CN108383185A - A kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle - Google Patents
A kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle Download PDFInfo
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- CN108383185A CN108383185A CN201810235078.XA CN201810235078A CN108383185A CN 108383185 A CN108383185 A CN 108383185A CN 201810235078 A CN201810235078 A CN 201810235078A CN 108383185 A CN108383185 A CN 108383185A
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- 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
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- 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
- C02F1/12—Spray evaporation
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- 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
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- 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
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- Treating Waste Gases (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle, 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, waste water convection current 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 saturated flue gas is first compressed through flue gas thermal compression unit, preheated device phase-change heat-exchange again, vapor therein condenses to form condensed water and except wet flue gas, should be except wet flue gas to be by the discharge of flue gas expansion cell transformation, concentrate collects the concentrate in cone bucket through waste water loop exit and the multiple concentration of pipeline until from leakage fluid dram discharge cone bucket after the concentration that achieves the goal.
Description
Technical field
The present invention relates to field of waste water treatment, are related to the concentration decrement of waste water, and in particular to a kind of heat smoke transformation discharge
The Waste water concentrating system 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, and it is dense to provide a kind of waste water of heat smoke transformation discharge water cycle
Compression system 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 waste water airdistillation concentration systems of heat smoke transformation discharge water cycle, including flue gas air admission unit, waste water
Feed liquor unit, distillation and concentration tower, waste water heating unit, flue gas thermal compression unit and expansion cell；
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；
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 includes the preheater being set in waste water input duct, is given up
The preheated device heating of water enters tower body；The preheater is also exported by the wet flue gas of flue gas thermal compression unit and distillation and concentration tower
It is connected to, is discharged by flue gas expansion cell transformation after the preheated device dehumidification by condensation of wet flue gas of compression；
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, the air thermal compression unit is mechanical compressor or vapor compressor；The air expansion is single
Member is throttle valve or air expander.
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 waste water convection current under being sprayed in distillation and concentration tower and from distillation and concentration tower upper end, in waste water
Partial moisture is taken away by flue gas, respectively obtains wet saturated flue gas and Waste water concentrating liquid；The wet saturated flue gas is first through flue gas hot compression
Cell compression, then preheated device phase-change heat-exchange, vapor therein are condensed to form condensed water and remove wet flue gas, should be passed through except wet flue gas
The discharge of flue gas expansion cell transformation is crossed, concentrate collects the concentrate in cone bucket, and repeatedly concentration is straight through waste water loop exit and pipeline
Cone bucket is discharged from leakage fluid dram after to the concentration that achieves the goal.
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 of the heat source from power plant's flue collector】, saturated moist air is with higher point
Pressure and higher water content, the concentration of be humidified by the dry air evaporation and salinity of realizing desulfurization wastewater pretreated water.Discharge
The high temperature saturated moist air of packed tower is discharged into desulfurizing tower after heat exchanger recycling heat preheating desulfurization wastewater and is mended as sulfur removal technology
Water, production water can reach distilled water water quality, is better than《GB/T19923-2005》Technical standard.Airdistillation concentrate is for fire coal
Power plant's dry ash slag damping drains into end solidified cell progress curing process, to realize Desulphurization for Coal-fired Power Plant wastewater zero discharge.
In above-mentioned technical proposal, power plant's flue collector heat smoke enters tower body from air inlet, with spinning updraft in tower
Desulfurization with atomization concentrates waste water convection current, and the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries moisture
Wet saturated flue gas is exported from wet flue gas and is discharged.Wind turbine can also be set before air inlet, and when flue gas itself is short of power, wind turbine is used
In providing power for flue gas.On the other hand preheater condenses wet flue gas on the one hand tentatively being preheated to desulfurization wastewater
Dehumidifying, the condensed water are recycled up to distilled water water quality, and the flue gas of dehumidifying is discharged by flue gas expansion cell transformation.In order to
Tower height is reduced, equipment investment and occupied space are reduced, needs to improve flue gas distillation and concentration efficiency, air inlet modulating mechanism and exhaust are adjusted
Mechanism processed can play this effect.Inlet gas distributed modulation device, exit gas distributed modulation device respectively include intermediate tune
Axis body processed and set on modulation axis body surrounding modulation blade.Exit gas distributed modulation device is located at inlet gas distributed modulation device
Vertical direction is all located on the center line of tower body；Entrance guiding plate is located under inlet gas distributed modulation device in vertical direction
It is square, face smoke inlet pipe road in horizontal direction；Deflector is exported in vertical direction to be located on exit gas distributed modulation device
It is square, face flue gas exhaust pipeline in horizontal direction；Flue gas blows to entrance guiding plate from admission line entrance and is guided by horizontal fluidised form
It for vertical fluidised form, then blows to inlet gas distributed modulation device rotation is modulated to by vertical ascent fluidised form and rise fluidised form, with atomization
Exit gas distributed modulation device, outlet deflector discharge are blowed to after thermally desulfurizing waste water mass transfer convection current successively.Exit gas distribution is adjusted
The modulation axis body of device processed and a pair of virtual bearing of the modulation axis body picture of inlet gas distributed modulation device, inlet gas distributed modulation
Device, exit gas distributed modulation device make air-flow be scattered in the cyclone flow patterns around atomized drop rotary motion jointly, realize efficient
Mass-and heat-transfer keeps air inlet/outlet more uniform, and space availability ratio greatly improves in tower, effectively reduces tower height degree.Inlet gas is distributed
Modulator modulation axis body centre be cylinder, both ends be semicircle sphere or cone, can be with enhanced modulation blade to gas
Rotation modulation intensity, the lower end semicircle sphere or cone of the modulation axis body of exit gas distributed modulation device have same make
With.Saturated moist air mechanical compressor or vapor compressor (TVC) compression for leaving destilling tower, are then removed in preheater
Wet, reusing throttle valve or air expander makes the air after dehumidifying expand, the air transformation discharge of expansion.This transformation discharge
The thermal efficiency can be significantly improved, capacity usage ratio is high.Concentrate collects cone bucket bottom and is additionally provided with waste water loop exit and pipeline, should
Waste water loop exit is connected to by pipeline with desulfurization wastewater input duct, and concentrate can repeatedly be recycled to concentration, until reaching mesh
Concentration after from leakage fluid dram be discharged 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 desulfurization wastewater airdistillation concentration systems of heat smoke transformation discharge water cycle as shown in Figure 1, including cigarette
Gas air admission unit, desulfurization wastewater feed liquor unit, distillation and concentration tower, desulfurization wastewater heating unit, flue gas thermal compression unit and expansion
Unit；
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；
Desulfurization wastewater feed liquor unit includes desulfurization wastewater input duct, one end of the pipeline from the top of distillation and concentration tower into
Enter tower body and downwardly open, the other end is desulfurization wastewater inlet；The desulfurization wastewater heating unit includes being set to desulfurization wastewater
Preheater in input duct, the preheated device heating of desulfurization wastewater enter tower body；The preheater also passes through flue gas hot compression list
Member and the wet flue gas outlet of distillation and concentration tower, by flue gas expansion cell after the preheated device dehumidification by condensation of wet flue gas of compression
Transformation is discharged；The air thermal compression unit is mechanical compressor or vapor compressor；The air expansion cell is throttling
Valve or air expander；
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 is that carrier gas enters from distillation and concentration tower air inlet, useless with the desulfurization under being sprayed from distillation and concentration tower upper end in distillation and concentration tower
Water convection current, partial moisture is taken away by flue gas in desulfurization wastewater, respectively obtains wet saturated flue gas and desulfurization wastewater concentrate；This is wet full
First compressed through flue gas thermal compression unit with flue gas, then preheated device phase-change heat-exchange, vapor therein condense to be formed condensed water and
, should be except wet flue gas to be by the discharge of flue gas expansion cell transformation except wet flue gas, the concentrate that concentrate is collected in cone bucket is followed through waste water
Ring exports and pipeline repeatedly concentrates until cone bucket is discharged from leakage fluid dram after the concentration that achieves the goal.
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
Desulfurization with atomization concentrates waste water convection current, and the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries moisture
Wet saturated flue gas is exported from wet flue gas and is discharged.Wind turbine can also be set before air inlet, and when flue gas itself is short of power, wind turbine is used
In providing power for flue gas.On the other hand preheater condenses wet flue gas on the one hand tentatively being preheated to desulfurization wastewater
Dehumidifying, the condensed water are recycled up to distilled water water quality, and the flue gas of dehumidifying is discharged by flue gas expansion cell transformation.In order to
Tower height is reduced, equipment investment and occupied space are reduced, needs to improve flue gas distillation and concentration efficiency, air inlet modulating mechanism and exhaust are adjusted
Mechanism processed can play this effect.Inlet gas distributed modulation device, exit gas distributed modulation device respectively include intermediate tune
Axis body processed and set on modulation axis body surrounding modulation blade.Exit gas distributed modulation device is located at inlet gas distributed modulation device
Vertical direction is all located on the center line of tower body；Entrance guiding plate is located under inlet gas distributed modulation device in vertical direction
It is square, face smoke inlet pipe road in horizontal direction；Deflector is exported in vertical direction to be located on exit gas distributed modulation device
It is square, face flue gas exhaust pipeline in horizontal direction；Flue gas blows to entrance guiding plate from admission line entrance and is guided by horizontal fluidised form
It for vertical fluidised form, then blows to inlet gas distributed modulation device rotation is modulated to by vertical ascent fluidised form and rise fluidised form, with atomization
Exit gas distributed modulation device, outlet deflector discharge are blowed to after thermally desulfurizing waste water mass transfer convection current successively.Exit gas distribution is adjusted
The modulation axis body of device processed and a pair of virtual bearing of the modulation axis body picture of inlet gas distributed modulation device, inlet gas distributed modulation
Device, exit gas distributed modulation device make air-flow be scattered in the cyclone flow patterns around atomized drop rotary motion jointly, realize efficient
Mass-and heat-transfer keeps air inlet/outlet more uniform, and space availability ratio greatly improves in tower, effectively reduces tower height degree.Inlet gas is distributed
Modulator modulation axis body centre be cylinder, both ends be semicircle sphere or cone, can be with enhanced modulation blade to gas
Rotation modulation intensity, the lower end semicircle sphere or cone of the modulation axis body of exit gas distributed modulation device have same make
With.Saturated moist air mechanical compressor or vapor compressor (TVC) compression for leaving destilling tower, are then removed in preheater
Wet, reusing throttle valve or air expander makes the air after dehumidifying expand, the air transformation discharge of expansion.This transformation discharge
The thermal efficiency can be significantly improved, capacity usage ratio is high.Concentrate collects cone bucket bottom and is additionally provided with waste water loop exit and pipeline, should
Waste water loop exit is connected to by pipeline with desulfurization wastewater input duct, and concentrate can repeatedly be recycled to concentration, until reaching mesh
Concentration after from leakage fluid dram be discharged 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 (8)
1. a kind of waste water airdistillation concentration systems of heat smoke transformation discharge water cycle, it is characterised in that：Including flue gas air inlet
Unit, waste water feed liquor unit, distillation and concentration tower, waste water heating unit, flue gas thermal compression unit and expansion cell；
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；
Waste water feed liquor unit includes waste water input duct, and one end of the pipeline enters tower body and downward from the top of distillation and concentration tower
Opening, the other end are waste water inlet；The waste water heating unit includes the preheater being set in waste water input duct, waste water warp
Preheater heating enters tower body；The preheater, which is also exported by the wet flue gas of flue gas thermal compression unit and distillation and concentration tower, to be connected
It is logical, it is discharged by flue gas expansion cell transformation after the preheated device dehumidification by condensation of wet flue gas of compression；
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：The air thermal compression unit is machinery
Compressor or vapor compressor；The air expansion cell is throttle valve or air expander.
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
Waste water convection current under the spray of end, useless water part moisture are taken away by flue gas, respectively obtain wet saturated flue gas and Waste water concentrating liquid；This is wet
Saturated flue gas is first compressed through flue gas thermal compression unit, then preheated device phase-change heat-exchange, vapor therein condense to form condensed water
With except wet flue gas, wet flue gas should be removed and discharged by flue gas expansion cell transformation, concentrate collects the concentrate in cone bucket through waste water
Repeatedly cone bucket is discharged from leakage fluid dram after the concentration that achieves the goal in concentration for loop exit and pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235078.XA CN108383185A (en) | 2018-03-21 | 2018-03-21 | A kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235078.XA CN108383185A (en) | 2018-03-21 | 2018-03-21 | A kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle |
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| Publication Number | Publication Date |
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| CN108383185A true CN108383185A (en) | 2018-08-10 |
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| CN201810235078.XA Withdrawn CN108383185A (en) | 2018-03-21 | 2018-03-21 | A kind of Waste water concentrating system and method for heat smoke transformation discharge water cycle |
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| Country | Link |
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2018
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