CN2934211Y - Water desalination low temperature multi-effect device - Google Patents
Water desalination low temperature multi-effect device Download PDFInfo
- Publication number
- CN2934211Y CN2934211Y CNU2006201237778U CN200620123777U CN2934211Y CN 2934211 Y CN2934211 Y CN 2934211Y CN U2006201237778 U CNU2006201237778 U CN U2006201237778U CN 200620123777 U CN200620123777 U CN 200620123777U CN 2934211 Y CN2934211 Y CN 2934211Y
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- temperature
- vaporizer
- effect device
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- sea water
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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
Abstract
The utility model discloses a sea water desalination low temperature multiple effect device comprising a tank arranged with some evaporators with different evaporating temperature that are arranged in sequence based on the evaporating temperature. The evaporating pipe hollow space of the evaporator with the highest temperature is connected to the heat source vapor system. Pumps are arranged between neighboring evaporators. Spraying system is provided on the tank wall above the evaporators. Due to the application of heat source vapor produced by the solar heater, the utility model can save energy and lower operation cost greatly. Additionally, the equipment cost and maintenance cost can be lowered due to the formation of evaporator with a plurality of rows of evaporating pipes made of new composite non-metallic materials.
Description
Technical field
The utility model relates to a kind of sea water desalinating plant.
Background technology
In today that water resources lacks day by day, desalination technology also reaches its maturity, and mainly comprises low-temperature multi-effect multistage flash evaporation distillation method and reverse osmosis membrane two big desalination technologies.
Multistage flash evaporation distillation sea water desalting technology is the mainstream technology of the 1950's to the mid-80, and progress to some extent but does not have important breakthrough in recent years, and the ton water consumption is still about 10 kilowatt-hours, and fouling and etching problem are serious.It has the big characteristics of single-machine capacity.
The low-temperature multiple-effect distillation sea water desalting technology starts from late 1970s, utilizes weary steam to make water combining with power plant, realizes that there are certain advantage and market potential in water power coproduction aspect, and developed recently is very fast.About 70 ℃ of its high evaporation temperature decreases fouling and corrosion, and can use cheap material, reduces the desalination water cost, and the ton water consumption is at 6 kilowatt-hour/cubic meters～8 kilowatt-hour/cubic meters.
The reverse osmosis membrane desalination technology is present fastest-rising method for desalting seawater, have construction investment and make the water cost lower, characteristics such as device is compact, floor space is little, and is simple to operate, easy to maintenance.But the pre-treatment of reverse osmosis membrane desalination technology is strict, and reverse osmosis membrane needs periodic replacement, needs heat treated under the low situation of seawater temperature.
The low temperature multiple-effect distillation sea water desalting technology is utilized the low grade residual heat of power plant, the distilled water of production based on very high purity (＜10ppm), with process water or large-scale municipal water supply as the additional water of boiler, production process.The problem of low-temperature multiple-effect seawater desalination technology existence at present is that cost height, working cost are also high, the reason that cost is high is: the shell of heat extraction condenser, vaporizer, generating tube and equipment adopts etch-proof metallic substance, the reason that working cost is high is to adopt power plant's steam, has influenced the utilization ratio of steam.
The utility model content
At above-mentioned present situation, the purpose of this utility model is to provide that a kind of cost is low, working cost is low, the sea water desaltination low-temperature multi-effect device of save energy.
For achieving the above object, technical solution of the present utility model is:
A kind of sea water desaltination low-temperature multi-effect device, this device comprises tank body, be provided with some grades of different vaporizers of vaporization temperature in the tank body, these some grades of vaporizers just are arranged in order by vaporization temperature, the generating tube inner chamber of temperature vaporizer at the highest level connects the thermal source steam system, be provided with water pump between described every adjacent vaporizer, and above described vaporizers at different levels, be equipped with sprinkling system on the tank wall.
Further, described vaporizer at different levels is formed by plurality of rows non-metallic material generating tube.
Further, the generating tube of the minimum one-level vaporizer of described temperature connects solar heater through heat exchanger.
Further, the minimum one-level vaporizer upstream of described temperature is provided with the heat extraction condenser.
After adopting said structure,, working cost is reduced greatly because therefore the thermal source steam that adopts solar heater to produce saved the energy greatly.In addition, because the generating tube that vaporizers at different levels are made by the novel synmetal of many rows is formed, equipment cost and maintenance cost have been reduced.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment:
As shown in Figure 1, the utility model sea water desaltination low-temperature multi-effect device comprises tank body A, be provided with the cryogenic vaporizer 1 that connects successively in this tank body, in warm vaporizer 2, high-temperature evaporator 3, vaporizers at different levels are formed by interconnective many row's generating tubes, the generating tube inner chamber of high-temperature evaporator 3 connects thermal source steam, be provided with water pump 4 between described cryogenic vaporizer 1 and the middle temperature vaporizer 2, in be provided with water pump 5 between warm vaporizer 2 and the high-temperature evaporator 3, and on the tank wall at described cryogenic vaporizer 1, in warm vaporizer 2, the top of high-temperature evaporator 3 is respectively equipped with sprinkling system 6, and this sprinkling system 6 can be selected common shower nozzle for use;
In the use, be provided with heat extraction condenser 7 in described cryogenic vaporizer 1 upstream, the charging seawater is preheated in heat extraction condenser 7 and outgases, be divided into two strands afterwards, one dumps and flows back to the sea as phlegma, one is as the feeding liquid of distillation process in addition, feeding liquid adds dirt dispersion agent after sprinkling system 6 sprays on the overhead coil of cryogenic vaporizer 1, along overhead coil downwards with form of film in the free-pouring process, part seawater is vaporized owing to having absorbed in vaporizer the latent heat of condensed steam, by slight spissated remaining feed liquid in water pump 4 is squeezed in the warm vaporizer 2, warm vaporizer 2 top sprinkling systems 6 spray on the overhead coil of middle temperature vaporizer 2 in the warp, along overhead coil downwards with form of film in the free-pouring process, part seawater is vaporized owing to having absorbed in vaporizer the latent heat of condensed steam, the remaining feed liquid that is further concentrated is squeezed in the high-temperature evaporator 3 through water pump 5, repeats above-mentioned evaporation and spray process.Above-mentioned vaporizer can be provided with some groups as required, and each vapor temperature of organizing in the evaporator evaporation pipe raises successively, and to the last feed liquid is left with the form of concentrated solution in the highest vaporizer of temperature.
Thermal source steam is at first imported the generating tube inside of high-temperature evaporator 3, and generation condensation in pipe, feeding liquid Absorption by Sea Water heat produces and the essentially identical evaporation of condensation number outside pipe simultaneously, the secondary steam that produces after the preliminary condensation of thermal source steam is after having passed the purity of strong brine droplet separator with assurance distilled water, in the generating tube of warm vaporizer 2, repeat to introduce in the generating tube of cryogenic vaporizer 1 behind the said process in being incorporated into again.
This evaporation and condensation process repeat along each effect of a string vaporizer always, and every effect has all produced a considerable amount of distilled water, are coagulated by the cooled with seawater liquid cooling in the heat extraction section to last one steam of imitating.
The generating tube of described cryogenic vaporizer 1, middle temperature vaporizer 2, high-temperature evaporator 3 adopts non-metallic material, can select macromolecule resin, quartz sand or ceramic and other composite material for use, these materials can antiacid caustic corrosion, have thermotolerance, uninflammability, can adapt to the different temperature difference, and performances such as crackle do not appear in material; Be exposed in the air and do not wear out, in material, increase specific material, it can be welded with miscellaneous equipment.
Temperature raises behind the high temperature heat source heat-shift that effusive Low Temperature Steam produces with solar-electricity hot plate 8 in heat exchanger in the generating tube of cryogenic vaporizer 1, with recycle.
First phlegma of imitating is collected, and the part of this distilled water turns back to vapour generator again, and the part that surpasses the living quantity of steam of input flow in the first container of a series of special containers, and each container all is connected to the condensation side that next low temperature is imitated.Make a part of distilled water produce flash distillation like this and remaining product water cooling is got off, heat is passed in the main body that recovery of heat imitates gone simultaneously.
The stepped mobile also quilt of product water like this is flash cooling step by step, and liberated heat has improved the total efficiency of system, and the distilled water that is cooled is extracted out and is input in the container for storing liquid with the product water pump at last.If this product water of producing is pure water completely.It does not contain any pollutent, and average saltiness is less than 20ppm.As distilled water, concentrated seawater is from a series of strong brine flash tank of the first stepped inflow of effect, and flash cooling is to reclaim its heat, and after overcooling, strong brine is squeezed into the sea through the strong brine pump.Non-condensable gases is extracted out from each root prolong, and flows to another effect from an effect.These non-condensable gasess are at last in the cold junction enrichment of heat extraction condenser, and extract out with steam injector or mechanical type vacuum pump.
Claims (4)
1, a kind of sea water desaltination low-temperature multi-effect device, it is characterized in that, this device comprises tank body, be provided with some grades of different vaporizers of vaporization temperature in the tank body, these some grades of vaporizers just are arranged in order by vaporization temperature, the generating tube inner chamber of temperature vaporizer at the highest level connects the thermal source steam system, is provided with water pump between described every adjacent vaporizer, and is equipped with sprinkling system on the tank wall above described vaporizers at different levels.
2, sea water desaltination low-temperature multi-effect device according to claim 1 is characterized in that described vaporizers at different levels are formed by plurality of rows non-metallic material generating tube.
3, sea water desaltination low-temperature multi-effect device according to claim 1 is characterized in that the generating tube of the minimum one-level vaporizer of described temperature connects solar heater through heat exchanger.
4, sea water desaltination low-temperature multi-effect device according to claim 1 is characterized in that the minimum one-level vaporizer upstream of described temperature is provided with the heat extraction condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201237778U CN2934211Y (en) | 2006-07-13 | 2006-07-13 | Water desalination low temperature multi-effect device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201237778U CN2934211Y (en) | 2006-07-13 | 2006-07-13 | Water desalination low temperature multi-effect device |
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| Publication Number | Publication Date |
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| CN2934211Y true CN2934211Y (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2006201237778U Expired - Lifetime CN2934211Y (en) | 2006-07-13 | 2006-07-13 | Water desalination low temperature multi-effect device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880102A (en) * | 2010-05-26 | 2010-11-10 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Low-temperature multi-effect sea water desalinization product water intermediate heat regenerative system |
| CN102092805B (en) * | 2009-12-14 | 2012-12-26 | 中国神华能源股份有限公司 | Low temperature multi-effect seawater desalting system |
| CN114940522A (en) * | 2022-05-31 | 2022-08-26 | 中国科学院电工研究所 | Solar interface evaporation seawater desalination system based on compound parabolic light condensation |
-
2006
- 2006-07-13 CN CNU2006201237778U patent/CN2934211Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092805B (en) * | 2009-12-14 | 2012-12-26 | 中国神华能源股份有限公司 | Low temperature multi-effect seawater desalting system |
| CN101880102A (en) * | 2010-05-26 | 2010-11-10 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Low-temperature multi-effect sea water desalinization product water intermediate heat regenerative system |
| CN101880102B (en) * | 2010-05-26 | 2012-10-17 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Low-temperature multi-effect sea water desalinization product water intermediate heat regenerative system |
| CN114940522A (en) * | 2022-05-31 | 2022-08-26 | 中国科学院电工研究所 | Solar interface evaporation seawater desalination system based on compound parabolic light condensation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070815 |
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| EXPY | Termination of patent right or utility model |