CN106621665A - Combined ultrafine particle coagulation box - Google Patents

Combined ultrafine particle coagulation box Download PDF

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Publication number
CN106621665A
CN106621665A CN201611226209.5A CN201611226209A CN106621665A CN 106621665 A CN106621665 A CN 106621665A CN 201611226209 A CN201611226209 A CN 201611226209A CN 106621665 A CN106621665 A CN 106621665A
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CN
China
Prior art keywords
coalescence
area
horizontal stripe
coagulation
case
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611226209.5A
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Chinese (zh)
Inventor
刘本志
金建祥
朱雪晴
丁成
杨百忍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yangcheng Institute of Technology
Yancheng Institute of Technology
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Yangcheng Institute of Technology
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Publication date
Application filed by Yangcheng Institute of Technology filed Critical Yangcheng Institute of Technology
Priority to CN201611226209.5A priority Critical patent/CN106621665A/en
Publication of CN106621665A publication Critical patent/CN106621665A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia

Abstract

The invention provides a combined ultrafine particle coagulation box. The whole coagulation box is box-type and is suitable for being arranged between an electric precipitator and a bag precipitator. The coagulation box comprises an air inlet, an air outlet, a coagulation area and an ash bucket, wherein the air inlet is a channel behind the electric precipitator and a flue gas is from the electric precipitator; 2-4 groups of transverse strips are arranged in the coagulation area and are transversely arranged in the coagulation area, the sections of the transverse strips are angular or round and the transverse strips are alternately combined in sequence; the air outlet is located in the lower part of the coagulation area and an overflow channel is arranged in the upper part of the ash bucket; and adsorbents of activated carbon and the like and a coagulant can be sprayed into the coagulation area through a guide tube via a nozzle separately and the coagulated flue gas enters the bag precipitator to be treated. The combined ultrafine particle coagulation box is high in pertinence, wide in adaptive surface, optimized in structure and good in reliability.

Description

Combined ultra-fine grain coalescence case
Technical field
The invention belongs to flue gas ash removal process field, is related to combined ultra-fine grain coalescence case.
Background technology
In recent years, China big and medium-sized cities haze weather is more and more, has had a strong impact on working healthily and the life of city dweller It is living, wherein PM in urban environment2.5(predominantly PM0.4-1.0) too high levels are the main causes for causing haze weather.Therefore, such as What control PM2.5Produce, and reduce its presence, become problem demanding prompt solution.
Chinese patent CN101664623A discloses the ultrafine particle deduster for being related to administer for industrial fumes.Specifically Improved by the electric-bag complex dust collector to existing cascade filtration mode, in the outlet and the import of air-introduced machine of filter bag dedusting mechanism Between be provided with turbulent eddy mechanism, the turbulent eddy mechanism include turbulent eddy room, flue dust inlet tube and flue dust outlet.Turbulent flow Vortex chamber is down the bucket-shaped of isosceles trapezoid for cross section, and its bottom is connected to grey small room.Through second level process containing thinner The flue dust of particulate matter enters flue dust inlet tube, through wind deflector, deflects down air-flow, into turbulent eddy room, more carefully Particulate matter produces diffusion with turbulent eddy chamber interior walls and collision promotes minuteness particle to precipitate, and fine particle is separated from flue dust Out.But the materialization coalescence of fine particle is individually carried out in the handling process with turbulent eddy room, coalescence efficiency is not high.
Chinese patent CN 102423599 A disclose a kind of integration removing industrial discharged superfine and trace contaminant Electric bag composite purification device and purification method.Device, electrostatic precipitation is preliminarily sprayed using adsorbent is disposed with along airflow direction The version of device, ultra-fine grain coalescence device, adsorbent jetting device and bag-type dust collector, there is provided a kind of structure is tight Gather, operating cost is low, maintenance and operation maintenance are convenient, efficient removal is ultra-fine and micro while constant dust pollution thing is removed The integration electricity bag composite purification device of pollutant and purification method.Ultra-fine grain coalescence device is by groups such as positive high voltage sparking electrodes Into.Ultra-fine grain coalescence device does not form good coalescence condition without specific construction in addition to charged.Chinese patent CN 103007670 A control fine particle, cooperate with the electric-bag complex dust collector of demercuration, are related to industrial dust collector.Electric bag composite dedusting Device is provided with electric bag transition region, and electric bag transition region is located between electric field region and bag-type dusting area;Ash bucket is located at the bottom of housing, net gas Room connects located at air-purifying chamber top and with air-purifying chamber located at bag-type dusting area top, exhaust pass;Adsorbent jetting device and suction Attached agent container is connected located at the top of electric bag transition region, the discharging opening of absorbent container with the charging aperture of adsorbent jetting device. Absorbent can be made to be sufficiently mixed with flue gas, absorbent is more evenly distributed, absorbent demercuration effect is more preferable.Electric bag transition region is provided with At least 2 groups positive plates and discharge electrode, positive plate and discharge electrode constitute electric field channel.
Process above equipment, method is complicated, control runs difficult, equipment investment and operating cost is high.
Thus, for coalescence is inefficient, complex process equipment the problems such as, it is necessary on the basis of existing technology, The ultra-fine grain coalescence case of research and development reinforcing coalescence.On the basis of traditional deduster, coalescence processing meanss are set up, make to surpass Fine particle, into larger particles, is existing so as to smoothly remove in follow-up deduster by physical method or physical chemistry method coalescence In the trend of dedusting technology development.
The content of the invention
Goal of the invention:The invention aims to solve the deficiencies in the prior art, a kind of with strong points, adaptive surface is proposed Extensively, constitution optimization, the ultra-fine grain coalescence case of the reinforcing coalescence of good reliability.
Technical scheme:In order to realize the purpose of the present invention, the present invention is adopted the following technical scheme that.
Combined ultra-fine grain coalescence case, whole coalescence case is adapted to mount between electricity-bag dust collector in box;Coalescence Case is made up of air inlet, gas outlet, coalescence area and ash bucket;Air inlet is the passage after electric cleaner, and flue gas is by electric cleaner ;2 ~ 4 groups of horizontal stripes are provided with coalescence area, horizontal stripe is horizontally placed in coalescence area, the section configuration of horizontal stripe is angular and circle, and Alternate combinations successively;Gas outlet is located at coalescence area bottom, and ash bucket top is arranged to flow channels, and the flue gas after Jing coalescences enters Enter sack cleaner to be processed;Ash bucket is arranged at coalescence area lower section, concordant with other ash buckets of electricity-bag dust collector.
Further, the every group of horizontal stripe for arranging in coalescence area is arranged above and below, and the angular opening angle of horizontal stripe is 70 ~ 120 degree; The height of horizontal stripe is 10 ~ 25cm;The section configuration that alternate intervals are arranged is circular horizontal stripe, circular a diameter of 10 ~ 25cm;Angle Shape is consistent with the height of circle;Spacing between adjacent two horizontal stripes takes 1.0 ~ 2.0 times of horizontal stripe height;Two adjacent groups horizontal stripe Between spacing take 1.0 ~ 2.0 times of horizontal stripe section length, shift to install between two adjacent groups horizontal stripe.
Further, in the porch in coalescence area, sieve tray is set, allows air-flow to pass through;Vertically arranged one group after sieve tray Nozzle, nozzle is connected by pipeline with air pump, the adsorbents such as activated carbon can be sprayed into coalescence area by guiding tube Jing nozzles.
Further, one group of nozzle is set in coalescence area, by being sufficiently mixed coalescence accelerator and water with liquid pump, is mixed Coalescence accelerator solution afterwards accesses nozzle Jing after atomization by guiding tube, sprays into coalescence area, forms mist cloud.
Coalescence case operation principle:Through electric cleaner process flue gas subsequently into condensation region, at this moment with ultra-fine in flue gas Particulate matter is in the majority, and by the lower collision cohesion of " turbulent flow coalescence " effect, ultra-fine grain becomes bulky grain, as particle coarsening;Connect And enter into follow-up inside of bag type dust collector, the particle of coarsening is easy to deduster to gather dust, so just reduce ultra-fine grain Discharge.
" turbulent flow coalescence " is referred to by special construction, causes the change of flue gas stream, forms the state of close turbulent flow.It is solidifying And major influence factors be granular size, the cohesion performance of particle and collision probability.Turbulent flow considerably increases particle in flue gas Collision probability.Due to the special tectonic of coalescer so that branch's air-flow intersection becomes turbulent flow coalescence and mainly sends out in coalescer Raw region.On the basis of chemical coalescence, further by turbulent flow coalescence, overall coalescence effect is enhanced.Sieve tray plays whole The effect of stream and uniform air-flow.It is streamlined when air-flow is by circular horizontal stripe, reduce pressure while turbulent flow coalescence is formed Drop.
Chemical coalescence principle:The coalescence accelerator of penetrating is formed with after crushing certain angle of flare under atomizer effect The mist cloud of degree and surface with higher adhesion activity, mist cloud is adsorbed in fly ash granule surface, liquid bridge is produced between particles, In flue before sack cleaner, and then Gu Qiao is converted into, promotes particle coalescence, make fine particle form larger agglomerate, with And fine particle is adsorbed by coarse granule.
The acticarbon injection apparatus that the present invention is adopted, is to spray into powdered active carbon before particle coalescence, is passed through The suction-operated of acticarbon to remove flue gas in mercury.It is the most effective removal of mercury that acticarbon is sprayed into flue gas One of method.Adsorbent is that the cellular of formation, specific surface area are enriched after the modified activation of flyash with certain phosphorus content Particulate matter, while have physics and chemisorbed function, its average grain diameter at 20 μm or so, specific surface area>55m2/ g, flying dust Phosphorus content is 6% ~ 7% or so.
Beneficial effect:The device that the present invention is provided is compared with advantages below with existing apparatus.
(1)By special tectonic provided by the present invention, various coalescence synergies, coalescence efficiency, PM are improve2.5Account for , compared with declining 40% ~ 60% before coalescence, mass concentration is compared with decline 5 ~ 15% before coalescence for the number concentration of particle in flue dust.
(2)Coalescence case provided by the present invention substantially reduces PM2.5Discharge.The present invention is mainly by sack cleaner It is front that coalescence is carried out to superfine particulate matter, enable to be removed in the presence of sack cleaner, the device that the present invention is provided Removal efficiency of the electricity-bag dust collector to superfine particulate matter can be improved, the discharge of ultra-fine flue dust is reduced.Can remove in equal Under conditions of the working condition and collection mode of dirt device, PM in flue dust2.5Clearance improves 40% ~ 60%.
(3)The each several part of coalescence case provided by the present invention, rationally, function is compatible to be matched subregion.
(4)Coalescence case provided by the present invention creates condition for the volume reduction of electricity-bag dust collector.
(5)Coalescer provided by the present invention is vdiverse in function, flexible adjustment, the adsorbent reinforcement removal of mercury such as penetrating activated carbon, The toxic heavy metals such as arsenic, spraying into chemical polymeric sorbent can reinforcing coalescence effect;With the system phase of multi-pollution control Than, realize it is multi-functional under the premise of, reduce investment, simplify operation, drag losses is little, and reduced pressure reduces energy consumption, Operating cost is low.
(6)Coalescence case provided by the present invention is easy for installation, adapts to wide, is suitable to locate in advance before various sack cleaners Reason, also improves adaptability of the electricity-bag dust collector to various different industrial fumes.
(7)Coalescence case provided by the present invention provides new thinking for the transformation of electric cleaner.
Description of the drawings
The combined ultra-fine grain coalescence box structure schematic diagram that Fig. 1 is provided for the present invention.
Fig. 2 is ultra-fine grain coalescence principle schematic in the present invention.
In Fig. 1, in 2:1:Electric cleaner, 2:Sack cleaner, 3:Coalescence case, 4:Air inlet, 5:Coalescence area, 6:Go out Gas port, 7:Ash bucket, 8:Angular horizontal stripe, 9:Particle before coalescence, 10:Tie big particle after coalescence, 11:Sieve tray, 12:Guiding Pipe I, 13:Nozzle, 14:Guiding tube II, 15:Baffle plate, 16:Circular horizontal stripe, A:The main generation area of turbulent flow coalescence.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is further elucidated.
Embodiment 1
Certain industrial fumes waste gas, treating capacity is 80000m3The coalescence case that/h is provided using the present invention.Whole coalescence case in box, It is adapted to mount between electricity-bag dust collector;Coalescence case is made up of air inlet, gas outlet, coalescence area and ash bucket;Air inlet is electricity Passage after deduster, flue gas is by electric cleaner;4 groups of horizontal stripes are provided with coalescence area, horizontal stripe is horizontally placed in coalescence area, The section configuration of horizontal stripe is angular and circle, and alternate combinations successively;Gas outlet is located at coalescence area bottom, and ash bucket top is arranged Into flow channels, the flue gas after Jing coalescences is processed into sack cleaner;Ash bucket be arranged at coalescence area lower section, with electricity- Other ash buckets of bag dust collector are concordant.
The every group of horizontal stripe arranged in coalescence area is arranged above and below, and the angular opening angle of horizontal stripe is 90 degree;The height of horizontal stripe is 15cm;The section configuration that alternate intervals are arranged is circular horizontal stripe, circular a diameter of 15cm;Between between adjacent two horizontal stripes Away from taking 1.5 times of horizontal stripe height;Spacing between two adjacent groups horizontal stripe takes 1.5 times of horizontal stripe section length, two adjacent groups horizontal stripe Between shift to install.In fig. 2, A is the region that turbulent flow coalescence mainly occurs.
In the porch in coalescence area, sieve tray is set, allows air-flow to pass through;Vertically arranged one group of nozzle, nozzle after sieve tray It is connected with air pump by pipeline, the adsorbents such as activated carbon can be sprayed into coalescence area by guiding tube Jing nozzles.
One group of nozzle is set in coalescence area, by coalescence accelerator and water are sufficiently mixed with liquid pump, mixed coalescence Accelerator solution accesses nozzle Jing after atomization by guiding tube, sprays into coalescence area, forms mist cloud.Coalescence accelerator accounts for the matter of water Amount percentage is 1.5%;Coalescence accelerator solution flow accounts for flue gas flow percent by volume for 0.1%.Jing after bag-type dusting process Flue gas, the flue gas of discharge standard is reached after air-introduced machine is by purification and is discharged from aiutage.
Being processed using the device makes ultra-fine flue dust coalescence into the particle of greater particle size, and is taken off by sack cleaner Remove.The coalescence case provided using the present invention, carries out reinforcing coalescence, is followed by sack cleaner, the total efficiency of dust collection of whole technique More than 99.98%, dust contained flue gas concentration of emission is less than 20mg/Nm3, PM2.5Clearance improves 60%.

Claims (4)

1. combined ultra-fine grain coalescence case, it is characterised in that:Whole coalescence case is adapted to mount to electricity-bag dust collector in box Between;Described coalescence case is made up of air inlet, gas outlet, coalescence area and ash bucket;Described air inlet is after electric cleaner Passage, flue gas is by electric cleaner;2 ~ 4 groups of horizontal stripes are provided with described coalescence area, horizontal stripe is horizontally placed in coalescence area, it is horizontal The section configuration of bar is angular and circle, and alternate combinations successively;Described gas outlet is located above coalescence area bottom, ash bucket, It is arranged to flow channels, the flue gas after Jing coalescences is processed into sack cleaner;Described ash bucket is arranged at coalescence area Lower section, it is concordant with other ash buckets of electricity-bag dust collector.
2. coalescence case as claimed in claim 1, the every group of horizontal stripe arranged in coalescence area is arranged above and below, the angular angular aperture of horizontal stripe Spend for 70 ~ 120 degree;The height of horizontal stripe is 10 ~ 25cm;The section configuration that alternate intervals are arranged is circular horizontal stripe, and circular is straight Footpath is 10 ~ 25cm;It is angular consistent with circular height;Spacing between adjacent two horizontal stripes takes the 1.0 ~ 2.0 of horizontal stripe height Times;Spacing between two adjacent groups horizontal stripe takes 1.0 ~ 2.0 times of horizontal stripe section length, shifts to install between two adjacent groups horizontal stripe.
3. coalescence case as claimed in claim 1, in the porch in coalescence area, arranges sieve tray, allows air-flow to pass through;After sieve tray Vertically arranged one group of nozzle, nozzle is connected by pipeline with air pump, can be sprayed the adsorbents such as activated carbon by guiding tube Jing nozzles Enter coalescence area.
4. coalescer as claimed in claim 1, arranges one group of nozzle in coalescence area, by with liquid pump by coalescence accelerator and water It is sufficiently mixed, mixed coalescence accelerator solution accesses nozzle Jing after atomization by guiding tube, sprays into coalescence area, forms mist Cloud.
CN201611226209.5A 2016-12-27 2016-12-27 Combined ultrafine particle coagulation box Pending CN106621665A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871139A (en) * 2020-08-09 2020-11-03 盐城工学院 Rhombus superfine particle coalescence box
CN111871135A (en) * 2020-08-07 2020-11-03 盐城工学院 Oval horizontal bar pipeline type ultrafine particle condenser
CN111871141A (en) * 2020-08-09 2020-11-03 盐城工学院 Fan-shaped pipeline type ultrafine particle condenser
CN111871136A (en) * 2020-08-09 2020-11-03 盐城工学院 Crescent horizontal bar pipeline type ultrafine particle condenser
CN111871140A (en) * 2020-08-09 2020-11-03 盐城工学院 Oval superfine particle coalescence case

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919696A (en) * 1987-10-30 1990-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Supercooling type mist eliminator apparatus
CN103495322A (en) * 2013-09-17 2014-01-08 西安理工大学 Dust removal and mercury removal integrated device and method
CN104069712A (en) * 2014-07-06 2014-10-01 盐城工学院 Chemical coagulation-based 'electricity-bag' integrated compound dust removing process
CN204380469U (en) * 2015-01-04 2015-06-10 中电投远达环保工程有限公司 Fume dust remover
CN104801420A (en) * 2015-05-13 2015-07-29 东南大学 Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling
CN106731434A (en) * 2016-12-27 2017-05-31 盐城工学院 A kind of combined ultra-fine grain coalescence case

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919696A (en) * 1987-10-30 1990-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Supercooling type mist eliminator apparatus
CN103495322A (en) * 2013-09-17 2014-01-08 西安理工大学 Dust removal and mercury removal integrated device and method
CN104069712A (en) * 2014-07-06 2014-10-01 盐城工学院 Chemical coagulation-based 'electricity-bag' integrated compound dust removing process
CN204380469U (en) * 2015-01-04 2015-06-10 中电投远达环保工程有限公司 Fume dust remover
CN104801420A (en) * 2015-05-13 2015-07-29 东南大学 Device and method for increasing grain size of PM2.5 (particulate matter2.5) through turbulent flow and chemical agglomeration coupling
CN106731434A (en) * 2016-12-27 2017-05-31 盐城工学院 A kind of combined ultra-fine grain coalescence case

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871135A (en) * 2020-08-07 2020-11-03 盐城工学院 Oval horizontal bar pipeline type ultrafine particle condenser
CN111871139A (en) * 2020-08-09 2020-11-03 盐城工学院 Rhombus superfine particle coalescence box
CN111871141A (en) * 2020-08-09 2020-11-03 盐城工学院 Fan-shaped pipeline type ultrafine particle condenser
CN111871136A (en) * 2020-08-09 2020-11-03 盐城工学院 Crescent horizontal bar pipeline type ultrafine particle condenser
CN111871140A (en) * 2020-08-09 2020-11-03 盐城工学院 Oval superfine particle coalescence case

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Application publication date: 20170510