CN209753119U - Double-spraying dust removal device of wet electrostatic dust collector - Google Patents

Abstract

The utility model discloses a wet electrostatic precipitator's two shower dust collector, including last shower, first shower nozzle, spray header, second shower nozzle and whirl board down, go up the top that spray header is located spray header down, first shower nozzle is installed at the delivery port of last spray header, and the delivery port of spray header is installed under to the second shower nozzle, and the whirl board is fixed inside the lower extreme position of dust remover casing and is located spray header and spray header down between, and the water inlet of going up spray header and spray header down is connected with water supply installation. The utility model discloses can spray the whirl to harmful substance such as flue gas, fine granule in getting into the dust remover and handle, both multiplicable harmful substance's humidity and carry out the quenching and tempering in order increasing its conductivity to it, satisfy wet electrostatic precipitator's operating condition, can make harmful substance moisture fall down again in order to reach dust removal effect, improved the dust collection efficiency of dust remover, dust removal effect is good, and the energy consumption is little.

Description

Double spray dust removal device of wet electrostatic precipitator

technical field

The utility model relates to the technical field of environmental protection dust removal equipment, in particular to a double-spray dust removal device of a wet electrostatic precipitator.

Background technique

In order to meet the needs of the new environmental protection situation and solve the problem of harmful substances such as flue gas and fine particles in the tail gas of current boilers and other equipment, wet electrostatic precipitators can be used for purification treatment. Wet electrostatic precipitator is a kind of dust removal equipment used to deal with trace dust and fine particles. It is mainly used to remove dust, acid mist, water droplets, aerosol, odor, PM2.5 and other harmful substances in wet gas. It is Ideal equipment for controlling air dust pollution.

The dust removal principle of the wet electrostatic precipitator is the same as that of the dry electrostatic precipitator. The dust is charged by high-voltage corona discharge, and the charged dust reaches the dust collection plate under the action of the electric field force. Among them, the existing wet electrostatic precipitator generally installs a water spray system above the air inlet of the precipitator, but the structure of the water spray system is simple, consisting of only one water pipe and several nozzles, and the dust removal effect is poor and the efficiency is low.

Utility model content

The purpose of this utility model is to overcome the above-mentioned defects in the prior art, and provide a double-spray dust-removal device of a wet-type electrostatic precipitator with good dust-removal effect, high efficiency, low energy consumption, and capable of spraying and swirling treatment of harmful substances .

In order to achieve the above purpose, the utility model provides a double-spray dedusting device of a wet electrostatic precipitator, which includes an upper spray pipe composed of several water pipes, several first nozzles, and a lower spray pipe composed of several water pipes. Pipeline, several second nozzles and swirl plate, the upper spray pipe, lower spray pipe and swirl plate are located inside the lower end of the dust collector housing, and the upper spray pipe is located above the lower spray pipe , the first nozzle is installed at the water outlet of the upper spray pipe, the second nozzle is installed at the water outlet of the lower spray pipe, and the swirl plate is fixed inside the lower end of the dust collector housing and is located at the upper spray Between the pipe and the lower spray pipe, the water inlet of the upper spray pipe and the water inlet of the lower spray pipe are respectively connected with the water supply device.

As a preferred embodiment, the upper spray pipe and the lower spray pipe are respectively arranged in the shape of a harpoon.

As a preferred embodiment, the swirl plate includes a fixed outer ring, a central connection part and several blades, and the blades are respectively obliquely connected between the fixed outer ring and the central connection part, and the blades surround the central connection part Evenly distributed.

As a preferred embodiment, the water supply device includes a water pump or a tap water source.

As a preferred embodiment, the lower end of the dust collector housing includes an upper funnel, a vertical round pipe and a lower funnel, and the upper funnel, round pipe and lower funnel are sequentially connected and communicated, The upper spray pipe, the lower spray pipe and the swirl plate are all installed in the circular pipe, the air inlet of the dust collector is arranged on the side wall of the circular pipe, and the sewage outlet is located at the bottom of the lower funnel.

Compared with the prior art, the utility model has the beneficial effects of:

The double-spray dedusting device of the utility model can spray and swirl the harmful substances such as flue gas and fine particles entering the dust collector, which can increase the humidity of the harmful substances and temper them to increase their conductivity. It satisfies the working conditions of wet electrostatic dust removal, and can make harmful substances wet water fall down to achieve the dust removal effect, which greatly improves the dust removal efficiency of the dust collector, with good dust removal effect and low energy consumption.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present utility model. Those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a sectional view of the wet electrostatic precipitator provided by the utility model;

Fig. 2 is a structural schematic diagram of the lower end of the dust collector housing provided by the utility model;

Fig. 3 is a schematic diagram of the internal structure of the double-spray dedusting device of the wet electrostatic precipitator provided by the present invention;

Fig. 4 is a structural schematic diagram of the double-spray dedusting device provided by the utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, which shows a wet electrostatic precipitator, including a precipitator housing 1, a support frame 2, a dust collection anode tube group 3, a cathode line 4, a high-voltage DC power supply 5, and a double-spray dust removal device 6 And the cleaning device 7, the various components of this embodiment will be described in detail below in conjunction with the accompanying drawings.

The dust collector housing 1 is installed on the support frame 2. The lower end of the dust collector housing 1 is provided with a dust collector inlet 11 and a sewage outlet 12. The top of the dust collector housing 1 is provided with a dust collector outlet pipe 13 connected to the inside. .

Specifically, as shown in Figure 2, the lower end of the dust collector housing 1 may include an upper funnel part 1a, a vertical round pipe part 1b and a lower funnel part 1c, and an upper funnel part 1a, a round pipe part 1b and a lower funnel part. Parts 1c are sequentially connected and communicated, double spray dedusting device 6 is installed in round pipe part 1b, dust collector inlet 11 is set on the side wall of round pipe part 1b, sewage outlet 12 is located at the bottom of lower funnel part 1c. Wherein, the structure of the lower end of the dust collector housing 1 is conducive to the collection and flow of sewage.

As shown in Figure 3, the dust-collecting anode tube group 3 is installed inside the dust collector housing 1, and the dust-collecting anode tube group 3 (ie, the sedimentation pole) can be composed of several vertical hollow anode tubes 31, and the dust-collecting anode tube group Each anode tube 31 in group 3 can preferably be set as a regular hexagonal pipe, which is combined and spliced into a honeycomb structure with high strength and high concentricity and parallelism of the anode tubes.

As shown in Figures 1 and 3, the interior of the dust collector housing 1 is equipped with an upper cathode wire fixing frame 14 above the dust collecting anode tube group 3 and a lower cathode wire fixing frame 15 located below the dust collecting anode tube group 3 , the cathode wire 4 is provided with several, the upper end of each cathode wire 4 is installed on the upper cathode wire fixing frame 14 respectively, and the lower end of each cathode wire 4 passes through the corresponding anode tube 31 longitudinally respectively and is installed on the lower cathode wire for fixing On the frame 15, the cathode wire 4 is located on the central axis of each anode tube 31. In this embodiment, the cathode wire 4 can preferably be set as a sheet-shaped 304 stainless steel cathode wire, which can increase the specific current and electric field strength.

The high-voltage DC power supply 5 is installed on the top of the dust collector housing 1 and can be electrically connected with all cathode wires 4 through wires. Among them, the high-voltage DC power supply 5 can be set as an outdoor high-voltage power supply with a rated voltage/rated current of 72kv/0.2A. Of course, other types of power sources can also be used according to actual needs.

As shown in Figure 1, Figure 2 and Figure 4, the double-spray dedusting device 6 is installed inside the lower end of the dust collector housing 1 (i.e., inside the circular tube part 1b) and is located between the dust collecting anode tube group 3 and the air inlet of the dust collector. between mouth 11. Specifically, the double spray dedusting device 6 can include an upper spray pipe 61 made up of several water pipes, several first shower heads 62, a lower spray pipe 63 made up of several water pipes, several second shower heads 64 and The impeller-shaped swirl plate 65, the upper spray pipe 61 and the lower spray pipe 63 are respectively in the shape of a harpoon, the upper spray pipe 61 is located above the lower spray pipe 63, and the first spray head 62 is installed on the upper spray pipe. The water outlet of the pipe 61, the second spray head 64 is installed at the water outlet of the lower spray pipe 63, the swirl plate 65 is fixed inside the lower end of the dust collector housing 1 and is located between the upper spray pipe 61 and the lower spray pipe 63 .

Wherein, the swirl plate 65 includes a circular fixed outer ring 651, a circular sheet-shaped central connecting portion 652 and several spirally designed blades 653, and all the blades 653 are obliquely connected between the fixed outer ring 651 and the central connecting portion 652 respectively. All the blades 653 are evenly distributed around the central connecting portion 652, and the swirl plate 65 as a whole is roughly in the shape of a fan impeller or a windmill impeller. When working, the swirl plate 65 is fixed, and the flue gas generates rotation and centrifugal motion when passing through the blades, while the liquid sprayed from the upper spray pipe 61 can spray to each blade and fully contact with the flue gas. Under centrifugal action, the mixture of smoke and liquid is thrown towards the inner wall of the circular tube part 1b, and finally falls and flows out. In addition, the liquid sprayed from the first spray head 62 of the upper spray pipe 61 and the second spray head 64 of the lower spray pipe 63 can all have the effect of sedimentation and dust removal.

During specific installation, the water inlet of the upper spray pipe 61 and the water inlet of the lower spray pipe 63 can pass through the circular pipe part 1b and be connected with the water supply device (such as water pump, tap water source, etc.) Provide water. Of course, in addition to ordinary tap water, a small amount of chemical reagents such as SO3, NH3 and Na2CO3 can also be added to increase the conductivity of the smoke.

The double spray dust removal device can play a preliminary dust removal and purification role in the dust collector, improve the dust removal efficiency, and can spray and swirl the incoming flue gas, fine particles and other harmful substances, which can increase the humidity of harmful substances and reduce them. Tempering is carried out to increase its conductivity to meet the working conditions of wet electrostatic dust removal, and to make harmful substances fall down in wet water to achieve the dust removal effect.

As shown in FIG. 1 and FIG. 2 , the cleaning device 7 is installed inside the upper end of the dust collector housing 1 and above the dust collecting anode tube group 3 . Specifically, the cleaning device 7 may include a cleaning pipeline 71 made up of several water pipes and several third nozzles 72, the third nozzle 72 is installed at the water outlet of the cleaning pipeline 71, and the water inlet of the cleaning pipeline 71 passes through the dust collector shell The body 1 is connected with a water supply device (such as a water pump, a tap water source, etc.) through a pipeline. The cleaning device 7 can wash down and remove the harmful substances deposited on the dust collecting anode tube group 3, so as to prevent the collected dust particles from flying again and improve the dust removal efficiency. During work, the cleaning device 7 can adopt the regular flushing mode.

To sum up, the double-spray dedusting device of the present invention can spray and swirl the harmful substances such as flue gas and fine particles entering the dust collector, which can not only increase the humidity of harmful substances, but also adjust and temper them. Increasing its electrical conductivity can also make harmful substances wet water fall down to achieve the dust removal effect, which greatly improves the dust removal efficiency of the dust collector, with good dust removal effect and low energy consumption.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (5)

1. A double-spray dedusting device of a wet electrostatic precipitator, characterized in that: comprising an upper spray pipeline (61) made up of several water pipes, several first nozzles (62), a lower water pipe made up of several water pipes Spray pipe (63), several second spray nozzles (64) and swirl plate (65), described upper spray pipe (61), lower spray pipe (63) and swirl plate (65) are positioned at dust collector Inside the lower end of the housing (1), the upper spray pipe (61) is located above the lower spray pipe (63), and the first spray head (62) is installed at the water outlet of the upper spray pipe (61) , the second spray head (64) is installed at the water outlet of the lower spray pipe (63), the swirl plate (65) is fixed inside the lower end of the dust collector housing (1) and is located on the upper spray pipe (61 ) and the lower spray pipe (63), the water inlet of the upper spray pipe (61) and the water inlet of the lower spray pipe (63) are respectively connected with the water supply device. 2. The double spray dedusting device of the wet electrostatic precipitator according to claim 1, characterized in that: the upper spray pipe (61) and the lower spray pipe (63) are respectively arranged in the shape of a harpoon. 3. The double-spray dedusting device of the wet electrostatic precipitator according to claim 1, characterized in that: the swirl plate (65) includes a fixed outer ring (651), a central connection part (652) and several blades (653), the blades (653) are obliquely connected between the fixed outer ring (651) and the central connection part (652), and the blades (653) are evenly distributed around the central connection part (652). 4. The double-spray dedusting device of a wet electrostatic precipitator according to claim 1, wherein the water supply device comprises a water pump or a tap water source. 5. The double-spray dedusting device of the wet electrostatic precipitator according to claim 1, characterized in that: the lower end of the dust collector housing (1) includes an upper funnel part (1a), a vertical round pipe part (1b) and the lower funnel part (1c), the upper funnel part (1a), the circular tube part (1b) and the lower funnel part (1c) are connected and communicated in sequence, the upper spray pipe (61), the lower Both the spray pipe (63) and the swirl plate (65) are installed in the circular tube part (1b), and the side wall of the circular tube part (1b) is provided with a dust collector inlet (11), and the lower The bottom of the funnel part (1c) is provided with a sewage outlet (12).