JP2005081296A - Electrostatic dust collecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic dust collecting apparatus for cleaning a soiled gas, in which a charged water atomizing unit, water supplying route and gas passage are made better than those of the conventional electrostatic dust collecting apparatus. <P>SOLUTION: The charged water atomizing unit which is assembled in this electrostatic dust collecting apparatus and arranged in a dust collecting chamber is always made parallel with a dust collecting plate and kept in a horizontal state. The electrical insulation of the water supplying route arranged between a water supply source and the charged water atomizing unit arranged in the dust collecting chamber is made perfect. The gas passage is constituted so that the gas passing through the dust collecting chamber is always averaged in the dust collecting chamber. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electrostatic precipitator that purifies dirty gas.

  The basic structure of the electrostatic precipitator chamber incorporated in the electrostatic precipitator is that a grounded dust collector is placed, and in parallel with the dust collector, high-voltage electrostatically charged water is atomized and emitted. As a clean gas, a dust collection chamber is constructed by installing charged water atomization equipment consisting of pipes with spray nozzles arranged downward, and dirty gas is blown into the dust collection chamber to remove particulates in the dirty gas. It is said to have a structure that blows through.

  The electrostatic dust collection in the electrostatic dust collection chamber incorporated in the electrostatic dust collector having the above-described structure is a charged water composed of pipes in which spray nozzles are arranged downward to atomize and radiate water charged with high-pressure static electricity. An electric field with a high potential difference is generated between the atomization equipment and the grounded dust collector, creating an atmosphere in which the atomized water charged from the spray nozzles arranged downwards on the pipes fly toward the grounded dust collector. The dirty gas is blown through the atmosphere, and the dirty gas is charged to the fine particles contained in the dirty gas in the process of passing through the electric field, and the charged fine particles are atomized water. At the same time, it is attached to a grounded dust collecting plate, captured by the grounded dust collecting plate, and exhausted as a clean gas.

A power supply for charging high-voltage static electricity to a charged water atomizing equipment consisting of a pipe in which spray nozzles arranged in the electrostatic dust collecting chamber incorporated in the electrostatic dust collecting apparatus are arranged downward is disposed outside the dust collecting chamber. ing.
High-pressure static electricity sent from the power supply to the charged water atomization equipment consisting of pipes with spray nozzles facing downwards is a pipe with spray nozzles arrayed downwards via conductive members from the power supply installed outside the dust collection chamber. The charged water atomization equipment consisting of is configured to be charged.

A water supply source for supplying water to be supplied to the charged water atomization equipment consisting of pipes in which spray nozzles arranged in the electrostatic dust collecting chamber incorporated in the electrostatic dust collecting device are arranged downward is provided outside the dust collecting chamber. is set up.
The water sent from the water supply source to the pipe with the spray nozzles arranged downwards passes through the long hose wound spirally from the water supply source to the charged water atomization equipment consisting of the pipes with the spray nozzles arranged downwards. It is configured to supply water through the conductive member.

  The electrostatic dust collecting chamber incorporated in the electrostatic dust collecting apparatus in which the charged water atomizing equipment including the above-mentioned grounded dust collecting plate and a pipe in which spray nozzles for atomizing charged water are arranged downward is arranged. Dirty gas is blown from a blowing port having an air volume adjusting function, and the dirty gas is allowed to pass through an electric field generated between the above-described members and blown out as clean gas.

An apparatus showing an example of the configuration is described as an embodiment shown in Japanese Patent Publication No. 52-25590.
Japanese Patent Publication No.52-25590

1. Both ends of the dust collecting chamber incorporated in a general electrostatic dust collecting device are not limited to the electrostatic dust collecting chamber incorporated in the electrostatic dust collecting device of the type described in Japanese Patent Publication No. 52-25590. Charged water atomization equipment consisting of pipes with many spray nozzles arranged downwards supported by an insulating material always faces the surface of the dust collecting plates arranged in parallel in multiple rows in the dust collection chamber. They must be arranged in parallel and horizontally.
2. Not only the electrostatic dust collection chamber incorporated in this type of electrostatic dust collector, but also a spray nozzle arranged with both ends supported by an insulating material in the dust collection chamber incorporated in a general electrostatic dust collector. Connected to the water inlet of the charged water atomization equipment consisting of a large number of pipes in the direction and connected to a water supply source connected via a conductive pipe charged with direct current high voltage static electricity from the power supply A spirally wound hose that supplies water connected via a mouth must be reliable.
3. Not only the electrostatic precipitator built into this type of electrostatic precipitator, but also the dust collecting chamber built into a general electrostatic precipitator, the dirty gas sent to the precipitating chamber is all over the dust collecting chamber. Over the air should be of uniform concentration and strength.
By the way, the gazette does not disclose any means for solving the above-described points.

The present invention
1. The dust collecting chamber incorporated in a general electrostatic dust collecting device is not limited to the electrostatic dust collecting chamber incorporated in the electrostatic dust collecting device of the type described in Japanese Patent Publication No. 52-25590. Charged water atomization equipment consisting of pipes with many spray nozzles arranged downward and supported by insulating materials at both ends is always opposed to the surface of the dust collecting plates arranged in parallel in multiple rows in the dust collection chamber. In parallel and horizontally.
2. It is not only incorporated in the electrostatic dust collector of the type described in the above publication as an illustrative embodiment, but both ends between dust collector plates arranged in parallel to a dust collection chamber incorporated in a general electrostatic dust collector. Water supply source connected to the water injection port of a charged water atomization equipment consisting of pipes with a number of spray nozzles supported downward by an insulating material via a conductive pipe charged with DC high-voltage static electricity from the power supply Ensure the insulation of the spirally wound hose that supplies water from
3. Not only the electrostatic precipitator of the type described in the above publication as the illustrated embodiment, the rising airflow of the gas that blows through the dust collecting chamber of a general electrostatic precipitator increases the concentration and strength uniformly throughout the dust collecting chamber. Use airflow.
It is intended to provide technology that solves the problem.

In the first aspect of the invention, one end of the dust collecting chamber incorporated in the electrostatic precipitator is supported by an insulating material and closed at one end, the other end is used as a water inlet, and a conductive pipe is connected to the water inlet. An electrostatic precipitator configured such that a pipe having spray nozzles arranged in a downward direction is a pipe having an elliptical section, and the spray nozzle is disposed downward on the pipe having an elliptical section.
According to the second aspect of the invention, one end of the dust collecting chamber incorporated in the electrostatic dust collector is supported by an insulating material at both ends, and one end is closed, the other end is a water inlet, and a conductive pipe is connected to the water inlet. It consists of a long hose wound in a spiral shape that conducts water supply connected through a mounting port and a conductive pipe of a pipe arranged with a spray nozzle that is connected downward, a supply source installed outside the dust collection chamber An electrostatic precipitator with a water supply channel sealed in a drying chamber.
According to the third aspect of the invention, two plates slidable in the ascending passage of the dirty gas blown from the gas blowing port of the dust collecting chamber incorporated in the electrostatic dust collecting device can be slid freely. This electrostatic precipitator is arranged as a rectifying plate overlaid on.

Since the present invention is configured as described above, first, the charged water atomization equipment including a pipe in which spray nozzles arranged between the earthed dust collecting plates are arranged downward is always provided between the dust collecting plates. In parallel with the dust collecting plate described above, it can be arranged horizontally without sagging.
Next, a conductive pipe attached to the water inlet of the charged water atomization equipment consisting of a pipe in which spray nozzles arranged with the insulating material supported at both ends in the dust collection chamber are arranged downward, and a water supply source A water supply path composed of a long hose wound up in a spiral shape connected through an attachment port can prevent leakage of high-voltage static electricity not only in the water supply path but also on the surface.
That is, the insulation of the water supply path to the conductive pipe and the attachment port can be ensured.
Furthermore, the rising air flow of the dirty gas can be evenly generated in the dust collection chamber, and the dirty gas can be uniformly purified at any location in the dust collection chamber.

  The present invention is an invention in which the drawbacks of the electrostatic precipitator of the construction type described in the Japanese Patent Publication No. 52-25590 as an illustrated embodiment are improved. That is, the basic configuration of the electrostatic dust collecting apparatus of the present invention is arranged outside the dust collecting chamber 1 and the dust collecting chamber 1 provided with electrostatic dust collecting equipment incorporated in the electrostatic dust collecting apparatus as shown in FIG. It consists of a power source 2 and a water supply source (not shown).

  The dust collecting chamber 1 constituting the electrostatic dust collecting device blows in dirty gas from below as shown by arrows, and the blown gas passes through the electrostatic dust collecting equipment disposed in the dust collecting chamber 1. The gas is purified and blown upward.

  As shown in FIG. 2, the electrostatic dust collecting equipment incorporated in the dust collecting chamber 1 is arranged in a plurality of rows with a plurality of grounded dust collecting plates 3 facing each other. Between each of the opposing dust collecting plates 3 arranged in several rows, one end is closed, the other end is used as a water injection port, and the charged water atomization equipment 4 consisting of pipes with spray nozzles arranged downwards is attached to both ends. It is supported by an insulating material 7 and arranged.

  In a water injection port (not shown) at the other end of the charged water atomization equipment 6 composed of a pipe 5 in which spray nozzles 4 supported by the insulating material 7 installed in the dust collection chamber 1 are arranged downward. A conductive pipe 8 for charging high-pressure static electricity connected by a power source 2 and a cable 21 installed outside the dust collection chamber 1 is attached, and a water supply source (outside the dust collection chamber 1 is attached to the conductive pipe 8). The water supply path 9 which consists of the elongate hose wound in the spiral shape which supplies the water from (not shown) is comprised.

  The electrostatic dust collection in the dust collection chamber 1 described above is performed at a high pressure on the conductive pipe 8 attached to the water inlet of the charged water atomization equipment 6 composed of the pipe 5 in which the spray nozzles are arranged downward from the power source 2 through the cable 21. Charges static electricity. From a water supply source (not shown) to a charged water atomization equipment 6 comprising a pipe in which spray nozzles 4 are arranged downward from a conductive pipe 8 through a water supply path 9 comprising a long hose in which water is spirally wound. Send it in.

  The above-described water passes through the conductive pipe 8 attached to the water inlet of the charged water atomization equipment 6 composed of pipes in which the spray nozzles 4 are arranged downward, and constitutes the above-described charged water atomization equipment 6. As shown in FIG. 2, the spray nozzle 4 is fed into a pipe 5 in which spray nozzles 4 are arranged downward, and is arranged downward in the pipe 5 configured as the charged water atomization equipment 6 as charged water. Flying toward the grounded dust collecting plate 3 arranged in the dust collecting chamber 1. At this time, an electric field is formed between the nozzles 4 arranged downward in the pipe 5 and the grounded dust collecting plate 3.

Under this condition, dirty gas is blown from below the dust collection chamber. The dirty gas rises above the dust collection chamber 1. When the rising dirty gas passes through the electric field formed by the electrostatic dust collecting device, the fine particles contained in the dirty gas are charged and are applied to the dust collecting plate 3 together with the atomized water. Adhere to.
That is, it is a clean gas electrostatically collected by the electrostatic dust collecting device incorporated in the dust collecting chamber 1 and blows out from the dust collecting chamber.

One of the improvements is not only the electrostatic precipitator described in Japanese Patent Publication No. 52-25590 as the illustrated embodiment, but generally the dust collecting chamber of the electrostatic precipitator is a spray nozzle disposed in the dust collecting chamber. The pipes constituting the charged water atomization equipment composed of pipes arranged in a downward direction are generally pipes having a circular cross section.
This configuration is also described as an example in the above-mentioned Japanese Patent Publication No. 52-25990.
As shown in FIG. 2, the pipe 5 constituting the charged water atomization equipment 6 in which the spray nozzles arranged in the dust collection chamber of the present invention are arranged downward is an elliptical cross section.

The pipes constituting the charged water atomization equipment composed of the pipes in which the spray nozzles described so far are described in the above publication as illustrated examples have the following drawbacks.
That is, the pipe in which spray nozzles configured as charged water atomization equipment described in the above publication are arranged in a downward direction has a circular cross section. There is an inconvenience of bending due to the weight of the spray nozzles arranged downward.

  The pipe which comprises the charged water atomization equipment 6 which consists of the pipe 5 which arranged the spray nozzle 4 of this invention downwardly used the pipe which made the cross section elliptical. As a result, there is no inconvenience of bending due to the weight of the spray nozzles arranged downward.

  The second improvement is a charged water atomization equipment consisting of a pipe in which spray nozzles arranged downward are arranged in a dust collection chamber of an electrostatic precipitator described in Japanese Patent Publication No. 52-25590. It is between a conductive pipe attached to the water inlet of the constituent pipe and a water supply source arranged outside the dust collection chamber, and is a long length wound in a spiral shape that sends water from the water supply source to the conductive pipe. In the present invention, as shown in FIG. 1, the water supply path composed of a hose is configured by accommodating the connection port between the conductive pipe and the water supply source (not shown) in a drying chamber cut off from the outside air.

Conductive pipe and water supply source connected to the water inlet of the pipe constituting the charged water atomization equipment consisting of pipes with downwardly arranged spray nozzles arranged in the dust collection chamber incorporated in the conventional electrostatic precipitator The above-mentioned water supply path arranged between the two is provided in the water supply path in order to prevent high-voltage static electricity charged in the conductive pipe from leaking to the power source through the water flowing in the water supply path. In order to prevent leakage by making the best use of the electric resistance of the flowing water, the water supply path is a long hose, and considering the installation area of the water supply path of the hose, the aforementioned hose is wound up in a spiral shape The installation area is reduced.
This configuration is described as an embodiment shown in Japanese Patent Publication No. 52-25590.

  In consideration of safety, an insulating agent is applied to the surface of the water supply path.

However, the water supply path in which the long hose is wound up in a spiral manner always flows water in the water supply path, so the surface of the conductive pipe and the surface of the water supply path that are in contact with the outside air There is a risk that condensation occurs in the surface of the water supply path between the conductive pipe and the water supply source due to the continuous condensation.
In order to prevent this danger, a means for winding the water supply path around the insulating agent at a predetermined interval is provided to prevent the above-described dew condensation from continuing, or the water supply path described above is contained in insulating oil. Means for immersing in are taken.

  However, in the former means, the means for preventing leakage of the water supply path from the conductive pipe to the water supply source is not perfect, and the latter means that the apparatus and management require a large amount of cost. Inconvenience arises.

In the present invention, in order to eliminate the inconvenience described above with respect to the water supply path 9 arranged between the conductive pipe 8 and the water supply source (not shown), the following means are taken.
The means is to apply an insulating agent to the conductive pipe 8,
Apply an insulating agent to the connection port of the water supply path 9 of the long hose wound up in a spiral connected to the water supply source,
A measure was taken to hermetically enclose the conductive pipe 8 to the connection port with the water supply source of the water supply path 9 of the long hose wound up in a spiral manner in a drying chamber 10 that shuts off the outside air.
Therefore, no condensation occurs on the surface of the conductive pipe 8 or the surface of the water supply path 9.
Therefore, the water supply path 9 connecting the conductive pipe 8 to the water supply source is completely insulated.

The improvement point 3 is that the dust collection chamber 1 of the present invention has a mechanism in which the dirty gas blown into the dust collection chamber is lifted evenly throughout the dust collection chamber.
That is, a rectifying mechanism 30 is provided above the inlet of the dirty gas provided below the dust collection chamber 1, and the dirty gas blowing part and the purifying part are separated by the rectifying mechanism 30. .

The rectifying mechanism 30 is formed by providing target through holes 32 and 34 on upper and lower plates 31 and 33 as shown in FIG.
That is, when the through holes 32 and 34 of the two plates 31 and 33 are vertically aligned, the through holes are fully opened. When the two plates 31 and 33 are slid to make the through holes 32 and 34 alternate, the through holes are closed.
The size of the through hole can be adjusted by sliding adjustment of the two plates 31 and 33 by manual or automatic means. Therefore, depending on the state of the dirty gas blown into the dust collection chamber, the rising state of the dirty gas is dispersed by adjusting the sliding state of the two plates, or the air volume is adjusted to equalize the dust collection chamber. An updraft can be created.

The electrostatic precipitator described in Japanese Patent Publication No. 52-25590 as an illustrated embodiment, as well as the dust collecting chamber arranged in the conventional electrostatic precipitator, blows dirty gas into the dust collecting chamber. However, an air volume adjusting mechanism is arranged at the inlet of the dust collecting chamber. However, there is no dust collection chamber provided with a mechanism for uniformly raising the dirty gas blown into the dust collection chamber over the entire dust collection chamber.
Therefore, the dirty gas blown into the dust collection chamber exhibits a phenomenon in which it rises by hitting the side wall opposite to the blowing port.
In the state where this phenomenon occurs, the upward flow of the dirty gas generates a stronger upward flow on the side of the side wall facing the blowing port.
That is, the ascending force of the ascending air current can be increased and decreased between the side of the side wall facing the blowing port and the front side of the side wall.
Due to the rising airflow, the dirty gas passing through the dust collecting chamber is disadvantageously difficult to be uniformly collected by the dust collecting mechanism disposed in the dust collecting chamber.
The present invention does not cause such inconvenience.

Configuration schematic diagram of electrostatic precipitator of the present invention Schematic diagram showing the arrangement of electrostatic dust collecting equipment in the dust collecting chamber of the electrostatic dust collecting apparatus of the present invention. Configuration perspective view of a rectifying mechanism disposed in a dust collection chamber of the electrostatic dust collector of the present invention

Explanation of symbols

1. Dust collection chamber Power supply Dust collector 4. 4. Spray nozzle Pipe 6. 6. Charged water atomization equipment Insulating material
8). 8. Conductive pipe Water supply path 10. Drying chamber 30. Rectification mechanism 31.33. Plate 32.34. Through hole

Claims (3)

  Pipes with grounded dust collectors facing each other and arranged in several rows, with the ends closed between the respective grounded dust collectors, the other end serving as a water inlet, and a spray nozzle arranged downwards Both ends are supported by an insulating material, and a dust collection chamber is constructed in which dirty gas is blown from below and purified gas is blown out from above, and is supported by the insulating material disposed in the dust collection chamber. A supply source installed outside the dust collection chamber with a conductive pipe that charges high-pressure static electricity from the power supply installed outside the dust collection chamber at the water inlet of the other end of the pipe with the spray nozzles arranged downward In an electrostatic precipitator that is connected to a water supply path composed of a long hose that is spirally wound to supply water connected through a mounting opening, both ends of the dust collection chamber are supported by an insulating material. Close one end and water the other end A pipe in which a spray nozzle formed by connecting a conductive pipe to a water inlet is arranged downward is a pipe having an elliptical section, and the spray nozzle is disposed downward on the pipe having an elliptical section. An electrostatic precipitator characterized by that.   Pipes with grounded dust collectors facing each other and arranged in several rows, with the ends closed between the respective grounded dust collectors, the other end serving as a water inlet, and a spray nozzle arranged downwards Both ends are supported by an insulating material, and a dust collecting chamber is constructed in which dirty gas is blown from below and purified gas is blown out from above, and is supported by the insulating material provided with the dust collecting chamber. A supply source installed outside the dust collection chamber with a conductive pipe that charges high-pressure static electricity from the power supply installed outside the dust collection chamber at the water inlet of the other end of the pipe with the spray nozzles arranged downward In an electrostatic precipitator that is connected to a water supply path composed of a long hose that is spirally wound to supply water connected through a mounting opening, both ends of the dust collection chamber are supported by an insulating material. Close one end and water the other end Spiral shape that supplies water connected through a mounting port and a conductive pipe of a pipe in which a spray nozzle formed by connecting a conductive pipe to the water inlet is arranged downward and a supply source installed outside the dust collection chamber An electrostatic precipitator characterized in that a water supply path composed of a long hose entrained in a container is sealed in a drying chamber.   Pipes with grounded dust collectors facing each other and arranged in several rows, with the ends closed between the respective grounded dust collectors, the other end serving as a water inlet, and a spray nozzle arranged downwards Both ends are supported by an insulating material, and a dust collecting chamber is constructed in which dirty gas is blown from below and purified gas is blown out from above, and is supported by the insulating material provided with the dust collecting chamber. A supply source installed outside the dust collection chamber with a conductive pipe that charges high-pressure static electricity from the power supply installed outside the dust collection chamber at the water inlet of the other end of the pipe with the spray nozzles arranged downward In an electrostatic precipitator that is connected to a water supply path consisting of a long hose that is wound in a spiral shape that supplies water connected through a mounting opening, the air is blown from the gas inlet of the dust collecting chamber. Dirty gas rising passage, through hole An electrostatic precipitator characterized by being arranged as a rectifying plate formed by slidably superposing two plates perforated on the object.

Images