CN102815757A - Seawater desalination apparatus - Google Patents
Seawater desalination apparatus Download PDFInfo
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- CN102815757A CN102815757A CN201210289714XA CN201210289714A CN102815757A CN 102815757 A CN102815757 A CN 102815757A CN 201210289714X A CN201210289714X A CN 201210289714XA CN 201210289714 A CN201210289714 A CN 201210289714A CN 102815757 A CN102815757 A CN 102815757A
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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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Abstract
The present invention relates to a seawater desalination apparatus, which comprises an air humidification tower and an air dehumidifying tower, wherein the upper parts of the air humidification tower and the air dehumidifying tower are communicated, the humidification tower comprises a heating alignment pipe, a blasting device for providing air for the air humidification tower, a water entering port, a water distribution pipe communicated with the water entering port, and a seawater discharge port for discharging seawater in the air humidification tower, both ends of the heating alignment pipe are respectively provided with a heat source inlet for inputting exhausted steam of a thermal power plant and a heat source outlet for outputting the exhausted steam, a cooling alignment pipe and a fresh water discharge port are arranged inside the air dehumidifying tower, and both ends of the cooling alignment pipe are respectively provided with a water inlet and a water outlet. With the seawater desalination apparatus of the present invention, waste heat of thermal power plants can be effectively utilized to produce fresh water so as to significantly reduce seawater desalination cost.
Description
Technical field
The invention belongs to water-treatment technology field, relate in particular to sea water distiling plant.
Background technology
Because the shortage of Freshwater resources, the technology of sea water desaltination receive widely and paying close attention to.Because salt solution becomes fresh water, be that an entropy reduces process, can not spontaneous carrying out; Existing method for desalting seawater such as distillation method, reverse osmosis method, electroosmose process etc.; All need consume lot of energy, so just make that the Financial cost of sea water desaltination is too high, be unfavorable for widespread use.
As shown in Figure 1; Be the fundamental diagram of existing thermal power plant, thermal power plant is when generating, according to the second law of thermodynamics; It is electric power that the heat that fuel combustion in the boiler produces has only fractional conversion; And lack steam when condensation, and liberated heat has accounted for sets off more than 50% of heat, and this is huge waste heat.Present and the supporting capacity of boiler of 600MW power unit is 2008t/h; The latent heat of vaporization that general every kilogram of steam discharges during condensation in steamer is 2383～2424kj/kg; Therefore the heat that is discharged during the condenser condensation is about 1.145*109kcal/h (1cal=4.1840J); About 110,000 tons of water coolants are heated up 10 ℃, and this huge thermal source raises more than 8 ℃ the temperature of cooling water of power plant emission at least.Therefore,, used heat is effectively utilized, the cost of desalination is reduced significantly if can the waste heat of thermal power plant be used for sea water desaltination.
Summary of the invention
The device that technical problem to be solved by this invention is to provide a kind of waste heat that utilizes the weary steam in power station to carry out sea water desaltination.
The present invention is achieved in that provides a kind of sea water distiling plant, comprises air humidification tower and air dehumidification tower, and the top of said air humidification tower and air dehumidification tower is interconnected; Said air humidification tower comprises the heating tubulation, air-blast device, water-in, the water distributor that is communicated with said water-in of air is provided and supplies the seawater relief outlet of the seawater discharge in the said air humidification tower, the thermal source outlet that the two ends of said heating tubulation are respectively equipped with the thermal source inlet of the weary steam of input thermal power plant and export said weary steam to the air humidification tower; Be provided with cooling tubulation and fresh water relief outlet in the said air dehumidification tower, the two ends of said cooling tubulation are respectively equipped with water inlet and water outlet.
Further, water-in in the said air humidification tower and the seawater relief outlet position, top and the lower portion that lay respectively at said air humidification tower.
Further, said air humidification tower also comprises the shower nozzle that is installed on the said water distributor, and said water distributor is positioned at the inner position, top of said air humidification tower.
Further, the heating tubulation of said air humidification tower comprises conduit and is installed in said supravasal heating fin.
Further, said thermal source inlet and thermal source outlet lay respectively at the position, top and the lower portion of said air dehumidification tower; The weary steam of said thermal source inlet input thermal power plant; Said thermal source outlet is connected with a water separator, and said water separator is connected with the condensing surface in power station.
Further, the cooling tubulation of said air dehumidification tower comprises conduit and is installed in said supravasal radiating fin.
Further, said water inlet and water outlet lay respectively at the lower portion and the position, top of said air dehumidification tower; Said water inlet input depths seawater, said water outlet can be connected with the water-in on the air humidification tower, perhaps discharging.
Further, said fresh water relief outlet is positioned at the lower portion or the bottom of said air dehumidification tower.
Further, said air humidification tower surface and air dehumidification tower surface are equipped with thermal insulation layer.
Further, the lower portion of said air dehumidification tower also is provided with venting hole.Venting hole on the said dehumidification tower is connected with the inlet mouth of said air-blast device.
Compared with prior art, the device of sea water desaltination of the present invention can effectively utilize the waste heat of thermal power plant to make fresh water, and Cost of seawater desalination is reduced significantly.
Description of drawings
Fig. 1 is an existing thermal power plant fundamental diagram;
Fig. 2 is the fundamental diagram of the present invention's one preferred embodiment;
Fig. 3 is the structure principle chart of the present invention's one preferred embodiment.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention transforms on the basis of existing thermal power plant; As shown in Figure 2; Be fundamental diagram of the present invention, under the prerequisite that does not influence the normal operation of thermal power plant, from the weary steam that turbine is discharged, tell the sea water desaltination that one is used for sea water distiling plant of the present invention.Among Fig. 2, left-hand component is the equipment and the principle of work of existing thermal power plant, and conditioning tower, dehumidification tower section are sea water distiling plant of the present invention.
Particularly, as shown in Figures 2 and 3, be a preferred embodiment of the present invention, this sea water distiling plant comprises air humidification tower 100 and air dehumidification tower 200, the top of air humidification tower 100 and air dehumidification tower 200 is interconnected.
Air humidification tower 100 comprises water-in 101, water distributor 102, shower nozzle 103, air-blast device 104, seawater relief outlet 105 and heating tubulation 106.Water distributor 102 and shower nozzle 103 are positioned at the position, top of air humidification tower 100 inside; And be connected with water-in 101; In the present embodiment, the seawater of input water-in 101 can be the refrigerated sea water that sea seawater or air dehumidification tower cooler tubulation water outlet are discharged.Air-blast device 104 is positioned at the lower portion of air humidification tower 100, and seawater relief outlet 105 is located at the bottom or the lower portion of air humidification tower 100.Heating tubulation 106 is located at air humidification tower 100 inside; Heating tubulation 106 comprises conduit and is installed in supravasal radiating fin (indicating among the figure) that heat tubulation 106 upper ends and be provided with thermal source inlet 1061, the lower end is provided with thermal source outlet 1062; The weary steam that the thermal source of heating tubulation 106 is told for the power station turbine; Weary steam is flowed through from top to bottom and is heated tubulation 106, makes the seawater of heating tubulation 106 outsides and the temperature of air raise evaporation of seawater; The humidity of air increases, and forms the saturated hot wet air of comparatively high temps (for example 70 ° about C).In addition, air humidification tower 100 surfaces also are provided with thermal insulation layer 107, are used to prevent that the temperature in the air humidification tower from reducing.
Air dehumidification tower 200 inside are provided with cooling tubulation 201 and fresh water relief outlet 202.Cooling tubulation 201 comprises conduit and is installed in supravasal radiating fin (indicating among the figure) that cool off tubulation 201 belows and be provided with water inlet 2011, the top is provided with water outlet 2012; In the present embodiment; The heat-eliminating medium of cooling in the tubulation can be sea seawater or depths Mare Frigoris water (depths Mare Frigoris water preferably, because of its temperature is low, the temperature difference is big; Fresh water yield is high), depths Mare Frigoris glassware for drinking water body can be obtained or obtain through other prior aries through devices such as water pumps.Seawater gets into from water inlet 2011, and the cooling tubulation 201 of flowing through from bottom to up makes the cooling tubulation outer from the saturated hot wet air cooling of air humidification tower, and the water vapor condensation in the saturated hot wet air becomes dew, accumulates fresh water, discharges from water outlet.Fresh water relief outlet 202 is positioned at the lower portion or the bottom of air dehumidification tower 200.Air dehumidification tower 200 surfaces are provided with thermal insulation layer 203, are used to prevent that the temperature in the air dehumidification tower from raising.In addition, the below of air dehumidification tower 200 also is provided with venting hole 204.
Above-mentioned sea water distiling plant is when preparation fresh water, and seawater is sprayed in the air humidification tower 100 by shower nozzle 103 from the water distributor 102 that water-in 101 gets in the air humidification tower 100; And contact with air that air-blast device 104 drum is come in, make the atmospheric moistures increase in the air humidification tower 100, reach capacity; Heating through the heating tubulation makes evaporation of seawater, forms the saturated hot wet air of comparatively high temps; Saturated hot wet air in the tower is under the drive of air-blast device 104; Got in the air dehumidification tower 200 by air humidification tower 100, saturated hot wet air is cooled in air dehumidification tower 200 and becomes dew after tubulation 201 cools off, and accumulates fresh water and exports 202 outflows mutually from fresh water.
The seawater that does not evaporate in the above-mentioned conditioning tower 100 is discharged from seawater relief outlet 105.
In order to realize resource circulation utilization better, above-mentioned thermal source outlet 1062 can be connected with a water separator 300, and water separator 300 is connected with the condensing surface in power station simultaneously.Like this, the weary steam of discharging from the thermal source outlet 1062 of heating tubulation 106 carries out obtaining air and water of condensation after carbonated drink separates through water separator, and the air that obtains is capable of circulation in the condensing surface of thermal power plant, and the water of condensation that obtains is recyclable to be utilized again.
In addition, the venting hole 204 on the above-mentioned dehumidification tower 200 can be connected with the inlet mouth of air-blast device 104.Like this, the air in the air dehumidification tower 200 is discharged the back inlet mouth to air-blast device 104 capable of circulation from venting hole 204, thereby circulation is blown in the conditioning tower 100.Water outlet 2012 on the dehumidification tower 200 can be connected with the water-in 101 on the conditioning tower 100.Like this, from the seawater that cooling tubulation 201 water outlets 2012 are discharged, the water-in 101 that can get into air humidification tower 100 utilizes once more, helps improving the temperature that gets into air humidification tower maritime interior waters, increases the temperature of saturated hot wet air, improves fresh water yield.
Below, according to above-mentioned sea water distiling plant, lift several practical application examples and describe, in the following table under listed a plurality of temperature and the relative humidity condition absolute humidity value of air and enthalpy all from [the humid enthalpy figure of air]:
Example 1: route A → B1.Suppose that the sea AT is 30 ℃, relative air humidity is 60%, the A point of state point this moment in table 1, and absolute humidity is 16 gram/KG dry air, enthalpy is the 71KJ/KG dry air.At this moment, if with the depths seawater B1 point is arrived in this air cooling, i.e. supposition is cooled to 15 ℃, and (absolute humidity is 10.5 gram/KG dry air) will produce 16-10.5=5.5 gram dew, i.e. fresh water.In other words, this is cold former to have utilized the depths seawater, and consumed energy (except the energy of lifting, conveying seawater, air) just can not obtain fresh water.
Example 2: route A → B2 → B1.Suppose with 30 ℃ of seawater humidification air, make it saturated.Do not add heat, state will move to saturated line (relative humidity 100% line) intersection points B 2 points along insoenthalpic, and temperature will drop to 24 ℃ (absolute humidity is 18.5 gram/KG dry air).At this moment, if with the depths seawater it is cooled to the B1 point, i.e. supposition is cooled to 15 ℃, will produce 18.5-10.5=8 gram fresh water.In other words, this is cold former to have utilized the depths seawater, adds the humidification air event again, and consumed energy just can not obtain than above-mentioned routine more than 1 fresh water.
Example 3: route A → B3 → B2 → B1.Also supposition makes air saturated with 30 ℃ of seawater humidification air; Simultaneously, seawater has bigger heat, and air is not lowered the temperature basically, forms 30 ℃ saturated air, promptly arrives the B3 point (absolute humidity is 27 gram/KG dry air) in the table 1.With it cooling, cross B2 again, will obtain 27-10.5=16.5 gram fresh water, increase than above-mentioned routine 2 output to B1.In other words, heat by the air of humidification as thermal source with the sea seawater again, just can obtain than above-mentioned routine 2 more fresh water.
Example 4: route A → B4 → B3 → B2 → B1.More than three kinds of routes, be the situation of external heat source not, supposition now has thermal source in addition; For example the weary steam in power station, sun power or other thermals source improve AT, at this moment simultaneously; Suppose that again AT arrives 35 ℃, promptly reaches the B4 point (absolute humidity 36 gram/KG dry air) in the table 1.If at this moment cool off, suppose to be cooled to 30 ℃ that the B3 point obtains fresh water 36-27=9 gram with 30 ℃ of seawater., if be with the depths seawater with it cooling, cross B3 point, B2 point to the B1 point, will produce fresh water 36-10.5=25.2 gram, be 2.8 times of 9 grams.
In sum, the device of sea water desaltination of the present invention can effectively utilize the waste heat of thermal power plant to make fresh water, and Cost of seawater desalination is reduced significantly.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a sea water distiling plant comprises air humidification tower and air dehumidification tower, it is characterized in that, the top of said air humidification tower and air dehumidification tower is interconnected; Said air humidification tower comprises the heating tubulation, air-blast device, water-in, the water distributor that is communicated with said water-in of air is provided and supplies the seawater relief outlet of the seawater discharge in the said air humidification tower, the thermal source outlet that the two ends of said heating tubulation are respectively equipped with the thermal source inlet of the weary steam of input thermal power plant and export said weary steam to the air humidification tower; Be provided with cooling tubulation and fresh water relief outlet in the said air dehumidification tower, the two ends of said cooling tubulation are respectively equipped with water inlet and water outlet.
2. sea water distiling plant as claimed in claim 1 is characterized in that, water-in in the said air humidification tower and seawater relief outlet lay respectively at the position, top and the lower portion of said air humidification tower.
3. sea water distiling plant as claimed in claim 1 is characterized in that, said air humidification tower also comprises the shower nozzle that is installed on the said water distributor, and said water distributor is positioned at the inner position, top of said air humidification tower.
4. sea water distiling plant as claimed in claim 1 is characterized in that, the heating tubulation of said air humidification tower comprises conduit and is installed in said supravasal heating fin.
5. sea water distiling plant as claimed in claim 1 is characterized in that, said thermal source inlet and thermal source outlet lay respectively at the position, top and the lower portion of said air dehumidification tower; The weary steam of said thermal source inlet input thermal power plant; Said thermal source outlet is connected with a water separator, and said water separator is connected with the condensing surface in power station.
6. sea water distiling plant as claimed in claim 1 is characterized in that, the cooling tubulation of said air dehumidification tower comprises conduit and is installed in said supravasal radiating fin.
7. sea water distiling plant as claimed in claim 1 is characterized in that, said water inlet and water outlet lay respectively at the lower portion and the position, top of said air dehumidification tower; Said water inlet input depths seawater, said water outlet can be connected with the water-in on the air humidification tower, perhaps discharging.
8. sea water distiling plant as claimed in claim 1 is characterized in that, said fresh water relief outlet is positioned at the lower portion or the bottom of said air dehumidification tower.
9. sea water distiling plant as claimed in claim 1 is characterized in that, said air humidification tower surface and air dehumidification tower surface are equipped with thermal insulation layer.
10. sea water distiling plant as claimed in claim 1 is characterized in that, the lower portion of said air dehumidification tower also is provided with venting hole; Venting hole on the said air dehumidification tower is connected with the inlet mouth of said air-blast device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289714.XA CN102815757B (en) | 2012-08-08 | 2012-08-08 | Seawater desalination apparatus |
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| CN201210289714.XA CN102815757B (en) | 2012-08-08 | 2012-08-08 | Seawater desalination apparatus |
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| CN102815757A true CN102815757A (en) | 2012-12-12 |
| CN102815757B CN102815757B (en) | 2014-10-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973598A (en) * | 2010-10-15 | 2011-02-16 | 上海交通大学 | Spray evaporating air-moistening de-humidity type solar sea water desalinating device |
| CN101985368A (en) * | 2010-11-02 | 2011-03-16 | 大连海水淡化工程研究中心有限公司 | Condenser type seawater desalting device with steam turbine generator unit |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973598A (en) * | 2010-10-15 | 2011-02-16 | 上海交通大学 | Spray evaporating air-moistening de-humidity type solar sea water desalinating device |
| CN101985368A (en) * | 2010-11-02 | 2011-03-16 | 大连海水淡化工程研究中心有限公司 | Condenser type seawater desalting device with steam turbine generator unit |
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Denomination of invention: Solar energy heat energy lithium bromide absorption type central air conditioner with seawater desalination device Effective date of registration: 20170728 Granted publication date: 20141022 Pledgee: Bank of Beijing Limited by Share Ltd Shenzhen branch Pledgor: ShenZhen JeCh Technology Co., Ltd. Registration number: 2017990000696 |
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Date of cancellation: 20220614 Granted publication date: 20141022 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: SHENZHEN JECH TECHNOLOGY Co.,Ltd. Registration number: 2017990000696 |
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