CN207286937U - A kind of compact pulse backblowing cleaning ash filter structure - Google Patents
A kind of compact pulse backblowing cleaning ash filter structure Download PDFInfo
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- CN207286937U CN207286937U CN201721061575.XU CN201721061575U CN207286937U CN 207286937 U CN207286937 U CN 207286937U CN 201721061575 U CN201721061575 U CN 201721061575U CN 207286937 U CN207286937 U CN 207286937U
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Abstract
A kind of compact pulse backblowing cleaning ash filter structure, including filter housings, filter head housings body sidewall lower section are provided with gas feed, gas vent are provided with above side wall；Tube sheet is equipped with filter head housings body, multiple filter cores are fixed on tube sheet by nut；An entirety is connected into by Turbogrid plates between multiple filter core lower ends, blowback guiding tube is set above each filter core；Back-blowing device is provided with above blowback guiding tube, back-blowing device includes gas collecting tube, the pulse valve being arranged on gas collecting tube, the injection tube corresponding with blowback guiding tube number of positions being arranged on below gas collecting tube, according to filter core sum, several corresponding injection tubes of filter core are divided into one group, one gas collecting tube of every group of setting；Filter core, blowback guiding tube and injection tube are arranged concentrically；During starting impulse deashing, purge gas carries out blowback by gas collecting tube and injection tube to blowback guiding tube and filter core；The utility model ash-removal effect is good, and purge gas consumption is small；It can ensure that filter element is not easy to be damaged during reverse gas cleaning.
Description
Technical field
The utility model belongs to the energy, chemical field, and in particular to a kind of compact pulse backblowing cleaning ash filter structure.
Background technology
In recent years, as China's Development of Coal Chemical Industry is rapid, high-temperature gas-solid isolation technics is widely used in pressurization of dry pulverized coal gas
Change technical field.High using dry method dust filter efficiency, going out battery limit (BL) synthesis gas dust content can control in 1mg/Nm completely3With
Under, prevent synthesis gas band water band ash and caused downstream to block up tower, destroy the problems such as catalyst, dust removal process does not produce waste water, at the same time
Dry ash is conducive to solid waste comprehensive utilization as cement building material etc..
Cleaning ash filter is mainly used for process gas dust removal by filtration and exhaust gas filter dedusting etc..High temperature and pressure fly-ash filter is
The core equipment of dry-dedusting system.The ceramic element or the design longevity of sintering metal filter core that high temperature and pressure fly-ash filter uses
When life generally 8000 is small, the leakage of ceramic filter element will cause whole gasification installation to stop.Blowback is clear in operational process
Ash be not thorough cause dedusting pressure drop it is long-term it is higher be the principal element for causing filter element longevity too short.On existing engineering construction
Some filter cores are generally divided into one group, every group of filter core sets a guiding tube to carry out reverse gas cleaning.It is poor according to running during operation
Pressure sets blowback cycle starting impulse valve deashing.Patent 201210177784.6 and patent 201520178410.7 propose respectively
Tubaeform injector back-blowing device and Venturi injector fixing device.These methods are from blowback injection method, fixation
Structure optimization etc. improves the reliability of device.But due to the higher dedusting brought greatly with filtration velocity of dust load
The problems such as pressure drop is high, deashing is frequent, deashing is not thorough can not overcome completely.Meanwhile blowback is grouped to filter core, with group inner filter core arteries and veins
Qi of chong channel ascending adversely intensity of flow difference is larger, and blowback effect difference is larger；For ease of packet, blank is larger between each group, causes apparatus casing
It is huge.In addition to high temp/pressure filter, also there are the discharge filters such as lock hopper exhaust, air lift exhaust in dry-dedusting system.This
A little filters are generally intermittent duty, and filter takes blowback air-flow purge mode, and blowback nitrogen consumption is big, ash-removal effect compared with
It is weak.Since pressure release exhaust at initial stage peak volume is big, solid content is high, easily causes filtering differential pressure height to cause Filter Core Failure.For in solution
Problem is stated, it is a very significant task to develop a kind of highly efficient durable compact pulse backblowing deashing filtration apparatus.
The content of the invention
The shortcomings that in order to overcome the above-mentioned prior art, the purpose of this utility model is to provide a kind of compact pulse backblowing
Cleaning ash filter structure, ash-removal effect is good, and purge gas consumption is small；It can ensure that filter element is not during reverse gas cleaning
Easily it is damaged, stifled ash is not easy between filter element and is built bridge.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
A kind of compact pulse backblowing cleaning ash filter structure, including filter housings 1,1 side wall of filter housings lower section
Gas feed 9 is provided with, gas vent 10 is provided with above side wall；Tube sheet 2 is equipped with filter housings 1, multiple filter cores 3 are logical
Cross nut 14 to be fixed on tube sheet 2, sealed between filter core 3 and tube sheet 2 by gasket 13, avoid dusty gas from filter core 3 and pipe
The clean gas side of the top of tube sheet 2 is sealed in the gap of plate 2；Between multiple 3 lower ends of filter core by Turbogrid plates 12 connect into one it is whole
Body, is fixed between tube sheet 2 and Turbogrid plates 12 by some lacing wires 11, and each top of filter core 3 sets blowback guiding tube 7；Blowback is drawn
The top of conduit 7 is provided with back-blowing device, and back-blowing device includes gas collecting tube 5, the pulse valve 8 being arranged on gas collecting tube 5, is arranged on collection
The injection tube 6 corresponding with 7 number of positions of blowback guiding tube of the lower section of tracheae 5, it is according to the sum of filter core 3, filter core 3 is corresponding some
A injection tube 6 is divided into one group, one gas collecting tube 5 of every group of setting；The filter core 3, blowback guiding tube 7 and injection tube 6 are arranged concentrically；
During starting impulse deashing, purge gas carries out blowback by gas collecting tube 5 and injection tube 6 to blowback guiding tube 7 and filter core 3.
3 material of filter core is sintering ceramics or sintering metal.
The 7 lower bands internal thread of blowback guiding tube, uses with filter core 3 and is threadedly coupled, and is sealed by gasket 13.
The blowback guiding tube 7 uses venturi tube structure, and diffusion segment length is accelerate segment length 2~10 times.
Reinforcing plate 16 and casing 15 are provided between the gas collecting tube 5 and injection tube 6, is adopted between gas collecting tube 5 and reinforcing plate 16
It is fixedly connected with welding manner, injection tube 6 is used with casing 15 and is threadedly coupled, injection tube 6 and the connection screw thread length of casing 15
It is adjustable, according to aerodynamics condition is calculated, adjust the distance between injection tube 6 and blowback guiding tube 7 under different operating modes.
6 structure of injection tube is contracting noz(zle) or Venturi nozzle.
The gas collecting tube 5 is grouped according to 3 sum of filter element, is at least divided into 1 group.
Fixed between the gas collecting tube 5 and tube sheet 2 by support plate 4, flanged joint is used between each section of gas collecting tube 5, is easy to
Installation is dismantled with maintenance.
The pulse width of the pulse valve 8 uses commutator pulse blowback or fixed difference in 100ms~1000ms, blowback pattern
Press pulse backblowing.
The 12 upside width of Turbogrid plates is narrow, roof structure should be used when width is larger, to prevent dust stratification from building bridge.
Compared to the prior art compared with the utility model possesses following advantage：
1st, the every filter core of this filtration apparatus configures a guiding tube, and an injection tube is set above each guiding tube.Filter
Core, guiding tube, injection tube are concentric in vertical direction.Injection tube is connected by screw thread with gas collecting tube, several injection tubes are divided into one
Group, one gas collecting tube of every group of setting, gas collecting tube are connected with pulse valve.So compact arrangement considerably reduces equipment shell
Body size.
2nd, this filtration apparatus is in reverse gas cleaning, starting impulse valve, and purge gas enters gas collecting tube, then is accelerated by injection tube
The pulse backblowing air-flow of one higher speed high pressure is produced afterwards, will be in guiding tube inlet shape when this strand of air-flow enters guiding tube
Into a negative pressuren zone, an external suction thus is provided to the dusty gas of entrance area, is inhaled so as to produce volume, makes dust-laden
The throat that gas enters guiding tube with blowback air continues to accelerate, then enters filter core inner surface after diffusion, then through filtering
Medium, produces filter cake one stronger blowback impulse force, and then filter cake is departed from filter media surface under momentum effect, finally
Realize that reverse gas cleaning regenerates.The dusty gas of guiding tube inlet is thus greatly make use of, increases the tolerance of blowback air, together
When, by accelerating twice, it greatly strengthen ash-removal effect of the blowback air to filter core.
3rd, the distance between the injection tube of this filtration apparatus and guiding tube can stretch so that equipment can be in different operating modes
Lower pulsatile effect is optimal.Every filter core bottom is fixed by Turbogrid plates, all filter cores is connected to become an entirety, on flase floor
Side width should be as far as possible narrow, and roof structure should be used when width is larger, to prevent dust stratification crane span structure between filter element.Turbogrid plates with
Some lacing wires are set between tube sheet, some supports are set between tube sheet and gas collecting tube, such a fixed support structure can ensure that filtering
Element can sustain the high speed impact of blowback air in blowback, and be not easy to be damaged.
Brief description of the drawings
Fig. 1 is a kind of " highly efficient durable compact pulse backblowing cleaning ash filter structure " structural representation of the utility model
Figure.
Fig. 2 is the partial structural diagram between the tube sheet 2, filter core 3, guiding tube 7 of the utility model.
Fig. 3 is the partial structural diagram between the gas collecting tube 5 of the utility model and injection tube 6.
Fig. 4 is the partial schematic diagram that blowback air volume inhales diffusion between the injection tube 6 of the utility model and guiding tube 7.
Fig. 5 is 12 structure diagram of flase floor of the utility model.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is further described.
Skilled in the art realises that the description below is not the limitation to scope of protection of the utility model.It is any in this reality
With the improvement and change made on novel foundation all within the scope of protection of the utility model.
Compact pulse backblowing cleaning ash filter structure
As depicted in figs. 1 and 2, a kind of compact pulse backblowing cleaning ash filter structure of the utility model, including filter
Housing 1,1 side wall of filter housings lower section are provided with gas feed 9, gas vent 10, dusty gas are provided with above side wall
Enter from gas feed 9, discharged from gas vent 10；Tube sheet 2 is equipped with filter housings 1, multiple filter cores 3 are solid by nut 14
It is scheduled on tube sheet 2, is sealed between filter core 3 and tube sheet 2 by gasket 13, avoids dusty gas from the gap of filter core 3 and tube sheet 2
Seal in the clean gas side of the top of tube sheet 2；Between multiple 3 lower ends of filter core an entirety, tube sheet 2 and grid are connected into by Turbogrid plates 12
Fixed between panel 12 by some lacing wires 11, each top of filter core 3 sets blowback guiding tube 7；The top of blowback guiding tube 7 is set
Have a back-blowing device, back-blowing device include gas collecting tube 5, the pulse valve 8 being arranged on gas collecting tube 5, be arranged on the lower section of gas collecting tube 5 with
The corresponding injection tube 6 of 7 number of positions of blowback guiding tube, according to the sum of filter core 3, several the corresponding injection tubes 6 of filter core 3 are divided into
One group, one gas collecting tube 5 of every group of setting；The filter core 3, blowback guiding tube 7 and injection tube 6 are arranged concentrically；Starting impulse deashing
When, purge gas carries out blowback by gas collecting tube 5 and injection tube 6 to blowback guiding tube 7 and filter core 3.
As the preferred embodiment of the utility model, 3 material of filter core is sintering ceramics or sintering metal.
As the preferred embodiment of the utility model, the 7 lower bands internal thread of blowback guiding tube, uses with filter core 3
It is threadedly coupled, and is sealed by gasket 13.
As the preferred embodiment of the utility model, the blowback guiding tube 7 uses venturi tube structure, diffusion segment length
Spend to accelerate 2~10 times of segment length.
As shown in figure 3, the preferred embodiment as the utility model, is provided between the gas collecting tube 5 and injection tube 6 and adds
Strong plate 16 and casing 15, are fixedly connected, injection tube 6 is used with casing 15 between gas collecting tube 5 and reinforcing plate 16 using welding manner
It is threadedly coupled, injection tube 6 and the connection screw thread length of casing 15 are adjustable, according to aerodynamics condition is calculated, adjust different works
The distance between injection tube 6 and blowback guiding tube 7 under condition.
As the preferred embodiment of the utility model, 6 structure of injection tube is contracting noz(zle) or Venturi nozzle.
As the preferred embodiment of the utility model, the gas collecting tube 5 is grouped according to 3 sum of filter element,
At least it is divided into 1 group.
As the preferred embodiment of the utility model, fixed between the gas collecting tube 5 and tube sheet 2 by support plate 4, gas collection
Flanged joint is used between each section of pipe 5, is easily installed and is dismantled with maintenance.
As the preferred embodiment of the utility model, the pulse width of the pulse valve 8 is in 100ms~1000ms, instead
Blowing mould formula is using commutator pulse blowback or fixed differential pressure pulse backblowing.
As shown in figure 5, the preferred embodiment as the utility model, the 12 upside width of Turbogrid plates should be as far as possible narrow,
Roof structure should be used when width is larger, to prevent dust stratification from building bridge.
The operation principle of the utility model is：Dusty gas enters the ash-laden gas side of the lower section of tube sheet 2 from gas feed 9,
It is filtered out by fly ash granule during filter core 3, downstream is gone in clean gas side of the clean gas after filtering above tube sheet 2.Filter core 3
In the filter cake that filter process is formed, air-flow can be caused gradually to increase by caused pressure drop, when pressure difference reaches certain value,
Just need to carry out reverse gas cleaning to filter, as shown in figure 4, during starting impulse deashing, purge gas passes through gas collecting tube 5 and injection
Pipe 6 carries out blowback to blowback guiding tube 7 and filter core 3.
Claims (10)
- A kind of 1. compact pulse backblowing cleaning ash filter structure, it is characterised in that：Including filter housings (1), filter head housings Gas feed (9) is provided with below body (1) side wall, gas vent (10) is provided with above side wall；Set in filter housings (1) There is tube sheet (2), multiple filter cores (3) are fixed on tube sheet (2) by nut (14), pass through gasket between filter core (3) and tube sheet (2) (13) seal, avoid dusty gas from sealing in the clean gas side above tube sheet (2) from the gap of filter core (3) and tube sheet (2)；It is more An entirety is connected into by Turbogrid plates (12) between a filter core (3) lower end, by some drawings between tube sheet (2) and Turbogrid plates (12) Muscle (11) is fixed, and blowback guiding tube (7) is set above each filter core (3)；Back-blowing device is provided with above blowback guiding tube (7), Back-blowing device include gas collecting tube (5), be arranged on gas collecting tube (5) pulse valve (8), be arranged on below gas collecting tube (5) with it is anti- The corresponding injection tube (6) of guiding tube (7) number of positions is blown, according to filter core (3) sum, by several corresponding injections of filter core (3) Pipe (6) is divided into one group, one gas collecting tube (5) of every group of setting；The filter core (3), blowback guiding tube (7) and injection tube (6) are concentric Set；During starting impulse deashing, purge gas is by gas collecting tube (5) and injection tube (6) to blowback guiding tube (7) and filter core (3) Carry out blowback.
- A kind of 2. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The filter Core (3) material is sintering ceramics or sintering metal.
- A kind of 3. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The blowback Guiding tube (7) lower bands internal thread, uses with filter core (3) and is threadedly coupled, and passes through gasket (13) and seal.
- A kind of 4. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The blowback Guiding tube (7) uses venturi tube structure, and diffusion segment length is accelerate segment length 2~10 times.
- A kind of 5. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The gas collection Reinforcing plate (16) and casing (15) are provided between pipe (5) and injection tube (6), using weldering between gas collecting tube (5) and reinforcing plate (16) The mode of connecing is fixedly connected, and injection tube (6) is used with casing (15) and is threadedly coupled, injection tube (6) and the connection screw thread of casing (15) Length is adjustable, according to aerodynamics condition is calculated, adjusts under different operating modes between injection tube (6) and blowback guiding tube (7) Distance.
- A kind of 6. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：Injection tube (6) structure is contracting noz(zle) or Venturi nozzle.
- A kind of 7. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The gas collection Pipe (5) is grouped according to filter element (3) sum, is at least divided into 1 group.
- A kind of 8. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The gas collection Manage and fixed between (5) and tube sheet (2) by support plate (4), use flanged joint between each section of gas collecting tube (5), be easily installed and examine Repair dismounting.
- A kind of 9. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The pulse For the pulse width of valve (8) in 100ms~1000ms, blowback pattern uses commutator pulse blowback or fixed differential pressure pulse backblowing.
- A kind of 10. compact pulse backblowing cleaning ash filter structure according to claim 1, it is characterised in that：The grid Width is narrow on the upside of panel (12), roof structure should be used when width is larger, to prevent dust stratification from building bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721061575.XU CN207286937U (en) | 2017-08-23 | 2017-08-23 | A kind of compact pulse backblowing cleaning ash filter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721061575.XU CN207286937U (en) | 2017-08-23 | 2017-08-23 | A kind of compact pulse backblowing cleaning ash filter structure |
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| Publication Number | Publication Date |
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| CN207286937U true CN207286937U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721061575.XU Active CN207286937U (en) | 2017-08-23 | 2017-08-23 | A kind of compact pulse backblowing cleaning ash filter structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335297A (en) * | 2017-08-23 | 2017-11-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of compact pulse backblowing cleaning ash filter |
-
2017
- 2017-08-23 CN CN201721061575.XU patent/CN207286937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335297A (en) * | 2017-08-23 | 2017-11-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of compact pulse backblowing cleaning ash filter |
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