CN102225787B - Composite solar seawater desalination device and method - Google Patents
Composite solar seawater desalination device and method Download PDFInfo
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- CN102225787B CN102225787B CN201110127563A CN201110127563A CN102225787B CN 102225787 B CN102225787 B CN 102225787B CN 201110127563 A CN201110127563 A CN 201110127563A CN 201110127563 A CN201110127563 A CN 201110127563A CN 102225787 B CN102225787 B CN 102225787B
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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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Abstract
The invention discloses a composite solar seawater desalination device and method. The device body is composed of a water storage tank, a solar flat-plate heat collector, a liquid distribution tank, a condensation evaporation tube, a guiding plate, a heating side, a compound parabolic concentrating heat collector, a normal-temperature evaporator, a fresh water tank and a heat storage water tank. According to the invention, in the process of seawater desalination, the flat-plate heat collector and the compound parabolic concentrating heat collector are used for absorbing solar energy to perform falling film and thin film evaporation of seawater, and finally steam is collected condensed to obtain fresh water. latent heat emitted during the steam condensation process is used for generating indirect steam or increasing seawater temperature, so as to achieve multi-effect utilization of solar energy. The invention has the advantages of no need for auxiliary electrical equipment, quick start-up and high water production rate, and is especially suitable for islands, ships and remote areas.
Description
Technical field
The present invention relates to a kind of combined solar energy sea water distiling plant and method, belong to the technical field of solar seawater desalination.
Background technology
The ocean covers 71% of earth surface-area, and the seawater reserves are about 13.7 hundred million cubes of kms, account for 95% of global Total Water; Land fresh water reserves are about 0.35 hundred million cube of km, account for 2.53% of global water reserves, wherein can supply the human fresh water that directly utilizes only to account for 0.266% of fresh water reserves, 7/100000ths of the total moisture storage capacity of the not enough earth.China's seashore line length, all there are serious shortage of fresh water problem in a lot of island, coastal and landlocked brackish water area.Therefore, the development desalination technology to alleviate current shortage of fresh water, the imbalance between supply and demand distinct issues have far-reaching strategic importance.
Sea water desaltination is exactly that the salinity in the seawater (or brackish water) is separated with moisture, finally obtains fresh water and concentrated brinish process.The most frequently used technology of seawater (or brackish water) desalination mainly contains multiple-effect distillation, MSF method, reverse osmosis method, extraction process and electroosmose process.
Multiple-effect distillation is seawater to be added thermal distillation produce steam, and steam produces fresh water and emits latent heat in the process of condensation, and fresh water flows into fresh-water pool, and latent heat is used for heating next seawater of imitating and produces steam, carries out the multiple-effect utilization according to this, reduces heat energy consumption.This process also needs certain driven by power water pump of additive decrementation and blower fan except consuming heat energy.
The MSF method is that the seawater that is heated to certain temperature is introduced the flashing chamber that several pressure reduce gradually successively, because the pressure of flashing chamber is lower than the corresponding saturated vapour pressure of seawater temperature, seawater is vaporized rapidly after getting into flashing chamber step by step; Salt concentration increases step by step, and temperature reduces step by step, because heat is from the decline of salt water self-temperature; There is not special hot face; Avoided inorganic salt to separate out fouling,, obtained fresh water behind the vapor condensations at different levels until discharge.This process also need consume a large amount of driven by power vacuum pumps and water pump except consuming heat energy.
Reverse osmosis method is to utilize reverse osmosis membrane that seawater and fresh water are separated, and applies enough big pressure (surpassing penetration of sea water presses) in the seawater side, and dilute side is arrived in the water molecules r-o-in the seawater.This method does not consume heat energy, produces enough big external pressure but need to consume a large amount of electric power, and is very high to the requirement of reverse osmosis membrane in addition yet.
Electroosmose process is a power with the potential difference, utilizes the selective permeation of ion-exchange membrane and removes the desalination process of water intermediate ion.Electrodeionization combines dialysis with IX, in the freshwater room of electrodialyzer, fill ionite, under the effect of DC electric field, realizes electrodialysis, ion-exchange demineralization and IX continuous electric regenerated process.Electrodeionization is not used in brackish water desalination, is mainly used in the production high purity water.This method does not consume heat energy, but needs to introduce electric power.
Cold method is that seawater is freezing to below freezing, and fresh water freezes, separates, melts is the process of fresh water.Cold method is utilized natural ice method and artificial cold method.But technology is still immature.
Traditional desalination technology investment is high, and energy expenditure is big, according to statistics, produces the device of 1,300 ten thousand tons of desalination waters every day, needs to consume 1.3 hundred million tons of crude oil every year.Remove outside the expense of this fuel, problems such as the Greenhouse effect that bring thus, atmospheric pollution also can not be ignored.With regard to China, regional electric power famines such as northwest remote village, desert, isolated island can not be set up traditional seawater (or brackish water) desalting equipment.Solar seawater desalination fresh water technology is the effective way that solves these regional shortage of fresh water problems, has a extensive future.
Present desalination with Solar Energy is integrated in one solar energy heating and sea water by distillation desalination usually, and running maintenance is simple; But the plant area area is big; Start slowly, the unit surface water production rate is low, receives area and weather influence very big; Average daily output fresh water amount is lower, has seriously restricted its The Application of Technology and popularization.
Summary of the invention
The object of the invention is to overcome the deficiency of existing desalination with Solar Energy, the combined solar energy sea water distiling plant and the method that provide a kind of and need not auxiliary electrical equipment, start rapidly, producing water ratio are high.
The combined solar energy sea water distiling plant comprises water escape valve, heat storage water tank, steam distribution case, condensation evaporation pipe, cloth liquid case, plate solar collector, first water drain valve, second water drain valve, water tank, constant-temperature evaporation device, the first fresh water valve, water intaking valve, fresh-water tank, the second fresh water valve, water discharge valve, compound parabolic concentrator collector, director; The constant-temperature evaporation device comprises fresh water receiving tank, hydrophilic fibers, and fresh-water tank comprises vapour stream through hole, condensation transverse slat, second ventilating pit, the perpendicular wall of condensation, and the steam distribution case comprises flow deflector, first ventilating pit, hot face; Water tank, first water drain valve, flat plate collector, cloth liquid case link to each other in order, and water tank links to each other with the external world through second water drain valve, and cloth liquid case bottom is provided with liquid distributing hole; Cloth liquid case below is provided with the condensation evaporation pipe, and condensation evaporation pipe lateral arrangement has obliquity; The condensation evaporation pipe is high-end to link to each other with the steam distribution case, and condensation evaporation pipe low side links to each other with fresh-water tank, and the steam distribution case links to each other with heat storage water tank through director; The hot face below is provided with compound parabolic concentrator collector; Be perpendicular wall of condensation and condensation transverse slat between fresh-water tank and the constant-temperature evaporation device, constant-temperature evaporation device bottom is provided with water discharge valve, and constant-temperature evaporation device middle and upper part is provided with water intaking valve; Constant-temperature evaporation device end face low side is provided with the first fresh water valve; The constant-temperature evaporation device links to each other with the external world through the first fresh water valve, water intaking valve, water discharge valve respectively, and fresh-water tank links to each other with the external world through the second fresh water valve of bottom, and heat storage water tank links to each other with the external world through the water escape valve of bottom.
Described flow deflector, hot face angle of inclination are 5-30 °.Described hot face downside scribbles coating for selective absorption.Described condensation evaporation pipe angle of inclination is 5-30 °, and plurality of rows is arranged, some row, and in-line arrangement is arranged.Described condensation is erected on wall, the condensation transverse slat and is furnished with hydrophilic fibers.Slit between described flow deflector and the fresh-water tank is 0.5-5mm.
The combined solar energy method for desalting seawater is: adopting plate solar collector to absorb sun power, be used for heating from the flow through seawater of flat plate collector of water tank, is 50-60 ℃ hot sea water with seawater preheating to temperature; Hot sea water gets in the cloth liquid case, and the liquid distributing hole bottom cloth liquid case flows down, and is dropped on the condensation evaporation pipe; The portion of hot seawater forms one deck seawater film on the condensation evaporation pipe, the residual heat seawater separates with the condensation evaporation pipe under action of gravity, drops onto on the flow deflector; Import on the hot face through flow deflector, flow deflector and hot face have obliquity, on flow deflector and hot face, all form one deck seawater film; The hot face downside scribbles coating for selective absorption, absorbs compound parabolic concentrator collector accumulative sunshine and converts heat to, the seawater film on the heating hot face; The seawater film absorbs heat and evaporates rapidly, and unevaporated seawater flows in the heat storage water tank, and the steam of generation gets into the condensation evaporation pipe through the steam distribution case; Steam condenses into fresh water and gets into fresh-water tank in the condensation evaporation pipe, and is drawn by the second fresh water valve, and the latent heat of condensation that discharges during vapor condensation in the condensation evaporation pipe outer seawater film of generating tube that is condensed absorbs; Impel the evaporation of seawater membrane portions, produce secondary steam, secondary steam gets into fresh-water tank through the vapour stream through hole; On condensation transverse slat between fresh-water tank and the constant-temperature evaporation device and the perpendicular wall of condensation, condense into fresh water; The latent heat of condensation is imported in the constant-temperature evaporation device through the perpendicular wall of condensation, condensation transverse slat, on perpendicular wall of condensation and condensation transverse slat, is provided with hydrophilic fibers, under the effect of hydrophilic fibers; The seawater of constant-temperature evaporation device bottom all forms one deck seawater film on perpendicular wall of condensation and condensation transverse slat; The latent heat of condensation of emitting when the seawater film absorbs from the secondary steam condensation is evaporated rapidly, produces three times steam, and three times steam condenses into fresh water entering fresh water receiving tank at the end face of constant-temperature evaporation device; And draw by the first fresh water valve, the hot sea water in the heat storage water tank is every to be transferred in the water tank at a distance from 2-5 hour.
Compared with prior art, the present invention has the following advantages:
1, the present invention does not introduce conventional energy resourcess such as electric power fully, is particularly suitable for remote districts, and electric power such as desert, island lack the area.
2, the evaporation that the present invention relates to all is a thin film evaporation, and film thermal capacity is little, and required heat source temperature is low, and velocity of evaporation is fast, and water production rate is high.
3, the speed of evaporation and condensation has been accelerated in evaporation and be condensate in the different spaces and carry out among the present invention, and mostly the heat transfer that relates to is phase-change heat transfer, and required heat interchanging area is little, the device compactness.
4, the present invention utilizes the latent heat of vapor condenses to remove to impel liquid film evaporation according to the difference of vapor temperature, not only makes heat-transfer effect better, has increased rate of setting, can also improve producing water ratio, the step of having realized energy with recycle.
5, the present invention is simple in structure, and seal request is not high, installs, unpicks and washes, changes conveniently.
Description of drawings
Fig. 1 is the structural representation of combined solar energy sea water distiling plant;
Fig. 2 is the left pseudosection of constant-temperature evaporation device of the present invention;
Fig. 3 is the left pseudosection of fresh-water tank of the present invention;
Fig. 4 is the right pseudosection of steam distribution case of the present invention
Fig. 5 is a steam distribution case of the present invention left side pseudosection;
Fig. 6 is a director structural representation of the present invention;
Among the figure: water escape valve 1; Heat storage water tank 2; Flow deflector 3; Steam distribution case 4; Condensation evaporation pipe 5; First ventilating pit 6; Cloth liquid case 7; Plate solar collector 8; First water drain valve 9; Second water drain valve 10; Water tank 11; Vapour stream through hole 12; Condensation transverse slat 13; Second ventilating pit 14; Constant-temperature evaporation device 15; Wall 16 is erected in condensation; Fresh water receiving tank 17; The first fresh water valve 18; Hydrophilic fibers 19; Water intaking valve 20; Fresh-water tank 21; Hot face 22; The second fresh water valve 23; Water discharge valve 24; Compound parabolic concentrator collector 25; Director 26.
Embodiment
As shown in Figure 1, the combined solar energy sea water distiling plant comprises water escape valve 1, heat storage water tank 2, steam distribution case 4, condensation evaporation pipe 5, cloth liquid case 7, plate solar collector 8, first water drain valve 9, second water drain valve 10, water tank 11, constant-temperature evaporation device 15, the first fresh water valve 18, water intaking valve 20, fresh-water tank 21, the second fresh water valve 23, water discharge valve 24, compound parabolic concentrator collector 25, director 26; Constant-temperature evaporation device 15 comprises fresh water receiving tank 17, hydrophilic fibers 19, and fresh-water tank 21 comprises vapour stream through hole 12, condensation transverse slat 13, second ventilating pit 14, the perpendicular wall 16 of condensation, and steam distribution case 4 comprises flow deflector 3, first ventilating pit 6, hot face 22; Water tank 11, first water drain valve 9, flat plate collector 8, cloth liquid case 7 link to each other in order, and water tank 11 links to each other with the external world through second water drain valve 10, and cloth liquid case 7 bottoms are provided with liquid distributing hole; Cloth liquid case 7 belows are provided with condensation evaporation pipe 5, and condensation evaporation pipe 5 lateral arrangement have obliquity; Condensation evaporation pipe 5 is high-end to link to each other with steam distribution case 4, and condensation evaporation pipe 5 low sides link to each other with fresh-water tank 21, and the steam distribution case links to each other with heat storage water tank 2 through director 26; Hot face 22 belows are provided with compound parabolic concentrator collector 25; Be perpendicular wall 16 of condensation and condensation transverse slat 13 between fresh-water tank 21 and the constant-temperature evaporation device 15, constant-temperature evaporation device 15 bottoms are provided with water discharge valve 24, and constant-temperature evaporation device 15 middle and upper parts are provided with water intaking valve 20; Constant-temperature evaporation device 15 end face low sides are provided with the first fresh water valve 18; Constant-temperature evaporation device 15 links to each other with the external world through the first fresh water valve 18, water intaking valve 20, water discharge valve 24 respectively, and fresh-water tank 21 links to each other with the external world through the second fresh water valve 23 of bottom, and heat storage water tank 2 links to each other with the external world through the water escape valve 1 of bottom.
Described flow deflector 3, hot face 22 angles of inclination are 5-30 °.Described hot face 22 downsides scribble coating for selective absorption.Described condensation evaporation pipe 5 angles of inclination are 5-30 °, and plurality of rows is arranged, some row, and in-line arrangement is arranged.Described condensation is erected on wall 16, the condensation transverse slat 13 and is furnished with hydrophilic fibers 19.Slit between described flow deflector 3 and the fresh-water tank 21 is 0.5-5mm.Described first ventilating pit 6, second ventilating pit 14 are furnished with the top cover of favorable sealing property, can free opening and closing.
The combined solar energy method for desalting seawater is: adopting plate solar collector 8 to absorb sun power, be used for heating from the flow through seawater of flat plate collector 8 of water tank 11, is 50-60 ℃ hot sea water with seawater preheating to temperature; Hot sea water gets in the cloth liquid case 7, flows down from the liquid distributing hole of cloth liquid case 7 bottoms, is dropped on the condensation evaporation pipe 5; The portion of hot seawater forms one deck seawater film on condensation evaporation pipe 5, the residual heat seawater separates with condensation evaporation pipe 5 under action of gravity, drops onto on the flow deflector 3; Import on the hot face 22 through flow deflector 3, flow deflector 3 and hot face 22 have obliquity, on flow deflector 3 and hot face 22, all form one deck seawater film; Hot face 22 downsides scribble coating for selective absorption, absorb compound parabolic concentrator collector 25 accumulative sunshines and convert heat to, the seawater film on the heating hot face 22; The seawater film absorbs heat and evaporates rapidly, and unevaporated seawater flows in the heat storage water tank 2, and the steam of generation gets into condensation evaporation pipe 5 through steam distribution case 4; Steam condenses into fresh water and gets into fresh-water tank 21 in condensation evaporation pipe 5; And draw by the second fresh water valve 23, the latent heat of condensation that discharges during vapor condensation in the condensation evaporation pipe 5 generating tube 5 outer seawater films that are condensed absorb, and impel the evaporation of seawater membrane portions; Produce secondary steam; Secondary steam gets into fresh-water tank 21 through vapour stream through hole 12, on the perpendicular wall 16 of condensation transverse slat between fresh-water tank 21 and the constant-temperature evaporation device 15 13 and condensation, condenses into fresh water, and the latent heat of condensation is imported in the constant-temperature evaporation device 15 through the perpendicular wall 16 of condensation, condensation transverse slat 13; On perpendicular wall 16 of condensation and condensation transverse slat 13, be provided with hydrophilic fibers 19; Under the effect of hydrophilic fibers 19, the seawater of constant-temperature evaporation device 15 bottoms all forms one deck seawater film on perpendicular wall 16 of condensation and condensation transverse slat 13, and the latent heat of condensation of emitting when the seawater film absorbs from the secondary steam condensation is evaporated rapidly; Produce three times steam; Three times steam condenses into fresh water entering fresh water receiving tank 17 at the end face of constant-temperature evaporation device 15, and is drawn by the first fresh water valve 18, and the hot sea water in the heat storage water tank 2 is every to be transferred in the water tank 11 at a distance from 2-5 hour.
Working process of the present invention:
At first, water tank is filled it up with normal temperature seawater, replenish normal temperature seawater in the constant-temperature evaporation device; Open the water drain valve that links to each other with flat plate collector, water is imported flat plate collector be heated to and get into cloth liquid case after temperature is 50-60 ℃, flow out from the liquid distributing hole of cloth liquid case bottom; Drop onto on the condensation evaporation pipe, the portion of hot seawater forms uniform thin film, and not film forming hot sea water continues to fall until flow deflector; Guiding through flow deflector flows on the hot face through the narrow slit between flow deflector and the fresh-water tank, forms one deck seawater film, and the heat that the seawater film absorbs hot face evaporates rapidly; Produce primary steam, unevaporated seawater flows in the heat storage water tank through director, and the salt water in the heat storage water tank is every to be transferred in the water tank at a distance from 2-5 hour; The primary steam that produces is flowed through and is got into the condensation evaporation pipe behind the steam distribution case, in condensation evaporation pipe pipe, falling film condensation takes place, and the latent heat of condensation generating tube off-lying sea moisture film that is condensed absorbs; Form falling film evaporation, the fresh water that obtains that in the condensation evaporation pipe, condenses glides until getting into fresh-water tank along pipeline under action of gravity, and the secondary steam of the generation that the condensation evaporation pipe is outer gets into fresh-water tank through the vapour stream through hole; Erect the formation fresh water that condenses on wall and the condensation transverse slat in condensation respectively, latent heat reaches in the constant-temperature evaporation device, and constant-temperature evaporation device maritime interior waters rises under the effect of hydrophilic fibers; On perpendicular wall of condensation and condensation transverse slat, form the seawater film, the latent heat of condensation of seawater film absorption secondary steam is evaporated rapidly, forms three times steam; Steam rises to and is slipped in the fresh water receiving tank after end face condenses into fresh water, draws through the first fresh water valve, and the fresh water temperature is higher than the temperature of constant-temperature evaporation device maritime interior waters in the fresh-water tank; Fresh water is passed to seawater with heat; Improve its temperature, accelerate vaporator rate, the constant-temperature evaporation device is every at a distance from moisturizing in 2-5 hour once.
Embodiment 1:
1 ton of the initial normal temperature seawater capacity of water tank, the total daylighting area 4m of heat collector
2, compound parabolic concentrator collector optically focused ratio is 3, flat plate collector efficient 60%, and the external diameter 25.4mm of condensation evaporation copper pipe, pipe range 200mm manages several 9, is arranged to a row, 15 ° at inclination angle, the perpendicular wall of the fresh-water tank area 200 * 800mm that condenses
2, the transverse slat area 100 * 800mm that condenses
2, material is a stainless steel, wall thickness 2mm; Hydrophilic fibers covers on condensation transverse slat and the perpendicular wall of condensation, and 20 ℃ of seawater temperature ins get into cloth liquid case after plate solar collector is preheated to 50 ℃; 20 ℃ of constant-temperature evaporation device maritime interior waters initial temperatures, initial liquid level 50mm, whenever once at a distance from moisturizing in 5 hours; Hot sea water whenever was transferred in the water tank at a distance from 5 hours in the heat storage water tank, control seawater flow rate 20kg/h, and daily output fresh water amount can reach 15-20kg/m
2.
Embodiment 2:
1 ton of the initial normal temperature seawater capacity of water tank, the total daylighting area 5m of heat collector
2, compound parabolic concentrator collector optically focused ratio is 4, flat plate collector efficient 65%, and condensation evaporation copper pipe external diameter 25.4mm, pipe range 200mm manages several 12, is arranged to a row, 15 ° at inclination angle, the perpendicular wall of the fresh-water tank area 200 * 800mm that condenses
2, the transverse slat area 100 * 800mm that condenses
2, material is a stainless steel, wall thickness 2mm; Hydrophilic fibers covers on condensation transverse slat and the perpendicular wall of condensation, and 20 ℃ of seawater temperature ins get into cloth liquid case after plate solar collector is preheated to 60 ℃; 20 ℃ of constant-temperature evaporation device maritime interior waters initial temperatures, initial liquid level 50mm, whenever once at a distance from moisturizing in 4 hours; The every water tank that was transferred at a distance from 6 hours of hot sea water in the heat storage water tank, control seawater flow rate 20kg/h, daily output fresh water amount can reach 18-24kg/m
2
Claims (7)
1. a combined solar energy sea water distiling plant is characterized in that comprising water escape valve (1), heat storage water tank (2), steam distribution case (4), condensation evaporation pipe (5), cloth liquid case (7), plate solar collector (8), first water drain valve (9), second water drain valve (10), water tank (11), constant-temperature evaporation device (15), the first fresh water valve (18), water intaking valve (20), fresh-water tank (21), the second fresh water valve (23), water discharge valve (24), compound parabolic concentrator collector (25), director (26); Constant-temperature evaporation device (15) comprises fresh water receiving tank (17), hydrophilic fibers (19); Fresh-water tank (21) comprises vapour stream through hole (12), condensation transverse slat (13), second ventilating pit (14), the perpendicular wall (16) of condensation, and steam distribution case (4) comprises flow deflector (3), first ventilating pit (6), hot face (22); Water tank (11), first water drain valve (9), flat plate collector (8), cloth liquid case (7) link to each other in order; Water tank (11) links to each other with the external world through second water drain valve (10); Cloth liquid case (7) bottom is provided with liquid distributing hole, and cloth liquid case (7) below is provided with condensation evaporation pipe (5), condensation evaporation pipe (5) lateral arrangement; Obliquity is arranged; Condensation evaporation pipe (5) is high-end to link to each other with steam distribution case (4), and condensation evaporation pipe (5) low side links to each other with fresh-water tank (21), and the steam distribution case links to each other with heat storage water tank (2) through director (26); Hot face (22) below is provided with compound parabolic concentrator collector (25); Be perpendicular wall (16) of condensation and condensation transverse slat (13) between fresh-water tank (21) and the constant-temperature evaporation device (15), constant-temperature evaporation device (15) bottom is provided with water discharge valve (24), and constant-temperature evaporation device (15) middle and upper part is provided with water intaking valve (20); Constant-temperature evaporation device (15) end face low side is provided with the first fresh water valve (18); Constant-temperature evaporation device (15) links to each other with the external world through the first fresh water valve (18), water intaking valve (20), water discharge valve (24) respectively, and fresh-water tank (21) links to each other with the external world through the second fresh water valve (23) of bottom, and heat storage water tank (2) links to each other with the external world through the water escape valve (1) of bottom.
2. a kind of combined solar energy sea water distiling plant according to claim 1 is characterized in that described flow deflector (3), hot face (22) angle of inclination are 5-30 °.
3. a kind of combined solar energy sea water distiling plant according to claim 1 is characterized in that described hot face (22) downside scribbles coating for selective absorption.
4. a kind of combined solar energy sea water distiling plant according to claim 1 is characterized in that described condensation evaporation pipe (5) angle of inclination is 5-30 °, and plurality of rows is arranged, some row, and in-line arrangement is arranged.
5. a kind of combined solar energy sea water distiling plant according to claim 1 is characterized in that described condensation is erected on wall (16), the condensation transverse slat (13) to be furnished with hydrophilic fibers (19).
6. a kind of combined solar energy sea water distiling plant according to claim 1 is characterized in that the slit between described flow deflector (3) and the fresh-water tank (21) is 0.5-5mm.
7. combined solar energy method for desalting seawater that use is installed according to claim 1 is characterized in that: adopt plate solar collector (8) to absorb sun power, be used for heating from the flow through seawater of flat plate collector (8) of water tank (11); With seawater preheating to temperature is 50-60 ℃ hot sea water, and hot sea water gets in the cloth liquid case (7), flows down from the liquid distributing hole of cloth liquid case (7) bottom; Be dropped on the condensation evaporation pipe (5), the portion of hot seawater is gone up at condensation evaporation pipe (5) and is formed one deck seawater film, and the residual heat seawater separates with condensation evaporation pipe (5) under action of gravity; Drop onto on the flow deflector (3); Import on the hot face (22) through flow deflector (3), flow deflector (3) and hot face (22) have obliquity, on flow deflector (3) and hot face (22), all form one deck seawater film; Hot face (22) downside scribbles coating for selective absorption; Absorb compound parabolic concentrator collector (25) accumulative sunshine and convert heat to, the seawater film on the heating hot face (22), the seawater film absorbs heat and evaporates rapidly; Unevaporated seawater flows in the heat storage water tank (2); The steam that produces gets into condensation evaporation pipe (5) through steam distribution case (4), and steam condenses into fresh water and gets into fresh-water tank (21) in condensation evaporation pipe (5), and is drawn by the second fresh water valve (23); The latent heat of condensation that discharges during the interior vapor condensation of condensation evaporation pipe (5) the outer seawater film of generating tube (5) that is condensed absorbs; Impel the evaporation of seawater membrane portions, produce secondary steam, secondary steam gets into fresh-water tank (21) through vapour stream through hole (12); On condensation transverse slat (13) between fresh-water tank (21) and the constant-temperature evaporation device (15) and the perpendicular wall (16) of condensation, condense into fresh water; The latent heat of condensation is imported in the constant-temperature evaporation device (15) through the perpendicular wall (16) of condensation, condensation transverse slat (13), on perpendicular wall (16) of condensation and condensation transverse slat (13), is provided with hydrophilic fibers (19), under the effect of hydrophilic fibers (19); The seawater of constant-temperature evaporation device (15) bottom all forms one deck seawater film on perpendicular wall (16) of condensation and condensation transverse slat (13); The latent heat of condensation of emitting when the seawater film absorbs from the secondary steam condensation is evaporated rapidly, produces three times steam, and three times steam condenses into fresh water entering fresh water receiving tank (17) at the end face of constant-temperature evaporation device (15); And draw by the first fresh water valve (18), the hot sea water in the heat storage water tank (2) is every to be transferred in the water tank (11) at a distance from 2-5 hour.
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| CN201110127563A CN102225787B (en) | 2011-05-17 | 2011-05-17 | Composite solar seawater desalination device and method |
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| CN201110127563A CN102225787B (en) | 2011-05-17 | 2011-05-17 | Composite solar seawater desalination device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102583609A (en) * | 2012-03-20 | 2012-07-18 | 浙江大学 | Multi-effect vertical plate falling film solar desalination unit and method thereof |
| CN102795693B (en) * | 2012-08-06 | 2014-04-23 | 西安交通大学 | Solar energy and wind energy jointly driven sea water desalination system based on LNG (Liquefied Natural Gas) cold energy utilization |
| CN103449547B (en) * | 2013-09-11 | 2014-12-10 | 北京理工大学 | Serial multi-stage isothermal heating multiple-effect heat return humidifying and dehumidifying solar-powered seawater desalination machine |
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Effective date of registration: 20191024 Address after: 310018 Room 2007-9, 2 Building of East Hangzhou International Business Center, Jianggan District, Hangzhou City, Zhejiang Province, Hangzhou Economic and Technological Development Zone Patentee after: Zhejiang Zhongguang New Energy Technology Co., Ltd. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee before: Zhejiang University |