CN204293893U - A kind of electric field-enhanced plate type falling-film vaporising device - Google Patents
A kind of electric field-enhanced plate type falling-film vaporising device Download PDFInfo
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- CN204293893U CN204293893U CN201420746514.7U CN201420746514U CN204293893U CN 204293893 U CN204293893 U CN 204293893U CN 201420746514 U CN201420746514 U CN 201420746514U CN 204293893 U CN204293893 U CN 204293893U
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Abstract
The utility model discloses a kind of electric field-enhanced plate type falling-film vaporising device.Device forms primarily of high voltage source, electrode wires, seal, stainless steel plate, insulated enclosure pad, insulating supporting dividing plate and housing.In the utility model, the adjacent stainless steel plate of plate-type evaporator connects high voltage source and ground connection respectively by electrode wires, thus formation high voltage electric field, liquid forms film evaporation device by aperture cloth liquid in evaporation side, steam is entered the liquid of the condensation side condensation release Topography evaporation side of plate-type evaporator by the side between plate, high voltage electric field simultaneously between stainless steel plate can enhanced water evaporation process further, in gas-liquid separation space, gas-liquid separation is occurred by the liquid evaporated, indirect steam and the liquid be concentrated all can utilize further.The utility model utilizes the effect of high voltage electric field enhanced water evaporation, forms high voltage electric field, can improve heat transfer coefficient by the reasonable Arrangement of electrode wires between the plate of plate-type down-film evaporator, reduces heat exchange area, saves sheet material, reduces energy consumption.
Description
Technical field
The utility model relates to a kind of electric field-enhanced plate type falling-film vaporising device, belongs to the technical field of evaporimeter.
Background technology
Evaporation is exactly the method with heating, the solution containing fixedness solute is heated to boiling situation, partial solvent is vaporized and is removed, thus improves the unit operations of solute concentration in solvent.Apply evaporation operation in industrial production and have following several occasion: 1. concentrating dilute solution is directly produced product or concentrated solution reprocessing (as crystallisation by cooling) is produced solid product, concentrating of such as electrolytic caustic soda liquid, concentrating of sugar water solution and concentrating of various fruit juice; 2. concentrated solution and recycling design while, the concentrated de-benzene of such as organophosphorus pesticide benzole soln, the evaporation etc. of alcohol leachate in Chinese medicine production; 3. in order to obtain pure solvent, such as desalinization etc.Mainly contain flooded evaporator, dry evaporator and downward film evaporator three kinds in form.Falling film evaporator is a kind of conventional evaporation equipment, have advantages such as having a narrow range of temperature, the holdup time is short, long working life, compact conformation, effect number are unrestricted, oneself is widely used in the industries such as metallurgy, food processing, desalinization, chemical industry, light industry, medicine, sewage disposal.
Along with the develop rapidly of World Economics, the mankind have been faced with day by day serious global warming and the threat of lack of energy.In order to improve the efficiency of China's using energy source, realize the sustainable development of China, country proposes " energy-saving and emission-reduction " policy, and vigorously implements.Therefore, if the heat transfer coefficient of falling film evaporator is improved further, will effectively save the energy required for evaporation process, reach energy-conservation object.
The shallow river of Japanese scholars finds that in experiment in 1976 electric field can evaporation enhancement and substantially not consuming energy, and is called as shallow river effect.Theory analysis is thought, electric field-enhanced boiling heat transfer can be explained from two aspects: be exactly the effect of dielectrophoresis force to steam bubble on the one hand; It is exactly on the other hand the stretching action of electric charge on electric charge in liquid-vaqor interface and heat-transfer surface.With regard to promoting the effect of evaporation, DC electric field is better than AC field, and line electrode is better than plate electrode.Electric energy consumption needed for electric field-enhanced heat transfer is very little relative to heat output, substantially can ignore, can be effectively energy-conservation, therefore has very large development prospect.
Utilize electric field to promote evaporation and this feature that substantially do not consume energy, arrange electrode by traditional plate-type down-film evaporator, form a kind of electric field-enhanced plate type falling-film vaporising device, the coefficient of heat transfer of evaporimeter can be improved, reduce the heat exchange area of evaporimeter, save sheet material, reduce energy consumption.
Summary of the invention
It is not high that the utility model object is to overcome existing evaporator heat transfer coefficient, the deficiency that volume is excessive, high voltage electric field this phenomenon of enhanced water evaporation process can be applied to traditional plate-type down-film evaporator, the electric field-enhanced plate type falling-film vaporising device that a kind of heat transfer coefficient is high, volume is little, energy consumption is low is provided.
Electric field-enhanced plate type falling-film vaporising device comprises housing, liquid-inlet, insulating supporting dividing plate, plate type falling-film heat exchanger, condensation-water drain, gas-liquid separation space, concentrated solution outlet, indirect steam exports, stainless steel plate, inlet steam space, baffle plate, steam inlet, high-tension electricity polar curve, earth electrode line, insulator foot, polytetrafluoroethylene (PTFE) shaped spiral housing, high voltage source, insulator, tight loop, conducting rod, epirelief insulated enclosure pad, insulated enclosure circle, inlet opening insulated enclosure pad, lower convex insulated enclosure pad, condensation chamber, vaporization chamber,
Be provided with plate type falling-film heat exchanger in housing, insulating supporting dividing plate is fixed on housing, and is divided into inlet steam space, the upper and lower two parts in gas-liquid separation space around plate type falling-film heat exchanger;
Housing upper and lower part sidewall is provided with liquid-inlet, condensation-water drain and steam inlet, indirect steam outlet, and liquid-inlet, condensation-water drain are connected with plate type falling-film heat exchanger; Case top is provided with insulator foot, insulator foot upper end is connected with polytetrafluoroethylene (PTFE) shaped spiral housing by tight loop, polytetrafluoroethylene (PTFE) shaped spiral housing upper end is provided with insulator, high voltage source is connected with stainless steel plate by insulator, conducting rod, high-tension electricity polar curve, housing bottom is provided with concentrated solution outlet, and housing is by earth electrode line ground connection;
Between two stainless steel plates, top is provided with inlet opening insulated enclosure pad, bottom is provided with lower convex insulated enclosure pad composition condensing unit, between two stainless steel plates, top is provided with epirelief insulated enclosure pad, bottom is provided with two insulated enclosure circle composition evaporation elements, the position of the upper end of lower convex insulated enclosure pad, the position of the lower end of epirelief insulated enclosure pad and the centre position of insulating supporting dividing plate maintain an equal level, plate type falling-film heat exchanger is by the baffle plate of both sides and condensing unit, evaporation element interval repeats to be formed by stacking, wherein, adjacent condensing unit and evaporation element share one piece of stainless steel plate.
Described stainless steel plate is provided with bar shaped inlet, a K cloth liquid aperture and two condensation-water drains, and cloth liquid aperture is positioned at the below of bar shaped inlet, and the span of diameter 2-4mm, K is 6-12;
Described high voltage source is dc source, and the voltage max that can provide is 30kV;
The every odd number sheet of described stainless steel plate is connected with high voltage source by high-tension electricity polar curve, and every even number sheet is by earth electrode line ground connection;
Electric field-enhanced plate type falling-film method of evaporating is: stainless steel plate adjacent in plate type falling-film heat exchanger connects high voltage source and ground connection respectively by high-tension electricity polar curve and earth electrode line, thus high voltage electric field is formed between stainless steel plate, liquid enters plate type falling-film heat exchanger from liquid-inlet, in vaporization chamber, film evaporation device is formed via cloth liquid aperture cloth liquid, steam enters inlet steam space through steam inlet simultaneously, then from adjacent two pieces of stainless steel plates, the side openings that inlet opening insulated enclosure pad and insulating supporting dividing plate are formed enters condensation chamber condensation and discharges latent heat, heat is delivered on the liquid falling liquid film of vaporization chamber by stainless steel plate, the latent heat of the liquid falling film absorption steam-condensation release in vaporization chamber evaporates, high voltage electric field simultaneously between stainless steel plate further promotes the evaporation process of liquid film, cooling water is become after steam-condensation, discharge evaporimeter from coolant outlet, by the liquid that evaporates from adjacent two pieces of stainless steel plates, the side of insulating supporting dividing plate and two insulated enclosure circle formation and lower openings are left vaporization chamber and are entered gas-liquid separation space, gas-liquid separation is there is in gas-liquid separation space, indirect steam and concentrate leave housing from indirect steam outlet and concentrated solution outlet respectively, by further Collection utilization.
Compared with prior art, the utility model has the following advantages:
1, the utility model utilizes this effect of electric field-enhanced evaporation, by rational layout, between the plate of plate-type down-film evaporator, forms high voltage electric field, can improve the heat transfer coefficient of evaporimeter, reduces the volume of evaporimeter, saves sheet material, reduce energy consumption.
2, the electrical body such as the utility model electric supply installation and electrode wires is all provided with seal, and by frame ground, ensure that the safety of equipment use.
3, the utility model is convenient directly improves on original plate-type down-film evaporator basis, reduces manufacturing improvement cost.
4, the utility model makes by the design of insulating supporting dividing plate that steam enters from condensation chamber side openings, indirect steam leaves from vaporization chamber side openings, decreases plate the number of openings, increases effective heat exchange area; The design of cloth liquid aperture makes the formation that ensure that falling liquid film.
Accompanying drawing explanation
Fig. 1 is the structural representation of electric field-enhanced plate type falling-film vaporising device;
Fig. 2 is the sectional view along hatching I-I of Fig. 1;
Fig. 3 is the sectional view along hatching II-II of Fig. 1;
Fig. 4 be Fig. 2,3 the sectional view along hatching III-III.
Detailed description of the invention
As Fig. 1, 2, 3, shown in 4, electric field-enhanced plate type falling-film vaporising device comprises housing 1, liquid-inlet 2, insulating supporting dividing plate 3, plate type falling-film heat exchanger 4, condensation-water drain 5, gas-liquid separation space 6, concentrated solution outlet 7, indirect steam outlet 8, stainless steel plate 9, inlet steam space 10, baffle plate 11, steam inlet 12, high-tension electricity polar curve 13A, earth electrode line 13B, insulator foot 14, polytetrafluoroethylene (PTFE) shaped spiral housing 15, high voltage source 16, insulator 17, tight loop 18, conducting rod 19, epirelief insulated enclosure pad 21, insulated enclosure circle 22, inlet opening insulated enclosure pad 26, lower convex insulated enclosure pad 28, condensation chamber 29, vaporization chamber 30,
Be provided with plate type falling-film heat exchanger 4 in housing 1, insulating supporting dividing plate 3 is fixed on housing 1, and is divided into inlet steam space 10, the upper and lower two parts in gas-liquid separation space 6 around plate type falling-film heat exchanger 4;
Housing upper and lower part sidewall is provided with liquid-inlet 2, condensation-water drain 5 and steam inlet 12, indirect steam outlet 8, and liquid-inlet 2, condensation-water drain 5 are connected with plate type falling-film heat exchanger 4; Case top is provided with insulator foot 14, insulator foot upper end is connected with polytetrafluoroethylene (PTFE) shaped spiral housing 15 by tight loop 18, polytetrafluoroethylene (PTFE) shaped spiral housing upper end is provided with insulator 17, high voltage source 16 is connected with stainless steel plate 9 by insulator, conducting rod 19, high-tension electricity polar curve 13A, housing bottom is provided with concentrated solution outlet 7, and housing is by earth electrode line ground connection;
Between two stainless steel plates, top is provided with inlet opening insulated enclosure pad, bottom is provided with lower convex insulated enclosure pad composition condensing unit, between two stainless steel plates, top is provided with epirelief insulated enclosure pad, bottom is provided with two insulated enclosure circle composition evaporation elements, the position of the upper end of lower convex insulated enclosure pad, the position of the lower end of epirelief insulated enclosure pad and the centre position of insulating supporting dividing plate maintain an equal level, plate type falling-film heat exchanger 4 is by the baffle plate 11 of both sides and condensing unit, evaporation element interval repeats to be formed by stacking, wherein, adjacent condensing unit and evaporation element share one piece of stainless steel plate.
Described stainless steel plate 9 is provided with bar shaped inlet 20, a K cloth liquid aperture 27 and two condensation-water drains 23, and cloth liquid aperture 27 is positioned at the below of bar shaped inlet 20, and the span of diameter 2-4mm, K is 6-12;
Described high voltage source 16 is dc source, and the voltage max that can provide is 30kV;
The every odd number sheet of described stainless steel plate is connected with high voltage source 16 by high-tension electricity polar curve 13A, and every even number sheet is by earth electrode line 13B ground connection;
Described electric field-enhanced plate type falling-film method of evaporating is: stainless steel plate 9 adjacent in plate type falling-film heat exchanger 4 connects high voltage source 16 and ground connection respectively by high-tension electricity polar curve 13A and earth electrode line 13B, thus high voltage electric field is formed between stainless steel plate 9, liquid enters plate type falling-film heat exchanger 4 from liquid-inlet 2, in vaporization chamber 30, film evaporation device is formed via cloth liquid aperture 27 cloth liquid, steam enters inlet steam space 10 through steam inlet 12 simultaneously, then from adjacent two pieces of stainless steel plates 9, the side openings that inlet opening insulated enclosure pad 26 and insulating supporting dividing plate 2 are formed enters condensation chamber 29 condensation and discharges latent heat, heat is delivered on the liquid falling liquid film of vaporization chamber 30 by stainless steel plate 9, the latent heat of the liquid falling film absorption steam-condensation release in vaporization chamber 30 evaporates, high voltage electric field simultaneously between stainless steel plate 9 further promotes the evaporation process of liquid film, cooling water is become after steam-condensation, discharge evaporimeter from coolant outlet, by the liquid that evaporates from adjacent two pieces of stainless steel plates 9, the side of insulating supporting dividing plate 2 and two insulated enclosure circle formation and lower openings are left vaporization chamber 30 and are entered gas-liquid separation space 6, gas-liquid separation is there is in gas-liquid separation space 6, indirect steam and concentrate leave housing 1 from indirect steam outlet 8 and concentrated solution outlet 7 respectively, by further Collection utilization.
The liquid distributing method of described cloth liquid aperture is: liquid enters the bar shaped inlet 20 of plate type falling-film heat exchanger 4 from liquid-inlet 2, in vaporization chamber 30 side, upper insulated enclosure pad 21 by bar shaped inlet 20 around, liquid cannot directly be fallen, the space formed due to inlet opening insulated enclosure pad 26 in condensation chamber 29 side is greater than the space of bar shaped inlet 20, liquid enters vaporization chamber 30 by cloth liquid aperture 27 overflow on stainless steel plate 9, thus forms film evaporation device on stainless-steel sheet sheet 9.
Below in conjunction with instantiation, the utility model is set forth, but the utility model can not be limited by any way.
This example mesohigh supply voltage is 20-25kv, distance between plates is 10mm, by the apparatus and method in detailed description of the invention, 2.8-3.5 times of Results to be the evaporation capacity in the unit time the be vaporising device not applying electric field, electric field energy consumption is only about 0.1% of heat output.
Claims (4)
1. an electric field-enhanced plate type falling-film vaporising device, it is characterized in that comprising housing (1), liquid-inlet (2), insulating supporting dividing plate (3), plate type falling-film heat exchanger (4), condensation-water drain (5), gas-liquid separation space (6), concentrated solution outlet (7), indirect steam outlet (8), stainless steel plate (9), inlet steam space (10), baffle plate (11), steam inlet (12), high-tension electricity polar curve (13A), earth electrode line (13B), insulator foot (14), polytetrafluoroethylene (PTFE) shaped spiral housing (15), high voltage source (16), insulator (17), tight loop (18), conducting rod (19), epirelief insulated enclosure pad (21), insulated enclosure circle (22), inlet opening insulated enclosure pad (26), lower convex insulated enclosure pad (28), condensation chamber (29), vaporization chamber (30),
Be provided with plate type falling-film heat exchanger (4) in housing (1), insulating supporting dividing plate (3) is fixed on housing (1), and is divided into inlet steam space (10), gas-liquid separation space (6) upper and lower two parts around plate type falling-film heat exchanger (4);
Housing upper and lower part sidewall is provided with liquid-inlet (2), condensation-water drain (5) and steam inlet (12), indirect steam outlet (8), and liquid-inlet (2), condensation-water drain (5) are connected with plate type falling-film heat exchanger (4);
Case top is provided with insulator foot (14), insulator foot upper end is connected with polytetrafluoroethylene (PTFE) shaped spiral housing (15) by tight loop (18), polytetrafluoroethylene (PTFE) shaped spiral housing upper end is provided with insulator (17), high voltage source (16) is connected with stainless steel plate (9) by insulator, conducting rod (19), high-tension electricity polar curve (13A), housing bottom is provided with concentrated solution outlet (7), and housing is by earth electrode line ground connection;
Between two stainless steel plates, top is provided with inlet opening insulated enclosure pad, bottom is provided with lower convex insulated enclosure pad composition condensing unit, between two stainless steel plates, top is provided with epirelief insulated enclosure pad, bottom is provided with two insulated enclosure circle composition evaporation elements, the position of the upper end of lower convex insulated enclosure pad, the position of the lower end of epirelief insulated enclosure pad and the centre position of insulating supporting dividing plate maintain an equal level, plate type falling-film heat exchanger (4) is by the baffle plate (11) of both sides and condensing unit, evaporation element interval repeats to be formed by stacking, wherein, adjacent condensing unit and evaporation element share one piece of stainless steel plate.
2. according to the electric field-enhanced plate type falling-film vaporising device of the one described in claim 1, it is characterized in that, described stainless steel plate (9) is provided with bar shaped inlet (20), a K cloth liquid aperture (27) and two condensation-water drains (23), cloth liquid aperture (27) is positioned at the below of bar shaped inlet (20), the span of diameter 2-4mm, K is 6-12.
3. according to the electric field-enhanced plate type falling-film vaporising device of the one described in claim 1, it is characterized in that, described high voltage source (16) is dc source, and the voltage max that can provide is 30kV.
4. according to the electric field-enhanced plate type falling-film vaporising device of the one described in claim 1, it is characterized in that, the every odd number sheet of described stainless steel plate is connected with high voltage source (16) by high-tension electricity polar curve (13A), and every even number sheet is by earth electrode line (13B) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746514.7U CN204293893U (en) | 2014-12-03 | 2014-12-03 | A kind of electric field-enhanced plate type falling-film vaporising device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746514.7U CN204293893U (en) | 2014-12-03 | 2014-12-03 | A kind of electric field-enhanced plate type falling-film vaporising device |
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| CN204293893U true CN204293893U (en) | 2015-04-29 |
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| CN201420746514.7U Withdrawn - After Issue CN204293893U (en) | 2014-12-03 | 2014-12-03 | A kind of electric field-enhanced plate type falling-film vaporising device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399265A (en) * | 2014-12-03 | 2015-03-11 | 浙江大学 | Electric field enhanced plate type falling film evaporation device and method |
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2014
- 2014-12-03 CN CN201420746514.7U patent/CN204293893U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399265A (en) * | 2014-12-03 | 2015-03-11 | 浙江大学 | Electric field enhanced plate type falling film evaporation device and method |
| CN104399265B (en) * | 2014-12-03 | 2016-01-27 | 浙江大学 | A kind of electric field-enhanced plate type falling-film vaporising device and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20160127 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |