CN108408808A - A kind of heat smoke discharges the thermal wastewater concentration systems and method of water cycle naturally - Google Patents
A kind of heat smoke discharges the thermal wastewater concentration systems and method of water cycle naturally Download PDFInfo
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- CN108408808A CN108408808A CN201810235453.0A CN201810235453A CN108408808A CN 108408808 A CN108408808 A CN 108408808A CN 201810235453 A CN201810235453 A CN 201810235453A CN 108408808 A CN108408808 A CN 108408808A
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- waste water
- concentration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Abstract
The invention discloses thermal wastewater concentration systems and method that a kind of heat smoke discharges water cycle naturally, the heat smoke that the system and method are introduced using power plant's flue collector enters as carrier gas from distillation and concentration tower air inlet, the thermal wastewater convection current heated through heat exchanger under being sprayed in distillation and concentration tower and from distillation and concentration tower upper end, useless water part moisture is taken away by flue gas, respectively obtains wet saturated flue gas and Waste water concentrating liquid；The wet preheated device phase-change heat-exchange of saturated flue gas preheats waste water, vapor therein condenses to form condensed water and except wet flue gas, it should naturally be discharged except wet flue gas and condensed water, concentrate is collected the concentrate in cone bucket and repeatedly concentrated through waste water loop exit and pipeline until cone bucket is discharged from leakage fluid dram after the concentration that achieves the goal.
Description
Technical field
The present invention relates to field of waste water treatment, it is related to the concentration decrement of waste water, and in particular to a kind of heat smoke discharges naturally
The thermal wastewater concentration systems of water cycle and the waste water airdistillation method for concentration based on the system, the waste water can be useless for desulfurization
Water.
Background technology
Desulfurization wastewater Zero discharging system generally comprises pretreatment unit, concentration decrement unit, end solidified cell three parts.
Currently, the concentration Decrement Technique used both at home and abroad mainly has thermal concentration (such as：MVC/MED be concentrated by evaporation), film concentration
(such as：RO high pressures are reverse osmosis, the positive osmosis concentrations of FO).
MVC/MED thermal concentration technologies：Can by desulfurization wastewater pre-process production water be concentrated into the ppm of TDS≤200,000, be primarily present with
Lower problem：1) all to use price with waste water part of appliance since high salinity waste water has stronger corrosivity
High metal material, it is higher to cause equipment cost；2) since steam and waste water heating surface are of crucial importance, if heat exchange surface
Fouling is formed, then system performance will substantially reduce, therefore requirement of the technology to Wastewater Pretreatment is also very high；3) waste water salt
When degree is higher, the corresponding elevation of boiling point is also higher (such as sodium chloride solution under the conditions of saturated concentration the elevation of boiling point up to 13 DEG C), steams
It is not high to send out the efficiency of concentration technique at this time, operating cost is caused to increase.Therefore, generally existing investment, operation and maintenance cost are high, account for
The problems such as ground area is big, equipment scaling seriously corroded.
Film concentration technique：Desulfurization wastewater can be pre-processed production water difference by FO just infiltration and RO high pressure reverse osmosis concentration technologies
The ppm of the ppm of TDS≤180,000 and TDS≤100,000 are concentrated into, it is dense that investment and operation and maintenance cost, floor space are slightly below MVC/MED heat
Contracting technology, 1) membrane component dirt is stifled in order to prevent, higher to the pre-processing requirements of waste water, to increase pretreated investment and
O＆M expense；2) membrane component constantly deteriorates in operational process, needs periodic cleaning and replacement, increases operation expense；3)
It is limited by membrane technology, the cycles of concentration of waste water is relatively low, and concentrated water drainage is higher than MVC/MED thermal concentration technologies, increases end
Processing is (such as：Evaporative crystallization etc.) investment and O＆M expense；4) generally existing membranous system cleans the difficult, cleaning frequency and uses the longevity
The problems such as ordering short, anti-load impact energy force difference.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, provides the thermal wastewater that a kind of heat smoke discharges water cycle naturally
Concentration systems and waste water airdistillation method for concentration based on the system, which can be desulfurization wastewater.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of heat smoke discharges the thermal wastewater airdistillation concentration systems of water cycle naturally, including flue gas air admission unit, useless
Water feed liquor unit and distillation and concentration tower further include waste water heating unit；
The lower part of the distillation and concentration tower is equipped with air inlet, and bottom is equipped with concentrate and collects cone bucket, and top is equipped with wet flue gas
Outlet；
Flue gas air admission unit includes the flue being connected to power plant flue collector, flue gas from the air inlet of distillation and concentration tower into
Enter tower body；
The waste water feed liquor unit includes waste water input duct, and one end of the pipeline enters tower from the top of distillation and concentration tower
Body is simultaneously downwardly open, and the other end is waste water inlet；The waste water heating unit includes the preheating being set in waste water input duct
Device and heat exchanger, preheated device, heat exchanger heating enter tower body to waste water successively；The preheater also with the wet cigarette of distillation and concentration tower
Gas outlet is discharged naturally after the preheated device dehumidification by condensation of wet flue gas；The heat exchanger also connects with the heat source heated for waste water
It is logical；
The concentrate collects cone bucket equipped with drain valve and positive displacement pump for discharging concentrate, and cone bucket bottom is additionally provided with useless
Waste water loop exit is connected to by water loop exit and pipeline, the pipeline with waste water input duct.
Further, the airdistillation concentration systems further include be set to tower body air inlet at air inlet modulating mechanism and
Bleed modulation mechanism set on tower body humid air exit；
The air inlet modulating mechanism include inlet gas distributed modulation device and it is multiple be set to inlet gas distributed modulation device under
Side is for the entrance guiding plate by horizontal gas flow guiding for uprush；The bleed modulation mechanism includes that exit gas distribution is adjusted
Device processed and multiple outlet deflectors above exit gas distributed modulation device for guiding uprush as horizontal gas flow；
The inlet gas distributed modulation device, exit gas distributed modulation device respectively include intermediate modulation axis body and are set to
Modulate the modulation blade of axis body surrounding；The centre of the modulation axis body of inlet gas distributed modulation device is cylinder, and both ends are semicircle
Sphere or cone；The modulation axis body of exit gas distributed modulation device is the cylinder that a lower end is semicircle sphere or cone；
The modulation blade is set to the lower end of cylinder, including multiple be in tilted layout is used in cylinder circumferential direction by vertical ascent gas
Stream is modulated into the blade of spinning updraft；
The exit gas distributed modulation device is located at the vertical direction of inlet gas distributed modulation device.
Further, the entrance guiding plate or outlet deflector respectively by horizontal segment, vertical section and by horizontal segment and
Vertical section connects the segmental arc composition of transition.
Further, stirrup and outer stirrup are equidistantly circumferentially fixed in the modulation vanes and are set in gas distribution and adjust
The lower end of the cylinder of device processed.
Further, the modulation axis body is hollow structure.
Further, the waste water input duct is located in tower body and downwardly open one end is equipped with atomizer.
Further, heat source is hot water, steam or heat smoke.
A kind of waste water airdistillation method for concentration using above system：The heat smoke introduced using power plant's flue collector is carrier gas
Enter from distillation and concentration tower air inlet, the heat heated through heat exchanger under being sprayed in distillation and concentration tower and from distillation and concentration tower upper end
Waste water convection current, useless water part moisture are taken away by flue gas, respectively obtain wet saturated flue gas and Waste water concentrating liquid；The wet saturated flue gas
Preheated device phase-change heat-exchange preheats waste water, and vapor therein condenses to form condensed water and remove wet flue gas, should except wet flue gas and
Condensed water discharges naturally, and concentrate is collected the concentrate in cone bucket and repeatedly concentrated through waste water loop exit and pipeline until reaching mesh
Concentration after from leakage fluid dram be discharged cone bucket.
Further, the heat source of heat exchanger is heat smoke before deduster.
General principles (by taking desulfurization wastewater as an example)：Not using saturated moist air water content under different temperatures, pressure
With (such as：90 DEG C of saturated air water capacities are 1400g water/kg dry air；And 25 DEG C of saturated air water capacities are the dry skies of 20g water/kg
Gas), desulfurization wastewater pretreated water is made using filler tower and is modulated into cyclone flow patterns【Note：Enhance heat and mass】Dry air
It is in direct contact, with the raising of temperature【Note：Heat smoke and hydraulic fluid side desulfurization by heating of the heat source from power plant's flue collector is useless
Water】, saturated moist air have it is higher partial pressure and higher water content, pass through dry air humidification realize desulfurization wastewater pretreatment
The evaporation of water and the concentration of salinity.The high temperature saturated moist air of packed tower is discharged after heat exchanger recycling heat preheating desulfurization wastewater
Desulfurizing tower is discharged into as sulfur removal technology moisturizing, production water can reach distilled water water quality, be better than《GB/T19923-2005》Technical bid
It is accurate.Airdistillation concentrate is for coal-burning power plant's dry ash slag damping or drains into end solidified cell progress curing process, realizes combustion
Coal-fired plant's desulfurization wastewater zero-emission.
In above-mentioned technical proposal, power plant's flue collector heat smoke enters tower body from air inlet, with spinning updraft in tower
Waste water convection current is concentrated with the thermally desulfurizing of atomization, the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries moisture
Wet saturated flue gas from wet flue gas export be discharged.Wind turbine can also be set before air inlet, when flue gas itself is short of power, wind turbine
For providing power for flue gas.On the one hand preheater tentatively preheats desulfurization wastewater for collecting the heat of wet flue gas, another party
Dehumidification by condensation is carried out in face of wet flue gas, which recycles up to distilled water water quality, and the flue gas of dehumidifying discharges naturally.It changes
For hot device for being heated to required temperature to desulfurization wastewater, the heat source that heat is provided for heat exchanger can be hot water, steam or power plant
Heat smoke.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve flue gas distillation and concentration efficiency, into controlled atmosphere
Mechanism processed and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas distributed modulation device point
Modulation axis body that Bao Kuo be intermediate and modulation blade set on modulation axis body surrounding.Exit gas distributed modulation device is located at into implication
The vertical direction of body distributed modulation device, is all located on the center line of tower body；Entrance guiding plate is located in vertical direction into implication
Below body distributed modulation device, face smoke inlet pipe road in horizontal direction；Outlet deflector is located in vertical direction works off one's feeling vent one's spleen
Above body distributed modulation device, face flue gas exhaust pipeline in horizontal direction；Flue gas enters from admission line blows to entrance guiding plate
It is vertical fluidised form by the guiding of horizontal fluidised form, then blows to inlet gas distributed modulation device and rotation rising is modulated to by vertical ascent fluidised form
Exit gas distributed modulation device, outlet deflector discharge are blowed to after fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization successively.Go out
The modulation axis body of gas distributed modulation device and a pair of virtual bearing of the modulation axis body picture of inlet gas distributed modulation device, enter implication
Body distributed modulation device, exit gas distributed modulation device make air-flow be scattered in the tornado flow around atomized drop rotary motion jointly
State realizes efficient mass transfer heat transfer, keeps air inlet/outlet more uniform, space availability ratio greatly improves in tower, effectively reduces tower height degree.Enter
Gas distributed modulation device modulation axis body centre be cylinder, both ends be semicircle sphere or cone, can be with enhanced modulation
Blade is to the rotation modulation intensity of gas, the lower end semicircle sphere or cone tool of the modulation axis body of exit gas distributed modulation device
There is same effect.Concentrate collects cone bucket bottom and is additionally provided with waste water loop exit and pipeline, and the pipeline is by waste water loop exit
It is connected to desulfurization wastewater input duct, concentrate can repeatedly be recycled to concentration, until being arranged from leakage fluid dram after the concentration that achieves the goal
Go out cone bucket.
System and method provided by the invention can effectively concentrate desulfurization wastewater, have the following advantages that simultaneously：
1, concentrated water drainage is much smaller than other concentration Decrement Techniques, mitigates end-o f-pipe -control (such as significantly：Evaporative crystallization etc.)
Investment and O＆M expense【Compared with MVC/MED thermal concentration technologies, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and operation and maintenance expenses
With 25% or more can be reduced；Compared with RO high pressure reverse osmosis concentration technologies, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and fortune
Dimension expense can reduce by 50% or more；Compared with the positive osmosis concentration technologies of FO, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and fortune
Dimension expense can reduce by 32% or more】.
2, system operating temperature is 50-95 DEG C or so, can efficiently use the various low-temperature waste heats of power plant as heat source.
3, major process unit uses plastic materials or ordinary carbon steel plastic lining class material manufacture, and uses and directly connect
Heat and mass is touched, there is higher heat and mass efficiency and excellent anti-corrosion anti-scale performance.
4, relatively low to pretreatment water quality requirement, desulfurization wastewater pretreatment investment and O＆M expense will not be increased；
5, equipment investment is few, floor space is small, operation and maintenance are simple, and investment and O＆M expense are reduced much smaller than other concentrations
Technology【60% or more investment can be reduced；50% or more operating cost can be reduced】, system run all right is reliable, and treatment effect is bright
Aobvious, production water is better than up to distilled water water quality《GB/T19923-2005 urban sewage reutilizations-industry water standard》(technique
Water) technical standard, fully recovering is in sulfur removal technology water.Concentrate after concentration decrement, can be used for lime-ash damping or is cured
Processing.
Description of the drawings
Fig. 1 is the structural schematic diagram of desulfurization wastewater airdistillation concentration systems；
Fig. 2 is the structural schematic diagram of inlet gas distributed modulation device；
Fig. 3 is the structural schematic diagram of the modulation blade of inlet gas distributed modulation device；
Fig. 4 is the structural schematic diagram of inlet gas distributed modulation device and entrance guiding plate；
Fig. 5 is exit gas distributed modulation device and exports the structural schematic diagram of deflector；
Wherein, 21- entrance guidings plate, 22- export deflector, and 23- modulates axis body, 24- blades, stirrup in 25-, outside 26-
Stirrup.
Specific implementation mode
The essentiality content of the present invention is specifically introduced with reference to embodiment, but the protection model of the present invention is not limited with this
It encloses.
The embodiment is by taking desulfurization wastewater as an example.
A kind of heat smoke as shown in Figure 1 discharges the thermally desulfurizing waste water airdistillation concentration systems of water cycle naturally, including
Flue gas air admission unit, desulfurization wastewater feed liquor unit and distillation and concentration tower further include desulfurization wastewater heating unit；
The lower part of the distillation and concentration tower is equipped with air inlet, and bottom is equipped with concentrate and collects cone bucket, and top is equipped with wet flue gas
Outlet；
Flue gas air admission unit includes the flue being connected to power plant flue collector, flue gas from the air inlet of distillation and concentration tower into
Enter tower body；
The desulfurization wastewater feed liquor unit includes desulfurization wastewater input duct, and one end of the pipeline is from the upper of distillation and concentration tower
Portion enters tower body and downwardly open (be equipped with atomizer), and the other end is desulfurization wastewater inlet；The desulfurization wastewater heating unit
Include preheater and heat exchanger in desulfurization wastewater input duct, desulfurization wastewater successively preheated device, heat exchanger heat into
Enter tower body；The preheater is natural after the preheated device dehumidification by condensation of wet flue gas also with the wet flue gas outlet of distillation and concentration tower
Discharge；The heat exchanger is also connected to the heat source (hot water, steam or heat smoke) heated for desulfurization wastewater；
The concentrate collects cone bucket equipped with drain valve and positive displacement pump for discharging concentrate, and cone bucket bottom is additionally provided with useless
Waste water loop exit is connected to by water loop exit and pipeline, the pipeline with desulfurization wastewater input duct.
The airdistillation concentration systems further include be set to tower body air inlet at air inlet modulating mechanism and set on tower body it is wet
Bleed modulation mechanism (as shown in Figure 2-5) at air outlet slit；
The air inlet modulating mechanism include inlet gas distributed modulation device and it is multiple be set to inlet gas distributed modulation device under
Side is for the entrance guiding plate by horizontal gas flow guiding for uprush；The bleed modulation mechanism includes that exit gas distribution is adjusted
Device processed and multiple outlet deflectors above exit gas distributed modulation device for guiding uprush as horizontal gas flow；
Entrance guiding plate or outlet deflector are respectively by horizontal segment, vertical section and the segmental arc that horizontal segment is connected to transition with vertical section
Composition；
The inlet gas distributed modulation device, exit gas distributed modulation device respectively include intermediate modulation axis body and are set to
Modulate the modulation blade of axis body surrounding；The centre of the modulation axis body of inlet gas distributed modulation device is cylinder, and both ends are semicircle
Sphere or cone；The modulation axis body of exit gas distributed modulation device is the cylinder that a lower end is semicircle sphere or cone；
The modulation blade is set to the lower end of cylinder, including multiple be in tilted layout is used in cylinder circumferential direction by vertical ascent gas
Stream is modulated into the blade of spinning updraft；Specifically, modulate that stirrup and outer stirrup are equidistantly circumferentially fixed in vanes and cover
It is located at the lower end of the cylinder of gas distributed modulation device.The modulation axis body is hollow structure.
The exit gas distributed modulation device is located at the vertical direction of inlet gas distributed modulation device.
A kind of desulfurization wastewater airdistillation method for concentration using above system, including：The heat introduced with power plant's flue collector
Flue gas be carrier gas from distillation and concentration tower air inlet enter, in distillation and concentration tower with from distillation and concentration tower upper end spray under through heat exchange
The thermally desulfurizing waste water convection current of device heating, partial moisture is taken away by flue gas in desulfurization wastewater, respectively obtains wet saturated flue gas and desulfurization
Waste water concentrating liquid；The wet preheated device phase-change heat-exchange of saturated flue gas to desulfurization wastewater preheat, vapor therein condense to be formed it is cold
Condensate and wet flue gas is removed, should naturally be discharged except wet flue gas and condensed water, the concentrate in concentrate collection cone bucket is recycled through waste water
Repeatedly cone bucket is discharged from leakage fluid dram after the concentration that achieves the goal in concentration for outlet and pipeline.
Specifically, the heat source of heat exchanger is heat smoke before deduster.
In addition, different operating section answers design sample mouth, observation panel, access hole, the convenient sampling of observation at any time, observation, opening
Maintenance checks internal part；Different operating section should configure pressure gauge, thermometer.Tower body sectional making, flanged joint.Different portions
The material of part should select material according to the ingredient and concentration of contact medium.Resistant material can according to the ingredient of contact medium and
Concentration selects the rubber or plastics of carbon steel liner heatproof >=100 DEG C【Such as：Polytetrafluoroethylene (PTFE), fiberglass, PP polypropylene, glass squama
Piece etc.】Or metal【Such as：Stainless steel, titanium alloy, C276,1.4529 etc.】Or the plastics of heatproof >=100 DEG C【Such as：Polytetrafluoroethyl-ne
Alkene, fiberglass, PP polypropylene etc.】.
In above-mentioned technical proposal, power plant's flue collector heat smoke enters tower body from air inlet, with spinning updraft in tower
Waste water convection current is concentrated with the thermally desulfurizing of atomization, the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries moisture
Wet saturated flue gas from wet flue gas export be discharged.Wind turbine can also be set before air inlet, when flue gas itself is short of power, wind turbine
For providing power for flue gas.On the one hand preheater tentatively preheats desulfurization wastewater for collecting the heat of wet flue gas, another party
Dehumidification by condensation is carried out in face of wet flue gas, which recycles up to distilled water water quality, and the flue gas of dehumidifying discharges naturally.It changes
For hot device for being heated to required temperature to desulfurization wastewater, the heat source that heat is provided for heat exchanger can be hot water, steam or power plant
Heat smoke.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve flue gas distillation and concentration efficiency, into controlled atmosphere
Mechanism processed and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas distributed modulation device point
Modulation axis body that Bao Kuo be intermediate and modulation blade set on modulation axis body surrounding.Exit gas distributed modulation device is located at into implication
The vertical direction of body distributed modulation device, is all located on the center line of tower body；Entrance guiding plate is located in vertical direction into implication
Below body distributed modulation device, face smoke inlet pipe road in horizontal direction；Outlet deflector is located in vertical direction works off one's feeling vent one's spleen
Above body distributed modulation device, face flue gas exhaust pipeline in horizontal direction；Flue gas enters from admission line blows to entrance guiding plate
It is vertical fluidised form by the guiding of horizontal fluidised form, then blows to inlet gas distributed modulation device and rotation rising is modulated to by vertical ascent fluidised form
Exit gas distributed modulation device, outlet deflector discharge are blowed to after fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization successively.Go out
The modulation axis body of gas distributed modulation device and a pair of virtual bearing of the modulation axis body picture of inlet gas distributed modulation device, enter implication
Body distributed modulation device, exit gas distributed modulation device make air-flow be scattered in the tornado flow around atomized drop rotary motion jointly
State realizes efficient mass transfer heat transfer, keeps air inlet/outlet more uniform, space availability ratio greatly improves in tower, effectively reduces tower height degree.Enter
Gas distributed modulation device modulation axis body centre be cylinder, both ends be semicircle sphere or cone, can be with enhanced modulation
Blade is to the rotation modulation intensity of gas, the lower end semicircle sphere or cone tool of the modulation axis body of exit gas distributed modulation device
There is same effect.Concentrate collects cone bucket bottom and is additionally provided with waste water loop exit and pipeline, and the pipeline is by waste water loop exit
It is connected to desulfurization wastewater input duct, concentrate can repeatedly be recycled to concentration, until being arranged from leakage fluid dram after the concentration that achieves the goal
Go out cone bucket.
System and method provided by the invention can effectively concentrate desulfurization wastewater, have the following advantages that simultaneously：
1, concentrated water drainage is much smaller than other concentration Decrement Techniques, mitigates end-o f-pipe -control (such as significantly：Evaporative crystallization etc.)
Investment and O＆M expense【Compared with MVC/MED thermal concentration technologies, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and operation and maintenance expenses
With 25% or more can be reduced；Compared with RO high pressure reverse osmosis concentration technologies, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and fortune
Dimension expense can reduce by 50% or more；Compared with the positive osmosis concentration technologies of FO, end-o f-pipe -control is (such as：Evaporative crystallization etc.) investment and fortune
Dimension expense can reduce by 32% or more】.
2, system operating temperature is 50-95 DEG C or so, can efficiently use the various low-temperature waste heats of power plant as heat source.
3, major process unit uses plastic materials or ordinary carbon steel plastic lining class material manufacture, and uses and directly connect
Heat and mass is touched, there is higher heat and mass efficiency and excellent anti-corrosion anti-scale performance.
4, relatively low to pretreatment water quality requirement, desulfurization wastewater pretreatment investment and O＆M expense will not be increased；
5, equipment investment is few, floor space is small, operation and maintenance are simple, and investment and O＆M expense are reduced much smaller than other concentrations
Technology【60% or more investment can be reduced；50% or more operating cost can be reduced】, system run all right is reliable, and treatment effect is bright
Aobvious, production water is better than up to distilled water water quality《GB/T19923-2005 urban sewage reutilizations-industry water standard》(technique
Water) technical standard, fully recovering is in sulfur removal technology water.Concentrate after concentration decrement, can be used for lime-ash damping or is cured
Processing.
The effect of above-described embodiment is specifically to introduce the essentiality content of the present invention, but those skilled in the art should know
Protection scope of the present invention should not be confined to the specific embodiment by road.
Claims (9)
1. a kind of heat smoke discharges the thermal wastewater airdistillation concentration systems of water cycle naturally, it is characterised in that：Including flue gas into
Gas unit, waste water feed liquor unit and distillation and concentration tower further include waste water heating unit；
The lower part of the distillation and concentration tower is equipped with air inlet, and bottom is equipped with concentrate and collects cone bucket, and top is exported equipped with wet flue gas；
Flue gas air admission unit includes the flue being connected to power plant flue collector, and flue gas enters tower from the air inlet of distillation and concentration tower
Body；
The waste water feed liquor unit includes waste water input duct, and one end of the pipeline enters tower body simultaneously from the top of distillation and concentration tower
Downwardly open, the other end is waste water inlet；The waste water heating unit include be set to waste water input duct on preheater and
Heat exchanger, preheated device, heat exchanger heating enter tower body to waste water successively；Wet flue gas of the preheater also with distillation and concentration tower goes out
Mouth is connected to, and is discharged naturally after the preheated device dehumidification by condensation of wet flue gas；The heat exchanger is also connected to for the heat source that waste water heats；
The concentrate collects cone bucket equipped with drain valve and positive displacement pump for discharging concentrate, and cone bucket bottom is additionally provided with waste water and follows
Ring exports and waste water loop exit is connected to by pipeline, the pipeline with waste water input duct.
2. airdistillation concentration systems according to claim 1, it is characterised in that：Further include being set at tower body air inlet
Air inlet modulating mechanism and bleed modulation mechanism set on tower body humid air exit；
The air inlet modulating mechanism includes that inlet gas distributed modulation device and multiple be set to below inlet gas distributed modulation device are used
In the entrance guiding plate by horizontal gas flow guiding for uprush；The bleed modulation mechanism includes exit gas distributed modulation device
With multiple outlet deflectors above exit gas distributed modulation device for guiding uprush as horizontal gas flow；
The inlet gas distributed modulation device, exit gas distributed modulation device respectively include intermediate modulation axis body and set on modulation
The modulation blade of axis body surrounding；The centre of the modulation axis body of inlet gas distributed modulation device is cylinder, and both ends are semicircle sphere
Or cone；The modulation axis body of exit gas distributed modulation device is the cylinder that a lower end is semicircle sphere or cone；It is described
The lower end that blade is set to cylinder is modulated, including multiple be in tilted layout is used in cylinder circumferential direction by vertical ascent air-flow tune
The blade of spinning updraft is made；
The exit gas distributed modulation device is located at the vertical direction of inlet gas distributed modulation device.
3. airdistillation concentration systems according to claim 2, it is characterised in that：The entrance guiding plate or outlet water conservancy diversion
Horizontal segment is connected by horizontal segment, vertical section and with vertical section the segmental arc of transition and formed by plate respectively.
4. airdistillation concentration systems according to claim 2, it is characterised in that：Stirrup and outer in the modulation vanes
Stirrup is equidistantly circumferentially fixed and the lower end of the cylinder that is set in gas distributed modulation device.
5. airdistillation concentration systems according to claim 2, it is characterised in that：The modulation axis body is hollow structure.
6. airdistillation concentration systems according to claim 1, it is characterised in that：The waste water input duct is located at tower body
Interior and downwardly open one end is equipped with atomizer.
7. airdistillation concentration systems according to claim 1, it is characterised in that：Heat source is hot water, steam or heat smoke.
8. a kind of waste water airdistillation method for concentration using any systems of claim 1-7, it is characterised in that：With power plant
The heat smoke that flue collector introduces is that carrier gas enters from distillation and concentration tower air inlet, in distillation and concentration tower and from distillation and concentration tower
The thermal wastewater convection current heated through heat exchanger under the spray of end, useless water part moisture are taken away by flue gas, respectively obtain wet saturated flue gas
With Waste water concentrating liquid；The wet preheated device phase-change heat-exchange of saturated flue gas preheats waste water, and vapor therein condenses to form condensation
Water and wet flue gas is removed, should naturally be discharged except wet flue gas and condensed water, the concentrate in concentrate collection cone bucket is recycled through waste water
Repeatedly cone bucket is discharged from leakage fluid dram after the concentration that achieves the goal in concentration for mouth and pipeline.
9. according to the method described in claim 8, it is characterized in that：The heat source of heat exchanger is heat smoke before deduster.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502671A (en) * | 2018-11-08 | 2019-03-22 | 上海发电设备成套设计研究院有限责任公司 | A kind of Waste water concentrating decrement treatment system |
| CN109824190A (en) * | 2018-11-30 | 2019-05-31 | 南京常荣声学股份有限公司 | A kind of device realized desulfurization wastewater zero-emission and couple Collaborative Control white plume |
| CN114702094A (en) * | 2021-12-22 | 2022-07-05 | 国电电力邯郸东郊热电有限责任公司 | Comprehensive treatment system for tail end wastewater and tail end solid wastewater of coal-fired power plant |
-
2018
- 2018-03-21 CN CN201810235453.0A patent/CN108408808A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502671A (en) * | 2018-11-08 | 2019-03-22 | 上海发电设备成套设计研究院有限责任公司 | A kind of Waste water concentrating decrement treatment system |
| CN109824190A (en) * | 2018-11-30 | 2019-05-31 | 南京常荣声学股份有限公司 | A kind of device realized desulfurization wastewater zero-emission and couple Collaborative Control white plume |
| CN114702094A (en) * | 2021-12-22 | 2022-07-05 | 国电电力邯郸东郊热电有限责任公司 | Comprehensive treatment system for tail end wastewater and tail end solid wastewater of coal-fired power plant |
| CN114702094B (en) * | 2021-12-22 | 2023-11-28 | 国电电力邯郸东郊热电有限责任公司 | Comprehensive treatment system for tail end wastewater and tail end wastewater of coal-fired power plant |
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Application publication date: 20180817 |