CN104906896B - Cloud formula dust pelletizing system - Google Patents

Cloud formula dust pelletizing system Download PDF

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Publication number
CN104906896B
CN104906896B CN201510356225.5A CN201510356225A CN104906896B CN 104906896 B CN104906896 B CN 104906896B CN 201510356225 A CN201510356225 A CN 201510356225A CN 104906896 B CN104906896 B CN 104906896B
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cylinder
cloud formula
fine particle
cloud
dust
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CN201510356225.5A
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CN104906896A (en
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王博
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王博
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Abstract

A kind of cloud formula dust pelletizing system, this dust pelletizing system is charging aperture foremost, and this charging aperture is connected with mist generator or atomization box, granular grows area or expansion joint, cloud formula collecting region or cloud formula dust arrester, air-introduced machine, the sealing of exit concentration measurement region successively;Granular grows area or expansion joint bottom connection dirt discharge groove;The outlet of cloud formula collecting region or cloud formula cleaner unit bottom connection ash exhauster and granular grows area or expansion joint tangentially connects cloud formula collecting region or cloud formula dust arrester.The present invention to the clearance of dust up to 99.6% 99.9%, to fine particle(PM2.5)Trapping is also up to 95%.

Description

Cloud formula dust pelletizing system
Technical field
The present invention relates to a kind of dust pelletizing system is and in particular to a kind of utilize cloud principle to dust catching especially to fine grained Thing(PM2.5)The cloud formula dust pelletizing system of trapping.
Background technology
Atmospheric pollution is one of key factor of impact China environment, and wherein dust pollution is the important portion of atmospheric pollution Point.Research shows, the fine particle in dust(PM2.5)It is easy to heavy metal in enriched air, acidic oxide, organic contamination Thing, antibacterial and virus etc., it is far above coarseparticulate to the harm of health.Therefore, control dust pollution, especially control The discharge of fine particle is significant.(Magnify year, the research of Inhalable Particulates in Urban Ambient Air, [J] Shanghai environment section Learn, 1999,18(4):154-157)
Industrial at present conventional dust pelletizing system has cyclone dust extractor, electrostatic precipitator, sack cleaner, wet scrubber Deng.Wherein wet scrubber with its structure simple, equipment investment is low, efficiency of dust collection is high and in its water add alkaline matter Have afterwards absorbing sulfur dioxide in flue ability the features such as, be widely used in the coal-burning boiler system of big and medium-sized cities. (Zhang Dianyin, Wang Chun. dedusting handbook [M]. Chemical Industry Press, 2004.)
Wet scrubber is to make dusty gas and liquid(Generally water)It is fully contacted, using inertial collision, interception and expansion Particulate matter is separated from dusty gas by the effect such as scattered.In engineering, wet scrubber is divided into mental retardation and high energy two class.Low The pressure loss of energy wet scrubber is 0.2-1.5kPa, but it is very low to 10 μm of particles below purification efficiencies;High energy is wet The purification efficiency of formula cleaner unit is up to 99%, but its pressure loss is 2.5-9.0kPa.(Jiang Zhanpeng, Yang Hongwei. Environmental Engineering [M]. Higher Education Publishing House, 2013.)
However, the wet scrubber being used at present gradually exposes some in actual motion has asking of universality Topic:1. the flue gas with water discharged is serious, and this not only results in draught fan impeller and glues ash, produces abnormal vibrations, and can be seriously rotten Erosion fan blade and back-end ductwork;2. the flue-gas temperature fall discharged is excessive, and this can make chimney discharge the lifting of flue gas Height reduction, and then have influence on pollutant dilution diffusion in an atmosphere in flue gas, the local of chimney near zone can be caused empty Gas pollutes.(Dong, Li Jun etc. wet scrubber is in operation problems analysis, [J] electric power station system engineering, and 2006,22 (6):29-30)
Water is dispersed into tiny drop by the method that traditional wet process of cleaning relies primarily on mechanical spraying, used by drop Property collision and diffusion precipitin carry out catching dirt.Typically spray to fine particle dust(PM2.5)Collecting effect not good, mainly because Too big for the particle diameter of water smoke(200~600 μm of particle diameter).(Chen Zhuokai, Chen Fanzhi, etc. Atomization Water Made by Ultrasonic Technique is in Dust Removal Experiment Application [J]. Guangdong chemical industry, 2006,33(10):74-77)
Through retrieval, Chinese patent application 200810091426.7 discloses a kind of high-efficiency wet-type dust collector, not only increases Collection efficiency to PM2.5, also efficiently solves the problems, such as equipment corrosion, but does not still solve traditional wet cleaner unit water consumption Amount is big, high energy consumption, the shortcomings of blowdown easily blocks, maintenance cost is high.
Content of the invention
The present invention provides a kind of cloud formula dust pelletizing system, has good separation under the high operating mode containing Dust Capacity to fine particle Effect.
For this reason, the present invention adopts the following technical scheme that:
A kind of cloud formula dust pelletizing system, this dust pelletizing system includes producing the device of relative humidity supersaturation water smoke, and this device is given birth to The supersaturation water steam becoming is sufficiently mixed with fine particle in the flow field of disturbance, and saturated vapor is with fine particle for condensing Karyolymph is simultaneously attached to fine particle surface, so that fine particle particle diameter is constantly increased, to improve the hydrophilicity of fine particle, and And the volume of increase fine particle and weight, and then facilitation is played in the trapping to fine particle;Meanwhile, supersaturation water Drop in mist and fine particle mutually collide, and merge, reunion microphysical processes, to promote to fine particle further Trapping;And discharge substantial amounts of anion during being somebody's turn to do and produce electrostatic reaction with fine particle, be conducive to the heavy of fine particle Fall.
This system foremost be charging aperture, this charging aperture successively with mist generator or atomization box, granular grows area or swollen Swollen section, cloud formula collecting region or cloud formula dust arrester, air-introduced machine, the sealing connection of exit concentration measurement region;Granular grows area or expansion Section bottom connection dirt discharge groove;Cloud formula collecting region or cloud formula dust arrester bottom connection ash exhauster and granular grows area or expansion joint Outlet tangentially connect cloud formula collecting region or cloud formula dust arrester.
Described mist generator or atomization box are supersonic atomizer or high-pressure nozzle atomising device or shower nozzle atomization dress Put.
The described ash exhauster port of export adopts water-stop.
Described granular grows area or expansion joint are erect or accumbency placement.
Described mist generator or atomization box and granular grows area or expansion joint become one.
Dust-contained airflow stops more than 2s in described granular grows area or expansion joint.
Described cloud formula collecting region or cloud formula dust arrester are mainly by being coaxially disposed, have each other cavity, each other The central cylinder of seal isolation, middle cylinder, outer cylinder body composition, the bottom of this three cylinder be cone structure and middle cylinder and The cone distal end of outer cylinder body is inside and outside underflow opening, and this inside and outside underflow opening passes through flange and ash exhauster connects;Granular grows area Or the outlet of expansion joint and the tangential entry insertion of cavity upper end between described middle cylinder and outer cylinder body;Several small cyclones On the inwall that separator is uniformly fixed on middle cylinder with the center of three cylinders for axle;Middle cylinder and the combination of its underpart cone Place is connected with base plate, leaves air inlet annular distance between the outer rim of this base plate and the inwall of middle cylinder;Several small cyclones described divide Be fixed on base plate from the bottom discharge mouth of device and and middle cylinder bottom cone insertion;Several small cyclones described separate The upper end of device has air inlet, the inner chamber insertion of this air inlet and middle cylinder;This several small cyclones separator upper end Bend pipe and central cylinder insertion are passed through in outlet;Described bend pipe is placed in the top seal at outer cylinder body top, and this top cover has out Mouthful.
The angle of the section of described winding pipe exit and horizontal plane is 90oTo 180o.
The present invention, using " cloud " physicss, collision reunion principle, provides a kind of high and low cost of efficiency of dust collection, floor space The fine particle collection device of few the features such as.The present invention is mainly suitable for the collection of fine particle PM2.5, can be used for commercial production The trapping of middle dust, indoor and outdoor air purification etc., play the effect of dust suppression dedusting, reduce the danger to health for the fine particle Evil.
In the present invention, dust is reunited before entering collecting region and is grown up, and fluid drag is greatly reduced, is then removed by cleaner unit.Both Take into account that cyclone dust removal structure is simple, reduced investment, take up an area small scale, energy consumption is low, easy and simple to handle, easy to maintenance, total efficiency of separation is high, The advantage of stable performance, has the characteristics that efficiently to trap fine particle again.Experiment shows, the present invention to the clearance of dust up to 99.6%-99.9%, to fine particle(PM2.5)Trapping is also up to 95%.With different the dedusting technologies such as present invention, electrostatic precipitation Device, sack cleaner, cyclone collection different-grain diameter fine particle dusts, utilize laser particle analyzer analysis different after collection The classification efficiency of particle diameter dust, as shown in Figure 4.As can be seen that the present invention is above other to the collection efficiency of PM2.5 several removing Dirt device.
Compared with traditional wet process of cleaning, traditional wet process of cleaning is using drop as catching dirt body, for example with mechanical spray Cleaning mixture is dispersed into tiny drop by the method for head, relies primarily on inertial collision, interception capture and the diffusion precipitin of drop Form carries out catching dirt.Because the particle diameter of its water droplet is excessive, trap effect on driving birds is not good for fine particle, and what " cloud " technology produced Size droplet diameter is little(It is generally less than 5 μm), greatly, evaporation rate is high, and dust-containing area steam can be made to evaporate rapidly for specific surface area, forms satiety And environment, then liquefied with dust granules for the nuclei of condensation, so that dust granules particle diameter is constantly increased, improve efficiency.Moreover, " cloud " Technology, the water yield of use is few, not there is a problem of that in wet dust collection technology, by-product is difficult to collect and secondary pollution.
From present configuration analysis, how it reaches described effect below.
1. achieve two-stage in outer cylinder body with cyclone separator to separate, outer cylinder body is mutually isolated with cyclone separator close Envelope, makes two-stage mutually not interfere with each other between separating, respectively the fine particle of different-grain diameter is removed, efficiency of dust collection carries significantly High;
2. solve a tolerance difficult problem pockety in small cyclones separator parallel process.Air-flow is through tangentially entering Mouthful, produce eddy flow in outer cylinder body, finally even into some small cyclones separators, efficiently enter in small cyclones separator Row fine particle is collected.
3. by Clausius-C1apeyron equationLearn, water saturation vapour pressure is with temperature Rising and increase, when temperature is 10 DEG C, water saturation vapour pressure is 1200Pa.For cyclone separator, close Outer wall is higher-pressure region, and center is negative pressuren zone.The pressure of the outer wall of cyclone separator is far above 1200Pa, and temperature is less than 10 DEG C, Gas containing steam condenses rapidly in outer wall higher-pressure region.So, it is that high pressure condenses rapidly using cyclone separator near outer wall layer The feature that area, central gas are forced down, dusty gas, in higher-pressure region rapid condensation, is conducive to separating.
4. small cyclones separator upper end outlet is bend pipe it can be ensured that static pressure suction, makes each small cyclones separator tolerance Uniformly.
5. dusty gas flows out from small cyclones separator upper end outlet, pours in central cylinder, in central cylinder, some Stock dusty gas mutually collides, disturbance, so that granule continues to grow up, is conducive to the collection of granule, realizes the third level and separates.
6., before cloud formula collecting region or cloud formula dust arrester dedusting, atomizing humidifying performance process is carried out to dust-contained airflow, fully Using " cloud " physics principle, efficient collection is carried out to fine particle.Using advanced electroacoustic transduction ultrasonic atomization or Person's high-pressure nozzle spray technique, water consumption is very low, produces finely dispersed Micron-order high-density fine droplet, drop rapid vaporization Produce local supersaturated vapor, so that supersaturated vapor is fully combined with fine particle, and particle growth area is provided, allow fine particle Grow up, finally efficiently remove fine particle.
7. the cyclone separator of the present invention is connected in parallel using several small cyclones separators(Current cyclonic separation Device many to be used alone, air quantity is uneven, efficiency is low), each small cyclones separator intake and pressure distributing homogeneity are compared with mesh Front cyclone separator has obtained greatly improving.
Brief description
Fig. 1 is the schematic block diagram of the present invention;
Fig. 2 is the cutting structural representation of cloud formula collecting region of the present invention or cloud formula dust arrester;
Fig. 3 is the schematic top plan view of Fig. 2;
Fig. 4 is for the present invention and sack cleaner, electrostatic precipitator, cyclone dust extractor, wet scrubber in certain power plant's dedusting Dust removing effects comparison diagram in test;
Fig. 5 is the present invention and the classification efficiency comparison diagram to different-grain diameter particle for the wet scrubber;
Fig. 6 is the present invention and Philips air purifier dust removing effects figure in different time;
Fig. 7 is the present invention and Philips air purifier removal VOCs design sketch in different time;
Fig. 8 is the present invention and the classification efficiency comparison diagram to different-grain diameter particle for the Philips air purifier.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention and its effect are further illustrated.
Embodiment 1, with reference to Fig. 1, a kind of cloud formula dust pelletizing system, this device is charging aperture 1 foremost, and this charging aperture 1 is successively With mist generator or atomization box 2, granular grows area or expansion joint 3, cloud formula collecting region or cloud formula dust arrester 5, air-introduced machine 7, Exit concentration measurement region 8 sealing connection;Granular grows area or expansion joint 3 bottom connection dirt discharge groove 4;Cloud formula collecting region or cloud formula are removed The outlet of dirt device 5 bottom connection ash exhauster 6 and granular grows area or expansion joint 3 tangentially connects cloud formula collecting region or cloud formula is removed The upper end of dirt device device.Wherein, described cloud formula collecting region or cloud formula dust arrester 5(With reference to Fig. 2, Fig. 3)Main by being coaxially disposed , the central cylinder 14 that each other there is cavity, seal off each other, middle cylinder 27, outer cylinder body 23 form, this three The bottom of body is cone structure, and the cone distal end of middle cylinder 27 and outer cylinder body 23 is inside and outside underflow opening 10,24, should Inside and outside underflow opening 10,24 passes through flange and ash exhauster 6 connects;The outlet of granular grows area or expansion joint 3 and described intermediate cylinder Cavity between body 27 and outer cylinder body 23 passes through tangential entry 22 insertion;Several small cyclones separators 28 are with three cylinders The heart is uniformly fixed on the inwall of middle cylinder 27 for axle;The junction of middle cylinder 27 and its underpart cone is connected with base plate 11, leave air inlet annular distance 26 between the inwall of the outer rim of this base plate 11 and middle cylinder 27;Several small cyclones separators described 28 bottom discharge mouth 9 be fixed on base plate 11 and and middle cylinder 27 bottom cone insertion;Several small cyclones described The upper end of separator 28 has air inlet 29, the inner chamber insertion of this air inlet 29 and middle cylinder 27;This several cyclonic separation Bend pipe 12 and central cylinder 14 insertion are passed through in the outlet of device 28 upper end;The top cover 13 that described bend pipe 12 is placed in outer cylinder body top is close Envelope, this top cover 13 has outlet 15.
The described section of bend pipe 12 outlet and the angle of horizontal plane are 90oTo 180oSo that pressure drop is uniformly distributed.
Described ash exhauster 6 is made up of bed material groove 17, connection valve 19, U-tube 20;Described bed material groove 17 one end with described Inside and outside underflow opening 10,24 is connected by flange 16, and the other end is connected with U-tube 20 by connection valve 19, this U-tube 20 another One end is sewage draining exit 21;The bottom of bed material groove 17 is provided with blowoff valve 18.
Described mist generator or atomization box 2 are supersonic atomizer or high-pressure nozzle atomising device or shower nozzle atomization dress Put.
Embodiment 2, mist generator or atomization box 2 are not linked in sequence as shown in Figure 1 with granular grows area or expansion joint 3, But mist generator or atomization box 2 are arranged on granular grows area or expansion joint 3 side, charging aperture 1 and granular grows area or Expansion joint 3 is directly connected to, and the fog of mist generator or atomization box 2 generation is born from granular grows area or expansion joint 3 side Pressure suction, dust-contained airflow is directly contacted with fog in granular grows area or expansion joint 3.Remaining same embodiment 1.
Embodiment 3, described mist generator or atomization box 2 may be installed in granular grows area or expansion joint 3 and make both Become one.Remaining same embodiment 1.
Embodiment 4, the cloud formula collecting region in embodiment 1 or cloud formula dust arrester 5 are with several cyclone separator and joint group, several Individual electrostatic precipitator joint group, wet scrubber etc. are replaced.
Embodiment 5, the cloud formula collecting region in embodiment 1 or cloud formula dust arrester 5 can be in parallel multiple.From expansion joint outlet Place's pipeline is divided into several bifurcated pipe roads, is connected respectively to several cloud formula collecting regions or the import of cloud formula dust arrester, several Cloud formula collecting region or cloud formula dust arrester are placed in parallel, and the outlet of this several cloud formula collecting region or cloud formula dust arrester remerges To in a pipeline, it is then attached to fans entrance.Such connection may insure each cloud formula collecting region or cloud formula dedusting dress Air quantity in putting uniformly, and makes several cloud formula collecting regions or cloud formula dust arrester carry out the receipts to fine particle simultaneously Collection.The dust removing effects of the present invention are as shown in Figure 4.
Workflow of the present invention:
Under air-introduced machine 7 effect, dust-contained airflow is cut by the tangential entry 22 of cloud formula collecting region or cloud formula dust arrester 5 upper end To the cavity entering between outer cylinder body 23 and middle cylinder 27, produce rotating flow, under the action of the centrifugal force, carry out the first fraction From.The coarse granule isolated or drop will fall the cone inwall of outer cylinder body 23 lower end, discharge through outer underflow opening 24.Through The air-flow of flash trapping stage through air inlet annular distance 26 enter middle cylinder 27 bottom, then from cyclone separator 28 upper end air inlet Mouth 29 rotates into each cyclone separator 28 respectively, produces rotating flow in cyclone separator 28, carries out the second level and separates.Right For cyclone separator, it is higher-pressure region near outer wall, center is negative pressuren zone.It is 10 in temperatureoDuring C, water saturation vapour pressure is 1200Pa about, the gas containing steam condenses rapidly in higher-pressure region, and so that dust granules is grown up.Gas condensation containing fine particle Become drop, the inwall along cyclone separator flows down, enter in the cone of middle cylinder 27 lower end by discharging opening 9, this cone Interior speed is almost nil, pressure drop also very little, and drop can flow down along cone inwall, discharges from interior underflow opening 10.In each whirlwind The outlet ends of separator 28 have one outlet elbow 12 respectively, and on the one hand ensure generation is static pressure, rather than dynamic pressure, it is to avoid Impact to top cover 13, suppression impurity refluence simultaneously;On the other hand ensure that the air quantity of cyclone separator is uniformly distributed.Through processing Air-flow afterwards enters into the central tube 14 of cloud formula cleaner unit by exit bend 12.In central tube 14, multiple exit bend 12 The air-flow released mutually collides, and so that fine particle is grown up again, realizes the third level and separates.Under blower fan 7 suction function, dedusting Clean gas flow afterwards is arranged through outlet 15 is outer.
Before equipment runs, first to water filling fluid-tight in ash exhauster 6, make to be full of water in device(The liquid level of U-tube cannot be below The minimum level of separator), prevent air from entering device.Flow out from underflow opening with dust-laden liquid, the liquid in blowdown apparatus More and more, can outwardly discharge, also can connect a row in its lower end in 21 times termination one container collection sewage of sewage draining exit Dirty pipeline, realizes automatic pollution discharge.Periodically open blowoff valve 18, blowdown cleaning is carried out to device.
The test of dust removing effects of the present invention is as follows:
Test 1:Certain power plant's dedusting.
Charging aperture concentration(g/m3)For 0.2,0.5,1,2,5,30.
Start air-introduced machine 7, under the condition of negative pressure that air-introduced machine 7 produces, dust-contained airflow enters atomizing generator from charging aperture 1 2, it is then fed to granular grows area 3, enter cloud formula collecting region or cloud formula dust arrester 5, outlet is discharged to by air-introduced machine air vent Concentration mensuration area 8, surveys exit concentration with dust instrument, and exit concentration and efficiency of dust collection are as shown in the table.The present invention is changed to pocket type Cleaner unit, electrostatic precipitator, cyclone dust extractor and wet scrubber, measurement pressure drop simultaneously calculates efficiency of dust collection.Several efficiency of dust collections Contrast as shown in Figure 4 it is clear that, the dust removing effects of cyclone dust extractor too low it is impossible to reach high standard alignment request;Electrostatic precipitator is once Investment is big, and equipment operating cost is high;Easily paste bag phenomenon because of water spray in sack cleaner, and air-flow, by smooth, leads to cloth bag no Method continues dedusting;Wet dust removal can make equipment corrosion and energy consumption is big, and the efficiency of dust collection of the present invention is much higher.
With air quantity 1200m3As a example/h, the efficiency of dust collection of test cloud formula dust pelletizing system and wet scrubber, and to different grains Its classification efficiency is surveyed respectively using laser particle analyzer, the corresponding classification efficiency of different diameter airborne particle is as schemed after the particle sampling of footpath Shown in 5.Now the liquid-gas ratio of wet scrubber is 0.5L/m3.It can be seen that cloud formula dust pelletizing system is less than the thin of 10um to particle diameter The arresting efficiency of granule is apparently higher than wet scrubber.And water consumption is 600L to wet dust removal per hour, and cloud formula dedusting system System is only 40L, greatly reduces water consumption.
Test 2:The laboratory present invention and air purifier are to fine particle(PM2.5)The contrast of collecting effect.
In enclosed ventilation cupboard internal-combustion scented incense, stand 1h.In the presence of air inducing machine negative pressure, dusty gas enters cloud Formula dust pelletizing system purifies, and purified gas is sent back to inside fume hood again, so that fume hood internal gas flow is circulated.With PM2.5 detector measures PM2.5 and VOCs concentration in fume hood, uses dust instrument and laser particle analyzer to measure different-grain diameter model simultaneously Enclose the collection efficiency of granule.Cloud formula dust pelletizing system is net in different time to PM2.5 and VOCs in fume hood with air purifier Change effect such as Fig. 6, Fig. 7, as shown in Figure 8 to the collection efficiency of different-grain diameter range of particle.From Fig. 6, Fig. 7 as can be seen that with Air purifier is compared, and cloud formula cleaner unit is easier to be preferably minimized PM2.5 and VOCs concentration in fume hood in the shorter time Value, and minimum is less than air purifier.As can see from Figure 8 with the increase of grain diameter, the receipts of two kinds of dust arresters Collection efficiency all improves therewith.When grain diameter is 2.5 μm, the collection efficiency of cloud formula dust pelletizing system and air purifier is respectively 99.61% and 91.56%.
Experiment 3:The clean-up effect to vehicle exhaust for the laboratory present invention
In order to study the clean-up effect to vehicle exhaust for the cloud formula dust collection method, by automobile engine tail gas outlet in test It is connected with the charging aperture of cloud formula dust pelletizing system, and add a certain proportion of alkaline solution in the solution of mist generator, profit With the negative pressure of air-introduced machine, the tail gas that electromotor is produced passes sequentially through mist generator, granular grows area, cloud formula cleaner unit, Exit measures fine particle, CO, NO and SO respectively2Concentration, and calculate its removal efficiency.Removal efficiency is as shown in the table.
As can be seen from the table, cloud formula dust collection method can reach 98% to the removal efficiency of fine particle in vehicle exhaust, And NO, SO can be removed completely2Etc. harmful gass.
From three above test Comparative result analysis as can be seen that the present invention range very wide, commercial production, Indoor air purification, automobile exhaust pollution have more considerable dust removing effects in administering, and the collection to fine particle PM2.5 Effect is obvious.For increasing of current in the air fine particle, we must not think little of its impact to human body health.But The dust arrester efficiency that presently, there are is generally low, especially to fine particle(PM2.5)Removal very pessimistic.Cloud formula dust pelletizing system Abandon the principle filtering in traditional dust collection method and adhering to and method, made full use of " cloud " physicss, make fine particle first Particle size growth, promotes it effectively to collect.It may be said that cloud formula dust pelletizing system plays the progress of important breakthrough to the collection of PM2.5.

Claims (8)

1. a kind of cloud formula dust pelletizing system it is characterised in that:This dust pelletizing system includes producing the device of relative humidity supersaturation water smoke, The supersaturation water steam that this device generates is sufficiently mixed with fine particle in the flow field of disturbance, and saturated vapor is with fine grained Thing liquefies for the nuclei of condensation and is attached to fine particle surface, so that fine particle particle diameter is constantly increased, to improve the parent of fine particle Aqueouss energy, and increase volume and the weight of fine particle, and then facilitation is played in the trapping to fine particle;Same with this When, the drop in supersaturation water smoke and fine particle mutually collide, and merge, reunion microphysical processes, to promote further Trapping to fine particle;And discharge substantial amounts of anion during being somebody's turn to do and produce electrostatic reaction with fine particle, be conducive to The sedimentation of fine particle;
Described device is charging aperture foremost(1), this charging aperture(1)Successively with mist generator(2), granular grows area(3), cloud Formula dust arrester(5), air-introduced machine(7), exit concentration measurement region(8)Sealing connection;Granular grows area(3)Bottom connects dirt discharge groove (4);Cloud formula dust arrester(5)Bottom connects ash exhauster(6)And granular grows area(3)Outlet tangentially connect cloud formula dedusting dress Put(5)Upper end;Described cloud formula dust arrester(5)Main by be coaxially disposed, have each other cavity, seal each other every From central cylinder(14), middle cylinder(27), outer cylinder body(23)Composition, the bottom of this three cylinder is cone structure and middle Cylinder(27)And outer cylinder body(23)Cone distal end be inside and outside underflow opening(10、24), this inside and outside underflow opening(10、24)By method Orchid and ash exhauster(6)Connect;Granular grows area(3)Outlet and described middle cylinder(27)With outer cylinder body(23)Between cavity The tangential entry of upper end(22)Insertion;Several small cyclones separators(28)In being uniformly fixed on the center of three cylinders for axle Between cylinder(27)Inwall on;Middle cylinder(27)It is connected with base plate with the junction of its underpart cone(11), this base plate(11) Outer rim and middle cylinder(27)Inwall between leave air inlet annular distance(26);Several small cyclones separators described(28)Bottom Portion's discharging opening(9)It is fixed on base plate(11)Go up and and middle cylinder(27)The cone insertion of bottom;Several small cyclones described Separator(28)Upper end have air inlet(29), this air inlet(29)And middle cylinder(27)Inner chamber insertion;This several Small cyclones separator(28)Bend pipe is passed through in the outlet of upper end(12)And central cylinder(14)Insertion;Described bend pipe(12)It is placed in The top cover at outer cylinder body top(13)Sealing, this top cover(13)On have outlet(15).
2. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Described mist generator(2)It is ultrasonic Ripple atomising device or shower nozzle atomising device.
3. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Described ash exhauster(6)The port of export is adopted Use water-stop.
4. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Described granular grows area(3)Erect or Accumbency is placed.
5. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Described mist generator(2)And granule Vitellarium(3)Become one.
6. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Dust-contained airflow is in described granular grows area (3)Stop more than 2s.
7. a kind of cloud formula dust pelletizing system according to any one of claim 2 to 6 it is characterised in that:Described bend pipe(12) The angle of the section of outlet and horizontal plane is 90oTo 180o.
8. a kind of cloud formula dust pelletizing system according to claim 1 it is characterised in that:Described ash exhauster(6)By bed material groove (17), connection valve(19), U-tube(20)Composition;Described bed material groove(17)One end and described inside and outside underflow opening(10、24)Pass through Flange(16)Connect, the other end passes through connection valve(19)With U-tube(20)Connect, this U-tube(20)The other end be sewage draining exit (21);Bed material groove(17)Bottom be provided with blowoff valve(18).
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