CN103288157B - Seawater desalination device - Google Patents

Seawater desalination device Download PDF

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Publication number
CN103288157B
CN103288157B CN201210044737.4A CN201210044737A CN103288157B CN 103288157 B CN103288157 B CN 103288157B CN 201210044737 A CN201210044737 A CN 201210044737A CN 103288157 B CN103288157 B CN 103288157B
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China
Prior art keywords
water
condenser
pipe
seawater
self
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CN103288157A (en
Inventor
黄辉
王彤
赵亮
周炜
吕剑明
侯雪丹
潘南南
贾铌
李喜玉
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/138Water desalination using renewable energy
    • Y02A20/142Solar thermal; Photovoltaics
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation

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  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The invention relates to a seawater desalination device, in particular to a device for horizontal-pipe falling-film evaporation by utilizing solar energy, which comprises a seawater pretreatment system, an evaporator, a self-excitation spraying horizontal-pipe falling-film evaporation-condenser, a groove type solar device and the like. The heat collected by the groove type solar device is transferred to the evaporator through heat exchange, so that a power source is provided for the whole device. The invention is provided with the pressure regulating device, solves the control problem of pressure difference in the evaporator and the self-excited horizontal-tube falling-film evaporation-condenser, further filters the pretreated seawater to avoid the problem that the seawater after falling film blocks the pipeline, provides the fresh water collecting tank which is simple in structure and convenient to use, and avoids the problem of low water yield caused by the condensation of steam on the inner wall surface of the chamber. Compared with the prior art, the waste effect of reducing the condensation of the steam on the wall surface can be achieved, and therefore the water yield is improved.

Description

Sea water desalinating plant
Technical field
The invention belongs to seawater treatment apparatus technical field, relate in particular to a kind of sea water desalinating plant.
Background technology
Sea water desaltination utilizes sea water desalinization to produce fresh water.Be the increment technique of increasing income that realizes water resources utilization, can increase fresh water total amount, and be not subject to space-time and weather effect, water quality is good, price is gradually reasonable, can ensure the stable water supplies such as coastal Drinking Water for Residents and Industrial Boiler moisturizing.From seawater, obtain the process meaning sea water desaltination of fresh water.
At present, Global Seawater desalination day output approximately 3500 ten thousand stere left and right, wherein 80% for tap water, has solved people's water supply problem more than 100,000,000, and 1/50 population supplies drinking water by sea water desaltination in the world.There is more than 1.3 ten thousand of desalimtor in the whole world, and sea water desaltination substitutes and increment technique as Freshwater resources, is more and more subject to many maritime nations' attention in the world; The whole world directly utilizes seawater as the annual approximately 6000 billion cubic meter left and right of industrial colling total amount, to substitute the Freshwater resources of a large amount of preciousnesses; The whole world is carried 5,000 ten thousand tons of salt, magnesium and more than 260 ten thousand tons, magnesium oxide, 200,000 tons of bromines etc. every year from ocean.
Distillation method is the direct and the most common method of sea water desaltination, in prior art, adopts large-scale horizontal tube falling film equipment as heat-exchange equipment, equipment large scale structure more complicated.Meanwhile, in carrying out sea water desaltination treating processes, also have the problem of the seawater blocking pipe after falling liquid film, and steam causes in indoor wall condensation the problem that water production rate is low.
Summary of the invention
The object of the present invention is to provide a kind of sea water desalinating plant, avoided the problem of the seawater blocking pipe after falling liquid film, producing water ratio is high.
The present invention is achieved through the following technical solutions:
Sea water desalinating plant, includes: horizontal tube falling film evaporation-condenser and condenser are drenched in hot-water cure device, vaporizer, self-excitation; Wherein, described vaporizer adopts a kind of falling liquid film device, includes liquid distributor and the film supplying tube that is positioned at liquid distributor below; Hot-water cure device is connected with film supplying tube by connecting water pipe, and film supplying tube, connecting water pipe and hot-water cure device form the hot water circulation passage of sealing; Described vaporizer drenches horizontal tube falling film evaporation-condenser with self-excitation and is connected respectively with seawater connecting water pipe by steam-pipe, in described steam-pipe, is provided with pressure regulating device; Described self-excitation is drenched horizontal tube falling film evaporation-condenser and is connected by fresh water pipeline with condenser.
Described film supplying tube adopts snake pipe structure.
Described hot-water cure device is a kind of groove type solar device, and described groove type solar device is connected with seawater water inlet pipe; In described seawater water inlet pipe, be provided with the first strainer.
The liquid distributor of described vaporizer, is connected with seawater water inlet pipe to be diluted, along the flow direction of seawater to be diluted, in described seawater water inlet pipe to be diluted, is disposed with sea water preprocessing system and the second strainer.
Described pressure regulating device includes vacuum pump, the first valve and the second valve; Connecting described vaporizer includes with the steam-pipe of self-excitation pouring horizontal tube falling film evaporation-condenser: be connected the first vapour pipe of vaporizer and vacuum pump, the 3rd vapour pipe that is connected the second vapour pipe of self-excitation pouring horizontal tube falling film evaporation-condenser and vacuum pump and is connected equally self-excitation pouring horizontal tube falling film evaporation-condenser and vacuum pump; The first valve is arranged in the first vapour pipe, and the second valve is arranged in the second vapour pipe, and the 3rd vapour pipe is a continuous conduit.
Described condenser comprises condensing chamber and refrigerating unit, and described condensing chamber is connected by water-cooled tube with refrigerating unit, is provided with heat exchange tube device in condensing chamber; The fresh water pipeline that horizontal tube falling film evaporation-condenser is drenched in described connection self-excitation is connected with the heat exchange tube device arranging in condensing chamber; The outlet of described heat exchange tube device is water outlet.
The inner-wall surface of described vaporizer is provided with the first fresh water collecting groove.
The inner-wall surface that horizontal tube falling film evaporation-condenser is drenched in described self-excitation is provided with the second fresh water collecting groove.
Beneficial effect of the present invention is as follows:
Sea water desalinating plant of the present invention is a kind of equipment with small-sized falling-film evaporator, specifically utilize sun power to carry out a device for horizontal tube falling film evaporation, comprise sea water preprocessing system, vaporizer, self-excitation pouring horizontal tube falling film evaporation-condenser, condenser, groove type solar device etc.The heat that groove type solar device is collected is passed in described vaporizer, for whole device provides propulsion source through heat exchange.The present invention is provided with pressure regulating device, solved the control problem that pressure difference in horizontal tube falling film evaporation-condenser is drenched in vaporizer and self-excitation, pretreated seawater has been avoided the problem of the seawater blocking pipe after falling liquid film through further filtration, propose a kind of fresh water collecting groove simple in structure, easy to use, avoided steam to cause in indoor wall condensation the problem that water production rate is low.Can reach compared to existing technology and reduce steam in the waste effect of wall condensation, thereby improve water production rate.
Further be interpreted as:
Sea water desalinating plant of the present invention, goes to improve device operation efficiency and water production rate from three aspects.The one, pretreated seawater has been avoided the seawater blocking pipe after falling liquid film by further filtration; The 2nd, by vacuum pump equipressure setting device, from vaporizer and self-excitation, drench after extracting steam horizontal tube falling film evaporation-condenser device and return to steam to the latter, regulate so easily both pressure reduction; The 3rd, because steam in vaporizer and self-excitation pouring horizontal tube falling film evaporation-condenser causes fresh water waste in wall condensation, be provided with fresh water collecting groove and collect this part fresh water, greatly improved the output of fresh water.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of sea water desalinating plant of the present invention.
Description of reference numerals:
1, vaporizer, 2, self-excitation drenches horizontal tube falling film evaporation-condenser, 3, condenser, 4, the first strainer, 5, groove type solar device, the 6, first fresh water collecting groove, 7, sea water preprocessing system, 8, the second strainer, the 9, first valve, 10, vacuum pump, 11, the second valve, 12, refrigerating unit, 13, condensing chamber, the 14, second fresh water collecting groove.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in more detail:
Ask for an interview Fig. 1, the invention discloses a kind of sea water desalinating plant, include: horizontal tube falling film evaporation-condenser 2 and condenser 3 are drenched in hot-water cure device, vaporizer 1, self-excitation; Wherein, described vaporizer 1 adopts a kind of falling liquid film device, includes liquid distributor and the film supplying tube that is positioned at liquid distributor below; Hot-water cure device is connected with film supplying tube by connecting water pipe, and film supplying tube, connecting water pipe and hot-water cure device form the hot water circulation passage of sealing; Described vaporizer 1 drenches horizontal tube falling film evaporation-condenser 2 with self-excitation and is connected respectively with seawater connecting water pipe by steam-pipe, in described steam-pipe, is provided with pressure regulating device; Described self-excitation is drenched horizontal tube falling film evaporation-condenser 2 and is connected by fresh water pipeline with condenser 3.
Described film supplying tube adopts snake pipe structure.
Described film supplying tube is a kind of copper pipe.
Described hot-water cure device is a kind of groove type solar device 5, and described groove type solar device is connected with seawater water inlet pipe; In described seawater water inlet pipe, be provided with the first strainer 4.
The liquid distributor of described vaporizer 1, is connected with seawater water inlet pipe to be diluted, along the flow direction of seawater to be diluted, is disposed with sea water preprocessing system 7 and the second strainer 8 in described seawater water inlet pipe to be diluted.
Described pressure regulating device includes vacuum pump 10, the first valve 9 and the second valve 11; Connecting described vaporizer 1 includes with the steam-pipe of self-excitation pouring horizontal tube falling film evaporation-condenser 2: be connected the first vapour pipe of vaporizer 1 and vacuum pump 10, the 3rd vapour pipe that is connected the second vapour pipe of self-excitation pouring horizontal tube falling film evaporation-condenser 2 and vacuum pump 10 and is connected equally self-excitation pouring horizontal tube falling film evaporation-condenser 2 and vacuum pump 10; The first valve 9 is arranged in the first vapour pipe, and the second valve 11 is arranged in the second vapour pipe, and the 3rd vapour pipe is a continuous conduit.
Described condenser comprises condensing chamber 13 and refrigerating unit 12, and described condensing chamber 13 is connected by water-cooled tube with refrigerating unit 12, in condensing chamber 13, is provided with heat exchange tube device; Described connection self-excitation is drenched the fresh water pipeline of horizontal tube falling film evaporation-condenser 2 and is connected with the heat exchange tube device arranging in condensing chamber 13; The outlet of described heat exchange tube device is water outlet.
The inner-wall surface of described vaporizer 1 is provided with the first fresh water collecting groove 6.
The inner-wall surface that horizontal tube falling film evaporation-condenser 2 is drenched in described self-excitation is provided with the second fresh water collecting groove 14.
Sea water desalinating plant of the present invention, its principle of work is: the source of system medium power is to utilize groove type solar device heating seawater, and the seawater of heating flows in the copper pipe in vaporizer, hot water flow to groove type solar device through copper pipe and continues heating cycle utilization.Through the seawater filtering, by the copper pipe in wetting vaporizer after liquid distributor cloth liquid, carry out heat exchange with hot water mobile in copper pipe, control the pressure in vaporizer, seawater after filtration carries out falling film evaporation in vaporizer, the process that seawater after falling liquid film drenches repeated evaporation device in horizontal tube falling film evaporation-condenser in self-excitation, and steam enters self-excitation and drenches horizontal tube falling film evaporation-condenser and carry out condensation, partial condensation water and part steam drench horizontal tube falling film evaporation-condenser from self-excitation and enter into condenser and carry out condensation.
Certain appropriate seawater is after pre-treatment, the groove type solar device thermal-arrest of flowing through adds warm water, this hot water flows in vaporizer and is circulated back in groove type solar collecting system with the seawater to make heat exchange of falling liquid film in snake pipe, and this hot water circulation provides energy derive for whole device.The former seawater of the seawater water-in of device through pre-treatment again after the second strainer filters, the second strainer further filters large particulate in water, avoided like this seawater blocking pipe after falling liquid film, improved the efficiency of water cycle in sea water desalinating plant, former seawater is after falling film evaporation in 1st effective evaporator, the steam producing enters in the transverse tube of self-excitation pouring horizontal tube falling film evaporation-condenser, after falling liquid film, certain density seawater takes into account through two effect falling film evaporations the steam that a cooling effect enters transverse tube, take full advantage of the waste heat of seawater after falling liquid film, drench the laggard step evaporation of steam heat-exchanging in the transverse tube of horizontal tube falling film evaporation-condenser with self-excitation, steam enters condensing chamber and water coolant heat exchange condensation, in self-excitation pouring horizontal tube falling film evaporation-condenser transverse tube, uncooled gas is further cooling through condensing chamber.Rationally regulate vaporizer, self-excitation to drench the pressure of horizontal tube falling film evaporation-condenser, condenser, water vapour after falling film evaporation, by vacuum pump, extract vaporizer and self-excitation pouring horizontal tube falling film evaporation-condenser simultaneously, after turn back to self-excitation and drench horizontal tube falling film evaporation-condenser, in the process extracting at vacuum pump, take two valves to remove to regulate the pressure between two Room, having solved like this steam in vaporizer does not have the effect of pressure difference to be difficult to the problem in self-excitation pouring horizontal tube falling film evaporation-condenser; In the physical process of evaporation and condensation, part steam is condensed into water at wall, with seawater after falling liquid film mix into together with, cause waste, the inner-wall surface that therefore drenches horizontal tube falling film evaporation-condenser in vaporizer and self-excitation arranges fresh water collecting groove and collects the fresh water that this part is condensed.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and the various modifications and variations of carrying out, all belong to protection scope of the present invention.

Claims (8)

1. sea water desalinating plant, includes: horizontal tube falling film evaporation-condenser (2) and condenser (3) are drenched in hot-water cure device, vaporizer (1), self-excitation; It is characterized in that: described vaporizer (1) adopts a kind of falling liquid film device, include liquid distributor and the film supplying tube that is positioned at liquid distributor below; Hot-water cure device is connected with film supplying tube by connecting water pipe, and film supplying tube, connecting water pipe and hot-water cure device form the hot water circulation passage of sealing; Described vaporizer (1) drenches horizontal tube falling film evaporation-condenser (2) with self-excitation and is connected respectively with seawater connecting water pipe by steam-pipe, in described steam-pipe, is provided with pressure regulating device; Described self-excitation is drenched horizontal tube falling film evaporation-condenser (2) and is connected by fresh water pipeline with condenser (3); Described pressure regulating device includes vacuum pump (10), the first valve (9) and the second valve (11); Connecting described vaporizer (1) includes with the steam-pipe of self-excitation pouring horizontal tube falling film evaporation-condenser (2): be connected the first vapour pipe of vaporizer (1) and vacuum pump (10), the 3rd vapour pipe that is connected the second vapour pipe of self-excitation pouring horizontal tube falling film evaporation-condenser (2) and vacuum pump (10) and is connected self-excitation pouring horizontal tube falling film evaporation-condenser (2) and vacuum pump (10); The first valve (9) is arranged in the first vapour pipe, and the second valve (11) is arranged in the second vapour pipe, and the 3rd vapour pipe is a continuous conduit.
2. sea water desalinating plant as claimed in claim 1, is characterized in that: described hot-water cure device is a kind of groove type solar device (5), and described groove type solar device is connected with seawater water inlet pipe; In described seawater water inlet pipe, be provided with the first strainer (4).
3. sea water desalinating plant as claimed in claim 2, it is characterized in that: the liquid distributor of described vaporizer (1), be connected with seawater water inlet pipe to be diluted, along the flow direction of seawater to be diluted, in described seawater water inlet pipe to be diluted, be disposed with sea water preprocessing system (7) and the second strainer (8).
4. sea water desalinating plant as claimed in claim 3, it is characterized in that: described condenser comprises condensing chamber (13) and refrigerating unit (12), described condensing chamber (13) is connected by water-cooled tube with refrigerating unit (12), and condensing chamber is provided with heat exchange tube device in (13); The fresh water pipeline that horizontal tube falling film evaporation-condenser (2) is drenched in described connection self-excitation is connected with the heat exchange tube device arranging in condensing chamber (13); The outlet of described heat exchange tube device is water outlet.
5. as the sea water desalinating plant as described in any one in claim 1 to 4, it is characterized in that: the inner-wall surface of described vaporizer (1) is provided with the first fresh water collecting groove (6).
6. as the sea water desalinating plant as described in any one in claim 1 to 4, it is characterized in that: the inner-wall surface that horizontal tube falling film evaporation-condenser (2) is drenched in described self-excitation is provided with the second fresh water collecting groove (14).
7. as the sea water desalinating plant as described in any one in claim 1 to 4, it is characterized in that: described film supplying tube adopts snake pipe structure.
8. as the sea water desalinating plant as described in any one in claim 1 to 4, it is characterized in that: described film supplying tube is a kind of copper pipe.
CN201210044737.4A 2012-02-24 2012-02-24 Seawater desalination device Active CN103288157B (en)

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CN104150548B (en) * 2013-12-24 2016-06-22 北京大学包头创新研究院 A kind of seawater desalination system
CN106115830A (en) * 2016-08-05 2016-11-16 重庆市三耕储节能环保科技有限公司 A kind of renewable sources of energy sea water automatic processing device
CN106496890A (en) * 2016-11-08 2017-03-15 江苏润海能源科技有限公司 A kind of sea water desalinating unit cooling water pipe
CN106745425A (en) * 2017-01-17 2017-05-31 北京今大禹环境技术股份有限公司 A kind of efficient tube type falling liquid film steam raising plant for desalinization

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