CN204620215U - A kind of wet electrical dust precipitator anode - Google Patents
A kind of wet electrical dust precipitator anode Download PDFInfo
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- CN204620215U CN204620215U CN201520155371.7U CN201520155371U CN204620215U CN 204620215 U CN204620215 U CN 204620215U CN 201520155371 U CN201520155371 U CN 201520155371U CN 204620215 U CN204620215 U CN 204620215U
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Abstract
The utility model provides a kind of wet electrical dust precipitator anode, belongs to field of environment engineering.This electric dust-collector anode is made up of more than one anode unit, and anode unit is hexagon alveolate texture, and six limits are 165 degree of circular arcs, and adjacent two sections of circular arcs form 120 degree of angles.This electric dust-collector anode is bamboo composite material.Bamboo composite material thickness is 0.5-2.5mm; Bamboo composite material is the composite formed after thin bamboo strips used for weaving top layer spraying plating high connductivity material Graphene.Not only corrosion resistance is strong, lightweight for the utility model, cost is low, its rigidity with generally use at present rigid anode---fiberglass is suitable; And pliability and corrosion resistance are considerably beyond flexible anode---the cloth bag generally used at present.It is too large that this bamboo composite material anode solves existing anode weight, and pedestal cannot load-bearing, and anode is easily corroded, and cost is high, the problem that energy consumption is large.And the anode after using can resource circulation utilization.
Description
Technical field
The utility model relates to field of environment engineering, refers to a kind of wet electrical dust precipitator anode especially.
Background technology
In recent years, air environmental pollution is more serious, also more and more causes the concern of people.Sulfur dioxide, nitrogen oxide and pellet are the main compositions of haze.The above two are gaseous contaminant, and they and fog combine, and allow sky become dusky instantaneously, and air quality is deteriorated.
On January 1st, 2015 rises, and new environmental law and steel industry New emission standard are formally implemented.At present, compared with new environmental requirement, also there is larger gap in the Environmental Protection Level of China's steel industry.The idea that iron and steel enterprise must really establish " environmental protection is enterprise's life line ", puts more money in environmental protection, and to attach most importance to enforcement environmental transformation with waste gas pollution control and treatment, General Promotion Environmental Protection Level, realizes Green Transformation.
In new standard, sintering machine head end (pelletizing) particle New emission standard is 50mg/m
3, special emission limit is 40mg/m
3, nearly all do not install wet electrical dust precipitator additional after sintering machine head end (pelletizing) wet desulphurization facility domestic at present, granular material discharged concentration generally can only reach 50 ~ 80mg/m
3, be difficult to up to standard.Iron and steel enterprise's raw material system, sintering machine tail, blast furnace casting factory, blast furnace ore tank, converter secondary flue gas and other particle New emission standard limit values producing dirt pits are at 10-30mg/m
3, but the design concentration of emission of most of iron and steel enterprises dust pelletizing system is at 30-50mg/m
3, as sintering machine tail, minority blast furnace still adopt electrostatic precipitator, part sack cleaner does not adopt the efficient dedusting technologies such as coated filter material, and part dust pelletizing system filtration velocity is too fast, causes concentration of emission higher.
Most iron and steel enterprise is in evolution, and along with the continuous expansion of scale, dust pelletizing system disposal ability is often difficult to meet needs of production, or during design in the early stage, flue gas trapping rate is just underestimated.Cause the volume of smoke produced in production process all cannot collect deduster purification, part flue dust escapes from factory building, causes uncontrollable discharge, affects environmental protection of enterprise image.In addition, factory road stock ground airborne dust, band conveyer corridor is not airtight, and transfer station does not arrange dust pelletizing system etc. and all causes a large amount of uncontrollable discharge of iron and steel enterprise.
Because the desulfuration efficiency of wet desulphurization is high, existing more than 500 platform sintering (pelletizing) equipment of current China adopt wet desulfurizing process, meet the requirement that the multi-pollutants such as fine particle, bioxin work in coordination with removal, must supporting wet electrical dust precipitator after desulfurization.
Current existing wet electrical dust precipitator has, as Chinese patent: CN202876595U " a kind of flexible anode wet scrubber "; CN203061287U " a kind of flexible anode wet scrubber of two-way water spray "; CN104028383A " a kind of wet electrical dust precipitator and using method thereof "; CN102872669A " a kind of flexible anode wet scrubber with hard clathrum "; CN204074267U " wet electrical dust precipitator anode unit ".
Current wet scrubber has flexible anode and rigid anode two kinds.Flexible anode is mainly based on sack cleaner, and sack cleaner exists easily to be electrically shocked to be worn, and is easily bonded at situation about hardening on cloth bag surface containing moist large dust.Rigid anode is mainly based on fiberglass, but fiberglass is expensive, and weight is large, perishable.
Utility model content
The utility model object is that current wet electrical dust precipitator anode weight is large, perishable, price is high in order to solve, easily breakdown, the easily problem such as sticky wall, and a kind of wet electrical dust precipitator anode of utility model.
This wet electrical dust precipitator anode is made up of more than one anode unit, and anode unit is hexagon alveolate texture, and six limits are 165 degree of circular arcs, and adjacent two sections of circular arcs form 120 degree of angles.The bamboo composite material that this anode unit is made up of thin bamboo strips used for weaving top layer coating Graphene is made, and thin bamboo strips used for weaving thickness is 0.5-2.5mm, and length is 2-10m, and width is 100-300mm; Graphene is coated with and is plated on two surfaces up and down of thin bamboo strips used for weaving, and is individual layer coating, and thin bamboo strips used for weaving is originally as the sheet having radian.
For can dust removing effects be ensured, and the stability of equipment, need to control the length of thin bamboo strips used for weaving.The length of thin bamboo strips used for weaving can not be too short, and the anode unit of the shorter needs of thin bamboo strips used for weaving is more, more increases duster system resistance, and increase energy consumption, and reduce its dust removing effects, the utility model thin bamboo strips used for weaving cut to lengthen is at more than 2m.Find through repetition test and computer simulation, thin bamboo strips used for weaving length can not more than 10m, once more than 10m, the vibration frequency of anode strengthens, and its stability exponentially declines.
The width of thin bamboo strips used for weaving is equally also the large factor ensureing wet electrical dust precipitator dust removing effects and stabilization of equipment performance.Find through repetition test and computer simulation, thin bamboo strips used for weaving width determines the size of discharge voltage, and width is too narrow, and the anode unit of needs can increase greatly, and the utility model selects minimum widith to be 100mm.Thin bamboo strips used for weaving width is too large, and discharge voltage can increase, and various hidden danger increases.Find through repetition test and computer simulation, when thin bamboo strips used for weaving width is more than 300mm, wet-esp peripheral electromagnetic field intensity significantly strengthens, and jumps to 15 during 300mm times, considers the safety of operator, selects thin bamboo strips used for weaving width threshold value 300mm.
The beneficial effect of technique scheme of the present utility model is as follows:
In such scheme, the utility model for current wet scrubber anode shortcoming and adopt bamboo composite material flexible anode, solve current flexible anode easily breakdown, laying dust effect is bad, and the problem easily hardened, simultaneously the utility model low price, lightweight, easy installation, not perishable, can recycle.
Accompanying drawing explanation
Fig. 1 is the structural representation of wet electrical dust precipitator anode of the present utility model.
Wherein: 1-anode unit.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The utility model is large, perishable for existing wet electrical dust precipitator anode weight, price is high, easily breakdown, easily the problem such as sticky wall, provides a kind of wet electrical dust precipitator anode.
As shown in Figure 1, be the structural representation of the utility model wet electrical dust precipitator anode.This wet electrical dust precipitator anode is made up of more than one anode unit 1, and anode unit 1 is hexagon alveolate texture, and six limits are 165 degree of circular arcs, and adjacent two sections of circular arcs form 120 degree of angles.Machine simulation and repetition test find as calculated: there is radian in six faces, and when remaining on 165 degree, the distribution of electric field the most evenly and voltage constant time electric field comparatively do not have to strengthen 1.5 times during radian yet, thus substantially increase dust removing effects.Flow field test also shows, when keeping 165 degree, the pressure loss of flue gas is also minimum, effectively reduces the energy consumption of system.And machine simulation and repetition test find 120 degree of angles of band radian as calculated, flue gas resistance herein can be less, and not easily form dust stratification dead angle herein, and it is convenient to rinse, thus improves efficiency of dust collection.
Positive and negative two faces of wet electrical dust precipitator anode thin bamboo strips used for weaving are coated with a layer graphene all uniformly, the resistivity of Graphene is minimum in known conductive material, and electron transfer rate is also the fastest, find through repetition test, scribble the thin bamboo strips used for weaving of single-layer graphene than the electric-field enhancing 5 times scribbling other conductive materials such as graphite, thus greatly reducing discharge voltage, energy consumption reduces effect clearly.
The isometric projection that six 165 degree of arc plates are spliced is an anode unit 1 by this wet electrical dust precipitator anode, and multiple anode unit 1 is combined into cellular, and six interior angles of honeycomb are 120 degree.The centre that cathode line with prickle is arranged on cellular anode is put, prickle in cathode line and the circular arc portion of positive plate are taken concerted action, increase strength of discharge, the Graphene on top layer is very large on the impact of electric-field intensity especially, increasing due to electric-field intensity makes the cathode and anode spacing of the cellular anode deduster that the distance between anode and cathode can be more traditional strengthen 5 times, thus substantially increases dust removing effects.After in wet electrical dust precipitator, gas is ionized, the grit great majority in flue gas deposit on bamboo composite material anode.When the dust on positive plate gathers certain thickness, laying dust effect declines, and now starts to do to rinse process, owing to there being flushing blind area in traditional wet electrical dust precipitator flushing process, easily cause dead angle, after long-play, a large amount of dirts can affect dust removing effects to a great extent.Between the utility model positive plate, angle is arc chord angle, has been not easy dust and dirt accumulation.The utility model wet electrical dust precipitator anode adopts bamboo composite material, and corrosion resistance is strong, lightweight, and therefore anode overall weight is relatively light, not only reduce the load-bearing of anode carrier, and bamboo composite material can reuse, save cost.Flowing containing in the passage of ash-laden gas between deduster anode that wet after wet desulphurization, due to High Pressure in passage, gas ionization can be there is, produce a large amount of free electron, negative ions, grit in flue gas in channel electric fields by these electronics and negative ions collision thus charged, grit charged subsequently moves to heteropole electrode under electric field action, thus the grit realized in flue gas is separated from the gas, reaches the object of Purge gas.The utility model anode is installed simple, once certain positive plate has damage, it is convenient to change.And the utility model positive plate is owing to there being natural radian, specific area is large, and intensity is high, and under the prerequisite ensureing dust removing effects, the resistance to corrosion of the utility model wet scrubber anode, anti-smoke-shock ability etc. are all better than traditional deduster anode.
In specific implementation process, formed wet electrical dust precipitator anode for 7 anode units 1, bamboo composite material thickness is 1mm, length is 5m, and width is 150mm, and the radian of every sheet thin bamboo strips used for weaving is 165 degree, angle between thin bamboo strips used for weaving is 120 degree, thin bamboo strips used for weaving upper and lower surface coating single-layer graphene.Cathode line is positioned at the centre of each anode unit from top to bottom, and length is 5m.The voltage that the present embodiment is selected is 3.5 ten thousand volts, and inlet flue gas reaches capacity humidity, and dustiness is 70mg/Nm
3, temperature is 60 DEG C.Flue gas is 150mm/s to the flow velocity in positive plate direction in anode passages, and therefore ash-laden gas just completes the absorption of grit on pole plate through 3.5s, and clean flue gas is discharged bottom deduster, and the dust content after discharge is 3mg/Nm
3, through 24 hours, after discharging, dust content reached 30mg/Nm
3.Start flusher, rinse 10 minutes, in flushing process, voltage is down to 1.5 ten thousand volts, when inlet flue gas condition is constant, can reach 35mg/Nm at flushing process middle outlet dust content
3.
From above embodiment, the utility model wet scrubber efficiency of dust collection is high, and energy consumption is little, and not perishable, cost is low, while meeting dust removal efficiency, alleviates deduster support load-bearing burden to the full extent.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a wet electrical dust precipitator anode, is characterized in that: be made up of more than one anode unit (1), and anode unit (1) is hexagon alveolate texture, and six limits are 165 degree of circular arcs, and adjacent two sections of circular arcs form 120 degree of angles.
2. a kind of wet electrical dust precipitator anode according to claim 1, is characterized in that: the bamboo composite material that described anode unit (1) is made up of thin bamboo strips used for weaving top layer coating Graphene is made.
3. a kind of wet electrical dust precipitator anode according to claim 1 and 2, is characterized in that: the thin bamboo strips used for weaving thickness forming described anode unit (1) is 0.5-2.5mm, and length is 2-10m, and width is 100-300mm; Graphene is coated with and is plated on two surfaces up and down of thin bamboo strips used for weaving, and is individual layer coating.
4. a kind of wet electrical dust precipitator anode according to claim 1 and 2, is characterized in that: the thin bamboo strips used for weaving of described anode unit (1) is the sheet itself having radian.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520155371.7U CN204620215U (en) | 2015-03-18 | 2015-03-18 | A kind of wet electrical dust precipitator anode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707731A (en) * | 2015-03-18 | 2015-06-17 | 北京科技大学 | Anode of wet electrical dust precipitator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707731A (en) * | 2015-03-18 | 2015-06-17 | 北京科技大学 | Anode of wet electrical dust precipitator |
| CN104707731B (en) * | 2015-03-18 | 2017-02-01 | 北京科技大学 | Anode of wet electrical dust precipitator |
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