CN1171799C - Multi-effect distilling process and equipment for desalinating seawater - Google Patents
Multi-effect distilling process and equipment for desalinating seawater Download PDFInfo
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- CN1171799C CN1171799C CNB021260230A CN02126023A CN1171799C CN 1171799 C CN1171799 C CN 1171799C CN B021260230 A CNB021260230 A CN B021260230A CN 02126023 A CN02126023 A CN 02126023A CN 1171799 C CN1171799 C CN 1171799C
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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
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- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Abstract
The present invention discloses a multiple-effect distillation seawater desalting method and a device. The method mainly comprises the steps: air extraction by pressure difference of liquid level, seawater preheating, evaporation and condensation, flash evaporation by freshwater, flash evaporation by dense water, etc. The device is composed of a condenser, a heat exchanger, a steam ejector, a system pipeline and pumps. Heating steam is used as a heat source, the seawater is desalted, and the freshwater is prepared. The present invention has the advantages that the device is stable to operate, the consumed electrical power (power consumption of pumps) is low during operation, the heat transfer efficiency is high, and the water supply of the evaporator is uniform and smooth; the method and the device are an ideal method and an ideal device for sea water desalination of the middle type, the large type and the oversized type.
Description
Invention field
The present invention relates to a kind of multiple-effect distillation seawater desalination method and the employed device of this method, particularly a kind ofly adopt flyback preheating is fed water step by step step by step, the liquid level constant pressure difference is bled and the multiple-effect distillation seawater desalination method and the device of the uniform feedwater step of overflow capillary.Here the unit that it is the water distilling apparatus of core that " effect " is meant with a vaporizer.
Background technology
At present, existing in the world multiple-effect distillation seawater desalination method and device by the feedwater order and steam heating order between imitating, can be divided into along formula and flyback formula multi-effect distilling desalination mode, and they have separately advantage and shortcoming respectively:
1, along formula distillation desalination mode, the raw material feedwater is not preheated to first effect by imitating most preheater, and by entering the evaporation of first single-effect evaporator after external heat source (steam or the add hot water) heating, the secondary steam that evaporates enters second single-effect evaporator remaining dense water in the first effect evaporation back (imitating feedwater as second) is evaporated, below each imitates that the rest may be inferred, until the last effect.
Its shortcoming is: 1. former effect confluents are big, form thicker liquid film in the tube bank of vaporizer, and heat transfer coefficient is low.
2. last a few effect concentration of seawater strengthens successively and causes " temperature decline " on-the-spot serious, influences secondary steam and utilizes degree.
3. if will utilize between effect the pressure reduction feedwater, can only adopt vertically, should not make large-scale or super-huge device.Adopt horizontally, also need give water-circulating pump.
2, flyback formula distillation desalination mode: the raw material feedwater is by the most one not imitating and feed, squeeze into last effect successively by recycle pump, imitate until first, heating steam is imitated by first and is entered vaporizer, heated feed water, the secondary steam that evaporates enter second and imitate, and heat the feedwater (seawater) in second single-effect evaporator, the rest may be inferred for each effect later on, until the most one imitating.
Be characterized in: feedwater order is by the most one imitating to first and imitate, and the secondary steam that heating steam and every effect produce is then imitated by first and entered back one effect until an effect the most not.
Its shortcoming is: 1. enter preceding effect (temperature is higher, and pressure is higher) successively because feedwater is imitated (temperature is low, pressure is low) by the end, need the recycle pump pressurizing feedwater;
2. squeeze into former effects when reducing recycle pump quantity when adopting will the dense water of adjacent several effects to compile by recycle pump, each imitates temperature and pressure should not form uniform gradient, easily causes the not enough of heat interchanging area and wastes;
3. first effect and former effect strengthen to water concentration, and " temperature decline " phenomenon of generation influences secondary steam and utilizes degree.
3, existing multi-effect distilling desalination method and device no matter along journey mode or flyback mode, all exists following shortcoming:
1. every effect feedwater is all shower nozzle and sprays pattern, has the circle spray region overlapping of shower nozzle and is sprayed onto the invalid feedwater in addition of tube bank zone, is unfavorable for abundant heat exchange; First three comb bundle is washed away serious wear.The easy fouling of shower nozzle is stopped up.
2. every effect non-condensable gas extracts by extraction pipe direct connection vacuum pump, influences the working pressure of every effect, makes it wayward, is difficult for forming uniform pressure gradient.Fluctuation of service.
Order of the present invention be overcome above-mentioned shortcoming, provide a kind of stable, it is low that pump horsepower consumes, the heat transfer efficiency height, feedwater is unobstructed multiple-effect distillation seawater desalination method and device evenly.
The object of the present invention is achieved like this: comprise that seawater preheating, evaporation, condensation and non-condensable gas extract step in each is imitated, comprise the uniform step of feedwater during wherein evaporation goes on foot and gathers, it is characterized in that:
Also comprise fresh water flash distillation step, be used for the fresh water that the preheating condensing steps with every effect produced and carry out flash distillation that the steam after its flash distillation is as one of evaporation thermal source of next effect, the flasher that the fresh water after the flash distillation is sent into next effect carries out flash distillation;
The flash distillation step that also comprises concentrated seawater is used for imitating the concentrated seawater of discharging behind the evaporation step with last one and carries out flash distillation, further to obtain steam;
Described seawater preheating step is the required seawater of this effect of preheating evaporation step both, also the required seawater of the last effect evaporation step of preheating;
Described non-condensable gas extracts step and takes to wait between every adjacent effect pressure reduction to extract method, and the extraction pressure of imitating before promptly the pressure of the extraction of back one effect is adjacent exceeds an equivalent difference.
The uniform step of described feedwater adopts the feedwater of overflow capillary uniform.
The employed device of a kind of right 1 described multiple-effect distillation seawater desalination method, comprise the multiple-effect device, non-condensable gas draw-out device, steam ejector, seawater service pump, dense water pump, fresh water pump, interchanger, the condenser that are coupled to each other, each effect in the wherein said multiple-effect device comprises seawater preheating device, vaporizer, the steam-in of this vaporizer and seawater preheating device all is connected with the steam ejector outlet, secondary steam outlet and next of vaporizer are imitated the steam-in and are connected, by that analogy; The secondary steam outlet of the vaporizer that imitate at end one and the inlet that connects fresh water pump after condenser is connected, inlet with described fresh water pump inlet and dense water pump behind its condensation water outlet and the dense water out heat exchangers in series is connected, and the seawater of the seawater preheating device of imitating with the end behind seawater feedwater pump outlet heat exchangers in series and the condenser enters the mouth and is connected; Non-condensable gas extracts device and is connected with the non-condensable gas outlet of each effect; In described vaporizer seawater inlet, be provided with the feedwater uniform device, it is characterized in that: also comprise fresh water flasher and dense water flasher; The described seawer outlet one tunnel of getting the seawater preheating device in the one effect device of back connects the seawater inlet of the vaporizer of this effect, and another road is connected with the seawater inlet of the last one seawater preheating device of imitating, by that analogy; The preheater of described each effect is connected with described fresh water flasher inlet with the condensation-water drain of vaporizer, and its water outlet is connected with the fresh water flasher inlet of next effect, and its flash steam outlet is connected with the steam-in of the vaporizer of next effect; The first dense water out of imitating is connected with the inlet of the dense water flasher of next effect, and its dense water out is connected with the inlet of the dense water flasher of an effect thereafter, and its flash steam exports with the steam-in of the vaporizer of an effect thereafter and is connected, by that analogy;
It is that liquid level is differential that described non-condensable gas extracts device, voltage balancer series connection back by one of every effect connects to form with vacuum pump, this voltage balancer comprises shell, overflow extraction pipe, at outer casing underpart first inlet mouth and air outlet are arranged, second inlet mouth is arranged on the top, the overflow extraction pipe vertically places in the shell, its lower end is connected with described air outlet, outside this overflow extraction pipe, be full of water, the voltage balancer air outlet of every effect is connected with first inlet mouth of next effect, and its second inlet mouth is connected with the non-condensable gas outlet of the vaporizer of this effect; First voltage balancer first inlet mouth sealing of imitating, the voltage balancer of connecting again after imitate at the end, the air outlet of this voltage balancer is connected with vacuum pump inlet, and its second inlet mouth is connected with the non-condensable gas outlet of described condenser.
Feedwater uniform device in the described vaporizer is overflow type capillary feedwater uniform device, comprise aqua storage tank, upflow tube, capillary fiber felt, upflow tube vertically is distributed in the aqua storage tank, its lower end is communicated with the aqua storage tank bottom, connect the capillary fiber felt in the aqua storage tank bottom surface, contact with the uppermost heat transfer tube of vaporizer below it.
Advantage of the present invention is the structure advanced person, and flow process is reasonable, possesses following characteristics:
1, operates steadily.Because adopt liquid level pressure reduction non-condensable gas to extract device, every single-effect evaporator can form the constant gradient pressure difference, has avoided because the pressure transient of directly bleeding and causing.
2, pump horsepower consumption is low, saves between effect and saves a large amount of electric energy to water-circulating pump.
3, heat transfer efficiency height forms even natural falling film evaporation, improves heat transfer coefficient greatly.
4, evaporator feedwater is evenly unobstructed, has avoided the uneven and spray orifice fouling latch up phenomenon of shower nozzle spray.
Description of drawings
The invention will be further described to give the drawings and Examples of closing apparatus of the present invention below.
Fig. 1 is the overall pie graph of device of the present invention;
Fig. 2 is the structural representation that non-condensable gas extracts the voltage balancer in the device;
Fig. 3 is the structure iron of overflow type capillary feedwater uniform device, and wherein a figure is a stereographic map; B figure is the A-A sectional view of a figure;
Fig. 4 is the structural representation of vaporizer;
Fig. 5 is the structural representation of seawater preheating device.
Embodiment
Referring to Fig. 1, device of the present invention is a unit with every effect substantially, uses pipe connection between every effect.Comprise in every effect: vaporizer 3, preheater 2, non-condensable gas extract a voltage balancer 11, fresh water flasher 5, the dense water flasher 4 (not having in first effect) in the device 1, preheater 2 is the tube and shell heat exchanger structure, its seawer outlet 26 is connected with the seawater inlet 36 of vaporizer 3 and the seawater inlet 25 of last one preheater 2 of imitating, its thermal source inlet 23 connects the secondary steam (the 2nd imitates) of vapour source (first imitates) or last effect, it coagulates water out 24 and is connected with the inlet 51 of fresh water flasher 5, and the water out 52 of this flasher 5 is connected with the fresh water flasher inlet of imitating down; The seawer outlet 37 of vaporizer 3 is connected with dense water flasher 4 inlets 41 of imitating down, the thermal source of vaporizer 3 inlet 32 is connected with vapour source, it coagulates water out 33 and also is connected with the inlet 51 of fresh water flasher 5, and the flash distillation steam ports 53 of the secondary steam of vaporizer 3 (being seawater steam) outlet 38 and fresh water flasher 5 all enters the mouth with the thermal source of the vaporizer 3 of effect down and preheater 2 and 32 is connected with 23.The non-condensable gas of the vaporizer 3 of this effect outlet 34 is connected with the second inlet mouth C of voltage balancer 11, its first inlet mouth A is connected with the air outlet B of the voltage balancer 11 of last effect, first imitates the first inlet mouth A sealing of voltage balancer 11, and the air outlet B of voltage balancer 11 is connected with the first inlet mouth A of the voltage balancer 11 of imitating down in this effect.Mode of connection between every effect is all identical, no longer strolls and states.
In the device of above-mentioned every effect, the seawater preheating step that preheater 2 is finished in the inventive method is poly-, evaporation and condensing steps in vaporizer 3 Method Of Accomplishments, the uniform step of seawater in feedwater uniform device 35 Method Of Accomplishments in it, fresh water flash distillation step in fresh water flasher 5 Method Of Accomplishments, the concentrated seawater flash distillation step in dense water flasher 4 Method Of Accomplishments.Because the seawer outlet of preheater 2 both was connected with the seawater inlet of the vaporizer 3 of this effect, also entering the mouth with the seawater of last one preheater 2 of imitating is connected, so it both can this effect of preheating seawater, but also imitates seawater in the preheating.
Device of the present invention also has shared device except that above-mentioned respectively imitating the device, and these devices comprise: thermal source steam ejector 6, seawater service pump 7, concentrated water discharge pump 8, fresh water discharge pump 9, interchanger 10, condenser 13, vacuum pump 12.The outlet of steam ejector 6 is connected with 1-32 with the first preheater 1-2 of imitating and the thermal source steam-in 1-23 of vaporizer 1-3; Interchanger 10 is used for the waste heat and the seawater feedwater of the fresh water that will discharge and dense water and exchanges, it is made up of fresh water and dense water two portions, behind the fresh water flasher n-5 of the most last effect and dense water flasher n-4 water out heat exchangers in series 10, be connected with the inlet of fresh water pump 9 respectively with dense water pump 8, the outlet of seawater service pump 7 connect the seawater passage of this interchanger 10 be connected to the end after the seawater passage of condenser 13 is connected and imitate the seawater inlet of preheater n-2, and connect a seawater discharge outlet 15, the inlet of another medium channel of condenser 13 and last vaporizer n-3 of imitating, dense water flasher n-4, the vapour outlet of fresh water flasher n-5 connects, also has one road inlet that is connected to steam ejector 6, condenser 13 coagulate the inlet that the mouth of a river is connected to fresh water pump 9, the non-condensable gas outlet of condenser 13 and non-condensable gas extract second of last voltage balancer n-11 in the device 1 and enter gas port and be connected.Above-mentioned non-condensable gas is connected with the inlet of vacuum pump 12 after extracting voltage balancer 11 series connection of device 1 by every effect again, and the pressure reduction non-condensable gas of finishing jointly in the inventive method that waits extracts step.
Fig. 2 is the structural representation that non-condensable gas of the present invention extracts the voltage balancer 11 in the device 1.
This voltage balancer 11 comprises shell 111, overflow extraction pipe 112, the first inlet mouth A and air outlet B are arranged in the bottom of shell 111, the second inlet mouth C is arranged on the top, overflow extraction pipe 112 vertically places in the shell 111, its lower end is connected with described air outlet B, be full of water D outside this overflow extraction pipe 112, the voltage balancer air outlet B of every effect is connected with the first inlet mouth A of next effect, and its second inlet mouth C is connected with the not condenser outlet of the vaporizer 3 of this effect.
Referring to Fig. 3, feedwater uniform device 35 in the described vaporizer 3 is overflow type capillary feedwater uniform device, comprise aqua storage tank 351, upflow tube 352, capillary fiber felt 353, upflow tube 352 vertically is distributed in the aqua storage tank 351, its lower end is communicated with the bottom of aqua storage tank 351, connect capillary fiber felt 353 in the bottom surface of aqua storage tank 351, contact with vaporizer 3 uppermost heat-exchanging tube bundles 31 (referring to Fig. 4) below it.
Referring to Fig. 4, the basic structure of vaporizer 3 of the present invention is general tube shell type structures, comprise shell 39, there is horizontal tube bank 31 in portion within it, steam enters the inlet 32 of tube bank 31 1 ends, in tube bank 31, heat is passed to the seawater that is passed through its outside and be heated evaporation, water out 33 is with fixed attention arranged, non-condensable gas outlet 34 is on top arranged in the other end bottom of restraining 31.Feedwater uniform device 35 is arranged at the top in shell 39, and there is seawater inlet 36 shell upper end, and there is seawer outlet 37 lower end, in the upper side of shell secondary steam outlet 38 is arranged.
Referring to Fig. 5, preheater 2 of the present invention also is a tube shell type structure, and horizontal tube bank 21 is arranged in shell 22, and its two ends are steam-in 23 and outlet 24, and the upper and lower ends of shell 22 has sea intake 25 and outlet 26.
Working process of the present invention is as follows:
1, seawater feedwater process: raw material seawater is squeezed into the heat absorption preheating of interchanger 10 with the dense water of the fresh water produced and discharging through seawater service pump 7, again through the preheating of condenser 13, wherein a part emits through discharge outlet 15, and another part reaches design temperature and enters the most last effect preheater n-2.Through further preheating, a part feeds the aqua storage tank 351 of overflow type capillary feedwater uniform device 35 (see figure 3)s in this single-effect evaporator n-3, be evenly distributed in the capillary fiber felt 353 through upflow tube 352, through the wicking action of fibrefelt 353 and surface tension, the action of gravity of water, be distributed to more equably with it by in the every tube bank 31 of touching, and form defluent liquid film every tube bank 31 outsides, flash to secondary steam after restrain 31 interior steam heating.
The seawater that another part is preheated enters the preheater 2 further preheatings of last effect, and a part enters 1st effective evaporator 3 evaporations then.
2, the steam process of circulation:
Heating steam by steam ejector 6 with the end imitate a part of low-pressure steam (steam of emitting the vaporizer n-3 of imitating from the end and two flasher n-4 and the n-5) extract out mix after, form comparatively high temps heating steam and enter the 1st effect, the outer seawater of tube bank 1-31 of wherein most of heating the 1st single-effect evaporator 1-3, produce secondary steam, in tube bank 1-31, be condensed into fresh water simultaneously; Small portion enters the feedwater of this effect of this effect preheater 1-2 preheating seawater, is condensed into fresh water simultaneously in preheater 1-2.The merging of two portions fresh water enters this effect fresh water flasher 1-5, the secondary steam merging that lightens steam and vaporizer 1-3 generation after the step-down flash distillation enters second heating steam of imitating as the second single-effect evaporator 2-3, imitate since second, also incorporate of the heating steam of the steam of this effect secondary steam and fresh water flash distillation into by the steam that the dense water of last effect high temperature enters after the dense water flasher 6 step-down flash distillations, imitate until the end by that analogy as next effect.The secondary steam part that imitate at the end adds aforesaid circulation, and a part enters condenser 13, is discharged by fresh water pump 9 as product fresh water behind the fresh water that congeals into.
3, non-condensable gas extracts the working process of device 1:
For the noncondensable gas of removing in each single-effect evaporator 3 and the condenser 13 is kept the stable vacuum tightness pressure of every effect to guarantee heat-exchange system, voltage balancer 11 series connection backs are linked with vacuum pump 12, the second inlet mouth C of the voltage balancer 11 of every effect is connected with the outlet of the non-condensable gas of this single-effect evaporator 3, after vacuum pump 12 work, the air outlet B vacuum tightness of the voltage balancer 11 of this effect is reduced to design pressure, and the non-condensable gases in the vaporizer 3 are taken out, and keep this pressure.Overcome the stream potential difference height (adjusting overflow extraction pipe 112 highly obtains) of a setting simultaneously, extract by the non-condensable gas of previous stage voltage balancer 11 with preceding 1st effective evaporator 3.A pressure of imitating the second inlet mouth C of voltage balancer exceeds a stream potential difference pressure on the second inlet mouth C pressure ratio of this sample effect voltage balancer 11.Same principle, the pressure of the second inlet mouth C of the voltage balancer 11 of every adjacent aftereffect exceed this and imitate liquid level difference pressure of identical inlet mouth C, like this, imitate first from the end and imitate the differential pressure gradients that can form setting, to guarantee the constant pressure of corresponding every single-effect evaporator 3.
Few portion water steam that each effect voltage balancer 11 is taken out of from corresponding single-effect evaporator 3 will be dissolved in the water seal of this effect voltage balancer 11, and the water that has more is spilled over to next stage, discharge through vacuum pump 12.
4, concentrated stream passes through journey:
Dense water after every effect is evaporated and the dense water after the flash distillation of this effect enter next and imitate dense water flasher 4, and the steam after the step-down flash distillation is incorporated next into and imitated as heating steam of 1st effective evaporator 3 down, imitate after interchanger 10 heat exchange are discharged by dense water pump 8 until the end.
5, the fresh water process of circulation:
Fresh water after fresh water that every effect condensation goes out and the last effect flash distillation enters this effect fresh water flasher 5, steam after the step-down flash distillation, incorporate of the heating steam of next effect into as lower effective evaporator 3, after imitate at the end, through interchanger 10 heat exchange, discharge by fresh water pump 9 as product fresh water with the fresh water that coagulates of condenser 13.
The present invention has overcome many defectives of original multiple-effect distillation seawater desalination method and device, is that a new generation is medium-and-large-sized, the ideal style of ultra-large type multiple-effect distillation sea water desalting.
Claims (3)
1, a kind of multiple-effect distillation seawater desalination method comprises that seawater preheating, evaporation, condensation and non-condensable gas extract step in each is imitated, comprise the uniform step of feedwater during wherein evaporation goes on foot and gathers, and it is characterized in that:
Described first heating steam of imitating in preheating and the evaporation step is supplied with by the external world, is the secondary steam after the evaporation of last effect from the second main thermal source of imitating later preheating and evaporation;
Also comprise fresh water flash distillation step, be used for the fresh water that preheating condensing steps and evaporation step with every effect produced and carry out flash distillation that the steam after its flash distillation is as one of evaporation thermal source of next effect, the flasher that the fresh water after the flash distillation is sent into next effect carries out flash distillation;
The flash distillation step that also comprises concentrated seawater is used for imitating the concentrated seawater of discharging after an evaporation step or the last effect concentrated seawater flash distillation step with first and carries out flash distillation, further to obtain steam; The end imitate fresh water after the flash distillation and steam after condensation as product fresh water;
Described seawater preheating step is the required seawater of this effect of preheating evaporation step both, also the required seawater of the last effect evaporation step of preheating;
Described non-condensable gas extracts step and takes to wait between every adjacent effect pressure reduction to extract method, is used for extracting the non-condensable gas that each single-effect evaporator produces, and the extracting vacuum degree of imitating before promptly the vacuum tightness of the extraction of back one effect is adjacent exceeds an equivalent difference;
The uniform step of described feedwater adopts the feedwater of overflow capillary uniform.
2, the employed device of the described multiple-effect distillation seawater desalination method of a kind of claim 1, comprise the multiple-effect device, non-condensable gas draw-out device, steam ejector, seawater service pump, dense water pump, fresh water pump, interchanger, the condenser that are coupled to each other, each effect in the wherein said multiple-effect device comprises seawater preheating device, vaporizer, the steam-in of this vaporizer and seawater preheating device all is connected with the steam ejector outlet, secondary steam outlet and next of vaporizer are imitated the steam-in and are connected, by that analogy; The secondary steam outlet of the vaporizer that imitate at end one and the inlet that connects fresh water pump after condenser is connected, inlet with described fresh water pump inlet and dense water pump behind its condensation water outlet and the dense water out heat exchangers in series is connected, and the seawater of the seawater preheating device of imitating with the end behind seawater feedwater pump outlet heat exchangers in series and the condenser enters the mouth and is connected; Non-condensable gas extracts device and is connected with the non-condensable gas outlet of each effect; In described vaporizer seawater inlet, be provided with the feedwater uniform device, it is characterized in that: also comprise fresh water flasher and dense water flasher; The described seawer outlet one tunnel of getting the seawater preheating device in the one effect device of back connects the seawater inlet of the vaporizer of this effect, and another road is connected with the seawater inlet of the last one seawater preheating device of imitating, by that analogy; The preheater of described each effect is connected with described fresh water flasher inlet with the condensation-water drain of vaporizer, and its water outlet is connected with the fresh water flasher inlet of next effect, and its flash steam outlet is connected with the steam-in of the vaporizer of next effect; The first dense water out of imitating is connected with the inlet of the dense water flasher of next effect, and its dense water out is connected with the inlet of the dense water flasher of an effect thereafter, and its flash steam exports with the steam-in of the vaporizer of an effect thereafter and is connected, by that analogy;
It is that liquid level is differential that described non-condensable gas extracts device, voltage balancer series connection back by one of every effect connects to form with vacuum pump, this voltage balancer comprises shell, overflow extraction pipe, at outer casing underpart first inlet mouth and air outlet are arranged, second inlet mouth is arranged on the top, the overflow extraction pipe vertically places in the shell, its lower end is connected with described air outlet, outside this overflow extraction pipe, be full of water, the voltage balancer air outlet of every effect is connected with first inlet mouth of next effect, and its second inlet mouth is connected with the non-condensable gas outlet of the vaporizer of this effect; First voltage balancer first inlet mouth sealing of imitating, the voltage balancer of connecting again after imitate at the end, the air outlet of this voltage balancer is connected with vacuum pump inlet, and its second inlet mouth is connected with the non-condensable gas outlet of described condenser.
3, effect distillation seawater desalinating device of multi according to claim 2, it is characterized in that: the feedwater uniform device in the described vaporizer is overflow type capillary feedwater uniform device, comprise aqua storage tank, upflow tube, capillary fiber felt, upflow tube vertically is distributed in the aqua storage tank, its lower end is communicated with the aqua storage tank bottom, connect the capillary fiber felt in the aqua storage tank bottom surface, contact with the uppermost heat transfer tube of vaporizer below it.
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| CNB021260230A CN1171799C (en) | 2002-08-09 | 2002-08-09 | Multi-effect distilling process and equipment for desalinating seawater |
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| CNB021260230A CN1171799C (en) | 2002-08-09 | 2002-08-09 | Multi-effect distilling process and equipment for desalinating seawater |
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| CN1171799C true CN1171799C (en) | 2004-10-20 |
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| CN106698563A (en) * | 2017-01-25 | 2017-05-24 | 国家海洋局天津海水淡化与综合利用研究所 | Multi-effect membrane distillation seawater desalination system based on mechanical compression |
| CN107188256B (en) * | 2017-05-26 | 2019-09-10 | 广州中国科学院先进技术研究所 | Marine seawater desalination system |
| CN109292858B (en) * | 2018-10-29 | 2020-02-21 | 山东大学 | Fresh water collection system and seawater desalination system thereof |
| CN110038314B (en) * | 2018-10-29 | 2020-12-08 | 山东大学 | Design method of steam pipe flow stabilizer and seawater desalination system thereof |
| CN212269517U (en) * | 2020-06-05 | 2021-01-01 | 北京清建能源技术有限公司 | Pure hot distilled water preparation facilities |
-
2002
- 2002-08-09 CN CNB021260230A patent/CN1171799C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423311B (en) * | 2007-10-29 | 2012-09-12 | 中国昆仑工程公司辽宁分公司 | Energy-saving method for preventing non-condensable gas from evaporating for alcohol ketone acid wastewater |
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| CN1397500A (en) | 2003-02-19 |
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