KR100347705B1 - Electro cyclone - Google Patents

Abstract

The present invention has an inner space (11) is provided with a purge gas discharge pipe 12 at the upper end, the dust box 14 is provided at the lower end, the casing is provided with a discharge gas inlet pipe (16) on one side of the outer peripheral surface ( 10); It is provided in plurality in the casing 10, the upper side is closed by the diaphragm 21 so that the gas through the exhaust gas inlet pipe 16 can be introduced into the lower space in the casing 10, the upper side of the inner peripheral surface A dust collecting hopper 20 provided with a plurality of guide vanes 22 extending downward so that the gas has a centrifugal force downward; The hollow inner and outer discharge chambers 31 and 41 in the dust collecting hopper 20 and installed in such a way that the gas flowing into the lower space of the dust collecting hopper 20 can be discharged to the purification gas discharge pipe 12. Outer electrostatic precipitator tubes 30 and 40; A discharge body 50 inserted in the center of the inner electrostatic precipitating tube 30 in an axial direction, the outer surface having a screw shape; A plurality of discharge rods 60 provided along the circumference at an intermediate portion between the inner and outer electrostatic precipitating tubes 30 and 40; A high voltage supply unit 70 for applying power to the screw-type discharge body 50 and the plurality of discharge rods 60; It is provided on the outer side of the casing 10, characterized in that it comprises a dust collector (80) to drop the dust particles.

Description

Cyclo electric dust collector {ELECTRO CYCLONE}

The present invention relates to an electric dust collector with a cycle, and more particularly, to remove dust from the exhaust gas by centrifugal force and to collect dust by electric discharge, and thus to efficiently remove dust in the exhaust gas at a lower installation cost and operation maintenance cost. The present invention relates to an electrostatic precipitator with a cycle for removing it.

In general, the methods used to remove dust from process emissions can be broadly classified into mechanical and electrical methods.

In mechanical removal, the separating force extends to the entire fluid, while in electrical removal, the force only extends to the particles themselves.

In addition, the electric dust collecting method is to electrically separate the fine particles suspended in the exhaust gas to separate the fine particles from the gas by using an electrostatic force, an example of which is an electrostatic precipitator.

Representative examples of mechanical removal methods include centrifugal force collectors and inertial force collectors. The centrifugal force collector, which is mainly used, removes dust in the exhaust gas by centrifugal force. Therefore, only particles having large particle diameters are removed and fine particles are discharged as they are. have.

In addition, the main type of the conventional electrostatic precipitator is a flat type electrostatic precipitator, and the discharge rod and the collecting electrode are designed as a wire plate, so that gas is moved in a vertical direction between the wires.

And, unlike the mechanical dust collector, the electrostatic precipitator is preferred in terms of wide applicability, convenience of operation and maintenance, while revealing various problems such as re-scattering of the dust collected in the dust collector at home and abroad and cutting of the discharge electrode. In addition, the installation is complicated and the operation of the dust collector is greatly affected by the composition of the exhaust gas and the composition of dust and has a very high installation cost.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to combine the centrifugal force dust collecting method and the dust collecting method by electric discharge which are separately configured in order to remove particulate matter of the conventional exhaust gas in one body. The purpose is to collect the exhaust gas with high efficiency.

1 is a front configuration diagram of a cyclo electrostatic precipitator according to the present invention,

2 is a cross-sectional view taken along line B-B of the electrostatic precipitator according to the present invention;

3 is an enlarged view illustrating main parts of FIG. 1;

4 is a planar use state of FIG.

<Description of the symbols for the main parts of the drawings>

10: casing 11: inner space

12: purge gas discharge line 13: valve

14: dust box 15: constant flow rate adjustment

16: exhaust gas inlet pipe 20: dust collection hopper

21: plate 22: guide vane

30: inner electrostatic precipitating tube 31: inner discharge chamber

40: outer electrostatic precipitator 41: outer discharge chamber

50: discharge body 60: discharge rod

70: high voltage supply unit 80: deduster

90: insulator 91: T.R

The present invention for achieving the above object has an internal space 11 and the purification gas discharge pipe 12 is provided at the upper end, the dust box 14 is provided at the lower end, the exhaust gas inlet pipe 16 on one side of the outer peripheral surface Casing 10 is provided with; It is provided in plurality in the casing 10, the upper side is closed by the diaphragm 21 so that the gas through the exhaust gas inlet pipe 16 can be introduced into the lower space in the casing 10, the upper side of the inner peripheral surface A dust collecting hopper 20 provided with a plurality of guide vanes 22 extending downward so that the gas has a centrifugal force downward; The hollow inner and outer discharge chambers 31 and 41 in the dust collecting hopper 20 and installed in such a way that the gas flowing into the lower space of the dust collecting hopper 20 can be discharged to the purification gas discharge pipe 12. Outer electrostatic precipitator tubes 30 and 40; A discharge body 50 inserted in the center of the inner electrostatic precipitating tube 30 in an axial direction, the outer surface having a screw shape; A plurality of discharge rods 60 provided along the circumference at an intermediate portion between the inner and outer electrostatic precipitating tubes 30 and 40; A high voltage supply unit 70 for applying power to the screw-type discharge body 50 and the plurality of discharge rods 60; It is provided on the outer side of the casing 10, characterized in that it comprises a dust collector (80) to drop the dust particles.

With reference to the accompanying drawings an electrostatic precipitator with a cycle according to the present invention will be described in detail.

1 is a cross-sectional view of an electrostatic precipitator with a cycle according to the present invention. The present invention includes a casing 10 configured to discharge a purge gas by electrostatic precipitating exhaust gas, and a plurality of casings 10 are provided in the casing 10. The dust collecting hopper 20 is provided, the internal and external electrostatic precipitating pipes 30 and 40 to decompose and remove foreign substances from the exhaust gas in the dust collecting hopper 20, and the inner electrostatic precipitating pipe 30 are provided. Supplying power to the discharge body 50, the plurality of discharge rods (60) provided between the inner and outer side electrostatic precipitator (30, 40), and the discharge body (50) and the discharge rod (60) The voltage supply part 70 and the deduster 80 which drops the dust in the casing 10 to the dust box 14 are comprised.

The casing 10 is formed to have a space 11 therein, and a purge gas discharge pipe 12 is provided at an upper end thereof, and a dust box 14 is provided at a lower end thereof so as to remove dust from the space 11. Exhausted. A valve 13 is provided between the dust box 14 and the end of the casing 10 to be opened and closed according to a user's operation.

The lower end of the casing 10 has a wedge-shaped inclined portion whose width is narrowed so that dust particles can slide down to the dust box 14 through the wall surface of the inclined portion. In addition, the outer circumferential surface side of the casing 10 is provided so that the exhaust gas inlet pipe 16 can communicate with the internal space 11, the exhaust gas inlet pipe 16 has a plurality of circumference along the inner peripheral surface of the outlet end The constant flow rate adjusting piece 15 is provided to diffuse or vortex the gas flowing into the space 11 of the casing 10.

In addition, the casing 10 is provided with a plurality of dust collection hopper 20 to filter the dust particles when the induction of the exhaust gas upward while inducing the exhaust gas upward, the dust collection hopper 20, The upper side is closed by the diaphragm 21 so that the gas through the exhaust gas inlet pipe 16 of the casing 10 can only flow into the lower space in the casing 10.

In addition, the inside and outside of the dust collecting hopper 20 is passed through the diaphragm 21 of the casing 10 to the inner and outer electrostatic precipitating tube 30, 40 which is in communication with the lower space is fixed, The inner and outer electrostatic precipitator tubes 30 and 40 are formed to be discharged to the upper space in a state in which the exhaust gas flowing into the lower space of the casing 10 is purged, and is formed in a hollow shape.

The outer circumferential surface of the outer electrostatic precipitator tube 40 is positioned inside the dust collecting hopper 20 with a predetermined width spaced therein, and the inner electric precipitator with the predetermined interval spaced inside the outer electrostatic precipitator tube 40. The tube 30 is provided. That is, the outer discharge chamber 41 is formed between them, and the inner discharge chamber 31 is formed inside the inner electrostatic precipitator 30.

The inner and outer discharge chambers 31 and 41 communicate the inner space 11 of the casing 10 up and down, and the discharge body 50 is disposed in the center of the inner electrostatic precipitator 30 in the axial direction. Inserted and fixed, the outer surface of the discharge body 50 is formed in the shape of a screw 51 so that the gas to move to generate the vortex phenomenon and centrifugal force.

In addition, the outer discharge chamber 41 between the inner and outer electrostatic precipitating tubes 30 and 40 is provided with a plurality of discharge rods 60 along the circumference at an intermediate position, and when the power is applied to the discharge body 50. As a result, a corona phenomenon occurs around the dust particles.

In addition, between the inner circumferential surface of the dust collecting hopper 20 and the outer circumferential surface of the outer electrostatic precipitating pipe 40, a plurality of inclination angles may be provided so that gas through the exhaust gas inlet pipe 16 may flow downward with a centrifugal force. The guide vane 22 is provided with a spiral shape to extend downward.

Here, the guide vanes 22 may be formed such that the width of the outlet side is wider than the inlet side to change the flow rate.

In addition, the dust collecting hopper 20 is formed in a wedge shape in which the inner diameter thereof is gradually narrowed so that dust particles collected by centrifugal force flow down.

Reference numeral 70 denotes a high voltage supply unit, and applies power to the screw discharge body 50 and the plurality of discharge rods 60.

The deduster 80 provided outside the casing 10 includes a motor 81, a striking rod 82 rotated by the motor 81, and an outer surface of the casing 10. And the striking rod 83 to make the casing 10 ring when the striking rod 82 strikes, and the striking rod 82 blows dust on the outer surface of the casing 10 according to the rotation of the motor 81. This allows the particles to fall downward.

Reference numeral 17 denotes a support, wherein the support 17 is fixed to the inner space of the casing 10 to fix the plurality of the discharging bodies 50 and the discharging rods 60, and the voltage supply unit 70. The wire 71 is guided to each of the discharge body 50 and the discharge rod 60 to be applied from the power supply is fixed.

Reference numeral 90 denotes an insulator for insulation, and 91 denotes a T.R (conversion rectifier).

With reference to the accompanying drawings, the electrostatic precipitator with a cycle configured as described above will be described in detail its operating state.

As shown in FIG. 1, when a high voltage supply unit 70 and a fan (not shown) for exhaust gas inflow and outflow are operated through a control device, a wire (as shown in FIGS. 1 and 2) is shown. Power is applied to the discharge body 50 and the discharge rod 60 through 71, which causes high voltage corona discharge to occur around the discharge lines as shown in FIG.

Subsequently, dust in the exhaust gas discharged from the heating and industrial boilers or various incinerators is introduced through the exhaust gas inlet pipe 16, and the inflow gas is shown in FIG. 2 as shown in FIG. 2. At the same time as vortex diffusion by the guide vanes 22 as shown in Figures 1 and 3 are introduced into the lower space of the casing (10).

At this time, the incoming exhaust gas is moved into the dust collecting hopper 20 while the centrifugal force is generated by the plurality of guide vanes 22. At this time, the heavy dust particles of the exhaust gas particles are changed according to the flow rate of the dust collecting hopper 20 by the centrifugal force. The inner surface of the inner and outer discharge chambers formed by the inner and outer electrostatic precipitating tubes 30 and 40 by a fan are collected after the large particles of 5 µm or more are first collected by the lower dust box 14 through the wall surface of the The fine particles are collected by the corona discharge phenomenon while passing through the (31) and (41), wherein the purge gas from which the foreign matter is removed is discharged to the outside through the purge gas discharge pipe 12.

At the same time, the dust collected on the wall surface of the dust collection hopper 20 is settled to the bottom by the striking rod 82 of the dust collector 80 is collected in the dust box 14, the valve 13 by the manager when a certain degree is collected Collected and disposed of by operation.

By the operation as described above, the width of the bottom outlet portion of the guide vanes 22 which induce the centrifugal force is formed larger than the width of the upper inlet portion of the guide vane 22 so that the cross-sectional area through which the exhaust gas passes is gradually expanded. It is preferable to use this, and this is to keep the inflow rate as high as possible because the dust collection efficiency of the exhaust gas is greatly affected by the inflow rate, and also the dust in the inflow gas having a high flow rate It is to be removed under a large centrifugal force while passing through the guide vane (22).

Therefore, the exhaust gas outside the region subjected to the centrifugal force greatly moves in the direction of the outlet with a very slow flow rate as the cross-sectional area rapidly expands, and the gas is sensitive to the flow rate change while the particle diameter in the exhaust gas changes. Large particles move into the dust box 14 with centrifugal force and rotating along the wall.

In addition, the dust in the exhaust gas in the state in which the dust particles are first filtered is passed through the inner and outer discharge chambers 31 and 41 and is polarized by the high voltage corona discharge as shown in FIG. Only the attached and purified gas is discharged.

In addition, the exhaust gas passing through the inner discharge chamber 31 has a centrifugal force by the screw 51-shaped discharge body 50, passes through the electrostatic precipitating area in a state of being rotated in a screw shape, and foreign matter is more efficiently filtered. You lose.

Thus, the cyclone electrostatic precipitator according to the present invention, firstly; In one casing 10, since the exhaust gas is purified by mechanical primary dust collection using centrifugal force and secondary dust collection by corona discharge, the dust collection efficiency is greatly improved; By installing the screw type discharge body 50 in the inner discharge chamber 31 constituting the internal electrostatic precipitating area, high voltage discharge occurs through the sharp part of the screw discharge electrode, and the dust in the gas passes through this part, Polarized or ionized, it moves out of the gas stream and moves to the opposite dust collector. Over time, the dust collector accumulates dust, forming a layer of dust, some of which is desorbed by its own weight, and at regular intervals as a desorption device. Desorption has the effect of removing foreign matter, third; The outer discharge chamber 41 constituting the external electrostatic precipitating region is provided with a discharge rod 60 in the form of a square rod, so that the dust in the exhaust gas in the external dust collecting region, like the internal dust collecting region, moves to the dust collecting electrode by corona discharge. After the gas is collected and introduced through the centrifugal force dust collecting region has a part of the centrifugal force obtained, there is an effect that can be easily collected by applying a high voltage electrostatic force.

In addition, as described above, the gas passing through the electric dust collecting zone is discharged through the upper part, and the inlet flow rate of the centrifugal force dust collector of the exhaust gas containing dust is about 12 m / sec and the cleanable capacity of the unit cyclo-type electrostatic precipitator is about 16 M 3 / min. Therefore, according to the present invention, the cyclo electrostatic precipitator is much smaller than the conventional electrostatic precipitator in terms of the area of installation and the size of the device compared to the conventional dust collector, and can prevent the pollution of various small and medium-sized particulate matter discharge facilities with high efficiency. As a device there is a very moderate effect.

Claims (1)

The casing 10 having an inner space 11 and provided with a purge gas discharge pipe 12 at an upper end, a dust box 14 at a lower end, and an exhaust gas inlet pipe 16 at one side of an outer circumferential surface thereof. ; It is provided in plurality in the casing 10, the upper side is closed by the diaphragm 21 so that the gas through the exhaust gas inlet pipe 16 can be introduced into the lower space in the casing 10, the upper side of the inner peripheral surface A dust collecting hopper 20 provided with a plurality of guide vanes 22 extending downward so that the gas has a centrifugal force downward; The hollow inner and outer discharge chambers 31 and 41 in the dust collecting hopper 20 and installed in such a way that the gas flowing into the lower space of the dust collecting hopper 20 can be discharged to the purification gas discharge pipe 12. Outer electrostatic precipitator tubes 30 and 40; A discharge body 50 inserted in the center of the inner electrostatic precipitating tube 30 in an axial direction, the outer surface having a screw shape; A plurality of discharge rods 60 provided along the circumference at an intermediate portion between the inner and outer electrostatic precipitating tubes 30 and 40; A high voltage supply unit 70 for applying power to the screw-type discharge body 50 and the plurality of discharge rods 60; Cyclic electrostatic precipitator, characterized in that it comprises a dust collector (80) provided on the outside of the casing (10) to drop the dust particles.