CN2717510Y - Straight-through guide bag-type dust collector - Google Patents
Straight-through guide bag-type dust collector Download PDFInfo
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- CN2717510Y CN2717510Y CN 200420076339 CN200420076339U CN2717510Y CN 2717510 Y CN2717510 Y CN 2717510Y CN 200420076339 CN200420076339 CN 200420076339 CN 200420076339 U CN200420076339 U CN 200420076339U CN 2717510 Y CN2717510 Y CN 2717510Y
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Abstract
The utility model discloses a bag-type dust collector, in particular to a large-scale bag-type collector used for the cleaning of large quantity of ash-laden gas in environmental protecting field, comprising an air inlet 1, an inlet horn 2, a dust collector casing 3, an air outlet 4, a filter bag and bag cage 8, a shaving board 9, an ash cleaner 10, an exhausting chamber 11 and an ash bucket 12. A splitter 5 is arranged in the air inlet 1. An air flow distributing element 6 is arranged in the inlet horn 2. A separator plate 7 is arranged in the inner space of the dust collector. The ash cleaner 10 is arranged in the exhaust chamber 11. The bag-type collector structure suggested by the utility model can lead dust-laden gas enter the space of the filter bag horizontally and flow out of the dust collector horizontally after filtered. The straight-in and straight-out entering exhaustion flow type, namely straight-way type, has the advantages of short flow path and smooth and gentle flow, which is helpful for reducing the structural drag and running resistance of the bag-type collector and reducing flow energy consumption of gas.
Description
One, affiliated technical field
The utility model relates to a kind of sack cleaner, particularly is used for a kind of large-scale sack cleaner that big air quantity ash-laden gas purifies in the environmental protection field.
Two, background technology
Sack cleaner is that the filter bag that utilizes filter cloth to be made into filters dusty gas, and a kind of cleaner that solid particle is separated from gas is very extensive in industrial application.The deduster of relative other type, the advantage of bag-type dusting is the efficiency of dust collection height, particularly can effectively capture minuteness particle in the flue dust (particles of＜10 μ m), but its shortcoming is that equipment operation resistance is big than power, generally be in 1200～1800Pa scope and do not wait, sometimes even surpass more than the 2000Pa, the running resistance height means gas flow energy consumption height, therefore, how to reduce the sack cleaner running resistance and become the difficult problem that domestic and international professional and technical personnel faces jointly.
Even sack cleaner also can be divided into multiple pattern by different purge modes, but no matter be the sort of mode, their running resistance can be decomposed into two parts, the one, and the filtration resistance of dust-contained airflow when filter bag filters.The filtration resistance size depends on the selection of people to the rate of filtration, filtrate, purge mode etc., with the deduster structure-irrelevant; The structural drag size then depends on deduster version, and promptly the structural drag size that caused of deduster structure difference is also different.The large-scale sack cleaner of tradition is at deduster outer setting outlet and inlet set smoke box, divides a plurality of branch roads to carry dusty gas, this traditional approach complex structure, structural drag height to different filter bag zones respectively then on smoke box again.The large-scale sack cleaner running resistance of this kind tradition is generally in 1200～1800Pa scope, and wherein structural drag is generally in 400～500Pa scope.
Three, summary of the invention
For overcoming the structurally ubiquitous running resistance height of present large-scale sack cleaner, the shortcoming that the gas flow energy consumption is big the utility model proposes a kind of new sack cleaner structural shape, and promptly air-flow directly advances the straight-through flow-guiding type sack cleaner that directly goes out.
The straight-through flow-guiding type sack cleaner that the utility model proposes mainly is applicable to big air quantity (＞40000m
3/ h) dusty gas purifies, and is a kind of large-scale sack cleaner.Purification as power plant boiler flue gas, large scale industry stove flue gas etc.
According to hydrodynamics knowledge, it is smooth and easy to flow during gas flow, gently, flow process is short, fluid is not crooked as far as possible, it is the primary condition that reduces flow resistance that turbulent flow etc. does not take place, also be the basic ideas of sack cleaner structure innovation of the present invention, according to this thinking, as long as dusty gas enters sack cleaner from the air inlet level, after the filtration again level discharge from the deduster air outlet, so, it is this that directly to advance the air draft mode of advancing that directly goes out be exactly the simplest and the most direct a kind of flow problem undoubtedly, be called for short through type, therefore, the main points of the present invention's innovation are exactly the feature that the sack cleaner structure must have through type.
But straight-through structure can bring new technical problem again, and promptly the filter bag at air inlet position can be subjected to washing away of dust-contained airflow, causes filter bag damage, and particularly under the situation of big air quantity, this problem is particularly outstanding.For avoiding this phenomenon to take place, deflector and airflow distribution device must structurally be set, its function mainly is to organize and lead air-flow to enter the filter bag space from a plurality of passages, avoid concentrated air intake from the air inlet position, the ventilation speed of control filter bag, thus avoid filter bag not washed away at a high speed and gall.Therefore, the main points of another innovation of the present invention are exactly the function that the sack cleaner structure must have water conservancy diversion.
According to above-mentioned two kinds of basic ideas, technical solution of the present utility model is:
Propose a kind of straight-through flow-guiding type sack cleaner, form by air inlet, import loudspeaker, deduster shell, air outlet, deflector, airflow-distribution board, dividing plate, filter bag and bag cage, card, deashing device, exhaust chamber, ash bucket.Deflector is installed in the air inlet, and the air-flow distributed component is installed in the import loudspeaker, and dividing plate is separated into two parts with the sack cleaner inner space, and filter bag is installed on the card, and deashing device is installed in the exhaust chamber.
After dusty gas Q enters sack cleaner from air inlet 1 level, be split into three parts (being Q1+Q2+Q3) and filter to the filter bag space from different channel flows respectively.The filter bag space is divided into three zones, i.e. I district, II district, III district.After passing the air-flow distributed component, the gas of Q1 part directly enters I district, filter bag space; The gas of Q2 part under the guide functions of deflector, from air inlet, import loudspeaker, through deduster housing and the formed in-channel water advection of dividing plate to II district, filter bag space and III district; The gas of Q3 part flows to filter bag space II and III district from the lower horizontal of air-flow distributed component bottom and filter bag space I.Dusty gas is pooled to exhaust chamber after filter bag filters, level flows backward again, finally discharges from air outlet.When filtering dusty gas, filter bag can form dust layer (filter cake) on its surface, continuity along with the time, dust layer is more and more thicker, filtration resistance is increasing, and when reaching the resistance of setting, deduster self control system is sent instruction, deashing device is started working, by stages and in groups filter bag is carried out deashing, dust layer comes off from the filter bag surface, is deposited in the ash bucket.During the deduster operation, filter with the deashing state and hocketing all the time.
The effect of deflector be organize and lead a part of gas (Q2) in the outer passage horizontal flow to filter bag space II, III district.Deflector can rotate, different gas flow (Q2) sizes of distributing of the anglec of rotation are also different, by flow rate test, when Q2 reaches desired share, the anglec of rotation (position of rotation of deflector) is just decided, and final welding or other fixture of adopting fixed deflector.For the air quantity that makes things convenient for deflector distributes and the adjusting operation, hinged pattern is adopted in the rotation of deflector, as forms such as loose-leaf, axle sleeves.
The effect of dividing plate is a passage that forms in order to carry gas (Q2), gas (Q2) in passage by horizontal flow behind the forward direction to filter bag II, III district.Dividing plate is a kind of polygon-shaped, is trapezoidal at import loudspeaker position, is stairstepping in II, III zone, and dividing plate can be located at a side of deduster inner space, also can be provided with simultaneously in both sides.
The effect that the air-flow distributed component is set is the throughput that stops with adjustments of gas Q1, is a kind of choked flow element, and it can be different structures such as porous plate, shutter, silk screen, according to the choked flow situation some numbers of plies can be set.Common practices is according to the upstream gas flow regime, tests to determine structural shape, the number of plies, installation site, percent opening of choked flow element etc. by modelling.
The total flow that enters the dusty gas of sack cleaner is Q, can control the air quantity size of gas Q2 by the regulating action of deflector, can control the air quantity size of gas Q1 by the setting of air-flow distributed component, remaining gas Q3 just flows to the filter bag space in II, III district naturally from the lower horizontal of the bottom of gas distribution elements and I district filter bag.
The effect of deashing device is that filter bag is carried out deashing, and it is a part of sack cleaner, is not innovative content of the present utility model.The deashing device that the utility model relates to can adopt different dust cleaning forms and mode, as tubular type winding-up, rotary blowing, reverse gas cleaning, sound wave ashing, vibration dust-cleaning or the like.
The exhaust chamber structure is the cabin form, and dividing plate is not established in inside, and afterbody has exhaust outlet, its effect shows two aspects, the one, and after purifying, dusty gas compiles the space, and the 2nd, as the exhaust passage, kill two birds with one stone, structurally changed the way that traditional sack cleaner is established the exhaust passage in addition.
The beneficial effect of technical solutions of the utility model is:
1. the sack cleaner structure that the utility model proposes, can make the dusty gas level enter the filter bag space, after the filtration again level flow out deduster, thisly directly advance the discharge air flow flowing mode (through type) that advances that directly goes out and show short, smooth and easy, the mild characteristics that flow of flow process, this is the feature that traditional large-scale sack cleaner does not have.To reducing sack cleaner structural drag and running resistance, reduce the gas flow energy consumption and be highly profitable.
2. the sack cleaner that the utility model proposes has water conservancy diversion and shunting function and characteristics, the dusty gas that enters sack cleaner can be shunted the sector-style amount of going forward side by side by deflector and distribute adjusting, the leader air-flow is walked lateral access, and this is the feature that traditional sack cleaner does not have.Its importance is to avoid dusty gas to concentrate to pass between the filter bag at import position, prevents from that filter bag from washing away because of the high speed of dust-contained airflow to wear and tear, and ensures the long-life of filter bag.
3. the sack cleaner that the utility model proposes, its inside have a gas passage, be used for the dusty gas shunted in passage in the past backward horizontal flow filter to the filter bag space of afterbody, this is the architectural feature that traditional large-scale sack cleaner does not have.This architectural feature superiority shows: the part dusty gas can be carried to the filter bag zone of middle part and afterbody, structure is simple again, and flow resistance is low, implements easily, only needs in the deduster inner space dividing plate to be set and gets final product.
4. the sack cleaner that the utility model proposes has function and the characteristics that air-flow distributes, and this is the 26S Proteasome Structure and Function feature that traditional large-scale sack cleaner does not have.Choked flow effect by the air-flow distributed component, controllable flow avoids filter bag damaged because of dust-contained airflow washes away at a high speed to the facing the wind speed and the dusty gas air quantity of deduster import position filter bag, ensures life-span of the filter bag, in addition, the air-flow distributed component also has the effect of the flow uniformity of raising.
5. the sack cleaner that the utility model proposed does not have special exhaust passage, exhaust chamber purifies the gas effect of back except that having to compile, the function that also has horizontal exhaust passage, this exhaust mode is simple in structure, the gas flow resistance is low, and this is the architectural feature that traditional large-scale sack cleaner does not have.
6. the sack cleaner structure that the utility model proposed and traditional sack cleaner compare, and running resistance is lower, and is simple in structure, and steel consumption is little, makes more convenient.
Four, description of drawings
Fig. 1 leads directly to flow-guiding type sack cleaner front view
Fig. 2 leads directly to flow-guiding type sack cleaner vertical view
Fig. 3 leads directly to flow-guiding type sack cleaner left view
Fig. 4 partition shape figure
1. air inlets among the figure, 2. import loudspeaker, 3. shell, 4. air outlet, 5. deflector, the 6. air-flow unit that distributes, 7. dividing plate, 8. filter bag and bag cage, 9. card, 10. deashing device 11. exhaust chambers, 12. ash buckets.
Five, the specific embodiment
The straight-through flow-guiding type sack cleaner that employing the utility model proposes, the applicant implements in No. 3 boiler flue gas purification dedust innovations of Henan Jiaozuo Power Plant engineering.
The boiler initial parameter:
● boiler shape: super-pressure single reheat circulating coal powder boiler;
● exhaust gas volumn: 400000 * 4 m
3/ h;
● flue-gas temperature: 160 ℃;
● boiler generating set: 220 MW;
● boiler capacity: 670 t/h;
Concrete implementation step is as follows:
1, shell 3, air inlet 1, import loudspeaker 2, air outlet 4, the ash bucket 12 of straight-through flow-guiding type sack cleaner are installed.
2, mounting guiding board 5 in deduster air inlet 1 at deduster enclosure interior space mounting dividing plate 7, is installed air-flow distributed component 6 in deduster import loudspeaker 2.
3, install sack cleaner card 9, pulse ash remover 10 is installed, deduster exhaust chamber 11 is installed, filter bag and bag cage 8 is installed at last.
4, after above installment work is finished; done the test of air-flow distribution modelling at the scene on the deduster material object; according to result of the test; when the water conservancy diversion angle of deflector 5 is 15 °; when air-flow distributed component 6 is three layers of porous form; the ratio that gas shunting back air quantity distributes is: Q1: Q2: Q3=30%: 35%: 35%
The speed average of facining the wind of deduster import position filter bag 8 is: 1.039m/s, satisfy the requirement of filter bag long-life, and result of the test meets design requirement fully, and water conservancy diversion, the gentle distributions effect of shunting be ideal very.
Ignition of the boiler operation generating once puts into operation successfully, moves after three months, and Henan Electric Power Experiment Research Institute has carried out on-the-spot test to deduster, and test result is as follows:
● boiler unit generated energy: 211～213MW
● total exhaust gas volumn: 1548893m
3/ h
● flue gas mean temperature: 130 ℃
● deduster outlet concentration of emission: 16.7～18.6mg/Nm
3
● average dust removal efficiency: 99.94%;
● deduster running resistance: 1068Pa;
Wherein, filtration resistance: 871Pa;
Structural drag: 197Pa;
Above test result is not difficult to find out: the straight-through flow-guiding type sack cleaner outlet concentration of emission that the utility model proposes is very low, only 16.7～18.6mg/Nm
3, (discharging standards of new promulgation is 50mg/Nm much smaller than national standard
3); The average running resistance of deduster is very low, is that 1068Pa, particularly structural drag are 197Pa only, are far smaller than the running resistance and the structural drag of traditional deduster.By this project case study on implementation, the straight-through flow-guiding type sack cleaner running resistance that the utility model proposes is low, and particularly structural drag is low, the efficiency of dust collection height, and characteristics such as simple in structure have obtained abundant checking.
Claims (7)
1, a kind of straight-through flow-guiding type sack cleaner, form by air inlet (1), import loudspeaker (2), deduster shell (3), air outlet (4), filter bag and bag cage (8), card (9), deashing device (10), exhaust chamber (11), ash bucket (12), it is characterized in that in air inlet (1), being provided with deflector (5), air-flow distributed component (6) is set in import loudspeaker (2), dividing plate (7) is set in the deduster inner space, and deashing device (10) is installed in the exhaust chamber (11).
2, device according to claim 1 is characterized in that loose-leaf or axle sleeve articulated form are adopted in the installation of deflector (5).
3, device according to claim 1 is characterized in that dividing plate (7) is trapezoidal at the position of import loudspeaker (2), is stairstepping in the zone of filter bag and bag cage (8).
4, device according to claim 1 is characterized in that dividing plate (7) can be arranged on a side of deduster inner space.
5, device according to claim 1 is characterized in that dividing plate (7) can be arranged on the both sides of deduster inner space.
6, device according to claim 1 is characterized in that air-flow distributed component (6) adopts porous plate, shutter or screen net structure.
7, device according to claim 1 is characterized in that exhaust chamber (11) is cabin version, and afterbody has exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076339 CN2717510Y (en) | 2004-08-18 | 2004-08-18 | Straight-through guide bag-type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420076339 CN2717510Y (en) | 2004-08-18 | 2004-08-18 | Straight-through guide bag-type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717510Y true CN2717510Y (en) | 2005-08-17 |
Family
ID=34893873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420076339 Expired - Lifetime CN2717510Y (en) | 2004-08-18 | 2004-08-18 | Straight-through guide bag-type dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717510Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851706A (en) * | 2009-11-12 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Electrolysis flue gas dry-purification system |
| CN108031196A (en) * | 2017-12-11 | 2018-05-15 | 盐城市赛隆节能技术工程有限公司 | A kind of low-voltage pulse long-bag dust remover |
| CN109078438A (en) * | 2018-09-03 | 2018-12-25 | 王鹏 | A method of improving Bricks and Tiles Plant's brickmaking workshop air quality |
| CN109078398A (en) * | 2018-09-03 | 2018-12-25 | 王鹏 | A kind of industry bag filter |
-
2004
- 2004-08-18 CN CN 200420076339 patent/CN2717510Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851706A (en) * | 2009-11-12 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Electrolysis flue gas dry-purification system |
| CN102851706B (en) * | 2009-11-12 | 2016-01-13 | 沈阳铝镁设计研究院有限公司 | Electrolysis smoke dry purifying system |
| CN108031196A (en) * | 2017-12-11 | 2018-05-15 | 盐城市赛隆节能技术工程有限公司 | A kind of low-voltage pulse long-bag dust remover |
| CN109078438A (en) * | 2018-09-03 | 2018-12-25 | 王鹏 | A method of improving Bricks and Tiles Plant's brickmaking workshop air quality |
| CN109078398A (en) * | 2018-09-03 | 2018-12-25 | 王鹏 | A kind of industry bag filter |
| CN109078438B (en) * | 2018-09-03 | 2020-10-30 | 浙江恒辉建材有限公司 | Method for improving air quality of brick making workshop of brick and tile factory |
| CN109078398B (en) * | 2018-09-03 | 2021-01-15 | 安徽茗达专用汽车制造有限公司 | Industrial bag-type dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040818 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |