CN110388651A - Boiler exhaust gas bridge type bypasses fine filtering device - Google Patents
Boiler exhaust gas bridge type bypasses fine filtering device Download PDFInfo
- Publication number
- CN110388651A CN110388651A CN201910647780.1A CN201910647780A CN110388651A CN 110388651 A CN110388651 A CN 110388651A CN 201910647780 A CN201910647780 A CN 201910647780A CN 110388651 A CN110388651 A CN 110388651A
- Authority
- CN
- China
- Prior art keywords
- main
- exhaust gas
- fine filtering
- filtering device
- bypasses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of boiler exhaust gas bridge types to bypass fine filtering device, including the main smoke exhaust pipe being connected between deduster and chimney, it is characterized in that extraction-type main stem smoke filtration net is arranged in the main smoke exhaust pipe, an and gap bridge by-pass flue in parallel by main smokejack, it is equipped with accessory fan in the gap bridge by-pass flue and extraction-type bypasses filter screen.While loading filter screen to main smokejack; pass through the design of gap bridge by-pass flue; both original exhaust air rate had been ensure that; the harmful substances such as the remaining trace sulfur dioxide passed through after main deduster is equipped are effectively intercepted; the purpose for not shutting down replacement filter screen may be implemented again, and cost is significantly less than stopping and overhauls main cleaner or using cost caused by other load fine filtering devices.
Description
Technical field
The present invention relates to boiler exhaust gas purification techniques, especially a kind of boiler exhaust gas bridge type bypasses fine filtering device.
Background technique
The environmental requirement of thermal power plant boiler smoke evacuation exhaust is very strict, conventional use of at present mainly to configure various dedustings
Equipment, guarantees emission matching standard requirement by various technological means.If patent publication No. is disclosed in CN108731014A
A kind of boiler smoke dust pelletizing system, including service sink, remove dirt barrel, smoke exhaust pipe and circulation pipe, except dirt barrel bottom is fixed with trunnion axis,
Turbine, the concave surface of smoke exhaust pipe gas outlet face turbo blade are rotatably connected on trunnion axis；Removing in dirt barrel successively above turbine
Multiple filter layers are connected with, filter layer includes filtering table and steel ball, and filtering pan bottom and top offer filter hole, filtering table
With except elastic component is fixedly connected between dirt barrel, pull rod is hinged between adjacent head disk；The distal end of turbo blade is fixed with magnetic
Property block, filtering pan bottom be equipped with the first magnet and the second magnet, the first magnet and the second magnet are about filtering table central symmetry, magnetic
Property block and the first magnet close to when it is attracting, magnetic block and the second magnet close to when repel each other.This device purpose is to solve flue gas
In impurity be deposited in filter layer bottom close to smoke exhaust pipe side, the problem of so as to cause the reduction of fume treatment efficiency.For another example specially
A kind of boiler dust removal device that sharp Publication No. CN108499293A is provided, shell is interior to be equipped with dirt pocket and desulfurization chamber, dirt pocket
Blast pipe is equipped with above left side, dirt pocket is equipped with two layers of filter screen, is connected at the top of filter screen and dirt pocket, setting below dirt pocket
Dust accumulation room, is arranged communicating pipe on the right side of dirt pocket, and desulfurization chamber bottom is arranged reaction tank, communicating pipe both ends respectively with dirt pocket outlet and
Reaction tank is connected, and spray head is equipped on the right side of desulfurization chamber, is equipped with discharge pipe at the top of desulfurization chamber.Filtering ponds, mistake are set on the outside of desulfurization chamber
Filter tank bottom connects reaction tank by pipeline, connects water circulating pump above filtering ponds, water circulating pump is connected with spray head.This device
Purpose is in the circulation for completing water by filter device and water circulating pump.
And in real operating condition, numerous cleaners, especially uninterruptedly after using for a longer period, dust removing effects often have
Declined, be especially in the equipment of qualified discharge limit data, keeps enterprise very helpless, stop production to overhaul, replacement large scale equipment
Enterprises' loss will be made very big.
Summary of the invention
The purpose of invention is to solve the above-mentioned problems, to provide a kind of boiler exhaust gas bridge type bypass fine filtering device, it has
There is small investment, removes the obvious feature of tail dirt effect.
The above-mentioned technical problem of invention is mainly to be addressed by following technical proposals: a kind of boiler exhaust gas bridge type
Fine filtering device is bypassed, including the main smoke exhaust pipe being connected between deduster and chimney, it is characterized in that in the main smoke exhaust pipe
Extraction-type main stem smoke filtration net is set, and a gap bridge by-pass flue in parallel by main smokejack, in the gap bridge by-pass flue
Filter screen is bypassed equipped with accessory fan and extraction-type.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, the main stem smoke filtration net is in main row
Independent two stations are equipped in smoke pipe in parallel；It bypasses filter screen and is equipped with independent two works in parallel in gap bridge by-pass flue
Position.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, the main stem smoke filtration net is by silk
Permeability type mesh-plate structure made of silk shell fabric.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, the bypass filter screen is by silk face
Permeability type mesh-plate structure made of expecting.
In boiler exhaust gas bridge type above-mentioned bypass fine filtering device, preferably, the gap bridge by-pass flue is into and out of mouth
Position is equipped with valve, and the smoke outlet of gap bridge by-pass flue is located at before cigarette fontanel sample point.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, being equipped with lifting above the main smoke exhaust pipe
Device, main smoke exhaust pipe top are equipped with main stem smoke filtration net extraction opening.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, being extracted with the main stem smoke filtration net
Mouth cooperation is equipped with movable capping.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, being set on gap bridge by-pass flue bottom surface
There is bypass filter screen extraction opening, is equipped with movable capping with extraction opening cooperation.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, the silk fabrics measurement unit >=6 nurses
Rice.
In boiler exhaust gas bridge type bypass fine filtering device above-mentioned, preferably, the two sides of the permeability type mesh-plate structure
Equipped with isolation plugboard trough.
The technical program is located in research object on the main smoke discharging pipe between main air blower deduster and cigarette fontanel, in main row
One kind is arranged in smoke pipe can replace flexible removable main stem smoke filtration net at any time, a gap bridge in parallel beside main smokejack
There is independent accessory fan and main smoke exhaust pipe to be equally disposed with flexible removable bypass for by-pass flue, gap bridge by-pass flue
Filter screen forms a refined filtration system in parallel.Within the system, main stem smoke filtration net has in main smoke exhaust pipe there are two work
Position, bypassing filter screen, equally there are two stations for tool in gap bridge by-pass flue.Due to arranging main stem smoke filtration net, then main row
Smoke pipe due to filter screen presence and increase ventilation resistance, at this point, the setting of gap bridge by-pass flue, which not only plays, overcomes main row
The defect of smoke pipe resistance acts on, while being also responsible for carrying out refined filtration to discharged flue gas.The arrangement of double-station is not, it can be achieved that shutting down
In the case where replace filter screen in turn.
Further, a kind of permeability type web plate knot is made using common inexpensive silk fabrics in the filter screen in the present apparatus
Structure is convenient for changing, also reusable after cleaning, can be to sulfur dioxide, dioxin, the peroxide etc. in addition to carbon monoxide
A variety of dust carry out final filtration.
Valve can also be arranged into and out of mouth position in gap bridge by-pass flue in this programme, accord with completely in main air blower deduster
In the case where closing emission request, gap bridge by-pass flue is closed, or maintenance is carried out to gap bridge by-pass flue.
Further, work on the spot environment is equipped to meet most of steam power plant's dedustings, be arranged above main smoke exhaust pipe
Device for hoisting, such as arrangement minitype travelling crane, to avoid pure manual work, the extraction opening of this extraction-type smoke filtration net is arranged in
At the top of main smoke exhaust pipe, when not using filter screen, extraction opening is closed using movable capping.The filter screen of gap bridge by-pass flue is taken out
It takes mouth to be arranged on flue bottom surface, can directly take out from below, facilitate operation, extraction opening is covered with same configuration activities formula.On
Lower two kinds of extraction modes have substantially no effect on the various facility spaces in scene.
Especially, this programme has carried out preferably silk fabrics measurement unit, using the gas permeability material for being more than or equal to 6 mommes
Material carries out final filtration to discharged flue gas.Furthermore permeability type web plate self structure also has isolation plugboard trough, when not in use
Closing further takes out entire filter screen, guarantee is adsorbed on online substance and is grasping when changeing in two sides isolation plate insertion groove
It is not scattered in flue during making.
Compared with prior art, advantageous effect of the invention is: while loading filter screen to main smokejack, passing through gap bridge
The design of by-pass flue had both guaranteed or had slightly increased original exhaust air rate, to the residue micro two after main deduster equipment
The harmful substances such as sulfur oxide are effectively intercepted, and the purpose for not shutting down replacement filter screen may be implemented, and cost is significantly low
Main cleaner is overhauled in stopping or using cost caused by other load fine filtering devices.
Detailed description of the invention
Fig. 1 is a kind of application arragement construction schematic diagram of invention.
Fig. 2 is the main smoke exhaust pipe of Fig. 1, gap bridge by-pass flue position top view.
Fig. 3 is a kind of smoke filtration net dismounting schematic diagram of invention.
Fig. 4, Fig. 5 are a kind of smoke filtration web frame schematic diagrames of the invention.
In figure: 1. dedusters, 2. main smoke exhaust pipes, 21. first main stem smoke filtration nets, 211. isolation plates, 212. grids,
213. anti-scattered slots, 22. second main stem smoke filtration nets, 3. gap bridge by-pass flues, 31. first gap bridge by-pass flues, 32. second mistakes
Bridge by-pass flue, 4. chimneys, 5. sample points, 6. boom hoistings.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solution to invention is described in further detail.
Referring to Fig. 1 to Fig. 3, a kind of boiler exhaust gas bridge type of the present embodiment bypasses fine filtering device, is connected to dedusting with original
Premised on main smoke exhaust pipe 2 between device 1 and chimney 4, undergo technological transformation to it.
The extraction-type main stem smoke filtration net of two independent stations, i.e. the first main stem cigarette are set first in main smoke exhaust pipe 2
Gas filter screen 21 and the second main stem smoke filtration net 22 are passed a bridge then in main 2 side of a smokejack gap bridge by-pass flue 3 in parallel
The smoke inlet of by-pass flue 3 is located at before the second main stem smoke filtration net 22, and smoke outlet is located at the first main stem smoke filtration net 21
Later and before cigarette fontanel sample point 5.
Accessory fan 31 alone is equipped in gap bridge by-pass flue 3, reference machine can be selected in accessory fan 31, according to practical machine
Type selects total pressure range, arranges that the extraction-type of double independent stations bypasses filter screen before accessory fan 31, i.e., the first gap bridge is other
Smoke uptake 31 and the second gap bridge by-pass flue 32.
Illustrate that the specific structure of filter screen, bypass filter screen structure are same by taking main stem smoke filtration net as an example below.
Main stem smoke filtration net is the permeability type mesh-plate structure made of silk fabrics, i.e., it is single that metering is laid in a rectangular frame
Position is the silk fabrics of 7 mommes as grid 212, as shown in Figure 4, Figure 5, is set respectively in the two sides of rectangular frame thickness direction
There is isolation plugboard trough, wherein rectangular frame bottom position has upward flange as anti-scattered slot 213, matches with plugboard trough is isolated
Conjunction prepares isolation plate 211.Note: isolation 211 insert port position of plate is using the soft sealing strip being mutually close to, to guarantee do not having
Socket position is voluntarily closed when having inserting isolation plate 211.
Take extraction-type filter net mode, in general, main 2 bore of smoke exhaust pipe is larger, 3 bore of gap bridge by-pass flue compared with
Small, main stem smoke filtration net weight is also relatively heavy, so boom hoisting 6 is set above main smoke exhaust pipe 2 when practical application,
As therefore small driving is equipped with main stem smoke filtration net extraction opening, and prepare and main stem smoke filtration on main 2 top surface of smoke exhaust pipe
The movable capping of net extraction opening cooperation.And lighter bypass filter screen is in use, can be on 3 bottom surface of gap bridge by-pass flue
Setting bypass filter screen extraction opening, matches with extraction opening and is again provided with movable capping.
In use, taking out the first main stem smoke filtration net 21 and second if the index of sample point 5 meets discharge standard
Main stem smoke filtration net 22 closes gap bridge by-pass flue 3, routinely workflow operation.
If 5 index of sample point has micro- super discharge standard, flue dust is allowed to arrange as built power plant boiler highest by the IIIth period
Put concentration requirement, the power plant boiler in the above town planning area in county and county, smoke dust discharge concentration >=200mg/m3When, it loads onto
First main stem smoke filtration net 21 or the second main stem smoke filtration net 22 open gap bridge by-pass flue 3, in gap bridge by-pass flue 3
In equally insert a progress refined filtration in the first gap bridge by-pass flue 31 or the second gap bridge by-pass flue 32, the filtering not used
Net extraction opening is closed using movable capping.In use for some time, numerical value is discharged according to sample point 5 and determines replacement filtering
Net when replacing filter screen, is first inserted into two piecemeals isolation plate 211 in the isolation plugboard trough of screen pack, 212 (silk of grid
Silk shell fabric) it is clipped in wherein, then extract entire filter plate out, then buckle movable capping.
Further, in practical application, enterprise can also make full use of main smoke exhaust pipe 2 and mistake according to itself concrete condition
The means such as frequency control, the adjusting air valve of two independent stations and accessory fan 31 in bridge by-pass flue, obtain level-one or
Multistage refined filtration purpose.
Above-described embodiment is not intended to limit the invention to the explanation of invention, if gap bridge by-pass flue is into and out of mouth position
Equipped with valve, horizontal extraction-type filter screen mounting means and filter screen silk fabrics are used under the enabled condition of space at the scene
Measurement unit uses, etc. less than the multilayer of 6 mommes, and the structure etc. after the simple transformation of any pair of invention belongs to the guarantor of invention
Protect range.
Claims (10)
1. a kind of boiler exhaust gas bridge type bypasses fine filtering device, including the main smoke evacuation being connected between deduster (1) and chimney (4)
It manages (2), it is characterized in that extraction-type main stem smoke filtration net is arranged in the main smoke exhaust pipe (2), and other in main smokejack (2)
An in parallel gap bridge by-pass flue (3) is equipped with accessory fan (31) and extraction-type bypass filtering in the gap bridge by-pass flue
Net.
2. boiler exhaust gas bridge type according to claim 1 bypasses fine filtering device, which is characterized in that the main stem flue gas mistake
Strainer is equipped with independent two stations in parallel in main smoke exhaust pipe (2)；Bypass filter screen is set in parallel in gap bridge by-pass flue (3)
There are independent two stations.
3. boiler exhaust gas bridge type according to claim 1 bypasses fine filtering device, characterized in that the main stem smoke filtration
Net is the permeability type mesh-plate structure made of silk fabrics.
4. boiler exhaust gas bridge type according to claim 1 bypasses fine filtering device, characterized in that the bypass filter screen is
The permeability type mesh-plate structure made of silk fabrics.
5. boiler exhaust gas bridge type according to claim 1 or 2 or 3 or 4 bypasses fine filtering device, which is characterized in that described
Gap bridge by-pass flue (3) into and out of mouth position be equipped with valve, the smoke outlet of gap bridge by-pass flue be located at cigarette fontanel sample point (5) it
Before.
6. boiler exhaust gas bridge type according to claim 1 or 2 or 3 bypasses fine filtering device, characterized in that the main smoke evacuation
It manages and is equipped with boom hoisting above (2), be equipped with main stem smoke filtration net extraction opening at the top of main smoke exhaust pipe.
7. boiler exhaust gas bridge type according to claim 6 bypasses fine filtering device, which is characterized in that with the main stem flue gas
The cooperation of filter screen extraction opening is equipped with movable capping.
8. boiler exhaust gas bridge type according to claim 1 or 2 or 4 bypasses fine filtering device, characterized in that by the gap bridge
Smoke uptake (3) bottom surface is equipped with bypass filter screen extraction opening, is equipped with movable capping with extraction opening cooperation.
9. boiler exhaust gas bridge type according to claim 3 or 4 bypasses fine filtering device, characterized in that the filtering twine
Silk shell fabric measurement unit >=6 mommes.
10. boiler exhaust gas bridge type according to claim 1 or 2 or 3 or 4 bypasses fine filtering device, which is characterized in that described
The two sides of permeability type mesh-plate structure are equipped with isolation plugboard trough, have isolation plate (211) with plugboard trough cooperation is isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910647780.1A CN110388651A (en) | 2019-07-18 | 2019-07-18 | Boiler exhaust gas bridge type bypasses fine filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910647780.1A CN110388651A (en) | 2019-07-18 | 2019-07-18 | Boiler exhaust gas bridge type bypasses fine filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388651A true CN110388651A (en) | 2019-10-29 |
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ID=68285169
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910647780.1A Pending CN110388651A (en) | 2019-07-18 | 2019-07-18 | Boiler exhaust gas bridge type bypasses fine filtering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623672A (en) * | 2021-06-24 | 2021-11-09 | 有能集团江苏威同电气设备有限公司 | Built-in smoke and air isolation system of plug board isolation door |
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| CN202740931U (en) * | 2012-08-29 | 2013-02-20 | 南京交通职业技术学院 | Air purifier filtering insertion plate capable of being filled with two filling materials |
| CN203196488U (en) * | 2013-03-30 | 2013-09-18 | 励茂华 | Two-channel filter screen dedusting device |
| CN105757699A (en) * | 2013-01-07 | 2016-07-13 | 宋朋泽 | Dust removal purifying system and method for flue gas |
| CN106766958A (en) * | 2016-12-27 | 2017-05-31 | 鞍钢集团工程技术有限公司 | For the bypass heat circulating system and application method of industrial furnace waste heat recovery |
| KR20180073094A (en) * | 2016-12-22 | 2018-07-02 | 이향호 | Smoke Exhaust Device with multiple filters |
-
2019
- 2019-07-18 CN CN201910647780.1A patent/CN110388651A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963549Y (en) * | 2006-10-24 | 2007-10-24 | 胡杭虎 | Automatic pipeline filter for belt type pressure filter |
| CN202740931U (en) * | 2012-08-29 | 2013-02-20 | 南京交通职业技术学院 | Air purifier filtering insertion plate capable of being filled with two filling materials |
| CN105757699A (en) * | 2013-01-07 | 2016-07-13 | 宋朋泽 | Dust removal purifying system and method for flue gas |
| CN203196488U (en) * | 2013-03-30 | 2013-09-18 | 励茂华 | Two-channel filter screen dedusting device |
| KR20180073094A (en) * | 2016-12-22 | 2018-07-02 | 이향호 | Smoke Exhaust Device with multiple filters |
| CN106766958A (en) * | 2016-12-27 | 2017-05-31 | 鞍钢集团工程技术有限公司 | For the bypass heat circulating system and application method of industrial furnace waste heat recovery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623672A (en) * | 2021-06-24 | 2021-11-09 | 有能集团江苏威同电气设备有限公司 | Built-in smoke and air isolation system of plug board isolation door |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191029 |