CN102765769A - Low-temperature multiple-effect heat pipe type evaporator - Google Patents
Low-temperature multiple-effect heat pipe type evaporator Download PDFInfo
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- CN102765769A CN102765769A CN2012102891035A CN201210289103A CN102765769A CN 102765769 A CN102765769 A CN 102765769A CN 2012102891035 A CN2012102891035 A CN 2012102891035A CN 201210289103 A CN201210289103 A CN 201210289103A CN 102765769 A CN102765769 A CN 102765769A
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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 invention discloses a low-temperature multiple-effect heat pipe type evaporator which comprises a casing. A plurality of heat pipes which are arranged at intervals are arranged in the casing, a spray system is arranged above the heat pipes which are arranged at intervals, the spray system is connected with a seawater inlet, and at least one steam inlet, at least one strong water port, at least one vacuumizing port and at least one steam outlet are arranged on the casing. By means of use of the low-temperature multiple-effect heat pipe type evaporator and a sea water desalinization system of the low-temperature multiple-effect heat pipe type evaporator, characters of the heat pipes can be effectively used, heat transfer efficiency is improved, and energy utilization rate of the sea water desalinization system is improved accordingly.
Description
Technical field
The present invention relates to field of sea water desalting technology, be specifically related to a kind of low-temperature multi-effect heat pipe evaporator.
Background technology
Low temperature multiple-effect distillation is meant that thermal source is the steam below 70 ℃; Before and after 1981, begin to be applied to payable seawater desalination system; It is characterized in that a series of level pipe sprinkling falling-film evaporators are together in series; Pass through repeatedly evaporation and condensation with a certain amount of steam input, the vaporization temperature that imitate back one is lower than front one effect, thereby obtains being multiple times than the zero(ppm) water of quantity of steam.The main method of using is following:
(1) MSF (MSF) distillation method
MSF is the most frequently used a kind of method of distillation sea water desalting, before the eighties in 20th century, and the most MSF technology that adopt of more large-scale sea water distiling plant.The Dagang Power Plant the second stage of the project has been introduced MSF (MSF) sea water distiling plant of the U.S., is the large-scale sea water distiling plant of China's first cover.The advantage of MSF device is that the equipment single-machine capacity is big, long service life, water outlet quality better, thermo-efficiency are high.But, must adopt expensive cupronickel, special stainless steel and titanium material, so equipment manufacturing cost is high because the maximum operating temperature of device concentrated seawater is bigger to the corrodibility of heat-transfer pipe and apparatus body about 110 ℃.In addition, in order to alleviate fouling and corrosion, the seawater of access to plant is added acid (remove CO with outgasing
2And O
2), thereby also increased and make the water cost.
(2) low-temperature multi-effect (MED) distillation method
The low-temperature multiple-effect seawater desalination technology is meant that the salt solution top temperature is lower than 70 ℃, adopts the desalination techniques of low temperature transverse tube spraying technique.The low-temperature multi-effect vaporizer is with a series of level pipe sprinkling falling-film evaporator arranged in series; In the pipe heating steam; Injector evenly sprays seawater above the tube bank of transverse tube heat exchanger; Form under the Film Flow on the transverse tube surface, seawater obtains degasification and part evaporation in this process, and heat exchanger effectiveness is high.Heating steam is introduced into first and imitates; Its heat of condensation makes the almost evaporation of seawater of equivalent, and through repeatedly evaporation and condensation, the vaporization temperature of back all is lower than front one effect; Thereby obtain being multiple times than the zero(ppm) water of quantity of steam, the condensation in sea water condenser of the steam of last effect.First imitates phlegma returns boiler, and the phlegma of other effects and sea water condenser is collected the back as product water.The operating temperature of low-temperature multi-effect seawater desalination device is less than 70 ℃, well below 110 ℃ of MSF device, so its energy consumption and wall erosion and scaling rate are all lower.Compare with MSF, the material of its apparatus body and heat-transfer pipe requires also lower.
(3) press steam distillation
Press the same low-temperature multi-effect of steam distilled desalinating process (MED) distillation method, different is to press steam distillation to use the low-down heat pump of hear rate, with the heating steam of compressed vapour as vaporizer heat pipe bundle, is a kind of desalination process of distilling efficiently.Compression can be adopted steam injector, is called thermo compression (TVC); Or adopt the mechanical vapour compressor, and promptly mechanically compress (MVC) is the desalination techniques that only relies on electric energy, as long as electricity is arranged, just can produce fresh water, because the restriction of machine by compression, the capacity of its unitary device is little than other water distilling apparatus.In low-temperature multi-effect (LT-MED) sea water distiling plant system; As the heating steam pressure that provides is higher; For carrying the high yield water ratio, general normal employing LT-MED and thermo compression (TVC) bonded desalting equipment, promptly low-temperature multi-effect adds the desalting equipment (MED+EC) of steam injector.
The low-temperature multi-effect vaporizer is visual plant in the seawater desalination system at present.But traditional relative terminal temperature difference of low-temperature multi-effect vaporizer is bigger, and heat transfer coefficient is lower, and single low-temperature multi-effect evaporator effectiveness is not high.
Summary of the invention
The present invention has overcome the deficiency of prior art, and a kind of low-temperature multi-effect heat pipe evaporator that can effectively improve sea water desaltination efficient is provided.
Consider the problems referred to above of prior art, according to an aspect of the present invention, for solving above-mentioned technical problem, the present invention adopts following technical scheme:
A kind of low-temperature multi-effect heat pipe evaporator; Comprise housing; Be provided with many spaced heat pipes in the said housing; Said many spaced heat pipe tops are provided with sprinkling system, and said sprinkling system is connected with sea intake, and said housing is provided with at least one steam inlet, at least one concentrated water spout, at least one vacuum orifice and at least one vapour outlet.
In order to realize the present invention better, further technical scheme is:
As preferably, the caliber of said every heat pipe is 20～50mm, and length is 1000～8000mm, and the adjacent holes back gauge is 200～500mm.
As preferably, said sprinkling system comprises 5～20 groups of Scrawl nozzles, and the spray angle of Scrawl nozzle is 60 °～120 °, and single flow is 350～20000L/min.
As preferably, be provided with vapour distributor in the housing at a said steam inlet place, said vapour distributor is horn-like.
As preferably, a said steam outlet is provided with steam separator, and said steam separator is that waveform is board-like.
As preferably, be provided with the dividing plate of horizontal direction in the said housing.
Compared with prior art, one of beneficial effect of the present invention is:
Low-temperature multi-effect heat pipe evaporator through to invention uses, and can effectively utilize the characteristic of heat pipe, improves heat transfer efficiency, thereby improves the energy utilization rate of seawater desalination system.Specifically can be:
(1) efficient is high: under the efficient effect through heat pipe, improve system efficiency;
(2) can realize sea water desaltination under the low temperature, because the decision of the characteristic of heat pipe, avoid simultaneously or slowed down corrosion on Equipment and fouling;
(3) energy utilization rate is high: because make full use of inferior turbine low pressure cylinder steam discharge;
(4) turndown ratio is big, and load can from 40% to 110% changes, and water generation ratio can not descend;
(5) product water water quality is better, can be used for boiler of power plant supplementary feed or extensive municipal water use;
(6) system operation is safe and reliable, leaks even if heat-transfer pipe takes place, and can not influence water quality.
Description of drawings
For clearer explanation present specification embodiment or technical scheme of the prior art; To do simple the introduction to the accompanying drawing of required use in the description of embodiment or prior art below; Obviously, the accompanying drawing in describing below only is the reference to some embodiment in the present specification, to those skilled in the art; Under the situation of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 shows the structural representation of low-temperature multi-effect heat pipe evaporator according to an embodiment of the invention.
Embodiment
Below in conjunction with embodiment the present invention is done to specify further, but embodiment of the present invention is not limited thereto.
Fig. 1 shows the structural representation of low-temperature multi-effect heat pipe evaporator according to an embodiment of the invention.An embodiment with reference to a kind of low-temperature multi-effect heat pipe evaporator shown in Figure 1; Comprise housing (106); Be provided with many spaced heat pipes (101) in the said housing (106); Utilize the heat transfer property of heat pipe (101), safe operation under the low temperature that can guarantee is to raise the efficiency and Energy efficiency; Said many spaced heat pipes (101) top is provided with sprinkling system (105); Said sprinkling system (105) is connected with sea intake (107), and said housing (106) is provided with a steam inlet (108), a concentrated water spout (109), a vacuum orifice (110) and two vapour outlets (111).
Wherein the quantity of steam inlet (108), concentrated water spout (109), vacuum orifice (110) and vapour outlet (111) is not limit, can be for a plurality of.Can also be that housing (106) is provided with two and cleans import (112) and a washing outlet.
The caliber of said every heat pipe (101) is 20～50mm, and length is 1000～8000mm, and the adjacent holes back gauge is 200～500mm.Another embodiment can be, the caliber of heat pipe (101) is 30mm, and length is 9000mm, and the adjacent holes back gauge is 300mm.
Said sprinkling system (105) comprises 5～20 groups of Scrawl nozzles, and the spray angle of Scrawl nozzle is 60 °～120 °, and single flow is 350～20000L/min.An embodiment can be, comprises 10 groups of Scrawl nozzles, and its spray angle is 100 °, and single flow is 10000L/min.
Be provided with vapour distributor (103) in the housing (106) that steam inlet as shown in Figure 1 (108) is located, said vapour distributor (103) is horn-like; Vapour outlet (111) locates to be provided with steam separator (104), and said steam separator (104) is that waveform is board-like, can be hung on a vapour outlet (111) and locate.
Be provided with the dividing plate (102) of horizontal direction in the said housing (106).
As shown in Figure 1; Steam is got into by left side steam inlet (108); Steam after the entering begins to wash away heat pipe (101), and heat pipe (101) is activated and just automatically heat is conducted to top, heat pipe (101) heating zone heat absorption at this moment; Steam temperature behind heat pipe (101) descends and to begin to condense, and heat is absorbed by heat pipe (101) and conducts to condensation segment; When heat pipe (101) when heating zone is heated, the rapid carburation by evaporation of the liquid in the kapillary, steam flows to condensation segment under small pressure reduction; Under the cooling of seawater; Discharge heat, regelation becomes liquid, and liquid leans on the effect of capillary force to flow back to heating zone along porous material again; So circulation is more than, and heat reaches an other end by heat pipe (101) one ends.This circulation is carried out fast, and heat can be come by conduction continuously.Heat pipe (101) is in the process that realizes this transfer of heat, thus seawater heat absorption evaporation.
The seawater of the heating back degassing under the effect of nozzle, sprays on the heat pipe (101) uniformly; At this moment heat pipe condenser section with the seawater of heat transferred atomizing, makes its heating vaporization through heat release; During through steam separator (104), because vapour, current direction are orthogonal, the cf-when steam flow is turned is separated water droplet; Stick to steam separator (104) and go up the very thin moisture film of formation, lean on gravity slowly to flow downward, form bigger water droplet in the lower end of steam separator (104) and fall; Thereby carry out carbonated drink separation, steam flows out from the right side and gets into next effect steam side.The seawater of vaporization is not discharged from concentrated water spout (109).
" embodiment " who is spoken of in this manual, " another embodiment ", " embodiment ", etc., refer to the concrete characteristic, structure or the characteristics that combine this embodiment to describe and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in specification sheets.Further, when describing a concrete characteristic, structure or characteristics in conjunction with arbitrary embodiment, what institute will advocate is that other embodiment of combination realize that this characteristic, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here; But; Should be appreciated that those skilled in the art can design a lot of other modification and embodiments, these are revised and embodiment will drop within disclosed principle scope of the application and the spirit.More particularly, in the scope of, accompanying drawing open and claim, can carry out multiple modification and improvement to the building block and/or the layout of subject combination layout in the application.Except modification that building block and/or layout are carried out with improve, to those skilled in the art, other purposes also will be tangible.
Claims (6)
1. low-temperature multi-effect heat pipe evaporator; It is characterized in that; Comprise housing, be provided with many spaced heat pipes in the said housing, said many spaced heat pipe tops are provided with sprinkling system; Said sprinkling system is connected with sea intake, and said housing is provided with at least one steam inlet, at least one concentrated water spout, at least one vacuum orifice and at least one vapour outlet.
2. low-temperature multi-effect heat pipe evaporator according to claim 1 is characterized in that, the caliber of said every heat pipe is 20～50mm, and length is 1000～8000mm, and the adjacent holes back gauge is 200～500mm.
3. low-temperature multi-effect heat pipe evaporator according to claim 1 is characterized in that, said sprinkling system comprises 5～20 groups of Scrawl nozzles, and the spray angle of Scrawl nozzle is 60 °～120 °, and single flow is 350～20000L/min.
4. low-temperature multi-effect heat pipe evaporator according to claim 1 is characterized in that, is provided with vapour distributor in the housing at a said steam inlet place, and said vapour distributor is horn-like.
5. low-temperature multi-effect heat pipe evaporator according to claim 1 is characterized in that, a said steam outlet is provided with steam separator, and said steam separator is that waveform is board-like.
6. low-temperature multi-effect heat pipe evaporator according to claim 1 is characterized in that, is provided with the dividing plate of horizontal direction in the said housing.
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| CN2012102891035A CN102765769A (en) | 2012-08-15 | 2012-08-15 | Low-temperature multiple-effect heat pipe type evaporator |
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| CN2012102891035A CN102765769A (en) | 2012-08-15 | 2012-08-15 | Low-temperature multiple-effect heat pipe type evaporator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496751A (en) * | 2013-10-23 | 2014-01-08 | 武汉大学 | Low-temperature energy-saving marine seawater desalination system |
| CN103570089A (en) * | 2013-09-26 | 2014-02-12 | 众和海水淡化工程有限公司 | Sea water spraying system of sea water desalting device |
| CN103940246A (en) * | 2013-01-17 | 2014-07-23 | 北京朗新明环保科技有限公司 | Low-temperature flue gas waste heat recovery device |
| CN103964539A (en) * | 2013-01-30 | 2014-08-06 | 北京朗新明环保科技有限公司 | Microwave desalination device for strong brine |
| CN106090849A (en) * | 2016-06-15 | 2016-11-09 | 镇江市中能机械设备有限公司 | A kind of boats and ships steam boiler |
| CN107884168A (en) * | 2017-11-06 | 2018-04-06 | 哈尔滨工程大学 | A kind of experimental system visualizing for being used to study Shutter separator internal mechanism and type selecting |
| CN109231323A (en) * | 2018-11-09 | 2019-01-18 | 浙江海盐力源环保科技股份有限公司 | A kind of seawater desalination system of cyclone type spray |
| CN109578962A (en) * | 2018-11-21 | 2019-04-05 | 中国航发西安动力控制科技有限公司 | A kind of evaporator |
| CN110563234A (en) * | 2019-09-02 | 2019-12-13 | 龚建国 | low-energy-consumption seawater desalination system and method |
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| JP2008188514A (en) * | 2007-02-02 | 2008-08-21 | Sasakura Engineering Co Ltd | Compressor for steam in reduced pressure type evaporator |
| CN101503224A (en) * | 2008-12-25 | 2009-08-12 | 滨海环保装备（天津）有限公司 | Low temperature multiple-effect seawater desalination evaporator and working method thereof |
| CN102336447A (en) * | 2011-06-27 | 2012-02-01 | 哈尔滨汽轮机厂辅机工程有限公司 | Seawater desalination primary evaporator using ferritic stainless steel tubes |
| CN102557168A (en) * | 2011-12-05 | 2012-07-11 | 北京朗新明环保科技有限公司 | Heat-pipe low-temperature multi-effect sea water desalinating system and process flow |
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Patent Citations (4)
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| JP2008188514A (en) * | 2007-02-02 | 2008-08-21 | Sasakura Engineering Co Ltd | Compressor for steam in reduced pressure type evaporator |
| CN101503224A (en) * | 2008-12-25 | 2009-08-12 | 滨海环保装备（天津）有限公司 | Low temperature multiple-effect seawater desalination evaporator and working method thereof |
| CN102336447A (en) * | 2011-06-27 | 2012-02-01 | 哈尔滨汽轮机厂辅机工程有限公司 | Seawater desalination primary evaporator using ferritic stainless steel tubes |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940246A (en) * | 2013-01-17 | 2014-07-23 | 北京朗新明环保科技有限公司 | Low-temperature flue gas waste heat recovery device |
| CN103964539A (en) * | 2013-01-30 | 2014-08-06 | 北京朗新明环保科技有限公司 | Microwave desalination device for strong brine |
| CN103964539B (en) * | 2013-01-30 | 2016-02-24 | 北京朗新明环保科技有限公司 | Strong brine microwave desalting equipment |
| CN103570089A (en) * | 2013-09-26 | 2014-02-12 | 众和海水淡化工程有限公司 | Sea water spraying system of sea water desalting device |
| CN103496751A (en) * | 2013-10-23 | 2014-01-08 | 武汉大学 | Low-temperature energy-saving marine seawater desalination system |
| CN106090849A (en) * | 2016-06-15 | 2016-11-09 | 镇江市中能机械设备有限公司 | A kind of boats and ships steam boiler |
| CN107884168A (en) * | 2017-11-06 | 2018-04-06 | 哈尔滨工程大学 | A kind of experimental system visualizing for being used to study Shutter separator internal mechanism and type selecting |
| CN107884168B (en) * | 2017-11-06 | 2019-12-10 | 哈尔滨工程大学 | Visual experiment system for researching internal mechanism and model selection of corrugated plate separator |
| CN109231323A (en) * | 2018-11-09 | 2019-01-18 | 浙江海盐力源环保科技股份有限公司 | A kind of seawater desalination system of cyclone type spray |
| CN109231323B (en) * | 2018-11-09 | 2021-07-09 | 浙江海盐力源环保科技股份有限公司 | Cyclone-type spraying seawater desalination system |
| CN109578962A (en) * | 2018-11-21 | 2019-04-05 | 中国航发西安动力控制科技有限公司 | A kind of evaporator |
| CN110563234A (en) * | 2019-09-02 | 2019-12-13 | 龚建国 | low-energy-consumption seawater desalination system and method |
| CN110563234B (en) * | 2019-09-02 | 2021-12-03 | 衡阳远通物流有限公司 | Low-energy-consumption seawater desalination system and method |
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Application publication date: 20121107 |