CN208776346U - Small modules formula thermal method high-salt wastewater desalination system - Google Patents
Small modules formula thermal method high-salt wastewater desalination system Download PDFInfo
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- CN208776346U CN208776346U CN201821159839.XU CN201821159839U CN208776346U CN 208776346 U CN208776346 U CN 208776346U CN 201821159839 U CN201821159839 U CN 201821159839U CN 208776346 U CN208776346 U CN 208776346U
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 29
- 239000002351 wastewater Substances 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000013505 freshwater Substances 0.000 claims abstract description 45
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000000945 filler Substances 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 32
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 20
- 238000001704 evaporation Methods 0.000 claims description 15
- 230000008020 evaporation Effects 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000009938 salting Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000003149 assay kit Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000008236 heating water Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 88
- 238000007791 dehumidification Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 12
- 239000012266 salt solution Substances 0.000 abstract description 5
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- 239000011257 shell material Substances 0.000 description 23
- 150000003839 salts Chemical class 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 238000011033 desalting Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000013535 sea water Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000000149 chemical water pollutant Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000010850 salt effect Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses a kind of small modules formula thermal method high-salt wastewater desalination system, mainly includes humidifier, dehumidifier, solution preheater, water pump, flow controller, blower.Solution enters in humidifier after the heating of solution preheater is mixed with concentrated solution, and directly spray to filler surface is exchanged with cold air caloic, and remaining concentrated solution is recycled；Hot wet air heating enters after dehumidifier with cooling water heat mass transter, is driven into humidifier by blower and is recycled, and condensation generates fresh water and further cools down through solution preheater, starts the cycle over into dehumidifier, extra fresh water collecting gets up.The utility model is combined using spray and packed tower, strengthens humidification dehumidification process.Simple and compact for structure, miniaturization, modularization, scalable；Have a wide range of application, handles high level salt solution；Air and solution circulation flow are dynamic, recycle the latent heat of vaporization, heat utilization efficiency is high, and low energy consumption；It can be run under low-temperature atmosphere-pressure, long service life, manufacture operation expense is low；The diversification of energy source.
Description
Technical field
The utility model belongs to thermal method desalting technology field, is related specifically to a kind of small based on what is run under low-temperature atmosphere-pressure
Type modular thermal method high-salt wastewater desalination system, and have miniaturization, portable, modular feature.
Background technique
Current common salting liquid mainly includes following sections: first is that the seawater for desalinating production fresh water, salinity one
As in 3.5wt% or so；Second is that the bitter of hinterland；Third is that the Industry Waste generated in the enterprise production process such as coal chemical industry
Water；Fourth is that the sanitary sewage and landfill leachate etc. that are generated in daily life.Currently used solution desalination process has low temperature more
Imitate distillation, hyperfiltration, multistage flash distillation, hotting mask coproduction, electroosmose process etc..Hyperfiltration is moisture under the action of high-pressure pump
Son realizes the separation of salt and water by reverse osmosis membrane, and the method needs lasting offer electric energy or mechanical energy, and as feed liquid is dense
The increase of degree, required pump work increase cause processing cost to increase, and produce water quality and are also declined, the reduced service life of film, and
Feed liquid after concentration can not carry out subsequent be effectively treated.Traditional multiple-effect evaporation formula (Chinese utility model patent application number
201010509740.X) and the technologies such as multistage flash distillation formula (Chinese utility model patent application number 201310411226.6) often because
Some common issues and be difficult to be commercialized popularization and use.First is that device bulky complex, volume are big, cost of investment is high, second is that with
The increase of feed concentration, evaporator interior surface can lead to the problem of serious scale and corrosion, and device heat transfer efficiency reduces, this is right
The corrosion-and high-temp-resistant of material can propose very high requirement, and treatment of dirt and device maintenance cost increase.
Humidification dehumidifying desalting technology is a kind of novel thermal method desalting technology, the rain cycle mistake of the technical modelling nature
Journey, using moving air as the carrier of vapor, air is humidified in humidifier by hot material liquid, after carrying a certain amount of vapor
It dehumidifies into dehumidifier, poor using the saturated humidity of air, extra vapor condensation generates fresh water, and remaining feed liquid reaches dense
The effect of contracting.Compared with other technologies, humidification dehumidifying desalting technology have structure design simple, equipment investment and operating cost compared with
The advantages that low, using low-grade energy or renewable energy.Humidification dehumidifying desalting technology is dense in sea water desalination, industrial wastewater
The fields such as contracting, landfill leachate concentration processing and sanitary sewage disposal have broad application prospects.
After searching and discovering the prior art, application number 201010509740.X discloses a kind of spray evaporation air and adds
Wet dehumidification type solar energy sea water desalination apparatus, device uses air as cycle fluid, but seawater does not preheat, with hot-air temperature
Poor big, humidification efficiency is low, and is disposed with multiple condensing heat exchangers, and apparatus structure is complicated, and installation and debugging are difficult, is unfavorable for device
Commercialization is promoted.
Application number 201611214327.4 discloses a kind of double caloic coupled solar hot-air type vapo(u)rization systems and its side
Method, system is by the vapor and corresponding sensible heat latent heat in recycling humid air, but remaining concentrated solution is expelled directly out, and is not recycled
It uses, system has difficulties in actual operation to the processing of high level salt solution.
Utility model content
It is in view of the above-mentioned defects in the prior art and insufficient, the purpose of this utility model is that proposing a kind of based on normal in low temperature
The small modules formula thermal method high-salt wastewater desalination system carried out is depressed, system is combined using shower humidification and packed tower humidification,
It is aided with process of the air as cycle fluid forced humidification dehumidification solution, simple and compact equipment structure is small in size, is easy to
Dismounting and cleaning, convenient transportation can modularization use；Solution circulation concentration, can handle high level salt solution；Systematic heat utilization rate is high,
Low energy consumption, and water yield and production water stay in grade are reliable, and operating cost is low；The diversification of energy source, can be with solar energy, industrial waste heat
Deng combination.
To reach the above purpose of utility model, the utility model is achieved through the following technical solutions:
A kind of small modules formula thermal method high-salt wastewater desalination system, comprising: humidifier, flow controller A, water pump A, liquid level
Controller, blower, blast regulator, drain valve A, concentrated solution slot, dehumidifier, flow controller B, water pump B, drain valve B, fresh water
Slot；
The humidifier includes: evaporation spray thrower, shell A, filler A, sieve plate A, heater, solution inlet, solution circulation
Outlet, dense saline solution outlet, cool air inlet and Hot wet air heating outlet；The sieve plate A is fixed on lower part in humidifier, and molten
Liquid ullage, the top sieve plate A are placed with filler A, and filler A is paved with sieve plate A, for increasing the contact surface of cold air and solution
Product strengthens humidification；The heater is located at below sieve plate to be contacted with solution, is used for heated solution；The solution recycles
Mouth is located at the lower part shell A, and it is connected with water pump A arrival end；The outlet end the water pump A is connected with evaporation spray thrower arrival end
It connects, connecting line is equipped with flow controller A；The evaporation spray thrower is located at humidifier top, enters for spray solution and adds
Wet device；The Hot wet air heating outlet is set at the top of shell A, is connected with the Hot wet air heating entrance of dehumidifier by pipeline；
Cool air inlet is set to the lower part shell A, is located at below sieve plate A and passes through above liquid level of solution, and with fan outlet end
Pipeline is connected；The dense saline solution outlet is set to the bottom shell A, and it is connected with drain valve A arrival end；
The dehumidifier include: cool water shower device, shell B, filler B, sieve plate B, fresh water loop exit, water outlet,
Hot wet air heating entrance and cold-air vent；The sieve plate B is fixed on lower part in dehumidifier, and in fresh water ullage, filler B is put
It is placed in above sieve plate B, filler B is paved with sieve plate B, for increasing the contact area of Hot wet air heating and cooling water, strengthens dehumidification process；
The fresh water loop exit is connected with water pump B arrival end, and the outlet end water pump B is connected with cool water shower device, on connecting line
Equipped with flow controller B；The Hot wet air heating entrance is set to the lower part shell B, is located at below sieve plate B and on fresh water liquid level
Side, and export with the Hot wet air heating of humidifier and be connected by pipeline；The cold-air vent is located at the top of shell B, and its with
Fans entrance end is connected；The water outlet is located at the bottom shell B, and it is connected with drain valve B arrival end；
The blower is located on the outside of humidifier, for the cold air in dehumidifier to be delivered in humidifier, and itself and wind
Amount adjuster is connected, for controlling entrance air quantity, regulating system fresh water production rate；
The concentrated solution slot position is below humidifier drain valve A, for holding dense saline solution；The fresh-water tank is located at dehumidifying
Below device drain valve B, for holding production fresh water.
Further, the above-mentioned system further includes solution preheater, and the solution preheater is located on the outside of dehumidifier, solution
The outlet end of the hydrothermal solution to be added of preheater is connected with solution inlet in humidifier, and connecting line is equipped with fluid level control valve, uses
In control entrance amount of solution；Solution preheater fresh water arrival end is connected with the outlet end water pump B, and connecting line is equipped with flow control
Device B processed, solution preheater water outlet end are connected with cool water shower device.
Further, above-mentioned shell is one of stainless steel, polypropylene, polyethylene, polyvinyl chloride or glass-reinforced plastic material
Or two or more combination；Hull outside wraps up thermal insulation material, has the function of keeping the temperature and prevents from being corroded by salting liquid.
Further, above-mentioned filler is the group of one or more of plastic filler, ceramic packing, glass reinforced plastic filler
It closes.
Further, the shape of above-mentioned filler be Raschig ring, Pall ring, cascade ring, arc saddle type, square saddle type, ring intalox shape,
The combination of one or more of spherical shape.
Further, above-mentioned connecting line is one or more of polypropylene, polyethylene or pvc material
Combination, be enclosed with thermal insulation material outside pipeline；Sieve plate uses porous stainless steel plate or plastic plate.
Further, above-mentioned solution preheater is plate heat exchanger, votator or shell-and-tube heat exchanger.
Further, above system further includes automatic control system, which includes the molten of humidifier setting
Liquid concentration detector and temperature monitor, temperature monitor, liquidometer and the Water Test Kits of dehumidifier setting, solution preheater
The temperature monitor of setting.
The small modules formula thermal method high-salt wastewater desalination system, the energy source that heater is utilized are the sun
Energy, factory's waste heat, engine of boat and ship waste heat from tail gas or electric heating.
The method that thermal method desalination is carried out using above-mentioned small modules formula thermal method high-salt wastewater desalination system, including following step
It is rapid:
Step 1, solution is preheated by solution preheater, and the dense saline solution in solution and humidifier after preheating is mixed
It closes, water pump A, flow controller A, evaporation spray thrower is passed sequentially through after heated device heating and is entered in humidifier, in humidifier
Filler A collide, sprawl, be crushed, splash；
Step 2, unsaturated cold air is driven into humidifier lower part via blower, cold air is in humidifier to top
Flowing carries out caloic with solution and exchanges, and obtains the humid air of heat, and remaining dense saline solution reaches humidifier bottom and carries out next time
Circulation, dense saline solution reach and enter concentrated solution slot through drain valve A after a certain concentration；
Step 3, the Hot wet air heating after heating humidification is dehumidifying via Pipeline transport to dehumidifier lower part Hot wet air heating entrance
It is flowed up in device, carries out caloic with the cooling water of dehumidifier top cool water shower device spray and exchange, air is by cool-down dehumidification；
Step 4, the cold air after cool-down dehumidification is discharged from dehumidifier top cold-air vent, is driven by pipeline through blower
Into humidifier, start to recycle next time；
Step 5, the fresh water that dehumidification process generates flow to dehumidifier bottom, passes sequentially through water pump B, stream through fresh water loop exit
Amount controller B enters solution preheater, preheats to solution, and fresh water is further cooled by, then through cool water shower device into
Enter dehumidifier, dehumidification process, extra fresh water enter fresh-water tank through drain valve B next time for beginning.
The utility model has the following beneficial effects:
Apparatus structure described in the utility model is simple and compact, miniaturization, modularization, convenient transportation, scalable, can be multistage
It is used in series, full-automatic can run control, it is unattended, it is easy to use.
Device described in the utility model has a wide range of application, and cannot be only used for naval vessel, island, the fresh water production in family,
The sewage treatment that can be used in the cases of emergency such as field survivorship, battlefield.Especially to the processing of high level salt solution, also have de- well
Salt effect, the processing of the waste water such as concentrate with high salt desalinated for industrial wastewater with high salt, bitter, landfill leachate, regular seawater
Provide selection scheme.
Vapor of the device described in the utility model by the way of solution and air circulation flow, after dehumidifying in cold air
And corresponding sensible heat latent heat is recycled, and carries out circulation benefit using condensation latent heat of the solution preheater to dehumidification process vapor
With plant energy consumption reduces, and energy utilization efficiency is improved.
Device described in the utility model is combined using shower humidification and packed tower humidification, is aided with air forced humidification and is followed
The process of ring fluent solution carries out air wetting, improves humidification efficiency.
Device described in the utility model is run under normal pressure, is not necessarily to vacuum pump and gas-liquid separator, filler, shell material are adopted
With nontoxic nonmetallic materials, no consumption easily worn part, long service life, device manufacturing cost and later period operation expense are low,
Improve product competitiveness.
Device described in the utility model uses direct contact type heat and mass in dehumidification process, reduces conventional equipment and adopts
The huge heat exchange area of bring with heat exchanger, so that apparatus structure is compact.
Device described in the utility model requires solution temperature low, and device can also be run when feed liquid temperature lower (< 45 DEG C),
And water yield and production water stay in grade are reliable.Device utilizes energy to source diversification, can be with solar energy, industrial waste heat, engine
The energy such as waste heat from tail gas combine.
Detailed description of the invention
Fig. 1 is small modules formula thermal method high-salt wastewater desalination system schematic diagram described in the utility model.
Fig. 2 is small modules formula thermal method high-salt wastewater desalination system processing various concentration NaCl solution described in the utility model
Water yield and salt rejection rate result figure.
Fig. 3 is small modules formula thermal method high-salt wastewater desalination system described in the utility model under different feed liquid flow condition
Handle the water yield and salt rejection rate result figure of 26wt%NaCl solution.
In figure: 1 humidifier；2 evaporation spray throwers；3 shell A；4 filler A；5 sieve plate A；6 heaters；7 flow controller A；8
Water pump A；9 drain valves；10 concentrated solution slots；11 blast regulators；12 blowers；13 fluid level control valves；14 solution preheaters；15 flows
Controller B；16 water pump B；17 dehumidifiers；18 cool water shower devices；19 shell B；20 filler B；21 sieve plate B；22 drain valve B；23
Fresh-water tank.
Specific embodiment
It elaborates with reference to the accompanying drawing to specific embodiment of the utility model.It should be noted that the present embodiment
Detailed embodiment and specific operation process under only premised on technical solutions of the utility model, are not intended to limit this reality
With novel protection scope.All any modification, equivalent replacement, improvement and so in the spirit and principles of the utility model,
It should be included within the scope of protection of this utility model.
Embodiment 1
Such as Fig. 1, small modules formula thermal method high-salt wastewater desalination system is by humidifier 1, heater 6, flow controller A7, water
Pump A8, drain valve A9, concentrated solution slot 10, blast regulator 11, blower 12, fluid level controller 13, solution preheater 14, flow control
Device B15 processed, water pump B16, dehumidifier 17, drain valve B22, fresh-water tank 23 form.
Humidifier 1 includes: evaporation spray thrower 2, shell A3, filler A4, sieve plate A5, solution inlet, solution loop exit, dense
Salting liquid outlet, cool air inlet and Hot wet air heating outlet；The sieve plate A is fixed on lower part in humidifier, and in liquid level of solution
Top, the top sieve plate A are placed with filler A, for increasing the contact area of cold air and solution, strengthen humidification；It is described molten
Liquid loop exit is located at the lower part shell A, and it is connected with water pump A arrival end；The outlet end the water pump A enters with evaporation spray thrower
Mouth end is connected, and flow controller A is provided on connecting line；The evaporation spray thrower is located at the top of shell A, for spraying
Solution enters humidifier；The Hot wet air heating outlet is set at the top of shell A, passes through pipeline with dehumidifier Hot wet air heating entrance
It is connected；Cool air inlet is located at the lower part shell A, and above liquid level of solution, is connected with fan outlet end by pipeline；
The heater is located at the lower part of humidifier, and below liquid level of solution, for heating solution to be processed；The dense saline solution goes out
Mouth is set to the bottom shell A, and it is connected with drain valve A arrival end.
The dehumidifier 17 include: cool water shower device 18, shell B19, filler B20, sieve plate B21, fresh water loop exit,
Water outlet, Hot wet air heating entrance and cold-air vent；The sieve plate B is fixed on lower part in dehumidifier, and on fresh water liquid level
Side, filler B are placed in above sieve plate B, for increasing the contact area of Hot wet air heating and cooling water, strengthen dehumidification process；It is described
Fresh water loop exit is connected with water pump B arrival end, and the outlet end water pump B is connected with cool water shower device, and connecting line is equipped with
Flow controller B；The Hot wet air heating entrance is located at the lower part shell B, is located at below sieve plate B and in fresh water ullage, and
It exports with humidifier Hot wet air heating and is connected by pipeline；The cold-air vent is located at the top of shell B, and itself and fans entrance
End is connected；The water outlet is located at the bottom shell B, and it is connected with drain valve B arrival end.
The solution preheater 14 is located on the outside of dehumidifier, and solution preheater outlet end is connected with solution inlet in humidifier
It connects, connecting line is equipped with fluid level control valve 13, for controlling entrance amount of solution, solution preheater fresh water arrival end and water pump B
Outlet end is connected, and connecting line is equipped with flow controller B, and solution preheater water outlet end is connected with cool water shower device
It connects.
The blower 12 is located on the outside of humidifier, for the cold air in dehumidifier to be delivered in humidifier, and its with
Blast regulator 11 is connected, for controlling entrance air quantity, regulating system fresh water production rate.
The concentrated solution slot 10 is located at below humidifier drain valve A, for holding dense saline solution；The fresh-water tank 23 is located at
Below dehumidifier drain valve B, for holding production fresh water.
The method that thermal method desalination is carried out using above-mentioned apparatus, comprising the following steps: solution is preheated by solution preheater, warp
Solution after crossing preheating is mixed with the dense saline solution in humidifier, passes sequentially through water pump A, flow controller after heated device heating
A, evaporation spray thrower enters in humidifier, and the filler A in hot solution and humidifier collides and forms a film in its surface spreading, portion
Broken, splashing occurs for liquid separation drop, and carries out caloic with the unsaturated cold air that humidifier lower part cool air inlet enters and exchange, and remains
Remaining concentrated solution reaches humidifier bottom and is recycled, and concentrated solution reaches and enters concentrated solution slot through drain valve A after a certain concentration；It rises
Hot wet air heating after temperature humidification is via Pipeline transport to dehumidifier lower part Hot wet air heating entrance, with dehumidifier top cool water shower
The water of device spray carries out the exchange of direct contact type caloic, and the cold air after cool-down dehumidification is arranged from dehumidifier top cold-air vent
Out, humidifier is entered through blower by pipeline, starts to recycle next time；The fresh water that Hot wet air heating generates after cool-down dehumidification is flow to
Dehumidifier bottom, passes sequentially through water pump B through fresh water loop exit, flow controller B enters solution preheater, and recycling vapor is cold
Solidifying latent heat preheats solution, and fresh water is further cooled by, and then enters dehumidifier through cool water shower device, starts next time
Dehumidification process, extra fresh water enter fresh-water tank through drain valve B.
In the present embodiment, for the automatic control for further realizing device, device is also configured with automatic control system (PLC control
System), the temperature detection of solution concentration detection device and temperature monitor, dehumidifier setting including humidifier setting
The temperature monitor that instrument, liquidometer and Water Test Kits, the solution preheater are arranged.
Embodiment 2
In the present embodiment, select the small modules formula thermal method high-salt wastewater desalination system in embodiment 1 as experiment dress
It sets, to carry out the desalting processing experiment of various concentration solution.Select respectively deionized water and salinity be 3.5wt%, 10wt%,
The NaCl solution of 15wt%, 20wt%, 26wt% are evaporated solution temperature in spray thrower and are stablized at 55 DEG C as feed liquid to be processed,
Adjusting flow controller makes the circular flow 1L/min of solution, and the circular flow of cooling water is 0.85L/min, adjusts air quantity tune
Section device makes system circulation wind speed 2.5m/s (2.65m3/ min), device stable operation 1 hour under every kind of concentration conditions.System produces
The result that water and salt rejection rate change with solution concentration is as shown in Figure 2.As can be seen that with the increase of solution concentration, system list
Position time water yield is gradually reduced, and when solution concentration is 26wt% (nearly saturation), system unit water yield is 900g/h；But it is
Salt rejection rate of uniting is still stable 99.99% or more always.The result shows that small modules formula thermal method described in the utility model is with high salt useless
Water desalination system still has good desalting effect to high level salt solution especially near saturated solution.This has widened system processing solution
Type and concentration range, for high-salt wastewater minimizing processing provide new choice direction.
Embodiment 3
In the present embodiment, select the small modules formula thermal method high-salt wastewater desalination system in embodiment 1 as experiment dress
It sets, to carry out the experiment of the saturated brine desalination under different feed liquid flow.Select the NaCl solution of 26wt% as feed liquid to be processed,
It evaporates solution temperature in spray thrower to stablize at 55 DEG C, the circular flow of cooling water is 0.85L/min, adjusts blast regulator and makes and is
System circulation wind speed is 2.5m/s (2.65m3/ min), adjust flow controller make solution circular flow be respectively 0.4L/min,
0.8L/min, 1.2L/min, 1.6L/min, device stable operation 1 hour under every kind of concentration conditions.System water yield and salt rejection rate
Result with feed liquid changes in flow rate is as shown in Figure 3.As can be seen that entering one timing of temperature of humidifier in feed liquid, with feed liquid
Flow is continuously increased, and the solution evaporation capacity of unit time increases in humidifier, and more vapor are transported in dehumidifier
Cooling condensation, while the increase of feed liquid flow are carried out, also enhances the caloic exchange rate in humidifier, system water yield is therewith
Increase.And fresh water salt content be always maintained at it is lower, in 30ppm hereinafter, system salt rejection rate is stable 99.99% or more always.This
Direction is provided in application specifically in practice for device.
Claims (8)
1. small modules formula thermal method high-salt wastewater desalination system characterized by comprising humidifier (1), flow controller A
(7), water pump A (8), fluid level control valve (13), blower (12), blast regulator (11), drain valve A (9), concentrated solution slot (10),
Dehumidifier (17), flow controller B (15), water pump B (16), drain valve B (22), fresh-water tank (23)；
The humidifier (1) includes: evaporation spray thrower (2), shell A (3), filler A (4), sieve plate A (5), heater (6), solution
Entrance, solution loop exit, dense saline solution outlet, cool air inlet and Hot wet air heating outlet；The sieve plate A is fixed on humidifier
Interior lower part, and above liquid level of solution, the top sieve plate A is placed with filler A, for increasing the contact area of cold air and solution,
Strengthen humidification；The heater is located at below sieve plate to be contacted with solution, is used for heated solution；Solution loop exit position
In the lower part shell A, and it is connected with water pump A arrival end；The outlet end the water pump A is connected with evaporation spray thrower arrival end,
Connecting line is equipped with flow controller A；The evaporation spray thrower is located at humidifier top, enters humidification for spray solution
Device；The Hot wet air heating outlet is set at the top of shell A, is connected with the Hot wet air heating entrance of dehumidifier by pipeline；It is cold
Air intake is set to the lower part shell A, is located at below sieve plate A and passes through pipe above liquid level of solution, and with fan outlet end
Road is connected；The dense saline solution outlet is set to the bottom shell A, and it is connected with drain valve A arrival end；
The dehumidifier (17) includes: that cool water shower device (18), shell B (19), filler B (20), sieve plate B (21), fresh water follow
Ring outlet, water outlet, Hot wet air heating entrance and cold-air vent；The sieve plate B is fixed on lower part in dehumidifier, and in fresh water
Ullage, filler B are placed in above sieve plate B, and for increasing the contact area of Hot wet air heating and cooling water, reinforcing dehumidified
Journey；The fresh water loop exit is connected with water pump B arrival end, and the outlet end water pump B is connected with cool water shower device, connecting line
It is equipped with flow controller B；The Hot wet air heating entrance is set to the lower part shell B, is located at below sieve plate B and on fresh water liquid level
Side, and export with the Hot wet air heating of humidifier and be connected by pipeline；The cold-air vent is located at the top of shell B, and its with
Fans entrance end is connected；The water outlet is located at the bottom shell B, and it is connected with drain valve B arrival end；
The blower (12) is located on the outside of humidifier, for the cold air in dehumidifier to be delivered in humidifier, and itself and wind
Amount adjuster (11) is connected, for controlling entrance air quantity, regulating system fresh water production rate；
The concentrated solution slot (10) is located at below humidifier drain valve A, for holding dense saline solution；The fresh-water tank (23) is located at
Below dehumidifier drain valve B, for holding production fresh water.
2. small modules formula thermal method high-salt wastewater desalination system according to claim 1, which is characterized in that the system is also wrapped
Include solution preheater (14), the solution preheater is located on the outside of dehumidifier, the outlet end of the hydrothermal solution to be added of solution preheater with
Solution inlet is connected in humidifier, and connecting line is equipped with fluid level control valve (13), for controlling entrance amount of solution；Solution is pre-
Hot device fresh water arrival end is connected with the outlet end water pump B, and connecting line is equipped with flow controller B, and solution preheater fresh water goes out
Mouth end is connected with cool water shower device (18).
3. small modules formula thermal method high-salt wastewater desalination system according to claim 1 or 2, which is characterized in that shell is
The combination of one or more of stainless steel, polypropylene, polyethylene, polyvinyl chloride or glass-reinforced plastic material；Hull outside packet
Thermal insulation material is wrapped up in, have the function of keeping the temperature and prevents from being corroded by salting liquid.
4. small modules formula thermal method high-salt wastewater desalination system according to claim 1 or 2, which is characterized in that filler is
The combination of one or more of plastic filler, ceramic packing, glass reinforced plastic filler.
5. small modules formula thermal method high-salt wastewater desalination system according to claim 1 or 2, which is characterized in that filler
Shape is the group of one or more of Raschig ring, Pall ring, cascade ring, arc saddle type, square saddle type, ring intalox shape, spherical shape
It closes.
6. small modules formula thermal method high-salt wastewater desalination system according to claim 1 or 2, which is characterized in that connecting tube
Road is the combination of one or more of polypropylene, polyethylene or pvc material, is enclosed with thermal insulating material outside pipeline
Material；Sieve plate uses porous stainless steel plate or plastic plate.
7. small modules formula thermal method high-salt wastewater desalination system according to claim 2, which is characterized in that solution preheater
For plate heat exchanger, votator or shell-and-tube heat exchanger.
8. small modules formula thermal method high-salt wastewater desalination system according to claim 1 or 2, which is characterized in that further include
Automatic control system, the automatic control system include the solution concentration detection device and temperature monitor of humidifier setting, dehumidifier
Temperature monitor, liquidometer and the Water Test Kits of setting, the temperature monitor of solution preheater setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821159839.XU CN208776346U (en) | 2018-07-23 | 2018-07-23 | Small modules formula thermal method high-salt wastewater desalination system |
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| CN201821159839.XU CN208776346U (en) | 2018-07-23 | 2018-07-23 | Small modules formula thermal method high-salt wastewater desalination system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840384A (en) * | 2018-07-23 | 2018-11-20 | 大连理工大学 | Small modules formula thermal method high-salt wastewater desalination system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840384A (en) * | 2018-07-23 | 2018-11-20 | 大连理工大学 | Small modules formula thermal method high-salt wastewater desalination system and method |
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