CN104803532B - A kind of membrane type humidifies dehumidification sea water desalinating unit and method for desalting seawater - Google Patents

A kind of membrane type humidifies dehumidification sea water desalinating unit and method for desalting seawater Download PDF

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CN104803532B
CN104803532B CN201510174945.XA CN201510174945A CN104803532B CN 104803532 B CN104803532 B CN 104803532B CN 201510174945 A CN201510174945 A CN 201510174945A CN 104803532 B CN104803532 B CN 104803532B
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membrane type
seawater
dehumidifier
type humidifier
outlets
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CN104803532A (en
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张立志
李国培
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention discloses a kind of membrane type humidification dehumidification sea water desalinating unit and method for desalting seawater, including heater, membrane type humidifier, condensation dehumidifier;The C air outlets of membrane type humidifier are connected with the H air inlets of condensation dehumidifier, and the G air outlets for condensing dehumidifier connect the A air inlets of membrane type humidifier by blower fan;The outlet of heater is connected with the B inlets of membrane type humidifier, and the D liquid outlets of membrane type humidifier connect the ingress interface of heater by reflux pump;The F inlets of seawater pump discharge connection condensation dehumidifier, the E liquid outlets for condensing dehumidifier connect through the ingress interface that mouthpiece connects heater;Because the present apparatus does not obtain fresh water using conventional solar energy sea water high temperature evaporation condensation method, but using Membrane Materials principle in the membrane type humidifier humidification and in dehumidifier is condensed dehumidification seawater is desalinated, and the high selection permeability and membrane flux high that film has can improve desalinization efficiency and produce water speed rate.

Description

A kind of membrane type humidifies dehumidification sea water desalinating unit and method for desalting seawater
Technical field
The present invention relates to water treatment system and its technique, more particularly to a kind of membrane type humidification dehumidification sea water desalinating unit and sea Water desalination method.
Background technology
Freshwater resources are one of most important material bases of human survival and development.Desalinization and wastewater purification technology are just Progressively turn into and solve freshwater resources important means in short supply.
Desalinization, also known as seawater desalination, is the process for separating salt and water in seawater.Conventional method for desalting seawater has heat Two kinds of method and embrane method.Mainly using multistage flash evaporation, multi-effect distilling, pressure steam distillation, embrane method refers mainly to counter-infiltration to hot method.Hot method is usual Need to consume a large amount of high-grade energies, and production equipment is complicated, expensive;The reverse osmosis technology of embrane method, it is a kind of using half The selective penetrated property of permeable membrane, makes water pass through pellicle against concentration gradient under conditions of outer high force, and makes salinity and impurity It is trapped in the technology of film opposite side.Hyperfiltration is general to be driven by electric energy and mechanical energy, and system needs to maintain operation pressure higher Power, the voltage endurance capability requirement to equipment is very high.The problem of existing hot method and Membrane seawater desalination technology facing is equipment It is required that it is high, need to consume a large amount of high-grade energies, and the fresh water yield of seawater is relatively low.
At present, the energy that desalting process is used is often the heat engine that motor, coal and oil do fuel, and China Power source is main based on the thermal power generation of coal, thus the energy supply of existing desalting process focus primarily upon it is non-renewable The energy, and the use of fossil fuel also brings very big pressure to environment.
Additionally, traditional method for desalting seawater is typically with heating seawater or sunlight seawater makes moisture in seawater Evaporation, then condenses to the fresh water steam for steaming, and finally obtains fresh water.Because evaporation of seawater speed is limited, so this Method for desalting seawater is less efficient.
The content of the invention
Shortcoming and defect it is an object of the invention to overcome above-mentioned prior art, there is provided a kind of membrane type humidifies dehumidification seawater Desalting plant and method for desalting seawater.Overcome completely using electricity, the energy form drawback of fossil fuel present in prior art, Change after existing thermal-arrest the directly water salt clastotype of high temperature evaporation seawater, improve fresh water output efficiency.
The present invention is achieved through the following technical solutions:
A kind of membrane type humidifies dehumidification sea water desalinating unit, including heater, membrane type humidifier 9, condensation dehumidifier 3;
The C air outlets 15 of membrane type humidifier 9 are connected with the H air inlets 16 of condensation dehumidifier 3, condense the G air-out of dehumidifier 3 Mouth 17 connects the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The outlet of heater is connected with the B inlets 8 of membrane type humidifier 9, and the D liquid outlets 10 of membrane type humidifier 9 pass through Reflux pump 12 connects the ingress interface 6 of heater;
The F inlets 2 of the outlet connection condensation dehumidifier 3 of sea water pump 1, the E liquid outlets 4 for condensing dehumidifier 3 pass through mouthpiece 5 Connect the ingress interface 6 of heater;
Condensation dehumidifier 3 has fresh water collecting device 18, the connection fresh water of fresh water collecting device 18 storage tank 19.
The heater is solar heater 7 or electric heater 20.
The D liquid outlets 10 of the membrane type humidifier 9 are additionally provided with a branch line with valve 11.
The method that above-mentioned membrane type humidification dehumidification sea water desalinating unit is desalinated seawater is as follows:
Seawater passes through sea water pump 1 and is input into the F inlets 2 of condensation dehumidifier 3 and is heated by condensing dehumidifier 3, heating Seawater afterwards flows into solar heater 7 from the E liquid outlets 4 of condensation dehumidifier 3, and solar heater 7 pairs carrys out autocondensation dehumidification The seawater of device 3 is heated again, and the seawater after reheating enters membrane type humidifier 9, the sea after reheating by B inlets 8 Water is divided into two branch roads from after the outflow membrane type of D liquid outlets 10 humidifier 9, wherein a branch road is transmitted back to solar energy through reflux pump 12 Heater 7, another branch road is through the discharge membrane type of valve 11 humidifier 9;Air (low temperature) then enters membrane type and humidifies through A air inlets 14 Device 9 is humidified, heated, humidify, heating after through H air inlets 16 enter condensation dehumidifier 3, now conveyed with sea water pump 1 The charging seawater for coming carries out heat exchange in dehumidifier 3, makes the air themperature reduction for being originally heated, humidifying, under water capacity Drop, the water being condensed out enters in the fresh water collecting device 18 for condensing the bottom of dehumidifier 3 after departing from air, then exports simultaneously Fresh water storage tank 19 is entered into, and the seawater from condensation dehumidifier 3 out is then divided into two due to temperature rising at mouthpiece 5 Branch road, wherein outside branch road discharge condensation dehumidifier 3, another branch road is sent at ingress interface 6 sea with the conveying of reflux pump 12 Water mixes, and is heated to required temperature in feeding solar heater 7 afterwards, so as to complete the circulation of seawater, realizes desalinization.
A kind of membrane type humidifies dehumidification sea water desalinating unit, including heater, membrane type humidifier 9, condensation dehumidifier 3;
The heater be heat pump heating system, the heat pump heating system include condenser 24, refrigeration liquid storage tank 26, Throttle expansion valve 27, evaporator 29, compressor 31;
The B outlets 25 of the condenser 24 are sequentially connected refrigeration liquid storage tank 26, throttle expansion valve 27, the refrigeration of evaporator 29 Agent import 28;The refrigerant outlet 30 of evaporator 29 connects the A imports 23 of condenser 24 by compressor 31;
The C air outlets 15 of membrane type humidifier 9 are connected with the H air inlets 16 of condensation dehumidifier 3, condense the G air-out of dehumidifier 3 Mouth 17 connects the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The D outlets 22 of condenser 24 are connected with the B inlets 8 of membrane type humidifier 9, and the D liquid outlets 10 of membrane type humidifier 9 lead to Cross the ingress interface 6 of the C imports 21 of the connection condenser 24 of reflux pump 12;
The E liquid outlets 4 for condensing dehumidifier 3 connect the sea intake 32 and condenser of evaporator 29 by mouthpiece 5 respectively 24 ingress interface 6;The seawer outlet 33 of evaporator 29 connects the F inlets 2 of condensation dehumidifier 3 by pump 34, sea water pump 1 The F inlets 2 of the connection condensation dehumidifier 3 of seawater efferent duct 35;
The condensation dehumidifier 3 with fresh water collecting device 18, the connection fresh water of fresh water collecting device 18 storage tank 19.
The D liquid outlets 10 of the membrane type humidifier 9 are additionally provided with a branch line with valve 11.
The method that above-mentioned membrane type humidification dehumidification sea water desalinating unit is desalinated seawater is as follows:
Enter in refrigeration liquid storage tank 26 from the refrigerating fluids of the outflow of the B of condenser 24 outlet 25, refrigerating fluid is from refrigeration liquid storage tank After 26 flow through throttle expansion valve 27, from refrigerant inlet 28 enter evaporator 29 in, in evaporator 29 to sea intake 32 at The seawater of inflow carries out heat absorption and completes evaporation process, and the refrigerant vapour of generation is flowed out into from refrigerant outlet 30 Compressor 31, it is pressurized after steam (high pressure) from A imports 23 enter condenser 24 in, C imports 21 are entered in condenser 24 The seawater for entering carries out heat release, it is condensed after refrigerant vapour realize liquefaction, and refrigeration liquid storage tank 26 is flowed back to from B outlets 25 In, so as to complete the circulation of refrigerant;
The C air outlets 15 of membrane type humidifier 9 are connected with the air inlet 16 of condensation dehumidifier 3, through the sky out of G air outlets 17 Gas is input into back in the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The D outlets 22 of condenser 24 are connected with the B inlets 8 of membrane type humidifier 9;Seawater flows out membrane type from D liquid outlets 10 It is divided into two branch roads after humidifier 9, wherein a branch road is transmitted back in the C sea intakes 21 of condenser 24 through reflux pump 12, separately One branch road is through the discharge membrane type of valve 11 humidifier 9;
Seawater is input into the F inlets 2 of condensation dehumidifier 3 and is heated by condensing in dehumidifier 3 by sea water pump 1, plus Seawater after heat is flowed out from the E liquid outlets 4 of condensation dehumidifier 3, and two are divided at pipeline 5, wherein one from sea intake 32 Into in evaporator 29, flowed out from seawer outlet 33 afterwards, through the seawater that pump 34 is conveyed at seawater efferent duct 35 with sea water pump 1 Converge, enter in condenser 24 from C imports 21 after converging at another branch road and ingress interface 6 and heat, in condenser 24 Entered in membrane type humidifier 9 by B inlets 8 again from after the outflow of D outlets 22 after heating, so as to complete following for sea water service system Ring, realizes desalinization.
The present invention has the following advantages and effect relative to prior art:
(1) low-grade energy is utilized:Because membrane type humidifier feedstock solution operation temperature is generally below 80 DEG C, and membrane type adds Wet device, condensation dehumidifier are atmospheric operation, it is possible to low-grade energy is utilized, such as more than solar energy, industrial waste gas waste liquid Heat is waited and provides energy for system, so as to realize heating the feed liquid of entrance membrane type humidifier, the feed liquid after heating can be Air is humidified in membrane type humidifier.And existing method for desalting seawater is mainly in thermal evaporation and membrane reverse osmosis method, its Middle hot method needs to carry out ebuillition of heated to seawater and be evaporated in seawater surface, and efficiency is low, and fossil fuel or electric energy disappear Consumption is big;Membrane reverse osmosis method needs also exist for consuming big energy to provide high pressure for system.It is light that the present apparatus and method overcome seawater Dependence of the change process to fossil fuel and electric energy, realizes the effective utilization to low-grade energy, is conducive to energy-saving and emission-reduction and ring Protect in border.
(2) capacity usage ratio is high:In existing sea water desalinating unit, be expelled directly out by the high temperature seawater after concentration be System, causes very big energy loss, and present apparatus arrangement form can recycle form using air and solution, also may be used With using after air and solution single are utilized respectively from condensation dehumidifier and membrane type humidifier in the form of discharge system.The present apparatus When arrangement form is circulation form, the feed liquid after concentration flows again after can mixing with a certain amount of feedstock solution because temperature is higher Return in membrane type humidifier and reuse, the air after same dehumidification because there is water capacity very high, so film can also be re-entered In formula humidifier again heat up humidification, so since system can realize the circulation of air system and the circulation of solution system, it is to avoid A large amount of losses of energy.When present apparatus arrangement form is in line form, using the heat that dividing wall type heat exchanger is externally arranged respectively Air and hot solution carry out heat recovery, and reducing energy consumption improves capacity usage ratio.
(3) the water salt separative efficiency of seawater is improved:Because the present apparatus is not using conventional solar energy sea water high temperature evaporation Condensation method obtains fresh water, but utilize Membrane Materials principle in the membrane type humidifier humidification and in dehumidifier is condensed dehumidification to sea Water is desalinated, and the high selection permeability and membrane flux high that film has can improve desalinization efficiency and produce water speed rate.
Brief description of the drawings
Fig. 1 is that membrane type of the present invention humidifies dehumidification sea water desalinating unit structural representation.
Fig. 2 is that membrane type of the present invention humidifies dehumidification second structural representation of sea water desalinating unit.
Fig. 3 is the third structural representation of membrane type of the present invention humidification dehumidification sea water desalinating unit.
Specific embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figure 1, 2.A kind of membrane type humidification dehumidification sea water desalinating unit of the present invention, including heater, membrane type humidification Device 9, condensation dehumidifier 3;
The C air outlets 15 of membrane type humidifier 9 are connected with the H air inlets 16 of condensation dehumidifier 3, condense the G air-out of dehumidifier 3 Mouth 17 connects the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The outlet of heater is connected with the B inlets 8 of membrane type humidifier 9, and the D liquid outlets 10 of membrane type humidifier 9 pass through Reflux pump 12 connects the ingress interface 6 of heater;
The F inlets 2 of the outlet connection condensation dehumidifier 3 of sea water pump 1, the E liquid outlets 4 for condensing dehumidifier 3 pass through mouthpiece 5 Connect the ingress interface 6 of heater;
Condensation dehumidifier 3 has fresh water collecting device 18, the connection fresh water of fresh water collecting device 18 storage tank 19.
The heater is solar heater 7 or electric heater 20.
The D liquid outlets 10 of the membrane type humidifier 9 are additionally provided with a branch line with valve 11.
As shown in Figure 1.The method that membrane type humidification dehumidification sea water desalinating unit is desalinated seawater can be as follows Realize:
Seawater passes through sea water pump 1 and is input into the F inlets 2 of condensation dehumidifier 3 and is heated by condensing dehumidifier 3, heating Seawater afterwards flows into solar heater 7 from the E liquid outlets 4 of condensation dehumidifier 3, and solar heater 7 pairs carrys out autocondensation dehumidification The seawater of device 3 is heated again, and the seawater after reheating enters membrane type humidifier 9, the sea after reheating by B inlets 8 Water is divided into two branch roads from after the outflow membrane type of D liquid outlets 10 humidifier 9, wherein a branch road is transmitted back to solar energy through reflux pump 12 Heater 7, another branch road is through the discharge membrane type of valve 11 humidifier 9;Air (low temperature) then enters membrane type and humidifies through A air inlets 14 Device 9 is humidified, heated, humidify, heating after through H air inlets 16 enter condensation dehumidifier 3, now conveyed with sea water pump 1 The charging seawater for coming carries out heat exchange in dehumidifier 3, makes the air themperature reduction for being originally heated, humidifying, under water capacity Drop, the water being condensed out enters in the fresh water collecting device 18 for condensing the bottom of dehumidifier 3 after departing from air, then exports simultaneously Fresh water storage tank 19 is entered into, and the seawater from condensation dehumidifier 3 out is then divided into two due to temperature rising at mouthpiece 5 Branch road, wherein outside branch road discharge condensation dehumidifier 3, another branch road is sent at ingress interface 6 sea with the conveying of reflux pump 12 Water mixes, and is heated to required temperature in feeding solar heater 7 afterwards, so as to complete the circulation of seawater, realizes desalinization.
Because seawater is constantly concentrated in present apparatus running, so the higher concentration seawater flowed out from D liquid outlets 10 Need through the discharge system of valve 11.Condensation dehumidifier 3 is realized to the pre- of the import seawater of solar heater 7 in cyclic process Heat, while because there is a large amount of vapor to be lost by membrane pore structure in membrane type humidifier 9 during also supplementing seawater circulation Seawer quality flow.
As shown in Figure 3.Another membrane type humidifies dehumidification sea water desalinating unit, including heater, membrane type humidifier 9, cold Solidifying dehumidifier 3;
The heater be heat pump heating system, the heat pump heating system include condenser 24, refrigeration liquid storage tank 26, Throttle expansion valve 27, evaporator 29, compressor 31;
The B outlets 25 of the condenser 24 are sequentially connected refrigeration liquid storage tank 26, throttle expansion valve 27, the refrigeration of evaporator 29 Agent import 28;The refrigerant outlet 30 of evaporator 29 connects the A imports 23 of condenser 24 by compressor 31;
The C air outlets 15 of membrane type humidifier 9 are connected with the H air inlets 16 of condensation dehumidifier 3, condense the G air-out of dehumidifier 3 Mouth 17 connects the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The D outlets 22 of condenser 24 are connected with the B inlets 8 of membrane type humidifier 9, and the D liquid outlets 10 of membrane type humidifier 9 lead to Cross the ingress interface 6 of the C imports 21 of the connection condenser 24 of reflux pump 12;
The E liquid outlets 4 for condensing dehumidifier 3 connect the sea intake 32 and condenser of evaporator 29 by mouthpiece 5 respectively 24 ingress interface 6;The seawer outlet 33 of evaporator 29 connects the F inlets 2 of condensation dehumidifier 3 by pump 34, sea water pump 1 The F inlets 2 of the connection condensation dehumidifier 3 of seawater efferent duct 35;
The condensation dehumidifier 3 with fresh water collecting device 18, the connection fresh water of fresh water collecting device 18 storage tank 19.
The D liquid outlets 10 of the membrane type humidifier 9 are additionally provided with a branch line with valve 11.
As in Fig. 3, after refrigerating fluid flows through throttle expansion valve 27 from refrigeration liquid storage tank 26, enter from refrigerant inlet 28 and evaporate In device 29, is carried out by heat absorption and evaporation process is completed for the seawater flowed at sea intake 32 in evaporator 29, generation Refrigerant vapour flows out into compressor 31 from refrigerant outlet 30, it is pressurized after high steam enter cold from A imports 23 In condenser 24, in condenser 24 seawater of 21 mouthfuls of C imports entrance are carried out with heat release, it is condensed after refrigerant vapour realize liquid Change, and flowed back in refrigeration liquid storage tank 26 from B outlets 25.
As shown in Figure 3.The method that membrane type humidification dehumidification sea water desalinating unit is desalinated seawater can be by following step It is rapid to realize:
Enter in refrigeration liquid storage tank 26 from the refrigerating fluids of the outflow of the B of condenser 24 outlet 25, refrigerating fluid is from refrigeration liquid storage tank After 26 flow through throttle expansion valve 27, from refrigerant inlet 28 enter evaporator 29 in, in evaporator 29 to sea intake 32 at The seawater of inflow carries out heat absorption and completes evaporation process, and the refrigerant vapour of generation is flowed out into from refrigerant outlet 30 Compressor 31, it is pressurized after steam (high pressure) from A imports 23 enter condenser 24 in, C imports 21 are entered in condenser 24 The seawater for entering carries out heat release, it is condensed after refrigerant vapour realize liquefaction, and refrigeration liquid storage tank 26 is flowed back to from B outlets 25 In, so as to complete the circulation of refrigerant;
The C air outlets 15 of membrane type humidifier 9 are connected with the air inlet 16 of condensation dehumidifier 3, through the sky out of G air outlets 17 Gas is input into back in the A air inlets 14 of membrane type humidifier 9 by blower fan 13;
The D outlets 22 of condenser 24 are connected with the B inlets 8 of membrane type humidifier 9;Seawater flows out membrane type from D liquid outlets 10 It is divided into two branch roads after humidifier 9, wherein a branch road is transmitted back in the C sea intakes 21 of condenser 24 through reflux pump 12, separately One branch road is through the discharge membrane type of valve 11 humidifier 9;
Seawater is input into the F inlets 2 of condensation dehumidifier 3 and is heated by condensing in dehumidifier 3 by sea water pump 1, plus Seawater after heat is flowed out from the E liquid outlets 4 of condensation dehumidifier 3, and two are divided at pipeline 5, wherein one from sea intake 32 Into in evaporator 29, flowed out from seawer outlet 33 afterwards, through the seawater that pump 34 is conveyed at seawater efferent duct 35 with sea water pump 1 Converge, enter in condenser 24 from C imports 21 after converging at another branch road and ingress interface 6 and heat, in condenser 24 Entered in membrane type humidifier 9 by B inlets 8 again from after the outflow of D outlets 22 after heating, so as to complete following for sea water service system Ring, realizes desalinization.
As described above, present apparatus energy supply can be solar heater (solar thermal collector), electric heater, heat pump Or intercouple and use.The arrangement form of whole device can recycle form using air and solution, it would however also be possible to employ The form of air and solution single direct outer row after utilizing.When system arrangement form is circulation form, energy supply device can be with Give air circulation system heating, it is also possible to give solution recycle system heating.When system arrangement form is in line form, between can be used The hot-air and hot solution that wall type heat exchanger is externally arranged respectively carry out heat recovery, and fresh feed air and solution are carried out pre- Heat, can also be strengthened using the vacuum membrane distillation of per-meate side arrangement vavuum pump come implementation process reinforcing and vapor permeation.Condensation subtracts Wet device has condensation dehumidification, collects storage fresh water, the effect to solution recycle system preheating simultaneously.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, and other are any without departing from Spirit Essence of the invention With the change, modification, replacement made under principle, combine, simplify, should be equivalent substitute mode, be included in of the invention Within protection domain.

Claims (6)

1. a kind of method that use membrane type humidification dehumidification sea water desalinating unit is desalinated seawater, the membrane type humidification dehumidification sea Water desalination apparatus include heater, membrane type humidifier (9), condensation dehumidifier (3);
The C air outlets (15) of membrane type humidifier (9) are connected with the H air inlets (16) of condensation dehumidifier (3), condensation dehumidifier (3) G air outlets (17) pass through blower fan (13) connect membrane type humidifier (9) A air inlets (14);
The outlet of heater is connected with the B inlets (8) of membrane type humidifier (9), the D liquid outlets (10) of membrane type humidifier (9) The ingress interface (6) of heater is connected by reflux pump (12);
The F inlets (2) of sea water pump (1) outlet connection condensation dehumidifier (3), the E liquid outlets (4) of condensation dehumidifier (3) pass through Mouthpiece (5) connects the ingress interface (6) of heater;
Condensation dehumidifier (3) connects fresh water storage tank (19) with fresh water collecting device (18), fresh water collecting device (18);
The heater is solar heater (7) or electric heater (20);
It is characterized in that the method comprises the steps:
Seawater passes through sea water pump (1) and is input into the F inlets (2) of condensation dehumidifier (3) and is heated by condensing dehumidifier (3), Seawater after heating flows into solar heater (7) from the E liquid outlets (4) of condensation dehumidifier (3), and solar heater (7) is right The seawater for carrying out autocondensation dehumidifier (3) is heated again, and the seawater after reheating enters membrane type and humidifies by B inlets (8) Device (9), the seawater after reheating is divided into two branch roads after flowing out membrane type humidifier (9) from D liquid outlets (10), wherein a branch road Solar heater (7) is transmitted back to through reflux pump (12), another branch road discharges membrane type humidifier (9) through valve (11);Air Then enter membrane type humidifier (9) through A air inlets (14) to be humidified, heat, humidify, heating after through H air inlets (16) entrance Condensation dehumidifier (3), the charging seawater for now coming with sea water pump (1) conveying carries out heat exchange in condensation dehumidifier (3), Make the air themperature reduction for being originally heated, humidifying, water capacity declines, and the water being condensed out enters condensation after departing from air In the fresh water collecting device (18) of dehumidifier (3) bottom, fresh water storage tank (19) is then exported and entered into, and from condensation dehumidifier (3) seawater in out is then divided into two branch roads due to temperature rising at mouthpiece (5) place, wherein branch road discharge condensation dehumidification Outside device (3), another branch road is sent to the sea water mixing at ingress interface (6) place and reflux pump (12) conveying, and solar energy is sent into afterwards Heater is heated to required temperature in (7), so as to complete the circulation of seawater, realizes desalinization.
2. the method that membrane type humidification dehumidification sea water desalinating unit is desalinated seawater according to claim 1, its feature exists In:The D liquid outlets (10) of the membrane type humidifier (9) are additionally provided with a branch line with valve (11).
3. a kind of membrane type humidifies dehumidification sea water desalinating unit, it is characterised in that including heater, membrane type humidifier (9), condensation Dehumidifier (3);
The heater be heat pump heating system, the heat pump heating system include condenser (24), refrigeration liquid storage tank (26), Throttle expansion valve (27), evaporator (29), compressor (31);
B outlets (25) of the condenser (24) is sequentially connected refrigeration liquid storage tank (26), throttle expansion valve (27), evaporator (29) Refrigerant inlet (28);The refrigerant outlet (30) of evaporator (29) enters by the A of compressor (31) connection condenser (24) Mouth (23);
The C air outlets (15) of membrane type humidifier (9) are connected with the H air inlets (16) of condensation dehumidifier (3), condensation dehumidifier (3) G air outlets (17) pass through blower fan (13) connect membrane type humidifier (9) A air inlets (14);
D outlets (22) of condenser (24) is connected with the B inlets (8) of membrane type humidifier (9), and the D of membrane type humidifier (9) goes out liquid Mouth (10) passes through the ingress interface (6) that reflux pump (12) connects the C imports (21) of condenser (24);
Condensation dehumidifier (3) E liquid outlets (4) connected respectively by mouthpiece (5) evaporator (29) sea intake (32) and The ingress interface (6) of condenser (24);The seawer outlet (33) of evaporator (29) connects condensation dehumidifier (3) by pump (34) F inlets (2), the F inlets (2) of the seawater efferent duct (35) connection condensation dehumidifier (3) of sea water pump (1).
4. membrane type humidifies dehumidification sea water desalinating unit according to claim 3, it is characterised in that:Condensation dehumidifier (3) With fresh water collecting device (18), fresh water collecting device (18) connects fresh water storage tank (19).
5. membrane type according to claim 3 humidifies dehumidification sea water desalinating unit, it is characterised in that:The membrane type humidifier (9) D liquid outlets (10) are additionally provided with a branch line with valve (11).
6. the method desalinated seawater using membrane type humidification dehumidification sea water desalinating unit described in claim 5, its feature is existed In following step:
Enter in refrigeration liquid storage tank (26) from the refrigerating fluid of B outlets (25) outflows of condenser (24), refrigerating fluid is stored up from refrigerating fluid After tank (26) flows through throttle expansion valve (27), enter in evaporator (29) from refrigerant inlet (28), it is right in evaporator (29) The seawater that sea intake (32) place flows into carries out heat absorption and completes evaporation process, and the refrigerant vapour of generation goes out from refrigerant Mouthful (30) flow out into compressor (31), it is pressurized after steam enter in condenser (24) from A imports (23), in condenser (24) heat release carried out to the seawater that C imports (21) enter in, it is condensed after refrigerant vapour realize liquefaction, and from B outlets (25) place is flowed back in refrigeration liquid storage tank (26), so as to complete the circulation of refrigerant;
The C air outlets (15) of membrane type humidifier (9) are connected with the air inlet 16 of condensation dehumidifier (3), through G air outlets (17) out Air be input into back in the A air inlets (14) of membrane type humidifier (9) by blower fan (13);
D outlets (22) of condenser (24) is connected with the B inlets (8) of membrane type humidifier (9);Seawater flows from D liquid outlets (10) It is divided into two branch roads after going out membrane type humidifier (9), wherein a branch road is transmitted back to the C seawater of condenser (24) through reflux pump (12) Import (21), another branch road discharges membrane type humidifier (9) through valve (11);
Seawater is input into the F inlets (2) of condensation dehumidifier (3) and added in dehumidifier (3) by being condensed by sea water pump (1) Heat, the seawater after heating is divided into two branch roads, wherein one from E liquid outlets (4) outflow of condensation dehumidifier (3) at mouthpiece (5) place Bar branch road enters in evaporator (29) from sea intake (32), is flowed out from seawer outlet (33) afterwards, defeated in seawater through pump (34) The seawater that outlet pipe (35) place conveys with sea water pump (1) converges, another branch road converge with ingress interface (6) place after from C imports (21) place enters heating in condenser (24), from after D outlets (22) outflows again by B feed liquors after heating in condenser (24) Mouth (8) enters in membrane type humidifier (9), so as to complete the circulation of sea water service system, realizes desalinization.
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