CN206996186U - Electricity carries compound type dust remover - Google Patents

Abstract

The utility model belongs to chemical fertilizer industry dedusting technology field, is related to a kind of electricity and carries compound type dust remover.Including housing, ash bucket, electrostatic precipitation unit and bag-type dust unit, airflow uniform distribution device is provided with the inside of air inlet, prefiltering net is provided with the inside of airflow uniform distribution device, electrostatic precipitation unit and bag-type dust unit are successively set on the inside of prefiltering net, electrostatic precipitation unit includes cathod system, anode system and electromagnetism Percussion massage device, bag-type dust unit includes upper, in, lower three dust bags, blowback cleaning unit is additionally provided between bag-type dust unit and air outlet, blowback cleaning unit includes blower fan, hose adapter and air gathering plate, hose adapter connects blower fan and air gathering plate, air gathering plate is connected with enclosure interior.Dust removal process is carried out for a large amount of dust caused by boiler during chemical fertilizer production so that dusty gas caused by boiler can reach discharge standard after treatment.The maintenance cost of device is reduced, effectively reduces reentrainment of dust, improves efficiency of dust collection.

Description

Charged compound dust collector

technical field

The utility model belongs to the technical field of dust removal in the chemical fertilizer industry, and relates to a dust collector, in particular to a charge-load composite dust collector.

Background technique

During the fertilizer production process, boiler combustion generates a large amount of dust. At present, the contradiction between economic and social development and resource and environmental constraints has become increasingly prominent, and environmental protection is facing more and more severe challenges. One of the main factors causing air pollution is that a large amount of dust generated by the combustion of coal and other materials is directly or indirectly discharged into the atmosphere during the industrial production process of chemical fertilizers, thermal power, cement, and steel. Therefore, purification of pollutants discharged by thermal power, cement, steel and other industries is one of the main measures to prevent and control air pollution and improve environmental quality. Industrial dust collectors are an important environmental protection dust removal equipment widely used in countries all over the world.

The electrostatic bag compound dust collector is a kind of high-efficiency dust collector that combines the characteristics of electrostatic dust removal and bag dust removal organically. The dust removal advantages of the bag filter and the bag filter, and the combination of the two produce new performance advantages, which make up for the dust removal shortcomings of the electrostatic precipitator and the bag filter. The composite dust collector has the advantages of high efficiency, stability, low filter bag resistance, long service life, and small footprint. It is the main technical means for the future control of multi-pollutant co-processing such as fine particle dust, PM2.5, and heavy metal mercury. The pre-stage electrostatic precipitator area inherits the dust removal advantages of the first electric field of the electrostatic precipitator, and its dust removal efficiency and the effective area of the plate change in an exponential curve, which can collect most of the dust in the smoke, and the dust collection efficiency reaches 70-80%, and makes the flow The fine dust that has not been collected in the electrostatic precipitator area is ionized and charged. On the one hand, it greatly reduces the dust concentration entering the bag filter area, on the other hand, the powder cake deposited by the charged dust in the filter bag has low resistance characteristics, so as to meet the environmental protection requirements of the emission concentration of less than 30mg/Nm ³ and improve dust removal. effect on the overall performance of the device. Due to the charging effect, the deposition speed of dust on the filter bag is accelerated, and the dust with the same polarity repels each other, so that the dust particles deposited on the surface of the filter bag are arranged in an orderly manner, and the formed dust layer has good air permeability and porosity. High, good exfoliation. Therefore, the electric bag composite dust collector uses the charging effect to reduce the resistance of the dust collector and improve the cleaning efficiency, thereby improving the overall performance of the equipment.

The bag filter is a very good and efficient dust removal equipment in the chemical fertilizer industry, but the main problems of this equipment are large resistance during operation, high energy consumption, and short service life of the bag. In this case, there is an urgent need for a new type of dust removal equipment, which can overcome the shortcomings of the electrostatic precipitator and the bag filter, and greatly improve the dust collection efficiency.

Utility model content

The utility model proposes a new electric-load composite dust collector aiming at the problems of large resistance, high energy consumption, and short service life of the cloth bag.

In order to achieve the above-mentioned purpose, the technical scheme that the utility model adopts is,

A charge-load composite dust collector, comprising a dust collector body, the dust collector body includes a housing, an ash hopper, an electrostatic dust removal unit and a bag dust removal unit, the front end of the housing is provided with an air inlet, and the rear end is provided with an air outlet , the inner side of the air inlet is provided with an air distribution device, the inner side of the air distribution device is provided with a pre-filter, the electrostatic precipitator unit and the bag dust removal unit are sequentially arranged on the inner side of the pre-filter, and the electrostatic precipitator unit includes a cathode system, anode system and electromagnetic beater, the bag dust removal unit includes upper, middle and lower three dust bags, a back blow cleaning unit is also arranged between the bag dust removal unit and the air outlet, and the back blow cleaning unit It includes a fan, a flexible connecting pipe and an air collecting plate, the flexible connecting pipe communicates with the fan and the air collecting plate, and the wind collecting plate communicates with the inside of the casing.

Preferably, the pore size of the pre-filter is 2-3 microns.

Preferably, an ash hopper is provided under the electrostatic dust removal unit and the bag dust removal unit, and a dust collecting plate is arranged above the ash hopper.

Preferably, the dust collecting plate is provided with a plurality of dust collecting holes, and the shape of the dust collecting holes is cone or inverted triangle.

Compared with the prior art, the utility model has the advantages and positive effects that:

The utility model performs dedusting treatment on a large amount of dust produced by boilers in the process of chemical fertilizer production, so that the dust-containing gas produced by the boilers can reach the discharge standard after treatment. By improving the setting of the pre-filter, the dust can be pre-cleaned to a certain extent, the dust cleaning intensity of the electrostatic dust removal unit and the bag dust removal unit is reduced, and the service life of the latter is improved. The reasonable setting of the electrostatic dust removal unit and the bag dust removal unit reduces the maintenance cost of the device, and the setting of the dust collecting plate on the ash hopper effectively reduces the secondary dust and improves the dust removal efficiency. Therefore, the utility model has the advantages of reasonable structure, good dust removal effect, high work efficiency, cost saving, low maintenance cost, long service life of the device, simple operation, high degree of automation, clean exhaust gas, and has broad application prospects.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the utility model , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is the structural representation of the charge-loaded compound dust collector that embodiment 1 provides;

In the above figures, 1 dust collector body, 2 casing, 3 ash hopper, 4 electrostatic dust removal unit, 5 bag dust removal unit, 6 air inlet, 7 air outlet, 8 air flow uniform distribution device, 9 pre-filter, 10 cathode system , 11 anode system, 12 electromagnetic beater, 13 dust bag, 14 blowback cleaning unit, 15 fan, 16 soft connection, 17 wind collecting plate, 18 dust collecting plate.

detailed description

In order to understand more clearly the above purpose, features and advantages of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here. Therefore, the utility model is not limited to the specific details of the following disclosure EXAMPLE LIMITATIONS.

Embodiment 1, this embodiment as shown in Figure 1 provides the specific structure of the charge-loaded composite dust collector. This embodiment performs dust removal treatment on a large amount of dust generated by the boiler during the fertilizer production process, so that the dust-containing gas generated by the boiler is in the After treatment, the discharge standard can be met. Outside the entire dust collector body 1 is a housing 2 that plays a role of protection and support. The front part of the housing 2 is a trumpet-shaped air inlet 6. According to the direction of air intake, the front end of the air inlet 6 is thinner and the rear end is thicker. , the purpose of such setting is to gradually reduce the wind speed, reduce the impact of the wind on other equipment inside the air inlet 6, and the air outlet 7 is at the rear of the housing 2. The inner side of the air inlet 6 is provided with an air flow uniform distribution device 8. The air flow uniform distribution device 8 is a plate-shaped structure fixed on the inner side of the outer shell of the housing 2, and its function is to carry out the purification of the flue gas entering the housing 2. The flow is evenly distributed, so that the electrostatic precipitator unit 4 and the bag filter unit 5 behind can exert their dust removal function to the greatest extent, and increase the dust removal efficiency of the electrostatic precipitator unit 4 and the bag filter unit 5 . In order to filter out larger particles of dust in advance, improve the overall dust removal efficiency of the dust collector, and increase the service life of the bag, a pre-filter 9 is installed behind the air distribution device 8, and it is easier for the dust with larger particles to accumulate in gravity or Moving downward under the action of wind force, the aperture of the pre-filter 9 is relatively large. While filtering out large particles, it has little effect on the resistance of the entire airflow, reducing the electrostatic dust removal unit 4 and bag dust removal unit 5 behind. dust removal burden. Inside the pre-filter screen 9 is an electrostatic precipitator unit 4, the electrostatic precipitator unit 4 includes a cathode system 10, an anode system 11 and an electromagnetic beater 12, and the cathode system 10 and the anode system 11 include a plurality of parallel or substantially parallel cathode plates and the anode plate, the cathode plate and the anode plate are arranged at intervals. The electromagnetic beater 12 is arranged on the housing 2 above the electrostatic precipitator unit 4. During the working process of the dust collector, the electromagnetic beater 12 continuously beats the deposited dust so that it falls into the ash hopper 3 in time, so that the dust will not Deposition is too thick. The gas to be dedusted after being dedusted by the electrostatic precipitator unit 4 further enters the bag dedusting unit 5, and the charging effect accelerates the deposition of dust on the filter bag, and the dust with the same polarity repels each other, making it deposited on the filter bag The dust particles on the surface are arranged in an orderly manner, and the formed dust layer has good air permeability, high porosity and good peeling property. In this embodiment, in order to facilitate disassembly and maintenance, the filter bag of the bag filter unit 5 includes three upper, middle and lower dust collection bags 13, the three dust collection bags 13 are arranged up and down, and a blind plate is set in the middle to block the airflow . In order to facilitate the cleaning of the entire precipitator body 1, a back-blowing cleaning unit 14 is provided behind the housing 2 and inside the air outlet 7. After the precipitator body 1 has been working for a period of time, the dust collected on the electrostatic precipitator unit 4 and the bag dust removal unit 5 will When the thickness reaches the upper limit, the fan 15 of the back-blowing cleaning unit 14 is turned on, and the cleaning gas sent by the fan 15 enters the wind collecting plate 17 through the flexible pipe 16 to clean each device inside the housing 2 . The wind-collecting plate 17 controls the blowback in all directions of the airflow phase, reducing the dead angle where the airflow recoils and flows down. The opening switch control of the blowback cleaning unit 14 can be manually opened, or a sensor can be installed to monitor the resistance of the wind flow or the amount of dust deposition in real time, thereby realizing automatic control.

In order to make the pre-filter 9 have a better pre-dust removal effect without increasing the airflow resistance too much, the pore size of the pre-filter 9 is 2-3 microns. In order to better collect the dust falling from the electrostatic precipitator unit 4 and the bag dust removal unit 5, an ash hopper 3 is respectively provided under the electrostatic precipitator unit 4 and the bag dust removal unit 5, and the pre-filter 9 and the electrostatic precipitator unit 4 can share a dust hopper. bucket 3. In order to facilitate the fixing of the ash hopper 3, a dust collection plate 18 is provided above the ash hopper 3. The dust collection plate 18 is a porous plate structure. The through holes on the upper and lower sides of the dust plate, in the present embodiment, the shape of the dust collection hole is conical or inverted triangle, such dust collection hole can effectively reduce the secondary dust, and improve the efficiency of the electrostatic dust removal unit and the bag dust removal unit 5. Dust removal effect.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. The equivalent embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present utility model still belong to the technical solution of the present utility model scope of protection.

Claims (4)

1. A charge-loaded compound dust collector, comprising a dust collector body, the dust collector body comprising a housing, an ash hopper, an electrostatic dust removal unit and a bag dust removal unit, the front end of the housing is provided with an air inlet, and the rear end is provided with The air outlet, the inner side of the air inlet is provided with an air flow uniform distribution device, and it is characterized in that a pre-filter is provided inside the air flow uniform distribution device, and the electrostatic dust removal unit and the bag dust removal unit are sequentially arranged on the inner side of the pre-filter. The electrostatic dust removal unit includes a cathode system, an anode system and an electromagnetic beater, and the bag dust removal unit includes upper, middle and lower dust collection bags, and a blowback cleaning unit is also provided between the bag dust removal unit and the air outlet, The back-blowing cleaning unit includes a fan, a flexible connecting pipe and an air collecting plate, the flexible connecting pipe communicates with the fan and the air collecting plate, and the wind collecting plate communicates with the inside of the casing. 2. A charge-loaded composite dust collector according to claim 1, characterized in that the pore size of the pre-filter is 2-3 microns. 3. A charge-loading compound dust collector according to claim 2, characterized in that an ash hopper is provided below the electrostatic precipitator unit and the bag filter unit, and a dust collecting plate is provided above the ash hopper. 4. The charge-carrying composite dust collector according to claim 3, wherein the dust collecting plate is provided with a plurality of dust collecting holes, and the shape of the dust collecting holes is conical or inverted triangle.