 bottoms.
In present embodiment when work,, what only be that vaporizer 22 absorbs with embodiment 2 different is heat the low temperature damp-heat air in first step interchanger 1 enters third stage spray column 6.
By above-mentioned three embodiment as can be seen: embodiment 1 utilizes sun power as the seawater heating unit, and it relatively is suitable for the well-off occasion of sun power.Embodiment 2,3 utilizes condenser in the conventional heat pump circulating system as the seawater heating unit; it is sufficient inadequately that it relatively is suitable for the sun power supply; and the utilizable occasion of industrial exhaust heat is arranged; thereby for enforcement of the present invention provides multiple possible mode; certainly the present invention does not get rid of other mode that can implement in addition, and the proposition of these modes should not got rid of outside protection scope of the present invention.
The various embodiments described above only are used to illustrate the present invention, and wherein the structure of each parts, mode of connection etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. adverse current enclosed seawater desalination system, it is characterized in that: it comprises the placed in-line step by step multi-stage heat exchanger of heat transfer tube, the import of the described heat exchanger heat-exchanging tube of the first step connects the seawater water inlet pipe by a sea-water pump, and the described heat exchanger heat-exchanging tube of last step connects a seawater heating unit; Described seawater heating unit connects some spray headers that a spray column inner top is provided with by pipeline, be provided with the multistage filler in the described spray column and form the multi-stage spray tower that is communicated with, the evaporating space of the described filler of each section top connects a vapour pipe respectively, and the other end of each described vapour pipe connects the cylindrical shell top of a corresponding described interchanger respectively; The cylindrical shell of the described interchanger of each grade bottom is respectively by the pipeline fresh water collection tube that is connected in parallel, the cylindrical shell bottom of the described interchanger of each grade also wears a ventpipe respectively, the inlet end of the described ventpipe of each grade all is higher than this grade cylindrical shell bottom, and the described ventpipe of the described interchanger of back one-level bottom is communicated with the cylindrical shell top of the described interchanger of upper level respectively, the ventpipe of first step interchanger bottom connects last step spray column bottom by a muffler, and the bottom of described last step spray column connects a sprayed sea water vent pipe.
2. a kind of adverse current enclosed seawater desalination system as claimed in claim 1 is characterized in that: between described sprayed sea water vent pipe and seawater water inlet pipe a variable valve is set.
3. a kind of adverse current enclosed seawater desalination system as claimed in claim 1 or 2, it is characterized in that: described seawater heating unit is a solar energy heat collector.
4. a kind of adverse current enclosed seawater desalination system as claimed in claim 1 or 2, it is characterized in that: described seawater heating unit is a heat pump circulating system.
5. a kind of adverse current enclosed seawater desalination system as claimed in claim 4, it is characterized in that: the condenser of described heat pump circulating system is arranged on the pipeline between described heat exchanger heat-exchanging tube water outlet of described last step and the first step spray column water-in, the vaporizer of described heat pump circulating system, be arranged on by a throttling valve on the vent pipe of described sprayed sea water, described vaporizer to the pipeline between the condenser is provided with a compressor, and described condenser to the pipeline between the vaporizer is provided with an expansion valve.
6. a kind of adverse current enclosed seawater desalination system as claimed in claim 4, it is characterized in that: the condenser of described heat pump circulating system is arranged on the pipeline between described heat exchanger heat-exchanging tube water outlet of described last step and the first step spray column water-in, the vaporizer of described heat pump circulating system is arranged on the described muffler, and described base of evaporator connects described fresh water collection tube by a pipeline; Described vaporizer to the pipeline between the condenser is provided with a compressor, and described condenser to the pipeline between the vaporizer is provided with an expansion valve.
7. adopt a kind of adverse current enclosed method for desalting seawater as any device as described in the claim 1～6, it is characterized in that: multistage seawater and air are set directly contact the interchanger that the spray column that carries out the caloic exchange and multistage seawater and air directly do not contact, high temperature seawater and Cryogenic air adverse current in spray column is carried out heat and mass transfer, air is through caloic exchange temperature, after water capacity all raises, enter again in the interchanger and carry out countercurrent flow with seawater, the part steam coagulation is separated out in the air, obtain fresh water, air after the heat exchange reenters spray column, finish the closed cycle process of air, behind the seawater outflow heat exchanger, entered the spray column spray after the heating unit heating again.
8. a kind of adverse current enclosed method for desalting seawater as claimed in claim 7 is characterized in that: from the effusive seawater part of described spray column inflow heat exchanger again, continue to participate in the circulation desalination process of seawater.
9. as claim 7 or the multistage method for desalting seawater of 8 described a kind of adverse current encloseds, it is characterized in that: utilize sun power as the seawater heating unit.
10. as claim 7 or the multistage method for desalting seawater of 8 described a kind of adverse current encloseds, it is characterized in that: utilize the condenser of heat pump circulating system to add hot sea water, the evaporator cools of utilizing heat pump circulating system is from the effusive seawater of spray column, or from the effusive low temperature saturated air of interchanger.
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| CN201110066208XA CN102205993B (en) | 2011-03-18 | 2011-03-18 | Adverse current closed type multistage seawater desalination system and method |
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| CN201110066208XA CN102205993B (en) | 2011-03-18 | 2011-03-18 | Adverse current closed type multistage seawater desalination system and method |
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| CN108178218A (en) * | 2018-03-21 | 2018-06-19 | 张建东 | A kind of Waste water concentrating liquid stream crystallizing and drying system and method for air direct emission |
| CN108249497A (en) * | 2018-03-21 | 2018-07-06 | 张建东 | A kind of waste water airdistillation thickening-purification technology System and method for |
| CN108298625A (en) * | 2018-03-21 | 2018-07-20 | 张建东 | A kind of Waste water concentrating liquid stream crystallizing and drying system and method for flue gas direct emission |
| CN108640187A (en) * | 2018-03-21 | 2018-10-12 | 国电科学技术研究院有限公司 | A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line and method |
| CN108751311A (en) * | 2018-07-18 | 2018-11-06 | 中国海洋大学 | A kind of evaporation-type seawater desalination system and method using engine of boat and ship waste heat |
| CN110451711A (en) * | 2019-08-13 | 2019-11-15 | 武汉宏澳绿色能源工程有限责任公司 | A kind of system and method for realizing high-salt wastewater condensing crystallizing using air air lift |
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| CN113149112A (en) * | 2021-04-25 | 2021-07-23 | 清华大学 | Method for realizing hydrothermal coproduction by vertical multistage flash evaporation |
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| CN105621514A (en) * | 2016-03-18 | 2016-06-01 | 常州大学 | Salt-containing wastewater concentration treatment device with air as medium |
| CN108178218A (en) * | 2018-03-21 | 2018-06-19 | 张建东 | A kind of Waste water concentrating liquid stream crystallizing and drying system and method for air direct emission |
| CN108249497A (en) * | 2018-03-21 | 2018-07-06 | 张建东 | A kind of waste water airdistillation thickening-purification technology System and method for |
| CN108298625A (en) * | 2018-03-21 | 2018-07-20 | 张建东 | A kind of Waste water concentrating liquid stream crystallizing and drying system and method for flue gas direct emission |
| CN108640187A (en) * | 2018-03-21 | 2018-10-12 | 国电科学技术研究院有限公司 | A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line and method |
| CN108178218B (en) * | 2018-03-21 | 2023-06-30 | 张建东 | System and method for crystallizing and drying wastewater concentrate by directly discharging air |
| CN108751311A (en) * | 2018-07-18 | 2018-11-06 | 中国海洋大学 | A kind of evaporation-type seawater desalination system and method using engine of boat and ship waste heat |
| CN110451711A (en) * | 2019-08-13 | 2019-11-15 | 武汉宏澳绿色能源工程有限责任公司 | A kind of system and method for realizing high-salt wastewater condensing crystallizing using air air lift |
| CN110642444A (en) * | 2019-10-28 | 2020-01-03 | 中国华电科工集团有限公司 | Vacuum phase-change wastewater concentration and flue gas waste heat recovery system |
| CN112062374A (en) * | 2020-06-05 | 2020-12-11 | 北京清建能源技术有限公司 | Multi-effect distillation and reverse osmosis hot purified water preparation device, system and method |
| CN113149112A (en) * | 2021-04-25 | 2021-07-23 | 清华大学 | Method for realizing hydrothermal coproduction by vertical multistage flash evaporation |
| CN113856219A (en) * | 2021-10-20 | 2021-12-31 | 江苏盛勤环境工程有限公司 | Low-temperature normal-pressure evaporation device and evaporation process thereof |
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