CN105233695B - Distillation device and membrane distillation system - Google Patents
Distillation device and membrane distillation system Download PDFInfo
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- CN105233695B CN105233695B CN201510715375.0A CN201510715375A CN105233695B CN 105233695 B CN105233695 B CN 105233695B CN 201510715375 A CN201510715375 A CN 201510715375A CN 105233695 B CN105233695 B CN 105233695B
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- membrane module
- woven hose
- distillation device
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Abstract
The invention provides a kind of distillation device and membrane distillation system.Wherein, distillation device includes：Membrane module and at least three groups infusion sets；Wherein, axial direction of the infusion set described in each group along the membrane module is sequentially connected to the membrane module, for being inputted and/or output liquid to the membrane module.The present invention passes through to increasing the number of material liquid entrance in membrane module, change the position imported and exported, operating room uses the switching between different import and export, enhance turbulence intensity of the feeding liquid in membrane module, reduce and eliminate the concentration polarization phenomenon of film silk outer surface feed liquid, the temperature difference polarization phenomena of film silk both sides are reduced and eliminated, film silk inner vapor productivity ratio is improved, adds membrane module antifouling property and service life.
Description
Technical field
The present invention relates to water-treatment technology field, in particular to a kind of distillation device and membrane distillation system.
Background technology
Membrane distillation (Membrane distillation, MD) process be membrane technology is combined with Conventional espresso technology and
A kind of new desalination desalination technology of appearance.Compared with conventional distil-lation (distillation), MD operation temperature is low, typically
Operated at a temperature of 70 DEG C or so, without solution is heated into boiling, and disengagement area is big, the vapor space is small, thus its energy
Enough remove the salinity of higher concentration and with higher salt rejection rate.In general, carrying out above-mentioned membrane distillation mistake in membrane module
Journey, membrane module generally comprises housing, the cover plate and bottom plate that are connected to housing and many hollow membrane tubes；Wherein, housing, cover plate
Enclosed with bottom plate and be set as a space, membrane tube is placed in the space, also, the two ends of membrane tube are connected respectively at cover plate with bottom plate, bottom
The water in the brine waste in water storage cavity, housing can be offered in plate to be infiltrated through through the tube wall of membrane tube in membrane tube, and is assembled
In water chamber in bottom plate, exported by the delivery port in water chamber.At present, membrane distillation used for microporous hydrophobic membrane,
Based on the mechanism of mass transfer of the microporous hydrophobic membrane used in membrane distillation, the contamination resistance of membrane distillation is stronger, but also inevitable landform
Into fouling membrane, the pollution of microporous hydrophobic membrane used in membrane distillation is mainly to pollute relatively fewer in film surface pollution, fenestra.With infiltration vapour
Change process is the same, and membrane distillation is the process that heat and quality are transmitted simultaneously, is the membrane process for having phase transformation, and mass transfer force is film two
Side passes through the steam pressure difference of component, but the condition of work due to existing distillation device is relative with environment stable（Including feeding liquid
Flow, concentration and temperature and assembly operating pressure etc.）, relative stable state can be formed by running a period of time caudacoria component internal,
And then occur that the outer surface fluid concentrations of concentration extreme difference, i.e. film are far longer than the concentration of feed liquid around, cause membrane flux to be badly in need of
Decline, even result in film blocking.In addition, can also produce temperature extreme difference phenomenon, i.e., the temperature difference between liquid in housing compared with
Greatly.The common method for solving concentration extreme difference and temperature extreme difference at present is backwash, i.e., by after the liquid in housing all discharge, lead to
Cross inlet and clear water is inputted into housing, the inside of housing is backwashed by clear water.As can be seen that being backwashed
When, it is necessary to make distillation device be stopped, the normal production of influence or test.Further, since the pressure of this kind of water for cleaning
It is not high, the crystal or incrustation scale formed in housing is difficult to remove, the membrane tube surface of especially dead angle part is even more difficult
Obtained with cleaning, but if the pressure of increase clear water, membrane tube may be caused in itself again to damage.
The content of the invention
In consideration of it, the present invention proposes a kind of distillation device, it is intended to which solution is offseted except dense in distillation device at present
The problem of spending extreme difference and not ideal enough temperature extreme difference effect.The invention also provides a kind of membrane distillation with the distillation device
System.
On one side, the present invention proposes a kind of distillation device, and the device includes：Membrane module and at least three groups transfusion groups
Part；Wherein, axial direction of the infusion set described in each group along the membrane module is sequentially connected to the membrane module, for the film group
Part is inputted and/or output liquid.
Further, in above-mentioned distillation device, infusion set described in every group at least includes two woven hoses, and each described
Woven hose is circumferentially distributed along the membrane module.
Further, in above-mentioned distillation device, each woven hose in infusion set described in every group is along the film group
The circumference of part is uniformly distributed.
Further, in above-mentioned distillation device, the woven hose is column.
Further, in above-mentioned distillation device, described woven hose one end bore is more than other end bore.
Further, in above-mentioned distillation device, the larger one end of the woven hose bore is placed in the membrane module；
Or, described less one end of woven hose bore is placed in the membrane module.
Further, in above-mentioned distillation device, the woven hose is bend pipe.
Further, in above-mentioned distillation device, each infusion set includes a woven hose, each transfusion
Guan Jun includes being used for the straight length of feed liquor and is used to the ring segment of liquid, and the ring segment is placed in the membrane module, the ring
The side wall of shape section offers liquid outlet.
Further, in above-mentioned distillation device, the axis direction of each liquid outlet towards the membrane module is opened up.
As can be seen that the present invention to increasing the number of material liquid entrance in membrane module by changing the inlet of membrane module
With the position of liquid outlet, each inlet and liquid outlet are switched over during work, and then change the flowing side of liquid in membrane module
To turbulence intensity of the enhancing feeding liquid in membrane module reduces and eliminated the concentration polarization phenomenon of film silk outer surface feed liquid, drop
Temperature difference polarization phenomena that are low and eliminating film silk both sides, improve film silk inner vapor productivity ratio, add membrane module resistance tocrocking
Energy and service life.
On the other hand, the invention also provides a kind of membrane distillation system, it is provided with any of the above-described kind of distillation device.
Because distillation device has the effect above, so the membrane distillation system with the distillation device also has accordingly
Technique effect.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the structural representation for the distillation device that the embodiment of the present invention is proposed；
Fig. 2 is the layout drawing of one group of infusion tube set in the distillation device that the embodiment of the present invention is proposed；
In the distillation device that Fig. 3 proposes for the embodiment of the present invention, the structural representation of woven hose；
In the distillation device that Fig. 4 proposes for the embodiment of the present invention, the another structural representation of woven hose；
In the distillation device that Fig. 5 proposes for the embodiment of the present invention, the another structural representation of woven hose；
In the distillation device that Fig. 6 proposes for the embodiment of the present invention, the another structural representation of woven hose；
In the distillation device that Fig. 7 proposes for the embodiment of the present invention, the another structural representation of woven hose；
Fig. 8 is the working state schematic representation of the woven hose shown in Fig. 7；
Fig. 9 is the structural representation of membrane distillation system provided in an embodiment of the present invention；
Figure 10 is membrane distillation system provided in an embodiment of the present invention, the state diagram that one group of woven hose is infused into membrane module.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
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
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention 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 for the distillation device that the present embodiment is provided is shown in figure.As illustrated, should
Device includes membrane module 1 and at least three groups infusion sets.Wherein, at least three groups infusion sets connect successively along the axial direction of membrane module 1
Membrane module 1 is connected to, for input and/or output liquid into membrane module 1.
It will be appreciated by those skilled in the art that should be provided with inside membrane module 1 on film silk 2, membrane module 1 should be provided with and film
The water storage cavity that the internal cavities of silk 2 are connected（Do not marked in figure）, the water in liquid to be treated in membrane module 1 passes through film silk 2
In the internal cavities for infiltrating through film silk 2, and enter in water storage cavity, discharged finally by the outlet pipe in water storage cavity.
The present embodiment is described further exemplified by three groups of infusion sets are installed on membrane module 1 below.
As shown in Figure 1 and Figure 2, the first infusion set, the second infusion set and the 3rd transfusion are separately installed with membrane module 1
Component.Wherein, the first infusion set includes three woven hoses, respectively the first woven hose a-1, the second woven hose a-2 and the 3rd
Woven hose a-3；Second infusion set also includes three woven hoses, respectively the 4th woven hose b-1, the 5th woven hose b-2 and the
Six woven hoses（Not shown in figure）；3rd infusion set also includes three woven hoses, respectively the 7th woven hose c-1, the 8th defeated
Liquid pipe c-2 and the 9th woven hose（Not shown in figure）.Three groups of infusion sets are distributed along the axial direction of membrane module 1, every group of infusion set
In each woven hose can be along the circumferentially distributed of membrane module 1.
During work, the 4th woven hose b-1, the 5th woven hose b-2 and the 6th woven hose can be first closed, first is opened and infuses
Pipe a-1, the second woven hose a-2 and the 3rd woven hose a-3 and the 7th woven hose c-1, the 8th woven hose c-2 and the 9th woven hose,
Feeding liquid is entered in membrane module 1 by the first woven hose a-1, the second woven hose a-2 and the 3rd woven hose respectively, the steam of generation
2 it is pooled in water storage cavity, and is exported by crossing vapor outlet port 3 through film silk, concentrate passes through the 7th woven hose c-1, the 8th defeated
Liquid pipe c-2 and the outlet of the 9th woven hose are exported to outside membrane module.Work after a period of time, be switched into according to corresponding monitoring data
Water outlet woven hose, inlet switches to the 7th woven hose c-1, the 8th woven hose c-2 and the 9th woven hose, and delivery port switches to
One woven hose a-1, the second woven hose a-2 and the 3rd woven hose a-3, now, feeding liquid pass through the 7th woven hose c-1, respectively
Eight woven hose c-2 and the 9th woven hose are entered in membrane module, concentrate by the first woven hose a-1, the second woven hose a-2 and
3rd woven hose a-3 is discharged to outside membrane module.Work after a period of time, infused further according to corresponding monitoring data switching Inlet and outlet water
Pipe, opens the 4th woven hose b-1, the 5th woven hose b-2 and the 6th woven hose, and water inlet switches to the 4th woven hose b-1, the 5th
Woven hose b-2 and the 6th woven hose b-3, delivery port switches to the first woven hose a-1, the second woven hose a-2 and the 3rd woven hose
A-3 and woven hose c-1, woven hose c-2 and woven hose c-3.
It should be noted that during work, each infusion set can be cut according to actual needs, for example, one group can be selected
Infusion set is as feed liquor component, and one group of infusion set can also select two groups of two groups of infusion set conducts as liquid component is gone out
Feed liquor component, or two groups of infusion sets can be determined as liquid component, specifically chosen mode is gone out according to actual conditions.
It should be noted that in practical work process, when can judge the switching of intake-outlet by observing data below
Between：Output flow, the electrical conductivity of fresh water, electrical conductivity of feeding liquid of fresh water etc., i.e., fresh water production outflow ought occur and start reduction,
Fresh water electrical conductivity starts increase, switches immediately when feeding liquid electrical conductivity is close to one or more kinds of phenomenons such as feed liquid crystallization numerical value
Intake-outlet, certainly, when it is implemented, switching time, the present embodiment pair can also be determined by observing other processing datas
It does not do any restriction.
As can be seen that the present embodiment to increasing the number of material liquid entrance in membrane module by changing the feed liquor of membrane module
The position of mouth and liquid outlet, is switched over during work to each inlet and liquid outlet, and then changes the flowing of liquid in membrane module
Direction, turbulence intensity of the enhancing feeding liquid in membrane module reduces and eliminated the concentration polarization phenomenon of film silk outer surface feed liquid,
The temperature difference polarization phenomena of film silk both sides are reduced and eliminated, film silk inner vapor productivity ratio is improved, adds membrane module antipollution
Performance and used life.
Referring to Fig. 2, in above-described embodiment, every group of infusion set at least includes two woven hoses, and each woven hose is along film group
Part 1 it is circumferentially distributed.
When it is implemented, above-mentioned each woven hose can be open column shape, such as cylindrical tube, as shown in Figure 3.
Woven hose can also be more than the woven hose of other end bore for one end bore, as shown in Figures 4 to 6, specific to install
When, the larger one end of woven hose bore can be placed in membrane module 1, the less one end of woven hose bore can also be placed in film
In component 1；When one end that bore is larger is placed in membrane module 1, the pressure of the liquid into membrane module 1 can be reduced,
When the less one end of bore is placed in membrane module 1, the pressure of the liquid into membrane module 1 can be increased.Specific implementation
When, above-mentioned woven hose can be straight tube, or bend pipe.
Referring to Fig. 7 and Fig. 8, the infusion set in the various embodiments described above includes a woven hose, and each woven hose is wrapped
Include for feed liquor straight length A and be used to the ring segment B of liquid, ring segment B is placed in the inside of membrane module 1, ring segment B side wall
Liquid outlet is offered, straight length A is extended to outside the housing of membrane module 1.During work, according to the direction of arrow shown in Fig. 7 to transfusion
Pipe conveys liquid.Ring segment B in the present embodiment can be such that liquid is equably conveyed into membrane module 1.Preferably, each liquid outlet
Axis direction towards membrane module 1 is set.
To sum up, the present embodiment is by increasing the number of material liquid entrance in membrane module, changing the position imported and exported, work
Room uses the switching between different import and export, enhances turbulence intensity of the feeding liquid in membrane module, reduces and eliminate film
The concentration polarization phenomenon of silk outer surface feed liquid.
Membrane distillation system embodiment：
The present embodiment proposes a kind of membrane distillation system, and the system is provided with any of the above-described kind of distillation device.Wherein, film
The specific implementation process of distilling apparatus will not be repeated here referring to described above, the present embodiment.
Because distillation device has the effect above, so the system with the distillation device also has corresponding technology
Effect.
With reference to Fig. 9, Figure 10, the membrane distillation system in the present embodiment is described in more detail.
As illustrated, in addition to above-mentioned distillation device, the membrane distillation system in the present embodiment can also include feed liquid case 5,
Constant water bath box 6, circulating pump 7, thermometer 8, pressure gauge 9, conductivity meter 10, condenser pipe 12, vavuum pump 13, fresh-water tank 14 etc.,
The connected mode of above-mentioned each part is known to those skilled in the art, therefore does not repeat.The present embodiment includes three groups of transfusions
Component, also, the woven hose that each infusion set is included in three woven hoses, first group of infusion set is respectively：First transfusion
Pipe a-1, the second woven hose a-2 and the 3rd woven hose（Not shown in figure）；Woven hose in second group of infusion set is respectively：The
Four woven hose b-1, the 5th woven hose b-2 and the 6th woven hose（Not shown in figure）；Woven hose point in 3rd group of infusion set
It is not：7th woven hose c-1, the 8th woven hose c-2 and the 9th woven hose（Not shown in figure）.It is above-mentioned each defeated referring back to Figure 10
Liquid pipe is bend pipe, and the Way out of each woven hose can be along the inwall horizontal tangent direction of membrane module 1, three groups of woven hoses
Outlet towards can set along clockwise direction.
Referring to Fig. 9, the course of work of the present embodiment is：Closed by valve and import and export the 4th woven hose b-1, the 5th transfusion
Pipe b-2 and the 6th woven hose, the first woven hose a-1 of opening, the second woven hose a-2 and the 3rd woven hose and the 7th woven hose c-1,
8th woven hose c-2 and the 9th woven hose c-3；Flow, temperature, the pressure of feeding liquid, feeding liquid are controlled by each instrumentation
Entered respectively by the first woven hose a-1, the second woven hose a-2 and the 3rd woven hose in membrane module 1, the vapor permeation film of generation
Silk 3 is pooled to vapor outlet port 4, is collected to after being condensed by the fresh water of condenser pipe 12 in fresh-water tank 14, while passing through 13 pairs of vavuum pump
Condenser system takes out negative pressure really, pressure is maintained 0.08MPa or so, and concentrate passes through the 7th woven hose c-1, the 8th woven hose
C-2 and the outlet of the 9th woven hose collect and returned in feed liquid case 5.Work after a period of time, can according to equipment display data and
Experimental design frequency etc., is switched into water out.By Valve controlling, water inlet switches to the 7th woven hose c-1, the 8th woven hose
C-2 and the 9th woven hose, delivery port switch to the first woven hose a-1, the second woven hose a-2 and the 3rd woven hose, repeat above-mentioned
Operation, and continue to monitor relevant data.Work again after a period of time, according to equipment display data and design frequency can be realized
Deng being switched into water out again, open the 4th woven hose b-1, the 5th woven hose b-2 and the 6th woven hose, water inlet is switched to
4th woven hose b-1, the 5th woven hose b-2 and the 6th woven hose, delivery port switch to the first woven hose a-1, the second woven hose
A-2 and the 3rd woven hose and the 7th woven hose c-1, the 8th woven hose c-2 and the 9th woven hose.Continuing monitoring in the course of work has
Data are closed, and repeat last time handoff procedure.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong 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 changes and modification.
Claims (10)
1. a kind of distillation device, it is characterised in that including：
Membrane module (1)；
At least three groups infusion sets, the membrane module (1) is sequentially connected to along the axial direction of the membrane module (1), for switching ground
To the membrane module (1) input and/or output liquid so as to change input and output liquid position.
2. distillation device according to claim 1, it is characterised in that infusion set described in every group is at least defeated including two
Liquid pipe, and each woven hose is along the circumferentially distributed of the membrane module (1).
3. distillation device according to claim 1, it is characterised in that each transfusion in infusion set described in every group
Circumference of the pipe along the membrane module (1) is uniformly distributed.
4. distillation device according to claim 2, it is characterised in that the woven hose is column.
5. distillation device according to claim 2, it is characterised in that described woven hose one end bore is more than another port
Footpath.
6. distillation device according to claim 5, it is characterised in that
The larger one end of the woven hose bore is placed in the membrane module (1)；Or
Described less one end of woven hose bore is placed in the membrane module (1).
7. the distillation device according to claim 5 or 6, it is characterised in that the woven hose is bend pipe.
8. distillation device according to claim 1, it is characterised in that each infusion set includes a transfusion
Pipe, each woven hose includes being used for the straight length of feed liquor and is used to the ring segment of liquid, and the ring segment is placed in described
In membrane module (1), the side wall of the ring segment offers liquid outlet.
9. distillation device according to claim 8, it is characterised in that each liquid outlet is towards the membrane module (1)
Axis direction set.
10. a kind of membrane distillation system, it is characterised in that be provided with membrane distillation dress as claimed in any one of claims 1-9 wherein
Put.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510715375.0A CN105233695B (en) | 2015-10-28 | 2015-10-28 | Distillation device and membrane distillation system |
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| CN201510715375.0A CN105233695B (en) | 2015-10-28 | 2015-10-28 | Distillation device and membrane distillation system |
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| CN105233695A CN105233695A (en) | 2016-01-13 |
| CN105233695B true CN105233695B (en) | 2017-11-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105642120B (en) * | 2016-02-18 | 2019-01-04 | 新奥科技发展有限公司 | Distillation device |
| CN106943877B (en) * | 2017-04-18 | 2020-05-19 | 江苏大学 | Device for optimizing membrane distillation process by using swirl flow |
| CN110860207A (en) * | 2019-12-06 | 2020-03-06 | 江苏远东环保工程有限公司 | Double-inlet coupling pulse flow enhanced membrane distillation system |
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|---|---|---|---|---|
| CN203155103U (en) * | 2013-02-28 | 2013-08-28 | 内蒙古工业大学 | Membrane module and membrane distillation system |
| CN103752173A (en) * | 2014-01-22 | 2014-04-30 | 清华大学 | Frequent flow direction switching type membrane distillation system |
| WO2014078897A1 (en) * | 2012-11-26 | 2014-05-30 | Victoria University | Membrane distillation arrangement |
| CN203990316U (en) * | 2014-08-08 | 2014-12-10 | 中建安装工程有限公司 | A kind of counterflow exchange distillation device |
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2015
- 2015-10-28 CN CN201510715375.0A patent/CN105233695B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014078897A1 (en) * | 2012-11-26 | 2014-05-30 | Victoria University | Membrane distillation arrangement |
| CN203155103U (en) * | 2013-02-28 | 2013-08-28 | 内蒙古工业大学 | Membrane module and membrane distillation system |
| CN103752173A (en) * | 2014-01-22 | 2014-04-30 | 清华大学 | Frequent flow direction switching type membrane distillation system |
| CN203990316U (en) * | 2014-08-08 | 2014-12-10 | 中建安装工程有限公司 | A kind of counterflow exchange distillation device |
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