CN102755806A - Parasitic combined dust collector and operation method thereof - Google Patents
Parasitic combined dust collector and operation method thereof Download PDFInfo
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- CN102755806A CN102755806A CN2012102460782A CN201210246078A CN102755806A CN 102755806 A CN102755806 A CN 102755806A CN 2012102460782 A CN2012102460782 A CN 2012102460782A CN 201210246078 A CN201210246078 A CN 201210246078A CN 102755806 A CN102755806 A CN 102755806A
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Abstract
The invention discloses a parasitic combined dust collector and an operation method thereof. The parasitic combined dust collector comprises a cottrell with one or more than one electric field chamber, and a main air blower is arranged on the main exhaust duct of the cottrell; the parasitic combined dust collector further comprises a bag-type dust collector body parallel to the cottrell and a pipe network used for connecting the electric field chambers and the bag-type dust collector body; the pipe network comprises one or more than one branch pipes connected to the tops of the electric field chambers and main air inducing pipes respectively communicated with the branch pipes and the inlet of the bag-type dust collector body; and the outlet of the bag-type dust collector body is connected with the a bag-type air blower, the outlet of the bag-type air blower is connected with an auxiliary exhaust duct, the auxiliary exhaust duct is connected with the main exhaust duct, and the junction of the auxiliary exhaust duct and the main exhaust duct is positioned in front of the main air blower. According to the invention, a small amount of gas containing superfine dust and positioned at the upper parts of the electric field chambers is only required to be extracted, the size of the required bag-type dust collector body is small; moreover, the invention has the advantages that the resistance of the Cottrell is not increased, the construction time is short, reconstruction is not limited by sites, and the influence to production is small.
Description
Technical field
The present invention relates to the industrial dedusting technical field, be specifically related to a kind of cleaner and operation method thereof of parasitic formula combination, the cleaner of said parasitic formula combination comprises electric cleaner and sack cleaner, and parallelly connected sack cleaner forms on the basis of electric cleaner.
Background technology
In the dedusting field, be divided into the diameter of particle: 0 ~ 5 micron, 5 ~ 10 microns, 10 ~ 20 microns, 20 ~ 50 microns, greater than several levels such as 50 microns, wherein 0 ~ 5 micron particle is defined as ultrafine dust.Ultrafine dust is done Brownian movement in air, extremely strong diffusivity is arranged, in still air hardly sedimentation or very slowly, sedimentation circuitously.
Electric cleaner and sack cleaner are two kinds of common equipments that are used for reclaiming the industrial waste gas dust, are widely used in fields such as electric power, smelting, cement.The operation principle of electric cleaner is: in a high-voltage electrostatic field heterogeneous, gas is by ionization, and dusty gas makes the charged anion that forms of dust through electric field, and anion is under the effect of electric field force, and anode is moved.Anion is divided into and quickens and two stages at the uniform velocity in the process of anode motion, and ion constantly is accelerated in the corona zone; Because the anion quality of high-speed cruising is minimum, the resistance that anion receives under damping state continues to increase, during resistance that the power on acting on anion equals to receive; Speed is constant, and after the anion motion arrived anode, electronics was neutralized the formation electric current; Dust is caught by positive plate (being dust collecting electrode); Of a specified duration to its rapping, the dust of catching falls ash bucket along pole plate, reaches the purpose of gathering dust.
The operation principle of sack cleaner is: the cloth bag that in open container, is furnished with skeleton; Blower fan is extracted into dusty gas the inboard of cloth bag from the outside of cloth bag; Dust is filtered in the cloth bag outside, when treating that dust on the cloth bag runs up to certain thickness, it is carried out reverse gas purging; The dust that is filtered falls ash bucket, reaches the purpose of gathering dust.
These two kinds of cleaners respectively have pluses and minuses, and electric cleaner has that the equipment running resistance is little, power consumption is little, the temperature of suitable treatment waste gas is high, flow is big, the advantage that efficiency of dust collection is high, maintenance cost is low; Its shortcoming is the poor effect that investment is big, reclaim ultrafine dust.
Sack cleaner has can handle thickness dust, investment is little, efficiency of dust collection is high advantage, and its shortcoming is that the equipment running resistance is big, handles that EGT is lower, maintenance cost is high.
Large-scale electric cleaner major part in industry extensive uses such as the electric power of China, smelting, cement, chemical industry is provided with three electric fields; Dusty gas is successively through three grades of purifications of first, second, third electric field; Fully dedusting, the design discharge standard of the electric cleaner of three grades of electric fields is 50mg/Nm
3It is better that existing electric cleaner ubiquity initial performance, after date when moving a section, the problem that efficiency of dust collection begins to descend.Its analysis of causes is following: electric cleaner is in operation, and dust-laden exhaust gas constantly gets into, through the horn mouth diffusion, and sudden change of flow speed, meal dirt is called first separation by the gravitational field separate and subside; Dust after the separation is caught gathering by first electric field, certain thickness to be run up to, and through rapping, the separated sedimentation of dust that part is assembled is called secondary separation; Dust after the secondary separation returns to electric field again, and gets into second, third electric field separate and subside once more successively, is called three times and separates with four times.Dust-laden exhaust gas endlessly, after multiple separation, ultrafine dust is still stayed in the electric field, is caught by electric field repeatedly, and repeatedly returns to electric field, and concentration improves constantly.The characteristics of these ultrafine dusts: surface area greatly, very easily charged, diffusivity is strong, in electric field band same sex electric charge, stability high, not free settling, be difficult for leaving electric field.Electric field force carries out work done repeatedly to them, has consumed normal power.They move to second electric field from first electric field under wind, move to the 3rd electric field from second electric field again.Ultrafine dust is assembled to electric field top under the effect in temperature field simultaneously, if things go on like this, until saturated, efficiency of dust collection is descended, and discharging exceeds standard.The inventor finds in practice in addition: when gas humidity was big, dust-charge reduced, and ultrafine dust is condensed into flocculence, and the flocculence dust hangs in the electric field.Its characteristics are: top is obviously many than the bottom, and the 3rd electric field is more than second electric field, and second electric field is more than first electric field.When gas was dry, byssaceous dust can disappear, and these ultrafine dusts no matter whether condense, all are discharged in the atmosphere contaminated environment at last.
The shortcoming of the electric cleaner of prior art is that ultrafine dust is caught by electric field again easily after rapping, the phenomenon that oriented upper space gathers in an electric field.Ultrafine dust is through behind the multistage electric field, the trend that concentration improves gradually, and the ultrafine dust of long-term accumulation can not be caught by electrode effectively, finally is discharged into atmosphere, contaminated environment.Existing large-scale electric cleaner major part is 50mg/Nm according to dust concentration
3Discharge standard design, the socio-economic development along with China improves constantly environment requirement, discharge standard is from 50mg/Nm
3Bring up to 30mg/Nm
3Therefore need transform the large-scale electric dust-removing equipment that has built up; The common height that increases electric field quantity or increase electric field that adopts improves specific collection area; Such reforming mode investment is huge; High to site requirements, the later maintenance expense is big, and can not fundamentally solve the problem of removing ultrafine dust.
Summary of the invention
To the above-mentioned defective that prior art exists, the technical problem that the present invention will solve is that a kind of cleaner that can effectively remove the ultrafine dust in the dusty gas is provided.
For addressing the above problem, the present invention adopts following technical scheme: a kind of cleaner of parasitic formula combination, comprise electric cleaner with one or more electric fields chamber, and the main exhaust duct of said electric cleaner is provided with main air blower; The cleaner of said parasitic formula combination comprises also with the sack cleaner of said electric cleaner parallel connection and is used to be connected the electric field chamber of said electric cleaner and the pipe network of sack cleaner that said pipe network comprises one or more arm at the top that is connected said electric field chamber and the main induced duct that is communicated with the import of said arm and said sack cleaner respectively; The outlet of said sack cleaner is connected with the cloth bag blower fan, and the outlet of said cloth bag blower fan is connected with secondary exhaust duct, and said secondary exhaust duct is connected with said main exhaust duct, and the junction of said secondary exhaust duct and said main exhaust duct is positioned at before the said main air blower.
As preferably, said sack cleaner also is connected with the bypass with atmosphere, and said bypass is provided with the by-passing valve that is used to regulate the gas temperature in the said sack cleaner.
As preferably, said arm is provided with first control valve, said main induced duct with pipeline that said sack cleaner is connected on be provided with second control valve.
As preferably, the cleaner of said parasitic formula combination also comprises controller, in the said sack cleaner or main induced duct be provided with temperature sensor, said controller opens or closes according to the said by-passing valve of signal controlling of said temperature sensor.
As preferably, the top of said electric field chamber is provided with the dust concentration sensor, and said dust concentration sensor is connected with said controller, and said controller is according to the switching of said second control valve of the signal controlling of said dust concentration sensor and cloth bag blower fan.
As preferably; Said sack cleaner comprises at least one or a plurality of dirt pocket; The import of each said dirt pocket is provided with the off-line valve; Be equipped with pressure sensor in each said dirt pocket, said controller is connected with pressure sensor and according to the switching of the said off-line valve of the signal controlling of said pressure sensor and the wind direction of said cloth bag blower fan.
As preferably, said electric cleaner comprises three electric field chambers.
Another technical problem that the present invention will solve is that a kind of method that can effectively remove the ultrafine dust in the dusty gas is provided.
The present invention also provides a kind of operation method of cleaner of parasitic formula combination, comprises and carries out following steps successively:
(1) dusty gas gets into electric cleaner, the electric field indoor electric from, to the dust collecting electrode motion and accumulate on the dust collecting electrode, through rapping, most of dust gets in the dust collection device;
(2) during rapping, it is indoor that a part of ultrafine dust returns electric field, and accumulate in the top of electric field chamber with the ultrafine dust of new generation;
(3) extract the ultrafine dust assembled at the top of the electric field chamber of said electric cleaner to sack cleaner;
(4) be discharged to atmosphere through said sack cleaner purified gas through the main exhaust duct of said electric cleaner;
(5) ultrafine dust of collecting through said sack cleaner is discharged in the cloth bag blower fan blowback of said sack cleaner.
As preferably, said step (3) specifically comprises the steps:
(31) controller receives the signal of the dust concentration sensor of the electric field chamber that is positioned at said electric cleaner, according to the dust concentration of the said electric field of the calculated signals of said dust concentration sensor chamber;
(32) when the dust concentration of said electric field chamber meets or exceeds predetermined value; Said controller opens is positioned at second control valve and the cloth bag blower fan on the main induced duct of said sack cleaner, extracts the ultrafine dust assembled at the top of the electric field chamber of said electric cleaner to sack cleaner.
As preferably, said dust collection method further comprises the steps:
(6) controller receive the temperature signal be positioned at the temperature sensor on said sack cleaner or the main induced duct with the temperature of judging said sack cleaner whether above predetermined value;
(7) when the temperature in the said sack cleaner meets or exceeds predetermined value, the by-passing valve in said controller opens and the bypass that said sack cleaner communicates makes itself and atmosphere to reduce the temperature in the said sack cleaner.
The cleaner and the operation method thereof of parasitic formula combination of the present invention have following beneficial effect:
1) because only need to extract the gas that top, electric field chamber comprises ultrafine dust out, the gas flow of extraction is very little, and the volume of needed sack cleaner is little, investment is little.
2) because sack cleaner is parallelly connected with electric cleaner, do not increase the resistance of the pipeline of electric cleaner.
3) same because sack cleaner is parallelly connected with electric cleaner; Can on the basis of existing electric cleaner, transform and form; And when transforming, need not change the structure of original electric cleaner, have the advantage that the engineering time is short, cost is low, transformation does not receive place restriction, little impact on production.
4) can reclaim ultrafine dust simultaneously at a plurality of electric fields.
5) because sack cleaner only is responsible for filtering ultrafine dust, its replacement cycle can be prolonged greatly.
6) can select to let sack cleaner continuously or intermitten operation,, start sack cleaner when needing work, otherwise can shut down, further improve the life-span of sack cleaner when the top of electric field chamber is full of ultrafine dust.
Description of drawings
Fig. 1 is the cleaner structure composition frame chart of the parasitic formula combination of embodiments of the invention;
Fig. 2 is the object construction figure of the cleaner of parasitic formula combination shown in Figure 1.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing and specific embodiment, but conduct is not to qualification of the present invention.
Like Fig. 1, shown in Figure 2, the cleaner of the parasitic formula of embodiments of the invention combination comprises that 1, three the electric field chamber of electric cleaner with three electric field chambers is followed successively by the first electric field chamber 11, the second electric field chamber 12, the 3rd electric field chamber 13; The main exhaust duct 7 of electric cleaner 1 is provided with main air blower (main air blower is positioned at the end of main exhaust duct 7, and is not shown among Fig. 2).The cleaner of parasitic formula combination of the present invention also comprises with the sack cleaner 2 of electric cleaner 1 parallel connection and is used to be connected the electric field chamber of electric cleaner 1 and the pipe network of sack cleaner 2; Said pipe network comprises one or more arm 4 at the top that is connected the first electric field chamber 11, the second electric field chamber 12, the 3rd electric field chamber 13 and the main induced duct 5 that is communicated with the import of arm 4 and sack cleaner 2 respectively; In the present embodiment; The top of each electric field chamber is provided with a plurality of arms 4; And be connected with main induced duct 5 through a transverse tube 42, the top of each electric field chamber is provided with a plurality of arms 4, is convenient to extract equably the ultrafine dust on each top, electric field chamber.Certainly an arm 4 can also be set on the top of an electric field chamber, the arm 4 of a plurality of electric fields chamber is communicated with the import of sack cleaner 2 through main induced duct 5.The outlet of sack cleaner 2 is connected with cloth bag blower fan 6, and the outlet of cloth bag blower fan 6 is connected with secondary exhaust duct 71, and secondary exhaust duct 71 is connected with main exhaust duct 7, and the junction of secondary exhaust duct 71 and main exhaust duct 7 is positioned at before the main air blower.As shown in Figure 2, for regulate secondary exhaust duct 71 and and main exhaust duct 7 between pressure, secondary exhaust duct 71 is provided with the 3rd control valve 701 with before main exhaust duct 7 is connected.
Under the effect of main air blower; Being negative pressure in electric cleaner 1 and the connected pipeline, under the effect of cloth bag blower fan 2, also is negative pressure in sack cleaner 2 and the connected pipeline; When the negative pressure of sack cleaner 2 during greater than the negative pressure in the electric cleaner 1; The gas that contains ultrafine dust at the top of the first electric field chamber 11 of electric cleaner 1, the second electric field chamber 12, the 3rd electric field chamber 13 is drawn out of, and after sack cleaner 2 purified, its dust concentration had been reduced to 30mg/Nm
3And below, reached discharge standard, get into the main exhaust duct 7 that is connected with electric cleaner 1 through secondary exhaust duct 71, extracted out by main air blower, perhaps enter atmosphere or get into next step operation.
The cleaner of parasitic formula combination of the present invention is divided the work to electric cleaner and sack cleaner, makes sack cleaner 2 be responsible for reclaiming ultrafine dust, and electric cleaner plays the effect of main deduster, is responsible for reclaiming the most of dust except that ultrafine dust.Technical scheme of the present invention, the characteristics of utilizing ultrafine dust to assemble to the top of electric field chamber only need to extract that part of gas that top, electric field chamber comprises ultrafine dust out, and the gas flow of extraction is less, and the volume of needed sack cleaner is little, investment is little.Because sack cleaner is parallelly connected with electric cleaner, be equivalent to sack cleaner and colonize in mainly in the main dust pelletizing system of forming by electric cleaner, do not change certain resistance that does not more increase the pipeline of electric cleaner.Compare with the scheme of series connection sack cleaner, greatly reduce power consumption.Same parallelly connected with electric cleaner owing to sack cleaner, can on the basis of existing electric cleaner, transform, can reduce cost; And when on the basis of existing electric cleaner, transforming, need not change the structure of original electric cleaner, only need near it, increase by a cover sack cleaner; And corresponding pipeline is set gets final product; Just when pipeline connects construction, just need to shut down, have the engineering time short, transform and not limited by the place, the advantage of little impact on production.In addition, as depicted in figs. 1 and 2, adopt a main induced duct and a plurality of arm connected mode, can reclaim ultrafine dust simultaneously at a plurality of electric fields.Because sack cleaner only is responsible for filtering ultrafine dust; Its volume of bearing the dusty gas that filters only accounts for wherein sub-fraction; Compare in the technical scheme that the rear end of electric cleaner increases sack cleaner with available technology adopting; Can prolong the replacement cycle of sack cleaner greatly, and reduce the running resistance of electric cleaner, reduce overall power.Among the present invention, sack cleaner can not work independently, and it grafts in mainly in the system that is made up of electric cleaner, is similar to colonize on the electric cleaner, and on the electric cleaner basis, takes out the ultrafine dust in the dusty gas effectively.
In addition, because sack cleaner only be responsible for to filter ultrafine dust, and is connected with electric cleaner through pipe network, so the setting of sack cleaner do not receive the restriction in place, and the place that has certain distance with electric cleaner can be set.
As the preferred method of operation, can select to let sack cleaner continuously or intermitten operation, have only when the top of electric field chamber to be full of ultrafine dust, start sack cleaner when needing work, otherwise can shut down, further improve the life-span of sack cleaner.Those skilled in the art can select suitable start-up period according to the character and the flow of the flue dust of required purification, whenever starts sack cleaner at regular intervals No. one time
As depicted in figs. 1 and 2, as preferably, in this enforcement, sack cleaner also is connected with the bypass with atmosphere, and bypass is provided with the by-passing valve 51 that is used to regulate the gas temperature in the sack cleaner.When the temperature in the sack cleaner 2 surpasses the safe operation temperature of its setting, open by-passing valve 51, sack cleaner 2 and atmosphere, because sack cleaner is a negative pressure, atmosphere gets into sack cleaner 2, reduces its temperature.In the present embodiment, the bypass at by-passing valve 51 places is connected with main induced duct 5, and under the state that by-passing valve 51 is opened, atmosphere gets into sack cleaner 2 through main induced duct 5.
As preferably, the cleaner of the parasitic formula combination of present embodiment also comprises controller, and main induced duct 5 is provided with temperature sensor 22, and temperature sensor 22 also can be arranged in the sack cleaner 2.Controller opens or closes according to the signal controlling by-passing valve 51 of temperature sensor 22.Controller can adopt common industrial PLC.Like this, PLC can control opening or closing of by-passing valve 51 according to the temperature signal that temperature sensor 22 is gathered, and realizes temperature control automation.
As preferably; As shown in Figure 2, arm 4 is provided with first control valve 41, and main induced duct 5 is provided with second control valve 21; First control valve 41 and second control valve 21 are control valve commonly used, can be used to regulate the pressure and/or the flow of the arm 4 and the gas of main induced duct interior 5.
In order to realize starting sack cleaner 2 automatically; As preferably; The top of the first electric field chamber 11, the second electric field chamber 12, the 3rd electric field chamber 13 is respectively equipped with dust concentration sensor (not shown); The dust concentration sensor is connected with controller, and controller is according to signal controlling second control valve 21 of dust concentration sensor and the switching of cloth bag blower fan 6.As long as when having a detected dust concentration of dust concentration sensor to meet or exceed predetermined value, just open second control valve 21, and start the cloth bag blower fan, make sack cleaner 2 work.2 of sack cleaners were worked in the time of necessity, cut down the consumption of energy.In the first electric field chamber 11, when the dust concentration at the second electric field chamber 12,13 tops, the 3rd electric field chamber does not all reach predetermined value, second control valve 21 cuts out, cloth bag blower fan 6 is shut down, but energy savings also can prolong life-span of sack cleaner 2.
In addition; As preferred version; In the present embodiment; The import of sack cleaner 2 is provided with off-line valve (not shown), is provided with pressure sensor in the sack cleaner 2, and controller is connected with pressure sensor and according to the switching of the signal controlling off-line valve of pressure sensor and the wind direction of cloth bag blower fan 6.When the pressure in the sack cleaner 2 surpasses predetermined value, the off-line valve closing, sack cleaner 2 separates with main dust pelletizing system, and cloth bag blower fan 6 is oppositely dried, to remove attached to the ultrafine dust on the cloth bag.
It is to be noted; In the present embodiment; With the electric cleaner with three electric field chambers is that example describes, and in fact the electric field chamber of electric cleaner can be one or more, selects according to character, flow and the investment budgey of the dusty gas of required purification.
For realizing that sack cleaner can reclaim ultrafine dust automatically, in sack cleaner, be provided with one or more dirt pockets, be provided with pressure sensor and off-line valve in each dirt pocket.When the rising of dirt pocket internal pressure, when meeting or exceeding predetermined value, controller control off-line valve is closed automatically, and dirt pocket and electric cleaner separate, and the off-line blowback begins, and after deashing finished, the off-line valve was being opened out.Be positioned on the ash bucket of dirt pocket below, be provided with level-sensing device, when ultrafine dust was stacked into scheduled volume on the ash bucket, level-sensing device provided signal, and controller control ash-transmission system starts, and ultrafine dust is discharged into bulk cement truck.
Below specify the operation method of the cleaner of parasitic formula combination of the present invention, comprise and carry out following steps successively:
(1) dusty gas gets into electric cleaner, the electric field indoor electric from, to the dust collecting electrode motion and accumulate on the dust collecting electrode, through rapping, most of dust gets in the dust collection device;
(2) during rapping, it is indoor that a part of ultrafine dust returns electric field, and accumulate in the top of electric field chamber with the ultrafine dust of new generation;
(3) extract the ultrafine dust assembled at the top of the electric field chamber of electric cleaner to sack cleaner;
(4) be discharged to atmosphere through the sack cleaner purified gas through the main exhaust duct of said electric cleaner;
(5) ultrafine dust of collecting through sack cleaner is discharged in the cloth bag blower fan blowback of sack cleaner.
In order to start sack cleaner automatically, as preferably, step (3) specifically comprises the steps:
(31) controller receives the signal of the dust concentration sensor of the electric field chamber be positioned at electric cleaner, according to the dust concentration of the calculated signals electric field chamber of dust concentration sensor;
(32) when the dust concentration of electric field chamber meets or exceeds predetermined value, controller opens is positioned at second control valve and the cloth bag blower fan on the induced duct of sack cleaner, extracts the ultrafine dust assembled at the top of the electric field chamber of electric cleaner to sack cleaner.Can select to let the sack cleaner intermitten operation,, start sack cleaner when needing work, otherwise can shut down, further improve the life-span of sack cleaner when the top of electric field chamber is full of ultrafine dust.
In order to adjust the temperature in the sack cleaner automatically, prevent that it is overheated, dust collection method further comprises the steps:
(6) controller receives the temperature signal be positioned at the temperature sensor on sack cleaner or the main induced duct and whether reaches predetermined value with the temperature of judging sack cleaner;
When (7) temperature sensor detected the numerical value degree and meets or exceeds predetermined value, controller opens was positioned at the by-passing valve in the bypass of sack cleaner, makes itself and atmosphere to reduce the temperature in the sack cleaner.Because be negative pressure in the pipeline that sack cleaner reaches with it communicates, the pressure of atmosphere is higher, sends into sack cleaner to air and mixes with dusty gas, reduces its temperature, guarantee the operate as normal of sack cleaner.
The cleaner and the operation method thereof of parasitic formula combination of the present invention; Utilize and constantly produce ultrafine dust in the electric field; And ultrafine dust concentrates on the rule of electric field headroom; Be extracted into the external of electric cleaner to the gas that contains ultrafine dust, after the cloth bag system recoveries, send the gas that purifies in the original system back to again.Fully utilize the advantage of two kinds of cleaners, and avoided its shortcoming, thoroughly solved the airborne dust once more of electric cleaner.The flow of newly-increased sack cleaner is 5.4% of a main system flow in the cleaner of parasitic formula combination of the present invention.A little sack cleaner can solve the ultrafine dust problem of a large-scale electric cleaner, and can transform on the basis of existing technology, has the low advantage of cost.
Certainly, the above is a preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.
Claims (10)
1. the cleaner of a parasitic formula combination comprises the electric cleaner with one or more electric fields chamber, and the main exhaust duct of said electric cleaner is provided with main air blower; It is characterized in that,
Comprise also with the sack cleaner of said electric cleaner parallel connection and be used to be connected the electric field chamber of said electric cleaner and the pipe network of sack cleaner that said pipe network comprises one or more arm at the top that is connected said electric field chamber and the main induced duct that is communicated with the import of said arm and said sack cleaner respectively;
The outlet of said sack cleaner is connected with the cloth bag blower fan, and the outlet of said cloth bag blower fan is connected with secondary exhaust duct, and said secondary exhaust duct is connected with said main exhaust duct, and the junction of said secondary exhaust duct and said main exhaust duct is positioned at before the said main air blower.
2. the cleaner of parasitic formula combination as claimed in claim 1 is characterized in that said sack cleaner also is connected with the bypass with atmosphere, and said bypass is provided with the by-passing valve that is used to regulate the gas temperature in the said sack cleaner.
3. the cleaner of parasitic formula combination as claimed in claim 2 is characterized in that said arm is provided with first control valve, said main induced duct with pipeline that said sack cleaner is connected on be provided with second control valve.
4. the cleaner of parasitic formula combination as claimed in claim 3; It is characterized in that; Also comprise controller, in the said sack cleaner or main induced duct be provided with temperature sensor, said controller opens or closes according to the said by-passing valve of signal controlling of said temperature sensor.
5. the cleaner of parasitic formula combination as claimed in claim 4; It is characterized in that; The top of said electric field chamber is provided with the dust concentration sensor; Said dust concentration sensor is connected with said controller, and said controller is according to the switching of said second control valve of the signal controlling of said dust concentration sensor and cloth bag blower fan.
6. like the cleaner of claim 4 or 5 described parasitic formulas combinations; It is characterized in that; Said sack cleaner comprises at least one or a plurality of dirt pocket; The import of each said dirt pocket is provided with the off-line valve, is equipped with pressure sensor in each said dirt pocket, and said controller is connected with pressure sensor and according to the switching of the said off-line valve of the signal controlling of said pressure sensor and the wind direction of said cloth bag blower fan.
7. the cleaner of parasitic formula combination as claimed in claim 1 is characterized in that said electric cleaner comprises three electric field chambers.
8. like the operation method of the cleaner of each described parasitic formula combination of claim 1-7, it is characterized in that, comprise and carry out following steps successively:
(1) dusty gas gets into electric cleaner, the electric field indoor electric from, to the dust collecting electrode motion and accumulate on the dust collecting electrode, through rapping, most of dust gets in the dust collection device;
(2) during rapping, it is indoor that a part of ultrafine dust returns electric field, and accumulate in the top of electric field chamber with the ultrafine dust of new generation;
(3) extract the ultrafine dust assembled at the top of the electric field chamber of said electric cleaner to sack cleaner;
(4) be discharged to atmosphere through said sack cleaner purified gas through the main exhaust duct of said electric cleaner;
(5) ultrafine dust of collecting through said sack cleaner is discharged in the cloth bag blower fan blowback of said sack cleaner.
9. operation method as claimed in claim 8 is characterized in that, said step (3) specifically comprises the steps:
(31) controller receives the signal of the dust concentration sensor of the electric field chamber that is positioned at said electric cleaner, according to the dust concentration of the said electric field of the calculated signals of said dust concentration sensor chamber;
(32) when the dust concentration of said electric field chamber meets or exceeds predetermined value; Said controller opens is positioned at second control valve and the cloth bag blower fan on the main induced duct of said sack cleaner, extracts the ultrafine dust assembled at the top of the electric field chamber of said electric cleaner to sack cleaner.
10. like claim 8 or 9 described operation methods, it is characterized in that, further comprise the steps:
(6) controller receive the temperature signal be positioned at the temperature sensor on said sack cleaner or the main induced duct with the temperature of judging said sack cleaner whether above predetermined value;
(7) when the temperature in the said sack cleaner surpasses predetermined value, the by-passing valve in said controller opens and the bypass that said sack cleaner communicates makes itself and atmosphere to reduce the temperature in the said sack cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246078.2A CN102755806B (en) | 2012-07-17 | 2012-07-17 | A kind of cleaner of parasitic type combination and operation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111331252A (en) * | 2020-04-17 | 2020-06-26 | 大族激光科技产业集团股份有限公司 | Air draft dust removal method and system of large-breadth laser cutting machine tool |
| CN113941215A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Intermittent activated carbon powder purification system and purification method thereof |
| CN115228186A (en) * | 2022-06-18 | 2022-10-25 | 首钢智新迁安电磁材料有限公司 | Filtering device and filtering control method, device and equipment thereof |
| CN118417057A (en) * | 2024-07-02 | 2024-08-02 | 山西省安装集团股份有限公司 | Dust removing device for heat source plant |
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| CN2813106Y (en) * | 2005-08-12 | 2006-09-06 | 施加美 | Electric-bag combined dust collector |
| CN201168531Y (en) * | 2008-03-17 | 2008-12-24 | 江苏科宝机械制造有限公司 | Electric bag combined dust collector |
| CN101732938A (en) * | 2008-11-26 | 2010-06-16 | 威海市正大环保设备有限公司 | Method and device for electric catching and dry-process purification of carbon baking flue gas |
| CN202666642U (en) * | 2012-07-17 | 2013-01-16 | 上海旌督机电科技有限公司 | Parasitic combined dust collecting device |
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| CN2813106Y (en) * | 2005-08-12 | 2006-09-06 | 施加美 | Electric-bag combined dust collector |
| CN201168531Y (en) * | 2008-03-17 | 2008-12-24 | 江苏科宝机械制造有限公司 | Electric bag combined dust collector |
| CN101732938A (en) * | 2008-11-26 | 2010-06-16 | 威海市正大环保设备有限公司 | Method and device for electric catching and dry-process purification of carbon baking flue gas |
| CN202666642U (en) * | 2012-07-17 | 2013-01-16 | 上海旌督机电科技有限公司 | Parasitic combined dust collecting device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111331252A (en) * | 2020-04-17 | 2020-06-26 | 大族激光科技产业集团股份有限公司 | Air draft dust removal method and system of large-breadth laser cutting machine tool |
| CN113941215A (en) * | 2020-07-17 | 2022-01-18 | 中冶长天国际工程有限责任公司 | Intermittent activated carbon powder purification system and purification method thereof |
| CN113941215B (en) * | 2020-07-17 | 2023-12-29 | 中冶长天国际工程有限责任公司 | Intermittent activated carbon dust purification method using intermittent activated carbon purification system |
| CN115228186A (en) * | 2022-06-18 | 2022-10-25 | 首钢智新迁安电磁材料有限公司 | Filtering device and filtering control method, device and equipment thereof |
| CN118417057A (en) * | 2024-07-02 | 2024-08-02 | 山西省安装集团股份有限公司 | Dust removing device for heat source plant |
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| CN102755806B (en) | 2016-04-20 |
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