CN201394503Y - A high-voltage electrostatic precipitator for industrial kilns - Google Patents

Abstract

The utility model provides a high-voltage electrostatic precipitator for industrial kilns, which is provided with an air inlet and an air outlet, and its dust removal electric field is formed by a plurality of inner walls of standpipes as dust collecting pole plates, and corona wires are arranged in the center of the standpipe. The high-voltage insulated porcelain bottle is composed of a corona wire group hanger set above the standpipe. It is characterized in that: the lower part of the standpipe is connected to the air distribution tube, one end of the air inlet is connected to the smoke discharge pipe of the industrial kiln, and the other end is connected to the distribution tube. , The dust hopper of the dust collector is connected to the bottom of the air equalizer, the air inlet connected to the air equalizer is provided with a swirl deflector extending into the air equalizer, and the other side of the air equalizer corresponds to the extension line of the swirl deflector. The air equalizer designed by the dust collector of the utility model makes the distribution of the dust-containing gas more uniform before entering the dust removal unit, and the two-dimensional herringbone-shaped air equalizer in the air equalizer has a drainage and acceleration effect on the gas, making the air flow to the middle of the air equalizer Moving will facilitate the even distribution of airflow in the air homogenizer. The utility model has obvious dust collection effect, and the dust removal efficiency can reach more than 99%. And it can trap submicron 0.1mm particles at high temperature. Easy operation and management, simple maintenance and so on.

Description

A high-voltage electrostatic precipitator for industrial kilns

technical field

The utility model relates to a high-voltage electrostatic precipitator for industrial kilns, which is mainly used in the environmental treatment of industrial kilns and belongs to the technical field of industrial flue gas dust removal.

Background technique

Industrial kilns use coal as the main fuel, and are heat source equipment for firing and heat preservation of products. This kind of kiln consumes a lot of energy, emits serious dust and smoke, and pollutes the environment very seriously. At present, the environmental treatment of industrial kilns mainly adopts high-voltage electrostatic precipitators. On the premise of not changing the basic structure of the kiln, it is possible to install only smoke and dust collectors at the end of the industrial kiln, or install the chimney on the settling chamber. The hot gas in the chimney and the outside air form a thermal pressure difference, so that the airflow has a bottom-up flow trend. In the field of dust collector technology, someone has disclosed the technical scheme of the electrostatic precipitator with the riser combination. The riser combination dust collection plate is composed of a plurality of hexagonal or circular standpipes arranged vertically, and a corona wire is installed in the center of each standpipe. Connect the negative electrode of the high-voltage generator, the dust-collecting plate of the standpipe is connected to the positive electrode and grounded, and a high-voltage electrostatic field is formed on the inner wall of the standpipe. Under the action of the electric field and the hot gas in the standpipe, the airflow flows upward and the dust settles down. Due to the relatively large volume of this type of dust collector, the main problem is that the distribution of smoke and dust in the standpipe is uneven and the dust removal efficiency is low when the amount of smoke and dust discharge is relatively large.

Contents of the invention

The technical problem to be solved by the utility model is to provide a high-voltage electrostatic precipitator for industrial kilns with a multi-tube vertical structure. The hot air is uniformly distributed in the high-voltage electrostatic field through the air equalization device installed before the smoke enters the precipitator. The cyclone separates the large particle dust and makes it settle naturally to improve the dust removal efficiency.

The technical scheme of the utility model is realized in this way: the high-voltage electrostatic precipitator for industrial kilns is provided with an air inlet and an air outlet, and its dust-removing electric field is formed by a plurality of standpipe inner walls as dust-collecting pole plates, corona The wire is set in the center of the standpipe, the high-voltage insulating porcelain bottle, and the hanger of the corona wire group are set on the top of the standpipe. The other end is connected to the air equalizer, and the lower part of the air equalizer is connected to the dust hopper of the dust collector. The air inlet connected to the air equalizer is provided with a swirling deflector extending into the air equalizer. The other side of the equalizer corresponds to the swirl deflector. The extension line sets the air distribution plate.

In the high-voltage electrostatic precipitator for industrial kilns, the swirling deflector or air uniformity plate is arranged in a two-dimensional herringbone shape.

In the high-voltage electrostatic precipitator for industrial kilns, the relationship between the length L of the swirling deflector, the expanded width W, and the diameter D of the air equalizer is as follows: L=(0.08-0.18)D; W=(0.15- 0.1) D; the radius of gyration R=W/2; the height of the gyratory deflector is consistent with the height of the air inlet.

In the high-voltage electrostatic precipitator for industrial kilns, the air-distributing plate is a 1/4 arc, and the arc radius is equal to the turning radius R of the swirling deflector.

In the high-voltage electrostatic precipitator for industrial kilns, the cross-section of the riser is rectangular, equilateral polygonal or circular.

In the high-voltage electrostatic precipitator for industrial kilns, a weight is set at the lower end of the corona wire.

The air equalizer designed for the high-voltage electrostatic precipitator for industrial kilns of the utility model makes the dust-laden gas distribute more evenly before entering the dust removal unit, which is beneficial to improve the dust collection efficiency. The swirling deflector set in the air uniform tube has a settling effect, which can make the large particles settle and fall into the ash hopper first, and will not form ash collection, and will also reduce the wind resistance of the ventilation system. The airfoil-shaped air-distributing plate in the air-distributing tube has the effect of draining and accelerating the gas, so that the airflow moves to the middle of the air-converting tube, which is beneficial to the uniform distribution of the air in the uniforming tube. The utility model has obvious dust collection effect, and the dust removal efficiency can reach more than 99%. Low energy consumption: power consumption 0.2-0.8KW h/1000Nm ³ flue gas, and can capture submicron 0.1mm particles at high temperature. Easy operation and management, simple maintenance and so on.

Description of drawings

Fig. 1 is a perspective view of a high-voltage electrostatic precipitator for industrial kilns of the present invention

Fig. 2 is a structural schematic diagram of a high-voltage electrostatic precipitator for an industrial kiln of the present invention

Figure 3 is the A-A view of Figure 2

Fig. 4 is a schematic diagram of the swirling deflector of the utility model

The markings in the figure are as follows:

1. Air outlet 2. Corona wire 3. Standpipe 4. Shell 5. Heavy hammer

6. Air equalizer 7. Air equalizer 8. Ash hopper 9. Air inlet 10. Rotary deflector

11. Corona wire group hanger 12. High voltage insulating porcelain bottle

Detailed ways

Fig. 1, 2, 3 are the structural representations of the utility model industrial kiln high-voltage electrostatic precipitator, which is provided with an air inlet 9 and an air outlet 1, and its dust removal electric field is formed by a plurality of standpipe 3 inner walls as dust collection plates , the corona wire 2 is arranged in the center of the standpipe, the high-voltage insulating porcelain bottle 12, and the corona wire group hanger 11 are arranged on the top of the standpipe to form. The main innovation of the utility model is that a One end of the air equalizer 6 and the air inlet 9 are connected to the smoke discharge pipe of the industrial kiln, and the other end is connected to the air equalizer 6, and the lower part of the air equalizer 6 is connected to the ash hopper of the dust collector 8, and the air inlet 9 connected to the equalizer 6 The swirl deflector 10 is set to extend into the air equalizer, and the other side of the air equalizer 6 corresponds to the extension line of the swirl deflector 10. The air equalizer 7 is arranged, and the swirl deflector 10 or the air equalizer 7 is a two-dimensional herringbone Symmetrically arranged, as shown in Figure 4: the relationship between the length L of the swirling deflector 10, the unfolded width W, and the diameter D of the air equalizer 6 is as follows: L=(0.08-0.18)D; W=(0.15-0.1)D; The turning radius R=W/2; the height of the turning deflector is consistent with the height of the air inlet 9 .

The air equalizing plate 7 is a 1/4 circular arc, and the radius of the circular arc is equal to the radius of gyration R of the swirling deflector. The section of the standpipe includes but not limited to rectangle, equilateral polygon or circle, and the lower end of the corona wire 2 suspended in the electric field is provided with a weight 5 .

In practical application, the waste gas containing a large amount of smoke and dust discharged from the industrial kiln enters the air equalizer 6 through the air inlet 9 . The swirling deflector 10 and the air equalizing plate 7 with a symmetrical two-dimensional herringbone structure will cause the high-speed moving dusty airflow to produce a swirling motion, forming swirls and eddies in the air equalizing tube 6 . The swirling airflow and the high-speed airflow at the entrance rub against each other to reduce the speed of the larger particles and promote the natural settlement of the larger particles, and finally settle in the ash hopper 7. The existence of the airflow swirl and eddy current reduces the absolute speed of the airflow movement, and forms a uniform distribution in the macroscopic sense in the uniform air cylinder 6, so that the dusty airflow forms a relatively uniform airflow before entering the multi-tube vertical electrostatic precipitator body 5. distribution, to achieve the ideal wind effect. The temperature of the dust-laden airflow after the air equalization treatment is high, forming a pressure difference with the ambient atmosphere, and it will naturally move upwards into the standpipe 3 of the electrostatic precipitator. The embodiment given by the utility model is that the standpipe is welded into a regular quadrilateral with 2-5mm steel plates , forming an independent regular quadrilateral standpipe, and the pipe wall becomes a dust collecting plate. Multiple sets of standpipe electrostatic precipitator bodies are formed by connecting multiple independent regular quadrilateral standpipes. The corona wire 2 in the standpipe 3 adopts a stainless steel wire with a diameter of 2-3 mm, and is located at the geometric center of the regular quadrilateral standpipe of the standpipe 3 . The high-voltage electric field generated by the corona wire 2 ionizes the air, and the dust particles are charged and move to the opposite electrode under the action of the electric field force, and finally gather on the pole plate of the standpipe 3 tube wall, and the collected dust is collected by rapping, etc. Recycled into the ash hopper 8, the clean air is discharged into the atmosphere through the air outlet 1.

The above description is only proposed as a technical solution that can be implemented by the high-voltage electrostatic precipitator for industrial kilns of the present invention, and not as a single restriction on the structure itself.

Claims (6)

1, a kind of high-voltage electrostatic dust separator for industrial furnace, it is provided with air inlet (9) and air outlet (1), its dedusting electric field is as the control of dust pole plate by a plurality of standpipes (3) inwall, corona wire (2) is arranged at the standpipe center, high tension shackle insulator (12), corona wire group suspension bracket (11) is arranged at standpipe top formation, it is characterized in that: the standpipe below connects equal air duct (6), air inlet (9) one ends are connected with the soot emissions pipeline of Industrial Stoves, the other end is connected with equal air duct (6), all air duct (6) below connects dust collector ash hopper (8), all the air inlet (9) that connects of air duct (6) is located to be provided with the deflector (10) that circles round and is extended in the equal air duct, and all the circle round extension line of deflector (10) of air duct (6) opposite side correspondence is provided with homogenating plate (7).

2, high-voltage electrostatic dust separator for industrial furnace according to claim 1 is characterized in that: described deflector that circles round (10) or homogenating plate (7) are two-dimentional herringbone setting.

3, high-voltage electrostatic dust separator for industrial furnace according to claim 2 is characterized in that: the relation of the length L of the described deflector that circles round (10), spreading width W and equal air duct (6) diameter D is as follows: L=(0.08-0.18) D; W=(0.15-0.1) D; Radius of gyration R=W/2; The height of deflector of circling round is consistent with the height of air inlet (9).

4, according to claim 2 or 3 described high-voltage electrostatic dust separator for industrial furnace, it is characterized in that: described homogenating plate (7) is one section 1/4 a circular arc, and arc radius equates with the radius of gyration R of the deflector that circles round.

5, high-voltage electrostatic dust separator for industrial furnace according to claim 1 is characterized in that: described standpipe (3) cross section is rectangle, equilateral polygon or circle.

6, according to right 1 described high-voltage electrostatic dust separator for industrial furnace, it is characterized in that: described corona wire (2) lower end is provided with weight (5).

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