CN209098233U - A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line - Google Patents
A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line Download PDFInfo
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- CN209098233U CN209098233U CN201820386054.XU CN201820386054U CN209098233U CN 209098233 U CN209098233 U CN 209098233U CN 201820386054 U CN201820386054 U CN 201820386054U CN 209098233 U CN209098233 U CN 209098233U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000004821 distillation Methods 0.000 claims abstract description 26
- 239000012141 concentrate Substances 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 82
- 238000006477 desulfuration reaction Methods 0.000 claims description 33
- 230000023556 desulfurization Effects 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 23
- 239000003517 fume Substances 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
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- 238000002425 crystallisation Methods 0.000 description 9
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- 238000012423 maintenance Methods 0.000 description 7
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- 239000004743 Polypropylene Substances 0.000 description 4
- 238000000889 atomisation 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
- 239000012528 membrane Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
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Abstract
The utility model discloses a kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line, air is heated to obtain hot-air through heat exchanger by the system and method from air inlet unit, enter using the hot-air as carrier gas from distillation and concentration tower air inlet, 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, are related to the concentration decrement of waste water, and in particular to a kind of hot-air transformation
The in line thermal wastewater concentration systems of recirculated water and waste water airdistillation method for concentration based on the system, which can be de-
Sulphur 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
The utility model aim is to overcome the deficiencies of the prior art and provide a kind of heat that hot-air pressure-cycling water is in line
Waste water concentrating system 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 hot-air pressure-cycling water is in line, including it is air inlet unit, useless
Water feed liquor unit and distillation and concentration tower further include that air-heating unit, waste water heating unit, air thermal compression unit and expansion are single
Member；
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-heating unit includes First Heat Exchanger, air
Successively enter tower body from the air inlet of distillation and concentration tower by air cleaner, blower, First Heat Exchanger；The First Heat Exchanger
Also it is connected to the heat source heated for air；
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, the second heat exchanger, the preheated device preheating of waste water, the heating of the second heat exchanger enter tower body；Preheater also passes through air hot compression
The humid air outlet of unit and distillation and concentration tower is expanded by air after the preheated device dehumidification by condensation of the humid air of compression single
Member enters air inlet unit pressure-cycling；Second heat exchanger is also connected to the heat source 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: air is added from air inlet unit through heat exchanger
Heat obtains hot-air, using the hot-air be carrier gas from distillation and concentration tower air inlet enter, in distillation and concentration tower with from distillation it is dense
The thermal wastewater convection current of the preheating of preheated device, heat exchanger heating under the spray of contracting tower upper end, useless water part moisture are taken away by air, point
Wet saturated air and Waste water concentrating liquid are not obtained；The wet saturated air is first compressed through air thermal compression unit, then preheated device phase
Transformation heat, vapor therein condense to form condensed water and dehumidified air, which enters sky by air expansion cell
The concentrate that gas air admission unit pressure-cycling, condensed water and concentrate are collected in cone bucket 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, and [note: heat source is the hot-air and desulfurization wastewater after gas and hydraulic fluid side while heating as the temperature rises
Pretreated water], saturated moist air partial pressure with higher and higher water content are humidified by dry air and realize desulfurization wastewater
The evaporation of pretreated water and the concentration of salinity.The high temperature saturated moist air that packed tower is discharged recycles heat preheated air through heat exchanger
After be discharged into desulfurizing tower as sulfur removal technology moisturizing, producing water can reach distilled water water quality, be better than the technology of " GB/T19923-2005 "
Standard.Airdistillation concentrate is for the damping of coal-burning power plant's dry ash slag or drains into end solidified cell progress curing process, thus
Realize Desulphurization for Coal-fired Power Plant wastewater zero discharge.
In above-mentioned technical proposal, the air of heating enters tower body from air inlet, with spinning updraft and atomization in tower
Thermally desulfurizing waste water convection current is concentrated, the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries the wet full of moisture
It exports and is discharged from humid air with air.Air cleaner is used for air filtration, and blower is used to provide power for air.Preheater
On the one hand desulfurization wastewater is tentatively preheated for collecting the heat of humid air, dehumidification by condensation on the other hand is carried out to humid air, it should
Condensed water is recycled up to distilled water water quality, and the air of dehumidifying is continued with from air inlet, avoids discharging into atmosphere useless
Gas.Heat exchanger for being heated to required temperature to air, desulfurization wastewater, for the heat source that heat exchanger provides heat can be hot water,
The hot fume of steam or power plant.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve airdistillation concentration effect
Rate, air inlet modulating mechanism and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas distribution
Modulator respectively includes intermediate modulation axis body and set on the modulation blade for modulating axis body surrounding.Exit gas distributed modulation device position
In the vertical direction of inlet gas distributed modulation device, it is all located on the center line of tower body；Entrance guiding plate position in vertical direction
Below inlet gas distributed modulation device, face air intake pipe in horizontal direction；Export deflector position in vertical direction
Above exit gas distributed modulation device, face air exhaust pipeline in horizontal direction；Air from admission line enter blow into
Mouth deflector is vertical fluidised form by the guidance of horizontal fluidised form, then blows to inlet gas distributed modulation device and be modulated to by vertical ascent fluidised form
Rotation successively blows to exit gas distributed modulation device, outlet water conservancy diversion after rising fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization
Plate discharge.Modulation axis body picture a pair of imaginary axis of the modulation axis body and inlet gas distributed modulation device of exit gas distributed modulation device
It holds, inlet gas distributed modulation device, exit gas distributed modulation device are scattered in air-flow around atomized drop rotary motion
Cyclone flow patterns, realize efficient mass transfer heat transfer, keep air inlet/outlet more uniform, space utilization rate greatly improves in tower, is effectively reduced
Tower height degree.The centre of the modulation axis body of inlet gas distributed modulation device is cylindrical body, and both ends are semicircle sphere or cone, can be with
Enhanced modulation blade to the rotation modulation intensity of gas, the lower end semicircle sphere of the modulation axis body of exit gas distributed modulation device or
Cone has same effect.Pressure difference in circulation is kept using compression and expansion device.In the circulating cycle, distillation is left
The saturated moist air mechanical compressor or vapor compressor (TVC) of tower compress, and then dehumidify in preheater, reuse section
Stream valve or air expander make the air expansion after dehumidifying, and the air of expansion enters air inlet unit and is sent to destilling tower, empty
Therefore gas is 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 hot-air pressure-cycling water as shown in Figure 1, including
Air inlet unit, desulfurization wastewater feed liquor unit and distillation and concentration tower further include air-heating unit, desulfurization wastewater heating list
Member, 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-heating unit includes First Heat Exchanger, air
Successively enter tower body from the air inlet of distillation and concentration tower by air cleaner, blower, First Heat Exchanger；First Heat Exchanger also with
For heat source (hot water, the steam or hot fume) connection of air heating；
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 preheater, the second heat exchanger being set in desulfurization wastewater input duct, the preheated device preheating of desulfurization wastewater, the second heat exchanger
Heating enters tower body；Preheater also passes through the humid air outlet of air thermal compression unit Yu distillation and concentration tower, compression it is wet
Enter air inlet unit pressure-cycling by air expansion cell after the preheated device dehumidification by condensation of air；Second heat exchanger
Also it is connected to the heat source (hot water, steam or hot fume) heated for desulfurization wastewater；The air thermal compression unit is mechanical compression
Machine 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, including air is passed through from air inlet unit
Heat exchanger heats to obtain hot-air, using the hot-air be carrier gas from distillation and concentration tower air inlet enter, in distillation and concentration tower with
The part from the thermally desulfurizing waste water convection current of the preheating of preheated device, heat exchanger heating under the spray of distillation and concentration tower upper end, desulfurization wastewater
Moisture is taken away by air, respectively obtains wet saturated air and desulfurization wastewater concentrate；The wet saturated air is first through air hot compression
Cell compression, then preheated device phase-change heat-exchange, vapor therein condense to form condensed water and dehumidified air, dehumidified air warp
It crosses air expansion cell and enters air inlet unit pressure-cycling, the concentrate that condensed water and concentrate are collected in cone bucket is arranged naturally
It puts.
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, the air of heating enters tower body from air inlet, with spinning updraft and atomization in tower
Thermally desulfurizing waste water convection current is concentrated, the desulfurization concentration waste water by concentration enters concentrate and collects cone bucket, carries the wet full of moisture
It exports and is discharged from humid air with air.Air cleaner is used for air filtration, and blower is used to provide power for air.Preheater
On the one hand desulfurization wastewater is tentatively preheated for collecting the heat of humid air, dehumidification by condensation on the other hand is carried out to humid air, it should
Condensed water is recycled up to distilled water water quality, and the air of dehumidifying is continued with from air inlet, avoids discharging into atmosphere useless
Gas.Heat exchanger for being heated to required temperature to air, desulfurization wastewater, for the heat source that heat exchanger provides heat can be hot water,
The hot fume of steam or power plant.In order to reduce tower height, equipment investment and occupied space are reduced, needs to improve airdistillation concentration effect
Rate, air inlet modulating mechanism and bleed modulation mechanism can play this effect.Inlet gas distributed modulation device, exit gas distribution
Modulator respectively includes intermediate modulation axis body and set on the modulation blade for modulating axis body surrounding.Exit gas distributed modulation device position
In the vertical direction of inlet gas distributed modulation device, it is all located on the center line of tower body；Entrance guiding plate position in vertical direction
Below inlet gas distributed modulation device, face air intake pipe in horizontal direction；Export deflector position in vertical direction
Above exit gas distributed modulation device, face air exhaust pipeline in horizontal direction；Air from admission line enter blow into
Mouth deflector is vertical fluidised form by the guidance of horizontal fluidised form, then blows to inlet gas distributed modulation device and be modulated to by vertical ascent fluidised form
Rotation successively blows to exit gas distributed modulation device, outlet water conservancy diversion after rising fluidised form, with the thermally desulfurizing waste water mass transfer convection current of atomization
Plate discharge.Modulation axis body picture a pair of imaginary axis of the modulation axis body and inlet gas distributed modulation device of exit gas distributed modulation device
It holds, inlet gas distributed modulation device, exit gas distributed modulation device are scattered in air-flow around atomized drop rotary motion
Cyclone flow patterns, realize efficient mass transfer heat transfer, keep air inlet/outlet more uniform, space utilization rate greatly improves in tower, is effectively reduced
Tower height degree.The centre of the modulation axis body of inlet gas distributed modulation device is cylindrical body, and both ends are semicircle sphere or cone, can be with
Enhanced modulation blade to the rotation modulation intensity of gas, the lower end semicircle sphere of the modulation axis body of exit gas distributed modulation device or
Cone has same effect.Pressure difference in circulation is kept using compression and expansion device.In the circulating cycle, distillation is left
The saturated moist air mechanical compressor or vapor compressor (TVC) of tower compress, and then dehumidify in preheater, reuse section
Stream valve or air expander make the air expansion after dehumidifying, and the air of expansion enters air inlet unit and is sent to destilling tower, empty
Therefore gas is 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 hot-air pressure-cycling water is in line, it is characterised in that: including air inlet unit, give up
Water feed liquor unit and distillation and concentration tower further include that air-heating unit, waste water heating unit, air thermal compression unit and expansion are single
Member；
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 air-heating unit includes First Heat Exchanger, and air is successively
Enter tower body from the air inlet of distillation and concentration tower by air cleaner, blower, First Heat Exchanger；The First Heat Exchanger also with
For the heat source connection of air heating；
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 includes preheater in the waste water input duct, the
Two heat exchangers, the preheated device preheating of waste water, the heating of the second heat exchanger enter tower body；Preheater also pass through air thermal compression unit with
The humid air outlet of distillation and concentration tower enters by air expansion cell after the preheated device dehumidification by condensation of the humid air of compression
Air inlet unit pressure-cycling；Second heat exchanger is also connected to the heat source 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；
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 |
|---|---|---|---|
| CN201820386054.XU CN209098233U (en) | 2018-03-21 | 2018-03-21 | A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820386054.XU CN209098233U (en) | 2018-03-21 | 2018-03-21 | A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line |
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| CN209098233U true CN209098233U (en) | 2019-07-12 |
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| CN201820386054.XU Active CN209098233U (en) | 2018-03-21 | 2018-03-21 | A kind of thermal wastewater concentration systems that hot-air pressure-cycling water is in line |
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| Country | Link |
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| CN (1) | CN209098233U (en) |
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2018
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