CN201610388U - Falling-film condenser for sea water desalinization - Google Patents
Falling-film condenser for sea water desalinization Download PDFInfo
- Publication number
- CN201610388U CN201610388U CN2009203507012U CN200920350701U CN201610388U CN 201610388 U CN201610388 U CN 201610388U CN 2009203507012 U CN2009203507012 U CN 2009203507012U CN 200920350701 U CN200920350701 U CN 200920350701U CN 201610388 U CN201610388 U CN 201610388U
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- China
- Prior art keywords
- heating surface
- heat transfer
- surface bank
- transfer tube
- water
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000013535 sea water Substances 0.000 title claims abstract description 39
- 239000011552 falling film Substances 0.000 title claims abstract description 16
- 238000013517 stratification Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 44
- 238000007872 degassing Methods 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 239000006200 vaporizer Substances 0.000 description 9
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000004821 distillation Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model belongs to the field of sea water desalinization, and relates to a falling-film condenser for sea water desalinization. The falling-film condenser comprises a shell, as well as water distribution devices, heat transfer tube banks and water receiving trays which are arranged inside the shell, wherein the heat transfer tube banks are arranged inside the shell in a way of horizontal stratification, so that heat transfer tube bank layers can be formed; one water distribution device is arranged above each heat transfer tube bank layer; the water receiving trays are arranged among the different heat transfer tube bank layers; and the heat transfer tube banks are horizontally arranged, and gaps are reserved among the heat transfer tube banks. The falling-film condenser can be used for preheating and degassing the fed sea water, thus improving the condensing heat exchange efficiency of an evaporator, relieving the corrosion to equipment and reducing the water producing cost.
Description
Technical field
The utility model belongs to the sea water desaltination field, is specifically related to a kind of sea water desaltination falling film type condenser.
Background technology
Contain incondensable gases such as a certain amount of oxygen in the seawater.When adopting multi-effect distillation system to carry out sea water desaltination, incondensable gas can be overflowed in the vaporizer heat transfer process.In addition, multi-effect distillation system generally operates under the vacuum, and the small part air also can bleed becomes non-condensable gas in the vaporizer.The existence of non-condensable gas has reduced the condensation heat transfer efficient of vaporizer, and the existence meeting of oxygen simultaneously significantly increases the galvanic corrosion of heating surface bank, housing internals.Vacuum extractor is used for extracting out non-condensable gas, guarantees the operation vacuum tightness of system.Can carry a certain proportion of steam secretly when vacuum extractor is extracted non-condensable gas out, the size of non-condensable gas amount is with the load of decision pumped vacuum systems.In the common technical scheme, the seawater introducing vaporizer that do not outgas, vaporizer must use high level corrosion-resistant material to make heat-exchanging tube bundle, housing and internals, dispose jumbo vacuum extractor, in time extract non-condensable gas out in conjunction with a plurality of bleeding points are set, equipment and running cost will be increased.For the heat transfer efficiency and the operation vacuum tightness that guarantee vaporizer, multi-effect distillation system needs in time noncondensable gas to be extracted out.The scheme that the pump circulation condenser of the logical refrigerated sea water of employing tube side adds degassing tower can realize seawater preheating degassing problem, but seawater pump circulation current consumption is big, global design system complex, cost height.
Summary of the invention
At above problem, the utility model provides a kind of sea water desaltination falling film type condenser, solves seawater degassing problem, reduces cost.
Falling film type condenser of the present utility model comprises housing and be arranged on the intravital water-distributing device of shell, heating surface bank and drip tray, and heating surface bank is made up of heat transfer tube, and heat transfer tube quantity is determined through Calculation of Heat Transfer according to the quantity of steam and the water spray of condensation; Wherein, described heating surface bank is the horizontal stratification setting in housing, forms the heating surface bank layer, and is provided with water-distributing device above each heating surface bank layer, between the different heating surface bank layers drip tray is set.A large amount of refrigerated sea waters can be efficiently handled in the stratified design of heating surface bank in the space of compactness, can be under the certain situation of sprayed sea water temperature, effectively utilize the temperature difference between condensed steam and the seawater, enhancement of heat transfer, wherein the area of drip tray is greater than the horizontal distribution area of the heating surface bank layer of its top.
Heating surface bank layer described in the utility model can be as required the condensing temperature and seawater temperature between the size of the temperature difference be provided with, for example can be 2,3,4 or 5 layers of heating surface bank layer.
As embodiment preferred, every layer heating surface bank layer can comprise 2-6 heating surface bank; The interbank space of leaving is so that the effusion of non-condensable gas.
Falling film type condenser of the present utility model is connected with charging seawater pipe, receives the charging seawater; Be connected with condensate pipe, discharge water of condensation; Be connected with preheating degassing seawater pipe, the seawater after the preheating degassing is sent into each single-effect evaporator.
Falling film type condenser of the present utility model is connected respectively with last evaporator with vacuum extractor.
Usefulness of the present utility model is: the utility model falling film type condenser makes the charging seawater obtain preheating outside the condenser heating surface bank, cooperate vacuum extractor, non-condensable gas in the seawater is removed, thereby significantly promote the heat exchange efficiency of vaporizer in the evaporation of seawater link, increase operational efficiency and reliability; After removing non-condensable gas, can reduce corrosive and take place, therefore can use cheap material to make the housing and the heat-transfer pipe of vaporizer, reduce system cost.Falling film type condenser pump merit consumes little, can reduce the consumption of the product water of sea water desaltination to pump function electricity.
Description of drawings
Fig. 1 is a cross section structure synoptic diagram of the present utility model,
Fig. 2 is a vertical section structure synoptic diagram of the present utility model,
Wherein 1 among Fig. 1 and Fig. 2 is housing, the 2nd, and water-distributing device, the 3rd, heating surface bank, the 4th, drip tray, the 5th, vacuum extractor, the 6th, charging seawater pipe, the 7th, preheating degassing seawater pipe, the 8th, condensate pipe, the 9th, heat transfer tube.
Embodiment
Now further specify the utility model with embodiment in conjunction with the accompanying drawings, but the utility model is not limited to this.
As depicted in figs. 1 and 2, falling film type condenser of the present utility model comprises housing 1 and water-distributing device 2, heating surface bank 3 and drip tray 4, and heating surface bank 3 is made up of heat transfer tube 9.Two-layer heating surface bank layer is arranged in the housing 1, and every layer of heating surface bank layer comprises three heating surface banks 3, and heating surface bank 3 is horizontally disposed, leaves the space each other, so that the effusion of non-condensable gas.Water-distributing device 2 is set above each heating surface bank layer, is provided with drip tray 4 between the two-layer heating surface bank layer, be used to accept the seawater that compiles through the upper strata heating surface bank preheating degassing.The stratified design of heating surface bank can efficiently be handled a large amount of refrigerated sea waters in the space of compactness, under the certain situation of sprayed sea water temperature, each heating surface bank layer can effectively utilize the carbonated drink temperature difference, enhancement of heat transfer.
During work, seawater enters condenser by charging seawater pipe 6, sprays to heating surface bank 3 by water-distributing device 2, forms falling liquid film and flows, and obtains bigger surface-area.Be the part steam that last evaporator transports in the heating surface bank 3, in heating surface bank 3, obtain condensation, heat the seawater outside the heating surface bank 3 simultaneously.Seawater is after heating, and non-condensable gas is overflowed, and is extracted out by vacuum extractor 5.Seawater after the upper strata heating surface bank preheating degassing is compiled by drip tray 4, is directly accepted by housing 1 through the seawater of lower floor's heating surface bank preheating degassing and compiles, and the seawater of the preheating degassing enters in the vaporizer by preheating degassing seawater pipe 7 and evaporates.Steam condensate is discharged by condensate pipe 8 in the heating surface bank 3.
Claims (3)
1. sea water desaltination falling film type condenser, comprise housing and be arranged on the intravital water-distributing device of shell, heating surface bank and drip tray, it is characterized in that, described heating surface bank is the horizontal stratification setting in housing, form the heating surface bank layer, and each heating surface bank layer top is provided with water-distributing device, between the different heating surface bank layers drip tray is set.
2. falling film type condenser according to claim 1 is characterized in that, the area of drip tray is greater than the horizontal distribution area of the heating surface bank layer of top.
3. falling film type condenser according to claim 1 and 2 is characterized in that, is horizontally disposed with 2-5 heating surface bank layer in housing, and each heating surface bank layer comprises 2-6 heating surface bank, leaves the space between heating surface bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203507012U CN201610388U (en) | 2009-12-25 | 2009-12-25 | Falling-film condenser for sea water desalinization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203507012U CN201610388U (en) | 2009-12-25 | 2009-12-25 | Falling-film condenser for sea water desalinization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610388U true CN201610388U (en) | 2010-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203507012U Expired - Lifetime CN201610388U (en) | 2009-12-25 | 2009-12-25 | Falling-film condenser for sea water desalinization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
| CN104828890A (en) * | 2015-04-24 | 2015-08-12 | 哈尔滨工业大学深圳研究生院 | Sun-drying type seawater desalination device having active condensation function and method |
| CN114804266A (en) * | 2022-05-18 | 2022-07-29 | 天津国投津能发电有限公司 | Falling film condenser of low-temperature multi-effect distillation seawater desalination system |
-
2009
- 2009-12-25 CN CN2009203507012U patent/CN201610388U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
| CN104828890A (en) * | 2015-04-24 | 2015-08-12 | 哈尔滨工业大学深圳研究生院 | Sun-drying type seawater desalination device having active condensation function and method |
| CN114804266A (en) * | 2022-05-18 | 2022-07-29 | 天津国投津能发电有限公司 | Falling film condenser of low-temperature multi-effect distillation seawater desalination system |
| CN114804266B (en) * | 2022-05-18 | 2023-02-28 | 天津国投津能发电有限公司 | Falling film condenser of low-temperature multi-effect distillation seawater desalination system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101020 |