CN108096864A - A kind of plate-type evaporator - Google Patents
A kind of plate-type evaporator Download PDFInfo
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- CN108096864A CN108096864A CN201611045760.XA CN201611045760A CN108096864A CN 108096864 A CN108096864 A CN 108096864A CN 201611045760 A CN201611045760 A CN 201611045760A CN 108096864 A CN108096864 A CN 108096864A
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- Prior art keywords
- plate
- type evaporator
- evaporator
- end plate
- steam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/221—Composite plate evaporators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of plate-type evaporators.The evaporator is made of a series of superposition of plates, and both ends have respectively and have one piece of end plate to serve to fix and support；Described evaporator one end end plate is equipped with inlet tube, concentrate outlet tube, and described evaporator the same end end plate is equipped with steam inlet, the condensation-water drain for being passed through steam；Wherein, the plate be made of porous materials including；Alternatively, multiple apertures are distributed in the plate, the moistening side of plate is provided outside porous material.The present invention plate-type evaporator it is simple in structure, it is less scaling, have the advantages that good effect of heat exchange, heat exchange efficiency are high.
Description
Technical field
The present invention relates to evaporation equipment technical field, more particularly to a kind of plate-type evaporator.
Background technology
Plate-type evaporator is a kind of heat-exchangers of the plate type in evaporation technology, by feat of efficient, compact, cheap
The advantages that, gradually it is widely used in fields such as petrochemical industry, food processing, air conditioner refrigerating and sea water desalinations.It is board-like
Evaporator is made of side by side using plate as main heat transfer element a series of plates of different shapes.On each piece of heat exchange plate
Outlet and entrance are respectively equipped with, cold and hot fluid rises or falls in plate both sides, completes to conduct heat by plate.Because between plate
Sealing, it is prevented that both sides working medium contact with each other and caused by pollution, all plates lean on bolt-connection or welding
Etc. modes link together.Different plate shapes can strengthen flow disturbance, turbulent flow be formed, so as to achieve the purpose that augmentation of heat transfer.
The material of plate has metallic plate and membrane material etc., can be divided into all welded type, half weldering formula and can according to the structure type of heat transfer element
Formula etc. is torn open, if can be divided into falling film type again according to flow and runner form, rise membrane type and climbing-falling film.
Plate-type evaporator is membranaceous evaporation, and gas-liquid flow velocity, fouling and liquid film are thick between heat transfer coefficient depends mainly on plate
The factors such as degree.The liquid of evaporation side is flowed in membranaceous along plate in Conventional plate-type evaporator, and process fluid is steamed in the process
Concentrate is sent out, condensation side is heated by water vapour exothermic condensation process.The evaporation side and condensation side of plate-type evaporator are by plate
Piece is completely isolated, and the heat of condensation side is transmitted to evaporation side come heat process fluid by plate.Since process fluid usually contains
There is a solid of dissolving, the reasons such as thickness of liquid film caused by feed deficiency, evaporation caused by liquid distribution is uneven is progressively thinned make
" dry wall " and scale formation occur for sheet surface.
Chinese patent CN105347413A discloses a kind of board-like hydrophobic polymer economic benefits and social benefits MVR systems, plate evaporation
The plate of device is hydrophobic polymer film.Using the polymer film as heat-transfer surface base material, coming off for dirty layer can be accelerated, reduce heat transfer
Temperature difference loss.Chinese patent CN103175432A and CN203259049U are related to a kind of heat exchange plate for plate-type evaporator.It is changed
Hot plate sheet matrix upper surface processes micro- rib, is provided with nick or processes coarse structure on the surface of the heat exchange plate matrix.
Nucleus of boiling number can be increased, the degree of superheat of wall surface, enhanced boiling heat transfer is reduced, and then improve the overall heat-transfer coefficient of heat exchanger.
But the above variation enhances heat transfer, accelerates coming off for dirty layer, not to avoiding sheet surface " dry wall " and fouling is asked
Topic generates advantageous effect.
The content of the invention
（One）Technical problems to be solved
The object of the present invention is to provide a kind of simple in structure, less scaling, plate-type evaporator of easy cleaning, so that plate evaporation
Device good effect of heat exchange, heat exchange efficiency is high, can long-term operation.
（Two）Technical solution
In order to solve the above technical problem, the present invention provides a kind of plate-type evaporators, using plate as main heat transfer element, use
There is preferable heat transfer effect and heat exchange efficiency in evaporation technology.
Technical scheme specifically includes：A kind of plate-type evaporator, using plate as main heat transfer element, by a series of
Plate superposition composition, both ends have respectively and have one piece of end plate to serve to fix and support；Described evaporator one end end plate is equipped with feed liquor
Pipe, concentrate outlet tube, described evaporator the same end end plate are equipped with steam inlet, the condensation-water drain for being passed through steam；Wherein,
The plate is made of porous materials.
Wherein, the aperture of the porous material is 0.10 μm~100 μm, and the thickness of the plate is 0.015mm~5mm.
The present invention also provides the plate-type evaporator of another structure, in evaporation technology, using plate as main heat transfer
Element, the plate-type evaporator are made of a series of superposition of plates, and both ends have respectively and have one piece of end plate to serve to fix and support；Institute
It states evaporator one end end plate and is equipped with inlet tube, concentrate outlet tube, be additionally provided on the end plate of described evaporator the same end and be passed through steaming
The steam inlet of vapour, condensation-water drain；Wherein, multiple apertures, the moistening side of the plate is distributed in the plate（Cold side）
Surface is provided with porous material.
Wherein, the plate is metallic plate.
Wherein, on plate the aperture a diameter of 0.3mm~10mm, the thickness of the plate is 0.1mm~2.0mm,
Preferably 0.2mm~1.5mm.
Wherein, the aperture of the porous material is 0.02 μm~30 μm.
Wherein, the centre of the both ends end plate is equipped with multiple plates, and the end plate, which serves, to be fixed and supported, and passes through weldering
It connects, the connection modes such as bolt-connection fix and support plate.
Wherein, condensation-water drain, the condensation-water drain position are additionally provided with the evaporator end sheet of the steam (vapor) outlet homonymy
In the lower section of end plate（Lower part）.
Wherein, according to heat exchanging liquid and the needs of spatial position, the plate can have different shapes.As described in
Plate can be the different shapes such as rectangle, circle.
Wherein, the moistening side of the plate（Cold side）The surface of surface, that is, sheet contacts process fluid.
In the prior art, it is to completely cut off completely between the evaporation side and condensation side of plate-type evaporator（It is closed）State.With showing
Have technology the difference is that in the present invention plate-type evaporator evaporation side and condensation side（Include steam channel）Between be in base
This isolation（It is closed）State only can carry out faint mass-and heat-transfer mistake by the fine channel of porous material on plate therebetween
Journey.
（Three）Advantageous effect
Compared with prior art, the present invention has the following advantages：
A kind of plate-type evaporator provided by the invention, plate is made of porous material or heat exchanger tube is by common metallic plate system
Into in metallic plate equipped with several small through hole, in metal sheet surface setting porous material；Thus the hot side of evaporator and cold side are by plate
Piece is relatively isolated, and the sub-fraction steam of hot side is directly entered cold through the micropore of plate under the steam pressure difference effect of both sides
The steam of hot side is introduced into cold side by side, and the steam of introducing will cause liquid film turbulence between plate, and heat transfer coefficient is with liquid Reynolds number
Increase and increase, enhance heat transfer；And the fraction steam introduced is in saturation state, since evaporation side operation temperature is low
In the dew-point temperature for introducing steam, steam will condense in sheet surface, so just maintain sheet surface moistening, avoid plate
Piece surface " dry wall " and scale formation.
Description of the drawings
Fig. 1 is a kind of overall structure front view of plate-type evaporator of the present invention.
Fig. 2 is the partial enlarged view of A in Fig. 1.
Fig. 3 be concurrently in charge of a mouthful layout drawing for a kind of overall structure side view of plate-type evaporator of the present invention.
In figure：1：Hot side；2：Aperture；3：Plate；4：Condensate liquid；5：Liquid film；6：Cold side；7：Steam inlet；8：Inlet；
9：Steam condensate outlet；10：Vapor and liquid export；11：Bolt-connection；12：First member plate；13：Right end plate；15：Rack；17：It introduces
Steam.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it is necessary to explanation, term " on ", " top ", " lower part ", "left", "right", " water
It is flat ", " interior ", the orientation of the instructions such as " outer " or position relationship for based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the present invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " connected " " connects
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can be machine
Tool is connected or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, can above-mentioned term be understood in the present invention with concrete condition
Concrete meaning.
In addition, in the description of the present invention, unless otherwise indicated, " a series of ", " several ", " multiple ", meaning be two
It is a or more than two.
Embodiment one
As shown in Figure 1, Figure 2 and Figure 3, it is a kind of plate-type climbing film evaporator provided by the invention,
For in evaporation technology.With the heat exchanger that plate 3 is main heat transfer element, it is made of a series of superposition of plates 3, if dry plate
Pass through gasket between piece（Circle）It is sealed.The thickness of plate 3 is the mm of 0.015 mm~5, and both ends have respectively and have one piece of end plate
12nd, 13 serve and fix and support.12 lower part of evaporator first member plate is equipped with two inlets, 8, two steam condensates
Outlet 9, end plate 12 top in described evaporator the same end is arranged with the steam inlet 7 for being passed through saturated vapor, gas liquid outlet 10, described
Plate 3 is made of porous materials.
Wherein, the aperture of the porous material is 0.10 μm~100 μm, and the thickness of the plate 3 is 0.015mm~5mm.
The plate-type evaporator liquid to be evaporated enters from lower part inlet 8, in membranaceous along plate 3 to upstream, herein
Liquid is evaporated concentrate in the process；Steam is passed through by steam inlet 7 to heat plate 3 from top to bottom, plate-type evaporator
Hot side 1 and cold side 6 be relatively isolated by plate 3, specifically, the plate 3 is made of porous materials；The heat of one side hot side 1
Amount is transmitted to cold side 6 come the process fluid between heating plate by plate 3, on the other hand in the vapour pressure of 6 both sides of hot side 1 and cold side
The sub-fraction steam of the lower hot side 1 of difference effect is directly entered cold side 6 through plate 3, and the steam of hot side 1 is introduced into cold side 6；
After steam 17 is introduced, the heat transfer coefficient of plate-type evaporator significantly improves, and arrow direction is the flow direction of steam in figure,
This is because 3 surface liquid film of plate, 5 turbulence can be enhanced by introducing steam 17, heat transfer coefficient increases with the increase of liquid Reynolds number,
Enhance heat transfer；And the fraction steam introduced is in saturation state, since 6 operation temperature of cold side is less than introducing steam 17
Dew-point temperature, steam will be liquefied as the surface that condensate liquid 4 condenses in plate 3, thus keep 3 surface wettability of plate, avoid
" the dry wall " and scale formation of plate 3.
The porous material can be ceramic porous material, glass frit material etc., can specifically select according to actual needs
It selects, the aperture of the porous material can be 0.10 μm~100 μm, be preferably 0.50 μm~60 μm, the thickness of the plate 3 can
Think the mm of 0.015 mm~5, be preferably the mm of 0.1mm~1.0.
It can be divided into falling film type according to flow and runner form plate-type evaporator, rise membrane type and climbing-falling film, preferably rise membrane type
Plate-type evaporator, the evaporator end sheet 12,13 lower parts be equipped with inlet 8, preferably two；Steam condensate outlet 9, preferably
Two.End plate 12 top in described evaporator the same end is arranged with the steam inlet 7 for being passed through saturated vapor, vapor and liquid export 10, preferably
One.
Wherein, multiple plates 3 are equipped among the both ends end plate 12,13, the end plate, which serves, to be fixed and supported, and is passed through
Plate 3 is fixed and supported by the connection modes such as welding, bolt-connection.
Embodiment two
The present invention also provides a kind of plate-type evaporator, in evaporation technology, using plate as the heat exchanger of main heat transfer element, by
A series of plate superpositions form, and pass through gasket between several plates（Circle）It is sealed.The thickness of plate be 0.1mm~
2.0mm, both ends have respectively and have one piece of end plate 12,13 to serve to fix and support.12 lower part of evaporator first member plate is equipped with two
A 8, two steam condensate outlets 9 of inlet, end plate 12 top in described evaporator the same end, which is arranged with, is passed through saturated vapor
Multiple apertures are distributed in steam inlet 7, vapor and liquid export 10, the plate 3, and the plate moistens side（Cold side）Surface is provided with
Porous material.
Wherein, the plate is metallic plate.
Wherein, a diameter of 0.3mm~10mm of the aperture is preferably 0.5mm-6mm, and the thickness of the plate is 0.1
The mm of mm~2.0 is preferably 0.2mm~1.5mm.
Wherein, the aperture of the porous material is 0.02 μm~30 μm, is preferably 0.05 μm~20 μm.
Wherein, multiple plates 3 are equipped among the both ends end plate 12,13, the end plate, which serves, to be fixed and supported, and is passed through
The connection modes such as welding, bolt-connection fix and support plate 3.
The present embodiment two and embodiment one difference lies in, as shown in Fig. 2, the plate 3 is common sheet metal, institute
It states plate 3 and multiple apertures 2 is distributed with, the aperture 2 is horizontally disposed, outside the moistening side of the plate（Cold side）Surface is provided with more
Porous materials.
As can be seen from the above embodiments, the configuration of the present invention is simple, less scaling, easy cleaning, good effect of heat exchange, heat exchange effect
Rate is high.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (13)
- It 1. a kind of plate-type evaporator, is made of a series of superposition of plates, both ends have respectively and have one piece of end plate to serve to fix and support； Described evaporator one end end plate is equipped with inlet tube, concentrate outlet tube, and described evaporator the same end end plate is equipped with and is passed through steaming The steam inlet of vapour, condensation-water drain；It is characterized in that, the plate is made of porous materials.
- 2. plate-type evaporator described in accordance with the claim 1, which is characterized in that the aperture of the porous material for 0.10 μm~ 100μm。
- 3. according to the plate-type evaporator described in claim 1 or 2, which is characterized in that the thickness of the plate for 0.015mm~ 5mm。
- 4. plate-type evaporator described in accordance with the claim 1, which is characterized in that the end plate passes through welding, bolt connection mode Plate is fixed and supported.
- 5. plate-type evaporator described in accordance with the claim 1, which is characterized in that the condensation-water drain is located at the lower section of end plate.
- It 6. a kind of plate-type evaporator, is made of a series of superposition of plates, both ends have respectively and have one piece of end plate to serve to fix and support； Described evaporator one end end plate is equipped with inlet tube, concentrate outlet tube, is additionally provided with and is passed through on the end plate of described evaporator the same end The steam inlet of saturated vapor, condensation-water drain；It is characterized in that, multiple apertures are distributed in the plate, the plate Moistening side surface is provided with porous material.
- 7. according to the plate-type evaporator described in claim 6, which is characterized in that the plate is metallic plate.
- 8. according to the plate-type evaporator described in claim 6 or 7, which is characterized in that a diameter of 0.3mm of the aperture~ 10mm, the thickness of the plate is 0.1mm~2.0mm.
- 9. according to the plate-type evaporator described in claim 8, which is characterized in that the thickness of the plate is 0.2mm~1.5m.
- 10. according to the plate-type evaporator described in claim 6, which is characterized in that the aperture of the porous material for 0.02 μm~ 30μm。
- 11. according to the plate-type evaporator described in claim 10, which is characterized in that the aperture of the porous material for 0.05 μm~ 20μm。
- 12. according to the plate-type evaporator described in claim 6, which is characterized in that the end plate passes through welding or bolt-connection Mode fixes and supports plate.
- 13. according to the plate-type evaporator described in claim 6, which is characterized in that the condensation-water drain is located under end plate Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045760.XA CN108096864B (en) | 2016-11-24 | 2016-11-24 | Plate-type evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045760.XA CN108096864B (en) | 2016-11-24 | 2016-11-24 | Plate-type evaporator |
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| Publication Number | Publication Date |
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| CN108096864A true CN108096864A (en) | 2018-06-01 |
| CN108096864B CN108096864B (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611045760.XA Active CN108096864B (en) | 2016-11-24 | 2016-11-24 | Plate-type evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744571A (en) * | 2018-06-28 | 2018-11-06 | 大连理工大学 | A kind of the air gap diffusion distillating method and device of atmospheric operation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259971A (en) * | 2007-03-05 | 2008-09-10 | 华东理工大学 | Method for treating membrane distillation water |
| CN102728081A (en) * | 2012-07-22 | 2012-10-17 | 甘肃蓝科石化高新装备股份有限公司 | Detachable climbing film plate type evaporator |
-
2016
- 2016-11-24 CN CN201611045760.XA patent/CN108096864B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259971A (en) * | 2007-03-05 | 2008-09-10 | 华东理工大学 | Method for treating membrane distillation water |
| CN102728081A (en) * | 2012-07-22 | 2012-10-17 | 甘肃蓝科石化高新装备股份有限公司 | Detachable climbing film plate type evaporator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744571A (en) * | 2018-06-28 | 2018-11-06 | 大连理工大学 | A kind of the air gap diffusion distillating method and device of atmospheric operation |
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| Publication number | Publication date |
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| CN108096864B (en) | 2020-05-19 |
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