CN207694986U - A kind of smoke processing system based on chemical agglomeration and electric precipitation - Google Patents
A kind of smoke processing system based on chemical agglomeration and electric precipitation Download PDFInfo
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- CN207694986U CN207694986U CN201721893821.8U CN201721893821U CN207694986U CN 207694986 U CN207694986 U CN 207694986U CN 201721893821 U CN201721893821 U CN 201721893821U CN 207694986 U CN207694986 U CN 207694986U
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Abstract
The utility model provides a kind of smoke processing system based on chemical agglomeration and electric precipitation, unit is prepared including reunion liquid, atomized spray unit and electric precipitation unit, it includes emulsion tank that reunion liquid, which prepares unit, material-compound tank and blending tank, there is emulsion tank solid-state agglomerator mouth is added, first water filling port and emulsion outlet, there is material-compound tank liquid agglomerator mouth is added, emulsion entrance, second water filling port and mixture export, emulsion entrance and emulsion outlet, blending tank has entry to mixed solution, third water filling port and the outlet of reunion liquid, entry to mixed solution is connected to mixture export, the outlet of reunion liquid is connect by feeding pipe with the atomized spray unit being arranged on electric precipitation unit gas approach.The utility model is acted on by chemical agglomeration and electric precipitation unit associations, reunion liquid is sprayed into flue, the water capacity of flue gas is increased, fine particle in flue gas is made to grow up, it is removed convenient for electric precipitation unit, greatly improves the efficiency and stability of the smoke processing system dedusting.
Description
Technical field
The utility model belongs to fume treatment technical field, and in particular to a kind of flue gas based on chemical agglomeration and electric precipitation
Processing system.
Background technology
Coal is the main body energy in China, has reached 10.5 hundred million kilowatts by 2016 end of the year whole nation thermoelectricitys installation total amount, accounts for
The 63.6% of electric power installation total amount, and in the following quite a long time, supply of electric power of the China based on coal fired power generation
Pattern will not change.However the flue gas of coal-burning power plant's discharge is the important emission source of each pollutant in China's air, is surpassed
The SO of half2, NOx and inhalable particulate matter derive from coal-burning power plant, all kinds of waste water that power plant generates in addition, such as desulfurization wastewater
Deng process problem up to standard it is still more prominent.With the continuous improvement of people's environmental consciousness, the environment of coal-burning power plant in recent years
Problem is concerned, and under the overall background of China's energy-saving and emission-reduction, a series of laws and regulations are put into effect in succession is fired with limiting with specification
The blowdown behavior of coal-fired plant, also increasingly stringent for the pollution emission standard of coal-burning power plant, purpose is exactly to reduce combustion to greatest extent
Coal-fired plant's pollutant especially inhalable particulate matter, SO2, NOx, waste water etc. discharge capacity, it is final to realize flue gas minimum discharge
And wastewater zero discharge.
Inhalable particulate matter in the pollutant of coal-burning power plant's discharge（That is fine particle）Because grain size is smaller, difficult charged, difficult
The features such as wetting is difficult complete by the removal of the means such as traditional electrostatic precipitation, bag-type dust, and the concentration of flue gas emission mouth is still
Up to 30 mg/m3, it is far above 10 mg/m3Minimum discharge standard.Currently, fine particle is reunited, reinforcing dedusting technology is more
Effective processing method, flue gas particles concentration that treated are better than national standard, can reach 5 mg/m3Below.Reunion dedusting
Technology controls the discharge of coal-fired fine particle by chemical agglomeration method, is not changing existing cleaner and parameter, is not increasing
Under the premise of large scale equipment, can On-line construction with installation, installation site flexibly, short construction period, do not influence power plant/cement plant
Normal operation and production；In reunion system operation, using industry water, non-wastewater discharge, non-secondary pollution.However chemical radicals
It is poly- to have higher dependence to deduster, if deduster is old or performance is poor, ideal effect may be not achieved, and it is normal
The cleaner reform high cost of rule.
In addition, the preparation of existing reunion liquid is all that solid-state agglomerator, liquid agglomerator and water are added in blending tank to stir
Mixing.But in solid-state agglomerator adition process, the vapor in tank, which can be assembled, to be condensed on quantitative barrel and blanking tube wall, Gu
State agglomerator, which encounters the partial coagulation water droplet, to be bonded on quantitative barrel and tremie pipe, and cutting stock precision is not only influenced, but also has stifled
Fill in the risk of tremie pipe.In addition, solid-state agglomerator powder, which meets water electrode, easily forms spherical indissoluble object（Frequently referred to " flake "）：Work as solid-state
When agglomerator powder is added to the water, viscosity is very big after solid-state agglomerator powder chance water-solubleization on agglomerates surface, solid-state agglomerator
Powder is mutually bonded together, and is formed fluid-tight film and is wrapped in agglomerates surface, and then water is prevented to enter inside agglomerates, from
And form spherical indissoluble object.The density and mixed solution density difference of spherical indissoluble object are little, and spherical indissoluble object disperse is in solution
In, it is difficult to it removes, to influence the preparation and application of reunion liquid.
Utility model content
The purpose of the utility model is to overcome electrostatic precipitation dustfall efficiency in existing fume treatment is low, and chemical agglomeration is to removing
Dirt device has higher dependence, the problem of to conventional cleaner reform high cost.
For this purpose, the utility model provides a kind of smoke processing system based on chemical agglomeration and electric precipitation, including reunite
Liquid prepares unit, atomized spray unit and electric precipitation unit, and it includes emulsion tank, material-compound tank and mixing that the reunion liquid, which prepares unit,
Tank, there is the emulsion tank solid-state agglomerator mouth, the first water filling port and emulsion outlet, the material-compound tank is added has liquid group
Mouth, emulsion entrance, the second water filling port and mixture export, the breast of the emulsion entrance and the emulsion tank is added in poly- agent
Change liquid outlet, the blending tank have entry to mixed solution, third water filling port and reunion liquid outlet, the entry to mixed solution with
The mixture export of the material-compound tank is connected to, and blender is equipped in the emulsion tank, material-compound tank and blending tank；The blending tank
Reunion liquid outlet connect with the atomized spray unit being arranged on electric precipitation unit gas approach by feeding pipe.
As one of embodiment, the atomized spray unit includes high-pressure pump and spray gun, and the high-pressure pump is arranged described
On feeding pipe between blending tank and electric precipitation unit, the feeding pipe is equipped with first flowmeter and solenoid valve, described
Spray gun is arranged on electric precipitation unit gas approach.
As one of embodiment, the electric precipitation unit includes shell, the sun being distributed equipped with multiple parallel equidistants in shell
Pole plate, two neighboring anode plate center line are equipped with multiple cathode lines, and the end of each anode plate is solid by support frame
There is auxiliary to gather dust net surely.
As one of embodiment, it is described auxiliary gather dust net be U-shaped or W type structures, the support frame include adsorption plate and
Two reinforcing ribs, the adsorption plate are arranged on the axis for assisting gathering dust net, and one end of adsorption plate and the anode plate
Connection, the other end gathers dust with the auxiliary nets connection, and one end of two reinforcing ribs is fixed on the adsorption plate and anode plate
Junction, the other end with it is described auxiliary gather dust net open end side wall connect.
As one of embodiment, gather dust each side of net of the auxiliary is equipped with filter screen for filtering dust, and described
From top to bottom aperture is gradually reduced filter screen.
As one of embodiment, the solid-state agglomerator of the emulsion tank is added on mouth through the external storage bin hopper of blanking pipeline,
Vibrating motor is equipped in the storage bin hopper, the tremie pipe road is equipped with hopper and is respectively in the hopper along stream direction
Two switching control valves of both sides.
As one of embodiment, multiple blanking pipelines of the mouth by parallel arrangement are added in the solid-state agglomerator of the emulsion tank
Storage bin hopper is connected, each tremie pipe road sets there are one hopper and is respectively in the hopper both sides along stream direction
Two switching control valves.
As one of embodiment, rotatory feeder valve is equipped between the emulsion tank and storage bin hopper, the rotatory feeder valve
Outlet end is added mouth by feeder sleeve and the solid-state agglomerator and is connected to, the outlet end of each blanking pipeline with the rotation
The arrival end of feed valve is connected to.
As one of embodiment, it is disposed with above the material-compound tank and the liquid material that mouth is connected to is added with the liquid agglomerator
Tank, the liquid tank is interior to be equipped with the first liquid level sensor, and the liquid tank is connected with fluid infusion bucket, and the fluid infusion bucket passes through liquid supplementation pipe
Road is connect with the liquid tank, and the kinetic pump with the first liquid level sensor interlocked control is equipped in the liquid supplementation channel.
As one of embodiment, the second liquid level sensor and second are equipped in the emulsion tank, material-compound tank and blending tank
Flowmeter.
Compared with prior art, the beneficial effects of the utility model：
(1) this smoke processing system based on chemical agglomeration and electric precipitation provided by the utility model passes through chemical agglomeration
With the electric precipitation unit associations effect for the net that gathers dust with auxiliary, reunion liquid is sprayed into flue, the water capacity of flue gas is increased, makes flue gas
Middle fine particle is grown up, and is removed convenient for electric precipitation unit, while being gathered dust the secondary trapping of net by auxiliary, and dust concentration is being reduced
On the basis of reduce reentrainment of dust and inverse corona influence, greatly improve the efficiency and stabilization of the smoke processing system dedusting
Property, compared to traditional renovation and improving is carried out to electric precipitator, there is excellent cost performance.
(2) in advance by solid-state in this smoke processing system based on chemical agglomeration and electric precipitation provided by the utility model
Agglomerator is mixed with water and is emulsified, then is extracted emulsion and be mixed to get concentration reunion liquid with liquid agglomerator, then in blending tank
In to concentration reunion liquid be diluted to obtain required reunion liquid, can be to avoid reunion liquid process for preparation existing in the prior art
Middle solid-state agglomerator powder meets the problem of water forms spherical indissoluble object and influences preparation and the using effect of reunion liquid.
(3) by making in advance in this smoke processing system based on chemical agglomeration and electric precipitation provided by the utility model
Standby concentration reunion liquid, then the reunion liquid being suitable for the application of is prepared to concentrating the dilution of reunion liquid, convenient for adding for control agglomerator
The concentration of reunion liquid for entering amount and finally obtaining；Moreover, first prepare concentrate, the reunion liquid of prepared and diluted again when needed,
The storage of concentrate does not need the storage device of big volume, can save equipment cost and space, and convenient for management.
The utility model is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the structural representation of the smoke processing system based on chemical agglomeration and electric precipitation in the utility model embodiment
Figure；
Fig. 2 is the structural schematic diagram of electric precipitation unit in the utility model embodiment；
Fig. 3 is that auxiliary is gathered dust the structural schematic diagram of net in the utility model embodiment；
Fig. 4 is a kind of embodiment structure schematic diagram of emulsion tank dispensing in the utility model embodiment；
Fig. 5 is the structural schematic diagram for the desulfurization wastewater organization of supply that the utility model embodiment provides.
Reference sign：1, emulsion tank；2, material-compound tank；3, blending tank；4, blanking pipeline；5, hopper；6, switching control
Valve processed；7, storage bin hopper；8, flue；9, spray gun；10, electric precipitation unit；11, shell；12, anode plate；13, cathode line；14, it assists
Gather dust net；15, adsorption plate；16, reinforcing rib；17, rotatory feeder valve；18, collecting pit；19, first order sedimentation basin；20, the second level
Sedimentation basin；21, third level sedimentation basin；22, clear water reserviors；23, control valve；24, ultrafiltration membrane；25, water supply pump；26, water outlet control
Valve processed；27, fresh water collecting pond；28, diaphragm pump；29, filter；30, sludge concentration tank.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The all other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that term "center", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
Novel limitation.
Term " first ", " second " are used for description purposes only, be not understood to indicate or imply relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more this feature；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
As shown in Figure 1, a kind of smoke processing system based on chemical agglomeration and electric precipitation is present embodiments provided, including group
Poly- liquid prepares unit, atomized spray unit and electric precipitation unit 10, and it includes emulsion tank 1, material-compound tank 2 that the reunion liquid, which prepares unit,
With blending tank 3, there is the emulsion tank 1 solid-state agglomerator mouth, the first water filling port and emulsion outlet, the material-compound tank 2 is added
Be added mouth, emulsion entrance, the second water filling port and mixture export with liquid agglomerator, the emulsion entrance with it is described
The emulsion outlet of emulsion tank 1, the blending tank 3 has entry to mixed solution, third water filling port and the outlet of reunion liquid, described
Entry to mixed solution is connected to the mixture export of the material-compound tank 2, is equipped in the emulsion tank 1, material-compound tank 2 and blending tank 3
Blender；The reunion liquid outlet of the blending tank 3 passes through feeding pipe and the mist being arranged on 10 gas approach 8 of electric precipitation unit
Change injection unit connection.Unit is prepared by reunion liquid in the present embodiment and prepares reunion liquid, prepared reunion liquid passes through atomization
It is injected into spray pattern in flue 8 by injection unit, increases the water capacity of flue gas, and fine particle in flue gas is made to grow up,
Subsequent flue gas enters the particulate matter in the absorption flue gas of electric precipitation unit 10, is acted on by chemical agglomeration and electric precipitation unit associations,
The efficiency and stability for greatly improving the smoke processing system dedusting change compared to traditional effect that puies forward is carried out to electric precipitator
It makes, there is excellent cost performance.
The embodiment of refinement, the atomized spray unit include high-pressure pump and spray gun 9, and the high-pressure pump is arranged described
On feeding pipe between blending tank 3 and electric precipitation unit 10, the feeding pipe is equipped with first flowmeter and solenoid valve, institute
It states spray gun 9 to be arranged on 10 gas approach 8 of electric precipitation unit, the spray gun 9 is air-liquid two-phase spray gun, by high-pressure pump by institute
It is mixed to state the flue gas that prepared reunion liquid is sprayed into flue 8, with flue 8 by the nozzle of spray gun 9 in spray pattern in blending tank 3
It closes, increases smoke moisture, while the fine particle in flue gas being made to be agglomerated into large particle, it is right to improve follow-up electric precipitation unit 10
The efficiency of dust collection of flue gas.
As shown in Figures 2 and 3, the electric precipitation unit 10 includes shell 11, and multiple parallel equidistants point are equipped in shell 11
The anode plate 12 of cloth, 12 center line of two neighboring anode plate are equipped with multiple cathode lines 13, the end of each anode plate 12
Auxiliary is fixed with by support frame to gather dust net 14, the auxiliary net 14 that gathers dust is rigidly connected with anode plate 12, with anode plate
12 rappings together, the flue gas after being humidified by reunion liquid gather dust in anode plate 12 and auxiliary and form " muffin " on net 14, and reduction is shaken
Reentrainment of dust caused by beating.The auxiliary net 14 that gathers dust is U-shaped or W type structures, and U-shaped or W types auxiliary is gathered dust 14 open end of net
Face electric field air current flow direction, ash-laden gas are filtered from the gather dust open end of net 14 of auxiliary；The support frame
Including adsorption plate 15 and two reinforcing ribs 16, the adsorption plate 16 is arranged on the axis for assisting gathering dust net 14, and adsorbs
One end of plate 15 is connect with the anode plate 12, and the other end is connect with the auxiliary net 4 that gathers dust, and the one of two reinforcing ribs 16
End is fixed on the junction of the adsorption plate 15 and anode plate 12, and the other end and the auxiliary are gathered dust the side wall company of 14 open end of net
It connects, the auxiliary net 14 that gathers dust is supported by the adsorption plate 15 of support frame and reinforcing rib 16.It is described to assist the net 14 that gathers dust
Each side is equipped with filter screen for filtering dust, since dust settles under the effect of gravity in flue gas, filter screen from top to
Lower part dust concentration gradually increases, thus the filter screen is designed as aperture from top to bottom and is gradually reduced, and increases auxiliary and gathers dust
The dust collection effect of net 14 accordingly also increases the specific collection area of electric precipitation unit 10, to reducing reentrainment of dust significant effect.
In above-mentioned reunion liquid prepares unit, the emulsion outlet of the emulsion tank 1 is preferably set under emulsion tank 1
Portion/bottom；The emulsion, which is exported, to be connected between the emulsion entrance of material-compound tank 2 by pipeline, and the power such as concentrating pump can be passed through
Emulsion in emulsion tank 1 is pumped into material-compound tank 2 by equipment.Lead to specifically, the solid-state agglomerator of the emulsion tank 1 is added on mouth
Cross 4 external storage bin hopper 7 of blanking pipeline, be equipped with vibrating motor in the storage bin hopper 7, the blanking pipeline 4 be equipped with hopper 5 and
Two switching control valves 6 of 5 both sides of the hopper are respectively in along stream direction；Reunite adding solid-state to the emulsion tank 1
Agent process is as follows：Vibrating motor is opened on storage bin hopper 7, and the switching control valve 6 of 5 top of hopper is opened, the solid-state in storage bin hopper 7
Agglomerator powder falls into hopper 5；Vibrating motor is closed after 30s, the switching control valve 6 of 5 top of hopper is closed, is then turned on
The switching control valve 6 of the lower section of hopper 5, solid-state agglomerator powder fall into emulsion tank 1, hopper 5 and two switching control valves 6 it
Between volume fix, ensure that each blanking solid-state agglomerator weight is fixed.It is added to the emulsion tank 1 as solid-state agglomerator
Another embodiment, as shown in figure 4, multiple blankings of the mouth by parallel arrangement are added in the solid-state agglomerator of the emulsion tank 1
Pipeline 4 connects storage bin hopper 7, is set on each blanking pipeline 4 there are one hopper 5 and is respectively in the metering along stream direction
Cylinder 5 both sides two switching control valves, multiple blanking pipelines 4 realize alternately switching charging by way of, when need wherein one
When the input charging of a blanking pipeline 4, first open each switching control valve on the blanking pipeline 4 to be put into, when the blanking pipeline 4 just
Often when charging, each switching control valve on the blanking pipeline 4 to feed before this, the side of this alternately switching charging are turned off
Formula, it is ensured that charging does not stop, and is effectively prevented water vapour and enters in hopper 5 and storage bin hopper 7, water recovery is avoided to count
Graduated cylinder 5 and storage bin hopper 7 and cause solid-state agglomerator bond, ensure cutting stock precision.It is further preferred that the emulsion tank 1 and storage
Rotatory feeder valve 17 is equipped between hopper 7, the outlet end of the rotatory feeder valve 17 passes through feeder sleeve and the solid-state agglomerator
Mouth connection is added, the outlet end of each blanking pipeline 4 is connected to the arrival end of the rotatory feeder valve 17, using the rotation
On the one hand feed valve 17 can uniformly, be quantitatively fed into emulsion tank 1, on the other hand, the air-tightness of rotatory feeder valve 17 compared with
It is good, the effect of steam-preventing uplink can be played.
It is preferably the top/top for being set to above-mentioned material-compound tank 2 that mouth, which is added, in the liquid agglomerator of the material-compound tank 2, is used for
Liquid agglomerator is added, accordingly, arranges that liquid tank, the liquid tank are reunited by pipeline and the liquid above the material-compound tank 2
Mouth connection is added in agent；It is equipped with the first liquid level sensor preferably in the liquid tank, liquid is detected by first liquid level sensor
Liquid level in batch can, to control the addition of liquid agglomerator.Further, above-mentioned liquid tank is connected with fluid infusion bucket,
The fluid infusion bucket is connect by liquid supplementation channel with the liquid tank, is equipped with and first level sensing in the liquid supplementation channel
The kinetic pump of device interlocked control；Liquid tank completes primary charging, which detects that liquid level declines in liquid tank,
Liquid agglomerator is extracted automatically from fluid infusion bucket with the kinetic pump of its interlocked control, and liquid tank is made to be restored to the liquid level before charging
Afterwards, kinetic pump is automatically stopped work.
The mixture export of the material-compound tank 2 is preferably the lower part/bottom for being set to material-compound tank；The mixture export with it is upper
It states and is connected by pipeline between the entry to mixed solution of blending tank 3, it can be by power-equipments such as concentrating pumps by the mixing in material-compound tank 2
Liquid is pumped into blending tank 3.As shown in Figure 1, above-mentioned emulsion tank 1, material-compound tank 2 and blending tank 3 can share a set of water source, i.e. the first note
The mouth of a river, the second water filling port and third water filling port are connected to same feed pipe.
Reunion liquid provided in this embodiment prepares unit, mixes solid-state agglomerator with water emulsify in advance, then extract
Emulsion is mixed to get concentration reunion liquid with liquid agglomerator, then is diluted to obtain institute to concentration reunion liquid in blending tank 3
The reunion liquid needed can be formed spherical to avoid solid-state agglomerator powder chance water in reunion liquid process for preparation existing in the prior art
Indissoluble object and the problem of influence preparation and the using effect of reunion liquid；Simultaneously by previously prepared concentration reunion liquid, then to concentration
Reunion liquid dilutes and prepares the reunion liquid being suitable for the application of, convenient for the reunion for controlling the addition of agglomerator and finally obtaining
The concentration of liquid；Moreover, first preparing concentrate, the reunion liquid of prepared and diluted, the storage of concentrate do not need great Rong again when needed
Long-pending storage device can save equipment cost and space, and convenient for management.
It is further preferred that being equipped with the second liquid level sensor and second in the emulsion tank 1, material-compound tank 2 and blending tank 3
Flowmeter realizes automatic blending by the liquid level in the second liquid level sensor and the corresponding tank body of second flowmeter detection.As this
Reunion liquid prepares the preferred embodiment of unit in the smoke processing system that embodiment provides, and the blending tank 3 also has desulfurization
Mouth is added in waste water, and the desulfurization wastewater is added mouth and is connected with desulfurization wastewater organization of supply.It is useless due to being incorporated desulfurization in reunion liquid
Water, the inorganic salts brought into can dramatically increase the carrying capacity of flue gas particles in flue 8, and the highly charged particulate matter of large scale holds very much
It easily traps fixed by electric precipitation unit 10 and removes so that the concentration of emission of flue gas fine particle is less than 10 mg/m3, realize
The minimum discharge of fine particle, and the moisture in agglomerator drop also evaporates rapidly under the high temperature action of 8 flue gas of flue, utilizes
Inorganic salts, heavy metal ion etc. in the reunion liquid that desulfurization wastewater is prepared become crystal salt, and crystal salt enters electricity with large particle
Dust removing units 10 simultaneously remove and then realize the processing to desulfurization wastewater.I.e. desulfurization wastewater is become useful reunion by the present embodiment
Liquid preparation raw material, it is thus possible to which collaboration processing coal-burning power plant's fine particle and desulfurization wastewater avoid power plant and be transformed, repeat in batches
Negative effect caused by construction.Above-mentioned desulfurization wastewater organization of supply is illustrated below：
To ensure the using effect of reunion liquid, it is suitable for the preparation raw material for first handling desulfurization wastewater and being re-used as reunion liquid afterwards.
Preferably, as shown in figure 5, the desulfurization wastewater organization of supply includes sequentially connected desulfurization wastewater pretreatment unit and membrane filtration
Processing unit, water outlet pipe and the desulfurization wastewater of the membrane filtration processing unit are added mouth and are connected to.Preferably, the film mistake
It includes ultrafiltration membrane 24 to filter processing unit, and water outlet control valve 26 is equipped in its water outlet pipe.Using ultrafiltration membrane 24 to de-
Sulphur waste water is filtered processing, can so that the impurity such as most particulate matter are effectively removed in desulfurization wastewater, after reduction
The probability that continuous atomized spray unit blocks, meanwhile, most salinity is retained in desulfurization wastewater, ensures that subsequent reunion removes
Dirt effect.Above-mentioned ultrafiltration membrane 24 is preferably that membrane filter system is lost in cross-flow, and the anti-pollution that can improve ultrafiltration membrane 24 blocks up ability；This reality
It applies in example, membrane aperture further preferably selects the membrane aperture of 40 microns in 35~50 micron ranges.Certainly, nanofiltration
The membrane filter systems such as film are also suitable in this present embodiment.
In the present embodiment, it is equipped with the structure of water outlet control valve 26 based on above-mentioned water outlet pipe, may be implemented pair
The backwash of the ultrafiltration membrane 24 specifically periodically or non-periodically carries out backwash to the ultrafiltration membrane 24, and back-washing method includes：It closes
The water outlet control valve 26 on the water outlet pipe is closed, pressurize backwash is carried out to the ultrafiltration membrane 24.Usually, surpass
It is provided with water supply pump 25 on the desulfurization wastewater pipeline of the influent side connection of filter membrane 24；The fresh water closed on water outlet pipe goes out
After mouth control valve 26, dilute side stops production water, and dilute side pipeline pressure rises, and the reversible dirt that 24 fenestra surface of ultrafiltration membrane is formed is stifled
It is loosened under the action of fresh water lateral pressure, and is detached from 24 surface of ultrafiltration membrane under the agitaion that above-mentioned water supply pump 25 generates（Into
One step can be also provided with control valve 23 on concentrated water outlet, at this point, the control valve 23 on concentrated water outlet is in the state opened）,
Finally ultrafiltration membrane 24 is left with concentrated water.
Preferably, above-mentioned backwash operation regularly is carried out to the ultrafiltration membrane 24, a preferred embodiment is：Ultrafiltration membrane 24
It often runs 5~6 minutes, the water outlet control valve 26 on water outlet pipe is closed 20~30 seconds, pressurize backwash is carried out, to protect
The high throughput of ultrafiltration membrane 24 is demonstrate,proved, the operation of subsequent ultrafiltration membrane 24 and backwash operation are alternately.Above-mentioned water supply pump 25 is preferably
Using big flow circulating pump.Based on above-mentioned 24 backwashing function of ultrafiltration membrane, the anti-pollution that can effectively improve ultrafiltration membrane 24 blocks up ability,
To improve the service life of the ultrafiltration membrane 24, extend its cleaning frequency.
Further, as shown in figure 5, above-mentioned pretreatment unit includes clear water reserviors 22 and at least level-one being sequentially connected in series precipitation
Pond, along desulfurization wastewater circulating direction, final stage sedimentation basin, the clear water reserviors 22 and the membrane filtration processing unit pass through desulfurization wastewater
Runner pipe is sequentially connected in series.Desulfurization wastewater is pre-processed by pretreatment unit, the work of membrane filtration processing unit can be reduced
Make load, improves the working efficiency and service life of membrane filtration processing unit.Between final stage sedimentation basin and membrane filtration processing unit
Clear water reserviors 22 are set, the work rhythm between pretreatment unit and membrane filtration processing unit can be coordinated, ensure pretreatment unit
Treatment effect.
Preferably, as shown in figure 5, the sedimentation basin has three-level, wherein first order sedimentation basin 19 is for precipitating desulfurization wastewater
In large particle；To milk of lime is added in second level sedimentation basin 20, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid（It is preferably suitable
Secondary addition）, to promote suspended particulate substance, heavy metal and at least part of sulfate radical in desulfurization wastewater to precipitate；It is heavy to the third level
Sodium carbonate softening agent is added in shallow lake pond 21, to promote the hardness species precipitate in desulfurization wastewater, which includes calcium, magnesium
Deng.
Further, as shown in figure 5, above-mentioned pretreatment unit is also configured with sludge concentration tank 30, sedimentation basin bottoms at different levels
It is equipped with mud discharging mouth, each mud discharging mouth is connect by sludge pipe with sludge concentration tank 30 respectively, each mud discharging mouth
Place is equipped with mud discharging valve.For ease of the collection and discharge of sludge, the bottom of above-mentioned each sedimentation basin is preferably V-shaped or presents
Narrow taper under width, above-mentioned mud discharging mouth are set to the bottom end of corresponding sedimentation basin.In addition, above-mentioned pretreatment unit can also wrap
Desulfurization wastewater collecting pit 18 is included, desulfurization wastewater raw water enters regulating water quality and water in the desulfurization wastewater collecting pit 18.
Desulfurization wastewater raw water enters 18 regulating water quality of desulfurization wastewater collecting pit and water, and water outlet enters first order sedimentation basin,
Large particle in desulfurization wastewater sinks to 19 bottom of first order sedimentation basin, and the muddy water containing particulate matter is periodically arranged through mud discharging valve
It puts to sludge concentration tank 30, supernatant enters second level sedimentation basin 20；By being added sequentially lime into second level sedimentation basin 20
Breast, sulfur-bearing recapture the medicaments such as agent, bodied ferric sulfate flocculation aid, promote suspended particulate substance, heavy metal and part in desulfurization wastewater
Sulfate radical becomes sludge, is deposited on the bottom of second level sedimentation basin 20, and muddy water is periodically emitted into sludge condensation through mud discharging valve
Pond, supernatant enter third level sedimentation basin 21；By adding sodium carbonate softening agent into third level sedimentation basin 21, in waste water
The hardness substance such as calcium, magnesium becomes sludge, is deposited on the bottom of third level sedimentation basin 21, and muddy water is periodically emitted into through mud discharging valve
Sludge concentration tank 30, supernatant enter clear water reserviors 22.It can be set in above-mentioned desulfurization wastewater collecting pit and sedimentation basin at different levels
Agitating paddle is set, to improve the sedimentation effect of desulfurization wastewater.It can be set on pipeline between clear water reserviors 22 and membrane filtration processing unit
Set above-mentioned big flow circulating pump.
As one of preferred embodiment, the concentrated water outlet is precipitated with described in the clear water reserviors 22 or in which level-one
Pond connects, i.e., the concentrated water obtained through ultrafiltration membrane 14 is back in clear water reserviors 22 or in which first stage precipitation tank and continues with, to realize
The zero-emission of desulfurization wastewater.Preferably, which connect with clear water reserviors 22.
It is further preferred that as shown in figure 5, the water outlet pipe is connected with fresh water collecting pond 27, the fresh water collecting
Pond 27 is connected to by fresh water runner pipe with the desulfurization wastewater entrance, along fresh water circulating direction on the fresh water runner pipe successively
Equipped with diaphragm pump 28 and filter 29.The quantitative conveying of desulfurization wastewater may be implemented using diaphragm pump 28, while preventing desulfurization useless
The corrosion that water pumps common material.Waste water in fresh water collecting pond 27 under the power of diaphragm pump 28 through filter 29 quantitatively into
Enter in blending tank 3；Above-mentioned filter 29 is further filtered fresh water, ensures the cleannes of reunion liquid, after further decreasing
The probability that continuous atomized spray unit blocks.
It is exemplified as above be only to the utility model for example, not constituting to the scope of protection of the utility model
Limitation, it is every to be belonged within the scope of protection of the utility model with the same or analogous design of the utility model.
Claims (10)
1. a kind of smoke processing system based on chemical agglomeration and electric precipitation, it is characterised in that：Unit, mist are prepared including reunion liquid
Change injection unit and electric precipitation unit (10), it includes emulsion tank (1), material-compound tank (2) and blending tank that the reunion liquid, which prepares unit,
(3), there is the emulsion tank (1) solid-state agglomerator mouth, the first water filling port and emulsion outlet, material-compound tank (2) tool is added
There is liquid agglomerator that mouth, emulsion entrance, the second water filling port and mixture export, the emulsion entrance and the breast is added
Change the emulsion outlet of tank (1), the blending tank (3) has entry to mixed solution, third water filling port and the outlet of reunion liquid, institute
It states entry to mixed solution to be connected to the mixture export of the material-compound tank (2), the emulsion tank (1), material-compound tank (2) and blending tank
(3) blender is equipped in；The reunion liquid outlet of the blending tank (3) is by feeding pipe with setting in electric precipitation unit (10)
Atomized spray unit connection on gas approach (8).
2. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The atomization
Injection unit includes high-pressure pump and spray gun (9), and the high-pressure pump is arranged between the blending tank (3) and electric precipitation unit (10)
Feeding pipe on, the feeding pipe is equipped with first flowmeter and solenoid valve, and the spray gun (9) is arranged in electric precipitation unit
(10) on gas approach (8).
3. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The electricity removes
Dirt unit (10) includes shell (11), the anode plate (12) being distributed equipped with multiple parallel equidistants in shell (11), two neighboring sun
Pole plate (12) center line is equipped with multiple cathode lines (13), and the end of each anode plate (12) is fixed with by support frame
Assist the net (14) that gathers dust.
4. the smoke processing system based on chemical agglomeration and electric precipitation as claimed in claim 3, it is characterised in that：The auxiliary
The net (14) that gathers dust is U-shaped or W type structures, and the support frame includes adsorption plate (15) and two reinforcing ribs (16), the absorption
Plate (15) setting is on the axis for assisting gathering dust net (14), and one end of adsorption plate (15) connects with the anode plate (12)
It connects, the other end is connect with the auxiliary net (14) that gathers dust, and one end of two reinforcing ribs (16) is fixed on the adsorption plate
(15) with the junction of anode plate (12), the other end connect with the side wall of net (14) open end of assisting gathering dust.
5. the smoke processing system based on chemical agglomeration and electric precipitation as claimed in claim 4, it is characterised in that：The auxiliary
Gather dust each side of net (14) is equipped with filter screen for filtering dust, and from top to bottom aperture is gradually reduced the filter screen.
6. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The emulsification
The solid-state agglomerator of tank (1) is added on mouth through blanking pipeline (4) external storage bin hopper (7), and the storage bin hopper (7) is interior to be equipped with vibration
Motor, the blanking pipeline (4) are equipped with hopper (5) and are respectively in two of the hopper (5) both sides along stream direction
Switching control valve (6).
7. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The emulsification
The solid-state agglomerator of tank (1) is added mouth and connects storage bin hopper (7) by multiple blanking pipelines (4) of parallel arrangement, it is each it is described under
Two switching controls of the hopper (5) both sides are set there are one hopper (5) and are respectively in along stream direction on expects pipe road (4)
Valve (6).
8. the smoke processing system based on chemical agglomeration and electric precipitation as claimed in claim 7, it is characterised in that：The emulsification
Be equipped with rotatory feeder valve (17) between tank (1) and storage bin hopper (7), the outlet end of the rotatory feeder valve (17) by feeder sleeve with
The solid-state agglomerator is added mouth connection, and the outlet end of each blanking pipeline (4) enters with the rotatory feeder valve (17)
The connection of mouth end.
9. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The dispensing
It is disposed with above tank (2) and the liquid tank that mouth is connected to is added with the liquid agglomerator, being equipped with the first liquid level in the liquid tank passes
Sensor, the liquid tank are connected with fluid infusion bucket, and the fluid infusion bucket is connect by liquid supplementation channel with the liquid tank, in the fluid infusion
Pipeline is equipped with the kinetic pump with the first liquid level sensor interlocked control.
10. the smoke processing system based on chemical agglomeration and electric precipitation as described in claim 1, it is characterised in that：The breast
Change in tank (1), material-compound tank (2) and blending tank (3) and is equipped with the second liquid level sensor and second flowmeter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080148A (en) * | 2017-12-29 | 2018-05-29 | 武汉天空蓝环保科技有限公司 | A kind of smoke processing system based on chemical agglomeration and electric precipitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080148A (en) * | 2017-12-29 | 2018-05-29 | 武汉天空蓝环保科技有限公司 | A kind of smoke processing system based on chemical agglomeration and electric precipitation |
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