CN202625881U - Low-temperature multi-effect tube steam generator - Google Patents
Low-temperature multi-effect tube steam generator Download PDFInfo
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- CN202625881U CN202625881U CN2012203030927U CN201220303092U CN202625881U CN 202625881 U CN202625881 U CN 202625881U CN 2012203030927 U CN2012203030927 U CN 2012203030927U CN 201220303092 U CN201220303092 U CN 201220303092U CN 202625881 U CN202625881 U CN 202625881U
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- heat pipe
- temperature multi
- steam
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a low-temperature multi-effect tube steam generator, which includes a casing, wherein a plurality of heat tubes that are arranged at intervals are arranged in the casing; a spraying system is arranged above the heat tubes that are arranged at intervals and connected with a sea water inlet; and at least one steam inlet, at least one concentrated water opening, at least one vacuum orifice and at least one steam outlet are arranged on the casing. By the utilization of the low-temperature multi-effect tube steam generator and the sea water desalting system thereof, the characteristics of the heat tubes are effectively utilized, and the heat transfer efficiency is improved, so that the energy utilization rate of the sea water desalting system is improved.
Description
Technical field
The utility model relates to field of sea water desalting technology, is specifically related to a kind of low-temperature multi-effect heat pipe-type steamer.
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 spray falling liquid film steamers 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.
The utility model content
The utility model has overcome the deficiency of prior art, and a kind of low-temperature multi-effect heat pipe-type steamer 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 utility model, for solving above-mentioned technical problem, the utility model adopts following technical scheme:
A kind of low-temperature multi-effect heat pipe-type steamer; 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 utility model better, further technical scheme is:
As preferably, the caliber of said every heat pipe is 20～50 millimeters, and length is 1000～8000 millimeters, and the adjacent holes back gauge is 200～500 millimeters.
As preferably, said sprinkling system comprises 5～20 groups of Scrawl nozzles, and the spray angle of Scrawl nozzle is 60～120 degree, and single flow is 350～20000 liters/minute.
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 utility model is:
Low-temperature multi-effect heat pipe-type steamer through to utility model 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 according to the low-temperature multi-effect heat pipe-type steamer of an embodiment of the utility model.
Embodiment
Below in conjunction with embodiment the utility model is done to specify further, but the embodiment of the utility model is not limited thereto.
Fig. 1 shows the structural representation according to the low-temperature multi-effect heat pipe-type steamer of an embodiment of the utility model.An embodiment with reference to a kind of low-temperature multi-effect heat pipe-type steamer 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 pipe 101 tops are 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, concentrated water spout 109, 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 20～50 millimeters, and length is 1000～8000 millimeters, and the adjacent holes back gauge is 200～500 millimeters.Another embodiment can be, the caliber of heat pipe 101 is 30 millimeters, and length is 9000 millimeters, and the adjacent holes back gauge is 300 millimeters.
Said sprinkling system 105 comprises 5～20 groups of Scrawl nozzles, and the spray angle of Scrawl nozzle is 60～120 degree, and single flow is 350～20000 liters/minute.An embodiment can be, comprises 10 groups of Scrawl nozzles, and its spray angle is 100 degree, and single flow is 10000 liters/minute.
Be provided with vapour distributor 103 in the housing 106 at steam inlet 108 places as shown in Figure 1, said vapour distributor 103 is horn-like; Vapour outlet 111 places are provided with steam separator 104, and said steam separator 104 is that waveform is board-like, can be hung on vapour outlet 111 places.
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 zones heat absorption at this moment; Steam temperature behind heat pipe 101 descends and begins to condense, and heat is by heat pipe 101 absorptions and conduct to condensation segment; When heat pipe 101 heating zones are 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 1 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; Separated 104 o'clock through carbonated drink, because vapour, current direction are orthogonal, the cf-when steam flow is turned is separated water droplet; Stick to carbonated drink and separate the very thin moisture film of formation on 104, lean on gravity slowly to flow downward, form bigger water droplet in the lower end of carbonated drink separation 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 drop in the scope of the utility model.
Although a plurality of explanatory embodiment with reference to the utility model is described the utility model here; But; Should be appreciated that; Those skilled in the art can design a lot of other modification and embodiments, and 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-type steamer; 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-type steamer according to claim 1 is characterized in that the caliber of said every heat pipe is 20～50 millimeters, and length is 1000～8000 millimeters, and the adjacent holes back gauge is 200～500 millimeters.
3. low-temperature multi-effect heat pipe-type steamer 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 degree, and single flow is 350～20000 liters/minute.
4. low-temperature multi-effect heat pipe-type steamer 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-type steamer 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-type steamer according to claim 1 is characterized in that, is provided with the dividing plate of horizontal direction in the said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203030927U CN202625881U (en) | 2012-06-27 | 2012-06-27 | Low-temperature multi-effect tube steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203030927U CN202625881U (en) | 2012-06-27 | 2012-06-27 | Low-temperature multi-effect tube steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202625881U true CN202625881U (en) | 2012-12-26 |
Family
ID=47379101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203030927U Expired - Fee Related CN202625881U (en) | 2012-06-27 | 2012-06-27 | Low-temperature multi-effect tube steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202625881U (en) |
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2012
- 2012-06-27 CN CN2012203030927U patent/CN202625881U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |