CN106215702A - A kind of tubular type air gap membrane distillation assembly and distillating method - Google Patents
A kind of tubular type air gap membrane distillation assembly and distillating method Download PDFInfo
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- CN106215702A CN106215702A CN201610817134.1A CN201610817134A CN106215702A CN 106215702 A CN106215702 A CN 106215702A CN 201610817134 A CN201610817134 A CN 201610817134A CN 106215702 A CN106215702 A CN 106215702A
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- Prior art keywords
- membrane
- film head
- air gap
- cavity
- type air
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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
- B01D61/364—Membrane distillation
-
- 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
Abstract
The invention provides a kind of tubular type air gap membrane distillation assembly, described membrane component includes film head, putamina and film core, described film core is arranged at inside described putamina, upper film head that described film head includes being packaged in described putamina two ends respectively and lower film head, described film core is tubular membrane, in described tubular membrane, each pipe is internally provided with the internal diameter cooling tube less than described caliber, a water vapor channel is formed between tube wall in described cooling tube outer wall and described tubular membrane, it is equipped with two individual cavities in described upper and lower film head, and two individual cavities in described upper film head are connected with two individual cavities in described lower film head with water vapor channel by described cooling tube respectively, and the side of described individual cavities is provided with import and export.Relative to prior art, the tubular type air gap membrane distillation assembly described in the invention has the advantage such as dimensionally stable, distillation efficiency is high, be readily cleaned, length in service life.
Description
Technical field
The invention belongs to Membrane Materials field, especially relates to a kind of tubular type air gap membrane distillation assembly, uses above-mentioned pipe
The distillation device of formula air gap membrane distillation assembly and distillating method.
Background technology
A kind of full-boiled process desalting technology of Membrane Materials (MD), using film both sides vapour pressure deficit as motive force, makes waving in aqueous solution
The property sent out component arrives the side condensation of film with steam (usually water vapour) form through fenestra, thus realizes the mesh that feed liquid concentrates
, the opposite side of film then relies on the hydrophobicity of film to be intercepted by aqueous solution.MD has the advantage such as low energy consumption, atmospheric operation, available
In the process of high concentration saline, it it is the currently the only membrane process that can be directly separated out crystallized product from solution.Wherein, GAP TYPE
Membrane Materials (AGMD) can make steam condense in short distance, and the heat simultaneously condensing release can be used to heat material liquid, from
And the energy consumption of concentration process can be greatly reduced.AGMD process can reach high water generation ratio, before possessing good industrialization
Scape.But, current AGMD technology also rests on the experimental stage, and membrane module is generally using doughnut and plastic catheter as core
Core material, at high temperature poor dimensional stability, the gap between film silk and cooling tube is unstable, can produce between film and cooling tube
Conduction of heat, therefore the efficiency of membrane module is unstable, energy consumption is high and theoretical prediction exists bigger gap.On the other hand, due to cooling
Managing normally used is plastic material, and heat conductivity is poor, and cooling wall heat transmission resistance is big, and therefore steam cooling is insufficient, cold
Fluid heat supply is not enough, increases the heating of external equipment, cooling load, reduces efficiency.It addition, film distillation technology is generally used for
High salinity solution occasion, fouling membrane (usually membrane crystallization the causes hydrophobicity to decline) ratio of hollow-fibre membrane is more serious, can cause
Water generation ratio declines, and produces water the most up to standard, therefore combines the dimensional stability of board-like film and easy cleaned advantage, utilize one simultaneously
The high-termal conductivity of a little materials, research and development high efficiency, process stabilization, is prone to industrialized AGMD technology and will have a wide range of applications valency
Value.
Summary of the invention
In view of this, the invention is directed to a kind of tubular type air gap membrane distillation assembly, and described membrane component includes
Film head, putamina and film core, described film core is arranged at inside described putamina, and described film head includes being packaged in described putamina two ends respectively
Upper film head and lower film head, described film core is tubular membrane, and in described tubular membrane, each pipe is internally provided with an internal diameter less than described
The cooling tube of caliber, forms a water vapor channel between the tube wall in described cooling tube outer wall and described tubular membrane, described up and down
It is equipped with two individual cavities in two individual cavities, and described upper film head in film head to be steamed by described cooling tube and water respectively
Gas passage is connected with two individual cavities in described lower film head, and the side of described individual cavities is provided with import and export.
Further, described cooling tube is arranged concentrically with the pipe in described tubular membrane, and described cooling tube height is more than institute
State tubular membrane height；Bore >=the 3mm of described tubular membrane.
Further, described upper film head is formed, in described end cap by the end cap in outside and the hydrops plate stack combinations of inner side
Being provided with the first cavity connected with described cooling tube, one end of described first cavity is provided with import and export；It is provided with in described hydrops plate
The second cavity being connected with described water vapor channel, one end of described second cavity also is provided with importing and exporting；Described lower film head with
Described upper film header structure is identical, is symmetrical arranged, and the first cavity of wherein said upper film head is by cooling tube and described lower film head
First cavity connection, the second cavity of described upper film head is connected by the second cavity of water vapor channel with described lower film head.
Further, described film head and described cooling tube junction are provided with sealing ring, and described sealing ring is externally provided with sealing ring
Lid.
Further, described film head, putamina and film core are installed together formation tubular type air gap film steaming by shell side sealing pouring adhesive
Evaporate and offer material liquid entrance on assembly, and described putamina sidewall；Described cooling tube is that high-termal conductivity material is made.
Further, the material of described cooling tube is quartz, pottery, rustless steel or the plastics of high-termal conductivity, Qi Zhongsuo
The plastics stating high-termal conductivity preferably comprise the polytetrafluoro material of graphite.
Further, described hydrops sheet material matter is silicone rubber or fluorubber, hydrops plate offers respectively and described pipe
Formula membrane aperture match for connect the second cavity and water vapor channel through hole and match with described cooling tube external diameter
Sealing hole, acting primarily as the effect connecting end cover with putamina, the through hole simultaneously offered on its plate body and sealing hole can also make
Location-plate for cooling tube/tubular membrane, it is ensured that there is between tubular membrane and cooling tube rational gap.
The invention also provides for a kind of tubular type air gap membrane distillation device, including fluid reservoir, membrane component, pure water pipeline
With pure water collection tank, described fluid reservoir forms a blood circulation by feed pipe and reflux line with described membrane component,
The pure water outlet of described membrane component is connected with described pure water collection tank by pure water pipeline, and described membrane component is tubular type
Air gap membrane distillation assembly.
Further, described fluid reservoir is by described feed pipe and the inlet communication on described putamina sidewall, described film
The outlet on the shell side wall inlet communication by reflux line Yu described first cavity, the outlet of described first cavity is by charging
Pipeline connects with described reservoir；The outlet of described second cavity is connected with described pure water collection tank by pure water pipeline.
Further, described feed pipe is provided with heater, and described reflux line is provided with cooling fan.
Invention additionally discloses and a kind of improve the distillating method of membrane flux during Membrane Materials, described distillating method uses tubular type
Air gap membrane distillation assembly carries out Membrane Materials to saline, adds the quantity of short distance molecule condensation in still-process.
Relative to prior art, the tubular type air gap membrane distillation assembly described in the invention has the advantage that utilization pipe
The dimensional stability of formula film, high porosity and hydrophobic performance, make porous pipe type film, and arrange cooling in the pipe of tubular membrane
Pipe so that the steam in feedstock solution enters film inner space through film outer wall under the effect of saturated vapor pressure reduction, runs into
It is cooled to aqueous water during cooling tube outer surface, releases heat；Feed liquid after heat release directly or enters back into cold after cooling simultaneously
But pipe continues cooling steam, so moves in circles, not only increases distillation efficiency and also a saving energy consumption；In addition, this group
Part also has the advantage such as dimensionally stable, distillation efficiency is high, be readily cleaned, length in service life.
Described tubular type air gap membrane distillation device and improve the distillating method of membrane flux and above-mentioned tubular type gas during Membrane Materials
Gap membrane component is identical relative to prior art have the advantage that, does not repeats them here.
Accompanying drawing explanation
The accompanying drawing of the part constituting the invention is used for providing being further appreciated by the invention, and the present invention creates
The schematic description and description made, for explaining the invention, is not intended that the improper restriction to the invention.?
In accompanying drawing:
Fig. 1 is the structural representation of the tubular type air gap membrane distillation assembly described in the invention embodiment；
Fig. 2 is the structural representation of end cap in the tubular type air gap membrane distillation assembly described in the invention embodiment；
Fig. 3 is the structural representation of the hydrops plate in the tubular type air gap membrane distillation assembly described in the invention embodiment；
Fig. 4 is the combination knot of the putamina in the tubular type air gap membrane distillation assembly described in the invention embodiment and tubular membrane
Structure schematic diagram；
Fig. 5 is the schematic flow sheet of the tubular type air gap membrane distillation device described in the invention embodiment.
Description of reference numerals:
1-end cap；11-the first cavity is imported and exported；12-the first cavity；2-hydrops plate；21-the second cavity is imported and exported；22-
Two cavitys；23-seals hole；3-putamina；31-material liquid entrance；4-shell side sealing pouring adhesive；5-tubular membrane；6-cooling tube；7-seals
Circle；8-seals ring cover.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the invention and the feature in embodiment can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score,
Orientation or the position relationship of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description rather than instruction
Hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be not understood that
For the restriction to the invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate
Or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
Being described, " multiple " are meant that two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on can being understood by concrete condition
State term concrete meaning in the invention.
Describe the invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Embodiment 1
A kind of tubular type air gap membrane distillation assembly, as shown in figures 1-4, described membrane component includes film head, putamina 3 and film
Core, described film core is arranged at inside described putamina, described film head include being packaged in respectively described putamina two ends upper film head and under
Film head, described film core is tubular membrane 5, and in described tubular membrane 5, each pipe inner concentric is provided with an internal diameter less than described caliber
Cooling tube 6, forms a water vapor channel, described upper and lower film head between the tube wall in described cooling tube 6 outer wall and described tubular membrane
Inside it is equipped with two individual cavities in two individual cavities, and described upper film head to be led to by described cooling tube and steam respectively
Road is connected with two individual cavities in described lower film head, and the side of described individual cavities is provided with import and export:
Concrete, the most described upper film head is by the end cap 1 in outside and hydrops plate 2 stack combinations of inner side
Becoming, be provided with the first cavity 12 connected with described cooling tube 6 in described end cap 1, one end of described first cavity 12 is provided with first
Cavity imports and exports 11；The second cavity 22 being connected with described water vapor channel, described second cavity it is provided with in described hydrops plate 2
One end of 22 also is provided with the second cavity and imports and exports 21；Described lower film head is identical with described upper film header structure, is symmetrical arranged, Qi Zhongsuo
The first cavity 12 stating film head is connected with the first cavity 12 of described lower film head by cooling tube 6, the second of described upper film head
Cavity 22 is connected with the second cavity 22 of described lower film head by water vapor channel；
Described cooling tube 6 height is more than described tubular membrane 5 height, to ensure that described cooling tube can be placed through in end cap
The hydrops plate of side arrives end cap 1；And the bore of described tubular membrane 5 is 6mm, cooling tube 6 internal diameter is 4mm or 5mm, described cooling
Pipe 6 through described hydrops plate 2, then passes through the side base plate of described end cap and described end by the sealing hole 23 of 2 on hydrops plate
The first cavity 12 in lid connects, and the upper end cover of described film head is provided with sealing ring 7 with described cooling tube 6 junction, described close
Seal 7 is externally provided with sealing ring cover 8, to ensure sealing effectiveness, prevents leakage.
Described film head, putamina and film core are installed together formation tubular type air gap membrane distillation assembly by shell side sealing pouring adhesive 4, and
Material liquid entrance 31 is offered on described putamina sidewall.
In addition, tubular membrane material described in embodiment can be selected for politef (PTFE), polyethylene (PE), gathers partially
Fluorothene (PVDF), the hydrophobic material such as polypropylene (PP), the porous pipe type film that stretching, Thermal inactive, sintering generate can be made,
Tubular membrane diameter is at more than 3mm；
Putamina 3 is the high temperature resistant nonmetallic materials such as ABS, PE, PP, PVDF with the material of section, or metal material；
Hydrops plate is high temperature resistant elastomeric material, such as silicone rubber, fluorubber, hydrops plate offers respectively and described tubular membrane
Aperture match for connect the second cavity and water vapor channel through hole and the sealing that matches with described cooling tube external diameter
Hole, acts primarily as the effect of end cover and putamina, is also used as the location-plate of cooling tube/tubular membrane, it is ensured that tubular membrane simultaneously
And there is between cooling tube rational gap.
The material of cooling tube can use rustless steel, quartz, pottery or high-termal conductivity plastic material (to preferably comprise stone
The polytetrafluoro material of ink) make.
Embodiment 2
A kind of tubular type air gap membrane distillation device, including fluid reservoir, membrane component, pure water pipeline and pure water collection tank, institute
State fluid reservoir and form a blood circulation by feed pipe and reflux line with described membrane component, described membrane component
Pure water outlet is connected with described pure water collection tank by pure water pipeline, and described membrane component is tubular type air gap membrane distillation assembly.
Concrete, described fluid reservoir is by described feed pipe and the inlet communication on described putamina sidewall, described putamina
The outlet on the sidewall inlet communication by reflux line Yu described first cavity, feed pipe is passed through in the outlet of described first cavity
Road connects with described reservoir；The outlet of described second cavity is connected with described pure water collection tank by pure water pipeline；It is simultaneously
Guarantee distilling effect, described feed pipe is provided with heater, described reflux line is provided with cooling fan.
The work process of above-mentioned tubular type air gap membrane distillation device is: as it is shown in figure 5, after feed liquid in reservoir is heated by
In tubular type air gap membrane module, the material liquid entrance on putamina enters membrane module, carries out membrance separation, and the water in feed liquid is reached by heating
After uniform temperature, flowing at tubular membrane outer wall, now the steam of higher temperature is preferential under the effect of saturated vapor pressure reduction
Enter film inner space through film outer wall, when running into cooling tube outer surface, be cooled to aqueous water, release heat；Owing to water steams
The release of gas, causes the temperature of this stock material liquid to reduce, this stock material liquid after membrance separation by membrane module import and export out afterwards through
Reflux line enters back into membrane module, i.e. can be after the cooling fan of smaller power or other cooling devices cool down or without cold
But the first cavity being directly in film head end cover is imported and exported and is entered the first cavity and then enter inside cooling tube；This stock material liquid
When cooling tube pipe internal flow, absorb the heat of cooling tube pipe outer wall steam release and temperature raises, and by lower film head
In end cap, the first cavity and the first cavity are imported and exported and are flowed out to feed pipe, less added heat by one and just can reach relatively
High temperature, discharges steam in re-circulating to tubular membrane component, so move in circles after arriving reservoir；Described cooling tube
The steam produced in the water vapor channel formed with tubular membrane is then through entering in the second cavity in film head hydrops plate also
Imported and exported by the second cavity and enter in pure water pipeline, and then collect to standby in pure water collection tank.
Invention additionally discloses and a kind of improve distillating method described in the distillating method of membrane flux during Membrane Materials and use tubular type
Air gap membrane distillation assembly carries out Membrane Materials to saline, adds the quantity of short distance molecule condensation in still-process.
The foregoing is only the preferred embodiment of the invention, not in order to limit the invention, all at this
Within the spirit of innovation and creation and principle, any modification, equivalent substitution and improvement etc. made, should be included in the invention
Protection domain within.
Claims (10)
1. a tubular type air gap membrane distillation assembly, described membrane component includes that film head, putamina and film core, described film core are arranged at
Inside described putamina, upper film head that described film head includes being packaged in described putamina two ends respectively and lower film head, it is characterised in that: institute
Stating film core is tubular membrane, and in described tubular membrane, each pipe is internally provided with the internal diameter cooling tube less than described caliber, described cold
But form a water vapor channel between the tube wall in pipe outer wall and described tubular membrane, in described upper and lower film head, be equipped with two independences
Two individual cavities in cavity, and described upper film head are respectively by described cooling tube and water vapor channel and described lower film head
Two individual cavities be connected, and the side of described individual cavities is provided with import and export.
Tubular type air gap membrane distillation assembly the most according to claim 1, it is characterised in that: described cooling tube and described tubular membrane
Interior pipe is arranged concentrically, and described cooling tube height is more than described tubular membrane height；Bore >=the 3mm of described tubular membrane.
Tubular type air gap membrane distillation assembly the most according to claim 2, it is characterised in that: described upper film head is by the end cap in outside
Form with the hydrops plate stack combinations of inner side, in described end cap, be provided with the first cavity connected with described cooling tube, described first
One end of cavity is provided with import and export；The second cavity being connected with described water vapor channel it is provided with in described hydrops plate, described
One end of two cavitys also is provided with importing and exporting；Described lower film head is identical with described upper film header structure, is symmetrical arranged, wherein said upper film
First cavity of head is connected with the first cavity of described lower film head by cooling tube, and the second cavity of described upper film head is steamed by water
Gas passage is connected with the second cavity of described lower film head.
4. according to the tubular type air gap membrane distillation assembly described in claim 1 or 2 or 3, it is characterised in that: described film head is cold with described
But pipe junction is provided with sealing ring, and described sealing ring is externally provided with sealing ring cover.
Tubular type air gap membrane distillation assembly the most according to claim 1, it is characterised in that: described film head, putamina and film core are logical
Cross shell side sealing pouring adhesive be installed together formation tubular type air gap membrane distillation assembly, and described putamina sidewall on offer feed liquid turnover
Mouthful；Described cooling tube is that high-termal conductivity material is made；The material of described cooling tube is quartz, pottery, rustless steel or high-termal conductivity
Plastics, the plastics of wherein said high-termal conductivity preferably comprise the polytetrafluoro material of graphite.
Tubular type air gap membrane distillation assembly the most according to claim 3, it is characterised in that: described hydrops sheet material matter is silicone rubber
Or fluorubber, hydrops plate offers respectively and matches for connecting the second cavity and water vapor channel with described tubular membrane aperture
Through hole and the sealing hole that matches with described cooling tube external diameter.
7. a tubular type air gap membrane distillation device, including fluid reservoir, membrane component, pure water pipeline and pure water collection tank, described
Fluid reservoir forms a blood circulation by feed pipe and reflux line and described membrane component, described membrane component pure
Water out is connected with described pure water collection tank by pure water pipeline, it is characterised in that: described membrane component is tubular type air gap film
Distillation assembly.
Tubular type air gap membrane distillation device the most according to claim 7, it is characterised in that: described fluid reservoir is by described charging
Pipeline and the inlet communication on described putamina sidewall, the outlet on described putamina sidewall is by reflux line and described first cavity
Inlet communication, the outlet of described first cavity is connected with described reservoir by feed pipe；The outlet of described second cavity
Connected with described pure water collection tank by pure water pipeline.
Tubular type air gap membrane distillation device the most according to claim 7, it is characterised in that: described feed pipe is provided with heating
Device, described reflux line is provided with cooling fan.
10. one kind is improved the distillating method of membrane flux during Membrane Materials, it is characterised in that: described distillating method uses tubular type gas
Gap membrane component carries out Membrane Materials to saline, adds the quantity of short distance molecule condensation in still-process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817134.1A CN106215702A (en) | 2016-09-12 | 2016-09-12 | A kind of tubular type air gap membrane distillation assembly and distillating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817134.1A CN106215702A (en) | 2016-09-12 | 2016-09-12 | A kind of tubular type air gap membrane distillation assembly and distillating method |
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| CN106215702A true CN106215702A (en) | 2016-12-14 |
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ID=58074188
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610817134.1A Pending CN106215702A (en) | 2016-09-12 | 2016-09-12 | A kind of tubular type air gap membrane distillation assembly and distillating method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259287A (en) * | 2022-09-03 | 2022-11-01 | 南华大学 | High-yield tubular membrane distillation membrane device and wastewater concentration method |
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| CN202876661U (en) * | 2012-07-03 | 2013-04-17 | 天津大学 | Hollow fibrous membrane distiller |
| CN203990317U (en) * | 2014-08-18 | 2014-12-10 | 湖州森诺膜技术工程有限公司 | The stifled energy-saving film distiller of a kind of normal pressure anti-soil |
| CN105363348A (en) * | 2015-11-09 | 2016-03-02 | 新奥科技发展有限公司 | Membrane distillation apparatus and membrane distillation system possessing membrane distillation apparatus |
| CN206435056U (en) * | 2016-09-12 | 2017-08-25 | 天津沃驰科技有限公司 | A kind of tubular type air gap membrane distillation component |
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2016
- 2016-09-12 CN CN201610817134.1A patent/CN106215702A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202876661U (en) * | 2012-07-03 | 2013-04-17 | 天津大学 | Hollow fibrous membrane distiller |
| CN203990317U (en) * | 2014-08-18 | 2014-12-10 | 湖州森诺膜技术工程有限公司 | The stifled energy-saving film distiller of a kind of normal pressure anti-soil |
| CN105363348A (en) * | 2015-11-09 | 2016-03-02 | 新奥科技发展有限公司 | Membrane distillation apparatus and membrane distillation system possessing membrane distillation apparatus |
| CN206435056U (en) * | 2016-09-12 | 2017-08-25 | 天津沃驰科技有限公司 | A kind of tubular type air gap membrane distillation component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115259287A (en) * | 2022-09-03 | 2022-11-01 | 南华大学 | High-yield tubular membrane distillation membrane device and wastewater concentration method |
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Effective date of registration: 20170911 Address after: Anxin County 071600 Hebei city of Baoding province Zhao Bei Kou Zhen Chuang-tzu Cun You Yi Lu Nan No. 7 season Applicant after: Sun Ziwei Address before: Room 3 building C3012 No. 6 building A, 300300 Tianjin District of Dongli City Huaming Industrial Park HuaFeng Road Applicant before: TIANJIN WOCHI TECHNOLOGY CO., LTD. |
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Application publication date: 20161214 |