CN207748979U - The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater - Google Patents
The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater Download PDFInfo
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- CN207748979U CN207748979U CN201721733139.2U CN201721733139U CN207748979U CN 207748979 U CN207748979 U CN 207748979U CN 201721733139 U CN201721733139 U CN 201721733139U CN 207748979 U CN207748979 U CN 207748979U
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Abstract
The utility model is related to a kind of systems of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, including desulfurization wastewater processing unit, reunion liquid to prepare unit and reunion processing unit；Desulfurization wastewater processing unit includes the filter mechanism for being filtered to desulfurization wastewater, and filter mechanism has water outlet pipe and concentrated water outlet；It includes mixed ingredients case that reunion liquid, which prepares unit, and there is mixed ingredients case reunion material inlet, desulfurization wastewater entrance and the outlet of reunion liquid, desulfurization wastewater entrance to be connected to water outlet pipe；Reunion processing unit includes the spray gun being inserted into flue, and spray gun is connected with reunion liquid for pipe, and reunion liquid is for pipe and reunion liquid outlet.Desulfurization wastewater is become useful reunion liquid preparation raw material by above system, is recycled the agglomerator effect of reunion liquid that the fine particle in flue gas is made to flocculate and is grown up, to the zero-emission of the synchronous minimum discharge and desulfurization wastewater for realizing coal-burning power plant's fine particle.
Description
Technical field
The utility model belongs to environmental technology field, is related to coal-burning power plant's pollutant minimum discharge control technology field, tool
Body is related to a kind of system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater.
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, electric power of the China based on coal fired power generation supplies
Pattern is answered 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,
The SO of super half2, NOx and inhalable particulate matter derive from coal-burning power plant, all kinds of waste water that power plant generates in addition, as desulfurization is useless
The process problem up to standard of water etc. is still more prominent.With the continuous improvement of people's environmental consciousness, the ring of coal-burning power plant in recent years
Border 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 to limit and specification
The blowdown behavior of coal-burning power plant, also increasingly stringent for the pollution emission standard of coal-burning power plant, purpose is exactly to reduce to greatest extent
Coal-burning power plant's pollutant especially inhalable particulate matter, SO2, NOx, waste water etc. discharge capacity, it is final to realize the ultralow row of flue gas
It puts and wastewater zero discharge.
Inhalable particulate matter (i.e. fine particle) and desulfurization wastewater are more intractable in the pollutant of coal-burning power plant's discharge
Two classes, wherein fine particle is because the features such as grain size is smaller, difficult charged, difficult wetting is difficult by traditional electrostatic precipitation, cloth bag
The removal of the means such as dedusting is complete, and the concentration of flue gas emission mouth is still up to 30mg/m3, it is far above 10mg/m3Minimum discharge mark
It is accurate；And desulfurization wastewater its salinity, suspended particulate substance, hardness content etc. after three traditional header process is still higher, it is several
No reuse value, has forbidden direct emission.
Newest issuing and implementation in 2017《Thermal power plant's prevention and cure of pollution possible technique guide》In explicitly pointed out coal-burning power plant
The necessity of fine particle minimum discharge and desulfurization wastewater zero-emission.For built coal-burning power plant, flue gas fine particle
Minimum discharge be transformed mainly by carrying out upgrading realization to original cleaner, fund input is larger, the duration is longer and related
Boiler must stop production, and be affected to the normal operation of power plant.The fine particle occurred in recent years, which is reunited, strengthens dedusting technology then
There is no this respect problems, and treated flue gas particles concentration is better than national standard, has reached 5mg/m3Below.And desulfurization
The zero-emission of waste water is mainly the means by evaporation, and the desulfurization wastewater that major pollutants are removed after pre-treatment is steamed
Hair crystallization, water become discharge of steam or reuse, and salinity becomes solid crystal recycling or sells, the technique difference desulfurization wastewater of evaporation
The effect of zero-emission is also different, wherein it is current public affairs to carry out the flue evaporation technique of desulfurization wastewater evaporation using power-plant flue gas waste heat
The most energy-efficient desulfurization wastewater zero-emission measure recognized, but because related supporting technology is still incomplete, the flue of desulfurization wastewater evaporates skill
Art still remains that problems are urgently to be resolved hurrily, as problem, potential etching problem etc. are blocked up in the dirt in evaporation process.In addition, for
Built coal-burning power plant, the minimum discharge of fine particle and the zero-emission transformation of desulfurization wastewater, which exist, repeats asking for construction
Topic, how by a kind of means in the synchronous minimum discharge and zero-emission for realizing fine particle and desulfurization wastewater compared in casual labourer's phase
It is the Main way of current research and Future Development.
Utility model content
The utility model embodiment is related to a kind of system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, at least
It can solve the segmental defect of the prior art.
The utility model embodiment is related to a kind of system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, including
Desulfurization wastewater processing unit, reunion liquid prepare unit and reunion processing unit；The desulfurization wastewater processing unit includes being used for
To the filter mechanism that desulfurization wastewater is filtered, the filter mechanism has water outlet pipe and concentrated water outlet；The reunion
It includes mixed ingredients case that liquid, which prepares unit, and the mixed ingredients case has reunion material inlet, desulfurization wastewater entrance and reunion
Liquid exports, and the desulfurization wastewater entrance is connected to the water outlet pipe；The reunion processing unit includes being inserted into flue
Spray gun, the spray gun is connected with reunion liquid for pipe, and the reunion liquid is for pipe and the reunion liquid outlet.
As one of embodiment, the filter mechanism includes ultrafiltration membrane, and the first control is equipped in the water outlet pipe
Valve.
As one of embodiment, the desulfurization wastewater processing unit further includes pre-treatment mechanism, pre-treatment mechanism packet
At least first stage precipitation tank for including clear water reserviors and being sequentially connected in series, along desulfurization wastewater circulating direction, sedimentation basin, the clear water described in final stage
Pond is sequentially connected in series with the filter mechanism by desulfurization wastewater runner pipe.
As one of embodiment, the concentrated water outlet is connect with sedimentation basin described in the clear water reserviors or in which level-one.
As one of embodiment, the sedimentation basin has three-level, including：
First order sedimentation basin for precipitating the large particle in desulfurization wastewater；
For milk of lime to be added, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid is to promote the suspended particulate in desulfurization wastewater
The second level sedimentation basin of object, heavy metal and at least part of sulfate radical precipitation；
For sodium carbonate softening agent to be added to promote the third level sedimentation basin of the hardness species precipitate in desulfurization wastewater.
As one of embodiment, the water outlet pipe is connected with fresh water collecting pond, and the fresh water collecting pond passes through fresh water
Runner pipe is connected to the desulfurization wastewater entrance, along fresh water circulating direction on the fresh water runner pipe successively be equipped with the first diaphragm
Pump and first filter.
As one of embodiment, along reunion liquid circulating direction in the reunion liquid for be equipped with successively on pipe the second diaphragm pump and
Second filter.
As one of embodiment, the spray gun is also configured with anti-blocking wiper mechanism.
As one of embodiment, the anti-blocking wiper mechanism includes the clear water that is connect with the spray gun for pipe, in described clear
Water is for pipe and the reunion liquid for being equipped with the second control valve on pipe.
The utility model embodiment at least has the advantages that：
The fresh water that desulfurization wastewater obtains after filter mechanism filtration treatment is sent into mixed ingredients case, is mixed with reunion material
Configure reunion liquid, then by spray gun by reunion liquid spray into flue in, agglomerator drop be quickly distributed with flue gas in flue and with
Fine particle in flue gas comes into full contact with, and fine particle is agglomerated into large particle through wetting and flocculation, while utilizing de-
Inorganic salts in the reunion agent solution that sulphur waste water is prepared can dramatically increase the carrying capacity of particulate matter, the highly charged particulate matter of large scale
It is easy to be trapped fixed and removed by deduster so that the concentration of emission of flue gas fine particle is less than 10mg/m3, realize thin
The minimum discharge of grain object, and the moisture in agglomerator drop also evaporates rapidly under the high temperature action of flue gas, utilizes desulfurization wastewater
Inorganic salts, heavy metal ion etc. in the reunion agent solution of preparation become crystal salt, and crystal salt enters deduster with large particle
And remove and then realize the zero-emission of desulfurization wastewater.Collaboration provided by the utility model handles coal-burning power plant's fine particle and takes off
Desulfurization wastewater is become useful reunion liquid preparation raw material by the system of sulphur waste water, and the agglomerator effect of reunion liquid is recycled to make cigarette
Fine particle flocculation in gas is grown up, to the zero-emission of the synchronous minimum discharge and desulfurization wastewater for realizing coal-burning power plant's fine particle
It puts, avoids power plant and be transformed in batches, repeat to negatively affect caused by constructing.This system technological process is simple and efficient and automates journey
Degree is high, has the characteristics that cost of investment is low, the transformation period is short, small to power plant's Influence of production, is suitable for the fire coal electricity of various scales
Factory's minimum discharge transformation.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater that the utility model embodiment one provides
Structural schematic diagram；
Fig. 2 is the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater that the utility model embodiment two provides
Structural schematic diagram.
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.
Embodiment one
Such as Fig. 1, what the utility model embodiment provided a kind of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater is
System, including desulfurization wastewater processing unit, reunion liquid prepare unit and reunion processing unit；The desulfurization wastewater processing unit packet
The filter mechanism for being filtered to desulfurization wastewater is included, the filter mechanism has water outlet pipe and concentrated water outlet；Institute
It includes mixed ingredients case 23 to state reunion liquid and prepare unit, and there is the mixed ingredients case 23 reunion material inlet, desulfurization wastewater to enter
Mouth and the outlet of reunion liquid, the desulfurization wastewater entrance are connected to the water outlet pipe；The reunion processing unit includes inserting
Enter to the spray gun 29 in flue 31, the spray gun 29 is connected with reunion liquid for pipe, and the reunion liquid goes out for pipe and the reunion liquid
Mouth connection.
The fresh water that desulfurization wastewater obtains after filter mechanism filtration treatment is sent into mixed ingredients case 23, mixed with reunion material
Configuration reunion liquid is closed, then is sprayed into reunion liquid in flue 31 by spray gun 29, agglomerator drop is quick with flue gas in flue 31
It is distributed and is come into full contact with the fine particle in flue gas, fine particle is agglomerated into large particle through wetting and flocculation, together
Inorganic salts in the reunion agent solution that Shi Liyong desulfurization wastewaters are prepared can dramatically increase the carrying capacity of particulate matter, and large scale is highly charged
Particulate matter be easy to trap fixed by deduster and remove so that the concentration of emission of flue gas fine particle is less than 10mg/m3, real
Show the minimum discharge of fine particle, and the moisture in agglomerator drop of the diameter less than 60 microns is also in the high temperature action of flue gas
Lower rapid evaporation becomes crystal salt using inorganic salts, the heavy metal ion etc. in the reunion agent solution of desulfurization wastewater preparation, crystallizes
Salt enters deduster with large particle and removes and then realize the zero-emission of desulfurization wastewater.
The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater provided in this embodiment, treated de-
Sulphur waste water becomes useful reunion liquid preparation raw material, recycles the agglomerator effect of reunion liquid that the fine particle in flue gas is made to flocculate
It grows up, to the zero-emission of the synchronous minimum discharge and desulfurization wastewater for realizing coal-burning power plant's fine particle, wherein flue gas fine grained
The concentration of emission of object is less than 10mg/m3, be up to state standards value, avoids power plant and is transformed, is repeated caused by constructing negatively in batches
It influences.Above system technological process is simple and efficient and high degree of automation, have cost of investment it is low, transformation the period it is short, to power plant
The features such as Influence of production is small is suitable for coal-burning power plant's minimum discharge transformation of various scales.
The system for connecting above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1, the filter mechanism
Including ultrafiltration membrane 6, the first control valve 8 is equipped in the water outlet pipe.Place is filtered to desulfurization wastewater using ultrafiltration membrane 6
Reason, can so that the impurity such as most particulate matter are effectively removed in desulfurization wastewater, reduce follow-up reunion spray gun 29 and block
Probability, meanwhile, most salinity is retained in desulfurization wastewater, ensures subsequent reunion dust removing effects.Above-mentioned ultrafiltration
Film 6 is preferably that membrane filter system is lost in cross-flow, and the anti-pollution that can improve ultrafiltration membrane 6 blocks up ability；In the present embodiment, membrane aperture is 35
In~50 micron ranges, the membrane aperture of 40 microns is further preferably selected.
In the present embodiment, it is equipped with the structure of the first control valve 8 based on above-mentioned water outlet pipe, may be implemented to the ultrafiltration
The backwash of film 6 specifically periodically or non-periodically carries out backwash to the ultrafiltration membrane 6, and back-washing method includes：It closes described light
First control valve 8 on water outlet pipe carries out pressurize backwash to the ultrafiltration membrane 6.Usually, the influent side of ultrafiltration membrane 6
It is provided with water supply pump 7 on the desulfurization wastewater pipeline of connection；After closing first control valve 8 on water outlet pipe, dilute side
Stop production water, dilute side pipeline pressure rises, and the reversible dirt that 6 fenestra surface of ultrafiltration membrane is formed is got lodged under the action of fresh water lateral pressure
It loosens, and being detached from 6 surface of ultrafiltration membrane under the agitaion that above-mentioned water supply pump 7 generates (further can be on concentrated water outlet
First control valve is set, at this point, the first control valve on concentrated water outlet is in the state opened), finally ultrafiltration is left with concentrated water
Film 6.
Preferably, above-mentioned backwash operation regularly is carried out to the ultrafiltration membrane 6, a preferred embodiment is：
Ultrafiltration membrane 6 is often run 5~6 minutes, and the first control valve 8 on water outlet pipe is closed 20~30 seconds, carries out pressurize
Backwash, to ensure the high throughput of ultrafiltration membrane 6, the operation of subsequent ultrafiltration membrane 6 and backwash operation are alternately.Above-mentioned water supply pump
7 preferably use big flow circulating pump 7.
Based on above-mentioned 6 backwashing function of ultrafiltration membrane, the anti-pollution that can effectively improve ultrafiltration membrane 6 blocks up ability, should to improve
The service life of ultrafiltration membrane 6 extends its cleaning frequency.
The system for advanced optimizing above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1 are described de-
Sulphur treatment unit for waste water further includes pre-treatment mechanism, and the pre-treatment mechanism includes clear water reserviors 5 and at least level-one that is sequentially connected in series
Sedimentation basin, along desulfurization wastewater circulating direction, sedimentation basin 4, the clear water reserviors 5 described in final stage are useless by desulfurization with the filter mechanism
Flow siphunculus is sequentially connected in series.Desulfurization wastewater is pre-processed by pre-treatment mechanism, the work that can reduce filter mechanism is negative
Lotus improves the working efficiency and service life of filter mechanism.Clear water reserviors 5 are set between final stage sedimentation basin 4 and filter mechanism, it can be with
Coordinate the work rhythm between pre-treatment mechanism and filter mechanism, ensures the treatment effect of pre-treatment mechanism.
Preferably, such as Fig. 1, the sedimentation basin has three-level, wherein first order sedimentation basin 2 is for precipitating in desulfurization wastewater
Large particle；To milk of lime is added in second level sedimentation basin 3, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid (preferably sequentially adds
Enter), to promote suspended particulate substance, heavy metal and at least part of sulfate radical in desulfurization wastewater to precipitate；To third level sedimentation basin 4
Middle addition sodium carbonate softening agent, to promote the hardness species precipitate in desulfurization wastewater, which includes calcium, magnesium etc..
Further, as Fig. 1, above-mentioned pre-treatment mechanism are also configured with sludge concentration tank 32, sedimentation basin bottoms at different levels are all provided with
There are mud discharging mouth, each mud discharging mouth to be connect respectively with sludge concentration tank 32 by sludge pipe, it is equal at each mud discharging mouth
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 under width
Narrow taper, above-mentioned mud discharging mouth are set to the bottom end of corresponding sedimentation basin.In addition, above-mentioned pre-treatment mechanism may also include it is de-
Sulphur wastewater collection pond 1, desulfurization wastewater raw water enter regulating water quality and water in the desulfurization wastewater collecting pit 1.
Desulfurization wastewater raw water enters 1 regulating water quality of desulfurization wastewater collecting pit and water, and water outlet enters first order sedimentation basin 2,
Large particle in desulfurization wastewater sinks to 2 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 32, supernatant enters second level sedimentation basin 3；By be added sequentially into second level sedimentation basin 3 milk of lime,
Sulfur-bearing recaptures the medicaments such as agent, bodied ferric sulfate flocculation aid, promotes suspended particulate substance, heavy metal and part of sulfuric acid in desulfurization wastewater
Root becomes sludge, is deposited on the bottom of second level sedimentation basin 3, and muddy water is periodically emitted into sludge concentration tank 32 through mud discharging valve,
Supernatant enters third level sedimentation basin 4；By adding sodium carbonate softening agent, calcium, magnesium in waste water etc. into third level sedimentation basin 4
Hardness substance becomes sludge, is deposited on the bottom of third level sedimentation basin 4, and muddy water is periodically emitted into sludge condensation through mud discharging valve
Pond 32, supernatant enter clear water reserviors 5.Agitating paddle can be set in above-mentioned desulfurization wastewater collecting pit and sedimentation basin at different levels,
To improve the sedimentation effect of desulfurization wastewater.Above-mentioned big flow can be arranged on pipeline between clear water reserviors 5 and filter mechanism to follow
Ring pump 7.
As one of preferred embodiment, the concentrated water outlet is precipitated with described in the clear water reserviors 5 or in which level-one
Pond connects, i.e., the concentrated water obtained through ultrafiltration membrane 6 is back in clear water reserviors 5 or in which first stage precipitation tank and continues with, de- to realize
The zero-emission of sulphur waste water.Preferably, such as Fig. 1, which connect with clear water reserviors 5.
The system for advanced optimizing above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1 are described light
Water outlet pipe is connected with fresh water collecting pond 9, and the fresh water collecting pond 9 is connected by fresh water runner pipe and the desulfurization wastewater entrance
It is logical, along fresh water circulating direction in being equipped with the first diaphragm pump 16 and first filter 17 on the fresh water runner pipe successively.Using every
The corrosion that membrane pump may be implemented the quantitative conveying of desulfurization wastewater, while prevent desulfurization wastewater from being pumped to common material.Fresh water collecting pond 9
In waste water under the power of the first diaphragm pump 16 through first filter 17 quantitatively enter mixed ingredients case 23 in；Above-mentioned first
Filter 17 is further filtered fresh water, ensures the cleannes of reunion liquid, further decreases follow-up reunion spray gun 29 and blocks
Probability.
The system for advanced optimizing above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1, along reunion
Liquid circulating direction is in the reunion liquid for being equipped with the second diaphragm pump 26 and the second filter 27 on pipe successively.In mixed ingredients case 23
The reunion liquid of preparation is supplied under the power of the second diaphragm pump 26 to spray gun 29, and the second filter 27 can filter out undissolved complete
Feed particles ensure the cleannes of reunion liquid, reduce the probability that reunion spray gun 29 blocks.
Above-mentioned first filter 17 and the second filter 27, which are both preferably, uses cartridge filter, useless with preferably desulfurization
Water/reunion liquid filter effect.
In above-mentioned mixed ingredients case 23, desulfurization wastewater fresh water and reunion material mixed preparing reunion liquid, the part group
Polymers material includes that agglomerator expects to be connected with agglomerator with agglomerator liquid material, i.e. the reunion material inlet of the mixed ingredients case 23 and consolidate admittedly
Hopper 24 and agglomerator liquid tank 25.The mixed ingredients case 23 is also configured with blender, desulfurization wastewater fresh water, agglomerator expect admittedly and
Agglomerator liquid material is quantitatively added in mixed ingredients case 23 and is uniformly mixed under the stirring action of blender and is configured to reunite
Agent.Above-mentioned agglomerator expects mainly to be compounded according to a certain percentage by ionic surfactant and wetting agent admittedly, wherein ion
Type surfactant includes：Dodecyl sodium sulfate, cetyltrimethylammonium bromide, neopelex etc. are at least
It is a kind of；Wetting agent includes：At least one of dihexyl sodium sulfosuccinate, sodium succinate etc..Above-mentioned agglomerator liquid material mainly by
Glue connects agent and additive compounds according to a certain percentage, wherein glue connects agent and includes：At least the one of polyacrylamide, pectin etc.
Kind；Additive includes at least one of phosphate, metaphosphate, polyphosphate etc..
The system for advanced optimizing above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1, the spray
Rifle 29 is also configured with anti-blocking wiper mechanism, blocks up phenomenon to eliminate spray gun dirt caused by reunion liquid by the anti-blocking wiper mechanism, protects
The stable and high effective operation of reunion processing unit is demonstrate,proved, simplifies the Manual maintenance operations of spray gun 29, extends the service life of equipment.Specifically
Ground, such as Fig. 1, the anti-blocking wiper mechanism include the clear water that is connect with the spray gun 29 for pipe, in the clear water for pipe and described
Reunion liquid is for being equipped with the second control valve (having illustrated, do not mark) on pipe；When needing to clean the spray gun 29, institute is closed
Reunion liquid is stated for second control valve on pipe, opens the clear water for second control valve on pipe, to the spray gun
Water-filling is cleaned in 29；After the completion of cleaning, the clear water is closed for second control valve on pipe, opens the reunion liquid
For second control valve on pipe.
In the present embodiment, it is preferable that by the way of periodically being cleaned automatically to spray gun 29, a specific embodiment
It is：Spray gun 29 is often run 1 hour, is closed the reunion liquid for second control valve on pipe, is opened the clear water on pipe
Second control valve, into spray gun 29, water-filling carries out cleaning 5~6 seconds to spray gun 29；After the completion of cleaning, the clear water is closed
For second control valve on pipe, the reunion liquid is opened for second control valve on pipe, spray gun 29 continues spray group
Poly- liquid carries out reunion dedusting work.
It is easy-to-understand to, above-mentioned clear water can connect cleaning water tank 30 for pipe, to supply clear water, in the clear water for Guan Shangshe
Clear water transfer pump is set, which can be centrifugal pump etc., to provide power needed for cleaning water supply.Above-mentioned reunion liquid supplies
The second control valve on pipe is arranged after the second filter 27 along reunion liquid circulating direction.
It is further preferred that above-mentioned spray gun 29 is double-current atomizing lance 29, reunion liquid mistization can be made to spray, improve and reunite
Dust removing effects.Such as Fig. 1, which is connected with compressed air for pipe and compressed air source 28, can supply pressure 0.3~
The compressed air of 0.5MPa.Above-mentioned reunion processing unit may include more spray guns 29, can be arranged on every spray gun 29 at least one
Nozzle, the diameter of nozzle is preferably within the scope of 2~7mm；In the present embodiment, there are two double fluid atomizations for setting on every spray gun 29
Nozzle, each spray gun 29 can be circular layout along the circumferential direction of 31 tube body of flue, and multiple sprays can also be set gradually along flue gas circulating direction
Drenching layer, each spraying layer can be arranged a spray gun 29 or along tube body more spray guns 29 of circumferential annular setting.Above-mentioned reunion processing
Each spray gun 29 of unit is preferably placed in the flue 31 between coal-burning power plant's air preheater and deduster.
The double fluid atomizing lance 29 is preferably that the agglomerator size droplet diameter after can making atomization is less than 60 microns, the reunion of atomization
Agent drop is quickly distributed with flue gas in flue 31 and is come into full contact with the fine particle in flue gas, through wetting and flocculation handle
Fine particle is agglomerated into large particle, while the inorganic salts in the reunion agent solution prepared using desulfurization wastewater can dramatically increase
The carrying capacity of grain object, the highly charged particulate matter of large scale are easy to be trapped fixed and removed by deduster so that flue gas fine grained
The concentration of emission of object is less than 10mg/m3, the minimum discharge of fine particle is realized, and diameter is less than 60 microns of agglomerator drop
In moisture also evaporated rapidly under the high temperature action of flue gas, using desulfurization wastewater prepare reunion agent solution in inorganic salts,
Heavy metal ion etc. becomes crystal salt, and crystal salt enters deduster with large particle and removes and then realize the zero of desulfurization wastewater
Discharge can avoid causing to damage to cleaner since atomized drop can be evaporated in 0.5 second completely without entering deduster
Wound.
Embodiment two
The utility model embodiment provides a kind of system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, with
The structure for the system that above-described embodiment one is provided is essentially identical, difference lies in filter mechanism therein is different, specifically：
Such as Fig. 2, which includes prefilter 6, RO UF membranes mechanism and NF UF membranes mechanism, the prefilter
6 have the first water outlet pipe and the first concentrated water outlet；The arrival end of RO UF membranes mechanism goes out with first fresh water
Mouth pipe connection, RO UF membranes mechanism have the second water outlet pipe and the second concentrated water outlet；NF UF membranes mechanism
Arrival end be connected to the second concentrated water outlet, NF UF membranes mechanism have third water outlet pipe and third concentrated water
Outlet, the third water outlet pipe are connected with monovalence brine collecting mechanism, the third concentrated water outlet i.e. with it is above-mentioned
The desulfurization wastewater entrance of mixed ingredients case 23 is connected to.Wherein, in RO UF membranes mechanism, the salt of the overwhelming majority in desulfurization wastewater
Substance is divided to be trapped within influent side and produce concentrated water, the less fresh water of salinity then enters the second water outlet pipe；In NF UF membranes
In mechanism, the monovalent salt in the isolated concentrated water of RO films 12 generates monovalence brine through NF films 18, and high price salt is then by NF films 18
Retention generates high price salt concentrated water realizes the recycling of desulfurization wastewater to realize point salt treatment of desulfurization wastewater.
It is further preferred that in above-mentioned NF UF membranes mechanism, for that may have the divalent of a small amount of part in other words
Ion penetrates the case where NF films 18, and it is as follows can to advanced optimize this system：Such as Fig. 2, the monovalence brine collecting mechanism includes mixed
Bed unit 21, which, which has, is convenient for quick-replaceable anion-cation exchange resin, can be effectively removed the moon of divalent
Cation；Divalent ion in the desulfurization wastewater of the third water outlet pipe circulation can be by the negative and positive in the mixed bed unit 21
Resin removes, and to obtain pure monovalence salting liquid, which can enter brine tank 22 and collect.Above-mentioned mixed bed unit 21
Reproducible mixed bed is generally used, can be bought by market, concrete structure is omitted herein.Above-mentioned mixed bed unit 21 with
The caching that fresh-water tank 20 carries out NF UF membrane fresh water can be set between NF UF membranes mechanism.The monovalence salting liquid of above-mentioned acquisition is to contain
The sodium chloride solution and/or Klorvess Liquid of the less high concentration of impurity.
It is further preferred that such as Fig. 2, RO UF membranes mechanism includes RO films 12 and the first sonic generator 13；Namely
It is the RO films 12 with the first sonic generator 13, it can be achieved that automatic cleaning to the RO films 12.Specifically, the RO films 12 formation
For circular cylinder, influent side is its inner cavity, the RO putaminas of annular is arranged with outside the RO films 12, above-mentioned first sonic generator 13 is excellent
It is selected as being structure and to be sheathed on outside the RO films 12 in a ring, and between RO films 12 and RO putaminas.Since concentration is higher dense
Salinity material part crystallization in water be precipitated can be attached to RO films 12 surface formed it is reversible dirty stifled, it is therefore desirable to the RO films 12
Carry out cleaning periodically or non-periodically.When needing to clean the RO films 12, sent out by first sonic generator 13
Go out ultrasonic wave and causes cavitation in the corresponding desulfurization wastewater to generate bubble, using the bubble in the RO films 12
The pressure effect that skin breakage generates promotes insoluble dirt to decompose；Cavitation will produce a large amount of micro-bubble, and a large amount of bubbles exist
18 surface high frequency of NF films hits rupture and moment will produce the pressure of thousands of a atmospheric pressure, under high pressure effect 12 surface of RO films and
Insoluble dirt in concentrated water can be decomposed and is discharged with concentrated water.Preferably, the frequency of first sonic generator 13 is 20000
Hertz, the bubble diameter that cavitation generates is in 60 microns.
It is further preferred that such as Fig. 2, NF UF membranes mechanism includes NF films 18 and the second sonic generator 19；Namely
It is the NF films 18 with the second sonic generator 19, it can be achieved that automatic cleaning to the NF films 18.Specifically, the NF films 18 formation
For circular cylinder, influent side is its inner cavity, the NF putaminas of annular is arranged with outside the NF films 18, above-mentioned second sonic generator 19 is excellent
It is selected as being structure and to be sheathed on outside the NF films 18 in a ring, and between NF films 18 and NF putaminas.Since concentration is higher dense
High price salt in water because excessive concentration and partially crystallizable is precipitated, can be attached to NF films 18 surface formed it is reversible dirty stifled, therefore
Need the cleaning periodically or non-periodically to the NF films 18 progress.When needing to clean the NF films 18, pass through described second
Sonic generator 19 sends out ultrasonic wave and causes cavitation in the corresponding desulfurization wastewater to generate bubble, utilizes the gas
Steeping the pressure effect generated in 18 skin breakage of NF films promotes insoluble dirt to decompose；Cavitation will produce a large amount of small gas
Bubble, a large amount of bubbles hit rupture in 18 surface high frequency of NF films and moment will produce the pressure of thousands of a atmospheric pressure, are acted in high pressure
Insoluble dirt in lower 18 surface of NF films and concentrated water can be decomposed and is discharged with concentrated water.Preferably, second sonic generator
19 frequency is 20000 hertz, and the bubble diameter that cavitation generates is in 60 microns.
Based on the above-mentioned RO UF membranes mechanism with acoustic vibration and NF UF membranes mechanism, may be implemented to RO films 12 and NF
Film 18 is cleaned in real time, and the flux decline of RO films 12 and NF films 18 is smaller, without frequent shutdown cleaning maintenance, can be effectively reduced
The operation maintenance frequency of RO films 12 and NF films 18 reduces production maintenance to extend the service life of RO films 12 and NF films 18
Cost.
It is further preferred that such as Fig. 2, the prefilter 6 includes ultrafiltration membrane 6, is equipped in the first water outlet pipe
First control valve 8.Ultrafiltration membrane 6 provided in this embodiment is identical as the structure for the ultrafiltration membrane 6 that above-described embodiment one is provided, equally
Pressurize backwash operation can be carried out, details are not described herein again for specific ground structure and method.
It is further preferred that such as Fig. 2, it is useless along desulfurization on the first water outlet pipe and the second concentrated water outlet
Water circulating direction is equipped with booster pump 10 and accurate filter 11 successively.Above-mentioned accurate filter 11 can filter out the small particle in waste water
Suspended matter reduces the live load of follow-up RO films 12 and NF films 18, ensures treatment effect, is preferably filtered using polyester fiber
Core.In addition, fresh water collecting pond 9 can also be arranged between above-mentioned prefilter 6 and RO UF membranes mechanism, the fresh water collecting pond 9 is excellent
It is selected as between the booster pump 10 being arranged on prefilter 6 and the first water outlet pipe；In above-mentioned RO UF membranes mechanism and NF films
Concentrated water collecting pit 15 can be also set between separating mechanism, which is preferably arranged in RO UF membranes mechanism and second
Between booster pump 10 on concentrated water outlet；The second above-mentioned water outlet pipe can also connect fresh water cache pool 14.
It is further preferred that such as Fig. 2, the second above-mentioned water outlet pipe is also connected to above-mentioned desulfurization wastewater entrance, from
And the zero-emission of desulfurization wastewater may be implemented.The isolated fresh water of RO films 12 contains a small amount of salinity, can still play above-mentioned
Increase flue gas in particulate matter carrying capacity effect, furthermore, it is possible to reduce reunion liquid prepare in water distribution quantity.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, it is characterised in that：At desulfurization wastewater
Manage unit, reunion liquid prepares unit and reunion processing unit；
The desulfurization wastewater processing unit includes the filter mechanism for being filtered to desulfurization wastewater, and the filter mechanism has
Water outlet pipe and concentrated water outlet；
It includes mixed ingredients case that the reunion liquid, which prepares unit, and the mixed ingredients case has reunion material inlet, desulfurization wastewater
Entrance and the outlet of reunion liquid, the desulfurization wastewater entrance are connected to the water outlet pipe；
The reunion processing unit includes the spray gun being inserted into flue, and the spray gun is connected with reunion liquid for pipe, the reunion
Liquid is for pipe and the reunion liquid outlet.
2. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as described in claim 1, it is characterised in that：Institute
It includes ultrafiltration membrane to state filter mechanism, and the first control valve is equipped in the water outlet pipe.
3. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as described in claim 1, it is characterised in that：Institute
It further includes pre-treatment mechanism to state desulfurization wastewater processing unit, the pre-treatment mechanism include clear water reserviors and be sequentially connected in series at least one
Grade sedimentation basin, along desulfurization wastewater circulating direction, sedimentation basin, the clear water reserviors described in final stage are useless by desulfurization with the filter mechanism
Flow siphunculus is sequentially connected in series.
4. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as claimed in claim 3, it is characterised in that：Institute
Concentrated water outlet is stated to connect with sedimentation basin described in the clear water reserviors or in which level-one.
5. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as claimed in claim 3, which is characterized in that institute
Stating sedimentation basin has three-level, including：
First order sedimentation basin for precipitating the large particle in desulfurization wastewater；
For milk of lime to be added, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid with promote suspended particulate substance in desulfurization wastewater,
The second level sedimentation basin of heavy metal and at least part of sulfate radical precipitation；
For sodium carbonate softening agent to be added to promote the third level sedimentation basin of the hardness species precipitate in desulfurization wastewater.
6. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as described in claim 1, it is characterised in that：Institute
It states water outlet pipe and is connected with fresh water collecting pond, the fresh water collecting pond is connected by fresh water runner pipe and the desulfurization wastewater entrance
It is logical, along fresh water circulating direction in being equipped with the first diaphragm pump and first filter on the fresh water runner pipe successively.
7. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as described in claim 1, it is characterised in that：Edge
Reunion liquid circulating direction is in the reunion liquid for being equipped with the second diaphragm pump and the second filter on pipe successively.
8. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as described in claim 1, it is characterised in that：Institute
It states spray gun and is also configured with anti-blocking wiper mechanism.
9. the system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater as claimed in claim 8, it is characterised in that：Institute
It includes the clear water that is connect with the spray gun for pipe to state anti-blocking wiper mechanism, in the clear water for pipe and the reunion liquid for Guan Shangjun
Equipped with the second control valve.
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| CN201721733139.2U CN207748979U (en) | 2017-12-13 | 2017-12-13 | The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033622A (en) * | 2017-12-13 | 2018-05-15 | 武汉天空蓝环保科技有限公司 | The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater |
| CN109181646A (en) * | 2018-11-06 | 2019-01-11 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of coal-burning power plant's dust suppressant for promoting fine grained to reunite |
| CN110713299A (en) * | 2019-10-22 | 2020-01-21 | 武汉天空蓝环保科技有限公司 | Passivation agglomeration complexing agent, preparation method and boiler flue gas treatment method |
| CN110759567A (en) * | 2019-10-22 | 2020-02-07 | 武汉天空蓝环保科技有限公司 | Chloride ion passivator, preparation method and desulfurization wastewater treatment method |
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2017
- 2017-12-13 CN CN201721733139.2U patent/CN207748979U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033622A (en) * | 2017-12-13 | 2018-05-15 | 武汉天空蓝环保科技有限公司 | The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater |
| CN109181646A (en) * | 2018-11-06 | 2019-01-11 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of coal-burning power plant's dust suppressant for promoting fine grained to reunite |
| CN109181646B (en) * | 2018-11-06 | 2021-02-26 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Dust suppressant for coal-fired power plant for promoting fine particle agglomeration |
| CN110713299A (en) * | 2019-10-22 | 2020-01-21 | 武汉天空蓝环保科技有限公司 | Passivation agglomeration complexing agent, preparation method and boiler flue gas treatment method |
| CN110759567A (en) * | 2019-10-22 | 2020-02-07 | 武汉天空蓝环保科技有限公司 | Chloride ion passivator, preparation method and desulfurization wastewater treatment method |
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