JP3036083U - Electrostatic precipitator shunt integration mechanism - Google Patents

Abstract

(57) [Summary] [PROBLEMS] An electric precipitator is large in size, leading to an increase in construction cost and an installation area. Further, if the area of the dust collecting electrode is simply reduced, the dust collecting efficiency is significantly reduced. The present invention is a shunt collecting mechanism for an electric dust collector that can be downsized without reducing the dust collecting efficiency by adopting a shunting mechanism and a cylindrical dust collecting electrode. The present invention provides a flow divider (4) in a gas passage, forcibly decelerates and diffuses a gas flow, sends a gas flow into a dust collector body (1), and a dust collector electrode (2). The dust collecting electrode (2) by adopting a concentric cylindrical structure with 10 layers
Can be integrated, and the size can be reduced without lowering the efficiency.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an electric dust collector which is compact and compact by providing a dust collector with a gas flow dividing mechanism and having a cylindrical dust collecting electrode.

[0002]

[Prior art]

In the conventional electrostatic precipitator, as shown in FIG. 3, the gas flow velocity in the dust collecting space of the dust collector body (12) is naturally diffused, so that the dust collector body with respect to the cross-sectional area of the discharge port (15) is When the cross-sectional area of (12) was doubled, the flow velocity was halved, and it had to be adopted. This is because the dust that has entered the dust collector body (12) through the discharge port (15) is charged with negative ions by the discharge electrode (14) and adheres to the dust collection electrode (13) with a positive charge due to the Coulomb force. When the gas flow velocity in the dust space is 1 to 2 m / s or more, the dust adhering to the dust collecting electrode (13) and the movement of the dust to the dust collecting electrode (13) by the Coulomb force are greatly hindered. When the gas flow velocity of the discharge port (15) is 20 m / s, the flow velocity in the dust collecting space is 1 m 2 / _{S. When the} cross-sectional area of the discharge port (15) is 1 m ² , the dust collector body (12) The cross-sectional area of the must be 20 m ² . For this reason, it was necessary to increase the cross-sectional area and reduce the flow rate in an incinerator that discharges at a high gas flow rate. Further, since the dust collection efficiency increases as the area of the dust collection electrode (13) increases, the dust collection electrodes (13) are formed in a rectangular plate shape and arranged side by side. Therefore, there are problems that the electrostatic precipitator is large and the installation area is increased.

[0003]

[Problems to be solved by the device]

 If the electrostatic precipitator can be miniaturized, the construction cost and the installation area can be reduced. However, for the natural diffusion of the gas flow, the dust collector body must be made larger. Moreover, even if the dust collecting electrode area is simply reduced to reduce the size of the dust collecting electrode area, the dust collecting efficiency is significantly reduced. Therefore, by forcibly suppressing the flow velocity of the gas flow by the flow dividing mechanism, and by making the dust collecting electrode a cylindrical structure and consolidating the dust collecting electrode area, the electrostatic precipitator can be installed without reducing the dust collecting efficiency. The aim is to reduce the size and eliminate the above-mentioned problems.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a structure in which a flow diverter is provided at the smoke outlet to forcibly diffuse and decelerate the gas flow, and to evenly distribute the dust in the dust collector main body. The dust collecting electrode is integrated by adopting a cylindrical structure with multiple concentric thin plates to increase the area of the dust collecting electrode per unit volume, which can be downsized without lowering efficiency. Has been resolved.

[0005]

[Embodiment of the invention]

 Attach the cylindrical dust collector body to the top of the chimney. At the bottom of the dust collector body, a flow dividing mechanism with a conical flow divider with a conical upper part is installed. Radial discharge electrodes are fixed to the upper part of the flow distributor with eight insulators. The structure is such that the dust collecting electrode is fixed to the dust collector main body by the dust collecting electrode support rods at the upper and lower ends above the discharge electrode. The main body of the dust collector also serves as the outermost part of the dust collector, and a cylindrical thin stainless steel plate is concentrically arranged in 10 layers at 10 cm intervals. A high-voltage DC voltage is applied between the two electrodes, with the discharge electrode as the negative electrode and the dust collection electrode as the positive electrode, to generate negative ions by corona discharge, and when the gas stream containing dust passes through them, the dust is negative ions. The structure is such that it is charged to the positive electrode and adheres to the dust collecting electrode, which is the positive electrode, by the action of Coulomb force to collect the dust.

[0006]

Embodiment 1 Hereinafter, Embodiment 1 will be described with reference to the attached FIG. The gas flow containing dust discharged from the chimney (5) is diffused by the flow distributor (4) and flows into the dust collector body (1). The stainless radial discharge electrode (3) is fixed to the dust collector body (1) by the insulators (6) at eight locations. A cylindrical dust collecting electrode (2) is attached to the upper part of the concentric circle of 10 layers. The dust collecting electrode (2) is fixed to the dust collector main body (1) by a dust collecting electrode supporting rod (8) welded to the upper and lower portions. Using the discharge electrode (3) as a negative electrode and the dust collection electrode (2) as a positive electrode, a high voltage direct current voltage of 30 to 80 KV at which discharge is generated is applied to generate negative ions by corona discharge. When the gas flow containing dust enters the dust collector body (1) and then passes through the discharge electrode (3), the dust is charged with negative ions and is a positive electrode above the discharge electrode (3) due to the action of Coulomb force. The dust is attached to the dust collecting electrode (2) and collected. Since the dust collector body (1) also serves as the outermost portion of the dust collecting electrode (2), and the inner and outer surfaces of each cylinder also serve as the dust collecting surface, the dust collecting area is increased. In order to drop the attached dust to the lower part, pull the hammer hammer wire (11) that has passed through the hammer support machine (10) and lift the iron hammer (9) to loosen the hammer hammer (11) ( 9) is dropped, and the dust collecting electrode support rod (8) is hit to drop dust, and the dust is discharged from the soot / dust discharge port (7). The gas flow in which the dust is collected is discharged from the dust collector body (1) to the outside air. Further, since the dust collector body (1) is downsized, it can be attached to the upper part of the chimney (5).

[0007]

Second Embodiment A second embodiment will be described with reference to the attached FIG. The dust adhering to the dust collecting electrode (2) is enlarged and hit by an iron mallet (not shown) on the upper part of the dust collecting electrode (2) to fall to the lower part and is discharged from the soot dust discharging port (7). At this time, since the upper part of the flow divider (4) has a conical shape, it is possible to prevent soot dust from falling in the directions of A and B in the figure and prevent it from falling into the chimney, and the soot discharge port (7) Can be promoted to.

[0008]

[Effect of the invention]

 As described above, the present invention has a structure for forcibly decelerating and diffusing the gas flow by providing the flow dividing mechanism, so that it can be made smaller than the conventional natural diffusion method, and the dust collecting electrode has a cylindrical structure of 10 layers. Therefore, when compared with the plate-like structure, the dust collection area per cylinder of the same volume can be increased by about 85%, and the same dust collection area can be downsized by about 54%. In addition, since the upper part of the flow dividing mechanism has a conical shape, it has the effect of preventing the adhering dust from entering the stack when it falls.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a first embodiment of a split flow collecting mechanism of an electrostatic precipitator according to the present invention.

FIG. 2 is a cross-sectional view showing Embodiment 2 of the split flow collecting mechanism of the electrostatic precipitator of the present invention.

FIG. 3 is a partially cutaway front perspective view showing a conventional technique.

[Explanation of symbols]

 1. Dust collector body 2. 2. Dust collection electrode Discharge electrode 4. Current divider 5. Chimney 6. Insulator 7. Dust outlet 8. Dust collecting pole support rod 9. Mallet 10. Mallet support machine 11. Hammering wire 12. Dust collector body 13. Dust collecting electrode 14. Discharge electrode 15. Outlet 16. insulator

Claims (3)

[Utility model registration claims] 1. An electrostatic precipitator in which a flow diverter is provided in a gas passage for forcibly diffusing and decelerating a gas flow to reduce the size of the electrostatic precipitator. 2. The electrostatic precipitator is characterized in that the dust collecting electrode is concentrically formed into a cylindrical structure of a plurality of layers in order to consolidate the dust collecting electrode area and reduce the size without lowering the dust collecting efficiency. Electrostatic precipitator shunt integration mechanism 3. An electric precipitator, in order to prevent dust from entering the chimney when fine particulate dust (hereinafter referred to as dust) collected by the dust collecting electrode falls to the lower part, the upper part of the shunt. Flow concentrating mechanism of the electrostatic precipitator, characterized by the cone shape