CN108114562A - A kind of electricity bag compound dust-collection device and its processing method - Google Patents
A kind of electricity bag compound dust-collection device and its processing method Download PDFInfo
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- CN108114562A CN108114562A CN201711401750.XA CN201711401750A CN108114562A CN 108114562 A CN108114562 A CN 108114562A CN 201711401750 A CN201711401750 A CN 201711401750A CN 108114562 A CN108114562 A CN 108114562A
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Abstract
The present invention provides a kind of electric bag compound dust-collection device and its processing methods, the electricity bag compound dust-collection device includes being placed in the electric precipitation area of device lower part and the bag-type dust area being placed in above electric precipitation area, bottom of device one side is equipped with the gas inlet being connected with electric precipitation area, at the top of device the exhanst gas outlet being connected with bag-type dust area is equipped with gas inlet opposite side, the first deflector is equipped between gas inlet and electric precipitation area, the second deflector is set between electric precipitation area and bag-type dust area.Flue gas is upwardly into the progress dedusting of cloth bag area by electric precipitation area is charged with trapping in electricity bag compound dust-collection device of the present invention, avoid flue gas just washing away in face of filter cloth bag, the service life of filter cloth bag is improved, occupation area of equipment is reduced, rationally utilizes factory's usable floor area.Meanwhile by setting gas guide board, thus it is possible to vary the flow direction of air-flow increases flue gas in the residence time in electric precipitation area, flue gas stream is avoided to occur dead zone in electric precipitation area, increases efficiency of dust collection.
Description
Technical field
The present invention, which relates to, belongs to atmosphere pollution cleaning technology field, is related to a kind of electric bag compound dust-collection device and its processing side
It method more particularly to a kind of is used to carrying out particulate matter in flue gas pollutant effectively removing answering with the electric bag for reaching minimum discharge standard
Close dust-extraction unit and its processing method.
Background technology
It is had received widespread attention at present for the control of particulate matter in atmosphere pollution, the efficient device for removing dust
Including electric precipitator, bag filter and electric-bag complex dust collector etc..Wherein, electric precipitator has running resistance small, with model
The advantages that enclosing extensively and facilitating plant maintenance, but it is low for the removal efficiency of PM10.Bag filter is imitated for the removing of PM10
Rate is high, but it is too big to be confined to whole resistance.The form of electric-bag complex dust collector electric back pkt. before being generally adopted by, mesh
It is preceding mainly to be used extensively in steel and power industry.
101890270 A of CN disclose the combined dust remover of a kind of electric precipitation and electric bag-type dust, including inlet gas cigarette
Road, electric bag-type dust area and electric precipitation area are then disposed with 2 grades and 2 grades and are oriented to overdraught in electric bag-type dust area by preceding
Valve and airflow-distribution board, the air-flow guide valves at different levels are mutually arranged at an angle of 90.
CN 104324578A disclose a kind of Multifunction cloth bag dust collector, including：Rack is arranged on rack one side
Air inlet and the air outlet pipe for being arranged on frame upper end, are provided with bag filter, in the bag filter front end in rack
Rack on be provided with electric precipitator, the lower end of electric appliance deduster is provided with electric precipitation ash bucket, in the upper end of electric appliance deduster
Electric precipitation poppet is provided with, the air inlet in the electric appliance deduster front end is internally provided with gas-guide tube, in the gas-guide tube
Outside be provided with baffle liner, passage and passage are formed between the baffle liner and air inlet, after the electric appliance deduster
The machine frame inside at end is provided with outlet flow-guiding channel.
However, in the electric-bag complex dust collector of existing preceding electric back pkt., Electric Field in ESP wind speed is far above bag-type dust
The filtration velocity of area's filter cloth bag, filter cloth bag is washed away in meeting front when flue gas enters bag-type dust area by electric field, reduces filter cloth bag and uses
Service life, while bag filter interior flow field is caused to be unevenly distributed, filter cloth bag resistance increases, and influences efficiency of dust collection.
The content of the invention
Filter cloth bag service life reduction and bag filter present in electric-bag complex dust collector for existing preceding electric back pkt.
Interior flow field is unevenly distributed, and filter cloth bag resistance increases, the problems such as influencing efficiency of dust collection, and the present invention provides a kind of electric bag is compound
Dust-extraction unit and its processing method.Electric precipitation area is arranged under bag-type dust area in electricity bag compound dust-collection device of the present invention
Side, flue gas are upwardly into the progress dedusting of cloth bag area with trapping by electric precipitation area is charged, avoid flue gas just in face of filter cloth bag
It washes away, improves the service life of filter cloth bag, reduce occupation area of equipment, rationally utilize factory's usable floor area.Meanwhile pass through setting
Gas guide board is set between electric precipitation area entrance and electric precipitation area and bag-type dust area, thus it is possible to vary the flowing side of air-flow
To increasing flue gas in the residence time in electric precipitation area, flue gas stream avoided dead zone occur in electric precipitation area；It also can uniform flue gas gas
Stream reduces filter cloth bag resistance, increases efficiency of dust collection.
For this purpose, the present invention uses following technical scheme：
In a first aspect, the present invention provides a kind of electric bag compound dust-collection device, the electricity bag compound dust-collection device includes putting
In the electric precipitation area of device lower part and the bag-type dust area being placed in above electric precipitation area, described device bottom side is equipped with and is removed with electricity
The gas inlet that dirt area is connected, described device top are equipped with the flue gas being connected with bag-type dust area with gas inlet opposite side and go out
Mouthful, the first deflector is equipped between the gas inlet and electric precipitation area, is set between the electric precipitation area and bag-type dust area
Second deflector.
In the present invention, the electric precipitation area is placed in below bag-type dust area, and flue gas enters preceding process electric precipitation area after device
Charged and trapping is upwardly into cloth bag area and carries out dedusting.First deflector is set between the gas inlet and electric precipitation area, it should
First deflector is porous plate and/or the oblique fabric swatch form of air-flow, thus it is possible to vary the flow direction of air-flow increases flue gas in electric precipitation
The residence time in area avoids flue gas stream from dead zone occur in electric precipitation area.Deflector between electric precipitation area and bag-type dust area
It is arranged to the oblique fabric swatch form of air-flow, thus it is possible to vary into bag-type dust area airflow direction, avoid flue gas stream in bag-type dust area
Occur dead zone, while also can uniform flue gas stream, reduce filter cloth bag resistance, increase efficiency of dust collection.
The arrangement of the lower upper bag of electricity of the present invention, flue gas into bag-type dust area, avoid flue gas and just face from bottom to top
Filter cloth bag washes away, and improves the service life of filter cloth bag, while reduces occupation area of equipment, rationally utilizes factory's usable floor area.
Heretofore described " first " and " second " are not the restriction for using component order, it is only for component
The name for distinguishing and carrying out.
Below as currently preferred technical solution, but not as the limitation of technical solution provided by the invention, pass through
Following technical scheme can preferably reach and realize the technical purpose and advantageous effect of the present invention.
As currently preferred technical solution, the height in the bag-type dust area is 2 times~the 6 of electric precipitation area height
Times, it is preferably 3 times.
In the present invention, the height in the bag-type dust area need to be higher than electric precipitation area, be advisable with 2 times~6 times, it is therefore intended that increase
Add the dust-collecting area of filter cloth bag in bag-type dust area, reduce cloth filter cloth bag running resistance, while increase flue gas stream and removed in cloth bag
The dirt area residence time reduces filtration velocity, filter cloth bag filter efficiency.If electric precipitation area is as bag-type dust area height, flue gas
Air-flow is too short in the bag-type dust area residence time, and filter cloth bag running resistance increases, and efficiency of dust collection reduces, increase Fan Equipment operation
Energy consumption.
As currently preferred technical solution, bottom ash bucket is set below the electric precipitation area.
Preferably, the first ash removal equipment for flapping is set between the electric precipitation area and the bottom ash bucket.
As currently preferred technical solution, the electric precipitation area includes the cathode linear array being made of cathode line.
Wherein, the cathode linear array include at least 600 cathode lines, such as 600,700,800,1000,
1200,1500,2000 or 3000 etc., it is not limited to cited numerical value, interior other of the numberical range do not arrange
The numerical value of act is equally applicable.
Preferably, in the cathode linear array, often row at least set 30 cathode lines, such as 30,35,40,
45,50 etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable；Often
Row at least set 20 cathode lines, such as 20,25,30,35,40,45 etc., it is not limited to cited
Numerical value, other interior unrequited numerical value of the numberical range are equally applicable.
The number of cathode line included in heretofore described cathode linear array and often row and each column set cathode line
Number be adjusted correspondingly according to the exhaust gas volumn of the processing, be not limited in listed numberical range.
Preferably, often row cathode line both sides are provided with anode plate in the cathode linear array.
In the present invention, the cathode linear array and the anode plate composition electric field set, so that after flue gas enters electric precipitation area
It can carry out charged and trapping.
As currently preferred technical solution, the bag-type dust area includes the filter cloth bag array being made of filter cloth bag.
Wherein, the filter cloth bag array include at least 450 filter cloth bags, such as 450,470,500,530,
550,570,600,630 or 650 etc., it is not limited to cited numerical value, in the numberical range, other are not
The numerical value enumerated is equally applicable.
Preferably, in the filter cloth bag array, often row at least set 30 filter cloth bags, such as 30,35,40,
45 or 50 etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable；Often
Row at least set 15 filter cloth bags, such as 15,20,25,30 or 35 etc., it is not limited to cited number
Value, other interior unrequited numerical value of the numberical range are equally applicable.
The number of filter cloth bag included in heretofore described filter cloth bag array and often row and each column set filter cloth bag
Number be adjusted correspondingly according to the exhaust gas volumn of the processing, be not limited in listed numberical range.
Preferably, it is equipped with pulse ash remover at the top of the bag-type dust area.
As currently preferred technical solution, airflow uniform distribution is set before the first deflector in the gas inlet
Plate is used to make the flue gas smooth homogeneous into device.
As currently preferred technical solution, first deflector is porous plate and/or the oblique fabric swatch of air-flow.
Preferably, first deflector for air-flow oblique fabric swatch when, the oblique fabric swatch of air-flow includes at least two oblique fabric swatch,
Single oblique fabric swatch and horizontal angle are 120 °~135 °, for example, 120 °, 122 °, 124 °, 126 °, 128 °, 130 °, 133 ° or
135 ° etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable.Herein, institute
It is single oblique fabric swatch and horizontal angle using flow of flue gas direction as reference to state angle angle.
Preferably, first deflector is placed vertically.
Preferably, second deflector is the oblique fabric swatch of air-flow, and the oblique fabric swatch of air-flow includes at least two oblique fabric swatch, single
A oblique fabric swatch and horizontal angle are 90 °~120 °, for example, 90 °, 93 °, 95 °, 97 °, 100 °, 103 °, 105 °, 107 °,
110 °, 113 °, 115 °, 117 ° or 120 ° etc., it is not limited to cited numerical value, other are unrequited in the numberical range
Numerical value is equally applicable.Herein, the angle angle is single oblique fabric swatch and horizontal folder using flow of flue gas direction as reference
Angle.
Preferably, second deflector is horizontal positioned.
Preferably, second deflector is provided at both ends with the second ash removal equipment for flapping.
In the present invention, the oblique fabric swatch of air-flow refers to by multiple tablets and horizontal placement in a certain angle and parallel to each other puts
The gas guide board put.
In the present invention, during oblique for the air-flow fabric swatch of first deflector and the second deflector, oblique fabric swatch therein is both needed to incline
Tiltedly certain angle.If the single oblique fabric swatch of the first deflector and horizontal angle are 120 °~135 °, which is to make cigarette
To enter electric precipitation area as 120 °~135 ° directions with horizontal angle, uniform electric precipitation area air flow method is more than gas air-flow
This angle can make flue gas stream occur air-flow dead zone in electric precipitation area, reduce particulate matter removing efficiency in flue gas stream；Second leads
Single oblique fabric swatch and horizontal angle are 90 °~120 ° in flowing plate, the angle be to make flue gas stream with horizontal folder
Angle enters bag-type dust area for 90 °~120 ° directions, and uniform bag-type dust area air flow method can make flue gas stream more than this angle
Occur air-flow dead zone in bag-type dust area, reduce filter cloth bag filter efficiency.
Second aspect, the present invention provides the processing method of above-mentioned electric bag compound dust-collection device, the method is：
(a) pending flue gas enters electric precipitation area by gas inlet, carries out charged or trapping；
(b) enter bag-type dust area by the second deflector from bottom to top by charged or trapping flue gas to carry out at dedusting
It is discharged after reason from exhanst gas outlet.
In the present invention, it is according to particle concentration in flue gas that the pending flue gas, which carries out charged or trapping in electric precipitation area,
It is different and make choice.
As currently preferred technical solution, as particle concentration ＜ 5g/m in pending flue gas in step (a)3When,
Working voltage reduces in electric precipitation area, mainly the particulate matter in pending flue gas is carried out charged.
Preferably, when in pending flue gas in step (a) particle concentration be 5g/m3~50g/m3When, electric precipitation is transported in area
Row voltage raises, and mainly the particulate matter in pending flue gas is trapped.
Preferably, the arresting efficiency be 0~85%, such as 1%, 5%, 10%, 15%, 20%, 25%, 30%,
35%th, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80% or 85% etc., it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range.The arresting efficiency is mainly according to particle in flue gas
The concentration of object is adjusted, and to reduce the load in bag-type dust area, ensures that particulate matter meets minimum discharge requirement in exiting flue gas.
As currently preferred technical solution, the purge mode master of the electricity bag compound dust-collection device in the process of running
It is：
(A) deashing is carried out to the filter cloth bag in bag-type dust area using pulse ash remover；
(B) after carrying out deashing to filter cloth bag, the collection ash on the second deflector is carried out using the second ash removal equipment for flapping clear
Reason；
(C) after having cleared up the collection ash on the second deflector, using the first ash removal equipment for flapping to the sun in electric precipitation area
Pole plate carries out deashing, and final dust is fallen into bottom ash bucket.
In the present invention, the deashing process need to install certain order and carry out, i.e., first carry out deashing to bag-type dust area, then
Deashing is carried out to the second deflector, deashing finally is carried out to electric precipitation area, makes bag-type dust area, the second deflector and electric precipitation
Collection ash in area is from top to bottom fallen into bottom ash bucket.
Compared with prior art, the invention has the advantages that：
(1) electric precipitation area is arranged in below bag-type dust area in electric bag compound dust-collection device of the present invention, saves equipment
Floor space avoids flue gas just washing away in face of filter cloth bag, before making the service life of filter cloth bag in bag-type dust area more conventional after electricity
The electric-bag complex dust collector of bag improves 50%, and reduces occupation area of equipment；
(2) installing airflow uniform distribution plate and deflector in electric bag compound dust-collection device of the present invention makes electric precipitation area and cloth bag
Dedusting area air-flow is uniform, avoids the occurrence of air-flow dead zone, increases gas residence time, reduces filter cloth bag resistance, makes bag-type dust area
Efficiency of dust collection improve to more than 99.98%；
(3) electric bag compound dust-collection device of the present invention can select different according to the difference of particle concentration in flue gas
Discharge voltage carry out charged and trapping, arresting efficiency is adjusted according to particle concentration, reduces the load in bag-type dust area, protects
Particulate matter meets minimum discharge requirement in card exiting flue gas.
Description of the drawings
Fig. 1 is the front view of electric bag compound dust-collection device whole interior structure described in the embodiment of the present invention 1；
Fig. 2 is the left view of electric bag compound dust-collection device internal structure described in the embodiment of the present invention 1；
Fig. 3 is the top view in bag-type dust area in electric bag compound dust-collection device internal structure described in the embodiment of the present invention 1；
Fig. 4 is the top view in electric bag compound dust-collection device internal structure electric precipitation area described in the embodiment of the present invention 1；
Wherein, 1- bag-type dusts area, 2- electric precipitations area, 3- filter cloth bags, 4- anode plates, 5- cathode lines, 6- bottom ash buckets, 7- cigarettes
Gas import, 8- exhanst gas outlets, 9- airflow uniform distribution plates, the first deflectors of 10-, the second deflectors of 11-, the first vibration dust-cleanings of 12- dress
It puts, 13- pulse ash removers, the second ash removal equipment for flapping of 14-.
Specific embodiment
For the present invention is better described, technical scheme is readily appreciated, below to the present invention further specifically
It is bright.But following embodiments is only the simple example of the present invention, does not represent or limit the scope of the present invention, this
Invention protection domain is subject to claims.
Specific embodiment of the invention part provides a kind of electric bag compound dust-collection device and its processing method, the electricity bag
Compound dust-collection device includes the bag-type dust area 1 for being placed in the electric precipitation area 2 of device lower part and being placed in 2 top of electric precipitation area, described
Bottom of device one side is equipped with the gas inlet 7 being connected with electric precipitation area 2, is set at the top of described device with 7 opposite side of gas inlet
There is the exhanst gas outlet 8 being connected with bag-type dust area 1, the first deflector 10 be equipped between the gas inlet 7 and electric precipitation area 2,
Second deflector 11 is set between the electric precipitation area 2 and bag-type dust area 1.
Its processing method is：
(a) pending flue gas carries out charged or trapping by gas inlet 7 into electric precipitation area 2；
(b) removed from bottom to top by the second deflector 11 into bag-type dust area 1 by charged or trapping flue gas
It is discharged after dirt processing from exhanst gas outlet 8.
It is below present invention typical case but non-limiting example：
Embodiment 1：
A kind of electric bag compound dust-collection device and its processing method are present embodiments provided, as Figure 1-Figure 4, the electricity bag
Compound dust-collection device includes the bag-type dust area 1 for being placed in the electric precipitation area 2 of device lower part and being placed in 2 top of electric precipitation area, described
Bottom of device one side is equipped with the gas inlet 7 being connected with electric precipitation area 2, is set at the top of described device with 7 opposite side of gas inlet
There is the exhanst gas outlet 8 being connected with bag-type dust area 1, the first deflector 10 be equipped between the gas inlet 7 and electric precipitation area 2,
Second deflector 11 is set between the electric precipitation area 2 and bag-type dust area 1.
Wherein, the height in the bag-type dust area 1 is 2 times of 2 height of electric precipitation area, and 2 lower section of electric precipitation area sets bottom ash
Bucket 6, sets the first ash removal equipment for flapping 12 between electric precipitation area 2 and the bottom ash bucket 6；Electric precipitation area 2 is included by 5 groups of cathode line
Into 5 array of cathode line, 5 array of cathode line include 600 cathode lines 5, often row set 30 cathode lines 5, each column set 20
Cathode line 5, often 5 both sides of row cathode line be provided with anode plate 4；Bag-type dust area 1 includes 3 gusts of filter cloth bag being made of filter cloth bag 3
Row, 3 array of filter cloth bag include 450 filter cloth bags 3, and often row sets 30 filter cloth bags 3, and each column sets 15 filter cloth bags 3；Cloth bag removes
1 top of dirt area is equipped with pulse ash remover 13；Airflow uniform distribution plate 9 is set in gas inlet 7 before the first deflector 10；It is described
First deflector 10 is porous plate and vertical placement, and single oblique fabric swatch and horizontal angle are 120 °, the second deflector 11
For the oblique fabric swatch of air-flow and horizontal positioned, wherein single oblique fabric swatch and horizontal angle are 90 °, 11 both ends of the second deflector are set
There is the second ash removal equipment for flapping 14.
The processing method of described device is：
(a) particle concentration is 50g/m3Pending flue gas by gas inlet 7 through 9 and first water conservancy diversion of airflow uniform distribution plate
Plate 10 is trapped into electric precipitation area 2；
(b) flue gas by trapping carries out dust removal process by the second deflector 11 into bag-type dust area 1 from bottom to top
It is discharged afterwards from exhanst gas outlet 8；
The purge mode of described device in the process of running is mainly：
(A) deashing is carried out to the filter cloth bag 3 in bag-type dust area 1 using pulse ash remover 13；
(B) to filter cloth bag 3 carry out deashing after, using the second ash removal equipment for flapping 14 to the collection ash on the second deflector 11 into
Row cleaning；
(C) after having cleared up the collection ash on the second deflector 11, using the first ash removal equipment for flapping 12 in electric precipitation area 2
Anode plate 4 carry out deashing, final dust fallen into bottom ash bucket 6.
In the present embodiment, the dust-collecting efficiency in electric precipitation area 2 is 80%, and 1 dust-collecting efficiency of bag-type dust area is 99.982%, is gone out
Particle concentration is 4.2mg/m in mouth flue gas3。
Embodiment 2：
Present embodiments provide a kind of electric bag compound dust-collection device and its processing method, the electricity bag compound dust-collection device bag
It includes the electric precipitation area 2 for being placed in device lower part and is placed in the bag-type dust area 1 of 2 top of electric precipitation area, described device bottom side is set
There is the gas inlet 7 being connected with electric precipitation area 2, be equipped with and bag-type dust area 1 with 7 opposite side of gas inlet at the top of described device
Connected exhanst gas outlet 8 is equipped with the first deflector 10,2 He of electric precipitation area between the gas inlet 7 and electric precipitation area 2
Second deflector 11 is set between bag-type dust area 1.
Wherein, the height in the bag-type dust area 1 is 2 times of 2 height of electric precipitation area, and 2 lower section of electric precipitation area sets bottom ash
Bucket 6, sets the first ash removal equipment for flapping 12 between electric precipitation area 2 and the bottom ash bucket 6；Electric precipitation area 2 is included by 5 groups of cathode line
Into 5 array of cathode line, 5 array of cathode line include 750 cathode lines 5, often row set 30 cathode lines 5, each column set 25
Cathode line 5, often 5 both sides of row cathode line be provided with anode plate 4；Bag-type dust area 1 includes 3 gusts of filter cloth bag being made of filter cloth bag 3
Row, 3 array of filter cloth bag include 700 filter cloth bags 3, and often row sets 35 filter cloth bags 3, and each column sets 20 filter cloth bags 3；Cloth bag removes
1 top of dirt area is equipped with pulse ash remover 13；Airflow uniform distribution plate 9 is set in gas inlet 7 before the first deflector 10；It is described
First deflector 10 is the oblique fabric swatch of air-flow and places vertically, and tiltedly fabric swatch and horizontal line angle are 125 ° in the oblique fabric swatch of the air-flow, are made
The airflow direction that flue gas enters electric precipitation area 2 is 125 ° of horizontal line angle, and residence time of the flue gas in electric precipitation area 2 increases by 2
Second；Second deflector 11 is the oblique fabric swatch of air-flow and horizontal positioned, wherein single oblique fabric swatch and horizontal angle are 105 °, flue gas
Air-flow enters 1 airflow direction of bag-type dust area for 105 ° of horizontal line angle, and air-flow increases by 4 seconds in 1 residence time of bag-type dust area,
Second deflector 11 is provided at both ends with the second ash removal equipment for flapping 14.
The processing method of described device is：
(a) particle concentration is 50g/m3Pending flue gas by gas inlet 7 through 9 and first water conservancy diversion of airflow uniform distribution plate
Plate 10 is trapped into electric precipitation area 2；
(b) flue gas by trapping carries out dust removal process by the second deflector 11 into bag-type dust area 1 from bottom to top
It is discharged afterwards from exhanst gas outlet 8；
The purge mode of described device in the process of running is in the same manner as in Example 1.
In the present embodiment, the dust-collecting efficiency in electric precipitation area 2 is 82%, and 1 dust-collecting efficiency of bag-type dust area is 99.987%, is gone out
Particle concentration is 3.4mg/m in mouth flue gas3。
Embodiment 3：
A kind of electric bag compound dust-collection device and its processing method are present embodiments provided, the electricity bag compound dust-collection device
Structure is differed only in reference to structure in embodiment 1：
The height in bag-type dust area 1 is 4 times of 2 height of electric precipitation area；5 array of cathode line includes 1200 cathode lines 5, often
Row sets 40 cathode lines 5, and each column sets 30 cathode lines 5；3 array of filter cloth bag includes 750 filter cloth bags 3, and often row sets 30
A filter cloth bag 3, each column set 25 filter cloth bags 3；First deflector 10 is the oblique fabric swatch of air-flow and places vertically, the oblique fabric swatch of the air-flow
In tiltedly fabric swatch and horizontal line angle be 135 °, it is 135 ° of horizontal line angle that flue gas is made, which to enter the airflow direction in electric precipitation area 2, cigarette
Residence time of the gas in electric precipitation area 2 increases by 3 seconds；Second deflector 11 is the oblique fabric swatch of air-flow and horizontal positioned, wherein it is single tiltedly
Fabric swatch and horizontal angle are 120 °, and flue gas stream enters 1 airflow direction of bag-type dust area for 120 ° of horizontal line angle, air-flow
Increase by 6 seconds in 1 residence time of bag-type dust area.
The processing method of described device is differed only in reference to processing method in embodiment 1：Particle in pending flue gas
Object concentration is 25g/m3。
The purge mode of described device in the process of running is in the same manner as in Example 1.
In the present embodiment, the dust-collecting efficiency in electric precipitation area 2 is 85%, and 1 dust-collecting efficiency of bag-type dust area is 99.9975%,
Particle concentration is 1.7mg/m in exiting flue gas3。
Embodiment 4：
A kind of electric bag compound dust-collection device and its processing method are present embodiments provided, the electricity bag compound dust-collection device
Structure is differed only in reference to structure in embodiment 1：
The height in bag-type dust area 1 is 6 times of 2 height of electric precipitation area；5 array of cathode line includes 1350 cathode lines 5, often
Row sets 45 cathode lines 5, and each column sets 30 cathode lines 5；3 array of filter cloth bag includes 675 filter cloth bags 3, and often row sets 45
A filter cloth bag 3, each column set 15 filter cloth bags 3；First deflector 10 is the oblique fabric swatch of air-flow and places vertically, the oblique fabric swatch of the air-flow
In tiltedly fabric swatch and horizontal line angle be 135 °, it is 135 ° of horizontal line angle that flue gas is made, which to enter the airflow direction in electric precipitation area 2, cigarette
Residence time of the gas in electric precipitation area 2 increases by 3 seconds；Second deflector 11 is the oblique fabric swatch of air-flow and horizontal positioned, wherein it is single tiltedly
Fabric swatch and horizontal angle are 120 °, and flue gas stream enters 1 airflow direction of bag-type dust area for 120 ° of horizontal line angle, air-flow
Increase by 9 seconds in 1 residence time of bag-type dust area.
The processing method of described device is differed only in reference to processing method in embodiment 1：Particle in pending flue gas
Object concentration is 10g/m3。
The purge mode of described device in the process of running is in the same manner as in Example 1.
In the present embodiment, the dust-collecting efficiency in electric precipitation area 2 is 83%, and 1 dust-collecting efficiency of bag-type dust area is 99.994%, is gone out
Particle concentration is 1.5mg/m in mouth flue gas3。
Embodiment 5：
A kind of electric bag compound dust-collection device and its processing method are present embodiments provided, the electricity bag compound dust-collection device
Structure is differed only in reference to structure in embodiment 1：
The height in bag-type dust area 1 is 6 times of 2 height of electric precipitation area；First deflector 10 is the oblique fabric swatch of air-flow and vertical
It places, tiltedly fabric swatch and horizontal line angle are 135 ° in the oblique fabric swatch of the air-flow, and flue gas is made to enter the airflow direction in electric precipitation area 2 for water
135 ° of horizontal line angle, residence time of the flue gas in electric precipitation area 2 increase by 3 seconds；Second deflector 11 is the oblique fabric swatch of air-flow and water
Placing flat, wherein single oblique fabric swatch and horizontal angle are 120 °, flue gas stream enters 1 airflow direction of bag-type dust area for water
120 ° of horizontal line angle, air-flow increase by 9 seconds in 1 residence time of bag-type dust area.
The processing method of described device is：
(a) particle concentration is 3g/m3Pending flue gas, into electric precipitation area 2, is reduced cathode line and put by gas inlet 7
Piezoelectric voltage, particulate matter carry out charged in the electric field；
(b) by the second deflector 11 dust removal process is carried out into bag-type dust area 1 from bottom to top by charged flue gas
It is discharged afterwards from exhanst gas outlet 8.
The purge mode of described device in the process of running is in the same manner as in Example 1.
In the present embodiment, 1 dust-collecting efficiency of bag-type dust area is 99.995%, and particle concentration is in exiting flue gas
1.12mg/m3。
Comparative example 1：
This comparative example uses device described in 101890270 A of CN to particle concentration for 50g/m3Pending flue gas,
Flue gas is handled using the electric-bag complex dust collector of preceding electric back pkt..
In this comparative example, the dust-collecting efficiency in electric precipitation area 2 is 78%, and 1 dust-collecting efficiency of bag-type dust area is 99.873%, is gone out
Particle concentration is 13.7mg/m in mouth flue gas3。
Comparative example 2：
This comparative example uses device described in 104324578 A of CN to particle concentration for 50g/m3Pending flue gas,
Flue gas is handled using the electric-bag complex dust collector of preceding electric back pkt..
In this comparative example, the dust-collecting efficiency in electric precipitation area 2 is 78%, and 1 dust-collecting efficiency of bag-type dust area is 99.895%, is gone out
Particle concentration is 11.55mg/m in mouth flue gas3。
Comparative example 3：
This comparative example provides a kind of electric bag compound dust-collection device and its processing method, and the structure of described device is with reference to implementation
Structure in example 1, difference lies in：The first deflector 10 is not provided with before electric precipitation area 2.
The processing method of described device is with reference to processing method in embodiment 1.
In this comparative example, the dust-collecting efficiency in electric precipitation area 2 is 78%, and 1 dust-collecting efficiency of bag-type dust area is 99.932%, is gone out
Particle concentration is 7.48mg/m in mouth flue gas3。
Comparative example 4：
This comparative example provides a kind of electric bag compound dust-collection device and its processing method, and the structure of described device is with reference to implementation
Structure in example 1, difference lies in：The second deflector 11 is not provided between electric precipitation area 2 and bag-type dust area 1.
The processing method of described device is with reference to processing method in embodiment 1.
In this comparative example, the dust-collecting efficiency in electric precipitation area 2 is 80%, and 1 dust-collecting efficiency of bag-type dust area is 99.947%, is gone out
Particle concentration is 5.3mg/m in mouth flue gas3。
Summary embodiment and comparative example can be seen that electric precipitation area cloth in electric bag compound dust-collection device of the present invention
It puts below bag-type dust area, saves occupation area of equipment, avoid flue gas just washing away in face of filter cloth bag, make bag-type dust area
The electric-bag complex dust collector of the service life more conventional preceding electric back pkt. of middle filter cloth bag improves 50%, and reduces equipment and take up an area face
Product；
Meanwhile installation airflow uniform distribution plate makes electric precipitation area and cloth with deflector in electric bag compound dust-collection device of the present invention
Bag dedusting area air-flow is uniform, avoids the occurrence of air-flow dead zone, increases gas residence time, reduces filter cloth bag resistance, make bag-type dust
The efficiency of dust collection in area is improved to more than 99.98%；
Also, electricity bag compound dust-collection device of the present invention can select not according to the difference of particle concentration in flue gas
Same discharge voltage carries out charged and trapping, arresting efficiency and is adjusted according to particle concentration, reduces the load in bag-type dust area,
Ensure that particulate matter meets minimum discharge requirement in exiting flue gas.
Applicant declares, and the present invention illustrates the detailed applications method of the present invention by above-described embodiment, but the present invention is simultaneously
Above-mentioned detailed applications method is not limited to, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implement.Affiliated skill
The technical staff in art field is it will be clearly understood that any improvement in the present invention, to the equivalence replacement and auxiliary of products material of the present invention
Selection of the addition of ingredient, concrete operations condition and mode etc., all falls within protection scope of the present invention and the open scope.
Claims (10)
1. a kind of electricity bag compound dust-collection device, which is characterized in that the electricity bag compound dust-collection device includes being placed in device lower part
Electric precipitation area (2) and the bag-type dust area (1) being placed in above electric precipitation area (2), described device bottom side is equipped with and electric precipitation
The connected gas inlet (7) in area (2), described device top is equipped with gas inlet (7) opposite side and bag-type dust area (1) phase
Exhanst gas outlet (8) even is equipped with the first deflector (10), the electric precipitation between the gas inlet (7) and electric precipitation area (2)
Second deflector (11) is set between area (2) and bag-type dust area (1).
2. electricity bag compound dust-collection device according to claim 1, which is characterized in that the height of the bag-type dust area (1)
It is 2 times~6 times of electric precipitation area (2) height, is preferably 3 times.
3. electricity bag compound dust-collection device according to claim 1 or 2, which is characterized in that set below the electric precipitation area (2)
Bottom set ash bucket (6)；
Preferably, the first ash removal equipment for flapping (12) is set between the electric precipitation area (2) and the bottom ash bucket (6).
4. according to claim 1-3 any one of them electricity bag compound dust-collection devices, which is characterized in that the electric precipitation area (2)
Including cathode line (5) array being made of cathode line (5)；
Preferably, often row cathode line (5) both sides are provided with anode plate (4) in cathode line (5) array.
5. according to claim 1-4 any one of them electricity bag compound dust-collection devices, which is characterized in that the bag-type dust area
(1) filter cloth bag (3) array being made of filter cloth bag (3) is included；
Preferably, it is equipped with pulse ash remover (13) at the top of the bag-type dust area (1).
6. according to claim 1-5 any one of them electricity bag compound dust-collection devices, which is characterized in that in the gas inlet
(7) airflow uniform distribution plate (9) is set in before the first deflector (10).
7. according to claim 1-6 any one of them electricity bag compound dust-collection devices, which is characterized in that first deflector
(10) it is porous plate and/or the oblique fabric swatch of air-flow；
Preferably, first deflector (10) for air-flow oblique fabric swatch when, the oblique fabric swatch of air-flow includes at least two oblique fabric swatch,
Single oblique fabric swatch and horizontal angle are 120 °~135 °；
Preferably, first deflector (10) is placed vertically；
Preferably, second deflector (11) is the oblique fabric swatch of air-flow, and the oblique fabric swatch of air-flow includes at least two oblique fabric swatch, single
A oblique fabric swatch and horizontal angle are 90 °~120 °；
Preferably, second deflector (11) is horizontal positioned；
Preferably, second deflector (11) is provided at both ends with the second ash removal equipment for flapping (14).
8. according to the processing method of claim 1-7 any one of them electricity bag compound dust-collection devices, which is characterized in that the side
Method is：
(a) pending flue gas carries out charged or trapping by gas inlet (7) into electric precipitation area (2)；
(b) removed from bottom to top by the second deflector (11) into bag-type dust area (1) by charged or trapping flue gas
It is discharged after dirt processing from exhanst gas outlet (8).
9. processing method according to claim 8, which is characterized in that when particulate matter is dense in pending flue gas in step (a)
Spend ＜ 5g/m3When, working voltage reduces in electric precipitation area (2), mainly the particulate matter in pending flue gas is carried out charged；
Preferably, when in pending flue gas in step (a) particle concentration be 5g/m3~50g/m3When, fortune in electric precipitation area (2)
Row voltage raises, and mainly the particulate matter in pending flue gas is trapped；
Preferably, the arresting efficiency is 0~85%.
10. processing method according to claim 8 or claim 9, which is characterized in that the electricity bag compound dust-collection device was being run
Purge mode in journey is mainly：
(A) deashing is carried out to the filter cloth bag (3) in bag-type dust area (1) using pulse ash remover (13)；
(B) after carrying out deashing to filter cloth bag (3), using the second ash removal equipment for flapping (14) to the collection ash on the second deflector (11)
It is cleared up；
(C) after having cleared up the collection ash on the second deflector (11), using the first ash removal equipment for flapping (12) to electric precipitation area (2)
In anode plate (4) carry out deashing, final dust fallen into bottom ash bucket (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711401750.XA CN108114562A (en) | 2017-12-22 | 2017-12-22 | A kind of electricity bag compound dust-collection device and its processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711401750.XA CN108114562A (en) | 2017-12-22 | 2017-12-22 | A kind of electricity bag compound dust-collection device and its processing method |
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| CN114632623A (en) * | 2022-03-17 | 2022-06-17 | 中国电建集团成都勘测设计研究院有限公司 | Electric filtering integrated tail flue gas purification device |
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Application publication date: 20180605 |