CN102430313A - Front-bag and rear-electricity combined flow distribution deduster - Google Patents
Front-bag and rear-electricity combined flow distribution deduster Download PDFInfo
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- CN102430313A CN102430313A CN2011103748839A CN201110374883A CN102430313A CN 102430313 A CN102430313 A CN 102430313A CN 2011103748839 A CN2011103748839 A CN 2011103748839A CN 201110374883 A CN201110374883 A CN 201110374883A CN 102430313 A CN102430313 A CN 102430313A
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- electric precipitation
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Abstract
The invention relates to a front-bag and rear-electricity combined flow distribution deduster, which comprises a dedusting box body, an air inlet pipe and an air outlet pipe which are communicated with the dedusting box body and an ash bucket connected to the lower part of the dedusting box body, wherein the dedusting box body comprises a bag dedusting box body and an electric dedusting box body; the air inlet pipe comprises a bag dedusting air inlet pipe communicated with the bag dedusting box body and an electric dedusting air inlet pipe which is communicated with the electric dedusting box body; the bag dedusting air inlet pipe is provided with a bag dedusting air inlet valve, and the electric dedusting air inlet pipe is provided with an electric dedusting air inlet valve; and the air outlet pipe is communicated with the bag dedusting box body and the electric dedusting box body. The front-bag and rear-electricity combined flow distribution duster integrates the advantages of an electric deduster and a bag type deduster, the electric deduster and the electric deduster run in a partition mode and are switched mutually, and the characteristics of the electric deduster and the bag type deduster are exerted to meet the requirements of working conditions that a boiler is frequently halted and started; and by the front-bag and rear-electricity combined flow distribution deduster, the damage of pipe explosion of the boiler to a filter bag is avoided effectively, the safety of the filter bag is ensured, bypass smoke gas can be purified effectively during the starting of fuel oil in the boiler, and the requirement of environmental protection is met.
Description
Technical field
the present invention relates to the combined shunting deduster of a kind of preceding bag back electricity.
Background technology
It is charged in high voltage electric field that the dust removal mechanism of
electric cleaner is based on dust, and then be trapped on the dust collecting pole plate and reach the purpose that grey gas separates.Fine dust is because particle diameter is little, in light weight, and carrying capacity own is low, and because the reasons such as " reentrainment of dusts " that produces of vibration dust-cleaning, very difficultly collected by electric cleaner.The dust removal mechanism that can be described as electric cleaner itself has limited the further raising of its efficiency of dust collection, and conventional electric cleaner will reach 30mg/Nm 3 This new discharge standard is difficulty or uneconomical very.
sack cleaner is to reach the dedusting purpose through filtrate and attached to the mechanical filter effect of the dust layer on the filtrate.The fine dust that electric cleaner is difficult to capture adopts sack cleaner then to be easy to be collected.Maximum characteristics in the sack cleaner performance are efficiency of dust collections of its superelevation, and some factors bigger to electric cleaner efficiency of dust collection influence (like the fluctuation of dust specific resistance, smoke components, inlet dust concentration, exhaust gas volumn etc.) almost do not have much influences to the efficiency of dust collection of sack cleaner.In the face of more strict dust emission standard, bag type dust removing technology can satisfy the needs of the reliable and stable operation of fire coal boiler fume dedusting fully.
filter bag is the critical elements in the sack cleaner, and in the flue-gas temperature scope that is fit to the filter bag material capability, sack cleaner has very high efficiency of dust collection during the filter bag operate as normal.Flue-gas temperature raises suddenly in the dust pelletizing system in order to avoid; Or when boiler take place to be economized coal gas, reheater, superheater, water-cooling wall four-tube leakage or booster; Particularly under the situation of boiler frequent shutdown; The oil smoke that produces during ignition trigger again after the shutdown can produce harmful effect to the use of filter bag, therefore, and a kind of instructions for use that can satisfy sack cleaner; Possessing the deduster of flue dust that electric cleaner can adapt to high temperature, high humidity, oily again in order to solve the problem that above-mentioned known deduster structure exists, all is very urgent technically and economically.
Summary of the invention
the purpose of this invention is to provide the combined shunting deduster of a kind of preceding bag back electricity.
For achieving the above object, the technical scheme that the present invention adopts is:
The combined shunting deduster of bag back electricity before
are a kind of; Comprise dust-removing box, the blast pipe and the discharge pipe that are connected with described dust-removing box and the ash bucket that is connected described dust-removing box bottom, described dust-removing box comprises a bag dust-removing box, electric precipitation casing; Described blast pipe comprises the bag dedusting blast pipe that is connected with described bag dust-removing box, the electric precipitation blast pipe that is connected with described electric precipitation casing; Described bag dedusting blast pipe is provided with marsupial dedusting air intake valve, and described electric precipitation blast pipe is provided with electric precipitation air intake valve; Described discharge pipe is connected with described bag dust-removing box, electric precipitation casing simultaneously.
preferably; Described blast pipe is a four-way pipe; Described four-way pipe comprises an air intake house steward, two described bag dedusting blast pipes, a described electric precipitation blast pipe, and described air intake house steward is connected with described bag dedusting blast pipe, electric precipitation blast pipe.
preferably, described bag dedusting air intake valve is the multiple-blade sealed butterfly valve.
preferably, described electric precipitation air intake valve is that pressure type does not have the external leakage valve.
preferably, described bag dust-removing box comprises casing in a bag dedusting upper box, the bag dedusting, in the described bag dedusting upper box marsupial removing dust and clearing ash blowing device is set, and in the casing marsupial dedusting filter is set in the dedusting of described bag; Described bag dedusting upper box connects marsupial dedusting upper box discharge pipe, and described bag dedusting upper box discharge pipe is connected with discharge pipe.
further preferably, described electric precipitation blast pipe passes the back from described bag dedusting upper box inside and is connected with described electric precipitation casing.
preferably are connected with electric precipitation air intake mozzle between described electric precipitation blast pipe and the electric precipitation casing, be provided with the electric precipitation airflow-distribution board in the described electric precipitation air intake mozzle.
preferably are provided with marsupial dedusting air flow guiding plate in the described bag dedusting blast pipe.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
The advantage of the present invention's comprehensive utilization and combination electric cleaner and bag dust collector: bag dust collector is behind the ignition of the boiler normal operation input; Flue-gas temperature, humidity are normal, and the bag dust collector subregion puts into operation, utilizes the high efficiency filter device to carry out intensive filtration; To satisfy fume emission requirement up to standard; It is stable to have dust removing effects, and concentration of emission is low, the characteristics of excellent performance;
electric precipitation subregion is mainly used in the oil smoke that produces when capturing ignition of the boiler; When boiler take place to be economized coal gas, reheater, superheater, water-cooling wall four-tube leakage or booster; Also can switch to the electric precipitation subregion, avoid the oil smoke of high temperature, high humidity and situation that bag dust collector can not be put into operation, conventional bag dust collector flue gas when above-mentioned situation is discharged from by-pass line; If boiler frequent shutdown frequent starting igniting again; A large amount of flue gases pollute atmosphere from by-pass line discharge meeting, then can collect flue dust during the work of electric precipitation subregion, reduce atmosphere pollution.
Description of drawings
Accompanying drawing 1 is the front view of present embodiment;
Accompanying drawing 2 is the vertical view of present embodiment;
Accompanying drawing 3 is the left view of present embodiment;
Accompanying drawing 4 is an A-A cutaway view in the accompanying drawing 1;
accompanying drawing 5 is a B-B cutaway view in the accompanying drawing 1.
wherein: 1, bag dedusting air intake valve; 2, air intake house steward; 3, bag dedusting air flow guiding plate; 4, casing in the bag dedusting; 5, electric precipitation air intake valve; 6, bag dedusting upper box; 7, bag removing dust and clearing ash blowing device; 8, electric precipitation air intake mozzle; 9, electric precipitation airflow-distribution board; 10, electric precipitation casing; 11, bag dedusting discharge pipe; 12, airduct before the electric precipitation air intake valve; 13, bag dedusting upper box discharge pipe; 14, deduster air intake four-way pipe; 15, air-out house steward; 16, airduct behind the electric precipitation air intake valve; 17, bag dedusting filter; 18, bag dedusting blast pipe.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
The combined shunting deduster of a kind of preceding bag back electricity that
are as shown in the figure comprises dust-removing box, the blast pipe that is connected with dust-removing box and discharge pipe and the ash bucket that is connected the dust-removing box bottom.Specifically:
dust-removing box comprises a bag dust-removing box, electric precipitation casing 10; Wherein: the bag dust-removing box comprises casing 4 in a bag dedusting upper box 6, the bag dedusting; In the bag dedusting upper box 6 marsupial removing dust and clearing ash blowing device 7 is set, in the casing 4 marsupial dedusting filter 17 is set in the bag dedusting.Well-equipped electric dust collector in the electric precipitation casing 10.
blast pipe comprises: the bag dedusting blast pipe 18 that is connected with the bag dust-removing box, the electric precipitation blast pipe that is connected with electric precipitation casing 10; In the present embodiment: blast pipe adopts deduster air intake four-way pipe 14; Promptly comprise an air intake house steward 2, two bag dedusting blast pipes 18, an electric precipitation blast pipe, air intake house steward 2 is connected with a bag dedusting blast pipe 18, electric precipitation blast pipe.Air intake house steward 2, two bag dedusting blast pipes 18 constitute bag dedusting air intake parts; Air intake house steward 2, electric precipitation air intake constitute electric precipitation air intake part.
bag dedusting blast pipe 18 front ends are provided with marsupial dedusting air intake valve 1, and the electric precipitation blast pipe is provided with electric precipitation air intake valve 5, and bag dedusting air intake valve 1 is the multiple-blade sealed butterfly valve, and electric precipitation air intake valve 5 does not have the external leakage valve for pressure type.Bag dedusting air intake valve 1 is arranged on bag arrival end of dedusting blast pipe 18; Electric precipitation air intake valve 5 is arranged on electric precipitation blast pipe stage casing; And the electric precipitation blast pipe is divided into airduct 16 behind airduct 12 before the electric precipitation air intake valve, the electric precipitation air intake valve; Airduct 16 is connected to electric precipitation casing 10 after passing from bag dedusting upper box 6 inside behind the electric precipitation air intake valve, and two bag dedusting blast pipes 18 are arranged on the both sides of blast pipe 12 before the electric precipitation air intake valve.
in addition; Marsupial dedusting air flow guiding plate 3 is set in bag dedusting blast pipe 18; Be connected with electric precipitation air intake mozzle 8 between electric precipitation blast pipe 5 and the electric precipitation casing 10; Be provided with electric precipitation airflow-distribution board 9 in the electric precipitation air intake mozzle 8, be connected with electric precipitation air intake mozzle 8 after airduct 16 passes from bag dedusting upper box 6 inside behind the electric precipitation air intake valve.
discharge pipe comprises: the bag dedusting upper box discharge pipe 13 that bag dedusting upper box 6 connects, and bag dedusting upper box discharge pipe 13 is connected with bag dedusting discharge pipe 11, and bag dedusting discharge pipe 11 is connected with air-out house steward 15; And the discharge pipe of electric precipitation casing 10 directly uses air-out house steward 15.
Below the concrete operation principle of present embodiment down of setting forth:
The flue gas that comes from boiler is the electric combined shunting deduster blast pipe in bag back before flue enters into:
Again during ignition trigger, this moment, a bag dust-removing box did not move, and closed two bag dedusting air intake valves 1 of bag dust-removing box, opened electric precipitation air intake valve 5 after boiler is shut down
, and electric precipitation casing 10 puts into operation, the oil smoke that produces when capturing igniting.Flue gas enters into electric precipitation casing 10 after electric precipitation airflow-distribution board 9 distributes; Be provided with polar curve and pole plate in the electric precipitation subregion electric field; Dust in flue gas is through having the passage of dc high voltage electric field; Dust is by charged, and the dust that has negative electrical charge tends to pole plate under the effect of electric field force, and dust is adsorbed on the pole plate and discharges electric charge; Through mechanical vibrator mechanism pole plate is carried out vibration dust-cleaning, accumulate in dust on the pole plate and just shaken and fall in the ash bucket;
are behind the ignition of the boiler normal operation input; Two bag dedusting air intake valves 1 of opened pocket dust-removing box, the bag dust-removing box puts into operation, and electric precipitation casing 10 does not move at this moment; Close electric precipitation air intake valve 5; Boiler smoke gets into bag dedusting blast pipe 18, and bag dedusting blast pipe 18 set inside marsupial dedusting air flow guiding plates 3 have been avoided big dust particle washing away filter bag under the inertia force effect effectively; Flue gas stream gets into casing 4 filter bag bins in the bag dedusting through bag dedusting air flow guiding plate 3 backs; Flue gas stream evenly rises in the filter bag bin; Flue dust is through bag dedusting filter 17, and the clean gas after the filtration gets into air-out house steward 15 through bag dedusting upper box discharge pipe 13 and bag dedusting discharge pipe 11.
The combined shunting deduster of bag back electricity can be transformed through electric cleaner before
were of the present invention.Wherein: former electric cleaner is single chamber three electric field structures, keeps the 3rd electric field at this, has utilized the shell of original electric cleaner; Keep the ash bucket parts, and carry out corresponding transformation, behind devices such as the polar curve of having removed first and second electric field, pole plate, rapping apparatus, inner aisle, high tension silicon rectifier; On the casing of first and second electric field, add pack dust-removing box parts; Filter bag, cage bone are installed, the filter bag ash removal blowing device is set, set up the bag dust removal part.
present embodiment is divided into two subregions, and one is to be the electric precipitation subregion, and another is a bag dedusting subregion.Taked special drainage, part flow arrangement again between two subregion dedusting methods, made two zones separately.Boiler smoke when bag dedusting subregion is collected normal the operation utilizes the high efficiency filter device to carry out intensive filtration, to satisfy fume emission requirement up to standard; The electric precipitation subregion is mainly used in the oil smoke that produces when capturing ignition of the boiler; Simultaneously, in normal operation, when temporary derangement takes place for either party in two dedusting subregions, can switch to another subregion, have stronger mutual compensating.Deduster can be devoted oneself to work through the electric precipitation subregion of deduster when boiler frequent shutdown, frequent starting, has avoided conventional bag dust collector need directly enter the situation of atmosphere this moment through by-pass flue, has reduced in line pollution to atmosphere greatly.
The combined shunting deduster of bag back electricity was specially adapted to the electric cleaner transformation project before
were of the present invention; The combined shunting deduster of preceding bag back electricity has combined electric cleaner and sack cleaner advantage separately effectively; Bag dust collector and electric cleaner partition running; Switch each other, give full play to the characteristics of electric cleaner and sack cleaner, to satisfy the working condition requirement of boiler frequent shutdown, frequent starting; Can also protect effectively simultaneously since during the boiler booster to the infringement of filter bag; Because the existence of electric cleaner subregion is arranged, when coal gas, reheater, superheater, water-cooling wall four-tube leakage or booster took place to economize boiler, the air intake valve before the bag dedusting subregion can in time be closed according to control signal; Avoid in the air-flow steam to the direct impact of filter bag; Switch to electric cleaner subregion with air-flow this moment, and the electric cleaner subregion can carry out dedusting work under the flue gas condition of high temperature, high humidity, and removes the flue dust in the flue gas; Both guarantee the safety of filter bag, satisfied requirement on environmental protection again.
the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. the combined shunting deduster of bag back electricity before a kind; Comprise dust-removing box, the blast pipe and the discharge pipe that are connected with described dust-removing box and the ash bucket that is connected described dust-removing box bottom, it is characterized in that: described dust-removing box comprises a bag dust-removing box, electric precipitation casing; Described blast pipe comprises the bag dedusting blast pipe that is connected with described bag dust-removing box, the electric precipitation blast pipe that is connected with described electric precipitation casing; Described bag dedusting blast pipe is provided with marsupial dedusting air intake valve, and described electric precipitation blast pipe is provided with electric precipitation air intake valve; Described discharge pipe is connected with described bag dust-removing box, electric precipitation casing simultaneously.
2. the combined shunting deduster of bag back electricity before according to claim 1; It is characterized in that: described blast pipe is a four-way pipe; Described four-way pipe comprises an air intake house steward, two described bag dedusting blast pipes, a described electric precipitation blast pipe, and described air intake house steward is connected with described bag dedusting blast pipe, electric precipitation blast pipe.
3. the combined shunting deduster of bag back electricity before according to claim 1 is characterized in that: described bag dedusting air intake valve is the multiple-blade sealed butterfly valve.
4. the combined shunting deduster of bag back electricity before according to claim 1, it is characterized in that: described electric precipitation air intake valve is that pressure type does not have the external leakage valve.
5. the combined shunting deduster of bag back electricity before according to claim 1; It is characterized in that: described bag dust-removing box comprises casing in a bag dedusting upper box, the bag dedusting; In the described bag dedusting upper box marsupial removing dust and clearing ash blowing device is set, in the casing marsupial dedusting filter is set in the dedusting of described bag; Described bag dedusting upper box connects marsupial dedusting upper box discharge pipe, and described bag dedusting upper box discharge pipe is connected with discharge pipe.
6. the combined shunting deduster of bag back electricity before according to claim 5 is characterized in that: described electric precipitation blast pipe is connected to described electric precipitation casing after passing from described bag dedusting upper box inside.
7. the combined shunting deduster of bag back electricity before according to claim 1; It is characterized in that: be connected with electric precipitation air intake mozzle between described electric precipitation blast pipe and the electric precipitation casing, be provided with the electric precipitation airflow-distribution board in the described electric precipitation air intake mozzle.
8. the combined shunting deduster of bag back electricity before according to claim 1 is characterized in that: in the described bag dedusting blast pipe marsupial dedusting air flow guiding plate is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374883.9A CN102430313B (en) | 2011-11-23 | 2011-11-23 | Front-bag and rear-electricity combined flow distribution deduster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374883.9A CN102430313B (en) | 2011-11-23 | 2011-11-23 | Front-bag and rear-electricity combined flow distribution deduster |
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| Publication Number | Publication Date |
|---|---|
| CN102430313A true CN102430313A (en) | 2012-05-02 |
| CN102430313B CN102430313B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110374883.9A Active CN102430313B (en) | 2011-11-23 | 2011-11-23 | Front-bag and rear-electricity combined flow distribution deduster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706474A (en) * | 2013-12-23 | 2014-04-09 | 科林环保装备股份有限公司 | Electric-bag combination type flow-dividing three-state dust collector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2695087Y (en) * | 2003-04-15 | 2005-04-27 | 罗思玲 | Electron-bag combined dust separator |
| CN201140022Y (en) * | 2007-12-14 | 2008-10-29 | 陈茂荣 | Electric bag composite dust wiper |
-
2011
- 2011-11-23 CN CN201110374883.9A patent/CN102430313B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2695087Y (en) * | 2003-04-15 | 2005-04-27 | 罗思玲 | Electron-bag combined dust separator |
| CN201140022Y (en) * | 2007-12-14 | 2008-10-29 | 陈茂荣 | Electric bag composite dust wiper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706474A (en) * | 2013-12-23 | 2014-04-09 | 科林环保装备股份有限公司 | Electric-bag combination type flow-dividing three-state dust collector |
| CN103706474B (en) * | 2013-12-23 | 2016-02-10 | 科林环保装备股份有限公司 | A kind of electric bag combined shunting three condition deduster |
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| Publication number | Publication date |
|---|---|
| CN102430313B (en) | 2014-04-30 |
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Effective date of registration: 20160809 Address after: Split eight communities in Wujiang District of Suzhou City, Jiangsu province 215000 Patentee after: Environmental Protection Technology Co., Ltd. Address before: Songling town of Wujiang city Suzhou city Jiangsu province 215222 split eight community traffic road No. 8 Patentee before: Kelin Environmental Protection Equipment, Inc. |
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| CB03 | Change of inventor or designer information |
Inventor after: Xu Tianping Inventor after: Chen Yingming Inventor before: Chen Yingming |
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| COR | Change of bibliographic data |