CN207047042U - Desulfurization wastewater treatment system - Google Patents
Desulfurization wastewater treatment system Download PDFInfo
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- CN207047042U CN207047042U CN201720652488.5U CN201720652488U CN207047042U CN 207047042 U CN207047042 U CN 207047042U CN 201720652488 U CN201720652488 U CN 201720652488U CN 207047042 U CN207047042 U CN 207047042U
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- desulfurization wastewater
- heat exchanger
- water
- deduster
- desulfurizer
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 121
- 230000023556 desulfurization Effects 0.000 title claims abstract description 118
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 25
- 239000002351 wastewater Substances 0.000 claims abstract description 120
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000003546 flue gas Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000009287 sand filtration Methods 0.000 claims abstract description 27
- 238000000889 atomisation Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 9
- 238000013459 approach Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- 239000007921 spray Substances 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 18
- 238000011001 backwashing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 description 17
- 230000003009 desulfurizing effect Effects 0.000 description 9
- 239000003595 mist Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 238000005507 spraying Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001410 inorganic ion Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a kind of desulfurization wastewater treatment system, including desulfurizer, waste-water vortex device, Sand Filtration System, chimney flue type heat exchanger, supersonic atomizer and the deduster being sequentially communicated.Waste-water vortex device carries out separation of solid and liquid to desulfurization wastewater.Sand Filtration System filters to desulfurization wastewater.Chimney flue type heat exchanger is located at the gas approach of desulfurizer, and desulfurization wastewater in chimney flue type heat exchanger with high-temperature flue gas in being exchanged heat.Supersonic atomizer has nozzle, and supersonic atomizer carries out atomization process to form droplet to desulfurization wastewater.Deduster has inlet flue duct, the nozzle of supersonic atomizer is installed in the inlet flue duct of deduster so that the desulfurization wastewater after atomization is sprayed onto the inlet flue duct of deduster, the desulfurization wastewater of atomization is dried by high-temperature flue gas and separates out inorganic salt particle, and inorganic salt particle enters deduster and is removed.
Description
Technical field
It the utility model is related to technical field of waste water processing, more particularly to a kind of desulfurization wastewater treatment system.
Background technology
At home under the requirement of environmental transformation, the overwhelming majority is in-service at present and is provided with flue gas with newly-built fired power generating unit
Wet desulphurization device, to ensure that the flue gas of the discharged from coal-fired boiler of fired power generating unit is up to standard, in particular up to strict is environmentally friendly ultralow
Discharge standard.Wherein, more than 90% coal-burning power plant uses Limestone-gypsum Wet Flue Gas Desulfurization Process technique and its device, the technique
Advantages, it is widely used, its Main By product is desulfurated plaster and desulfurization wastewater.Desulfurated plaster can reuse, still
Desulfurization wastewater is because containing substantial amounts of impurity, and such as suspension, inorganic ion, heavy metal ion are, it is necessary to carry out purified treatment
It can discharge, this can undoubtedly produce a high operation and maintenance expenses and use.
Limestone-gypsum desulphurization system includes desulfurizing tower.Due to prohibiting at present in fired power generating unit desulphurization system
Desulfurization is set to bypass, therefore after the flue gas of discharged from coal-fired boiler must be processed via desulfurizing tower, could be further via cigarette
Arranged outside chimney.Inside the towers such as inner wall anti-corrosive layer, fiberglass spraying layer, oxidation wind pipeline and polypropylene (PP) demister of desulfurizing tower
The tolerable temperature scope of part is no more than 80 DEG C.Usually, normal operating temperature at 50 DEG C or so, can meet tower in desulfurizing tower
The tolerable temperature requirement of inner part.However, the flue-gas temperature in the air-introduced machine exit of coal-burning boiler is typically at 110 DEG C to 160 DEG C
Between, can not certainly will directly it enter that is out the tolerable temperature of the part in desulfurizing tower, therefore from the flue gas of discharged from coal-fired boiler
Enter in desulfurizing tower.That is, the flue-gas temperature into wet desulphurization device is too high, the height of wet desulphurization device how will be entered
It is a problem that warm flue gas, which carries out advance chilling cooling,.
Current existing desulfuration waste water treatment process generally comprises the basic steps such as neutralization, flocculation, precipitation, outer row.It is near several
People's many desulfuration waste water treatment process, such as evaporation, reuse, clarification technique newly developed over year.Although these techniques for
The recycling of desulfurization wastewater has certain effect and effect, but problem is also relatively more, such as needs newly-increased large number quipments facility, accounts for
Ground area is big, investment is big, technological process is complicated, equipment failure rate is high, operational effect is undesirable, dehydrating effect is bad, at product
Reason disposal is inconvenient, exists and phenomenon etc. is arranged outside waste water.These problems have a strong impact on the commercial Application of desulfuration waste water treatment process.
Utility model content
The purpose of this utility model is to provide a kind of processing system of desulfurization wastewater, is handled with solving existing desulfurization wastewater
The flue-gas temperature entered in above mentioned problem existing for technique and existing wet desulfurizing process in desulfurizer is too high, not yet in effect
The problem of chilling cools.
To solve the above problems, this real utility model provides a kind of desulfurization wastewater treatment system, including desulfurizer, waste water
Cyclone, Sand Filtration System, chimney flue type heat exchanger, supersonic atomizer and deduster.
Waste-water vortex device is communicated in the desulfurizer, and waste-water vortex device carries out separation of solid and liquid to desulfurization wastewater.
Sand Filtration System is communicated in waste-water vortex device, and Sand Filtration System filters to desulfurization wastewater.
Chimney flue type heat exchanger is communicated in Sand Filtration System and changed positioned at the gas approach of desulfurizer, desulfurization wastewater in chimney flue type
Exchanged heat in hot device with high-temperature flue gas.
Supersonic atomizer is communicated in chimney flue type heat exchanger and has nozzle, and supersonic atomizer enters to desulfurization wastewater
Row atomization process is to form droplet.
Deduster has inlet flue duct, and the nozzle of supersonic atomizer is installed in the inlet flue duct of deduster so that atomization
Desulfurization wastewater afterwards is sprayed onto the inlet flue duct of deduster, and the desulfurization wastewater of atomization is dried by high-temperature flue gas and separates out inorganic salts
Grain, inorganic salt particle enter deduster and are removed.
According to the embodiment of the utility model one, Sand Filtration System includes filtration system and backwashing system, and filtration system is used for
Desulfurization wastewater is filtered, backwashing system is used to backwash.
According to the embodiment of the utility model one, chimney flue type heat exchanger includes water inlet pipe, heat exchanger components and water spray grid, enters
Water pipe, heat exchanger components and water spray grid three are interconnected, and heat exchanger components are duct type heat exchanger components, and water spray grid, which is located at, to be changed
The side of thermal part, water spray grid towards and be directed at the heat exchanger components.
According to the embodiment of the utility model one, chimney flue type heat exchanger further comprises the first control valve and the second control valve,
First control valve is connected between water inlet pipe and heat exchanger components, and the second control valve is connected between water inlet pipe and water spray grid.
According to the embodiment of the utility model one, desulfurization wastewater treatment system further comprise can pressurizing delivery pump, can be pressurized
Delivery pump is connected between waste-water vortex device and chimney flue type heat exchanger, and waste water delivery pump has function of increasing pressure.
According to the embodiment of the utility model one, deduster is communicated in desulfurizer, and desulfurization wastewater is through removing inorganic salt particle
And purification forms water vapour and is back to desulfurizer.
Compared with prior art, the technical program has advantages below：
The utility model passes through waste-water vortex device, Sand Filtration System, chimney flue type heat exchanger, supersonic atomizer and dedusting
Device, it is possible to achieve the desulfurization wastewater that desulfurizer discharges is subjected to separation of solid and liquid successively, filtering, heat exchange heating, atomization process with
And drying separates out the series of processing steps such as inorganic salts, reaches cleaning and desulfurization waste water, finally obtains the mesh of purified water vapour
, meet the requirement of environmental protection.Second, it is passed into again in desulfurizer via the water vapour after purification, realizes desulfurization wastewater zero
Discharge, saving water resource.3rd, it is de- to enter by the way that chimney flue type heat exchanger to be arranged to the gas approach of desulfurizer
High-temperature flue gas in sulphur device carries out vapor liquid heat exchange with the desulfurization wastewater circulated in chimney flue type heat exchanger, on the one hand to desulfurization
Waste water heating improves the evaporation efficiency of atomization process process, reduces ultrasonic fog makeup in order to carry out follow-up atomization process
The inlet flue duct length put, Mist heat recovering, energy-conserving and environment-protective, on the other hand to cooling high-temperature fume, avoid enter into desulfurization dress
It is too high to put inside smoke temperature, can so maximally utilize desulfurization wastewater resource, reduces the exhaust gas volumn of desulfurizer processing, section
Desulfurizer space is saved, reduces the investment of desulfurizer.3rd, the desulfurization wastewater treatment system can effectively remove desulfurization and give up
Inorganic salts, heavy metal ion in water, do not produce secondary pollution.
Sand Filtration System of the present utility model includes filtration system and backwashing system, you can desulfurization is given up using filtration system
Water is filtered, and periodically Sand Filtration System can be backwashed again to clean the deposit of internal deposition, ensure filter efficiency, just
Cleaning, care and maintenance in Sand Filtration System.
On the one hand the utility model can be sprayed water to heat exchanger components, so as to clean by grid of spraying water by grid of spraying water
Heat exchanger components, on the other hand it can carry out heat with the high-temperature flue gas being passed through in chimney flue type heat exchanger using the water for grid injection of spraying water
Exchange, so as to more fully cooling high temperature flue gas, the problem of avoiding cooling high-temperature fume amplitude undesirable.
The utility model by set can pressurizing delivery pump, can out of desulfurizer technique water tank amount of makeup water to flue
Formula heat exchanger, avoid the inlet channel hydraulic pressure of chimney flue type heat exchanger inadequate, spray water grid and the same luck of heat exchanger components can be met
OK.
Brief description of the drawings
Fig. 1 is the structural representation for the desulfurization wastewater treatment system that the utility model embodiment provides；
Fig. 2 is the structural representation of the chimney flue type heat exchanger of above-mentioned desulfurization wastewater treatment system.
Embodiment
Description is served only for disclosing the utility model to enable those skilled in the art to implement the utility model below.With
Preferred embodiment in lower description is only used as illustrating, it may occur to persons skilled in the art that other obvious deformations.With
The general principle of the present utility model defined in lower description can be applied to other embodiments, deformation program, improvement project, be equal
Scheme and other without departing from the spirit and scope of the utility model other schemes.
As shown in figure 1, the utility model provides a kind of desulfurization wastewater treatment system, the desulfurization wastewater treatment system includes
Desulfurizer 1, waste-water vortex device 2, Sand Filtration System 3, chimney flue type heat exchanger 4, supersonic atomizer 5, deduster 6.Waste water revolves
Stream device 2 is communicated in the desulfurizer 1, and waste-water vortex device 2 carries out separation of solid and liquid to desulfurization wastewater.Sand Filtration System 3 is communicated in useless
Water cyclone 2, Sand Filtration System 3 filter to desulfurization wastewater.Chimney flue type heat exchanger 4 is communicated in Sand Filtration System 3 and is located at desulfurization
The gas approach 11 of device 1, desulfurization wastewater are exchanged heat in chimney flue type heat exchanger 4 with high-temperature flue gas.Supersonic atomizer 5
It is communicated in chimney flue type heat exchanger 4 and there is nozzle, supersonic atomizer 5 carries out atomization process to form mist to desulfurization wastewater
Drop.Deduster 6 has inlet flue duct 61, and the nozzle of supersonic atomizer 5 is installed in the inlet flue duct 61 of deduster 6 so that mist
Desulfurization wastewater after change is sprayed onto the inlet flue duct 61 of deduster 6, and the desulfurization wastewater of atomization is dried by high-temperature flue gas and separates out nothing
Machine salt particle, inorganic salt particle enter deduster 6 and are removed.
Specifically, desulfurization wastewater caused by desulfurizer 1 is delivered to waste-water vortex device 2, waste water rotation through waste water delivery pump
Stream device 2 carries out separation of solid and liquid to desulfurization wastewater and forms underflow and overflow.Waste-water vortex device 2 have fine particle classification remove,
Overflow filtering function, it disclosure satisfy that overflow solid content is not more than 1%.The underflow of waste-water vortex device 2 is discharged into desulfurizer 1, waste water
The excessive waste water flowing delivery pump of cyclone 2 is discharged into Sand Filtration System 3.
Sand Filtration System 3 has the function of the macromolecular solid particle and colloid in retention desulfurization wastewater, makes desulfurization wastewater clear
Clearly, and the iron ion in desulfurization wastewater can be removed.Sand Filtration System 3 includes filtration system 31 and backwashing system 32.Filtering
System 31 is used to filter, and backwashing system 32 is used to backwash, technique water tank of the backwashing water from desulfurizer 1, backwash
Sewer enters the desulfurizing tower of desulfurizer 1 and by being arranged outside gypsum belt dewaterer, and backwash frequency is according to actual motion feelings
Depending on condition.In the present embodiment, Sand Filtration System 3 realizes continuous work, and desulfurization wastewater is after the filtration treatment of Sand Filtration System 3, filtering
The desulfurization wastewater solid content gone out is not more than 0.01%.Desulfurization wastewater after the filtering of Sand Filtration System 3 is conveyed by waste water delivery pump
To chimney flue type heat exchanger 4.
The function of chimney flue type heat exchanger 4 is liquid-gas heat exchange and the cooling of wet desulphurization device chilling.Desulfurization wastewater is in chimney flue type
Pending high-temperature flue gas in heat exchanger 4 with desulfurizer 1 carries out liquid-gas heat exchange, so as to real by such mode, one side
Now desulfurization wastewater is heated up, on the other hand realizes and high-temperature flue gas chilling is cooled.
Fig. 2 illustrates the structure of chimney flue type heat exchanger 4, with reference to figure 1 and Fig. 2, chimney flue type heat exchanger 4 include water inlet pipe 41,
Heat exchanger components 42 and water spray grid 43.Water inlet pipe 41, heat exchanger components 42 and the water spray three of grid 43 are mutual by three-way pipeline
It is connected.Heat exchanger components 42 are a kind of duct type heat exchanger components.Water spray grid 43 is located at the side of heat exchanger components 42, grid of spraying water
43 nozzle to towards and quasi- heat exchanger components 42 pipeline gap.Chimney flue type heat exchanger 4 sets control valve, is intake for adjusting
Flow direction.
Desulfurization wastewater after filtering enters heat exchanger components 42 by water inlet pipe 41.Desulfurization wastewater is in chimney flue type heat exchanger 4
Fully contacted with high-temperature flue gas, desulfurization wastewater heat absorption heating, high-temperature flue gas heat release drop, realize and high-temperature flue gas chilling is cooled.
It is noted that when grid 43 of spraying water is opened, desulfurization wastewater enters water spray grid 43 and is sprayed onto heat exchanging part
Part 42.The high-temperature flue gas of the water spray desulfurization wastewater of grid 43 and wet desulphurization device 1 carries out chilling cooling, on the other hand can clean
Heat exchanger components 42.
Chimney flue type heat exchanger 40 also includes the first control valve 44 and the second control valve 45, and the first control valve 44 is arranged at heat exchange
Between part 42 and water inlet pipe 41, the second control valve 45 is arranged between water spray grid 43 and water inlet pipe 41.First control valve 44
It is used to adjust water inlet flow direction with the second control valve 45.
During chimney flue type 40 conventional operation of heat exchanger, the second control valve 45 is closed, opens the first control valve 44, desulfurization wastewater warp
First control valve 44 enters heat exchanger components 42 and carries out vapor liquid heat exchange, and high-temperature flue-gas reduces, the rise of desulfurization wastewater temperature.
Flue gas after cooling enters desulfurizer 1, and the desulfurization wastewater after heating enters supersonic atomizer 5.
The supersonic generator of supersonic atomizer 5 can make the desulfurization wastewater after heat temperature raising pass through dither mist
Change, desulfurization wastewater is atomized into 10um~60um mist droplet after entering supersonic atomizer 5, and discharge it is substantial amounts of bear from
Son.The mist droplet that atomization is formed is injected into deduster 6.
Deduster 6 has inlet flue duct 61, and the nozzle of supersonic atomizer 5 is installed in the inlet flue duct 61 of deduster 6
So that the desulfurization wastewater after atomization is injected into the inlet flue duct 61 of deduster.Mist droplet is in inlet flue duct 61 by high-temperature flue gas
Drying, inorganic in mist droplet are salted out to form inorganic salt particle and enter with high-temperature flue gas inside deduster 6.Inorganic salts
Particle is removed in deduster 6 with dust.Deduster 6 is communicated in desulfurizer 1, the water for removing inorganic salts and being cleaned
Steam is back to desulfurizer 1 to enter next circulation with flue gas.
When chimney flue type heat exchanger 40 run a period of time after, the surface of heat exchanger components 42 may dust stratification, it is necessary to be cleaned.
Now, the second control valve 45 is opened, closes the first control valve 44, water spray grid 43 is run to be cleaned with exchanging thermal part 42.
After cleaning terminates, the second control valve 45 is closed, opens the first control valve 44, chimney flue type heat exchanger 40 continues positive conventional operation, clearly
Wash waste water and desulfurizer 1 is flowed into by the gas approach 11 of desulfurizer 1.
The desulfurization wastewater treatment system further comprise can pressurizing delivery pump 7, can pressurizing delivery pump 7 be connected to sand filtration system
System 3 and chimney flue type heat exchanger 4 between, and can pressurizing delivery pump 7 connect desulfurizer 1 technique water tank.Can pressurizing delivery pump 7
With function of increasing pressure so that heat exchanger components 42 and water spray grid 43 are run simultaneously.Can pressurizing delivery pump 7 and desulfurizer 1 technique
3rd control valve 8 is set between water tank, and the 3rd control valve 8 is arranged on the water pipeline of technique water tank of desulfurizer 1.
When flue-gas temperature is too high to cause parts damages, can the pressurization operation of pressurizing delivery pump 7, in the pipeline of water inlet pipe 41
Desulfurization wastewater pressure, which increases to, disclosure satisfy that while open the first control valve 44 and the second control valve 45, ensure the water spray He of grid 43
Heat exchanger components 42 while normal operation.
When 1 operation troubles of desulfurizer, high-temperature flue gas, which is directly entered desulfurizer 1, can cause serious thermal shock, in order to
Loss is reduced, it is necessary to carry out chilling cooling before high-temperature flue gas enters desulfurizer 1.Therefore when desulfurizer 1 breaks down,
Can the pressurization operation of pressurizing delivery pump 7, meet that the first control valve 44 and the second control valve 45 are opened simultaneously, spraying water grid 43 and exchanges heat
Part 42 while normal operation are high under the spray cooling of water spray grid 43 and the heat exchange cooling double action of heat exchanger components 42
Warm flue-gas temperature is reduced under the permissive temperature of desulfurizer 1 (being not more than 80 DEG C).That is, chimney flue type heat exchanger 4 have pair
High-temperature flue gas carries out the function of chilling cooling, and protection desulfurizer 1 is from thermal shock.
When cooling high-temperature fume amplitude is big, while run water spray grid 43 and heat exchanger components 42 need the desulfurization wastewater supplied
When measuring insufficient, opening controlling valve door 8, insufficient water from the technique water tank of desulfurizer 1 be delivered to can the entrance of pressurizing delivery pump 7 simultaneously
The water inlet pipe 41 of chimney flue type heat exchanger 4 is pumped into, reallocation enters water spray grid 43 and heat exchanger components 42, so as to supply water spray grid
43 and heat exchanger components 42 run institute's water requirement simultaneously, reach the effect of chilling cooling, and do not influence miscellaneous equipment normal operation.
Desulfurization wastewater treatment system provided by the utility model has the following advantages that：
First, desulfurization wastewater returns to desulfurizer 1 after being purified through the desulfurization wastewater treatment system, realizes desulfurization
Wastewater zero discharge, save water resource.Second, chimney flue type heat exchanger 4 serves many purposes, and is on the one hand used to reduce desulfurizer 1
Pending high-temperature flue-gas, on the other hand it is used to carry out heat temperature raising to desulfurization wastewater, realizes desulfurization wastewater recycling, heat
Can rationally it utilize.3rd, the place of desulfurizer 1 can be reduced by reducing flue-gas temperature by the heat exchange effect of chimney flue type heat exchanger 4
Exhaust gas volumn is managed, reduces the investment of desulfurizer 1, saves the space of desulfurizer 1.4th, realized by chimney flue type heat exchanger 4
Flue gas waste heat recovery, realize the purpose of energy-saving and emission-reduction.5th, the desulfurization wastewater after heat temperature raising first passes through supersonic atomizer
Deduster 6 is sprayed into after 5 atomization process again, evaporation rate of the desulfurization wastewater in the inlet flue duct 61 of deduster 6 is improved, reduces
The length requirement of inlet flue duct 61.6th, secondary pollution, Neng Gouyou are not produced in the desulfurization wastewater treatment system running
Inorganic ion, heavy metal ion in effect removal desulfurization wastewater.
According to another aspect of the present utility model, the utility model further provides for a kind of method for treating desulfurized wastewater, bag
Include following steps：
Solid-liquid separation step, desulfurization wastewater is delivered to waste-water vortex device 2 from desulfurizer 1 and carries out separation of solid and liquid processing,
To form underflow and overflow, wherein overflow solid content is not more than 1%；
Filtration step, the overflow after being handled by waste-water vortex device 2 is delivered to Sand Filtration System 3 and filtered, after filtering
Desulfurization wastewater solid content is less than 0.01%；
Heat exchange step, the desulfurization wastewater after filtering is delivered to the water inlet pipe 41 of chimney flue type heat exchanger 4, opens the first control
So that desulfurization wastewater enters the heat exchanger components 42 of chimney flue type heat exchanger 4 and shunted, desulfurization wastewater and high-temperature flue gas are changed valve 44
Heat, desulfurization wastewater heat absorption heating, high-temperature flue gas heat release cooling, wherein the first control valve 44 is connected to the water inlet pipe 41 and described
Between heat exchanger components 42；
Atomization steps, the desulfurization wastewater after heat exchange is delivered to the nozzle of supersonic atomizer 5, the cigarette after heat exchange cooling
Gas enters desulfurizer 1, and waste water is atomized into mist droplet, produces electric anion by supersonic atomizer 5；
Dust separation step, the desulfurization wastewater after atomization is sprayed into the inlet flue duct 61 of deduster 6, and the desulfurization after atomization is given up
Water in the inlet flue duct 61 of deduster by high-temperature flue gas in being dried, and the inorganic salts in desulfurization wastewater are precipitated simultaneously and dust is in dedusting
It is removed in device 6, desulfurization wastewater is cleaned to form water vapour through removing inorganic salts, and water vapour is back to de- by deduster 6
Sulphur device 1.
Especially, solid-liquid separation step, filtration step, heat exchange step, atomization steps and dust separation step cycle are entered
OK, desulfurization wastewater is made to realize zero-emission after multipurpose processing.
The method for treating desulfurized wastewater further comprises the steps：
Cleaning, the first control valve 44 is closed, open the second control valve 45 to run the water spray lattice of chimney flue type heat exchanger 4
Grid 43, desulfurization wastewater enters water spray grid 43 through water inlet pipe 41 and is sprayed onto heat exchanger components 42, so as to clean heat exchanger components 42, wherein
Second control valve 45 is connected between water inlet pipe 41 and water spray grid 43.
In the cleaning, gas approach 11 of the water through desulfurizer 1 after cleaning flows into the desulfurization of desulfurizer 1
Tower, wherein desulfurizing tower gas approach, which have, to be angled downward.
The method for treating desulfurized wastewater further comprises the steps：
Spray cooling step, when desulfurizer 1 runs failure or flue-gas temperature is too high, open first control
Valve 44 and second control valve 45 are to run the heat exchanger components 42 and the water spray grid 43 simultaneously, so that flue gas while quilt
Spray cooling and heat exchange cool；
Amount of makeup water step, the 3rd control valve 8 on the water pipeline for the technique water tank for being arranged at desulfurizer 1 is opened,
With from technique water tank amount of makeup water to chimney flue type heat exchanger 4.
It is understood that the function of chimney flue type heat exchanger 4 is desulfurization wastewater and high-temperature flue gas is exchanged heat.Chimney flue type
For heat exchanger 4 in day-to-day operation, desulfurization wastewater enters water inlet pipe 41 by three-way pipeline, opens positioned at the side of heat exchanger components 42
First control valve 44, closes the second control valve 45 positioned at water spray grid 43 side, desulfurization wastewater enter heat exchanger components 42 and and
High-temperature flue gas carries out heat exchange.When needing to clean heat exchanger components 42, then on the contrary, closing the positioned at the side of heat exchanger components 42
One control valve 44, opens the second control valve 45 positioned at water spray grid 43 side, and desulfurization wastewater enters water spray grid 43 and is sprayed onto
Heat exchanger components 42 are to clean heat exchanger components 42.When the operation troubles of desulfurizer 1 or too high high-temperature flue-gas, open simultaneously
First control valve 44 and the second control valve 45, so that heat exchanger components 42 and water spray grid 43 are run simultaneously, realize simultaneously to high temperature
Flue gas carries out spray cooling and heat exchange cools.
Whole process cycles process, realizes desulfurization wastewater zero-emission, and make desulfurization wastewater by multipurpose handling process
Recycling, secondary pollution is not produced, had a good application prospect.
It will be appreciated by those skilled in the art that the embodiment of the present utility model shown in foregoing description and accompanying drawing is only made
For citing, the utility model is not intended to limit.The purpose of this utility model completely and effectively realizes.Work(of the present utility model
It can show and illustrated in embodiment with structural principle, in the case of without departing from the principle, implementation of the present utility model
Mode can have any deformation and modification.
Claims (6)
- A kind of 1. desulfurization wastewater treatment system, it is characterised in that including：Desulfurizer；Waste-water vortex device, is communicated in the desulfurizer, and the waste-water vortex device carries out separation of solid and liquid to desulfurization wastewater；Sand Filtration System, is communicated in the waste-water vortex device, and the Sand Filtration System filters to desulfurization wastewater；Chimney flue type heat exchanger, it is communicated in the Sand Filtration System and positioned at the gas approach of the desulfurizer, desulfurization wastewater is in institute State in chimney flue type heat exchanger and exchanged heat with high-temperature flue gas；Supersonic atomizer, it is communicated in chimney flue type heat exchanger and there is nozzle, the supersonic atomizer is to desulfurization wastewater Atomization process is carried out to form droplet；Deduster, has an inlet flue duct, the nozzle of the supersonic atomizer be installed in the inlet flue duct of the deduster with The desulfurization wastewater after atomization is set to be sprayed onto the inlet flue duct of the deduster, the desulfurization wastewater of atomization is dried and analysed by high-temperature flue gas Go out inorganic salt particle, inorganic salt particle enters the deduster and is removed.
- 2. desulfurization wastewater treatment system according to claim 1, it is characterised in that the Sand Filtration System includes filtration system And backwashing system, the filtration system are used to filter desulfurization wastewater, the backwashing system is used to backwash.
- 3. desulfurization wastewater treatment system according to claim 1, it is characterised in that the chimney flue type heat exchanger includes water inlet Pipe, heat exchanger components and water spray grid, the water inlet pipe, the heat exchanger components and the water spray grid three interconnect, The heat exchanger components are duct type heat exchanger components, and the water spray grid is located at the side of the heat exchanger components, the water spray grid Towards and be directed at the heat exchanger components.
- 4. desulfurization wastewater treatment system according to claim 3, it is characterised in that the chimney flue type heat exchanger further wraps The first control valve and the second control valve are included, first control valve is connected between the water inlet pipe and the heat exchanger components, institute The second control valve is stated to be connected between the water inlet pipe and the water spray grid.
- 5. desulfurization wastewater treatment system according to claim 4, it is characterised in that the desulfurization wastewater treatment system enters one Step include can pressurizing delivery pump, it is described can pressurizing delivery pump be connected to the waste-water vortex device and the chimney flue type heat exchanger it Between, it is described can pressurizing delivery pump there is function of increasing pressure.
- 6. desulfurization wastewater treatment system according to claim 1, it is characterised in that the deduster is communicated in the desulfurization Device, desulfurization wastewater purify through removing inorganic salt particle and to form water vapour and be back to the desulfurizer.
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| CN201720652488.5U CN207047042U (en) | 2017-06-06 | 2017-06-06 | Desulfurization wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107226571A (en) * | 2017-06-06 | 2017-10-03 | 李宜立 | Desulfurization wastewater treatment system and method for treating desulfurized wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226571A (en) * | 2017-06-06 | 2017-10-03 | 李宜立 | Desulfurization wastewater treatment system and method for treating desulfurized wastewater |
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Effective date of registration: 20231117 Address after: No. 1918, Cuntong Road, Dongxiao Street, Jindong District, Jinhua, Zhejiang Province 321000 (self declaration) Patentee after: ZHEJIANG DOWAY ADVANCED TECHNOLOGY Co.,Ltd. Address before: Room 301, unit 7, 132 Bei'an street, Daoli District, Harbin City, Heilongjiang Province Patentee before: Li Yili Patentee before: Yang Junwen |
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