CN105944458A - Smoke dedusting device and method - Google Patents
Smoke dedusting device and method Download PDFInfo
- Publication number
- CN105944458A CN105944458A CN201610346153.0A CN201610346153A CN105944458A CN 105944458 A CN105944458 A CN 105944458A CN 201610346153 A CN201610346153 A CN 201610346153A CN 105944458 A CN105944458 A CN 105944458A
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- Prior art keywords
- dust
- porous plate
- flue gas
- smoke
- flue
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a smoke dedusting device and method. The smoke dedusting device comprises a porous plate which is arranged in a smoke flue and is perpendicular to a smoke flowing direction, a plurality of columns of screen holes different in hole diameter are distributed in the porous plate, aperture ratio of each screen hole is 10-60%, and the hole diameter of the screen holes is 10-100 nm. In this way, when smoke flows through the porous plate, most of dust in the smoke collides with the porous plate, loses kinetic energy and changes flowing direction, so that the dust is finally intercepted, dedusted smoke can smoothly pass the screen holes to continue flowing, and the objective of smoke dedusting is achieve; flowing speed of the smoke when flowing through the porous is ensured to be basically unaffected, so that stable flowing and continuous and stable dedusting of the smoke are realized. The smoke dedusting device has the advantages of simple structure, low manufacturing cost, convenience in mounting, no increase of occupied area, small pressure loss, capability of effectively lowering energy consumption and the like. The smoke dedusting method is simple to operate, good in dedusting effect and suitable for large-scale popularization and application.
Description
Technical field
The present invention relates to dedusting technical field, particularly relate to a kind of for large-scale coal furnace high temperature tail
The fume dust remover of gas waste heat recovery apparatus and dust collection method.
Background technology
The high-temperature tail gas residual neat recovering system of large-scale coal furnace includes that waste heat boiler, air preheater etc. set
Standby, wherein, waste heat boiler is to utilize high-temperature tail gas to produce steam or hot water to heat water, reaches waste heat
Reclaiming and the purpose of recycling, waste heat boiler belongs to energy-saving environmental protection device, which not only reduces tail gas row
High-volume, it is substantially reduced environmental pollution, effectively also reclaims heat simultaneously.Air preheater then utilizes
Fume afterheat heats the air needed for fuel combustion, uses air preheater on the one hand boiler can be made to arrange
Cigarette temperature reduces, and improves boiler thermal output, on the other hand it be also possible to use high-temperature air burning, improves
Burning condition, makes the heat loss due to incomplete combustion of fuel decline, thus improves boiler thermal output further,
And after using hot-air burning, in-furnace temperature raises, and radiant heat transfer is strengthened, and can save evaporation heating
Face, this is equivalent to replace, with cheap Air Preheater Heating Surface, the evaporating heating surface that price is higher, has
It is beneficial to promote the economy of boiler manfacturing.Therefore, the waste heat recovery apparatus of high-temperature flue gas is for coal furnace
Energy-saving and emission-reduction significant.
But, owing to high-temperature flue gas usually containing substantial amounts of dust, about 14,000mg/m3, easily
Cause the serious dust stratification of above-mentioned waste heat recovery apparatus, not only reduce radiant heat transfer, cause heat-energy losses,
The more important thing is and also will affect equipment life, force the frequent parking maintenance of residual neat recovering system, seriously drop
The safety that low system is run, adds energy consumption, improves production cost.To this end, prior art
Frequently with dust arrester, ash-laden gas is carried out dust removal process, such as, Chinese patent literature
CN202096836U discloses this ultra-temperature flue gas deduster a kind of, and it includes ash bucket, is connected with ash bucket
Intake stack, be arranged on the low beam above ash bucket, be arranged on the middle casing above low beam, be arranged on
Upper box above middle casing, the most cotton mistake being arranged on the orifice plate within upper box, being arranged on orifice plate
Filter, the wind pipe being connected with upper box, the compressed air line that is connected upper box and middle casing.
Although the sack cleaner in above-mentioned technology has, air-tightness is good, high temperature resistant, acid-alkali-corrosive-resisting, filtration
Precision is high, heat loss is little, the advantage of length in service life, but due to the most cotton filter in this cleaner unit
It is a kind of by granular inorganic matter and the porous filter-material made by fiber of boning, for ensureing good filtration effect
Really, the aperture of filtrate is the least and close, thus causes sack cleaner resistance in use relatively
Greatly (about 20KPa), this adds system energy consumption undoubtedly.It addition, sack cleaner is as one solely
Vertical device, needs certain equipment investment, and also needs to take segment space, have thus for place
The flue gas ash removal occasion inapplicable of limit.
Summary of the invention
Present invention solves the technical problem that and be to overcome the energy existing for existing high temperature fume dust removal device
The defect that consumption is high, equipment investment is big, and then energy consumption is low, it is little to invest, can be used for large-scale combustion to provide one
The fume dust remover of coal stove high-temperature tail gas waste heat recovery apparatus and dust collection method.
To this end, the technical scheme that the present invention realizes above-mentioned purpose is:
A kind of fume dust remover, including,
Porous plate, is positioned at flue and the flow of flue gas direction with described flue is vertically arranged, in institute
Stating and sieve aperture that some row aperture different is distributed on porous plate, described in each column, the percent opening of sieve aperture is
10～60%, the aperture of described sieve aperture is 10～100mm.
Described porous plate is folding shape plate, in the district being perpendicular to described flow of flue gas direction of described porous plate
The aperture of the described sieve aperture in territory is more than being arranged on not hanging down of described porous plate with described flow of flue gas direction
The aperture of the described sieve aperture in straight region.
The flap height H of described porous plate is 50～80mm, and flanging spacing L is 50～200mm.
Described porous plate cross section on described flow of flue gas direction is zigzag, waveform or head and the tail
" several " font being connected.
On described porous plate, at first with the aperture of the described sieve aperture in smoke contacts region more than last with
The aperture of the described sieve aperture in smoke contacts region.
Generally circular in shape, oval, triangle, square, rhombus, the rectangle of described sieve aperture,
Or polygon.
Described fume dust remover also includes dust collecting box, connects setting with described flue, be suitable to accommodate by
Described porous plate retain under dust.
Described dust collecting box includes being sequentially connected with the dust import of setting, dust collecting box cavity and dust outlet,
Wherein,
Described dust import is connected with described flue, at described dust import and described dust collecting box cavity
Between be provided with into ash push-pull valve, be provided with clear between described dust collecting box cavity and described dust outlet
Ash push-pull valve.
Described porous plate is fixed on the inwall of described flue by angle steel；
Described air flue horizontal is arranged, and described dust collecting box is vertically arranged.
A kind of method utilizing above-mentioned fume dust remover that flue gas is carried out dedusting, comprises the steps:
Close described deashing push-pull valve, be then turned on described in enter ash push-pull valve, treat that flue gas flows through described flue gas
After dust arrester, the dust in described flue gas enters in described dust collecting box, completes the dedusting to flue gas；
When needing ash discharge, enter ash push-pull valve described in closedown and open described deashing push-pull valve, the row of completing simultaneously
Ash.
The technique scheme of the present invention has the advantage that
1, fume dust remover of the present invention, hangs down with flow of flue gas direction by arranging in flue
Straight porous plate, and on this porous plate, be distributed some row there is the sieve aperture of special pore size distribution, such flue gas
When flowing through porous plate, the most dust in flue gas and porous plate occur to clash into and kinetic energy loss also
Changing flow direction so that dust is finally retained down, the flue gas after dedusting then can pass through
Sieve aperture continues flowing, thus reaches the purpose of flue gas ash removal；Meanwhile, the fume dust remover of the present invention
Also define the percent opening of sieve aperture, to guarantee that the flue gas flow velocity when flowing through porous plate is substantially unaffected,
Thus realize the smooth flow of flue gas and continual and steady dust removing effects.Flue gas of the present invention removes
Dirt device can effectively filter the dust of 70% in flue gas, on the one hand waste heat recovery apparatus can be protected not by cigarette
Dirt blocks, the maintenance cycle of extension device, on the other hand also can ensure that the heat of residual neat recovering system
Amount organic efficiency does not reduces, and fume dust remover of the present invention has simple in construction, manufacture
Low cost, easy for installation, do not increase floor space, the pressure loss is little, it is excellent effectively to reduce energy consumption etc.
Point, is particularly suited for the flue gas ash removal of large-scale coal furnace.
2, fume dust remover of the present invention, limits further porous plate as rolling over shape plate, and many
The aperture of the sieve aperture in the region being perpendicular to flow of flue gas direction of orifice plate is more than being arranged on porous plate not
The aperture of sieve aperture region in vertical with flow of flue gas direction, is arranged such and can not only increase flue gas
With the contact area of porous plate, improve efficiency of dust collection, but also advantageously reduce flue gas and hit with porous plate
Resistance when hitting, ensures that flue gas flow rate is substantially unaffected as much as possible.
Preferably, the cross section on flow of flue gas direction of the porous plate in the fume dust remover of the present invention
For zigzag, waveform or end to end " several " font, and on this porous plate at first with
The aperture of the described sieve aperture in smoke contacts region is more than the hole of the described sieve aperture in last and smoke contacts region
Footpath, flap height H is 50～80mm, flanging spacing L is 50～200mm, has above-mentioned setting
Porous plate can make the resistance minimum simultaneously dust removing effects of flue gas best.
3, the fume dust remover of the present invention, is additionally provided with the dust collecting box connected with flue, and it includes depending on
Secondary connect arrange dust import, enter ash push-pull valve, dust collecting box cavity, deashing push-pull valve and dust go out
Mouthful, it is suitable for accommodating the dust under being retained by porous plate, thus better assures that removing continuously flue gas
Dirt.Preferably, described air flue horizontal is arranged, and the most described dust collecting box is vertically arranged, then
Dust under being retained by porous plate then can under the effect of gravity and inertia along porous plate downwards and in a organized way
Fall in dust collecting box, take away dust effectively to prevent partial fume to be obstructed, thus ensure the most effectively
Dust and dust stratification are collected in ground.
4, dust collection method of the present invention has simple to operate, the advantage of good dedusting effect, the suitableeest
In large-scale promotion application.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the structural representation of a kind of embodiment of fume dust remover of the present invention；
Fig. 2 be the cross section on flow of flue gas direction of the porous plate in Fig. 1 be end to end " several "
The structure chart of font；
Fig. 3 is the plane outspread drawing of the porous plate in Fig. 2.
Wherein, reference is as follows:
1-porous plate；2-flue；3-dust collecting box；4-dust import；5-dust collecting box cavity；6-dust goes out
Mouthful；7-enters ash push-pull valve；8-deashing push-pull valve；H-flap height；L-flanging spacing.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, unless otherwise clearly defined and limited, term " be connected ", " connection "
Should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integratedly
Connect；Can be to be joined directly together, or be indirectly connected to by intermediary, it is also possible in being two elements
The connection in portion.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.Additionally, it is involved in invention described below difference embodiment
As long as and technical characteristic each other do not constitute conflict just can be combined with each other.
Embodiment 1
As it is shown in figure 1, the fume dust remover described in the present embodiment includes porous plate 1, it is positioned at flue
In 2 and it is vertically arranged, described many with the flow of flue gas direction (as shown by arrows) in described flue 2
Sieve aperture that some row aperture different is distributed on orifice plate 1, and described in each column, the percent opening of sieve aperture is 10～60%,
The aperture of described sieve aperture is 10～100mm.Fume dust remover in the present embodiment is by setting in flue
Put the porous plate vertical with flow of flue gas direction, and on this porous plate, be distributed some row there is particular bore
The sieve aperture in footpath, such flue gas is when flowing through porous plate, and the most dust in flue gas are sent out with porous plate
Raw shock and kinetic energy loss also change flow direction so that dust is finally retained down, after dedusting
Flue gas then can pass through sieve aperture and continue flowing, thus reach the purpose of flue gas ash removal；Meanwhile, originally
The fume dust remover of invention also defines the percent opening of sieve aperture, to guarantee that flue gas is when flowing through porous plate
Flow velocity be substantially unaffected, thus realize the smooth flow of flue gas and continual and steady dust removing effects.
Fume dust remover in the present embodiment can effectively filter the dust of 70% in flue gas, on the one hand can protect
Waste heat recovery apparatus is not blocked by flue dust, the maintenance cycle of extension device, on the other hand also can be true
The heat recovery efficiency protecting residual neat recovering system does not reduces, and the fume dust remover in the present embodiment
Have simple in construction, low cost of manufacture, easy for installation, do not increase floor space, the pressure loss little,
Can effectively reduce the advantages such as energy consumption, be particularly suited for the flue gas ash removal of large-scale coal furnace.
For increasing the contact area of flue gas and porous plate, improving efficiency of dust collection, described in the present embodiment
Porous plate 1 is preferably folding shape plate, and it can be stamped to form by rustless steel porous plate, described porous plate 1
Being fixed on the inwall of described flue 2 by cross angle steel, to prevent, flue gas flow rate is excessive causes porous
Plate deforms.
Further, for reducing resistance when flue gas clashes into porous plate, in the present embodiment, described
The aperture of the described sieve aperture in the region being perpendicular to described flow of flue gas direction of porous plate 1 is more than arranging
The aperture of the described sieve aperture in not vertical with the described flow of flue gas direction region of described porous plate 1,
To ensure that flue gas flow rate is substantially unaffected as much as possible.
On the basis of technique scheme, as preferred embodiment, as in figure 2 it is shown, this reality
Executing the cross section on described flow of flue gas direction of the described porous plate 1 in example is end to end " several "
Font, flap height H is 50～80mm, flanging spacing L is 50～200mm.But the shape of porous plate
Shape is not limited thereto, and the most also may select other embodiment variant, implements at another
Mode may be selected to be zigzag or waveform.
Resistance minimum dust removing effects simultaneously for making flue gas is best, as it is shown on figure 3, in the present embodiment
Porous plate 1 on, at first with the aperture of the described sieve aperture in smoke contacts region more than finally connecing with flue gas
Touch the aperture of described sieve aperture in region, and the shape of sieve aperture could be arranged to but is not limited to circle, ellipse
Circle, triangle, square, rhombus, rectangle or polygon.
As selectable embodiment, the fume dust remover in the present embodiment also includes dust collecting box 3,
It is sequentially connected with and is provided with dust import 4, dust collecting box cavity 5 and the powder being connected with described flue 2
Dirt outlet 6, is suitable for accommodating the dust under being retained by porous plate.Meanwhile, in order to not affect life
Produce successional in the case of timely deashing, the dust collecting box in the present embodiment also described dust import 4 with
It is provided with into ash push-pull valve 7 between described dust collecting box cavity 5, at described dust collecting box cavity 5 and described powder
It is provided with deashing push-pull valve 8 between dirt outlet 6, thus better assures that the continuous dedusting to flue gas.Separately
Outward, based on volume of production and operational circumstances consider, manual type or pneumatic type push-pull valve can be selected.
In other embodiments, the most described flue 2 is horizontally disposed with, the most described dust collecting box 3 edge
Vertical direction arrange, then the dust under being retained by porous plate then can under the effect of gravity and inertia edge
Porous plate downwards and in an organized way falls in dust collecting box, takes away dust effectively to prevent partial fume to be obstructed,
Ensure the most effectively to collect dust and dust stratification.
It should be noted that the fume dust remover described in the present embodiment may be installed circle, square or
In rectangular flue, in order to prevent, wind-force is excessive may be used without metal solder, can use for dust collecting box
45 degree of groove weldings are to avoid high temperature electrostatic to cause collection ash to stick on dust collecting box inwall.Additionally, according to
The size of dust granules and the difference to ash discharge efficiency requirements, can arrange this enforcement of many groups in flue
Fume dust remover described in example, can reach the dust removal efficiency of 90% substantially.Simultaneously because it is coal-fired
The difference of the burning quality of stove, coal quantity and production capacity, also can be carried out fume dust remover
Adjust in good time, calculate dust collecting box size by dust stratification amount, need timely ash discharge when dust stratification amount reaches limit value.
The method using the fume dust remover in the present embodiment that flue gas carries out dedusting includes walking as follows
Rapid:
Close described deashing push-pull valve, be then turned on described in enter ash push-pull valve, treat that flue gas flows through described flue gas
After dust arrester, the dust in described flue gas enters in described dust collecting box, completes the dedusting to flue gas；
When needing ash discharge, enter ash push-pull valve described in closedown and open described deashing push-pull valve, the row of completing simultaneously
Ash.
Dust collection method described in the present embodiment is simple to operate, and good dedusting effect, is suitable to large-scale promotion
Application.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (10)
1. a fume dust remover, it is characterised in that include,
Porous plate, is positioned at flue and the flow of flue gas direction with described flue is vertically arranged, in institute
Stating and sieve aperture that some row aperture different is distributed on porous plate, described in each column, the percent opening of sieve aperture is
10～60%, the aperture of described sieve aperture is 10～100mm.
Fume dust remover the most according to claim 1, it is characterised in that described porous plate is folding
Shape plate, the hole of the described sieve aperture in the region being perpendicular to described flow of flue gas direction of described porous plate
Footpath is more than the described sieve in not vertical with the described flow of flue gas direction region being arranged on described porous plate
The aperture in hole.
Fume dust remover the most according to claim 2, it is characterised in that the folding of described porous plate
Plate height H is 50～80mm, and flanging spacing L is 50～200mm.
4. according to the fume dust remover described in Claims 2 or 3, it is characterised in that described porous plate
Cross section on described flow of flue gas direction is zigzag, waveform or end to end " several " word
Shape.
5. according to the fume dust remover described in any one of claim 2-4, it is characterised in that described
On porous plate, it is more than last and smoke contacts district with the aperture of the described sieve aperture in smoke contacts region at first
The aperture of the described sieve aperture in territory.
6. according to the fume dust remover described in any one of claim 1-5, it is characterised in that described sieve
Generally circular in shape, oval, triangle, square, rhombus, the rectangle in hole or polygon.
7. according to the fume dust remover described in any one of claim 1-6, it is characterised in that also include
Dust collecting box, connects setting with described flue, is suitable to accommodate the dust under being retained by described porous plate.
Fume dust remover the most according to claim 7, it is characterised in that described dust collecting box includes
It is sequentially connected with the dust import of setting, dust collecting box cavity and dust outlet, wherein,
Described dust import is connected with described flue, at described dust import and described dust collecting box cavity
Between be provided with into ash push-pull valve, be provided with clear between described dust collecting box cavity and described dust outlet
Ash push-pull valve.
9. according to the fume dust remover described in claim 7 or 8, it is characterised in that described porous plate
It is fixed on the inwall of described flue by angle steel；
Described air flue horizontal is arranged, and described dust collecting box is vertically arranged.
10. the fume dust remover utilized described in any one of claim 7-9 carries out dedusting to flue gas
Method, it is characterised in that comprise the steps:
Close described deashing push-pull valve, be then turned on described in enter ash push-pull valve, treat that flue gas flows through described flue gas
After dust arrester, the dust in described flue gas enters in described dust collecting box, completes the dedusting to flue gas；
When needing ash discharge, enter ash push-pull valve described in closedown and open described deashing push-pull valve, the row of completing simultaneously
Ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346153.0A CN105944458A (en) | 2016-05-23 | 2016-05-23 | Smoke dedusting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346153.0A CN105944458A (en) | 2016-05-23 | 2016-05-23 | Smoke dedusting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN105944458A true CN105944458A (en) | 2016-09-21 |
Family
ID=56910438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610346153.0A Pending CN105944458A (en) | 2016-05-23 | 2016-05-23 | Smoke dedusting device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105944458A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578251A (en) * | 2018-12-27 | 2019-04-05 | 四川金象赛瑞化工股份有限公司 | A kind of compressor collector and method |
| CN109724418A (en) * | 2018-11-30 | 2019-05-07 | 郑州旭飞光电科技有限公司 | Deashing device, flue and kiln |
| CN111818986A (en) * | 2018-02-28 | 2020-10-23 | 三菱日立电力系统株式会社 | Exhaust gas treatment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111818986A (en) * | 2018-02-28 | 2020-10-23 | 三菱日立电力系统株式会社 | Exhaust gas treatment device |
| CN109724418A (en) * | 2018-11-30 | 2019-05-07 | 郑州旭飞光电科技有限公司 | Deashing device, flue and kiln |
| CN109578251A (en) * | 2018-12-27 | 2019-04-05 | 四川金象赛瑞化工股份有限公司 | A kind of compressor collector and method |
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Application publication date: 20160921 |
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