CN105363348B - Distillation device and the membrane distillation system with the distillation device - Google Patents
Distillation device and the membrane distillation system with the distillation device Download PDFInfo
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- CN105363348B CN105363348B CN201510755355.6A CN201510755355A CN105363348B CN 105363348 B CN105363348 B CN 105363348B CN 201510755355 A CN201510755355 A CN 201510755355A CN 105363348 B CN105363348 B CN 105363348B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/366—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/14—Pressure control
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Abstract
The present invention provides a kind of distillation device and with the distillation device membrane distillation system.Wherein, which includes housing, is arranged at the in vivo hydrothermal solution storehouse of shell, cold liquid input storehouse, cold liquid output storehouse, condenser pipe, inner membrance and pressure regulating device；Wherein, cold liquid input storehouse is connected with cold liquid output storehouse by condenser pipe, also, condenser pipe is arranged in hydrothermal solution storehouse；Inner membrance is arranged in hydrothermal solution storehouse and is socketed on the outside of condenser pipe, and the gap between inner membrance and condenser pipe forms production aquaporin；Pressure regulating device is connected with production aquaporin, for adjusting the pressure in production aquaporin.The present invention is by adjusting the pressure in production aquaporin, so that form larger pressure differential between production aquaporin and hydrothermal solution storehouse, the steam in hydrothermal solution storehouse is promoted preferably to enter condensation in production aquaporin through inner membrance, increase the membrane flux of inner membrance, improve the efficiency of distillation device, it is ensured that the stable operation of distillation device.
Description
Technical field
The present invention relates to film distillation technology field, in particular to a kind of distillation device and with membrane distillation dress
The membrane distillation system put.
Background technology
Membrane distillation (MD) is the membrane separating process that membrane technology is combined with evaporation process, is one in new membrane separation technique
Kind, it can be operated at normal temperatures, have many advantages, such as that efficient, energy saving, simple process, small investment, pollution are small.
Existing gap field orientation device includes cold liquid input storehouse, cold liquid output storehouse, hydrothermal solution storehouse, production sump, condenser pipe
And inner mold tube.Wherein, hydrothermal solution storehouse and production sump may be contained between cold liquid input storehouse and cold liquid output storehouse, and hydrothermal solution storehouse is set
Between cold liquid input storehouse and production sump.Condenser pipe is arranged in hydrothermal solution storehouse and production sump, also, the first end of condenser pipe and cold liquid are defeated
It puts in storage and is connected, the second end of condenser pipe is connected with cold liquid output storehouse.Inner membrance is arranged in hydrothermal solution storehouse, the first end connection of inner membrance
Outer wall in cold liquid input storehouse, the second end of inner membrance is connected to the hydrothermal solution storehouse outer wall adjacent with producing sump, and inner membrance is socketed on
The outside of condenser pipe has pre-determined distance between inner membrance and the condenser pipe, the gap between inner membrance and the condenser pipe is formed
Produce aquaporin.Production aquaporin is connected with production sump.
Existing gap field orientation device operation principle：Cold liquid is passed through in cold liquid input storehouse, and condensed pipe is exported to cold
Liquid exports storehouse, is discharged cold liquid by cold liquid output storehouse.Liquid gasification in hydrothermal solution storehouse at inner membrance forms steam, in inner membrance two
Steam enters through inner membrance in production aquaporin under the promotion of side vapor pressure differential, and condenser pipe carries out the steam in production aquaporin cold
But so that steam is condensed into water, falls in production sump, is discharged by production sump, and the liquid in hydrothermal solution storehouse is hindered by inner membrance
Gear so that liquid can not penetrate inner membrance, realize the purpose of gas phase and liquid phase separation.
In general, the size of membrane flux is to weigh the important indicator of membrane distillation process quality during membrane distillation.In film
In the operational process of distillation, in gap field orientation device, since the steam of liquid in hydrothermal solution storehouse is through inner membrance, and liquid quilt
Inner membrance retains, and the concentration at intimal surface is caused to be higher than the concentration of main body of liquid in hydrothermal solution storehouse, the phenomenon that concentration polarization occurs, and
And the temperature at intimal surface is less than the temperature of main body of liquid in hydrothermal solution storehouse, the phenomenon that temperature polarization occurs, then due to hydrothermal solution storehouse
Contain the formation of impurity and intimal surface gel layer in interior liquid, these factors all easily lead to inner membrance and are contaminated, and cause
Membrane flux reduces, and reduces the efficiency of membrane distillation, affects the operation of membrane distillation.
The content of the invention
In consideration of it, the present invention proposes a kind of distillation device, it is intended to solve interior in distillation device in the prior art
Film is due to the problem of membrane flux caused by concentration polarization, temperature difference polarization and pollution is subject to reduce.The invention also provides a kind of tools
There is the membrane distillation system of the distillation device.
On one side, the present invention proposes a kind of distillation device, which includes：Housing is arranged in housing
Hydrothermal solution storehouse, cold liquid input storehouse, cold liquid output storehouse, condenser pipe, inner membrance and pressure regulating device；Wherein, cold liquid input storehouse and cold liquid are defeated
Export is connected by condenser pipe, also, condenser pipe is arranged in hydrothermal solution storehouse；Inner membrance is arranged in hydrothermal solution storehouse and is socketed on condenser pipe
Outside, the gap between inner membrance and condenser pipe form production aquaporin；Pressure regulating device is connected with production aquaporin, and water is produced for adjusting
Pressure in passage.
Further, in above-mentioned distillation device, pressure regulating device includes pressure regulating chamber；Wherein, pressure regulating chamber is with producing aquaporin phase
Connection；The position that housing corresponds to pressure regulating chamber offers the pressure regulating chamber connector being connected with regulator.
Further, in above-mentioned distillation device, hydrothermal solution storehouse is placed between cold liquid input storehouse and cold liquid output storehouse, and is adjusted
Pressure storehouse is arranged between cold liquid input storehouse and hydrothermal solution storehouse.
Further, in above-mentioned distillation device, inner membrance is connected close to one end of pressure regulating chamber with the bottom wall of pressure regulating chamber.
Further, in above-mentioned distillation device, pressure regulating device includes connecting tube；Wherein, one end of connecting tube and production water
Passage is connected, and the other end is placed in outside housing.
In the present embodiment, pressure regulating device is connected with production aquaporin, by adjusting the pressure in production aquaporin so that production water
Larger pressure differential is formed between passage and hydrothermal solution storehouse, the steam in hydrothermal solution storehouse is promoted preferably to enter production aquaporin through inner membrance
Interior condensation, the inner membrance membrane flux caused by the temperature difference is subject to polarize and pollute solved in distillation device in the prior art subtract
The problem of small, increases the membrane flux of inner membrance, improves the efficiency of distillation device, it is ensured that distillation device stablizes fortune
Row.
On the other hand, the invention also provides a kind of membrane distillation system, which includes above-mentioned membrane distillation
Device.
Further, above-mentioned membrane distillation system includes：Regulator is connected with the pressure regulating device in distillation device,
For adjusting the pressure in production aquaporin.
Further, above-mentioned membrane distillation system further includes：Heat-exchanger rig, for extract regulator from production aquaporin out
Gas and the liquid to be treated progress heat exchange for being inputted to hydrothermal solution storehouse.
Further, in above-mentioned membrane distillation system, heat-exchanger rig is First Heat Exchanger；The first passage of First Heat Exchanger
Entrance is connected with the outlet of the pressure regulating device in distillation device, the outlet of the first passage of First Heat Exchanger and regulator
It is connected；For receiving liquid to be treated, the second channel of First Heat Exchanger goes out the entrance of the second channel of First Heat Exchanger
Mouth is connected with the entrance in the hydrothermal solution storehouse in distillation device.
Further, above-mentioned membrane distillation system further includes：Second heat exchanger；Wherein, the first passage of the second heat exchanger
Entrance is used to receive the entrance of liquid to be treated, the outlet of the first passage of the second heat exchanger and the second channel of First Heat Exchanger
It is connected；The entrance of the second channel of second heat exchanger is connected with the outlet in cold liquid output storehouse, and the second of the second heat exchanger is logical
The outlet in road is connected with the entrance in cold liquid input storehouse.
Since distillation device has said effect, so the membrane distillation system with the distillation device is also with corresponding
Technique effect.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will be apparent understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the structure diagram of distillation device provided in an embodiment of the present invention；
Fig. 2 be distillation device provided in an embodiment of the present invention in A-A to structure diagram；
Fig. 3 is the structure diagram of membrane distillation system provided in an embodiment of the present invention.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the case where there is no conflict, embodiment in the present invention and
Feature in embodiment can be mutually combined.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Distillation device embodiment：
Referring to Fig. 1 and Fig. 2, the preferred structure of distillation device provided in an embodiment of the present invention is shown in figure.As schemed
Show, which includes：Housing 1 is arranged at the in vivo hydrothermal solution storehouse 2 of shell, cold liquid input storehouse 3, cold liquid output storehouse 4, condensation
Pipe 5, inner membrance 6 and pressure regulating device.
It will be understood by those skilled in the art that the cold liquid input storehouse 3 in distillation device passes through condenser pipe 5 with cold liquid output storehouse 4
It is connected, condenser pipe 5 and inner membrance 6 are arranged in hydrothermal solution storehouse 2.Inner membrance 6 is sheathed on the outside of condenser pipe 5, and inner membrance 6 and condensation
Pipe 5 has pre-determined distance, and the gap between inner membrance 6 and condenser pipe 5 forms production water channel 7.
Pressure regulating device is connected with production water channel 7, for adjusting the pressure in production aquaporin.Specifically, lead in hydrothermal solution storehouse 2
What is entered is the liquid to be treated of heat.Cold liquid is passed through in condenser pipe 5, cold liquid is used to that the steam in production water channel 7 cool down cold
But.Gap between the inner wall of inner membrance 6 and the outer wall of condenser pipe 5, which is formed, produces water channel 7, in the outer wall of inner membrance 6 and hydrothermal solution storehouse 2
Liquid is in contact.In the present embodiment, the pressure in production aquaporin can be reduced by pressure regulating device so that shape in production water channel 7
Into negative pressure, the membrane flux of increase inner membrance 6.
When it is implemented, inner membrance 6 can be hollow-fibre membrane, or tubular membrane.The material of inner membrance 6 can be
The hydrophobic materials such as PTFE, PVDF or PP.The membrane aperture of inner membrance 6 can be 0.1~0.5 μm, the porosity of film can be 60%~
Between 80%.
, it should be appreciated by those skilled in the art that distillation device can also include production sump 15, which is set for this
It is connected between hydrothermal solution storehouse 2 and cold liquid output storehouse 4, and with production water channel 7, it is cold for receiving the steam in production water channel 7
Condensate.Housing 1, which corresponds at the position of production sump 15, offers production sump outlet, for the steam condensate (SC) row that will be received
Go out.
During work, cold liquid is inputted through cold liquid input storehouse 3, is then exported storehouse 4 into cold liquid by condenser pipe 5, and is passed through cold
Outlet output on liquid output storehouse 4.Hot liquid to be treated generates steam in hydrothermal solution storehouse 2, and steam leads to through inner membrance 6 into production water
In road 7, under the action of the cold liquid in condenser pipe 5, steam is condensed into water.Pressure regulating device adjusts the pressure in production water channel 7, makes
The differing pressure obtained in the pressure and production water channel 7 in the hydrothermal solution storehouse 2 of inner membrance both sides is larger, and the steam in hydrothermal solution storehouse 2 is larger
Pressure differential under the action of preferably through inner membrance 6 into production water channel 7, so as to increase the membrane flux of inner membrance 6.
As can be seen that in the present embodiment, pressure regulating device is connected with production water channel 7, by adjusting the pressure in production water channel 7
Power so that form larger pressure differential between production water channel 7 and hydrothermal solution storehouse 2, promote the steam in hydrothermal solution storehouse 2 preferably through interior
For film 6 into producing in water channel 7, steam is condensed into water under the action of cold liquid in condenser pipe 5, solves membrane distillation in the prior art
Inner membrance 6 in device increases inner membrance due to the problem of membrane flux caused by concentration polarization, temperature difference polarization and pollution is subject to reduce
6 membrane flux improves the efficiency of distillation device, it is ensured that the stable operation of distillation device.
With continued reference to Fig. 1 and Fig. 2, in above-described embodiment, pressure regulating device can include pressure regulating chamber 8.Wherein, pressure regulating chamber 8 with
Production water channel 7 is connected, and the position that housing 1 corresponds to pressure regulating chamber offers pressure regulating chamber connector 9, and pressure regulating chamber connector 9 is used for
It is connected with regulator.Specifically, regulator is used to adjust the pressure in pressure regulating chamber 8, due to pressure regulating chamber 8 and production aquaporin
7 are connected, so, regulator not only adjusts the pressure in pressure regulating chamber 8, also adjusts the pressure in production water channel 7.Regulator
It can be decompressor.Further, regulator can be reduced by extracting the gas in pressure regulating chamber 8 in pressure regulating chamber 8
Pressure.
During work, the pressure in pressure regulating chamber 8 is adjusted in regulator so that and the pressure in pressure regulating chamber 8 changes,
Since pressure regulating chamber 8 is connected with production water channel 7, then in pressure regulating chamber 8 pressure variation so that the pressure also phase in production water channel 7
The variation answered, so that the pressure differential that the pressure in hydrothermal solution storehouse 2 is larger with producing the pressure initiation in water channel 7, promotes hydrothermal solution
Steam in storehouse 2 preferably enters production water channel 7 under the action of pressure differential through inner membrance 6.
As can be seen that in the present embodiment, by setting pressure regulating chamber 8, adjusting the pressure in pressure regulating chamber and then having adjusted production water
Pressure in passage 7, it is simple in structure, it is easily operated.
With continued reference to Fig. 1 and Fig. 2, in above-described embodiment, hydrothermal solution storehouse 2 be arranged at cold liquid input storehouse 3 and cold liquid output storehouse 4 it
Between, also, pressure regulating chamber 8 is arranged between cold liquid input storehouse 3 and hydrothermal solution storehouse 2, convenient for being adjusted to the pressure in production water channel 7
Section avoids the condensed water of steam in production water channel 7 to pressure controlled influence, it is ensured that the stable operation of pressure regulating chamber 8.
When it is implemented, a kind of embodiment connected between pressure regulating chamber 8 and production water channel 7 is：One end of inner membrance 6 can be with
It is connected to the bottom wall in cold liquid input storehouse 3（The wall surface of lower section shown in FIG. 1）, inner membrance 6 is arranged in pressure regulating chamber 8 and hydrothermal solution storehouse 2, and
It can be through hole that position on inner membrance 6 corresponding to pressure regulating chamber 8, which is equipped with connection pressure regulating chamber 8 with producing the device of water channel 7, the device,
The pressure in production water channel 7 is adjusted convenient for pressure regulating chamber 8.
It should be noted that when it is implemented, hydrothermal solution storehouse 2 with production water channel 7, pressure regulating chamber 8 is what is isolated, do not connect mutually
It is logical, and pressure regulating chamber 8 is only connected with production water channel 7, to ensure the variation of pressure in pressure regulating chamber 8 and then influence production water channel 7
The variation of interior pressure avoids the liquid to be treated in hydrothermal solution storehouse 2 and penetrates into pressure regulating chamber 8 and penetrate into production water channel 7 through inner membrance 6
The interior pressure regulation for influencing pressure regulating chamber 8 to production water channel 7.
With continued reference to Fig. 1 and Fig. 2, the another embodiment connected between pressure regulating chamber 8 and production water channel 7 is：Inner membrance 6 leans on
One end of nearly pressure regulating chamber 8 can also be with the bottom wall of pressure regulating chamber 8（The wall surface of lower section shown in FIG. 1）It is connected.Specifically, inner membrance 6
One end away from pressure regulating chamber 8 is connected with production sump 15, then produces the steam condensate (SC) in water channel 7 and input to production sump 15.
Pressure regulating chamber 8 and the liquid in hydrothermal solution storehouse 2 are isolated by the bottom wall of pressure regulating chamber 8, can prevent the pending liquid of the heat in hydrothermal solution storehouse 2
Body enters in pressure regulating chamber 8.Inner membrance 6 is only arranged in hydrothermal solution storehouse 2, and the bottom wall of pressure regulating chamber 8 offers perforate, one end connection of inner membrance 6
In perforate so that production water channel 7 is connected with pressure regulating chamber 8, and the liquid to be treated of the heat in hydrothermal solution storehouse 2 cannot be introduced into pressure regulation
Storehouse 8.
As can be seen that in the present embodiment, inner membrance 6 is connected to the bottom wall of pressure regulating chamber 8, it is ensured that production water channel 7 and pressure regulating chamber 8
Between connection, and the space connected between the two is expanded, convenient for the adjusting of pressure in pressure regulating chamber 8 and production water channel 7, knot
Structure is simple, easy to implement.
With continued reference to Fig. 1 and Fig. 2, pressure adjusting structure can also include connecting tube in addition to it can include pressure regulating chamber 8.Wherein,
One end of the connecting tube is connected with production water channel 7, and the other end is placed in outside housing 1.Specifically, connecting tube is arranged in housing 1, and
And one end that connecting tube is placed in outside housing 1 is connected with regulator, regulator is adjusted by connecting tube in production water channel 7
Pressure so that pressure in hydrothermal solution storehouse 2 pressure differential larger with the pressure initiation in production water channel 7.
As can be seen that in the present embodiment, regulator adjusts the pressure in production water channel 7 by connecting tube, simple in structure,
It is easily operated.
In conclusion the present embodiment, pressure regulating device is connected with production water channel 7, by the pressure for adjusting in production aquaporin 7
Power so that form larger pressure differential between production water channel 7 and hydrothermal solution storehouse 2, promote the steam in hydrothermal solution storehouse preferably through interior
Film 6 increases the membrane flux of inner membrance 6 into condensation in water channel 7 is produced, and improves the efficiency of distillation device, it is ensured that film steams
The stable operation of distillation unit.
Membrane distillation system embodiment：
The embodiment of the present invention also proposed a kind of membrane distillation system, which includes above-mentioned distillation device.
Wherein, the specific implementation process of distillation device is referring to above description, and details are not described herein for the present embodiment.Due to membrane distillation
Device has said effect, so the membrane distillation system with the distillation device is also with corresponding technique effect.
Referring to Fig. 3, Fig. 3 is the structure diagram of membrane distillation system provided in an embodiment of the present invention.As shown in the figure, the film steams
The system of evaporating can also include regulator 10.The regulator 10 is connected with the pressure regulating device in distillation device, for adjusting
Save the pressure in pressure regulating device.When it is implemented, regulator 10 can be connected by the pressure regulating chamber on the housing 1 of distillation device
Interface 9 is connected with the pressure regulating chamber 8 in distillation device, can also be connected with the connecting tube in distillation device.Pressure regulation fills
It can be vacuum pump to put 10, and the gas in pressure regulating device is extracted by vacuum pump, to reduce the pressure in pressure regulating device, due to adjusting
Press mechanism is connected with production water channel 7, then vacuum pump can also extract the gas and steam in production water channel 7, to reduce production water
Pressure in passage 7 so that hydrothermal solution storehouse 2 forms pressure differential with production water channel 7, increases the membrane flux of inner membrance 6.
It should be noted that when it is implemented, regulator 10 or it is well-known to those skilled in the art can be with
Realize other devices for adjusting pressure purpose, the present embodiment does not do this any restriction.
With continued reference to Fig. 3, as shown in the figure, in above-described embodiment, which can also include water tank 12, the storage
Water pot 12 is connected with regulator 10, for storing the condensed water for the steam that regulator 10 is extracted out out of production water channel 7, this
Sample convenient for the steam condensate (SC) is recycled, improves the utilization rate of the energy.Preferably, regulator 10 passes through water storage
Tank 12 is connected with the outlet of pressure regulating device, and specifically, regulator 10 is by water tank 12 and pressure regulating chamber connector 9 or is connected
Pipe is connected.
With continued reference to Fig. 3, in the various embodiments described above, which can also include heat-exchanger rig.The heat-exchanger rig
For the gas that regulator 10 is extracted out out of production water channel 7 to be carried out heat with the liquid to be treated for being used to input to hydrothermal solution storehouse 2
It exchanges.Specifically, the gas that pressure regulating device is extracted out by production water channel 7 passes through to penetrate inner membrance 6 by hydrothermal solution storehouse 2 in production water channel 7
Steam, since there is steam certain temperature to need cooling down, and the liquid to be treated that is inputted into hydrothermal solution storehouse 2 needs plus
Heat heating in hydrothermal solution storehouse 2 preferably to generate steam, and therefore, the steam produced in water channel 7 is carried out with liquid to be treated
Heat exchange so that the temperature reduction of steam is arranged or exported to water tank 12 outside after being condensed into water, and the temperature of liquid to be treated
In rise input to hydrothermal solution storehouse 2.
As can be seen that in the present embodiment, pressure regulating device from the gas of production water channel 7 extraction and is used for heat by heat-exchanger rig
The liquid to be treated that liquid storehouse 2 inputs carries out heat exchange, takes full advantage of the heat of the gas of production water channel 7 extraction, improves film
The heat recovery rate of Distallation systm, reduces the loss of heat in membrane distillation system.
With continued reference to Fig. 3, as shown in the figure, in above-described embodiment, heat-exchanger rig can be First Heat Exchanger 11, and first exchanges heat
The entrance 111 of the first passage of device is connected with the outlet of the pressure regulating device in distillation device, and the first of First Heat Exchanger is logical
The outlet 112 in road is connected with regulator 10, and the entrance 113 of the second channel of First Heat Exchanger is used to receive pending liquid
Body, the outlet 114 of the second channel of First Heat Exchanger are connected with the entrance in the hydrothermal solution storehouse 2 in distillation device, then first change
The liquid to be treated in the gas and second channel by pressure regulating device output in the first passage of hot device carries out heat exchange.Specifically
Ground, the entrance 111 of First Heat Exchanger first passage are connected with the pressure regulating chamber connector 9 in distillation device.First Heat Exchanger
The outlet 112 of first passage be connected by water tank 12 with regulator 10.
It should be appreciated by those skilled in the art that the membrane distillation system can also include hydrothermal solution storage tank 18, hydrothermal solution storage tank 18 is set
It is placed between the outlet 114 of the second channel of First Heat Exchanger and the entrance in hydrothermal solution storehouse 2, after hydrothermal solution storage tank 18 is for storing heating
Liquid to be treated, and into hydrothermal solution storehouse 2 input heating after liquid to be treated.
During work, regulator 10 extracts the gas in pressure regulating chamber 8 and in production water channel 7, gas by pressure regulating chamber connector 9
The entrance 111 for the first passage that body passes through First Heat Exchanger enters in First Heat Exchanger 11, waits cooling down；Liquid to be treated
Entered by the second channel entrance 113 of First Heat Exchanger in First Heat Exchanger 11, wait heat exchange heating.In First Heat Exchanger 11
Interior, gas exchanges heat with liquid to be treated so that the temperature reduction of gas is discharged after being condensed into water, the temperature of liquid to be treated
In rise input to hydrothermal solution storehouse 2.
As can be seen that in the present embodiment, heat-exchanger rig is First Heat Exchanger, simple in structure, easy to operate.
With continued reference to Fig. 3, as shown in the figure, in the various embodiments described above, membrane distillation system can also include the second heat exchanger 13,
Wherein, for receiving liquid to be treated, the first passage of the second heat exchanger goes out the entrance 131 of the first passage of the second heat exchanger
Mouth 132 is connected with the entrance 113 of the second channel of First Heat Exchanger；The entrance 133 of the second channel of second heat exchanger with it is cold
The outlet in liquid output storehouse 4 is connected, and the outlet 134 of the second channel of the second heat exchanger is connected with the entrance in cold liquid input storehouse 3,
The cold liquid that then the cold liquid output storehouse 4 in the liquid to be treated and second channel in the first passage of the second heat exchanger exports carries out heat
It exchanges.
During work, liquid to be treated is inputted by the entrance 131 of the first passage of the second heat exchanger to the second heat exchanger 13
In first passage, heat exchange heating is waited；The cold liquid that cold liquid output storehouse 4 exports with the steam in production water channel 7 due to exchanging heat
So cold liquid has certain temperature, then the cold liquid is inputted to the second channel of the second heat exchanger 13, waits heat exchange drop
Temperature.In the second heat exchanger 13, liquid to be treated carries out heat exchange with the cold liquid with certain temperature, after liquid to be treated heat exchange
Input is to hydrothermal solution storehouse 2 after continuing heat exchange heating in temperature rise input to First Heat Exchanger 11, and temperature drops after cold liquid heat exchange
Continue and the steam heat-exchanging in production water channel 7 in low input to cold liquid input storehouse 3.
It should be noted that First Heat Exchanger 11 can be to be arranged in series with the second heat exchanger 13, or parallel connection is set
It puts, when it is implemented, can be determined according to actual conditions, the present embodiment does not do this any restrictions.But the present embodiment be with
11 and second heat exchanger 13 of First Heat Exchanger, which is arranged in series, to be introduced.
It should be appreciated by those skilled in the art that cold liquid storage device 19 can also be included in membrane distillation system, cold liquid output
The cold liquid that storehouse 4 exports is exported after heat exchange is carried out in the second heat exchanger 13 by the outlet 134 of the second channel of the second heat exchanger
It is stored in cold liquid storage storage device 19, cold liquid storage device 19 can also be with cold liquid input storehouse 3 in distillation device
Entrance is connected, and the cold liquid of storage is exported to cold liquid input storehouse 3 so that cold liquid is recycled.When it is implemented, it is
Ensure that the temperature of the cold liquid inputted in cold liquid input storehouse 3 reaches default low temperature, can the outlet of cold liquid storage device 19 with
Refrigerating plant 17 is set between the entrance in cold liquid input storehouse 3, which is used to carry out cooling down to cold liquid.It is specific real
Shi Shi, default low temperature can determine that the present embodiment does not do this any restrictions according to actual conditions.
With continued reference to Fig. 3, in the various embodiments described above, membrane distillation system can also include preheater 14, wherein, preheater 14
It can be arranged between the outlet 114 of the second channel of First Heat Exchanger and the entrance in hydrothermal solution storehouse 2, first can also be arranged at and changed
Between hot 11 and second heat exchanger 13 of device, when it is implemented, can be determined according to actual conditions, the present embodiment does not appoint this
What is limited.
With continued reference to Fig. 3, as shown in the figure, in the various embodiments described above, membrane distillation system can also include：Water storage tank 16 is produced,
Production water storage tank 16 will produce the steam in sump 15 for being connected with the production sump outlet of the production sump 15 in distillation device
Condensing hot air furnace.
It should be noted that it should be appreciated by those skilled in the art that membrane distillation system can also include dense hydrothermal solution storage tank 20,
The dense hydrothermal solution storage tank 20 is connected with the outlet in hydrothermal solution storehouse 2, for storing the liquid after the processing of the output of hydrothermal solution storehouse 2.Film steams
Evaporate preheater 14, refrigerating plant 17, hydrothermal solution storage tank 18, cold liquid storage device 19, production water storage tank 16 and the storage of dense hydrothermal solution in system
Tank 20 is well known to those skilled in the art, therefore does not repeat.
In conclusion in the present embodiment, by adjusting the pressure in production water channel 7 in distillation device so that production water leads to
Larger pressure differential is formed between road 7 and hydrothermal solution storehouse 2, the steam in hydrothermal solution storehouse 2 is promoted preferably to lead to through inner membrance 6 into production water
Condensation in road 7 increases the membrane flux of inner membrance 6, improves the efficiency of distillation device；In addition, the heat exchange in membrane distillation system
The gas of pressure regulating device from production water channel 7 extraction is carried out heat exchange by device with the liquid to be treated for being used to input to hydrothermal solution storehouse 2,
The heat of the gas in production water channel 7 is taken full advantage of, the heat recovery rate of membrane distillation system is improved, reduces membrane distillation system
The loss of heat in system.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (8)
1. a kind of distillation device, which is characterized in that including：Housing (1) is arranged at the in vivo hydrothermal solution storehouse (2) of the shell, cold liquid
Input storehouse (3), cold liquid output storehouse (4), condenser pipe (5), inner membrance (6) and pressure regulating device；Wherein,
Cold liquid input storehouse (3) is connected with cold liquid output storehouse (4) by the condenser pipe (5), also, the condensation
Pipe (5) is arranged in the hydrothermal solution storehouse (2)；
The inner membrance (6) is arranged in the hydrothermal solution storehouse (2) and is socketed on the outside of the condenser pipe, the inner membrance (6) with it is described
Gap between condenser pipe (5) forms production aquaporin (7)；
The pressure regulating device is connected with the production aquaporin (7), for adjusting the pressure in the production aquaporin；
The pressure regulating device includes pressure regulating chamber (8)；Wherein,
The pressure regulating chamber (8) is connected with the production aquaporin (7)；
The position that the housing (1) corresponds to the pressure regulating chamber offers the pressure regulating chamber being connected with regulator (10) company
Interface (9)；
The inner membrance (6) is connected close to one end of the pressure regulating chamber (8) with the bottom wall of the pressure regulating chamber (8).
2. distillation device according to claim 1, which is characterized in that the hydrothermal solution storehouse (2) is placed in the cold liquid input
Between storehouse (3) and cold liquid output storehouse (4), and the pressure regulating chamber (8) is arranged at cold liquid input storehouse (3) and the heat
Between liquid storehouse (2).
3. distillation device according to claim 1, which is characterized in that the pressure regulating device includes connecting tube；Wherein,
One end of the connecting tube is connected with the production aquaporin (7), and the other end is placed in the housing (1) outside.
4. a kind of membrane distillation system, which is characterized in that including distillation device as claimed any one in claims 1 to 3.
5. membrane distillation system according to claim 4, which is characterized in that further include：
Regulator (10) is connected with the pressure regulating device in the distillation device, for adjusting the production aquaporin
(7) pressure in.
6. membrane distillation system according to claim 5, which is characterized in that further include：
Heat-exchanger rig, for from the gas of production aquaporin (7) extraction and being used for the regulator (10) to the heat
The liquid to be treated of liquid storehouse (2) input carries out heat exchange.
7. membrane distillation system according to claim 6, which is characterized in that the heat-exchanger rig is First Heat Exchanger (11)；
Wherein,
The outlet of the entrance of the first passage of the First Heat Exchanger (11) and the pressure regulating device in the distillation device
It is connected, the outlet of the first passage of the First Heat Exchanger (11) is connected with the regulator (10)；
The entrance of the second channel of the First Heat Exchanger (11) is used to receive liquid to be treated, the First Heat Exchanger (11)
The outlet of second channel is connected with the entrance of the hydrothermal solution storehouse (2) in the distillation device.
8. membrane distillation system according to claim 7, which is characterized in that further include：Second heat exchanger (13)；Wherein,
The entrance of the first passage of second heat exchanger (13) is used to receive liquid to be treated, second heat exchanger (13)
The outlet of first passage is connected with the entrance of the second channel of the First Heat Exchanger (11)；
The entrance of the second channel of second heat exchanger (13) is connected with the outlet of cold liquid output storehouse (4), and described the
The outlet of the second channel of two heat exchangers (13) is connected with the entrance of cold liquid input storehouse (3).
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| CN106215702A (en) * | 2016-09-12 | 2016-12-14 | 天津沃驰科技有限公司 | A kind of tubular type air gap membrane distillation assembly and distillating method |
| US10596521B2 (en) | 2018-03-27 | 2020-03-24 | King Fahd University Of Petroleum And Minerals | Water gap membrane distillation module with a circulating line |
| CN115259287A (en) * | 2022-09-03 | 2022-11-01 | 南华大学 | High-yield tubular membrane distillation membrane device and wastewater concentration method |
| CN115259286A (en) * | 2022-09-03 | 2022-11-01 | 南华大学 | Low-energy-consumption high-efficiency tubular membrane distillation system |
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| DE10321146A1 (en) * | 2003-05-12 | 2004-12-02 | Clean Water Gesellschaft für Wasseraufbereitungstechnik mbH | Method and device for water purification, in particular water desalination |
| EP1925355A1 (en) * | 2006-10-31 | 2008-05-28 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Membrane distillation method for the purification of a liquid |
| JP2011200770A (en) * | 2010-03-25 | 2011-10-13 | Sumitomo Electric Ind Ltd | Porous membrane for membrane distillation, module for membrane distillation, and membrane distillation type water production system |
| EP2606953B1 (en) * | 2011-12-23 | 2015-03-18 | Aquaver B.V. | Membrane distillation system, method of starting such a system and use thereof |
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| EP3046659B1 (en) * | 2013-09-18 | 2020-05-20 | Chemetics Inc. | Use of a hollow fibre membrane module with improved fluid flow distribution for osmotic membrane distillation |
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