CN203558879U - Brine circulation multi-effect evaporation sea water desalination device - Google Patents
Brine circulation multi-effect evaporation sea water desalination device Download PDFInfo
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- CN203558879U CN203558879U CN201320611551.2U CN201320611551U CN203558879U CN 203558879 U CN203558879 U CN 203558879U CN 201320611551 U CN201320611551 U CN 201320611551U CN 203558879 U CN203558879 U CN 203558879U
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- condensers
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- 239000013535 sea water Substances 0.000 title claims abstract description 101
- 239000012267 brine Substances 0.000 title claims abstract description 49
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 49
- 238000001704 evaporation Methods 0.000 title claims abstract description 35
- 230000008020 evaporation Effects 0.000 title claims abstract description 35
- 238000010612 desalination reaction Methods 0.000 title abstract description 5
- 230000000694 effects Effects 0.000 claims abstract description 71
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000011033 desalting Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004064 recycling Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009897 systematic effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000035924 thermogenesis Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a brine circulation multi-effect evaporation sea water desalination device, belonging to the technical field of seawater desalination. The device comprises a plurality of evaporators/condensers, each one is an effect, a part of strong brine of the last effect flows in evaporators/condensers of all effects in a parallel connection manner after being mixed with fresh sea water. Alternatively, the brine circulation multi-effect evaporation sea water desalination device comprises a plurality of groups of evaporators/condensers, sea water flows in evaporators/condensers of each group in a parallel connection manner, sea water discharged of the last effect of the former group is used as spray sea water of all effects of next group, and a part of strong brine of the last effect of the last group flows in all effects of the first group in a parallel connection manner after being mixed with fresh sea water. A part of finally produced strong brine at a higher temperature is introduced into the device again for circulation, the spray density of sea water is improved, the reasonable matching problem of the spray density and concentration ratio can be solved, in addition, the thermal utilization rate of the device can be improved, the heat exchange area of the evaporators/condensers can be reduced, and the space and materials can be saved.
Description
Technical field
The utility model relates to a kind of brine recycling desalting seawater through multi-effect evaporation device, belongs to field of sea water desalting technology.
Background technology
At present, the strong brine that last effect evaporator/condensers of existing desalting seawater through multi-effect evaporation device produces is in the world direct discharger all.
Heating steam enters in the first effect evaporator/condensers heat transfer tube, the outer spray of heating tube and under seawater, shell-side charging seawater is sprayed onto outside horizontal heat transfer tube bank by seawater spraying device, seawater is being restrained outside because the falling liquid film that action of gravity forms level pipe surface flows, seawater is heated in falling liquid film flow process so that part evaporation of seawater generates water vapour, i.e. secondary steam.Secondary steam between tube bank or outside flow to the bobbin carriage of this evaporator/condensers, as the admission thermal source of next effect evaporator/condensers, start the heat transfer process of next effect evaporator/condensers.Heating steam and secondary steam are understood heat release and are condensed into water during seawater outside heating tube in pipe, and each imitates evaporator/condensers by that analogy.For fear of seawater fouling on heat-transfer surface, adopt low-temperature evaporation technology, each is imitated in evaporator/condensers all in vacuum state.
Shell-side charging seawater or fresh seawater, or the seawater that improved by the salinity of gained after thermogenesis secondary steam of the seawater in last group of evaporator/condensers.Improved by the sea water salinity after thermogenesis secondary steam, different according to seawater charging Process flow, this concentrated seawater or be disposed to successively next effect evaporator/condensers bottom until imitate evaporator/condensers to last and be discharged from outside device, or by spray to next group evaporator/condensers, as heated object be heated again produce secondary steam, salinity improves again.No matter adopt any charging flow process, outside the equal discharger of strong brine that last effect evaporator/condensers produces.
This in the end strong brine that an effect evaporator/condensers produces does not recycle but the direct desalting seawater through multi-effect evaporation device outside discharger, need to provide larger amounts of preheat for charging seawater, the heat of strong brine does not effectively utilize, for Miniature seawater desalination device, concentration ratio and the specific liquid rate of seawater do not reach optimum matching, and the heat utilization efficiency of system is lower.
Summary of the invention
In order to solve problems of the prior art, the utility model provides a kind of brine recycling desalting seawater through multi-effect evaporation device, this device should not increase under the prerequisite of charging fresh seawater amount, increase the spray flux of vaporizer seawater, make its rational Match that reaches best specific liquid rate and concentration ratio, enhancement of heat transfer effect; Under the prerequisite of assurance device antiscale, improve the brine discharge concentration of device, reduce the energy consumption of fresh seawater pump, reduce seawater preheating energy expenditure, reduce heat extraction loss, improve system thermal efficiency.
The technical solution adopted in the utility model is: a kind of brine recycling desalting seawater through multi-effect evaporation device, comprise a plurality of evaporator/condensers, each evaporator/condensers is called an effect, heating steam enters successively and respectively imitates evaporator/condensers with series system, the seawater that salinity improves in last effect evaporator/condensers enters next effect evaporator/condensers bottom, the strong brine of last effect evaporator/condensers is discharged this effect evaporator/condensers, after a part of strong brine that described last effect evaporator/condensers is discharged mixes with fresh seawater, described in connecting with parallel way by pipeline, respectively imitate the spray interface of evaporator/condensers.
Another kind of brine recycling desalting seawater through multi-effect evaporation device, comprise many group evaporator/condensers, every group of evaporator/condensers comprises a plurality of multiple-effect evaporation/condensers, each evaporator/condensers is called an effect, heating steam enters the multiple-effect evaporation/condenser of each group successively with series system, first group respectively imitate the last effect evaporator/condensers in evaporator/condensers in the seawater that improves of salinity enter next effect evaporator/condensers bottom, the evaporator/condensers of respectively imitating that the seawater that the salinity producing in last group of last effect evaporator/condensers improves replaces fresh seawater to enter next group with parallel way sprays, last strong brine of organizing last effect evaporator/condensers is discharged this effect evaporator/condensers, after described a part of strong brine that last organizes last effect evaporator/condensers discharge mixes with fresh seawater, by pipeline, with parallel way, connect the spray interface of respectively imitating evaporator/condensers of described first group.
The beneficial effects of the utility model are: this brine recycling desalting seawater through multi-effect evaporation device is comprised of a plurality of evaporator/condensers, its last effect evaporator/condensers a part of strong brine mix with fresh seawater after, with parallel way, enter and respectively imitate evaporator/condensers.Another kind of brine recycling desalting seawater through multi-effect evaporation device forms by organizing evaporator/condensers more, every group of evaporator/condensers comprises a plurality of evaporator/condensers, after last a part of strong brine of organizing last effect evaporator/condensers mixes with fresh seawater, the evaporator/condensers of respectively imitating that enters first group with parallel way sprays.Because above-mentioned sea water desalinating plant is reintroduced back to the higher a part of concentrated seawater of temperature finally producing in device and circulates, the specific liquid rate of seawater is improved, solved the Rational Matching of specific liquid rate and concentration ratio, simultaneously, effectively utilize the heat of device, improved the heat utilization efficiency of device, improved the heat exchange property of evaporator/condensers, the heat interchanging area of evaporator/condensers be can reduce, space and material saved.
Accompanying drawing explanation
The systematic schematic diagram of the brine recycling desalting seawater through multi-effect evaporation device that Fig. 1 is comprised of a plurality of evaporator/condensers.
Fig. 2 forms by organizing evaporator/condensers more, the systematic schematic diagram of the brine recycling desalting seawater through multi-effect evaporation device that every group of evaporator/condensers comprises a plurality of evaporator/condensers.
Embodiment
Fig. 1 shows the systematic schematic diagram of the brine recycling desalting seawater through multi-effect evaporation device being comprised of a plurality of evaporator/condensers.In figure, brine recycling desalting seawater through multi-effect evaporation device comprises a plurality of evaporator/condensers, heating steam enters successively and respectively imitates evaporator/condensers with series system, the seawater that salinity improves in last effect evaporator/condensers enters next effect evaporator/condensers bottom, the strong brine of last effect evaporator/condensers is discharged this effect evaporator/condensers, after it mixes with fresh seawater, with parallel way, enter and respectively imitate evaporator/condensers and spray.
In each effect evaporator/condensers, the strong brine that the seawater spraying device on tube bank top produces last effect evaporation/cooler is evenly sprayed onto in tube bank with the mixed seawater that mixes of fresh seawater, mixing seawater is heated by working steam and part evaporation in the first effect evaporator/condensers, the water vapour generating is that secondary steam enters next effect evaporator/condensers as heat source, the mixing seawater of spray is respectively imitated the Secondary-steam heating being produced by last effect in evaporator/condensers and partly evaporates at all the other, in each effect evaporator/condensers, the mixing seawater of spray is after part evaporation, salinity increases, enter successively next effect evaporator/condensers bottom, until last effect, a part of strong brine of its discharge mixes with the fresh seawater that the temperature from condenser raises to some extent, enter the spray equipment of respectively imitating evaporator/condensers, outside remaining strong brine is exhausted from system.
Fig. 2 shows by the systematic schematic diagram of organizing the brine recycling desalting seawater through multi-effect evaporation device that evaporator/condensers forms, every group of evaporator/condensers comprises a plurality of evaporator/condensers more.In figure, brine recycling desalting seawater through multi-effect evaporation device comprises many group evaporator/condensers, every group of evaporator/condensers is comprised of many each evaporator/condensers, heating steam enters the multiple-effect evaporation/condenser of each group successively with series system, first group respectively imitate the last effect evaporator/condensers in evaporator/condensers in the seawater that improves of salinity enter next effect evaporator/condensers bottom, the evaporator/condensers of respectively imitating that the seawater that the salinity of discharging in last group of last effect evaporator/condensers improves replaces fresh seawater to enter next group with parallel way sprays, last strong brine of organizing last effect evaporator/condensers is discharged this effect evaporator/condensers, after part strong brine mixes with fresh seawater, the evaporator/condensers of respectively imitating that enters first group with parallel way sprays.
In first group of evaporator/condensers, the strong brine that each seawater spraying device of imitating evaporator/condensers tube bank top is organized last effect evaporator/condensers generation by last is evenly sprayed onto first group respectively imitating in evaporator/condensers tube bank with the mixed seawater that mixes of fresh seawater, mixing seawater is heated steam heating and part evaporation in the first effect evaporator/condensers, at all the other, respectively imitate the Secondary-steam heating being produced by last effect evaporator/condensers in evaporator/condensers and partly evaporate, the seawater that the salinity producing in evaporator/condensers first group respectively imitate improves is introduced next effect evaporator/condensers bottom flash distillation successively, until to first group last effect evaporator/condensers, the seawater increasing to some extent because of secondary steam generation salinity bottom it is introduced into second group respectively imitating in evaporator/condensers, through seawater spraying device, be evenly sprayed onto second group respectively imitating in evaporator/condensers tube bank, by the Secondary-steam heating from a upper effect evaporator/condensers, part evaporation of seawater, concentration of seawater improves again, by that analogy, until last group evaporator/condensers.In the end in one group of last effect evaporator/condensers, from the higher concentrated seawater of concentration of last group of last effect evaporator/condensers via spray equipment outside tube bank by the Secondary-steam heating from last effect evaporator/condensers, the steam producing after part evaporation enters condenser condenses becomes product water, each condensed water of imitating in evaporation/condensation organ pipe also enters condenser as product water, a part of strong brine that last effect evaporator/condensers of last group produces mixes with the fresh seawater that the temperature from condenser raises to some extent, enter the spray equipment of respectively imitating evaporator/condensers of first group, outside remaining strong brine is exhausted from system.
Adopt above-mentioned technical scheme, no matter adopt which kind of seawater charging form, the concentrated seawater in the end producing in an effect is not outside direct discharger, but the fresh seawater that wherein temperature a part of and from condenser raises is to some extent mixed, fresh seawater temperature after mixing further raises, and circulation strong brine amount requires to determine according to the required concentration ratio of system and sprayed sea water amount, with the circulation that does not have strong brine to mix, compares, its specific liquid rate can significantly improve, outside all the other strong brine dischargers.
This sea water desalinating plant has overcome the outer and shortcoming of the heat waste that causes of the direct discharger of strong brine that original last effect evaporator/condensers produces, reduce heat extraction loss, reduce the energy consumption of fresh seawater pump, reduce seawater preheating energy expenditure, importantly realized the rational Match of specific liquid rate and concentration ratio, there is raising system heat utilization efficiency, when reducing flooding quantity, increase seawater spraying density, strengthen heat exchange efficiency, reduce system architecture size, save the advantages such as material, effectively economy system takes up an area space, especially in Small-sized Marine desalting seawater through multi-effect evaporation device, there is clear superiority.
Claims (2)
1. a brine recycling desalting seawater through multi-effect evaporation device, comprise a plurality of evaporator/condensers, each evaporator/condensers is called an effect, heating steam enters successively and respectively imitates evaporator/condensers with series system, the seawater that salinity improves in last effect evaporator/condensers enters next effect evaporator/condensers bottom, the strong brine of last effect evaporator/condensers is discharged, it is characterized in that: after a part of strong brine that described last effect evaporator/condensers is discharged mixes with fresh seawater, described in connecting with parallel way by pipeline, respectively imitate the spray interface of evaporator/condensers.
2. a brine recycling desalting seawater through multi-effect evaporation device, comprise many group evaporator/condensers, every group of evaporator/condensers comprises a plurality of multiple-effect evaporation/condensers, each evaporator/condensers is called an effect, heating steam enters the multiple-effect evaporation/condenser of each group successively with series system, first group respectively imitate the last effect evaporator/condensers in evaporator/condensers in the seawater that improves of salinity enter next effect evaporator/condensers bottom, the evaporator/condensers of respectively imitating that the seawater that the salinity producing in last group of last effect evaporator/condensers improves replaces fresh seawater to enter next group with parallel way sprays, last strong brine of organizing last effect evaporator/condensers is discharged this effect evaporator/condensers, it is characterized in that: after described a part of strong brine that last organizes last effect evaporator/condensers discharge mixes with fresh seawater, by pipeline, with parallel way, connect the spray interface of respectively imitating evaporator/condensers of described first group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320611551.2U CN203558879U (en) | 2013-10-02 | 2013-10-02 | Brine circulation multi-effect evaporation sea water desalination device |
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| CN201320611551.2U CN203558879U (en) | 2013-10-02 | 2013-10-02 | Brine circulation multi-effect evaporation sea water desalination device |
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| CN203558879U true CN203558879U (en) | 2014-04-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508501A (en) * | 2013-10-02 | 2014-01-15 | 大连理工大学 | Salt water circulating multiple-effect evaporation seawater desalination device |
| CN110316779A (en) * | 2019-06-26 | 2019-10-11 | 浙江万里学院 | Energy-efficient bitter/desalination plant |
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2013
- 2013-10-02 CN CN201320611551.2U patent/CN203558879U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508501A (en) * | 2013-10-02 | 2014-01-15 | 大连理工大学 | Salt water circulating multiple-effect evaporation seawater desalination device |
| CN110316779A (en) * | 2019-06-26 | 2019-10-11 | 浙江万里学院 | Energy-efficient bitter/desalination plant |
| CN110316779B (en) * | 2019-06-26 | 2021-11-19 | 浙江万里学院 | High-efficiency energy-saving brackish water/seawater desalination device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20181002 |