CN204588903U - A kind of membrane type humidification dehumidification sea water desalinating plant - Google Patents
A kind of membrane type humidification dehumidification sea water desalinating plant Download PDFInfo
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- CN204588903U CN204588903U CN201520225285.9U CN201520225285U CN204588903U CN 204588903 U CN204588903 U CN 204588903U CN 201520225285 U CN201520225285 U CN 201520225285U CN 204588903 U CN204588903 U CN 204588903U
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a kind of membrane type humidification dehumidification sea water desalinating plant, comprise heating unit, membrane type humidifier, condensation dehumidifier; The C air outlet of membrane type humidifier is connected with the H blast inlet of condensation dehumidifier, and the G air outlet of condensation dehumidifier connects the A blast inlet of membrane type humidifier by blower fan; The outlet of heating unit is connected with the B fluid inlet of membrane type humidifier, and the D liquid outlet of membrane type humidifier connects the ingress interface of heating unit by reflux pump; Sea-water pump outlet connects the F fluid inlet of condensation dehumidifier, and the E liquid outlet of condensation dehumidifier connects the ingress interface being connected heating unit by mouth-piece; Because this device does not adopt conventional solar energy sea water high temperature evaporation condensation method to obtain fresh water, but utilize membrane distillation principle in membrane type humidifier humidification and in condensation dehumidifier dehumidification seawater is desalinated, and the high selective penetrated property that film has and high membrane flux can improve sea water desaltination efficiency and produce water speed.
Description
Technical field
The utility model relates to water treatment system, particularly relates to a kind of membrane type humidification dehumidification sea water desalinating plant.
Background technology
Freshwater resources are one of most important basic substances of human survival and development.Sea water desaltination and wastewater purification technology just progressively become solution Freshwater resources important means in short supply.
Sea water desaltination, also known as sea water desalinization, is the process being separated salt and water in seawater.Conventional method for desalting seawater has Re Fa and embrane method two kinds.Hot method mainly adopts multistage flash evaporation, multi-effect distilling, pressure steam distillation, and embrane method mainly refers to reverse osmosis.Hot method needs to consume a large amount of high-grade energy usually, and production unit is complicated, expensive; The reverse osmosis technology of embrane method, it is a kind of selective penetrated property utilizing semi-permeable membranes, makes water against concentration gradient through semi-permeable membranes, and make salinity and impurity be trapped in the technology of film opposite side under the condition of high force outside.Reverse osmosis method is generally driven by electric energy and mechanical energy, and system needs to maintain higher operating pressure, requires very high to the voltage endurance capability of equipment.The problem of existing hot method and Membrane seawater desalination technology facing be equipment requirements high, need to consume a large amount of high-grade energy, and the fresh water productive rate of seawater is lower.
At present, the energy that desalting process adopts often motor, coal and oil does the heat engine of fuel, and the power source of China is mainly based on the thermal power generation of coal, so the power supply of existing desalting process mainly concentrates on non-renewable energy, and the use of fossil oil also brings very large pressure to environment.
In addition, traditional method for desalting seawater normally adopts heating seawater or solar light irradiation seawater to make moisture evaporation in seawater, then carries out condensation to the fresh water steam steamed, finally obtains fresh water.Because evaporation of seawater speed is limited, so this method for desalting seawater efficiency is lower.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides a kind of membrane type humidification dehumidification sea water desalinating plant.Overcome the energy form drawback making electricity consumption, fossil oil completely existed in prior art, after changing existing thermal-arrest, the water salt clastotype of direct high temperature evaporation seawater, improves fresh water output efficiency.
The utility model is achieved through the following technical solutions:
A kind of membrane type humidification dehumidification sea water desalinating plant, comprises heating unit, membrane type humidifier 9, condensation dehumidifier 3;
The C air outlet 15 of membrane type humidifier 9 is connected with the H blast inlet 16 of condensation dehumidifier 3, and the G air outlet 17 of condensation dehumidifier 3 connects the A blast inlet 14 of membrane type humidifier 9 by blower fan 13;
The outlet of heating unit is connected with the B fluid inlet 8 of membrane type humidifier 9, and the D liquid outlet 10 of membrane type humidifier 9 connects the ingress interface 6 of heating unit by reflux pump 12;
Sea-water pump 1 exports the F fluid inlet 2 connecting condensation dehumidifier 3, and the E liquid outlet 4 of condensation dehumidifier 3 connects the ingress interface 6 of heating unit by mouth-piece 5;
Condensation dehumidifier 3 has fresh water collecting device 18, and fresh water collecting device 18 connects fresh water storage tank 19.
Described heating unit is solar heater 7 or electric heater 20.
The D liquid outlet 10 of described membrane type humidifier 9 is also provided with the branch line of a band valve 11.
The method that above-mentioned membrane type humidification dehumidification sea water desalinating plant is desalinated seawater is as follows:
Seawater is inputted the F fluid inlet 2 of condensation dehumidifier 3 by sea-water pump 1 and is heated by condensation dehumidifier 3, seawater after heating flows into solar heater 7 from the E liquid outlet 4 of condensation dehumidifier 3, solar heater 7 heats again to the seawater carrying out self-condensation dehumidifier 3, seawater after reheating enters membrane type humidifier 9 by B fluid inlet 8, seawater after reheating is divided into two branch roads after D liquid outlet 10 flows out membrane type humidifier 9, wherein a branch road is transmitted back to solar heater 7 through reflux pump 12, and another branch road discharges membrane type humidifier 9 through valve 11, air (low temperature) then enters membrane type humidifier 9 through A blast inlet 14 and carries out humidification, heat, humidification, condensation dehumidifier 3 is entered through H blast inlet 16 after heating, now the charging seawater of coming is carried to carry out thermal exchange in dehumidifier 3 with sea-water pump 1, make originally to be heated, the air themperature of humidification reduces, water capacity declines, the water being condensed out enters in the fresh water collecting device 18 of condensation dehumidifier 3 bottom after departing from air, then export and enter into fresh water storage tank 19, and seawater out raises due to temperature from condensation dehumidifier 3, then punish into two branch roads at mouth-piece 5, wherein a branch road is discharged outside condensation dehumidifier 3, the sea water mixing that ingress interface 6 place and reflux pump 12 are carried delivered to by another branch road, send to be afterwards heated in solar heater 7 temperature required, thus complete the circulation of seawater, realize sea water desaltination.
A kind of membrane type humidification dehumidification sea water desalinating plant, comprises heating unit, membrane type humidifier 9, condensation dehumidifier 3;
Described heating unit is heat pump heating system, and described heat pump heating system comprises condenser 24, refrigerant fluid storage tank 26, throttle expansion valve 27, vaporizer 29, compressor 31;
The B outlet 25 of described condenser 24 connects the refrigerant inlet 28 of refrigerant fluid storage tank 26, throttle expansion valve 27, vaporizer 29 successively; The refrigerant outlet 30 of vaporizer 29 connects the A import 23 of condenser 24 through compressor 31;
The C air outlet 15 of membrane type humidifier 9 is connected with the H blast inlet 16 of condensation dehumidifier 3, and the G air outlet 17 of condensation dehumidifier 3 connects the A blast inlet 14 of membrane type humidifier 9 by blower fan 13;
The D outlet 22 of condenser 24 is connected with the B fluid inlet 8 of membrane type humidifier 9, and the D liquid outlet 10 of membrane type humidifier 9 connects the ingress interface 6 of the C import 21 of condenser 24 by reflux pump 12;
The E liquid outlet 4 of condensation dehumidifier 3 connects the sea intake 32 of vaporizer 29 and the ingress interface 6 of condenser 24 respectively by mouth-piece 5; The seawer outlet 33 of vaporizer 29 connects the F fluid inlet 2 of condensation dehumidifier 3 by pump 34, the seawater output tube 35 of sea-water pump 1 connects the F fluid inlet 2 of condensation dehumidifier 3;
Described condensation dehumidifier 3 there is fresh water collecting device 18, fresh water collecting device 18 connects fresh water storage tank 19.
The D liquid outlet 10 of described membrane type humidifier 9 is also provided with the branch line of a band valve 11.
The method that above-mentioned membrane type humidification dehumidification sea water desalinating plant is desalinated seawater is as follows:
The refrigerant fluid flowed out from the B outlet 25 of condenser 24 enters refrigerant fluid storage tank 26, after refrigerant fluid flows through throttle expansion valve 27 from refrigerant fluid storage tank 26, enter vaporizer 29 from refrigerant inlet 28, in vaporizer 29, the seawater that sea intake 32 place flows into is carried out to heat absorption and completes evaporative process, the refrigerant vapour generated flows out into compressor 31 from refrigerant outlet 30, steam (high pressure) after pressurization enters condenser 24 from A import 23, in condenser 24, heat release is carried out to the seawater that C import 21 enters, liquefaction is realized through condensed refrigerant vapour, and export 25 from B and flow back in refrigerant fluid storage tank 26, thus complete the circulation of refrigeration agent,
The C air outlet 15 of membrane type humidifier 9 is connected with the blast inlet 16 of condensation dehumidifier 3, inputs back in the A blast inlet 14 of membrane type humidifier 9 through G air outlet 17 air out by blower fan 13;
The D outlet 22 of condenser 24 is connected with the B fluid inlet 8 of membrane type humidifier 9; Seawater is divided into two branch roads after D liquid outlet 10 flows out membrane type humidifier 9, and wherein a branch road is transmitted back in the C sea intake 21 of condenser 24 through reflux pump 12, and another branch road discharges membrane type humidifier 9 through valve 11;
Seawater by sea-water pump 1 input condensation dehumidifier 3 F fluid inlet 2 and by being heated in condensation dehumidifier 3, seawater after heating flows out from the E liquid outlet 4 of condensation dehumidifier 3, two are punished at pipeline 5, wherein one enters vaporizer 29 from sea intake 32, flow out from seawer outlet 33 afterwards, the seawater carried at seawater output tube 35 place and sea-water pump 1 through pump 34 converges, enter in condenser 24 from C import 21 after another branch road and ingress interface 6 place converge and heat, again enter membrane type humidifier 9 by B fluid inlet 8 after D outlet 22 is flowed out after heating in condenser 24, thus complete the circulation of sea water system, realize sea water desaltination.
The utility model, relative to prior art, has following advantage and effect:
(1) low-grade energy is utilized: because membrane type humidifier feedstock solution service temperature is generally lower than 80 DEG C, and membrane type humidifier, condensation dehumidifier are atmospheric operation, so low-grade energy can be utilized, as sun power, industrial gaseous waste spent liquor recovery etc. for system provides energy, thus realize heating the feed liquid entering membrane type humidifier, the feed liquid after heating can carry out humidification to air in membrane type humidifier.And existing method for desalting seawater is mainly in thermal evaporation and membrane reverse osmosis method, wherein hot method needs to carry out ebuillition of heated to seawater and evaporates in seawater surface, and efficiency is low, and fossil oil or power consumption large; Membrane reverse osmosis method needs lot of energy to provide high pressure for system equally.This device and method overcomes the dependence of desalting process to fossil oil and electric energy, achieves the effective utilization to low-grade energy, is conducive to energy-saving and emission-reduction and environment protection.
(2) capacity usage ratio is high: in existing sea water desalinating plant, high temperature seawater after concentrated directly discharges system, cause very large power loss, and this Plant arrangement form can adopt the recycle form of air and solution, from condensation dehumidifier and membrane type humidifier, after air and solution single also can be adopted to utilize, discharge the form of system respectively.When this Plant arrangement form is circulation form, feed liquid Yin Wendu after concentrated is higher can mix with a certain amount of feedstock solution after again flow back in membrane type humidifier and reuse, air after same dehumidification is because there being very high water capacity, so the humidification that again heats up also can be re-entered in membrane type humidifier, so, system can realize the circulation of air system and the circulation of solution system, avoids a large amount of losses of energy.When this Plant arrangement form is in line form, the warm air that recuperative heat exchanger can be utilized externally to arrange respectively and hot solution carry out heat recuperation, reduce energy consumption, improve capacity usage ratio.
(3) the water salt separation efficiency of seawater is improved: because this device does not adopt conventional solar energy sea water high temperature evaporation condensation method to obtain fresh water, but utilize membrane distillation principle in membrane type humidifier humidification and in condensation dehumidifier dehumidification seawater is desalinated, and the high selective penetrated property that film has and high membrane flux can improve sea water desaltination efficiency and produce water speed.
Accompanying drawing explanation
Fig. 1 is the utility model membrane type humidification dehumidification sea water desalinating plant structural representation.
Fig. 2 is the utility model membrane type humidification dehumidification sea water desalinating plant the second structural representation.
Fig. 3 is the third structural representation of the utility model membrane type humidification dehumidification sea water desalinating plant.
Embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1, 2.A kind of membrane type humidification of the utility model dehumidification sea water desalinating plant, comprises heating unit, membrane type humidifier 9, condensation dehumidifier 3;
The C air outlet 15 of membrane type humidifier 9 is connected with the H blast inlet 16 of condensation dehumidifier 3, and the G air outlet 17 of condensation dehumidifier 3 connects the A blast inlet 14 of membrane type humidifier 9 by blower fan 13;
The outlet of heating unit is connected with the B fluid inlet 8 of membrane type humidifier 9, and the D liquid outlet 10 of membrane type humidifier 9 connects the ingress interface 6 of heating unit by reflux pump 12;
Sea-water pump 1 exports the F fluid inlet 2 connecting condensation dehumidifier 3, and the E liquid outlet 4 of condensation dehumidifier 3 connects the ingress interface 6 of heating unit by mouth-piece 5;
Condensation dehumidifier 3 has fresh water collecting device 18, and fresh water collecting device 18 connects fresh water storage tank 19.
Described heating unit is solar heater 7 or electric heater 20.
The D liquid outlet 10 of described membrane type humidifier 9 is also provided with the branch line of a band valve 11.
As shown in Figure 1.Membrane type humidification dehumidification sea water desalinating plant realizes by following steps the method that seawater is desalinated:
Seawater is inputted the F fluid inlet 2 of condensation dehumidifier 3 by sea-water pump 1 and is heated by condensation dehumidifier 3, seawater after heating flows into solar heater 7 from the E liquid outlet 4 of condensation dehumidifier 3, solar heater 7 heats again to the seawater carrying out self-condensation dehumidifier 3, seawater after reheating enters membrane type humidifier 9 by B fluid inlet 8, seawater after reheating is divided into two branch roads after D liquid outlet 10 flows out membrane type humidifier 9, wherein a branch road is transmitted back to solar heater 7 through reflux pump 12, and another branch road discharges membrane type humidifier 9 through valve 11, air (low temperature) then enters membrane type humidifier 9 through A blast inlet 14 and carries out humidification, heat, humidification, condensation dehumidifier 3 is entered through H blast inlet 16 after heating, now the charging seawater of coming is carried to carry out thermal exchange in dehumidifier 3 with sea-water pump 1, make originally to be heated, the air themperature of humidification reduces, water capacity declines, the water being condensed out enters in the fresh water collecting device 18 of condensation dehumidifier 3 bottom after departing from air, then export and enter into fresh water storage tank 19, and seawater out raises due to temperature from condensation dehumidifier 3, then punish into two branch roads at mouth-piece 5, wherein a branch road is discharged outside condensation dehumidifier 3, the sea water mixing that ingress interface 6 place and reflux pump 12 are carried delivered to by another branch road, send to be afterwards heated in solar heater 7 temperature required, thus complete the circulation of seawater, realize sea water desaltination.
Because seawater is constantly concentrated in this plant running process, so need to discharge system through valve 11 from the higher concentration seawater of D liquid outlet 10 outflow.Condensation dehumidifier 3 achieves the preheating to solar heater 7 import seawater in working cycle, also supplements the seawer quality flow because there being a large amount of water vapour to be lost by membrane pore structure in membrane type humidifier 9 in seawater circulation process simultaneously.
As shown in Figure 3.Another kind of membrane type humidification dehumidification sea water desalinating plant, comprises heating unit, membrane type humidifier 9, condensation dehumidifier 3;
Described heating unit is heat pump heating system, and described heat pump heating system comprises condenser 24, refrigerant fluid storage tank 26, throttle expansion valve 27, vaporizer 29, compressor 31;
The B outlet 25 of described condenser 24 connects the refrigerant inlet 28 of refrigerant fluid storage tank 26, throttle expansion valve 27, vaporizer 29 successively; The refrigerant outlet 30 of vaporizer 29 connects the A import 23 of condenser 24 through compressor 31;
The C air outlet 15 of membrane type humidifier 9 is connected with the H blast inlet 16 of condensation dehumidifier 3, and the G air outlet 17 of condensation dehumidifier 3 connects the A blast inlet 14 of membrane type humidifier 9 by blower fan 13;
The D outlet 22 of condenser 24 is connected with the B fluid inlet 8 of membrane type humidifier 9, and the D liquid outlet 10 of membrane type humidifier 9 connects the ingress interface 6 of the C import 21 of condenser 24 by reflux pump 12;
The E liquid outlet 4 of condensation dehumidifier 3 connects the sea intake 32 of vaporizer 29 and the ingress interface 6 of condenser 24 respectively by mouth-piece 5; The seawer outlet 33 of vaporizer 29 connects the F fluid inlet 2 of condensation dehumidifier 3 by pump 34, the seawater output tube 35 of sea-water pump 1 connects the F fluid inlet 2 of condensation dehumidifier 3;
Described condensation dehumidifier 3 there is fresh water collecting device 18, fresh water collecting device 18 connects fresh water storage tank 19.
The D liquid outlet 10 of described membrane type humidifier 9 is also provided with the branch line of a band valve 11.
As in Fig. 3, after refrigerant fluid flows through throttle expansion valve 27 from refrigerant fluid storage tank 26, enter vaporizer 29 from refrigerant inlet 28, in vaporizer 29, the seawater that sea intake 32 place flows into is carried out to heat absorption and completes evaporative process, the refrigerant vapour generated flows out into compressor 31 from refrigerant outlet 30, high pressure steam after pressurization enters condenser 24 from A import 23, in condenser 24, heat release is carried out to C import 21 mouthfuls of seawater entered, realize liquefaction through condensed refrigerant vapour, and export 25 from B and flow back in refrigerant fluid storage tank 26.
As shown in Figure 3.This membrane type humidification dehumidification sea water desalinating plant realizes by following steps the method that seawater is desalinated:
The refrigerant fluid flowed out from the B outlet 25 of condenser 24 enters refrigerant fluid storage tank 26, after refrigerant fluid flows through throttle expansion valve 27 from refrigerant fluid storage tank 26, enter vaporizer 29 from refrigerant inlet 28, in vaporizer 29, the seawater that sea intake 32 place flows into is carried out to heat absorption and completes evaporative process, the refrigerant vapour generated flows out into compressor 31 from refrigerant outlet 30, steam (high pressure) after pressurization enters condenser 24 from A import 23, in condenser 24, heat release is carried out to the seawater that C import 21 enters, liquefaction is realized through condensed refrigerant vapour, and export 25 from B and flow back in refrigerant fluid storage tank 26, thus complete the circulation of refrigeration agent,
The C air outlet 15 of membrane type humidifier 9 is connected with the blast inlet 16 of condensation dehumidifier 3, inputs back in the A blast inlet 14 of membrane type humidifier 9 through G air outlet 17 air out by blower fan 13;
The D outlet 22 of condenser 24 is connected with the B fluid inlet 8 of membrane type humidifier 9; Seawater is divided into two branch roads after D liquid outlet 10 flows out membrane type humidifier 9, and wherein a branch road is transmitted back in the C sea intake 21 of condenser 24 through reflux pump 12, and another branch road discharges membrane type humidifier 9 through valve 11;
Seawater by sea-water pump 1 input condensation dehumidifier 3 F fluid inlet 2 and by being heated in condensation dehumidifier 3, seawater after heating flows out from the E liquid outlet 4 of condensation dehumidifier 3, two are punished at pipeline 5, wherein one enters vaporizer 29 from sea intake 32, flow out from seawer outlet 33 afterwards, the seawater carried at seawater output tube 35 place and sea-water pump 1 through pump 34 converges, enter in condenser 24 from C import 21 after another branch road and ingress interface 6 place converge and heat, again enter membrane type humidifier 9 by B fluid inlet 8 after D outlet 22 is flowed out after heating in condenser 24, thus complete the circulation of sea water system, realize sea water desaltination.
As mentioned above, the supply of this device energy can be solar heater (solar energy collector), electric heater, heat pump or the use that intercouples.The arrangement form of whole device can adopt the recycle form of air and solution, the form of direct outer row after air and solution single also can be adopted to utilize.When system layout form is circulation form, energy supply device can heat to air circulation system, also can heat to solution recycle system.When system layout form is in line form, the warm air that recuperative heat exchanger can be used externally to arrange respectively and hot solution carry out heat recuperation, and preheating is carried out to fresh feed air and solution, per-meate side also can be adopted to arrange, and the vacuum membrane distillation of vacuum pump comes implementation procedure strengthening and vapor permeation strengthening.Condensation dehumidifier has condensation dehumidification simultaneously, collects storage fresh water, to the effect of solution recycle system preheating.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from spirit of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (3)
1. a membrane type humidification dehumidification sea water desalinating plant, is characterized in that comprising heating unit, membrane type humidifier (9), condensation dehumidifier (3);
The C air outlet (15) of membrane type humidifier (9) is connected with the H blast inlet (16) of condensation dehumidifier (3), and the G air outlet (17) of condensation dehumidifier (3) connects the A blast inlet (14) of membrane type humidifier (9) by blower fan (13);
The outlet of heating unit is connected with the B fluid inlet (8) of membrane type humidifier (9), and the D liquid outlet (10) of membrane type humidifier (9) connects the ingress interface (6) of heating unit by reflux pump (12);
Sea-water pump (1) outlet connects the F fluid inlet (2) of condensation dehumidifier (3), and the E liquid outlet (4) of condensation dehumidifier (3) connects the ingress interface (6) of heating unit by mouth-piece (5);
Condensation dehumidifier (3) has fresh water collecting device (18), and fresh water collecting device (18) connects fresh water storage tank (19).
2. membrane type humidification dehumidification sea water desalinating plant according to claim 1, is characterized in that: described heating unit is solar heater (7) or electric heater (20).
3. membrane type humidification dehumidification sea water desalinating plant according to claim 1, is characterized in that: the D liquid outlet (10) of described membrane type humidifier (9) is also provided with the branch line of a band valve (11).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104803532A (en) * | 2015-04-14 | 2015-07-29 | 华南理工大学 | Seawater desalting device adopting membrane type humidification and dehumidification and seawater desalting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803532A (en) * | 2015-04-14 | 2015-07-29 | 华南理工大学 | Seawater desalting device adopting membrane type humidification and dehumidification and seawater desalting method |
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