CN104923405B - A kind of wet static dedusting demister - Google Patents
A kind of wet static dedusting demister Download PDFInfo
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- CN104923405B CN104923405B CN201510394154.8A CN201510394154A CN104923405B CN 104923405 B CN104923405 B CN 104923405B CN 201510394154 A CN201510394154 A CN 201510394154A CN 104923405 B CN104923405 B CN 104923405B
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Abstract
The invention discloses a kind of wet static dedusting demister, using the tubular structure of vertical, center is cathode line, is around tubular anode plate, and tubular anode plate upper and lower side is fixed on the support structure；Flue gas can from bottom to top adverse current, can also following current from top to bottom enter electric cleaner in；When counter-flow arrangement, flooding nozzle, negative electrode upper support structure, vortex demister, anode upper support structure, anode lower support structure, vortex distributor, negative electrode lower support structure have been sequentially arranged from top to bottom since top；When down current arrangement, flooding nozzle, negative electrode upper support structure, vortex distributor, anode upper support structure, anode lower support structure, vortex demister, negative electrode lower support structure are sequentially arranged from top to bottom since top in device.The beneficial effects of the invention are as follows：Improve the efficiency of dedusting demisting.
Description
Technical field
The present invention relates to dedusting demister, more specifically, it is related to a kind of wet static dedusting demister.
Background technology
Wet electrical dust precipitator is used for large thermal power plant flue gas purification system, is set as the follow-up dedusting of wet desulphurization absorption tower
It is standby, dust, SO can be removed3, the multiple pollutant such as heavy metal, be the key equipment for realizing thermal power plant's cleaning discharge.Due to big
Part repowering project has installed wet desulphurization device, and not only place space is limited, and to desulfurizer after net cigarette
Gas dedusting and demisting efficiency requirement are again very high, and traditional wet electrical dust precipitator cannot simultaneously meet system requirements.
The content of the invention
The purpose of the present invention is to overcome deficiency of the prior art, there is provided a kind of rational in infrastructure, dedusting and fog removal performance are good
Wet static dedusting demister.
This wet static dedusting demister, using the tubular structure of vertical, center is cathode line, is around pipe
Formula positive plate, tubular anode plate upper and lower side is fixed on the support structure；Flue gas can from bottom to top adverse current, can also be from top to bottom
Following current enters in electric cleaner；When counter-flow arrangement, it has been sequentially arranged from top to bottom since top on flooding nozzle, negative electrode and has been propped up
Support structure, vortex demister, anode upper support structure, anode lower support structure, vortex distributor, negative electrode lower support structure；When
During down current arrangement, flooding nozzle, negative electrode upper support structure, vortex distribution are sequentially arranged from top to bottom since top in device
Device, anode upper support structure, anode lower support structure, vortex demister, negative electrode lower support structure.
As preferred：The cathode line is corrosion-resistant metal alloys material, is arranged in the center of tubular anode plate, is
Solid or hollow circular-tube between 5~10mm of diameter, is evenly equipped with prickle or acupuncture, prickle material and cathode line phase in cathode line
Together, prickle is welded in cathode line.
As preferred：Tubular anode plate inner cylinder is non-metallic material, tubular anode plate outside winding layer of metal coil.
As preferred：Vortex distributor is made up of one group of concentric spiral board, is bolted in cathode line；Vortex
Distributor is nonmetallic electrically non-conductive material；A pre-arcing region is additionally provided with before tubular anode plate.
As preferred：Vortex demister is made up of one group of concentric spiral board, is fixed in cathode line by bolt-center,
Periphery keeps certain interval with tubular anode plate.Vortex demister is nonmetallic electrically non-conductive material；Its spiral board choice direction with
Vortex distributor is opposite.
As preferred：When counter-flow arrangement, tubular anode plate perimeter of section is c, and area of section is s, and its equivalent internal diameter is D
(D=4s/c)；The length of tubular anode plate is L, and in wet-esp arrival end, its lower end supports vortex distributor under negative electrode
The pre-arcing region distance of structure is L3, and distance of its upper end away from anode lower end is L1；The selection of internal diameter D meets gas in positive plate
Rate of flow of fluid scope is 2m/s~4m/s, and the residence time that the selection of L meets gas in positive plate is 0.5s~1.5s；L1 value models
It is 10~30mm to enclose, and L3 spans are 200~500mm；Vortex distributor is made up of central tube, outer barrel and blade；Outer barrel cuts
Face is circle, a diameter of dw, general dw spans 1/2D~4/5D；Blade plane and horizontal plane angle are s, blade upper end with
Horizontal plane angle is r；The scope of general s is 30 °~50 °, and the scope of r is 10 °~40 °；Blade quantity is 6~72.
As preferred：When counter-flow arrangement, in the wet-esp port of export, its lower end is away from positive plate upper end for vortex demister
Distance is L2；The span of L2 is 10~30mm；Vortex demister is made up of central tube, outer barrel and blade；Outer barrel diameter is
Dc, general dc spans 2/5D~1/2D；The plane of blade 12 is s with horizontal plane angle, and blade lower end is with horizontal plane angle
r；The scope of general s is -30 °~-50 °, and the scope of r is -10 °~-40 °；Blade quantity is 6~72.
As preferred：When down current arrangement, deduster tubular anode plate perimeter of section is c, and area of section is s, and its is equivalent
Internal diameter is D (D=4s/c)；The length of tubular anode plate is L, and, in wet-esp arrival end, its upper end is away from the moon for vortex distributor
The distance of pole upper support structure is L3, and distance of its lower end away from anode upper end is L1；The selection of general internal diameter D is met in positive plate
Gas flow rate range is 2m/s~4m/s, and the residence time that the selection of L meets gas in positive plate is 0.5s~1.5s；General L1
Span is 10~30mm, and L3 spans are 200~500mm；Vortex distributor is made up of central tube, outer barrel and blade；
Outer barrel section is circle, a diameter of dw, general dw spans 1/2D~4/5D；Blade plane is s, blade with horizontal plane angle
Upper end is r with horizontal plane angle；The scope of general s is 30 °~50 °, and the scope of r is 10 °~40 °；Blade quantity is 6~72.
As preferred：When down current arrangement, in the wet-esp port of export, its upper end is away from tubular anode plate for vortex demister
Lower end distance is L2；The span of general L2 is 10~30mm；Vortex demister is made up of central tube, outer barrel and blade；Outward
The a diameter of dc of cylinder, general dc spans are 2/5D~1/2D；Blade plane is s, blade lower end and level with horizontal plane angle
Face angle is r；The scope of general s is -30 °~-50 °, and the scope of r is -10 °~-40 °；Blade quantity is 6~72.
The beneficial effects of the invention are as follows：
Vortex distributor in the present apparatus is made up of one group of concentric spiral board, is bolted in cathode line.Whirlpool
Fluidic distributor is nonmetallic electrically non-conductive material, prevents cathode line from producing short circuit with positive plate.Containing dust and contain SO3, a huge sum of money
When the multiple pollutant flue gases such as category spray film drop are by vortex distributor, under spiral board effect, one is produced around cathode line
Swirling motion, so can not only improve residence time of the gas in the present apparatus, by means of centrifugal force part can also be made big
Granule dust and contain SO3, heavy metal drop etc. by the liquid film capture on positive plate, improve the efficiency of dedusting demisting in advance.Separately
Outward, the choked flow due to being vortexed distributor is acted on, and sets a pre-arcing region before positive plate again, is made dust and is contained SO3, a huge sum of money
The multiple pollutant flue gases such as category spray film drop, can be fully charged in wet electrical dust precipitator entrance extended residence time, from
And improve removal efficiency of the pollutant in wet electrical dust precipitator.
Vortex demister in the present apparatus is made up of one group of concentric spiral board, and cathode line is fixed on by bolt-center
On, periphery keeps certain interval with positive plate, does not hinder the mobility of liquid film on positive plate with guarantee.Vortex demister distributor
It is nonmetallic electrically non-conductive material, prevents cathode line from producing short circuit with positive plate.Its spiral board choice direction and top (following current) under
The vortex distributor in portion's (adverse current) is conversely, can make the dust not being removed in flue gas and contain SO3, heavy metal spray film drop and whirlpool
Stream demister spiral board collides, and so as to effectively be removed, further increases the efficiency of dedusting demisting.
Brief description of the drawings
Fig. 1 be flue gas from bottom to top when schematic structural view of the invention；
Fig. 2 be flue gas from top to bottom when schematic structural view of the invention；
Fig. 3 and Fig. 4 is vortex dispensing arrangement schematic diagram；
Fig. 5 and Fig. 6 is vortex demister structural representation；
Description of reference numerals：Supported under nozzle 1, vortex demister 2, positive plate 3, cathode line 4, vortex distributor 5, negative electrode
Structure 6, anode lower support structure 7, anode upper support structure 8, negative electrode upper support structure 9, central tube 10, outer barrel 11, blade 12.
Specific embodiment
The present invention is described further with reference to embodiment.The explanation of following embodiments is only intended to help and understands this
Invention.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, also
Some improvement and modification can be carried out to the present invention, these are improved and modification also falls into the protection domain of the claims in the present invention
It is interior.
As shown in Figures 1 to 4.This wet static dedusting demister of the invention, using the tubular type knot of vertical
Structure, center is cathode line 4, is around tubular anode plate 3, and the upper and lower side of tubular anode plate 3 is fixed on the support structure；Flue gas can be with
From bottom to top adverse current, can also following current from top to bottom enter electric cleaner in；When counter-flow arrangement, since top from top to bottom
It has been sequentially arranged support knot under flooding nozzle 1, negative electrode upper support structure 9, vortex demister 2, anode upper support structure 8, anode
Structure 7, vortex distributor 5, negative electrode lower support structure 6；When down current arrangement, it is sequentially arranged from top to bottom since top in device
There are flooding nozzle 1, negative electrode upper support structure 9, vortex distributor 5, anode upper support structure 8, anode lower support structure 7, vortex
Demister 2, negative electrode lower support structure 6.
Nozzle 1 at the top of device sprays alkaline aqueous solution from top to down, and its pH is more than 10, and the aqueous solution is in the table of positive plate 3
One layer of liquid film is formed on face, and is constantly flowed downward.High voltage electric field is formed by cathode line 4 and positive plate 3, is made therebetween
Gas ionization produce electric charge, electric charge moves from negative electrode to positive plate.Containing dust and contain SO3, heavy metal spray film drop etc. it is many
Kind of pollutant flue gas adverse current or following current enter in electric cleaner, dust and contain SO3, heavy metal spray film drop etc. is in multiple pollutant
Polar substances it is charged after, moved to positive plate in the presence of electric field force, after reaching positive plate 3, continued on its surface to
It is pulled away after the liquid film capture of lower flowing, so as to complete removing dust and contain SO3, the multiple pollutant such as heavy metal spray film drop
Process.
The cathode line 4 of the present apparatus is corrosion-resistant metal alloys material, is arranged in the center of tubular anode plate 3, one
As be the solid or hollow circular-tube between 5~10mm of diameter, prickle or acupuncture, prickle material and negative electrode are evenly equipped with cathode line 4
Line is identical, and prickle is welded in cathode line.Cathode line is fixed by upper and lower supporting construction, is connected by screw bolts, convenient dismounting.
The inner cylinder of positive plate 3 is non-metallic material, and its section can be circular, positive square, regular pentagon and regular hexagon.Positive plate 3
Outside winds layer of metal coil, to strengthen electric-field intensity.Positive plate 3 is fixed by upper and lower supporting construction, is connected using bolt
Connect, convenient dismounting.
Vortex distributor 5 in the present apparatus is made up of one group of concentric spiral board, is bolted in cathode line 4.
Vortex distributor 5 is nonmetallic electrically non-conductive material, prevents cathode line 4 from producing short circuit with positive plate 3.Containing dust and contain SO3、
When the multiple pollutant flue gases such as heavy metal spray film drop are by vortex distributor, under spiral board effect, one is produced around negative electrode
The swirling motion of line, so can not only improve residence time of the gas in the present apparatus, can also make portion by means of centrifugal force
Divide big dust particle and contain SO3, heavy metal drop etc. by the liquid film capture on positive plate, improve the effect of dedusting demisting in advance
Rate.Further, since the choked flow effect of vortex distributor 5, sets a pre-arcing region again before positive plate 3, make dust and contain
SO3, heavy metal spray film drop etc. multiple pollutant flue gas in wet electrical dust precipitator entrance extended residence time, can be abundant
It is charged, so as to improve removal efficiency of the pollutant in wet electrical dust precipitator.
Vortex demister 2 in the present apparatus is made up of one group of concentric spiral board, and cathode line 4 is fixed on by bolt-center
On, periphery keeps certain interval with positive plate 3, does not hinder the mobility of liquid film on positive plate 3 with guarantee.Being vortexed demister 2 is
Nonmetallic electrically non-conductive material, prevents cathode line 4 from producing short circuit with positive plate 3.Its spiral board choice direction and top (following current) under
The vortex distributor 5 in portion's (adverse current) is conversely, can make the dust not being removed in flue gas and contain SO3, heavy metal spray film drop with
Vortex demister spiral board collides, and so as to effectively be removed, further increases the efficiency of dedusting demisting.
When flue gas flow direction is adverse current：
If Fig. 1, the perimeter of section of tubular anode plate 3 are c, area of section is s, and its equivalent internal diameter is D (D=4s/c)；Tubular type
The length of positive plate is L, and vortex distributor 5 is in wet-esp arrival end, pre-arcing of its lower end away from negative electrode lower support structure
Region distance is L3, and distance of its upper end away from anode lower end is L1；The selection of internal diameter D meets gas flow rate range in positive plate
The residence time that the selection of 2m/s~4m/s, L meets gas in positive plate is 0.5s~1.5s；L1 spans be 10~
30mm, L3 span are 200~500mm；Such as Fig. 3, it is vortexed distributor 5 and is made up of central tube 10, outer barrel 11 and blade 12；Outward
11 sections of cylinder are circle, a diameter of dw, general dw spans 1/2D~4/5D；The plane of blade 12 is s, leaf with horizontal plane angle
The upper end of piece 12 is r with horizontal plane angle；The scope of general s is 30 °~50 °, and the scope of r is 10 °~40 °；The quantity of blade 12 is 6
~72.
Such as Fig. 1, in the wet-esp port of export, its lower end is L2 away from positive plate upper end distance to vortex demister 2；L2's takes
Value scope is 10~30mm；Vortex demister 2 is made up of central tube 10, outer barrel 11 and blade 12；The a diameter of dc of outer barrel 11, typically
Dc spans 2/5D~1/2D；If Fig. 6, the plane of blade 12 are s with horizontal plane angle, the lower end of blade 12 is with horizontal plane angle
r；The scope of general s is -30 °~-50 °, and the scope of r is -10 °~-40 °；The quantity of blade 12 is 6~72.
When flue gas flow direction is following current：
If Fig. 2, the perimeter of section of deduster tubular anode plate 3 are c, area of section is s, and its equivalent internal diameter is D (D=4s/
c)；The length of tubular anode plate is L, and, in wet-esp arrival end, its upper end is away from negative electrode upper support structure for vortex distributor 5
Distance is L3, and distance of its lower end away from anode upper end is L1；The selection of general internal diameter D meets gas flow rate range in positive plate and is
The residence time that the selection of 2m/s~4m/s, L meets gas in positive plate is 0.5s~1.5s；General L1 spans are 10~
30mm, L3 span are 200~500mm；Such as Fig. 5, it is vortexed distributor 5 and is made up of central tube 10, outer barrel 11 and blade 12；Outward
11 sections of cylinder are circle, a diameter of dw, general dw spans 1/2D~4/5D；Such as Fig. 6, the plane of blade 12 and horizontal plane angle
It is s, the upper end of blade 12 is r with horizontal plane angle；The scope of general s is 30 °~50 °, and the scope of r is 10 °~40 °；Blade 12
Quantity is 6~72.
Such as Fig. 2, in the wet-esp port of export, its upper end is L2 away from the lower end of tubular anode plate 3 distance to vortex demister 2；
The span of general L2 is 10~30mm；Vortex demister 2 is made up of central tube 10, outer barrel 11 and blade 12；Outer barrel 11 is straight
Footpath is dc, and general dc spans are 2/5D~1/2D；The plane of blade 12 is s, the lower end of blade 12 and level with horizontal plane angle
Face angle is r；The scope of general s is -30 °~-50 °, and the scope of r is -10 °~-40 °；The quantity of blade 12 is 6~72.
Claims (3)
1. a kind of wet static dedusting demister, it is characterised in that：Using the tubular structure of vertical, center is cathode line
(4), it is around tubular anode plate (3), the fixation of tubular anode plate (3) upper and lower side is on the support structure；Flue gas from bottom to top adverse current
Or following current from top to bottom enters in electric cleaner；When counter-flow arrangement, flushing spray has been sequentially arranged from top to bottom since top
Mouth (1), negative electrode upper support structure (9), vortex demister (2), anode upper support structure (8), anode lower support structure (7), whirlpool
Fluidic distributor (5), negative electrode lower support structure (6)；When down current arrangement, it has been sequentially arranged from top to bottom since top in device
Flooding nozzle (1), negative electrode upper support structure (9), vortex distributor (5), anode upper support structure (8), anode lower support structure
(7), vortex demister (2), negative electrode lower support structure (6)；When counter-flow arrangement, tubular anode plate (3) perimeter of section is c, is cut
Face area is s, and its equivalent internal diameter is D, wherein D=4s/c；The length of tubular anode plate (3) is L, and vortex distributor (5) is wet
Formula electric precipitation arrival end, pre-arcing region distance of its lower end away from negative electrode lower support structure is L3, and its upper end is away from anode lower end
Distance is L1；It is 2m/s~4m/s that the selection of internal diameter D meets gas flow rate range in positive plate, and the selection of L is met in positive plate
The residence time of gas is 0.5s~1.5s；L1 spans are 10~30mm, and L3 spans are 200~500mm；Vortex point
Orchestration (5) is made up of central tube (10), outer barrel (11) and blade (12)；Outer barrel (11) section is circle, a diameter of dw, dw values
Scope 1/2D~4/5D；Blade (12) plane is s with horizontal plane angle, and blade (12) upper end is r with horizontal plane angle；The model of s
It is 30 °~50 ° to enclose, and the scope of r is 10 °~40 °；Blade (12) quantity is 6~72；When down current arrangement, tubular anode plate (3)
Perimeter of section is c, and area of section is s, and its equivalent internal diameter is D, wherein D=4s/c；The length of tubular anode plate (3) is L, vortex
Distributor (5) is L3 in wet-esp arrival end, distance of its upper end away from negative electrode upper support structure, and its lower end is away from anode upper end
Distance be L1；It is 2m/s~4m/s that the selection of internal diameter D meets gas flow rate range in positive plate, and the selection of L meets positive plate
The residence time of interior gas is 0.5s~1.5s；L1 spans are 10~30mm, and L3 spans are 200~500mm；Vortex
Distributor (5) is made up of central tube (10), outer barrel (11) and blade (12)；Outer barrel (11) section is circle, and a diameter of dw, dw takes
Value scope 1/2D~4/5D；Blade (12) plane is s with horizontal plane angle, and blade (12) upper end is r with horizontal plane angle；S's
Scope is 30 °~50 °, and the scope of r is 10 °~40 °；Blade (12) quantity is 6~72.
2. wet static dedusting demister according to claim 1, it is characterised in that：When counter-flow arrangement, vortex is removed
In the wet-esp port of export, its lower end is L2 away from positive plate upper end distance to day with fog (2)；The span of L2 is 10~30mm；
Vortex demister (2) is made up of central tube (10), outer barrel (11) and blade (12)；Outer barrel (11) a diameter of dc, dc spans
2/5D~1/2D；Blade (12) plane is s with horizontal plane angle, and blade (12) lower end is r with horizontal plane angle；The scope of s for-
30 °~-50 °, the scope of r is -10 °~-40 °；Blade (12) quantity is 6~72.
3. wet static dedusting demister according to claim 1, it is characterised in that：When down current arrangement, vortex is removed
In the wet-esp port of export, its upper end is L2 away from tubular anode plate (3) lower end distance to day with fog (2)；The span of L2 is 10
~30mm；Vortex demister (2) is made up of central tube (10), outer barrel (11) and blade (12)；Outer barrel (11) a diameter of dc, dc take
Value scope is 2/5D~1/2D；Blade (12) plane is s with horizontal plane angle, and blade (12) lower end is r with horizontal plane angle；s
Scope be -30 °~-50 °, the scope of r is -10 °~-40 °；Blade (12) quantity is 6~72.
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| CN201510394154.8A CN104923405B (en) | 2015-07-02 | 2015-07-02 | A kind of wet static dedusting demister |
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|---|---|---|---|
| CN201510394154.8A CN104923405B (en) | 2015-07-02 | 2015-07-02 | A kind of wet static dedusting demister |
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| CN104923405B true CN104923405B (en) | 2017-06-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105194934A (en) * | 2015-10-27 | 2015-12-30 | 浙江天地环保工程有限公司 | Demisting and dedusting device for wet chimney of coal-fired power plant |
| CN205599335U (en) * | 2015-12-29 | 2016-09-28 | 上海克莱德贝尔格曼机械有限公司 | Tubular pole defogging dust collector |
| CN105561722A (en) * | 2015-12-29 | 2016-05-11 | 上海克莱德贝尔格曼机械有限公司 | Honeycomb electrode demisting and dedusting apparatus |
| CN105562207A (en) * | 2016-02-02 | 2016-05-11 | 北京清新环境技术股份有限公司 | Tube-bundle dust and mist removal device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523614A (en) * | 1991-07-17 | 1993-02-02 | Hitachi Plant Eng & Constr Co Ltd | Wet type electric dust precipitator |
| CN2207228Y (en) * | 1994-09-03 | 1995-09-13 | 青岛市建材一厂 | Duster |
| CN201244515Y (en) * | 2008-05-22 | 2009-05-27 | 李志红 | Wet-type high-voltage electrostatic precipitation defroster |
| CN201295592Y (en) * | 2008-11-11 | 2009-08-26 | 广东佳德环保科技有限公司 | Desulfurizer device integrating ammonia absorption and electric defogging |
| CN202983891U (en) * | 2012-12-28 | 2013-06-12 | 福建龙净环保股份有限公司 | Vertical type wet electrostatic precipitator and air outlet channel thereof |
| CN203598936U (en) * | 2013-11-26 | 2014-05-21 | 广州广一大气治理工程有限公司 | Efficient anti-corrosive wet type electric derusting and demisting device |
| CN103817003A (en) * | 2014-02-28 | 2014-05-28 | 天津机科环保科技有限公司 | Vertical tube type high-pressure wet-type precision static dust remover |
| CN204122244U (en) * | 2014-08-20 | 2015-01-28 | 浙江天蓝环保技术股份有限公司 | A kind of wet electrical dust precipitator and comprise the electric precipitation desulfurizer of this wet electrical dust precipitator |
| CN204866201U (en) * | 2015-07-02 | 2015-12-16 | 浙江天地环保工程有限公司 | Wet -type electrostatic precipitator defogging device |
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