CN106139801B - A kind of electric bag composite dedusting experimental rig, test method - Google Patents
A kind of electric bag composite dedusting experimental rig, test method Download PDFInfo
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- CN106139801B CN106139801B CN201610638861.1A CN201610638861A CN106139801B CN 106139801 B CN106139801 B CN 106139801B CN 201610638861 A CN201610638861 A CN 201610638861A CN 106139801 B CN106139801 B CN 106139801B
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Abstract
The invention discloses a kind of electric bag composite dedusting experimental rig, including device body, combustion system, air and gas system and detecting system；Device body includes housing, electric dust collector, bag dust arrester；Combustion system includes Pulverized Coal Bin and the boiler being connected with each other；Air and gas system includes pressure fan, air-introduced machine and air bypass flue；Detecting system, includes the second gaging hole of the first gaging hole located at inlet flue duct, the entrance located at bag dust arrester, located at the 3rd gaging hole of exhaust pass；And, detect the detection part of the dust concentration of each gaging hole.In dust removal process, the second flue gas concentration after the first flue gas concentration before flue gas ash removal, electric dust collector, the 3rd flue gas concentration after bag dust arrester can be detected respectively by the first gaging hole, the second gaging hole, the 3rd gaging hole, and then obtain efficiency of dust collection, the efficiency of dust collection of bag dust arrester of electric dust collector.The present invention also provides a kind of electric bag composite dedusting test method based on above-mentioned experimental rig.
Description
Technical field
The present invention relates to dedusting technology field, more particularly to a kind of electric bag composite dedusting experimental rig, test method.
Background technology
In recent years, many ground of China frequently break out haze weather, and regional pollution becomes clear day by day.In severe Environmental Protection Situation
Under, country has put into effect multinomial environmental protection policy, and environmental requirement is further strict.But, the primary energy of China's " few oily lean gas of many coals "
Natural endowment determines the energy supply general layout with coal fired power generation by long-term existence, and Thermal Power Generation Industry faces huge emission reduction.2015
The end of the year, country puts into effect the programme of work for implementing in full coal-burning power plant's minimum discharge, wherein, it is desirable to soot emissions are less than 10mg/
Nm3, therefore, coal-burning power plant must take efficient, stable dedusting technology, effectively to control micro soot emissions.
In dust removal field, electric-bag complex dust collector is with the excellent properties of its efficient stable low emission, in recent years in coal-fired electricity
Factory's dust removal field has obtained more wide application.Meanwhile, research staff passes through multinomial technological innovation and performance improvement so that
Electric-bag complex dust collector outlet soot emissions meet the requirement of minimum discharge and highly reliable.
Existing electric bag composite dedusting experimental rig is often the diminution model made according to the principle of similitude, the letter of its structure
Single, test capability is weaker, is only capable of carrying out the overall performance research of electric-bag complex dust collector, for example, inlet flue duct assignment of traffic, entering
The air flow methods such as one's intention as revealed in what one says speed uniformity are tested, the experimental study of the macroscopic view such as overall resistance test.
In addition, Chinese patent 201520228635.7 discloses a kind of combined Dust Removal Experiment device, its structure belongs to electricity
Dedusting and bag dedusting split-type structural, can be combined the dust removal performance experiment of formula dedusting technology, including electrostatic precipitator and cloth
Bag dust collector.
But, Dust Removal Experiment device of the prior art has the disadvantage that：
First, departing from the core study mechanism of electric bag composite dedusting, for example, during electric bag composite dedusting can not be measured
Grade dust-collection efficiency, Best Coupling ratio research etc. that electric area and bag area can not be carried out.
Second, the experimental study of macroscopic view can only be carried out, it is impossible to internally or from microcosmic upper tested.
3rd, existing experimental rig can only carry out cold test, can not carry out hot test, and in fact, possessing hot
The device of experimental condition could preferably study electric bag composite dedusting mechanism.
In view of this, it would be highly desirable to for above-mentioned technical problem, a kind of new electric bag composite dedusting experiment is designed with looking for another way
Device, so as to the composite dedusting mechanism for electric precipitation and bag dedusting combination, carries out electric-bag complex dust collector overall performance
With dust removal mechanism research, with the service life for improving electric-bag complex dust collector performance, extending electric-bag complex dust collector, and adapt to super
Low emission.
The content of the invention
The purpose of the present invention is provides a kind of experimental rig of electric bag composite dedusting, to have for electric precipitation and bag dedusting
The composite dedusting mechanism that machine is combined, carries out electric-bag complex dust collector overall performance and dust removal mechanism research, is combined with improving electric bag
Performance of precipitator, the service life for extending electric-bag complex dust collector, and adapt to minimum discharge.In addition, another object of the present invention
To provide a kind of test method of electric bag composite dedusting.
In order to solve the above technical problems, the present invention provides a kind of electric bag composite dedusting experimental rig, including device body, combustion
Burning system, air and gas system and detecting system；
Described device body includes housing, electric dust collector, bag dust arrester in the housing；
The combustion system includes Pulverized Coal Bin and the boiler being connected with each other；
The air and gas system includes pressure fan, air-introduced machine, and the pressure fan connects the electric precipitation by inlet flue duct and filled
The entrance put, the inlet flue duct is provided with air bypass flue, and the air-introduced machine connects the bag dedusting by exhaust pass
The outlet of device；
The detecting system, including the first gaging hole located at the inlet flue duct, the entrance located at the bag dust arrester
The second gaging hole, located at the 3rd gaging hole of the exhaust pass；And, detect the detection part of the dust concentration of each gaging hole.
Using this structure, in dust removal process, the first flue gas concentration before flue gas ash removal can be detected by the first gaging hole,
Second flue gas concentration of the flue gas after electric dust collector is detected by the second gaging hole, detects that flue gas passes through bag by the 3rd gaging hole
The 3rd flue gas concentration after dust arrester, electric precipitation is obtained by the first flue gas concentration, the second flue gas concentration, the 3rd flue gas concentration
Efficiency of dust collection, the efficiency of dust collection of bag dust arrester of device.
Compared with prior art, above-mentioned electric bag composite dedusting experimental rig can simply, easily be tested by each gaging hole
The grade dust-collection efficiency of electric bag dust process, and then understand the performance of current composite dedusting, consequently facilitating being removed according to current classification
Dirt efficiency adjusts electric dust collector, bag dust arrester respectively, to reach the purpose for increasing its efficiency of dust collection.
Preferably, in addition to fume recovery system and control system, the fume recovery system include by ash pipeline according to
The first gray back pump, dust storage tank, the second gray back pump, the dust gravimetric tank of secondary connection, the ash pipeline are returned close to described first
The first end of grey pump connects the Pulverized Coal Bin, each ash of the housing is connected close to the second end of the second dust gravimetric tank
Bucket；
The control system is including the dust return valve in the first end of the ash pipeline, located at the ash pipeline
The second end each ash bucket exit ash discharge valve；
The test system also includes the weighing instrument being located under the dust gravimetric tank.
Preferably, the control system is also including the inlet damper on the inlet flue duct, located at the bypass cigarette
Bypass air door on road.
Preferably, the detecting system also includes inlet pressure test component, the inlet temperature for being located at the inlet flue duct
Test component, located at the outlet pressure test component of the exhaust pass.
The present invention also provides a kind of test method of electric bag composite dedusting experimental rig, the experimental rig include being located at into
First gaging hole of mouthful flue, second survey located at the outlet of electric dust collector of the experimental rig or the entrance of bag dust arrester
Hole, located at the 3rd gaging hole of exhaust pass；Detecting step including grade dust-collection efficiency：
Pass through the first flue gas concentration before first gaging hole detection flue gas ash removal；
Second flue gas concentration of the flue gas after the electric dust collector is detected by second gaging hole；
Threeth flue gas concentration of the flue gas after the bag dust arrester is detected by the 3rd gaging hole；
The electric precipitation is obtained by first flue gas concentration, second flue gas concentration, the 3rd flue gas concentration
The efficiency of dust collection of the efficiency of dust collection of device, the bag dust arrester.
In this way, compared with prior art, above-mentioned electric bag composite dedusting experimental rig can pass through the letter of each gaging hole
Grade dust-collection efficiency that is single, easily testing electric bag dust process, and then the performance of the current composite dedusting of understanding, consequently facilitating root
Electric dust collector, bag dust arrester are adjusted respectively according to current classification efficiency of dust collection, to reach the purpose for increasing its efficiency of dust collection.
Preferably, in addition to air flow method Optimal Experimental step：The inlet flue duct is detected by first gaging hole
Import wind speed, the three-dimensional air intake ratio of the bottom, front, side of bag dust arrester is obtained according to the import wind speed；
The three-dimensional air intake ratio and default standard three-dimensional air intake ratio are compared, if the former with the latter,
The three-dimensional air intake ratio is adjusted to standard three-dimensional air intake ratio, if the former is equal to the latter, present situation is kept.
Preferably, the experimental rig also includes control system, and the control system is included on the inlet flue duct
Inlet damper, the bypass air door on the bypass flue；
The air flow method Optimization Steps are bypassed before the import wind speed is detected by closing inlet damper, opening
Air door switches to cold conditions pattern, or, switch to hot pattern by opening inlet damper, closing bypass air door.
Preferably, in addition to electric area, bag area Best Coupling test procedure：Choose the ratio dust depositing surface of a variety of electric dust collectors
The air cloth ratio of long-pending, a variety of bags of dust arresters carries out multiple combinations, detects the electric bag composite dedusting experimental rig under every kind of combination
Efficiency of dust collection, choose highest efficiency of dust collection therein and corresponding to the highest efficiency of dust collection than laying dust area, gas cloth
The best of breed of ratio, electric dust collector, bag dust arrester are configured with the best of breed.
Preferably, in addition to electric area optimal pole match somebody with somebody pattern step：Choose the pole of the negative electrode of a variety of electric dust collectors
Multiple combinations are carried out with pattern, multiple power sources pattern, the efficiency of dust collection of the electric dust collector under every kind of combination is detected, chooses it
In highest efficiency of dust collection and pole corresponding to the highest efficiency of dust collection match somebody with somebody pattern, the optimum combination of power supply pattern, use institute
State optimum combination and configure the negative electrode, the power supply.
Preferably, in addition to the coagulation of fine particle and experiment in flue gas：Detected by first gaging hole before dedusting
First particle diameter of particulate matter in flue gas；
The second particle diameter of particulate matter in the flue gas after electric precipitation is detected by second gaging hole；
The coagulation and efficiency of fine particle in flue gas are obtained according to first particle diameter, second particle diameter.
Preferably, in addition to media performance experiment：
Choose different atures of coal and carry out the different flue gases of burning generation, and make the different flue gas respectively by default many
Different filtrates are planted, and then obtain the performance variation law that different filtrates are directed to different flue gases.
Preferably, the experimental provision also includes fume recovery system and control system, and the fume recovery system includes
The first gray back pump, dust storage tank, the second gray back pump, the dust gravimetric tank being sequentially connected by ash pipeline, the ash pipeline are leaned on
The first end of the nearly first gray back pump connects the Pulverized Coal Bin, connects described close to the second end of the second dust gravimetric tank
Each ash bucket of housing；The control system is including the dust return valve in the first end of the ash pipeline, located at described
The ash discharge valve in each ash bucket exit at the second end of ash pipeline；The test system also includes claiming located at the dust
Weighing instrument under weight tank；
The test method also includes dust recovery, rate-determining steps：
Any ash discharge valve, the second gray back pump are opened, the dust in the ash bucket is delivered in dust gravimetric tank and returned
Receive, and the dust of recovery is weighed by weighing instrument, matched；
The first gray back pump is opened, the dust in dust storage tank is delivered to the first end of ash pipeline, and by changing not
Same ature of coal, the aperture control dust of the regulation dust return valve enter the Dust Capacity of inlet flue duct.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the experimental rig of electric bag composite dedusting provided by the present invention
Figure；
Fig. 2 is the structural representation at I in Fig. 1；
Fig. 3 is the structural representation at II in Fig. 1；
Fig. 4 is the structural representation at III in Fig. 1；
Fig. 5 is the top view of housing in Fig. 1；
Fig. 6 is a kind of embodiment of the test method of the experimental rig of electric bag composite dedusting provided by the present invention
FB(flow block).
Wherein, Fig. 1 is into Fig. 5：
Device body 1；Import loudspeaker 101；Suspend vibrated system 102 in midair；Anode system 103；Cathod system 104；Pulse is sprayed
Blow system 105；First filter bag area 106；Second filter bag area 107；Air-purifying chamber 108；Housing 109；Ash bucket 110；Gasification board 111；
First support beam 109-1；First stopper slot 109-2；Side enabling 109-3；Sealing strip 109-4；
Suspend fine strain of millet 103-2 in midair；Positive plate 103-3；First locating part 103-1；
Hanger bracket 104-1；Cathode frame 104-2；Second stopper slot 104-1a；Second locating part 104-2a；
Hang vibrated system 102；Suspending rod 102-1；Support bar 102-2；
Card 108-1；Second support beam 108-2；Bolt assembly 108-4；Latch segment 108-3；Sealing ring 108-5；
Combustion system 2；Boiler 201；Pulverized Coal Bin 202；
Air and gas system 3；Pressure fan 301；Inlet flue duct 302；Air bypass flue 303；Air-introduced machine 304；Exhaust pass
305；
Control system 4；Inlet damper 401；Bypass air door 402；Dust return valve 403；Ash discharge valve 404；
Detecting system 5；Inlet pressure test component 501；Inlet temperature test component 502；First gaging hole 503；Second surveys
Hole 504；First bag of area entrance gaging hole 504-1；Second bag of area entrance gaging hole 504-2；3rd gaging hole 506；Outlet pressure test department
Part 507；Weighing instrument 508.
Fume recovery system 6；Dust gravimetric tank 601；Dust storage tank 602；First gray back pump 603；Second gray back pump
604；Ash pipeline 605.
Embodiment
The core of the present invention is provides a kind of experimental rig of electric bag composite dedusting, to have for electric precipitation and bag dedusting
The composite dedusting mechanism that machine is combined, carries out electric-bag complex dust collector overall performance and dust removal mechanism research, is combined with improving electric bag
Performance of precipitator, the service life for extending electric-bag complex dust collector, and adapt to minimum discharge.In addition, another core of the present invention
To provide a kind of test method of electric bag composite dedusting.
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
Applying example, the present invention is described in further detail.
It should be noted that the herein presented noun of locality " bottom " refers to the bottom in Fig. 1, " front " refers to figure
The direction of left and right extension in 1, " side " is referred in Fig. 1 perpendicular to the direction of paper；It should be appreciated that the appearance of these nouns of locality
It is to be set up on the basis of the habitual appellation and Figure of description of this area, their appearance should not influence the present invention
Protection domain.
Fig. 1 is refer to, Fig. 1 is a kind of embodiment of the experimental rig of electric bag composite dedusting provided by the present invention
Structural representation.
In a kind of embodiment, as shown in figure 1, the present invention provides a kind of experimental rig of electric bag composite dedusting,
Including device body 1, combustion system 2, air and gas system 3 and detecting system 5.Device body 1 includes housing 109, located at housing 109
Interior electric dust collector, bag dust arrester, electric dust collector generally include anode system 103, cathod system 104, bag dedusting system
System can only set a filter bag area, can also include the first filter bag area 106；Second filter bag area 107；Or more filter bag areas.
In addition, the effect in order to strengthen bag dedusting, can also set pulse spraying equipment 105 in the top of bag dust arrester.Burning system
System 2 includes Pulverized Coal Bin 202 and the boiler 201 being connected with each other.Air and gas system 3 includes pressure fan 301, air-introduced machine 304, pressure fan
301 connect the entrance of electric dust collector by inlet flue duct 302, and the entrance can be specially import loudspeaker 101, inlet flue duct
302 are provided with air bypass flue 303, the outlet that air-introduced machine 304 passes through the connecting bag dust arrester of exhaust pass 305.Detection system
System 5, includes the second gaging hole 504 of the first gaging hole 503 located at inlet flue duct 302, the entrance located at bag dust arrester, is located at out
3rd gaging hole 506 of mouth flue 305；And, detect the detection part of the dust concentration of each gaging hole.
Using this structure, in dust removal process, it can detect that the first flue gas before flue gas ash removal is dense by the first gaging hole 503
Degree, detects second flue gas concentration of the flue gas after electric dust collector by the second gaging hole 504, is detected by the 3rd gaging hole 506
Threeth flue gas concentration of the flue gas after bag dust arrester, passes through the first flue gas concentration, the second flue gas concentration, the 3rd flue gas concentration
Obtain efficiency of dust collection, the efficiency of dust collection of bag dust arrester of electric dust collector.
Compared with prior art, above-mentioned electric bag composite dedusting experimental rig can simply, easily be tested by each gaging hole
The grade dust-collection efficiency of electric bag dust process, and then understand the performance of current composite dedusting, consequently facilitating being removed according to current classification
Dirt efficiency adjusts electric dust collector, bag dust arrester respectively, to reach the purpose for increasing its efficiency of dust collection.
Specifically, for only including the bag dust arrester in a Ge Dai areas, the number of above-mentioned second gaging hole 504 can be
One；For the bag dust arrester including Liang Gedai areas, the number of the second gaging hole 504 can be two, respectively first
Bag area entrance gaging hole 504-1；Second bag of area entrance gaging hole 504-2, the two is respectively arranged on the first filter bag area 106, the second filter bag area
107 porch.
In further scheme, above-mentioned electric dust collector, the bag dust arrester detachably connect with the housing 109
Connect.
With electric dust collector in the prior art, bag dust arrester compared with the structure that housing 109 is fixedly connected, using this
Structure is planted, is easy to the operations such as electric dust collector, the installation of bag dust arrester, dismounting, and later period maintenance.
In specific scheme, as shown in Fig. 2 the anode system 103 of above-mentioned electric dust collector includes the sun being detachably connected
Pole plate 103-3 and suspention beam 103-2, the housing 109 is provided with the first support beam 109-1, the first support beam 109-1, institute
One of both suspention beam 103-2 are stated provided with the first stopper slot 109-2, another one provided with installation the first stopper slot 109-
The first locating part 103-1 in 2, and the first support beam 109-1, the suspention beam 103-2 be detachably connected.
Using the first support beam 109-1 provided with the first stopper slot 109-2, suspention beam 103-2 provided with the first locating part 103-1 as
The installation process of example explanation anode system 103：
In installation process, only suspention beam 103-2 the first locating part 103-1 correspondences need to be installed on the first stopper slot 109-
In 2, then suspention beam 103-2 is connected in one with the first support beam 109-1.In unloading process, only need first by suspention beam 103-2
Taken apart from the first support beam 109-1, then the first locating part 103-1 is taken out from the first stopper slot 109-2.First is spacing
Spacing effect is played in groove 109-2, the cooperation of the first limited block, and the two connection is further ensured that the position of anode system 103 can
By property.
Specifically, the first stopper slot 109-2 can be the groove of opening upwards, and the first locating part 103-1 can be to include
The kink of horizontal segment, vertical section, the vertical section is plugged in downwards in the first stopper slot 109-2.In addition it is also possible to will
First stopper slot 109-2 is set to the groove of right side or left side opening, and the first locating part 103-1 can be horizontally disposed post
Shape.First stopper slot 109-2, the first locating part 103-1 concrete shape, structure can have varied, such as circular, square
Deng.First support beam 109-1, suspention beam 103-2 connected mode can also be varied, such as bolt connection, mode connects for screw
Deng.
As shown in figure 3, above-mentioned electric dust collector also includes suspention vibrated system 102, the cathod system 104 of electric dust collector
Including the cathode frame 104-2 and hanger bracket 104-1 being detachably connected, the suspention vibrated system 102 includes what is be connected with each other
Suspending rod 102-1 and one of support bar 102-2, the hanger bracket 104-1, both support bar 102-2 are provided with second
Stopper slot 104-1a, another one are provided with the second locating part 104-2a being installed in the second stopper slot 104-1a, so that institute
Hanger bracket 104-1 is stated to hang on the support bar 102-2.
In installation process, only hanger bracket 104-1 and support bar 102-2 need to be passed through the second locating part 104-2a, the second limit
Position groove 104-1a coordinates, you can hang on hanger bracket 104-1 on support bar 102-2., only need to be spacing by second in unloading process
Part 104-2a takes out from the second stopper slot 104-1a.Specifically, the second locating part 104-2a can be to be connected by bolt
The angle steel on the support bar 102-2 is connected to, the second stopper slot 104-1a can be elongated jack, the one of the angle steel
Individual side is plugged in the jack.It is contemplated that the second locating part 104-2a can also be other various structures, for example, can be with
Pin being fixed on for bolt on the support bar 102-2, etc..
As shown in figure 4, also including horizontally disposed card 108-1 in above-mentioned housing 109, the filter bag of bag dust arrester is installed
In being additionally provided with the second horizontal support beam 108-2, the bag dust arrester in the lower section of the card 108-1, the housing 109
Also include the clamping part card 108-1 being clamped on the second support beam 108-2.
Clamping part plays a part of connecting card 108-1 and the second support beam 108-2, and does not destroy card 108-1's
Structure so that card 108-1 service life extension.The supporting part can specifically include bolt assembly and latch segment 108-3, lock
Tight block 108-3 one end is pressed in card 108-1 top, the other end and is connected by bolt assembly with the second support beam 108-2.
The clamping part can also use other structures, for example, it can include two grip blocks, two grip blocks are set respectively
It is connected with card 108-1 top, the lower section of support beam top plate, then by two grip blocks, it is same to realize clamping two
The effect of person.
Further, it is additionally provided with sealing ring 108-5 between card 108-1 and the second support beam 108-2.
So so that very close to each other between card 108-1, the second support beam 108-2, it is to avoid flue gas without filter bag mistake
Filter, the gap directly between card 108-1 and the second support beam 108-2 are flowed through so that flue gas is only capable of by entering above filter bag
Enter the air-purifying chamber 108 above card 108-1, it is ensured that the efficiency of dust collection of bag dust arrester.
In another embodiment, as shown in figure 5, above-mentioned housing 109 is in electric dust collector, the bag dust arrester
Correspondence part be respectively equipped with side enabling 109-3, the side enabling 109-3 can be rotated around one side.
So, the anode system 103 of electric dust collector, cathod system 104, and the filter bag of bag dust arrester can lead to
Side enabling 109-3 is crossed to be attached to inside housing 109, compared with the prior art, without installing, dismantling from top, therefore, if
The housing 109 for putting side enabling 109-3 is easy to electric dust collector, the installation of bag dust arrester, dismounting and the maintenance of parts.
Further, above-mentioned side enabling 109-3 is sealed using sealing strip 109-4, it is to avoid flue gas is from side enabling 109-3
Slot leakage.
In another embodiment, above-mentioned electric bag composite dedusting experimental rig also includes the He of fume recovery system 6
Control system 4.The first gray back pump 603, the dust that the fume recovery system 6 includes being sequentially connected by ash pipeline 605 are stored
Tank 602, the second gray back pump 604, dust gravimetric tank 601, first end of the ash pipeline 605 close to the first gray back pump 603
Connect the Pulverized Coal Bin 202, each ash bucket 110 of the housing 109 is connected close to the second end of the dust gravimetric tank 601.This
Outside, gasification board 111 can also be set in the bottom outside of ash bucket 110, the gasification board 111 can introduce hot-air, by cold
Heat alternately makes flying dust avoid caking in ash bucket.The control system 4 includes the powder in the first end of the ash pipeline 605
Dirt return valve 403, located at the second end of the ash pipeline 605 each exit of ash bucket 110 ash discharge valve 404.
The test system also includes the weighing instrument 508 being located under the dust gravimetric tank 601.
Using this structure, any ash discharge valve 404, the second gray back pump 604 are opened, can be by the powder in the ash bucket 110
Dirt is delivered in dust gravimetric tank 601 and reclaimed, and is weighed, matched by 508 pairs of dust reclaimed of weighing instrument.This
Outside, dust can also be transported to stand-by in dust storage tank 602 or discharged by the second gray back pump 604 through ash pipeline 605.Open the
Dust in dust storage tank 602 can be delivered to the first end of ash pipeline 605 by one return pump 603, can make the dust of recovery
In the flue gas for reentering inlet flue duct 302.Open dust return valve 403 and adjust its aperture, can accurately control dust
Into the Dust Capacity of inlet flue duct 302, to ensure the degree of accuracy of composite dedusting.
In another embodiment, above-mentioned control system 4 includes the inlet damper on the inlet flue duct 302
401st, the bypass air door 402 on the bypass flue 303.
So, close inlet damper 401 to completely cut off combustion system 2 and open bypass air door 402 so that whole dedusting examination
Test as cold test；Open inlet damper 401 to introduce combustion system 2 and close bypass air door 402 so that whole dedusting examination
Test as hot test.As can be seen here, by setting two air doors, hot or cold conditions switching can be realized, preferably to grind
Study carefully electric bag composite dedusting mechanism.
In another embodiment, said detecting system 5 also includes the inlet-pressure located at the inlet flue duct 302
Power test component 501, inlet temperature test component 502, located at the outlet pressure test component 507 of the exhaust pass 305.
Using this structure, import can be measured by inlet pressure test component 501, outlet pressure test component 507
Pressure, outlet pressure, and then SR can be determined.Can be to inlet temperature or cold by inlet temperature test component 502
State air themperature is detected.
In another embodiment, as shown in fig. 6, the present invention also provides a kind of electric bag composite dedusting experimental rig
Test method, the experimental rig include located at inlet flue duct 302 the first gaging hole, the electric precipitation located at the experimental rig
The outlet of device or the second gaging hole of the entrance of bag dust arrester, located at the 3rd gaging hole of exhaust pass 305；This method includes dividing
The detecting step of level efficiency of dust collection：
S11：Pass through the first flue gas concentration before first gaging hole 503 detection flue gas ash removal；
S12：Second flue gas concentration of the flue gas after the electric dust collector is detected by second gaging hole 504；
S13：Threeth flue gas concentration of the flue gas after the bag dust arrester is detected by the 3rd gaging hole 506；
S14：The electricity is obtained by first flue gas concentration, second flue gas concentration, the 3rd flue gas concentration
The efficiency of dust collection of the efficiency of dust collection of dust arrester, the bag dust arrester.
Compared with prior art, above-mentioned electric bag composite dedusting experimental rig can simply, easily be tested by each gaging hole
The grade dust-collection efficiency of electric bag dust process, and then understand the performance of current composite dedusting, consequently facilitating being removed according to current classification
Dirt efficiency adjusts electric dust collector, bag dust arrester respectively, to reach the purpose for increasing its efficiency of dust collection.
In another embodiment, above-mentioned electric bag composite dedusting test method also includes air flow method Optimal Experimental
Step：
The import wind speed of the inlet flue duct 302 is detected by first gaging hole 503, is obtained according to the import wind speed
The bottom of bag dust arrester, front, the three-dimensional air intake ratio of side；The three-dimensional air intake ratio is entered with default standard three-dimensional
Wind ratio is compared, if the former with the latter, and the three-dimensional air intake ratio is adjusted into standard three-dimensional air intake ratio, if
The former is equal to the latter, keeps present situation.
The standard three-dimensional air intake ratio here preset at is generally acknowledged in the industry obtained in advance by methods such as calculating, experiments
The bottom of the bag dust arrester that can obtain higher efficiency of dust collection, front, the ratio of the air intake of side.Specifically, the mark
Quasi- three-dimensional air intake ratio can be 5:3:2.The three-dimensional air intake ratio that can keep bag dust arrester by the step remains mark
Quasi- three-dimensional air intake ratio so that the efficiency of dust collection of bag dust arrester remains higher.
Specifically, said flow distribution optimization experimental procedure especially by the filter bag for changing the bag dust arrester side
The three-dimensional air intake ratio is adjusted away from, length.
In another embodiment, above-mentioned experimental rig also includes control system 4, and the control system 4 includes setting
In the inlet damper 401 on the inlet flue duct 302, the bypass air door 402 on the bypass flue 303；The air-flow
Distribution optimization step is switched to before the import wind speed is detected by closing inlet damper 401, opening bypass air door 402
Cold conditions pattern, or, switch to hot pattern by opening inlet damper 401, closing bypass air door 402.
So, by setting two air doors to open or close, hot or cold conditions switching can be realized, preferably to grind
Study carefully electric bag composite dedusting mechanism.
In another embodiment, above-mentioned experimental method also includes electric area, bag area Best Coupling test procedure：
The air cloth ratio than laying dust area, a variety of bags of dust arresters for choosing a variety of electric dust collectors carries out multiple combinations, inspection
The efficiency of dust collection of the electric bag composite dedusting experimental rig under every kind of combination is surveyed, highest efficiency of dust collection therein is chosen and described
Corresponding to highest efficiency of dust collection than laying dust area, the best of breed of air cloth ratio, with the best of breed configure electric dust collector,
Bag dust arrester.
So, the best match type selecting than laying dust area and bag area air cloth ratio in electric area is realized, namely is meeting low
Under conditions of resistance, compact conformation, the Best Coupling ratio in electric area and bag area is finally given.
In addition, pattern step is matched somebody with somebody in the optimal pole that above-mentioned experimental method also includes electric area：Choose a variety of electric dust collectors
The pole of negative electrode carry out multiple combinations with pattern, multiple power sources pattern, detect the dedusting of the electric dust collector under every kind of combination
Match somebody with somebody pattern, power supply pattern most in efficiency, the pole corresponding to selection highest efficiency of dust collection therein and the highest efficiency of dust collection
Excellent combination, the negative electrode, the power supply are configured with the optimum combination.
In such manner, it is possible to strengthen the charged of dust granules, the efficiency of dust collection in electric area is improved, and then strengthens the filterability in bag area
Energy.Specifically, the pole of negative electrode can be barb type, needle-penetrating etc. with pattern；Power supply pattern can be high frequency, power frequency, pulse electricity
Source etc..
In another embodiment, the coagulation of fine particle and experiment in flue gas are also included in above-mentioned experimental method：
The first particle diameter of particulate matter in the flue gas before dedusting is detected by first gaging hole 503；Surveyed by described second
Second particle diameter of particulate matter in flue gas after the detection of hole 504 electric precipitation；Cigarette is obtained according to first particle diameter, second particle diameter
The coagulation and efficiency of fine particle in gas.
By the step can comparison system resistance and filter bag surface dust situation verify the fine grained in flue gas through electricity
Charged and polarization phenomena occur for field, contribute to it in the more loose orderly stratum granulosum of filter material surface formation.
Tested in addition, above-mentioned experimental method also includes media performance：Choose different atures of coal and carry out the different cigarettes of burning generation
Gas, and make the different flue gas respectively by default a variety of different filtrates, and then different filtrates are obtained for different flue gases
Performance variation law.
So, it is easy in actual dust removal process choose different types of filtrate for different atures of coal, namely is easy to straight
Type selecting is matched to filtrate and flue gas condition.For example, this is to different atures of coal, filter can be changed by changing the material of filtrate
Corrosion resistance, inoxidizability, tensile strength of bag etc., the material processing filter bag such as can select PPS, PTFE, P84.
In above-mentioned test method, in addition to filtration velocity regulating step：By adjusting the air quantity of air-introduced machine 304, and/or
The quantity of filter bag on the card 108-1, adjusts the filtration velocity in the bag area.In such manner, it is possible to flexible Control experiment
During filtration velocity, be easy to experiment progress.
In addition, above-mentioned experimental provision also includes fume recovery system 6 and control system 4, the fume recovery system 6 includes
The first gray back pump 603, dust storage tank 602, the second gray back pump 604, the dust gravimetric tank being sequentially connected by ash pipeline 605
601, the ash pipeline 605 connects the Pulverized Coal Bin 202, close to described second close to the first end of the first gray back pump 603
Second end of dust gravimetric tank 601 connects each ash bucket 110 of the housing 109；The control system 4 includes being located at the defeated ash
Dust return valve 403 in the first end of pipe 605, each ash bucket 110 located at the second end of the ash pipeline 605 go out
Ash discharge valve 404 at mouthful；The test system also includes the weighing instrument 508 being located under the dust gravimetric tank 601.
In process of the test, any ash discharge valve 404, the second gray back pump 604 are opened, can be by the dust in the ash bucket 110
It is delivered in dust gravimetric tank 601 and is reclaimed, and is weighed, matched by 508 pairs of dust reclaimed of weighing instrument.In addition,
Dust can also be transported to stand-by in dust storage tank 602 or discharged by the second gray back pump 604 through ash pipeline 605.Open first
Dust in dust storage tank 602 can be delivered to the first end of ash pipeline 605 by gray back pump 603, can make the dust weight of recovery
It is new to enter in the flue gas of inlet flue duct 302.Open dust return valve 403 and adjust its aperture, accurately dust can be controlled to enter
Enter the Dust Capacity of inlet flue duct 302, to ensure the degree of accuracy of electric bag composite dedusting.
A kind of electric bag composite dedusting experimental rig provided by the present invention, test method are described in detail above.
Specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is to use
Understand the method and its core concept of the present invention in help.It should be pointed out that for those skilled in the art,
Under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and modified
Fall into the protection domain of the claims in the present invention.
Claims (12)
1. a kind of electric bag composite dedusting experimental rig, it is characterised in that including device body (1), combustion system (2), cigarette wind system
System (3) and detecting system (5)；
Described device body (1) includes housing (109), and the electric dust collector being detachably arranged in the housing (109), bag are removed
Dirt device；
The combustion system (2) includes Pulverized Coal Bin (202) and the boiler (201) being connected with each other；
The air and gas system (3) includes pressure fan (301), air-introduced machine (304), and the pressure fan (301) passes through inlet flue duct
(302) entrance of the electric dust collector is connected, the inlet flue duct (302) is provided with air bypass flue (303), described to draw
Blower fan (304) connects the outlet of the bag dust arrester by exhaust pass (305)；
The detecting system (5), including the first gaging hole located at the inlet flue duct (302), located at the electric dust collector
Second gaging hole of the entrance of outlet or the bag dust arrester, located at the 3rd gaging hole of the exhaust pass (305)；And, inspection
Survey the detection part of the dust concentration of each gaging hole；
Wherein, the electric dust collector includes anode system (103), and the housing (109) is provided with the first support beam (109-1),
In first support beam (109-1) and the anode system (103), one is set provided with the first stopper slot (109-2), another one
Have the first locating part (103-1) that can be installed on first stopper slot (109-2), first support beam (109-1) with
The anode system (103) is detachably connected by first stopper slot (109-2), first locating part (103-1).
2. electric bag composite dedusting experimental rig according to claim 1, it is characterised in that also including fume recovery system
(6) and control system (4), the fume recovery system (6) includes the first gray back pump being sequentially connected by ash pipeline (605)
(603), dust storage tank (602), the second gray back pump (604), dust gravimetric tank (601), the ash pipeline (605) is close to described
The first end of first gray back pump (603) connects the Pulverized Coal Bin (202), second close to the second dust gravimetric tank (601)
Each ash bucket (110) of the end connection housing (109)；
The control system (4) include located at the ash pipeline (605) first end on dust return valve (403), be located at
The ash discharge valve (404) in each ash bucket (110) exit at the second end of the ash pipeline (605)；
The test system also includes the weighing instrument (508) being located under the dust gravimetric tank (601).
3. electric bag composite dedusting experimental rig according to claim 2, it is characterised in that the control system (4) is also wrapped
Include the inlet damper (401) on the inlet flue duct (302), the bypass air door on the bypass flue (303)
(402)。
4. electric bag composite dedusting experimental rig according to claim 1, it is characterised in that the detecting system (5) is also wrapped
Inlet pressure test component (501), the inlet temperature test component (502) located at the inlet flue duct (302) are included, located at described
The outlet pressure test component (507) of exhaust pass (305).
5. a kind of test method of electric bag composite dedusting experimental rig, the experimental rig is included located at inlet flue duct (302)
First gaging hole, located at the experimental rig electric dust collector outlet or bag dust arrester entrance the second gaging hole, be located at
3rd gaging hole of exhaust pass (305)；Characterized in that, the electric dust collector, the bag dust arrester are detachably arranged at
In the experimental rig, the test method includes the detecting step of grade dust-collection efficiency：
The first flue gas concentration before flue gas ash removal is detected by first gaging hole (503)；
Second flue gas concentration of the flue gas after the electric dust collector is detected by second gaging hole (504)；
Threeth flue gas concentration of the flue gas after the bag dust arrester is detected by the 3rd gaging hole (506)；
The electric dust collector is obtained by first flue gas concentration, second flue gas concentration, the 3rd flue gas concentration
Efficiency of dust collection, the efficiency of dust collection of the bag dust arrester；
Wherein, the electric dust collector includes anode system (103), and the housing (109) is provided with the first support beam (109-1),
In first support beam (109-1) and the anode system (103), one is set provided with the first stopper slot (109-2), another one
Have the first locating part (103-1) that can be installed on first stopper slot (109-2), first support beam (109-1) with
The anode system (103) is detachably connected by first stopper slot (109-2), first locating part (103-1).
6. the test method of electric bag composite dedusting experimental rig according to claim 5, it is characterised in that also including air-flow
Distribution optimization experimental procedure：
The import wind speed of the inlet flue duct (302) is detected, according to the bottom of import wind speed acquisition bag dust arrester, just
Face, the three-dimensional air intake ratio of side；
The three-dimensional air intake ratio and default standard three-dimensional air intake ratio are compared, if the former with the latter, by institute
State three-dimensional air intake ratio and be adjusted to standard three-dimensional air intake ratio, if the former is equal to the latter, keep present situation.
7. the test method of electric bag composite dedusting experimental rig according to claim 6, it is characterised in that the experiment dress
Putting also includes control system (4), and the control system (4) includes the inlet damper on the inlet flue duct (302)
(401), the bypass air door (402) on the bypass flue (303) of the experimental rig；
The air flow method Optimization Steps are bypassed before the import wind speed is detected by closing inlet damper (401), opening
Air door (402) switches to cold conditions pattern, or, switch to heat by opening inlet damper (401), closing bypass air door (402)
Morphotype formula.
8. the test method of the electric bag composite dedusting experimental rig according to claim any one of 5-7, it is characterised in that also
Including electric area, bag area Best Coupling test procedure：
The air cloth ratio than laying dust area, a variety of bags of dust arresters for choosing a variety of electric dust collectors carries out multiple combinations, and detection is every
The efficiency of dust collection of the electric bag composite dedusting experimental rig under combination is planted, highest efficiency of dust collection therein and the highest is chosen
Corresponding to efficiency of dust collection than laying dust area, the best of breed of air cloth ratio, configure electric dust collector, bag with the best of breed and remove
Dirt device.
9. the test method of the electric bag composite dedusting experimental rig according to claim any one of 5-7, it is characterised in that also
Match somebody with somebody pattern step in optimal pole including electric area：
The pole for choosing the negative electrode of a variety of electric dust collectors carries out multiple combinations with pattern, multiple power sources pattern, detects every kind of
The efficiency of dust collection of the electric dust collector under combination, chooses highest efficiency of dust collection therein and highest efficiency of dust collection institute is right
Pattern, the optimum combination of power supply pattern are matched somebody with somebody in the pole answered, and the negative electrode, the power supply are configured with the optimum combination.
10. the test method of the electric bag composite dedusting experimental rig according to claim any one of 5-7, it is characterised in that
Also include the coagulation of fine particle and experiment in flue gas：
The first particle diameter of particulate matter in the flue gas before dedusting is detected by first gaging hole (503)；
The second particle diameter of particulate matter in the flue gas after electric precipitation is detected by second gaging hole (504)；
The coagulation and efficiency of fine particle in flue gas are obtained according to first particle diameter, second particle diameter.
11. the test method of the electric bag composite dedusting experimental rig according to claim any one of 5-7, it is characterised in that
Also include media performance to test：
Choose different atures of coal and carry out burning and produce different flue gases, and make the different flue gas respectively by it is default it is a variety of not
Same filtrate, and then obtain the performance variation law that different filtrates are directed to different flue gases.
12. the test method of the electric bag composite dedusting experimental rig according to claim any one of 5-7, it is characterised in that
The experimental provision also includes fume recovery system (6), and the fume recovery system (6) is included by ash pipeline (605) successively
The first gray back pump (603), dust storage tank (602), the second gray back pump (604), the dust gravimetric tank (601) of connection, it is described defeated
Ash pipe (605) connects the Pulverized Coal Bin (202), close to second dust close to the first end of the first gray back pump (603)
Second end of gravimetric tank (601) connects each ash bucket (110) of the housing (109)；The control system (4) also includes being located at institute
State dust return valve (403) in the first end of ash pipeline (605), located at each of the second end of the ash pipeline (605)
The ash discharge valve (404) in ash bucket (110) exit；The test system also includes being located at the dust gravimetric tank (601)
Under weighing instrument (508)；
The test method also includes dust recovery, rate-determining steps：
Any ash discharge valve (404), the second gray back pump (604) are opened, the dust in the ash bucket (110) is delivered into dust weighs
Reclaimed in tank (601), and the dust of recovery is weighed by weighing instrument (508), matched；
The first gray back pump (603) is opened, the dust in dust storage tank (602) is delivered to the first end of ash pipeline (605), and
Pass through the powder for changing different atures of coal, the aperture of the regulation dust return valve (403) controls dust to enter inlet flue duct (302)
Dust quantity.
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| CN201610638861.1A CN106139801B (en) | 2016-08-05 | 2016-08-05 | A kind of electric bag composite dedusting experimental rig, test method |
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| CN107158815B (en) * | 2017-05-26 | 2019-05-03 | 江苏绿地环保滤材有限公司 | A kind of high pressure resistant antistatic dedusting filter of environmental protection |
| CN111389118B (en) * | 2020-05-12 | 2022-05-27 | 福建龙净环保股份有限公司 | Filter bag device and dust remover |
| CN113075913B (en) * | 2021-03-29 | 2022-06-07 | 西安热工研究院有限公司 | Dynamic energy-saving control method for ash conveying system of coal-fired power plant based on actual coal quality parameters |
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| SE425945B (en) * | 1981-04-03 | 1982-11-29 | Flaekt Ab | DEVICE FOR A DUST FILTER |
| CN103111149B (en) * | 2013-01-25 | 2015-04-22 | 广东电网公司电力科学研究院 | Electric bag composite dust removal grading efficiency test device and method |
| CN203075804U (en) * | 2013-01-25 | 2013-07-24 | 广东电网公司电力科学研究院 | Electric-bag composite dedusting grading efficiency testing device |
| CN204543908U (en) * | 2015-04-24 | 2015-08-12 | 谢锡东 | A kind of electric-bag complex dust collector with cooling processing |
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