CN107140777A - A kind of desulfurization wastewater zero discharge treatment device and its processing method - Google Patents

A kind of desulfurization wastewater zero discharge treatment device and its processing method Download PDF

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Publication number
CN107140777A
CN107140777A CN201710497832.2A CN201710497832A CN107140777A CN 107140777 A CN107140777 A CN 107140777A CN 201710497832 A CN201710497832 A CN 201710497832A CN 107140777 A CN107140777 A CN 107140777A
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water
desulfurization wastewater
discharge treatment
zero discharge
treatment device
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CN201710497832.2A
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Inventor
张荣初
王敬福
杨庆宇
邹怡然
舒忠平
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NANJING CHANGRONG ACOUSTIC Co Ltd
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NANJING CHANGRONG ACOUSTIC Co Ltd
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Priority to CN201710497832.2A priority Critical patent/CN107140777A/en
Publication of CN107140777A publication Critical patent/CN107140777A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/01Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/014Addition of water; Heat exchange, e.g. by condensation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/10Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
    • C02F1/12Spray evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/16Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a kind of desulfurization wastewater zero discharge treatment device and its processing method, device connects electrostatic precipitator including air preheater by connecting pipe, electrostatic precipitator connects the entrance of wet desulfuration tower, atomising device and sound wave generating device have been sequentially arranged on the wastewater outlet connection sedimentation basin of wet desulfuration tower, connecting pipe.Method is originated after being precipitated for the waste water of wet desulfuration tower by sedimentation basin using waste water as spray water, the rapid evaporating completely of moisture in waste water after being atomized by high-temperature flue gas, crystallization salt in waste water is separated out, and smaller crystal fine grain is then separated under the sound wave debunching action of sound wave generating device and reaches electrostatic precipitator removing with flue gas.Device that the present invention is provided and its processing method are atomized with hyperfrequency, the discrete collaboration of Frequency Adjustable high sound strong sound wave solve by high temperature evaporation realize spray nozzle encrustation that the zero emission treatment of desulfured waste water of separation of solid and liquid is present block and flue in flying dust settle and the serious problems such as flue inner wall fouling.

Description

A kind of desulfurization wastewater zero discharge treatment device and its processing method
Technical field
The invention belongs to power plant desulfurization wastewater process field, and in particular to a kind of desulfurization wastewater zero discharge treatment device and its Processing method.
Background technology
With the progress and expanding economy of society, thermal power plant is to the pollution of atmospheric environment by the generally pass of people Note, therefore the influence for effectively reducing pollutant emission to improve to environment is that China's energy field sustainable development is faced Severe challenge.At present, existing flue gas desulfurization technique includes wet desulphurization and dry desulfurization etc..The wherein fortune of Wet Flue Gas Desulfurization Technique With the most extensive.Wet process of FGD is the technological process that current 85% or so large thermal power plant in the world is used.Wet flue gas Desulphurization system waste water is higher due to mercury, lead, nickel, arsenic and chromium content of beary metal, and the harm directly discharged is very big, general chemistry processing Method is again excessively complicated, and needs constantly addition chemicals, labor intensive.After another desulfurization wastewater chemical treatment method processing Waste water chlorion (there is no chemical agent to remove removing chloride at present) can not still be removed.Take general desulfuration waste water treatment process Waste water after processing is unable to dilution discharge according to relevant regulations, therefore can not comprehensively utilize.
The world today, water scarcity, if desulfurization wastewater is become resource circulation utilization using certain technique, will be one Part promote the well-being of mankind society thing.Conventional desulfurization waste water treatment process step is neutralized, flocculated, precipitating and outer row nothing more than.It is near several Many desulfuration waste water treatment process year newly developed, such as evaporate, reuse, the technique such as clarification, though this kind of technique can be to desulfurization wastewater Recycling have certain effect, but problem is relatively more, and as that need to newly increase, large number quipments, floor space are big, investment is big, technique stream Journey is complicated, equipment failure rate is high, operational effect is undesirable, dehydrating effect is not good, specific resistance to filtration is inconvenient, exist outside waste water Arrange phenomenon etc.., should by the industry for having a strong impact on various desulfuration waste water treatment process if these problems cannot be solved well With.
With country《Economizing energy law》、《Law on Environmental Protection》、《Water prevention and cure of pollution action plan》With corresponding with water, row The promulgation of water fees policy (water resources taxes, drainage fee, exceeded take), and《Power industry Eleventh Five-Year Plan water-saving planning》Deng regulation Progressively implementation, thermal power plant is used, displacement and water quality have strict index to limit.From the point of view of sustainable development, These targets are reached, implements depth and economizes on water and realize that waste water zero emission measure is imperative.
Desulfurization wastewater belongs in the class waste water of coal-burning power plant four class that dustiness is high, intractability is big.According to DL/T 5196 《Thermal power plant's Limestone-gypsum Wet Flue Gas Desulfurization Process waste water quality Con trolling index》Regulation, desulfurization wastewater can not using dilution method Reduce and discharged after pollutant concentration.Meanwhile, desulfurization wastewater contains the Cl of high concentration-, it is difficult to certain corrosivity directly Utilize.Therefore, the implementation of desulfurization wastewater zero-emission, has important practical significance.
The Chinese patent of Application No. 201110076844.0 discloses a kind of zero emission treatment of desulfured waste water, including Following steps:1) desulfurization wastewater after desulfurizing tower desulfurization is discharged into preliminary sedimentation tank, initial gross separation is passed through in preliminary sedimentation tank, will be separated The upper clear supernate gone out is transported in buffer pool through slurries pump;2) desulfurization wastewater in buffer pool is passed sequentially through into atomising device and quiet Electric cleaner;3) solid content larger waste water in preliminary sedimentation tank bottom is transported in sludge buffer pool, sludge buffer pool through sludge pump The larger waste water of solid content be transported to filter press through another sludge pump;4) by the waste water after filtering through slurries pumped back preliminary sedimentation tank In.
But, there are the following problems for this zero emission treatment of desulfured waste water:
(1) mist droplet particle size is larger (100-200 μm), causes nozzle choking problems to take place frequently.
(2) distance is evaporated, causes wastewater treatment capacity on the low side.
(3) effective measures without prevention in time and the thing sedimentation of solution flue endoparticle.
(4) effective measures without prevention in time and removing flue inner wall particulate matter fouling.
The content of the invention
It is an object of the invention to provide a kind of brand-new desulfurization wastewater zero to overcome above the deficiencies in the prior art Discharging processing device and its processing method, the device are assisted with hyperfrequency atomization plant, Frequency Adjustable high sound strong sound wave discrete device With solve by high temperature evaporation realize separation of solid and liquid zero emission treatment of desulfured waste water exist spray nozzle encrustation blocking and The serious problems such as flying dust sedimentation and flue inner wall fouling, are prevented effectively from boiler controller system caused by being blocked due to ash deposit and slag buildup in flue The relevant issues such as energy consumption increase, the passive blowing out of boiler controller system, realize energy-conserving and environment-protective and desulfurization wastewater zero-emission target comprehensively.Utilize The method technique that device provided above carries out desulfurization wastewater processing is simple, saves human input, it is not necessary to add any chemistry Medicine, but also fume afterheat is made full use of, realize desulfurization wastewater zero-emission.
Technical scheme is as follows:
A kind of desulfurization wastewater zero discharge treatment device, including air preheater connect electrostatic precipitator by connecting pipe, Electrostatic precipitator connects the entrance of wet desulfuration tower, the wastewater outlet connection sedimentation basin of wet desulfuration tower, wherein from air preheat Device is to being sequentially arranged atomising device and sound wave generating device on the connecting pipe of electrostatic precipitator.
Further, described desulfurization wastewater zero discharge treatment device, sedimentation basin feeds the water into atomization dress by delivery pump Put as spraying water source, atomising device includes air compressor machine, air accumulator and hyperfrequency atomizer, and wherein hyperfrequency atomizer is set It is placed in the inside of connecting pipe.
Further, described desulfurization wastewater zero discharge treatment device, the wastewater outlet connection dehydration dress of wet desulfuration tower Put, dehydration device connection desulfurization wastewater clear water reserviors, desulfurization wastewater clear water reserviors connection sedimentation basin.
Further, described desulfurization wastewater zero discharge treatment device, sound wave generating device is high frequency sound wave generator, low One or more of combinations in frequency sonic generator or Frequency Adjustable sonic generator.
Further, the water in described desulfurization wastewater zero discharge treatment device, sedimentation basin is pumped into mist by conveying Makeup distributes anti-block apparatus before putting by metering;Metering distributes pressure gauge, flowmeter, valve of the anti-block apparatus by being installed on pipeline Door composition, realizes the real-time monitoring to each bye-pass wastewater flow by pressure gauge, flowmeter, is realized by valve to each The regulation of bye-pass wastewater flow.
Further, described desulfurization wastewater zero discharge treatment device, hyperfrequency atomizer includes air inlet pipe, air inlet and blocked up Head, resonant cavity, water inlet pipe, current deflecting pipe and (operating) water nozzle;Air inlet plug is arranged inside the gas outlet end of air inlet pipe, with entering There is gap in the gas outlet end inwall of tracheae, form gas high pressure emission port;Resonant cavity is the structure with the cavity that caves in, altogether Shake chamber and set in the cavity mode relative with gas high pressure emission port of caving in and form gap between gas high pressure emission port;Enter Water pipe connects current deflecting pipe, and the water export end of current deflecting pipe connects (operating) water nozzle, and the water spray outlet of (operating) water nozzle is arranged at gas The adjacent position of body high pressure emission port.
Further, described desulfurization wastewater zero discharge treatment device, water export end and the water of current deflecting pipe spray Diffusing piece is additionally provided between mouth, diffusing piece is the part with diffusing hole.
Further, described desulfurization wastewater zero discharge treatment device, current deflecting pipe and (operating) water nozzle are placed on air inlet Guan Shang;Resonant cavity is oppositely arranged by the fix bar of connection below air inlet plug with gas high pressure emission port, and resonant cavity is socketed on In fix bar;Current deflecting pipe takes engagement thread to be connected with air inlet pipe;(operating) water nozzle takes engagement thread to connect with current deflecting pipe Connect;(operating) water nozzle takes engagement thread to be connected or be not connected to air inlet pipe;Resonant cavity takes engagement thread to be connected with fix bar.
The processing method of described desulfurization wastewater zero discharge treatment device, comprises the following steps:
Step 1, waste water is pumped into atomising device by conveying after the waste water of wet desulfuration tower is precipitated by sedimentation basin to make Originated for spray water, atomising device produces hyperfrequency water by the coordinative role of air compressor machine, air accumulator and hyperfrequency atomizer In mist air inlet preheater and the connecting pipe of electrostatic precipitator;
Step 2, by the high-temperature flue gas after air preheater during feeding electrostatic precipitator, in connecting pipe first By high-temperature flue gas by the rapid evaporating completely of moisture in waste water after atomization, the crystallization salt after cooling in waste water is separated out, then Smaller crystal fine grain is separated under the sound wave debunching action of sound wave generating device;
Step 3, crystal fine grain is reached after electrostatic precipitator removing together with other grits with flue gas, and cleaning flue gases enter wet method Desulfurizing tower is further processed.
Further, hyperfrequency atomizer in the processing method of described desulfurization wastewater zero discharge treatment device, step 1 Realize that Frequency Adjustable is atomized by adjusting the distance between air inlet plug and resonant cavity in spray process.
The present invention, which draws desulfurization wastewater, is connected to sedimentation basin, by the way that desulfurization wastewater is pumped into metering point by conveying after precipitation With anti-block apparatus, together with compressed air, after metering distribution anti-block apparatus reasonable distribution, sprayed by hyperfrequency atomizer To electrostatic precipitator gas approach.Waste water after atomization is rapid by the flue gas in electrostatic precipitator entrance connecting pipe Evaporation.The dissolubility salt in waste water crystallizes precipitation in evaporation process simultaneously, and with the ash in flue gas in electrostatic precipitator In be captured.The crystal salt that sound wave generating device sends sound wave controlled precipitation is in discrete state, it is to avoid flying dust in connecting pipe Particle is settled and flue inner wall fouling and clogging.Metering distribution anti-block apparatus, can in time monitor on-line, adjust entering for each spray gun The flow and pressure of liquid, gas, it is ensured that the safe operation of equipment.
Beneficial effect:
1st, the present invention very easily can carry out zero discharge treatment to desulfurization wastewater, and technique is simple, it is not necessary to use Any chemicals, saves manpower.
2nd, the present invention makes full use of fume afterheat, and the waste water of heavily contaminated is evaporated substantially, realizes separation of solid and liquid, and improve cigarette The humidity that gas enters before dust arrester, is conducive to improving the dust removing effects of dust arrester.
3rd, in existing desulfurization wastewater zero-discharge technology, the salinity crystal obtained by atomization, high temperature evaporation is realized solid After liquid separation, cause nozzle and flue inner wall ash deposit and slag buildup to block, cause the increase of boiler controller system energy consumption, passive blowing out etc. to be difficult to gram The problem of taking.In the present invention, the salinity crystal fine grain in waste water, the contaminant particles in flue gas are strong the high strong sound wave of Frequency Adjustable Under strong effect, constantly occurs discrete phenomena, such design can be prevented effectively from nozzle and flue inner wall fouling and clogging.
4th, system architecture of the invention is compact, and method implements simple, and can realize wastewater zero discharge truly, Not only environmentally friendly but also safety, with promotional value.
5th, the nozzle atomization particle diameter of the more traditional gas-liquid two-phase flow of hyperfrequency atomizer is smaller, and the uniformity more preferably, imitate by atomization Rate is higher, shortens evaporation time in flue, with anti-clogging advantage.
Brief description of the drawings
Fig. 1 is the desulfurization wastewater zero discharge treatment schematic device described in the embodiment of the present invention 1;
Fig. 2 is the desulfurization wastewater zero discharge treatment schematic device described in the embodiment of the present invention 2;
Fig. 3 is the hyperfrequency atomizer schematic diagram described in the embodiment of the present invention 2;
Fig. 4 is the hyperfrequency atomizer schematic diagram described in the embodiment of the present invention 3;
Fig. 5 is diffusing piece schematic diagram in the hyperfrequency atomizer described in the embodiment of the present invention 3;
In figure 1 above-Fig. 5,1 is air preheater, and 2 be electrostatic precipitator, and 3 be wet desulfuration tower, and 4 be sedimentation basin, and 5 are Atomising device, 51 be air inlet pipe, and 52 be air inlet plug, and 53 be resonant cavity, and 54 be water inlet pipe, and 55 be current deflecting pipe, and 56 be water Nozzle, 57 be diffusing piece, and 6 be sound wave generating device, and 7 be dehydration device, and 8 be desulfurization wastewater clear water reserviors, and 9 is anti-blocking for metering distribution Device.
Embodiment:
Embodiment 1
A kind of desulfurization wastewater zero discharge treatment device is present embodiments provided, as shown in figure 1, logical including air preheater 1 Connecting pipe connection electrostatic precipitator 2 is crossed, electrostatic precipitator 2 connects the entrance of wet desulfuration tower 3, the waste water of wet desulfuration tower 3 Outlet connection sedimentation basin 4, wherein from air preheater 1 to being sequentially arranged atomising device 5 on the connecting pipe of electrostatic precipitator 2 With sound wave generating device 6.Sound wave generating device 6 can be high frequency sound wave generator, low-frequency sound generator or Frequency Adjustable sound wave One or more of combinations in generator;Sedimentation basin 4 feeds the water into atomising device 5 by delivery pump and is used as spraying water source.
Apparatus above, which in use, first draws the desulfurization wastewater of wet desulfuration tower, is connected to sedimentation basin, passes through precipitation Waste water is pumped to atomising device 5 as atomization water source by conveying afterwards, the water after atomization is connected by electrostatic precipitator entrance Flue gas in pipeline evaporates rapidly.The dissolubility salt in waste water crystallizes precipitation in evaporation process simultaneously, and with flue gas Ash be captured together in electrostatic precipitator.The crystal salt that sound wave generating device 6 sends sound wave controlled precipitation is in discrete shape State, it is to avoid fly ash granule sedimentation and flue inner wall fouling and clogging in connecting pipe, the crystallization salt grain then separated out is through electrostatic precipitation Device 2 is removed.
Embodiment 2
The present embodiment improves for a kind of of embodiment 1, as shown in Fig. 2 the water in sedimentation basin 4 is pumped into atomization by conveying By metering distribution anti-block apparatus 9 before device 5;The wastewater outlet connection dehydration device 7 of wet desulfuration tower 3, dehydration device 7 is connected Desulfurization wastewater clear water reserviors 8, the connection sedimentation basin 4 of desulfurization wastewater clear water reserviors 8, atomising device 5 includes air compressor machine, air accumulator and hyperfrequency Atomizer, wherein hyperfrequency atomizer are arranged at the inside of connecting pipe;Hyperfrequency atomizer as shown in figure 3, including Air inlet pipe 51, air inlet plug 52, resonant cavity 53, water inlet pipe 54, current deflecting pipe 55 and (operating) water nozzle 56;Air inlet plug 52 is arranged at Inside the gas outlet end of air inlet pipe 51, there is gap with the gas outlet end inwall of air inlet pipe 51, form gas high pressure transmitting Mouthful;Resonant cavity 53 is the structure with the cavity that caves in, and resonant cavity 53 is in the cavity mode relative with gas high pressure emission port of caving in Set and form gap between gas high pressure emission port;The connection current deflecting of water inlet pipe 54 pipe 55, the water of current deflecting pipe 55 Flow export end connects (operating) water nozzle 56, and the water spray outlet of (operating) water nozzle 56 is arranged at the adjacent position of gas high pressure emission port.Metering point It is made up of, is realized by pressure gauge, flowmeter to each the pressure gauge, flowmeter, valve installed on pipeline with anti-block apparatus (9) The real-time monitoring of individual bye-pass wastewater flow, the regulation to each bye-pass wastewater flow is realized by valve.
The desulfurization wastewater zero discharge treatment device that the present embodiment is provided is set by hyperfrequency atomizer in atomising device 5 Put so that it can produce hyperfrequency spraying in use, drastically be subtracted by circulation area from air inlet pipe 51 using air-flow Launch after small gas high pressure emission port, gas compression and go out to form jet, can be by adjusting the stream of gas in air inlet pipe 51 Speed adjusts effluxvelocity, when jet velocity reaches velocity of sound, in gas high pressure emission port formation shock wave, and by being arranged at gas The resonant cavity 53 of body high pressure emission port relative position, when shock wave is in the cavity that caves in for entering resonant cavity 53, due to running into bluff body, Produce high pressure pulsation, the high pressure pulsation have certain frequency, that is, form high strong sound wave, when resonant cavity 53 relative to During the relative position regulation of gas high pressure emission port, the high strong sound wave of Frequency Adjustable is formed.Current from water inlet pipe 54 flow into when, from water Nozzle 56, which sprays, forms spraying, and this is sprayed at the high-strength sound wave effect lower moment that gas high pressure emission port sends and is torn, and crushes For particulate form, atomizing effect is improved, relative position regulation of the resonant cavity 53 relative to gas high pressure emission port can be formed can The high-strength atomizing effect of frequency modulation.
Embodiment 3
The present embodiment is the improvement on the basis of embodiment 2, as shown in figure 4, the current deflecting pipe of hyperfrequency atomizer 55 and (operating) water nozzle 56 be placed in air inlet pipe 51;Fix bar and gas high pressure that resonant cavity 53 passes through the connection of the lower section of air inlet plug 52 Emission port is oppositely arranged, and resonant cavity 53 is socketed in fix bar;Current deflecting pipe 55 takes engagement thread to be connected with air inlet pipe 51; (operating) water nozzle 56 takes engagement thread to be connected with current deflecting pipe 55;(operating) water nozzle 56 and air inlet pipe 51 take engagement thread to be connected or not Connection;Resonant cavity 53 takes engagement thread to be connected with fix bar.Between the water export end of current deflecting pipe 55 and (operating) water nozzle 56 Diffusing piece 57 is additionally provided with, diffusing piece 57 is the part (such as Fig. 5) with diffusing hole, and the water that enter (operating) water nozzle 56 can be played Diffusing is acted on, and improves the homogeneity of spraying.
The processing method for the desulfurization wastewater zero discharge treatment device that the present embodiment is provided, comprises the following steps:
Step 1, waste water is pumped into atomising device by conveying after the waste water of wet desulfuration tower is precipitated by sedimentation basin to make Originated for spray water, atomising device produces hyperfrequency water by the coordinative role of air compressor machine, air accumulator and hyperfrequency atomizer In mist air inlet preheater and the connecting pipe of electrostatic precipitator;
Step 2, by the high-temperature flue gas after air preheater during feeding electrostatic precipitator, in connecting pipe first By high-temperature flue gas by the rapid evaporating completely of moisture in waste water after atomization, the crystallization salt after cooling in waste water is separated out, then Smaller crystal fine grain is separated under the sound wave debunching action of sound wave generating device;
Step 3, crystal fine grain is reached after electrostatic precipitator removing together with other grits with flue gas, and cleaning flue gases enter wet method Desulfurizing tower is further processed.
Desulfurization wastewater zero discharge treatment device and its processing method that the present invention is provided are purified rear straight using desulfurization wastewater Connect as atomization water source, produce the high-strength atomizing effect of Frequency Adjustable using hyperfrequency atomizer, flashed by high temperature, hyperfrequency mist Change and sound wave debunching action separate crystallization salt and harmful ion in desulfurization wastewater well, realize desulfurization wastewater zero-emission Put.

Claims (10)

1. a kind of desulfurization wastewater zero discharge treatment device, it is characterised in that including air preheater(1)Connected by connecting pipe Electrostatic precipitator(2), electrostatic precipitator(2)Connect wet desulfuration tower(3)Entrance, wet desulfuration tower(3)Wastewater outlet connect Connect sedimentation basin(4), wherein from air preheater(1)To electrostatic precipitator(2)Connecting pipe on be sequentially arranged atomising device (5)And sound wave generating device(6).
2. desulfurization wastewater zero discharge treatment device according to claim 1, it is characterised in that sedimentation basin(4)Pass through conveying Pump feeds the water into atomising device(5)It is used as spraying water source, atomising device(5)It is atomized and sprays including air compressor machine, air accumulator and hyperfrequency Mouth, wherein hyperfrequency atomizer are arranged at the inside of connecting pipe.
3. desulfurization wastewater zero discharge treatment device according to claim 1, it is characterised in that wet desulfuration tower(3)It is useless Water out connects dehydration device(7), dehydration device(7)Connect desulfurization wastewater clear water reserviors(8), desulfurization wastewater clear water reserviors(8)Connection Sedimentation basin(4).
4. desulfurization wastewater zero discharge treatment device according to claim 1, it is characterised in that sound wave generating device(6)For One or more of combinations in high frequency sound wave generator, low-frequency sound generator or Frequency Adjustable sonic generator.
5. desulfurization wastewater zero discharge treatment device according to claim 2, it is characterised in that sedimentation basin(4)In water lead to Cross conveying and be pumped into atomising device(5)It is preceding to distribute anti-block apparatus by metering(9);Metering distribution anti-block apparatus(9)By in pipeline Pressure gauge, flowmeter, the valve composition of upper installation, the reality to each bye-pass wastewater flow is realized by pressure gauge, flowmeter When monitor, regulation to each bye-pass wastewater flow is realized by valve.
6. desulfurization wastewater zero discharge treatment device according to claim 2, it is characterised in that hyperfrequency atomizer includes Air inlet pipe(51), air inlet plug(52), resonant cavity(53), water inlet pipe(54), current deflecting pipe(55)And (operating) water nozzle(56);Air inlet Plug(52)It is arranged at air inlet pipe(51)Gas outlet end inside, with air inlet pipe(51)Gas outlet end inwall exist between Gap, forms gas high pressure emission port;Resonant cavity(53)For the structure with the cavity that caves in, resonant cavity(53)With cavity and the gas of caving in The relative mode of body high pressure emission port sets and forms gap between gas high pressure emission port;Water inlet pipe(54)Connection current are led Xiang Guan(55), current deflecting pipe(55)Water export end connection (operating) water nozzle(56), (operating) water nozzle(56)Water spray outlet be arranged at The adjacent position of gas high pressure emission port.
7. desulfurization wastewater zero discharge treatment device according to claim 6, it is characterised in that current deflecting pipe(55)Water Flow export end and (operating) water nozzle(56)Between be additionally provided with diffusing piece(57), diffusing piece(57)For the part with diffusing hole.
8. desulfurization wastewater zero discharge treatment device according to claim 6, it is characterised in that current deflecting pipe(55)And water Nozzle(56)It is placed on air inlet pipe(51)On;Resonant cavity(53)Pass through air inlet plug(52)The fix bar of lower section connection and gas are high Pressure loophole is oppositely arranged, resonant cavity(53)It is socketed in fix bar;Current deflecting pipe(55)With air inlet pipe(51)Take screw thread Mode is connected;(operating) water nozzle(56)With current deflecting pipe(55)Engagement thread is taken to connect;(operating) water nozzle(56)With air inlet pipe(51)Adopt Engagement thread is taken to connect or be not connected to;Resonant cavity(53)Engagement thread is taken to be connected with fix bar.
9. the processing method of the desulfurization wastewater zero discharge treatment device described in claim 6, it is characterised in that including following step Suddenly:
Step 1, waste water is pumped into atomising device as spray by conveying after the waste water of wet desulfuration tower is precipitated by sedimentation basin Fog is originated, and atomising device produces hyperfrequency water smoke by the coordinative role of air compressor machine, air accumulator and hyperfrequency atomizer and entered In the connecting pipe for entering air preheater and electrostatic precipitator;
Step 2, first passed through by the high-temperature flue gas after air preheater during feeding electrostatic precipitator in connecting pipe High-temperature flue gas is by the rapid evaporating completely of moisture in waste water after atomization, and the crystallization salt after cooling in waste water is separated out, then in sound Smaller crystal fine grain is separated under the sound wave debunching action of wave generating device;
Step 3, crystal fine grain is reached after electrostatic precipitator removing together with other grits with flue gas, and cleaning flue gases enter wet desulphurization Tower is further processed.
10. the processing method of desulfurization wastewater zero discharge treatment device according to claim 9, it is characterised in that in step 1 Hyperfrequency atomizer realizes that Frequency Adjustable is atomized in spray process by adjusting the distance between air inlet plug and resonant cavity.
CN201710497832.2A 2017-06-27 2017-06-27 A kind of desulfurization wastewater zero discharge treatment device and its processing method Pending CN107140777A (en)

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CN108285188A (en) * 2018-03-13 2018-07-17 南京常荣声学股份有限公司 A kind of UTILIZATION OF VESIDUAL HEAT IN coordinated desulfurization wastewater zero discharge and the device and method for removing plume
CN110182880A (en) * 2019-05-21 2019-08-30 浙江浙能技术研究院有限公司 A kind of high slat-containing wastewater flue gas drying processing unit
CN110745895A (en) * 2019-10-29 2020-02-04 山东润扬环保设备有限公司 High-concentration desulfurization waste water flue evaporation treatment device
CN110937747A (en) * 2019-12-23 2020-03-31 大唐郓城发电有限公司 Desulfurization wastewater zero-discharge treatment device and method
CN113003786A (en) * 2021-03-26 2021-06-22 马鞍山钢铁股份有限公司 Combined treatment process for industrial gas dust removal water of CCPP unit
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CN108285188A (en) * 2018-03-13 2018-07-17 南京常荣声学股份有限公司 A kind of UTILIZATION OF VESIDUAL HEAT IN coordinated desulfurization wastewater zero discharge and the device and method for removing plume
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CN113003786A (en) * 2021-03-26 2021-06-22 马鞍山钢铁股份有限公司 Combined treatment process for industrial gas dust removal water of CCPP unit
CN113003786B (en) * 2021-03-26 2022-04-01 马鞍山钢铁股份有限公司 Combined treatment process for industrial gas dust removal water of CCPP unit

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