CN104525374A - Device for improving efficiency of vertical-flow wet electrostatic dust remover - Google Patents
Device for improving efficiency of vertical-flow wet electrostatic dust remover Download PDFInfo
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- CN104525374A CN104525374A CN201410838739.XA CN201410838739A CN104525374A CN 104525374 A CN104525374 A CN 104525374A CN 201410838739 A CN201410838739 A CN 201410838739A CN 104525374 A CN104525374 A CN 104525374A
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Abstract
The invention provides a device for improving the efficiency of a vertical-flow wet electrostatic dust remover. The device is used for improving the distribution uniforming effect of a flow field in the body of the electrostatic dust remover, reducing the number of short flue gas flow regions and enhancing the dust removal efficiency of the electrostatic dust remover. A gas flow distribution uniforming plate is adopted according to the distribution characteristic of the gas flow at the entrance of an electric field so that the gas flow can be distributed uniformly in the electric field and the flow field can be optimized. In addition, due to the additional arrangement of internal components including a flow stop ring plate, a flow stop plate, a flow guide ring plate and a flow collection tank, the number of short flue gas flow regions in the electric field can be reduced. The device provided by the invention has the advantages that the additionally arranged internal components are easy to manufacture and are easy to install, increase of resistance to a system is small, the flow filed in the electric field can be distributed uniformly, the number of short flue gas flow regions can be reduced, the flue gas can be charged uniformly, a small amount of flue gas can escape, and the purpose of removing dust efficiently can be achieved.
Description
Technical field
The present invention relates to electric precipitation field, what be specifically related to a kind of vertical current wet electrical dust precipitator carries effect device.
Background technology
Developing rapidly of modern industry also brings serious environmental pollution while offering convenience to the mankind, and atmosphere pollution is the main themes in various environmental pollution, and the pollutant produced by coal-burning power plant and Industrial Boiler is the main source of air environmental pollution.Along with Environmental protection is more and more paid attention to, fine flue dust, SO
3agenda that the reduction of discharging of the pollutant that acid mist, mercury etc. exist with aerosol form is referred, new " ambient air quality " of country also includes PM2.5 in ambient air quality in the lump simultaneously.Thus, flyash fine grained, gypsum fine grained and SO how is effectively alleviated
3on the impact of environment, and effective harm reducing PM2.5 fine particulates and health is brought, become the task of top priority that current atmosphere pollution administers industry.
For solving the problem and realizing the advanced purification technology of flue dust, need consider to set up wet electrical dust precipitator after desulfurizing tower.Wet electrical dust precipitator can remove the harmful substance such as dirt, acid mist, water droplet, aerosol, PM2.5 in flue gas, is the effective equipment administering atmospheric dust pollution.Be with a wide range of applications in coal-burning power plant and the field such as chemical industry, metallurgy, will huge economical, societal benefits be produced.
Vertical current wet electrical dust precipitator is the one of wet electrical dust precipitator, it has many pollution synergetic and administers, saves land, economizes on water, circulates and the characteristic of minimum discharge, lectotype selection is little, investment cost is low, this is concerning the flue gas pollutant terminal processes after the existing wet desulphurization of most of power plant newly-built and transformation project, there is advantageous advantage, for site condition, Technical Economy, it is comparatively ideal selection scheme.
But strict gradually along with national environmental standard, requires that electric cleaner outlet drain dust content drops to 5mg/Nm
3below, some areas and the higher enterprise of environmental requirement even require lower, therefore for reaching the ultra-clean discharge of pollutant, needing to optimize existing vertical current wet electrical dust precipitator technology further, improving its efficiency of dust collection.
The distribution of vertical current wet cottrell flow field is one of very important factor affecting ESP Efficiency, if air velocity distribution skewness in electric field, dust in electric field will be caused charged uneven, thus affect efficiency of dust collection, thus to ensure that in electric field, air flow method flow field that is even and then uniform incoming flow flue gas is very important.
Except the Flow Field Distribution in electric field can affect except the efficiency of dust collection of electric precipitation, in electric field, the short flow phenomenon of flue gas is also one of very important factor affecting ESP Efficiency.Vertical current wet electrical dust precipitator inner anode plate adopts the positive plate control of dust face arrangement that replace parallel with cathode line with cathode line, and positive plate is vertically placed consistent with flue gas circulating direction.In electric field section because the electric discharge of cathode line, after the PM2.5 fine dust, aerosol etc. that contain are charged under the effect of electric field force, trapped by positive plate in flue gas; But the vertical current wet electrical dust precipitator of routine (as Fig. 4,9) is the electric discharge safety ensureing cathode line and tower wall, around the tower wall and electric field subregion septal pathways cathode line and positive plate are not set, having the region of small part in the region of tower wall and electric field subregion septal pathways does not unavoidably gather dust in scope at electric field, but for ensureing and improving efficiency of dust collection, the exhaust gas volumn escaped in this subregion must be reduced.
What the present invention is directed to that above vertical current wet electrical dust precipitator Problems existing proposes a kind of vertical current wet electrical dust precipitator carries effect device.
Summary of the invention
What the object of this invention is to provide a kind of vertical current wet electrical dust precipitator carries effect device, improves flue gas even distribution effect in electric cleaner, reduces the short stream region of flue gas, reduces leak rate, thus improves the efficiency of dust collection of electric cleaner.The intrinsic Flow Field Distribution of electric cleaner optimized by airflow uniform distribution plate in the present invention, and collaborative choked flow ring flat-plate, V-arrangement spoiler, conflux tank and guide ring plate structure, reach the object of Improvement of dust removal simultaneously.。
Technical scheme provided by the invention is as follows:
A kind of vertical current wet electrical dust precipitator carry effect device, described vertical current wet electrical dust precipitator comprises smoke inlet section, electric field section, exhanst gas outlet section, positive plate and cathode line is provided with in described electric field section, and comprising multiple electric field subregion in described electric field section, multiple positive plate lower ends of each described electric field subregion are provided with the water leg be connected;
Described effect device of carrying comprises:
At least one deck airflow uniform distribution plate, it is arranged on the smoke inlet section of described vertical current wet electrical dust precipitator, flows uniformly through described electric field section for guiding flue gas;
Reducing-flow structure, it comprises the choked flow ring flat-plate and spoiler that are arranged on described positive plate upper end;
Wherein, described choked flow ring flat-plate is arranged at the circular passage place between the tower wall of described electric field section and described vertical current wet electrical dust precipitator, and stops that flue gas passes through from this circular passage;
Described spoiler is arranged at the passage area place of adjacent described electric field by stages, and stops that flue gas passes through from this passage;
Flow-guiding structure, it comprises the water conservancy diversion ring flat-plate be arranged on below described positive plate and the tank that confluxes being arranged on described positive plate lower end;
Wherein, the outer shroud of described water conservancy diversion ring flat-plate is connected with the tower wall of described vertical current wet electrical dust precipitator, and interior hoop tower body center position extends, and the flue gas near tower wall place is converged in the middle part of tower body;
The described tank that confluxes is arranged at the passage area place of adjacent described electric field by stages, and stops that flue gas passes through from this passage, and described in the tank that confluxes be connected with described water leg.
Preferably, described airflow uniform distribution plate is the orifice plate becoming percent opening;
When the tower body of described vertical current wet electrical dust precipitator is when being circular perpendicular to the cross section on flue gas flow direction direction, the percent opening of described airflow uniform distribution plate successively decreases from the tower wall of tower body to tower body center.
Preferably, described airflow uniform distribution plate is the orifice plate becoming percent opening;
When the tower body of described vertical current wet electrical dust precipitator is when being rectangle perpendicular to the cross section on flue gas flow direction direction, described airflow uniform distribution plate is assembled by the plate of the different percent opening of polylith; The airflow uniform distribution packing free ratio at the region place of a pair tower wall pointed by the end near described positive plate is minimum, and the airflow uniform distribution packing free ratio of tower body central area takes second place, and the airflow uniform distribution packing free ratio in other regions is the highest.
Preferably, described airflow uniform distribution plate is assembled by one or more in annular slab or fanning strip or triangular plate or rectangular slab.
Preferably, the hole that described airflow uniform distribution plate is offered is circular or polygon, and the arrangement mode in this hole is equidistant array or equilateral triangle array.
Preferably, the outer shroud of described choked flow ring flat-plate is connected with the tower wall of described vertical current wet electrical dust precipitator, and the inner ring of described choked flow ring flat-plate is connected with outermost described positive plate;
Described choked flow ring flat-plate is covered in the top of described circular passage.
Preferably, described spoiler is V-arrangement spoiler, and described V-arrangement spoiler is inverted in the passage area place of adjacent described electric field by stages, and its tip is upper.
Preferably, described water conservancy diversion ring flat-plate is the ring flat-plate be obliquely installed, and outer shroud side is higher than inner ring side.
Preferably, the angle between described water conservancy diversion ring flat-plate and tower wall is 75-80 °.
Carry effect device by vertical current wet electrical dust precipitator provided by the invention, following at least one beneficial effect can be brought:
1. airflow uniform distribution plate is set at the smoke inlet section place of vertical current wet electrical dust precipitator, air flow method in wet electrical dust precipitator can be made even, play the object of the Flow Field Distribution optimizing electric cleaner.Air flow method affects one of very important factor of ESP Efficiency, and therefore in electric cleaner, air flow method is more even, and flue dust is charged more even, and dust removing effects is better.According to air flow method characteristic in electric cleaner, airflow uniform distribution plate adopts the design becoming percent opening, air flow method in electric cleaner can be made more even, thus promote efficiency of dust collection.Such as when the tower body of vertical current wet electrical dust precipitator is when being circular perpendicular to the cross section on flue gas flow direction direction, the percent opening of airflow uniform distribution plate successively decreases from the tower wall of tower body to tower body center; When the tower body of vertical current wet electrical dust precipitator is when being rectangle perpendicular to the cross section on flue gas flow direction direction, airflow uniform distribution plate is assembled by the plate of the different percent opening of polylith.
2. the short stream of wet electrical dust precipitator flue gas of plate line type structure is unavoidable, but for promoting the efficiency of dust collection of electric cleaner, reaches the object of ultra-clean discharge, and reduce the short stream of flue gas in electric cleaner, it is required for reducing leak rate.The polylith spoiler that the present invention is arranged in electric field section, the tank that confluxes, water conservancy diversion ring flat-plate can play the effect of flue gas choked flow, water conservancy diversion, effective guiding is in the middle part of the flue gas flow direction tower body of tower wall, and stop that flue gas flows through from the circular passage between electric field section and tower wall, stop that flue gas flows through from the passage of adjacent electric field by stages, thus reduce the short stream of flue gas to a certain extent, reduce leak rate, reach the object of high-effective dust-removing.
Accompanying drawing explanation
Below by clearly understandable mode, accompanying drawings preferred embodiment, is further described a kind of above-mentioned characteristic carrying effect device of vertical current wet electrical dust precipitator, technical characteristic, advantage and implementation thereof.
The front view of a kind of embodiment of Fig. 1 to be cross section be circular wet electrical dust precipitator;
The side view of a kind of embodiment of Fig. 2 to be cross section be circular wet electrical dust precipitator;
The airflow uniform distribution packing free ratio layout drawing of a kind of embodiment of Fig. 3 to be cross section be circular wet electrical dust precipitator;
The flue gas short stream regional cross section figure of a kind of embodiment of Fig. 4 to be cross section be circular wet electrical dust precipitator;
The spoiler Smoke prevention of a kind of embodiment of Fig. 5 to be cross section be circular wet electrical dust precipitator is breathed hard flow structure top view;
The front view of a kind of embodiment of Fig. 6 to be cross section be square wet electrical dust precipitator;
The side view of a kind of embodiment of Fig. 7 to be cross section be square wet electrical dust precipitator;
The airflow uniform distribution packing free ratio layout drawing of a kind of embodiment of Fig. 8 to be cross section be square wet electrical dust precipitator;
The flue gas short stream regional cross section figure of a kind of embodiment of Fig. 9 to be cross section be square wet electrical dust precipitator;
The spoiler Smoke prevention of a kind of embodiment of Figure 10 to be cross section be square wet electrical dust precipitator is breathed hard flow structure top view.
Drawing reference numeral illustrates:
1-smoke inlet section; 2-electric field section; 3-exhanst gas outlet section; 4-positive plate; 401-positive plate upper end; 402-positive plate lower end; 5-airflow uniform distribution plate; 6-water leg; 7-conflux tank; 8-water conservancy diversion ring flat-plate; 9-choked flow ring flat-plate; 10-V-arrangement spoiler; 11-electric field subregion septal pathways; Circular passage between 12-electric field Duan Yuta wall.
Detailed description of the invention
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, contrast accompanying drawing is illustrated the specific embodiment of the present invention below.Apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, and obtain other embodiment.
For making simplified form, only schematically show part related to the present invention in each figure, they do not represent its practical structures as product.In addition, be convenient to make simplified form understand, there are the parts of identical structure or function in some figure, only schematically depict one of them, or only marked one of them.In this article, " one " not only represents " only this ", also can represent the situation of " more than one ".
In embodiments of the invention one, with reference to the vertical current wet electrical dust precipitator that the cross section shown in Fig. 1-5 is circular, vertical current wet electrical dust precipitator comprises smoke inlet section 1, electric field section 2, exhanst gas outlet section 3, positive plate 4 and cathode line is provided with in electric field section 2, and in electric field section 2, comprising multiple electric field subregion, multiple positive plate lower ends 402 of each electric field subregion are provided with the water leg 6 be connected.Be provided with in vertical current wet electrical dust precipitator and carry effect device, namely the inner member of air flow method is affected, specifically comprise one deck airflow uniform distribution plate 5, be located at the choked flow ring flat-plate 9 at positive plate upper end 401 place and spoiler (the V-arrangement spoiler 10 in figure), and be arranged on water conservancy diversion ring flat-plate below positive plate 48 and be arranged on the tank 7 that confluxes of positive plate lower end 402.Wherein, airflow uniform distribution plate 5 is arranged on smoke inlet section 1 place of vertical current wet electrical dust precipitator, and for guiding flue gas to flow uniformly through electric field section 2.Choked flow ring flat-plate 9 is arranged at circular passage 12 place between electric field Duan Yuta wall, and stops that flue gas passes through from this circular passage; V-arrangement spoiler 10 is arranged at adjacent electric field subregion septal pathways 11 region place, and stops that flue gas passes through from this passage; The outer shroud of water conservancy diversion ring flat-plate 8 is connected with the tower wall of vertical current wet electrical dust precipitator, and interior hoop tower body center position extends, and the flue gas near tower wall place is converged in the middle part of tower body; The tank 7 that confluxes is arranged at adjacent electric field subregion septal pathways 11 region place, and stops that flue gas passes through from this passage, and the tank 7 that confluxes is connected with water leg 6.
In the prior art, after flue gas enters electric cleaner from the smoke inlet section of wet electrical dust precipitator bottom, due to the impact of reducer (needing through expanding part from gas approach to electric field section), airflow uniform distribution in electric cleaner is poor, is about 0.6 by the root-mean-square value that found that air flow method in electric cleaner of numerical simulation.For ensureing the efficiency of dust collection of electric cleaner, as shown in Figure 1, 2, set up airflow uniform distribution plate 5 in smoke inlet section.
Set up airflow uniform distribution plate 5 as shown in Figure 3 in entrance reducer after, flue gas passes through airflow uniform distribution plate 5 from smoke inlet section 1, in electric cleaner, the root-mean-square value of air flow method can reach about 0.10, and after setting up airflow uniform distribution plate 5, the Flow Field Distribution in electric cleaner is obviously optimized.In figure, airflow uniform distribution plate 5 is porous plate, and percent opening span is 40% ~ 60%, and the structure of perforate is square opening.As shown in Figure 3, the percent opening near the airflow uniform distribution plate 5 in Ta Bi region is higher, then declines gradually to tower center successively.Percent opening shown in figure is from 60% dropping to 55%, again to 50%, again to 45%, the open porosity value selected by this variation pattern is a kind of embodiment, and practical application is not limited thereto.
As shown in Fig. 1,2,4, electric discharge safety considered by general vertical current electric cleaner, all can allow between cathod system (electric field section) and tower wall and keep certain safe distance; Simultaneously for the electric cleaner that smoke treatment amount is larger, all considering switched-mode power supply, for ensureing the electric discharge safety of cathod system, between cathod system and cathod system, also can reserve certain safe distance.The maintenance of cathod system safe distance, adjacent electric field subregion septal pathways 11 can be caused unavoidably, and the partial fume of circular passage 12 between electric field Duan Yuta wall is not within the scope of effective control of dust of electric field, if do not taken measures to form short stream, cause part ash-laden gas to escape, reduce efficiency of dust collection.
For ensureing the efficiency of dust collection of electric field and improving the efficiency of dust collection of electric field further, as Fig. 1,2,5 be shown in Electric Field in ESP section 2 positive plate lower end 402 set up the tank 7 that confluxes, below positive plate 4, set up water conservancy diversion ring flat-plate 8, set up choked flow ring flat-plate 9, V-arrangement spoiler 10 in positive plate upper end 401.From electric cleaner smoke inlet section 1 by the flue gas after airflow uniform distribution plate 5, enter Electric Field in ESP section 2, under the effect of positive plate lower end 402 water conservancy diversion ring flat-plate 8, the diversed ring flat-plate of flue gas of the circular passage 12 between electric field Duan Yuta wall changes direction, close in the middle part of electric cleaner, the flue gas in the region, circular passage 12 entered between electric field Duan Yuta wall is reduced; The tank 7 that simultaneously will conflux is arranged on below positive plate lower end 402 electric field subregion septal pathways 11, the flue gas of incoming flow cannot be escaped from electric field subregion septal pathways 11, and arrived in the electric field of both sides; Set up choked flow ring flat-plate 9 in electric field positive plate upper end 401 near Ta Bi region further, ensure that the flue gas at circular passage 12 place between electric field Duan Yuta wall cannot form short stream, restriction incoming flow flue gas passes through from this region; Above electric field positive plate upper end 401 electric field subregion septal pathways 11, set up V-arrangement spoiler 10 further, ensure cannot form the short stream of flue gas in electric field subregion septal pathways 11, restriction incoming flow flue gas passes through from this region.
In embodiments of the invention two, with reference to the vertical current wet electrical dust precipitator that the cross section shown in Fig. 6-10 is rectangle, vertical current wet electrical dust precipitator comprises smoke inlet section 1, electric field section 2, exhanst gas outlet section 3, positive plate 4 and cathode line is provided with in electric field section 2, and in electric field section 2, comprising multiple electric field subregion, multiple positive plate lower ends 402 of each electric field subregion are provided with the water leg 6 be connected.Be provided with in vertical current wet electrical dust precipitator and carry effect device, namely the inner member of air flow method is affected, specifically comprise one deck airflow uniform distribution plate 5, be located at the choked flow ring flat-plate 9 at positive plate upper end 401 place and spoiler (the V-arrangement spoiler 10 in figure), and be arranged on water conservancy diversion ring flat-plate below positive plate 48 and be arranged on the tank 7 that confluxes of positive plate lower end 402.Wherein, airflow uniform distribution plate 5 is arranged on smoke inlet section 1 place of vertical current wet electrical dust precipitator, and for guiding flue gas to flow uniformly through electric field section 2.Choked flow ring flat-plate 9 is arranged at circular passage 12 place between electric field Duan Yuta wall, and stops that flue gas passes through from this circular passage; V-arrangement spoiler 10 is arranged at adjacent electric field subregion septal pathways 11 region place, and stops that flue gas passes through from this passage; The outer shroud of water conservancy diversion ring flat-plate 8 is connected with the tower wall of vertical current wet electrical dust precipitator, and interior hoop tower body center position extends, and the flue gas near tower wall place is converged in the middle part of tower body; The tank 7 that confluxes is arranged at adjacent electric field subregion septal pathways 11 region place, and stops that flue gas passes through from this passage, and the tank 7 that confluxes is connected with water leg 6.
As shown in Figure 6,7, flue gas enters electric cleaner from bottom electric cleaner smoke inlet section 1, due to the impact of reducer, in electric cleaner, airflow uniform distribution is poor, be about 0.6 by the root-mean-square value that found that air flow method in electric cleaner of numerical simulation, for ensureing that the efficiency of dust collection of electric cleaner need set up airflow uniform distribution plate 5 at entrance.
After airflow uniform distribution plate 5 is as shown in Figure 8 set up in the junction of smoke inlet and electric field section 2, flue gas passes through airflow uniform distribution plate 5 from entrance, in electric cleaner, the root-mean-square value of air flow method can reach about 0.07, and after setting up airflow uniform distribution plate 5, the Flow Field Distribution in electric cleaner is obviously optimized.In figure, airflow uniform distribution plate 5 is porous plate, and percent opening span is 40% ~ 50%, and the structure in the hole offered can adopt square opening.With reference to Fig. 8, airflow uniform distribution plate is assembled by the plate of the different percent opening of polylith; Such as, in figure, the airflow uniform distribution packing free ratio minimum (40%) at the region place of a pair tower wall (the tower wall on left side and right side) pointed by the end near positive plate, the airflow uniform distribution packing free ratio of tower body central area takes second place (45%), the airflow uniform distribution packing free ratio the highest (50%) in other regions.
As shown in Fig. 6,7,9,10, electric discharge safety considered by general vertical current electric cleaner, all can make to keep certain safe distance between cathod system and tower wall; Simultaneously for the electric cleaner that smoke treatment amount is larger, all considering switched-mode power supply, for ensureing the electric discharge safety of cathod system, between the cathod system in adjacent electric field district, also can reserve certain safe distance; The maintenance of cathod system safe distance, can cause this electric field subregion septal pathways 11 unavoidably, and the partial fume of circular passage 12 between electric field Duan Yuta wall is not within the scope of the effective control of dust of electric field, if do not taken measures to form short stream, cause part ash-laden gas to escape, reduce efficiency of dust collection.
For ensureing the efficiency of dust collection of electric field and improving the efficiency of dust collection of electric field further, as Fig. 6,7,10 be shown in Electric Field in ESP section 2 positive plate lower end 402 and set up the tank 7 that confluxes, set up water conservancy diversion ring flat-plate 8 in the below of positive plate 4, set up choked flow ring flat-plate 9, V-arrangement spoiler 10 in positive plate upper end 401.From electric cleaner smoke inlet section 1 by the flue gas after airflow uniform distribution plate 5, enter Electric Field in ESP section 2, under the effect of positive plate lower end 402 water conservancy diversion ring flat-plate 8, the diversed ring flat-plate 8 of flue gas of the circular passage 12 between electric field Duan Yuta wall changes direction, close in the middle part of electric cleaner, the flue gas of the circular passage 12 entered between electric field Duan Yuta wall is reduced; The tank 7 that simultaneously will conflux is arranged on below positive plate lower end 402 electric field subregion septal pathways 11, the flue gas of incoming flow cannot be escaped from subregion septal pathways 11, and arrived in the electric field of both sides; Choked flow ring flat-plate 9 is set up in circular passage 12 further between the electric field Duan Yuta wall of electric field positive plate upper end 401, ensures that the flue gas of the circular passage 12 between electric field Duan Yuta wall cannot form short stream, and restriction incoming flow flue gas passes through from this region; Above electric field positive plate upper end 401 electric field subregion septal pathways 11, set up V-arrangement spoiler 10 further, ensure cannot form the short stream of flue gas in electric field subregion septal pathways 11, restriction incoming flow flue gas passes through from this region.
In above-mentioned two embodiments, wet electrical dust precipitator flue gas all adopts bottom in and top out mode, but also can adopt upper entering and lower leaving mode, and as being upper entering and lower leaving mode, its internal structure has little adjustment.
(1) the airflow uniform distribution plate of deduster entrance, setting position need be changed in the reducer of top or deduster entrance and electric field section junction, arrange one or more layers, the distribution of percent opening and percent opening needs adjustment, this Suitable content is determined by numerical simulation.
(2) deduster choked flow ring flat-plate, V-arrangement spoiler and conflux guiding gutter can holding structure constant, removed by water conservancy diversion ring flat-plate, head tower wall near zone sets up one deck choked flow ring flat-plate more under the electric field.
It should be noted that, above-described embodiment just gives two kinds of forms of the change percent opening of airflow uniform distribution plate, in other embodiments, the change percent opening of airflow uniform distribution plate also can design the percent opening of uniform board isoplanar zones of different according to the characteristic of the plane air flow method of its installation; Described airflow uniform distribution plate can also be assembled by difform module, realizes modular construction.
It should be noted that in other embodiments, airflow uniform distribution plate also can be set to multilayer.
It should be noted that V-arrangement spoiler is inverted in the passage area place of adjacent described electric field by stages, its tip is upper, and V-arrangement spoiler is the more excellent form of one of spoiler, and other embodiments are not limited to this.
Airflow uniform distribution plate is assembled by one or more in annular slab or fanning strip or triangular plate or rectangular slab.
The hole that airflow uniform distribution plate is offered is circular or polygon (triangle or rectangle etc.), and the arrangement mode in this hole is equidistant array or equilateral triangle array.
Preferably, choked flow ring flat-plate can be arranged in the following way, and its outer shroud is connected with the tower wall of vertical current wet electrical dust precipitator, and inner ring is connected with the outermost positive plate of electric field section.And choked flow ring flat-plate can be covered in above the circular passage between electric field section and tower wall.
Preferably, with reference to Fig. 1,2,6,7, the ring flat-plate of water conservancy diversion ring flat-plate 8 for being obliquely installed, and outer shroud side (side be connected with tower wall) is higher than inner ring side, the angle between water conservancy diversion ring flat-plate and tower wall is 75-80 °.
It should be noted that above-described embodiment all can independent assortment as required.The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a vertical current wet electrical dust precipitator carry effect device, described vertical current wet electrical dust precipitator comprises smoke inlet section, electric field section, exhanst gas outlet section, positive plate and cathode line is provided with in described electric field section, and comprising multiple electric field subregion in described electric field section, multiple positive plate lower ends of each described electric field subregion are provided with the water leg be connected;
It is characterized in that, described in carry effect device comprise:
At least one deck airflow uniform distribution plate, it is arranged on the smoke inlet section of described vertical current wet electrical dust precipitator, flows uniformly through described electric field section for guiding flue gas;
Reducing-flow structure, it comprises the choked flow ring flat-plate and spoiler that are arranged on described positive plate upper end;
Wherein, described choked flow ring flat-plate is arranged at the circular passage place between the tower wall of described electric field section and described vertical current wet electrical dust precipitator, and stops that flue gas passes through from this circular passage;
Described spoiler is arranged at the passage area place of adjacent described electric field by stages, and stops that flue gas passes through from this passage;
Flow-guiding structure, it comprises the water conservancy diversion ring flat-plate be arranged on below described positive plate and the tank that confluxes being arranged on described positive plate lower end;
Wherein, the outer shroud of described water conservancy diversion ring flat-plate is connected with the tower wall of described vertical current wet electrical dust precipitator, and interior hoop tower body center position extends, and the flue gas near tower wall place is converged in the middle part of tower body;
The described tank that confluxes is arranged at the passage area place of adjacent described electric field by stages, and stops that flue gas passes through from this passage, and described in the tank that confluxes be connected with described water leg.
2. vertical current wet electrical dust precipitator according to claim 1 carry effect device, it is characterized in that:
Described airflow uniform distribution plate is the orifice plate becoming percent opening;
When the tower body of described vertical current wet electrical dust precipitator is when being circular perpendicular to the cross section on flue gas flow direction direction, the percent opening of described airflow uniform distribution plate successively decreases from the tower wall of tower body to tower body center.
3. vertical current wet electrical dust precipitator according to claim 1 carry effect device, it is characterized in that:
Described airflow uniform distribution plate is the orifice plate becoming percent opening;
When the tower body of described vertical current wet electrical dust precipitator is when being rectangle perpendicular to the cross section on flue gas flow direction direction, described airflow uniform distribution plate is assembled by the plate of the different percent opening of polylith; The airflow uniform distribution packing free ratio at the region place of a pair tower wall pointed by the end near described positive plate is minimum, and the airflow uniform distribution packing free ratio of tower body central area takes second place, and the airflow uniform distribution packing free ratio in other regions is the highest.
4. the vertical current wet electrical dust precipitator according to any one of claim 1-3 carry effect device, it is characterized in that:
Described airflow uniform distribution plate is assembled by one or more in annular slab or fanning strip or triangular plate or rectangular slab.
5. the vertical current wet electrical dust precipitator according to any one of claim 1-3 carry effect device, it is characterized in that:
The hole that described airflow uniform distribution plate is offered is circular or polygon, and the arrangement mode in this hole is equidistant array or equilateral triangle array.
6. the vertical current wet electrical dust precipitator according to any one of claim 1-3 carry effect device, it is characterized in that:
The outer shroud of described choked flow ring flat-plate is connected with the tower wall of described vertical current wet electrical dust precipitator, and the inner ring of described choked flow ring flat-plate is connected with outermost described positive plate;
Described choked flow ring flat-plate is covered in the top of described circular passage.
7. the vertical current wet electrical dust precipitator according to any one of claim 1-3 carry effect device, it is characterized in that:
Described spoiler is V-arrangement spoiler, and described V-arrangement spoiler is inverted in the passage area place of adjacent described electric field by stages, and its tip is upper.
8. the vertical current wet electrical dust precipitator according to any one of claim 1-3 carry effect device, it is characterized in that:
Described water conservancy diversion ring flat-plate is the ring flat-plate be obliquely installed, and outer shroud side is higher than inner ring side.
9. vertical current wet electrical dust precipitator according to claim 8 carry effect device, it is characterized in that: the angle between described water conservancy diversion ring flat-plate and tower wall is 75-80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838739.XA CN104525374B (en) | 2014-12-26 | 2014-12-26 | Vertical current wet electrical dust precipitator carry effect device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838739.XA CN104525374B (en) | 2014-12-26 | 2014-12-26 | Vertical current wet electrical dust precipitator carry effect device |
Publications (2)
| Publication Number | Publication Date |
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| CN104525374A true CN104525374A (en) | 2015-04-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888964A (en) * | 2015-06-24 | 2015-09-09 | 河北安维环境工程有限公司 | Wet-type high-pressure water-film electrostatic precipitator |
| CN105498971A (en) * | 2016-01-06 | 2016-04-20 | 上海超清环保科技有限公司 | Airflow distribution system applied to wet electrostatic dust collector |
| CN106269254A (en) * | 2016-10-29 | 2017-01-04 | 无锡华光新动力环保科技股份有限公司 | A kind of gas-liquid separation device for wet electric precipitation |
| CN109261357A (en) * | 2018-10-17 | 2019-01-25 | 浙江德创环保科技股份有限公司 | A kind of wet electrical dust precipitator |
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| GB467823A (en) * | 1935-12-19 | 1937-06-21 | Whessoe Foundry And Engineerin | Improvements in or relating to the electrical precipitation of suspended particles from gases |
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| CN102626672A (en) * | 2012-04-13 | 2012-08-08 | 宜兴市化工成套设备有限公司 | Improved electroconductive glass fiber reinforced plastic electric demister |
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| CN203764408U (en) * | 2014-04-15 | 2014-08-13 | 刘海丽 | Wet multi-pipe dust removal device |
| CN204396165U (en) * | 2014-12-26 | 2015-06-17 | 上海龙净环保科技工程有限公司 | Vertical current wet electrical dust precipitator carry effect device |
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| GB467823A (en) * | 1935-12-19 | 1937-06-21 | Whessoe Foundry And Engineerin | Improvements in or relating to the electrical precipitation of suspended particles from gases |
| GB676638A (en) * | 1948-08-18 | 1952-07-30 | Research Corp | Improvements in or relating to electrical precipitators |
| CN102626672A (en) * | 2012-04-13 | 2012-08-08 | 宜兴市化工成套设备有限公司 | Improved electroconductive glass fiber reinforced plastic electric demister |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888964A (en) * | 2015-06-24 | 2015-09-09 | 河北安维环境工程有限公司 | Wet-type high-pressure water-film electrostatic precipitator |
| CN105498971A (en) * | 2016-01-06 | 2016-04-20 | 上海超清环保科技有限公司 | Airflow distribution system applied to wet electrostatic dust collector |
| CN106269254A (en) * | 2016-10-29 | 2017-01-04 | 无锡华光新动力环保科技股份有限公司 | A kind of gas-liquid separation device for wet electric precipitation |
| CN109261357A (en) * | 2018-10-17 | 2019-01-25 | 浙江德创环保科技股份有限公司 | A kind of wet electrical dust precipitator |
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| CN104525374B (en) | 2016-09-07 |
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