CN102430313B - 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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- CN102430313B CN102430313B CN201110374883.9A CN201110374883A CN102430313B CN 102430313 B CN102430313 B CN 102430313B CN 201110374883 A CN201110374883 A CN 201110374883A CN 102430313 B CN102430313 B CN 102430313B
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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 the rear electricity of a kind of front bag.
Background technology
the dust removal mechanism of electric cleaner is charged in high voltage electric field based on dust, and then is trapped on dust collecting pole plate and reaches the object that grey gas separates.Fine dust is because particle diameter is little, lightweight, and carrying capacity own is low, and the reason such as " reentrainment of dust " that produce due to vibration dust-cleaning, is difficult to be 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 very difficult or uneconomical.
sack cleaner is to reach dedusting object by filtrate and the mechanical filter effect that is attached to the dust layer on filtrate.The fine dust that electric cleaner is difficult to trapping adopts sack cleaner to be easy to be collected.Maximum feature in sack cleaner performance is the efficiency of dust collection of its superelevation, and some factors larger on ESP Efficiency impact (as the fluctuation of dust specific resistance, smoke components, entrance dust concentration, exhaust gas volumn etc.) efficiency of dust collection of sack cleaner is not almost had to much impacts.In the face of more strict dust emission standard, bag type dust removing technology can meet the needs of the reliable and stable operation of fire coal boiler fume dedusting completely.
filter bag is the critical elements in sack cleaner, is being applicable within the scope of the flue-gas temperature of filter bag material capability, and when filter bag is normally worked, sack cleaner has very high efficiency of dust collection.For avoiding flue-gas temperature in dust pelletizing system to raise suddenly; or when boiler occurs to economize coal gas, reheater, superheater, water-cooling wall four-tube leakage or booster; particularly the in the situation that of boiler frequent shutdown; the oil smoke producing during ignition trigger again after shutdown can produce harmful effect to the use of filter bag; therefore; a kind of instructions for use that can meet sack cleaner; possessing again the problem that deduster that electric cleaner can adapt to the flue dust of high temperature, high humidity, oily exists in order to solve above-mentioned known deduster structure, is all very urgent technically and economically.
Summary of the invention
the object of this invention is to provide the combined shunting deduster of the rear electricity of a kind of front bag.
for achieving the above object, the technical solution used in the present invention is:
a combined shunting deduster for electricity after front bag, blast pipe and the discharge pipe that comprise dust-removing box, is connected with described dust-removing box and be connected to described in the ash bucket of 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 being connected with described bag dust-removing box, the electric precipitation blast pipe being connected with described electric precipitation casing, described bag dedusting blast pipe arranges marsupial dedusting air inlet valve, and described electric precipitation blast pipe is provided with electric precipitation air inlet valve; Described discharge pipe is connected with described bag dust-removing box, electric precipitation casing simultaneously.
preferably, described blast pipe is four-way pipe, described four-way pipe comprises the electric precipitation blast pipe described in bag dedusting blast pipe described in an air intake house steward, two,, and described air intake house steward is connected with described bag dedusting blast pipe, electric precipitation blast pipe.
preferably, described bag dedusting air inlet valve is multiple-blade sealed butterfly valve.
preferably, described electric precipitation air inlet valve is that pressure type leakage less leaks valve.
preferably, described bag dust-removing box comprises casing in a bag dedusting upper box, bag dedusting, in described bag dedusting upper box, marsupial removing dust and clearing ash blowing device is set, and in described bag dedusting, in casing, marsupial dedusting filter is set; 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 is connected with described electric precipitation casing from described inner the passing of bag dedusting upper box.
preferably, between described electric precipitation blast pipe and electric precipitation casing, be connected with electric precipitation air intake mozzle, in described electric precipitation air intake mozzle, be provided with electric precipitation airflow-distribution board.
preferably, in described bag dedusting blast pipe, marsupial dedusting air flow guiding plate is set.
because technique scheme is used, the present invention compared with prior art has following advantages:
the advantage of the present invention's comprehensive utilization and combination electric cleaner and bag dust collector: bag dust collector is after ignition of the boiler normal operation input, flue-gas temperature, humidity are normal, bag dust collector subregion puts into operation, utilize effective filter to carry out intensive filtration, to meet fume emission requirement up to standard, have dust removing effects stable, concentration of emission is low, the feature of excellent performance;
the oil smoke that electric precipitation subregion produces while being mainly used in trapping ignition of the boiler; when boiler occurs to economize coal gas, reheater, superheater, water-cooling wall four-tube leakage or booster; also can be switched to electric precipitation subregion; the situation of having avoided the oil smoke of high temperature, high humidity and 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; during the work of electric precipitation subregion, can collect flue dust, reduce atmosphere pollution.
Accompanying drawing explanation
the front view that accompanying drawing 1 is the present embodiment;
the top view that accompanying drawing 2 is the present embodiment;
the left view that accompanying drawing 3 is the present embodiment;
accompanying drawing 4 is A-A cutaway view in accompanying drawing 1;
accompanying drawing 5 is B-B cutaway view in accompanying drawing 1.
wherein: 1, bag dedusting air inlet valve; 2, air intake house steward; 3, bag dedusting air flow guiding plate; 4, casing in bag dedusting; 5, electric precipitation air inlet 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 electric precipitation air inlet valve; 13, bag dedusting upper box discharge pipe; 14, deduster air intake four-way pipe; 15, air-out house steward; 16, airduct after electric precipitation air inlet valve; 17, bag dedusting filter; 18, bag dedusting blast pipe.
The specific embodiment
below in conjunction with drawings and Examples, the invention will be further described:
the combined shunting deduster of electricity after a kind of front bag as shown in the figure, blast pipe and the discharge pipe that comprise dust-removing box, is connected with dust-removing box and the ash bucket that is connected to dust-removing box bottom.Specifically:
dust-removing box comprises a bag dust-removing box, electric precipitation casing 10, wherein: bag dust-removing box comprises casing 4 in a bag dedusting upper box 6, bag dedusting, the bag dedusting upper box 6 interior marsupial removing dust and clearing ash blowing devices 7 that arrange, the interior marsupial dedusting filter 17 that arranges of casing 4 in bag dedusting.The interior well-equipped electric dust collector of electric precipitation casing 10.
blast pipe comprises: the bag dedusting blast pipe 18 being connected with bag dust-removing box, the electric precipitation blast pipe being connected with electric precipitation casing 10, in the present embodiment: blast pipe adopts deduster air intake four-way pipe 14, 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 form bag dedusting air intake parts; Air intake house steward 2, electric precipitation air intake form electric precipitation air intake part.
bag dedusting blast pipe 18 front ends arrange marsupial dedusting air inlet valve 1, and electric precipitation blast pipe is provided with electric precipitation air inlet valve 5, and bag dedusting air inlet valve 1 is multiple-blade sealed butterfly valve, and electric precipitation air inlet valve 5 is pressure type leakage less leakage valve.Bag dedusting air inlet valve 1 is arranged on a bag arrival end for dedusting blast pipe 18; Electric precipitation air inlet valve 5 is arranged on electric precipitation blast pipe stage casing, and electric precipitation blast pipe is divided into airduct 16 after airduct 12 before electric precipitation air inlet valve, electric precipitation air inlet valve, after electric precipitation air inlet valve, airduct 16 is connected to electric precipitation casing 10 from bag dedusting upper box 6 inside are passed, and two bag dedusting blast pipes 18 are arranged on the advance both sides of airduct 12 of electric precipitation air inlet valve.
in addition, at the interior marsupial dedusting air flow guiding plate 3 that arranges of bag dedusting blast pipe 18, between electric precipitation blast pipe 5 and electric precipitation casing 10, be connected with electric precipitation air intake mozzle 8, in electric precipitation air intake mozzle 8, be provided with electric precipitation airflow-distribution board 9, after electric precipitation air inlet valve, airduct 16 is connected with electric precipitation air intake mozzle 8 from bag dedusting upper box 6 inside are passed.
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 is directly used air-out house steward 15.
the concrete operation principle of setting forth lower the present embodiment below:
come from the combined shunting deduster blast pipe of flue gas electricity after flue enters into front bag of boiler:
after boiler is shut down, again during ignition trigger, now a bag dust-removing box does not move, and closes two bag dedusting air inlet valves 1 of bag dust-removing box, opens electric precipitation air inlet valve 5, and electric precipitation casing 10 puts into operation, the oil smoke producing during trapping igniting.Flue gas enters into electric precipitation casing 10 after electric precipitation airflow-distribution board 9 distributes, in electric precipitation subregion electric field, be provided with polar curve and pole plate, dust in flue gas is by the passage with DC high voltage electric field, dust is by charged, dust with negative electrical charge tends to pole plate under the effect of electric field force, and adsorbing powder dust is on pole plate and discharge electric charge; By mechanical vibrator mechanism, pole plate is carried out to vibration dust-cleaning, the dust being gathered on pole plate is just shaken and is fallen in ash bucket;
after ignition of the boiler normal operation input, two bag dedusting air inlet valves 1 of opened pocket dust-removing box, bag dust-removing box puts into operation, now electric precipitation casing 10 does not move, close electric precipitation air inlet valve 5, boiler smoke enters a bag dedusting blast pipe 18, and bag dedusting blast pipe 18 inside arrange marsupial dedusting air flow guiding plate 3, have effectively avoided big dust particle washing away filter bag under inertia force effect; Flue gas stream enters casing 4 filter bag bins in bag dedusting after bag dedusting air flow guiding plate 3, flue gas stream evenly rises in filter bag bin, flue dust is through bag dedusting filter 17, and the clean gas after filtration enters air-out house steward 15 by bag dedusting upper box discharge pipe 13 and bag dedusting discharge pipe 11.
after front bag of the present invention, the combined shunting deduster of electricity can be transformed by electric cleaner.Wherein: former electric cleaner is single chamber three electric field structures, at this, retain the 3rd electric field, utilized the shell of original electric cleaner, retain ash bucket parts, and transform accordingly, removing after the devices such as the polar curve of 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, filter bag ash removal blowing device is set, set up bag dust removal part.
the present embodiment is divided into two subregions, and one is to be electric precipitation subregion, and another is a bag dedusting subregion.Between two subregion dedusting methods, taked again special drainage, part flow arrangement, made two regions separately.Boiler smoke when bag dedusting subregion is collected normal operation, utilizes effective filter to carry out intensive filtration, to meet fume emission requirement up to standard; The oil smoke that electric precipitation subregion produces while being mainly used in trapping ignition of the boiler; Meanwhile, in normal operation, when temporary derangement occurs for either party in two dedusting subregions, can be switched to another subregion, there is stronger mutual compensating.Deduster, when boiler frequent shutdown, frequent starting, can be devoted oneself to work by the electric precipitation subregion of deduster, has avoided conventional bag dust collector now to need directly to enter through by-pass flue the situation of atmosphere, has reduced greatly the in line pollution to atmosphere.
after front bag of the present invention, the combined shunting deduster of electricity is specially adapted to Retrofit on electrostatic precipitator project, after front bag, the combined shunting deduster of electricity combines electric cleaner and sack cleaner advantage separately effectively, bag dust collector and electric cleaner partition running, mutually switch, give full play to the feature of electric cleaner and sack cleaner, to meet the working condition requirement of boiler frequent shutdown, frequent starting, infringement to filter bag in the time of can also effectively protecting due to boiler booster simultaneously, owing to there being the existence of electric cleaner subregion, when coal gas occurs to economize boiler, reheater, superheater, when water-cooling wall four-tube leakage or booster, air intake valve before bag dedusting subregion can be closed in time according to control signal, avoid the direct impact of steam to filter bag in air-flow, now air-flow is switched to electric cleaner subregion, electric cleaner subregion can be at high temperature, under the flue gas condition of high humidity, carry out dedusting work, and remove the flue dust in flue gas, both guaranteed the safety of filter bag, met again the requirement of environmental protection.
above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the combined shunting deduster of electricity after bag before a kind, blast pipe and the discharge pipe that comprises dust-removing box, be connected with described dust-removing box and be connected to the ash bucket of described dust-removing box bottom, 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 being connected with described bag dust-removing box, the electric precipitation blast pipe being connected with described electric precipitation casing, described bag dedusting blast pipe arranges marsupial dedusting air inlet valve, and described electric precipitation blast pipe is provided with electric precipitation air inlet valve; Described discharge pipe is connected with described bag dust-removing box, electric precipitation casing simultaneously; Described blast pipe is four-way pipe, and described four-way pipe comprises the electric precipitation blast pipe described in bag dedusting blast pipe described in an air intake house steward, two,, and described air intake house steward is connected with described bag dedusting blast pipe, electric precipitation blast pipe; Described bag dust-removing box comprises casing in a bag dedusting upper box, bag dedusting, in described bag dedusting upper box, marsupial removing dust and clearing ash blowing device is set, and in described bag dedusting, in casing, marsupial dedusting filter is set; 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; Described electric precipitation blast pipe is connected to described electric precipitation casing from described bag dedusting upper box inside is passed.
2. the combined shunting deduster of electricity after front bag according to claim 1, is characterized in that: described bag dedusting air inlet valve is multiple-blade sealed butterfly valve.
3. the combined shunting deduster of electricity after front bag according to claim 1, is characterized in that: described electric precipitation air inlet valve is that pressure type leakage less leaks valve.
4. the combined shunting deduster of electricity after front bag according to claim 1, it is characterized in that: between described electric precipitation blast pipe and electric precipitation casing, be connected with electric precipitation air intake mozzle, in described electric precipitation air intake mozzle, be provided with electric precipitation airflow-distribution board.
5. the combined shunting deduster of electricity after front bag according to claim 1, is characterized in that: in 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 CN102430313A (en) | 2012-05-02 |
| CN102430313B true 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
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- 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 |
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| CN102430313A (en) | 2012-05-02 |
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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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