CN209113524U - A kind of thermal wastewater concentration systems that air pressure-cycling water is in line - Google Patents
A kind of thermal wastewater concentration systems that air pressure-cycling water is in line Download PDFInfo
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- CN209113524U CN209113524U CN201820386016.4U CN201820386016U CN209113524U CN 209113524 U CN209113524 U CN 209113524U CN 201820386016 U CN201820386016 U CN 201820386016U CN 209113524 U CN209113524 U CN 209113524U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000004821 distillation Methods 0.000 claims abstract description 22
- 239000012141 concentrate Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 81
- 238000006477 desulfuration reaction Methods 0.000 claims description 35
- 230000023556 desulfurization Effects 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000003517 fume Substances 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
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- 239000004743 Polypropylene Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000001223 reverse osmosis Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
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- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of thermal wastewater concentration systems that air pressure-cycling water is in line, the system and method enter using air as carrier gas from the air inlet of distillation and concentration tower, the thermal wastewater convection current heated in distillation and concentration tower and from the preheated device preheating under the spray of distillation and concentration tower upper end, heat exchanger, useless water part moisture is taken away by air, respectively obtains wet saturated air and Waste water concentrating liquid；The wet saturated air is first compressed through air thermal compression unit, preheated device phase-change heat-exchange again, vapor therein condenses to form condensed water and dehumidified air, the dehumidified air enters air inlet unit pressure-cycling by air expansion cell, and the concentrate that condensed water and concentrate are collected in cone bucket discharges naturally.
Description
Technical field
The utility model relates to field of waste water treatment, it is related to the concentration decrement of waste water, and in particular to a kind of air transformation is followed
The in line thermal wastewater concentration systems of ring water and waste water airdistillation method for concentration based on the system, which can be desulfurization
Waste water.
Background technique
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 is concentrated by evaporation), film concentration
(such as: RO high pressure is reverse osmosis, the positive osmosis concentration of FO).
MVC/MED thermal concentration technology: can by desulfurization wastewater pre-process produce 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 spending 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: FO just permeating with RO high pressure reverse osmosis concentration technology, can by desulfurization wastewater pre-process produce water difference
It is concentrated into the ppm of the ppm of TDS≤180,000 and TDS≤100,000, it is dense that investment and operation and maintenance cost, occupied area 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, thus 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 lower, and concentrated water drainage is higher than MVC/MED thermal concentration technology, increases end
Handle the investment and O&M expense of (such as: evaporative crystallization)；4) generally existing membranous system cleans the difficult, cleaning frequency and uses the longevity
Order the problems such as short, anti-load impact ability is poor.
Summary of the invention
It is useless that the utility model aim is to overcome the deficiencies of the prior art and provide a kind of heat that air pressure-cycling water is in line
Water concentration systems and waste water airdistillation method for concentration based on the system, which can be desulfurization wastewater.
The above-mentioned purpose of the utility model is achieved by following technical solution:
A kind of thermal wastewater airdistillation concentration systems that air pressure-cycling water is in line, including air inlet unit, waste water
Feed liquor unit, distillation and concentration tower, waste water heating unit, air 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 humid air
Outlet；
The air inlet unit includes air cleaner and blower, and air successively passes through air cleaner, blower from steaming
The air inlet for evaporating concentration tower enters 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 in waste water input duct
Device and heat exchanger, successively preheated device and heat exchanger heating enter tower body to waste water；
The preheater also passes through the humid air outlet of air thermal compression unit Yu distillation and concentration tower, the wet sky of compression
Enter air inlet unit pressure-cycling by air expansion cell after the preheated device dehumidification by condensation of gas；The heat exchanger also with mention
For the heat source connection heated for waste water；
The concentrate collects cone bucket and is equipped with drain valve and positive displacement pump, and concentrate is through drain valve and positive displacement pump direct emission.
Further, the airdistillation concentration systems further include air inlet modulating mechanism at the tower body air inlet 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
Horizontal gas flow for being guided the entrance guiding plate for uprush by side；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 cylindrical body, and both ends are semicircle
Sphere or cone；The modulation axis body of exit gas distributed modulation device is the cylindrical body that a lower end is semicircle sphere or cone；
The modulation blade is set to the lower end of cylindrical body, including multiple be in tilted layout is used in cylindrical body 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 equidistant circumferentially fixed in the modulation vanes and are set in gas distribution and adjust
The lower end of the cylindrical body 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 hot fume.
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 air inlet using air as carrier gas from distillation and concentration tower
Mouth enters, the thermal wastewater in distillation and concentration tower and from the preheating of preheated device, heat exchanger heating under the spray of distillation and concentration tower upper end
Convection current, useless water part moisture are taken away by air, respectively obtain wet saturated air and Waste water concentrating liquid；The wet saturated air first passes through
The compression of air thermal compression unit, then preheated device phase-change heat-exchange, vapor therein condense to form condensed water and dehumidified air, should
Dehumidified air enters air inlet unit pressure-cycling by air expansion cell, and condensed water and concentrate are collected dense in cone bucket
Contracting liquid discharges naturally.
Further, the heat source of heat exchanger is hot fume before deduster.
The utility model basic principle (by taking desulfurization wastewater as an example): aqueous using saturated moist air under different temperatures, pressure
Amount is different, and (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 20g water/kg
Dry air), desulfurization wastewater pretreated water is made using filler tower and is modulated into cyclone flow patterns [note: enhancing heat and mass] drying
Air directly contacts, as the temperature rises [note: heat source from hydraulic fluid side (through 120-150 DEG C of hot fume before plant dust catcher or
Hot water or steam heating after≤100 DEG C of desulfurization wastewater pretreated waters)], saturated moist air it is with higher partial pressure and it is higher
Water content is humidified by dry air and realizes the evaporation of desulfurization wastewater pretreated water and the concentration of salinity.The height of packed tower is discharged
Warm saturated moist air is discharged into desulfurizing tower after heat exchanger recycling heat preheating desulfurization wastewater as sulfur removal technology moisturizing, and production water can be with
Reach distilled water water quality, is better than the technical standard of " GB/T19923-2005 ".Airdistillation concentrate is used for coal-burning 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, normal temperature air enters tower body from air inlet, with spinning updraft and atomization in tower
Waste water convection current is concentrated in thermally desulfurizing, and the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries the wet saturation of moisture
Air is exported from humid air and is discharged.Air cleaner is used for air filtration, and blower is used to provide power for air.Preheater one
The heat that aspect is used to collect humid air tentatively preheats desulfurization wastewater, on the other hand carries out dehumidification by condensation to humid air, this is cold
Condensate is recycled up to distilled water water quality, and the air of dehumidifying continues with from air inlet, avoids discharging exhaust gas into atmosphere.
For heat exchanger for being further heated to required temperature to the desulfurization wastewater of preheating, the heat source for providing heat for preheater can be heat
Water, steam or the hot fume of power plant.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve airdistillation dense
Contracting efficiency, air inlet modulating mechanism and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas
Distributed modulation device respectively includes intermediate modulation axis body and set on the modulation blade for modulating axis body surrounding.Exit gas distributed modulation
Device is located at the vertical direction of inlet gas distributed modulation device, is all located on the center line of tower body；Entrance guiding plate is in vertical direction
It is upper to be located at below inlet gas distributed modulation device, face air intake pipe in horizontal direction；Deflector is exported in vertical direction
It is upper to be located above exit gas distributed modulation device, face air exhaust pipeline in horizontal direction；Air enters from admission line to be blown
Being guided to entrance guiding plate by horizontal fluidised form is vertical fluidised form, then blows to inlet gas distributed modulation device by vertical ascent fluidised form tune
It is made as successively blowing to exit gas distributed modulation device, outlet after rotation rises fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization
Deflector discharge.The modulation axis body of exit gas distributed modulation device and the modulation axis body picture of inlet gas distributed modulation device are a pair of empty
Quasi- bearing, inlet gas distributed modulation device, exit gas distributed modulation device are jointly scattered in air-flow to rotate around atomized drop
The cyclone flow patterns of movement realize efficient mass transfer heat transfer, keep air inlet/outlet more uniform, space utilization rate greatly improves in tower, effectively
Reduce tower height degree.Inlet gas distributed modulation device modulation axis body centre be cylindrical body, both ends be semicircle sphere or cone,
Modulation blade can be enhanced to the rotation modulation intensity of gas, the lower end semi-round ball of the modulation axis body of exit gas distributed modulation device
Body or cone have same effect.Pressure difference in circulation is kept using compression and expansion device.In the circulating cycle, it leaves
The saturated moist air mechanical compressor or vapor compressor (TVC) of destilling tower compress, and then dehumidify in preheater, then make
Make the air expansion after dehumidifying with throttle valve or air expander, the air of expansion enters air inlet unit and is sent to distillation
Therefore tower, air are run in the closed circuit.This pressure-cycling can significantly improve the thermal efficiency, and capacity usage ratio is high.
System and method provided by the utility model can effectively be concentrated desulfurization wastewater, while have following excellent
Point:
1, concentrated water drainage is much smaller than other concentration Decrement Techniques, significantly mitigation end-o f-pipe -control (such as evaporative crystallization)
Investment and O&M expense [compared with MVC/MED thermal concentration technology, the investment of end-o f-pipe -control (such as: evaporative crystallization) and operation and maintenance expenses
With 25% or more can be reduced；Compared with RO high pressure reverse osmosis concentration technology, the investment and fortune of end-o f-pipe -control (such as: evaporative crystallization)
Dimension expense can reduce by 50% or more；Compared with the positive osmosis concentration technology of FO, the investment and fortune of end-o f-pipe -control (such as: evaporative crystallization)
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 is manufactured using plastic materials or ordinary carbon steel plastic lining class material, and is used and directly connect
Touch heat and mass, heat and mass efficiency with higher and excellent anti-corrosion anti-scale performance.
4, lower to pretreatment water quality requirement, it not will increase desulfurization wastewater pretreatment investment and O&M expense；
5, equipment investment is few, occupied area is small, operation and maintenance are simple, and investment and O&M expense are reduced much smaller than other concentrations
Technology [can reduce by 60% or more investment；50% or more operating cost can be reduced], system run all right is reliable, and treatment effect is bright
It is aobvious, water is produced up to distilled water water quality, is better than " GB/T19923-2005 urban sewage reutilization-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 solidified
Processing.
Detailed description of the invention
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 the structural schematic diagram for exporting deflector；
Wherein, 21- entrance guiding plate, 22- export deflector, and 23- modulates axis body, 24- blade, stirrup in 25-, outside 26-
Stirrup.
Specific embodiment
The essentiality content of the utility model is specifically introduced below with reference to embodiment, but the utility model is not limited with this
Protection scope.
The embodiment is by taking desulfurization wastewater as an example.
A kind of in line thermally desulfurizing waste water airdistillation concentration systems of air pressure-cycling water as shown in Figure 1, including sky
Gas air admission unit, desulfurization wastewater feed liquor unit, distillation and concentration tower, desulfurization wastewater heating unit, air thermal compression unit and expansion
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 humid air
Outlet；
The air inlet unit includes air cleaner and blower, and air successively passes through air cleaner, blower from steaming
The air inlet for evaporating concentration tower enters 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
Including be set to desulfurization wastewater input duct on preheater and heat exchanger, desulfurization wastewater successively preheated device and heat exchanger heat into
Enter tower body；
The preheater also passes through the humid air outlet of air thermal compression unit Yu distillation and concentration tower, the wet sky of compression
Enter air inlet unit pressure-cycling by air expansion cell after the preheated device dehumidification by condensation of gas；The heat exchanger also with mention
For heat source (hot water, the steam or hot fume) connection heated for desulfurization wastewater；The air thermal compression unit is mechanical compressor
Or vapor compressor；The air expansion cell is throttle valve or air expander；
The concentrate collects cone bucket and is equipped with drain valve and positive displacement pump, and concentrate is through drain valve and positive displacement pump direct emission.
The airdistillation concentration systems further include air inlet modulating mechanism at the tower body air inlet and to be set to tower body 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
Horizontal gas flow for being guided the entrance guiding plate for uprush by side；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 cylindrical body, and both ends are semicircle
Sphere or cone；The modulation axis body of exit gas distributed modulation device is the cylindrical body that a lower end is semicircle sphere or cone；
The modulation blade is set to the lower end of cylindrical body, including multiple be in tilted layout is used in cylindrical body circumferential direction by vertical ascent gas
Stream is modulated into the blade of spinning updraft；Specifically, modulate that stirrup and outer stirrup are equidistant circumferentially fixed in vanes and cover
It is located at the lower end of the cylindrical body 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, comprising: dense from distilling by carrier gas of air
The air inlet of contracting tower enters, and adds in distillation and concentration tower with from the preheated device preheating under the spray of distillation and concentration tower upper end, heat exchanger
The thermally desulfurizing waste water convection current of heat, partial moisture is taken away by air in desulfurization wastewater, respectively obtains wet saturated air and desulfurization wastewater
Concentrate；The wet saturated air is first compressed through air thermal compression unit, then preheated device phase-change heat-exchange, vapor condensation therein
Condensed water and dehumidified air are formed, which enters air inlet unit pressure-cycling by air expansion cell, condenses
The concentrate that water and concentrate are collected in cone bucket discharges naturally.Specifically, the heat source of heat exchanger is hot fume 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
The rubber or plastics that concentration selects carbon steel liner heatproof >=100 DEG C are [such as: polytetrafluoroethylene (PTFE), glass reinforced plastic, PP polypropylene, glass squama
Piece etc.] or metal [such as: stainless steel, titanium alloy, C276,1.4529] or the plastics of heatproof >=100 DEG C are [such as: polytetrafluoroethyl-ne
Alkene, glass reinforced plastic, PP polypropylene etc.].
In above-mentioned technical proposal, normal temperature air enters tower body from air inlet, with spinning updraft and atomization in tower
Waste water convection current is concentrated in thermally desulfurizing, and the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries the wet saturation of moisture
Air is exported from humid air and is discharged.Air cleaner is used for air filtration, and blower is used to provide power for air.Preheater one
The heat that aspect is used to collect humid air tentatively preheats desulfurization wastewater, on the other hand carries out dehumidification by condensation to humid air, this is cold
Condensate is recycled up to distilled water water quality, and the air of dehumidifying continues with from air inlet, avoids discharging exhaust gas into atmosphere.
For heat exchanger for being further heated to required temperature to the desulfurization wastewater of preheating, the heat source for providing heat for preheater can be heat
Water, steam or the hot fume of power plant.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve airdistillation dense
Contracting efficiency, air inlet modulating mechanism and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas
Distributed modulation device respectively includes intermediate modulation axis body and set on the modulation blade for modulating axis body surrounding.Exit gas distributed modulation
Device is located at the vertical direction of inlet gas distributed modulation device, is all located on the center line of tower body；Entrance guiding plate is in vertical direction
It is upper to be located at below inlet gas distributed modulation device, face air intake pipe in horizontal direction；Deflector is exported in vertical direction
It is upper to be located above exit gas distributed modulation device, face air exhaust pipeline in horizontal direction；Air enters from admission line to be blown
Being guided to entrance guiding plate by horizontal fluidised form is vertical fluidised form, then blows to inlet gas distributed modulation device by vertical ascent fluidised form tune
It is made as successively blowing to exit gas distributed modulation device, outlet after rotation rises fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization
Deflector discharge.The modulation axis body of exit gas distributed modulation device and the modulation axis body picture of inlet gas distributed modulation device are a pair of empty
Quasi- bearing, inlet gas distributed modulation device, exit gas distributed modulation device are jointly scattered in air-flow to rotate around atomized drop
The cyclone flow patterns of movement realize efficient mass transfer heat transfer, keep air inlet/outlet more uniform, space utilization rate greatly improves in tower, effectively
Reduce tower height degree.Inlet gas distributed modulation device modulation axis body centre be cylindrical body, both ends be semicircle sphere or cone,
Modulation blade can be enhanced to the rotation modulation intensity of gas, the lower end semi-round ball of the modulation axis body of exit gas distributed modulation device
Body or cone have same effect.Pressure difference in circulation is kept using compression and expansion device.In the circulating cycle, it leaves
The saturated moist air mechanical compressor or vapor compressor (TVC) of destilling tower compress, and then dehumidify in preheater, then make
Make the air expansion after dehumidifying with throttle valve or air expander, the air of expansion enters air inlet unit and is sent to distillation
Therefore tower, air are run in the closed circuit.This pressure-cycling can significantly improve the thermal efficiency, and capacity usage ratio is high.
System and method provided by the utility model can effectively be concentrated desulfurization wastewater, while have following excellent
Point:
1, concentrated water drainage is much smaller than other concentration Decrement Techniques, significantly mitigation end-o f-pipe -control (such as evaporative crystallization)
Investment and O&M expense [compared with MVC/MED thermal concentration technology, the investment of end-o f-pipe -control (such as: evaporative crystallization) and operation and maintenance expenses
With 25% or more can be reduced；Compared with RO high pressure reverse osmosis concentration technology, the investment and fortune of end-o f-pipe -control (such as: evaporative crystallization)
Dimension expense can reduce by 50% or more；Compared with the positive osmosis concentration technology of FO, the investment and fortune of end-o f-pipe -control (such as: evaporative crystallization)
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 is manufactured using plastic materials or ordinary carbon steel plastic lining class material, and is used and directly connect
Touch heat and mass, heat and mass efficiency with higher and excellent anti-corrosion anti-scale performance.
4, lower to pretreatment water quality requirement, it not will increase desulfurization wastewater pretreatment investment and O&M expense；
5, equipment investment is few, occupied area is small, operation and maintenance are simple, and investment and O&M expense are reduced much smaller than other concentrations
Technology [can reduce by 60% or more investment；50% or more operating cost can be reduced], system run all right is reliable, and treatment effect is bright
It is aobvious, water is produced up to distilled water water quality, is better than " GB/T19923-2005 urban sewage reutilization-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 solidified
Processing.
The effect of above-described embodiment is specifically to introduce the essentiality content of the utility model, but those skilled in the art answer
When knowing, the protection scope of the utility model should not be confined to the specific embodiment.
Claims (8)
1. a kind of thermal wastewater concentration systems that air pressure-cycling water is in line, it is characterised in that: including air inlet unit, waste water
Feed liquor unit, distillation and concentration tower, waste water heating unit, air 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 humid air；
The air inlet unit includes air cleaner and blower, and it is dense from distilling that air successively passes through air cleaner, blower
The air inlet of contracting tower enters 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 preheater in the waste water input duct and
Heat exchanger, successively preheated device and heat exchanger heating enter tower body to waste water；
The preheater also passes through the humid air outlet of air thermal compression unit Yu distillation and concentration tower, the humid air warp of compression
Enter air inlet unit pressure-cycling by air expansion cell after preheater dehumidification by condensation；The heat exchanger also be provided as
The heat source connection of waste water heating；
The concentrate collects cone bucket and is equipped with drain valve and positive displacement pump, and concentrate is through drain valve and positive displacement pump direct emission；
The waste water is desulfurization wastewater pretreated water.
2. thermal wastewater concentration systems according to claim 1, it is characterised in that: further include at the tower body air inlet into
Gas 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 horizontal gas flow to be guided to the entrance guiding plate 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 are set to modulation
The modulation blade of axis body surrounding；The centre of the modulation axis body of inlet gas distributed modulation device is cylindrical body, and both ends are semicircle sphere
Or cone；The modulation axis body of exit gas distributed modulation device is the cylindrical body that a lower end is semicircle sphere or cone；It is described
The lower end that blade is set to cylindrical body is modulated, including multiple be in tilted layout is used in cylindrical body 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. thermal wastewater concentration systems according to claim 2, it is characterised in that: the entrance guiding plate or outlet deflector
It horizontal segment is connected by horizontal segment, vertical section and with vertical section to the segmental arc of transition forms respectively.
4. thermal wastewater concentration systems according to claim 2, it is characterised in that: stirrup and outer hoop in the modulation vanes
Muscle is equidistant circumferentially fixed and the lower end of the cylindrical body that is set in gas distributed modulation device.
5. thermal wastewater concentration systems according to claim 2, it is characterised in that: the modulation axis body is hollow structure.
6. thermal wastewater concentration systems according to claim 1, it is characterised in that: the waste water input duct is located in tower body
And downwardly open one end is equipped with atomizer.
7. thermal wastewater concentration systems according to claim 1, it is characterised in that: heat source is hot water, steam or hot fume.
8. thermal wastewater concentration systems according to claim 1, it is characterised in that: the air thermal compression unit is machinery pressure
Contracting machine or vapor compressor；The air expansion cell is throttle valve or air expander.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386016.4U CN209113524U (en) | 2018-03-21 | 2018-03-21 | A kind of thermal wastewater concentration systems that air pressure-cycling water is in line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386016.4U CN209113524U (en) | 2018-03-21 | 2018-03-21 | A kind of thermal wastewater concentration systems that air pressure-cycling water is in line |
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| CN209113524U true CN209113524U (en) | 2019-07-16 |
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