KR20100093810A - Electric dust collector using carbon fiber - Google Patents

Abstract

PURPOSE: An electric dust collector using carbon fiber is provided to process polluted air including gas of strong acid while improving the performance of the electric dust collector. CONSTITUTION: An electric dust collector using a carbon fiber is comprised of: a charging unit charging polluted air; and an electric dust collector collecting charged minute particle. A charging unit(12a) comprised of a carbon fiber receives high voltage from a voltage supply unit and generates ion. An electric dust collector(20) collets minute particle which is charged by static electricity. The electric dust collector having a dust collecting unit(22) thereon has a washing apparatus(30).

Description

Electric Dust Collector Using Carbon Fiber

The present invention relates to an electrostatic precipitator using carbon fibers that can suppress the generation of ozone, reduce power consumption, and can treat contaminated air contained in a large amount of acidic gas.

There are various devices that remove harmful substances such as fine particles from polluted air and treat them as clean air. Recently, the most widely used devices charge fine particles in contaminated air by corona discharge with good dust collection efficiency. Electrostatic precipitator for collecting dust is widely used.

A general electrostatic precipitator charges particles (fine particles) in air contaminated by corona discharge generated between discharge electrode and ground electrode by applying high high voltage, and collects the charged fine particles having the polarity by moving them into the electric field. The electrostatic precipitator using the corona discharge generates a corona discharge as shown in FIG. 1 to discharge the fine particles, a ground electrode 2 corresponding to the discharge electrode 1, and a high voltage to the discharge electrode 1. An electrostatic force is generated between the charged portion A made of a high voltage generator 3 to be applied and a plurality of dust collecting plates 4 for collecting fine particles charged in the charged portion A and the dust collecting plates 4. The filter for pre-treatment which consists of the electric dust collection part B provided with the voltage application device 5 which applies a voltage to (4), and which processes the contaminated air which flows in and installs in the front end of the said electric charge part. It is provided on the rear end of the dust collecting section and also the filter is further provided for the processing after the final treatment.

The electrostatic precipitator primarily processes relatively large fine particles in the pretreatment filter, and contaminated air including the fine particles passing through the pretreatment filter is disposed between the discharge electrode and the ground electrode by a current applied from the high voltage generator of the charge unit. Corona discharge is generated, and the fine particles contained in the contaminated air introduced by the corona discharge are charged. The charged microparticles are introduced into the dust collecting unit, the introduced microparticles are collected in the dust collecting plate by the electric field, and the rest are discharged to the outside through the post-treatment filter.

The conventional electrostatic precipitator which generates a corona discharge in the discharge electrode part by applying a high voltage of the positive electrode or the negative electrode between the discharge electrode and the counter ground electrode has a good dust collection efficiency, but has various disadvantages as follows.

That is, the conventional electrostatic precipitator ionizes the air (fine particles) by corona discharge generated by high voltage, firstly, generates a large amount of ozone, and secondly, in the process of ionizing harmful gases when treating other harmful gases. Secondary pollutants such as Nox, Sox, acidic materials or aldehydes are generated. Third, the higher the voltage is applied to the discharge electrode for the particle collection efficiency, the current is also increased as the voltage rises, which leads to power consumption. There are many disadvantages, and fourth, there is a disadvantage that a metallic discharge electrode and a ground electrode are required for corona generation. That is, since the discharge electrode and the ground electrode are metallic, corrosion is easily caused by the strong acidic harmful gas from the semiconductor or LCD manufacturing process, which causes a lot of problems in durability, and thus causes the use of the electrostatic precipitator.

Like the first disadvantage, there is a disadvantage that the utilization range is not wide because it is not used in the indoor space by a large amount of ozone generated by the corona discharge. In other words, the electrostatic precipitator using the corona discharge has a disadvantage that it cannot be introduced into the room by purifying the indoor air such as indoor space and subway station.

If the conventional electrostatic precipitator is to be installed in a place where a lot of people gather, there is a disadvantage in that a post-treatment device that treats ozone must be installed separately. Since the filter used in the device is not permanent and needs to be replaced periodically, the cost of maintenance increases.

In addition, a conventional electrostatic precipitator using corona discharge requires a discharge electrode of metal and a ground electrode of a corresponding metal to generate a corona discharge. There is this.

The present invention has been invented to solve the above disadvantages, it is conventionally contaminated by generating a large amount of ions even at a voltage lower than the high voltage applied to the discharge electrode and the ground plate corresponding to the discharge electrode is installed to charge the fine particles through a corona discharge An object of the present invention is to provide an electrostatic precipitator using carbon fiber, which is configured to charge fine particles in air, thereby suppressing ozone generation and reducing power consumption.

In addition, an object of the present invention is to provide an electrostatic precipitator using carbon fibers capable of treating a large flow of contaminated air.

In addition, it is an object to improve the performance of the electrostatic precipitator by increasing the efficiency of the electrostatic precipitator.

It is also an object to provide an electrostatic precipitator capable of treating contaminated air containing strongly acidic gases.

Electrostatic precipitator using the carbon fiber of the present invention to achieve a variety of the above object, consists of a charging unit for charging the incoming contaminated air, and an electrostatic precipitator for collecting the fine particles charged in the charging unit to charge the polluted air In the electrostatic precipitator to collect the fine particles by

A charging unit provided with an ion generator formed of carbon fibers for generating ions by receiving a high voltage from the voltage applying device;

Including an electric dust collector is installed dust collecting plate for collecting the fine particles charged in the charged portion with electrostatic force,

The electrostatic precipitating unit is configured to further install a washing device for cleaning by spraying the washing water to the dust collecting plate for collecting the fine particles.

One or more diaphragms may be provided inside the charged body to be divided into two or more threads, and each chamber may be provided with an ion generator made of carbon fiber.

The charging unit may be provided with a protective device for protecting the carbon fiber from the fine particles by injecting air, the protective device to prevent the contact between the carbon fiber and the fine particles by continuously supplying air to the carbon fiber, or intermittent Air can be sprayed to remove the fine particles attached to the carbon fiber can be regenerated.

The air used for the protection device uses the discharged air discharged by being treated in the external air or electrostatic precipitator,

The washing apparatus includes a washing water tank for storing washing water, a pump for circulating the washing water in the washing water tank, and a spray nozzle for spraying the washing water circulated by the pump, respectively, and the dust collecting plate is cleaned. It is preferable that the washing water sprayed from the device is installed to be inclined to flow down with the collected fine particles.

Electrostatic precipitator using the carbon fiber made as described above by using the ion generator made of carbon fiber to generate ions even at a lower voltage than the conventional electrostatic precipitator to charge the fine particles to prevent the generation of ozone, can reduce the power consumption It works. As the generation of ozone is removed as described above, there is an advantage that can be installed even without a special additional device for treating ozone even where the exhaust gas is introduced into a place where a person is.

In addition, the charge unit may be divided into a plurality of chambers, and an ion generator may be installed in each of the chambers to process a high concentration of fine particles contained in a large flow rate of contaminated air or contaminated air. .

In addition, the carbon fiber has the advantage that it can be used even in the presence of a strong acidic harmful gas by conventionally do not need a metallic discharge electrode and the corresponding metallic ground electrode during the corona discharge.

In addition, the protective device for the carbon fiber is installed, it is characterized in that the carbon fiber is prevented from deterioration of ions generated by contamination by the fine particles.

In addition, since the dust collecting plate of the dust collecting part is made of a corrosion resistant material, the dust collecting plate is prevented from being corroded by acidic gas, so that the dust collecting plate can be used in a place where strong acidic gas is discharged.

In addition, by installing a cleaning device for cleaning the dust collecting plate of the dust collector has a feature that can increase the efficiency of the electrostatic precipitator by increasing the dust collecting effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

2 is a schematic diagram of an electrostatic precipitator using carbon fiber which is an embodiment of the present invention, and FIG. 3 is a schematic diagram of an ion generating apparatus using carbon fiber used in the electrostatic precipitator using the carbon fiber of the present invention. 4 to 6 is a side schematic view of the charged portion of the electrostatic precipitator using the carbon fiber.

As shown in FIG. 2, the electrostatic precipitator using the carbon fiber of the present invention generates a large amount of ions and is installed at the rear end of the charged part 10 and the charged part 10 to charge the fine particles contained in the contaminated air. And the electrostatic precipitator 20 which collects the fine particles charged in the charged part 10 with electrostatic force, and a pretreatment filter (not shown) which is generally used is installed at the front end of the charged part 10, and then A processing filter (not shown) may be further installed at the rear end of the electric dust collector 20.

The charged part 10 is an ion generator 12 composed of a body 11 for guiding contaminated air, a carbon fiber 12a installed inside the body 11 to generate ions, and the ion generator. And a voltage applying device 13 for applying a high voltage to the reference numeral 12.

That is, when a high eye (current) is supplied from the voltage applying device 13 to the carbon fiber 12a of the ion generator 12, a large amount of ions are generated at the end of the carbon fiber 12a.

The ions generated at the end of the carbon fiber 12a generates (+) ions or (-) ions depending on the type of current applied from the voltage applying device 13.

The body 11 is usually made of a square tube, a circular tube, it may be made of a variety of tubes, such as a polygonal tube, it is formed of a metallic or non-metallic material.

When treating contaminated air containing strongly acidic gases, it is desirable to use non-metallic materials to prevent corrosion.

The body 11 may be formed integrally with or separate from the body 21 of the electric dust collecting part 20 to be rearranged, and in the case of a metal material, may be grounded or not grounded.

The ion generator 12 is a carbon fiber (12a) is composed of a single strand or a plurality of strands bundle.

When ions are generated by applying a voltage (current) to the ion generator 12 made of the carbon fiber 12a, a large amount of ions may be produced even at a voltage lower than a corona discharge generated by applying a high voltage between the discharge electrode and a ground electrode corresponding thereto. By suppressing the occurrence of ozone, the generation of ozone is suppressed and the power consumption is reduced. In addition, the carbon fiber 12a has a feature of not requiring a ground electrode when generating ions by applying a voltage (current). As a result, it is possible to treat contaminated air containing a strong acid gas by not including a metal ground electrode.

One of the ion generators 12 is installed in the central portion of the body 11, or install a rod for installation in the central portion of the body 11, a plurality of installation at equal intervals in the form of radiation on the rod for installation. Can be.

The electric dust collecting part 20 is washed to wash the body 21, a plurality of dust collecting plates 22 installed inside the body 21, the high voltage applying device 23 and the dust collecting plate 22 as shown in FIG. Device 30.

Between the plurality of dust collecting plates 22, an electrostatic force is generated by a voltage (current) applied from the high voltage applying device 23 to collect the fine particles charged in the charging unit 10.

The body 21 is usually preferably formed in the same cross-sectional shape as the body 11 of the charged portion 10, it is formed of a metallic or non-metallic material.

11 shows the dust collecting plate 11, and the dust collecting plate 22 is usually formed of a metal plate as shown in FIG. 11A. However, in order to prevent corrosion from acid gas, a metal plate 22a is formed inside as shown in FIG. 11B, and a non-metallic layer 22b is formed outside the metal plate 22a, or a plastic plate as shown in FIG. 11C. It is made of a plate coated with a conductive material (22d) on the 22c or an electrostatic filter plate that charges the surface as shown in Figure 11d, or of a corrosion-resistant carbon fiber reinforced plastic (CFRP) material Consists of plates.

When the electrostatic filter plate is used as the dust collecting plate 22 as shown in FIG. 11D, the high voltage applying device 23 for applying a voltage is not required.

The washing apparatus 30 is circulated by the washing water tank 31 storing the washing water, the pump 32 circulating the washing water in the washing water tank 31, and the pump 32 as shown in FIG. It is composed of a spray nozzle 33 for injecting the washing water to each of the dust collecting plate 22, the cleaning water is intermittently spraying the cleaning water to the dust collecting plate 22 by a pump 32 which operates at a predetermined interval. Clean the fine particles collected in). At this time, the dust collecting plate 22 is preferably installed to be inclined so that the fine particles flow down with the washing water sprayed to be washed. The pump 32 is usually operated at predetermined intervals by a timer.

In the electrostatic precipitator using the carbon fiber of the present invention, the polluted air flowing into the charged portion 10 is generated from the ion generator 12 by the high voltage (current) applied by the voltage applying device 13. The fine particles in the air contaminated by the battery are charged, and the charged microparticles are collected in the dust collecting plate 22 provided in the electric dust collecting unit 20 installed at the rear end of the charging unit 10. The electrostatic force is generated between the dust collecting plate 22 by the voltage (current) applied from the high voltage application device 23 when the dust collecting plate 22 is collected, thereby increasing the dust collecting efficiency of the charged fine particles, the dust collecting plate 22 The dust collecting efficiency is lowered by the fine particles collected in the) to prevent the dust collecting efficiency from being lowered by periodically cleaning and regenerating the dust collecting plate 22.

Figure 4 shows another embodiment of the charging unit of the present invention, the carbon fiber by supplying air to the ion generator 12 installed in the charging unit 10 of the electrostatic precipitator using the carbon fiber of the present invention described above The protection device 14 which can protect 12a from microparticles is further installed.

The protection device 14 continuously or intermittently supplies the air supplied from the air supply pipe 14a through the nozzle 14b so that the air contaminated by the air supplied from the nozzle 14b adheres to the carbon fiber 12a. This prevents the generation of ions from lowering.

The air used for the protection device 14 uses the treated air discharged to the dust collecting part 20 of the present invention, or uses purified external air. In other words, clean air is used.

When using the treated air discharged to the dust collector 20, the inlet of the air supply pipe (14a) is formed on the outlet side to use the air treated in the dust collector 20.

The protection device 14 continuously supplies the air supplied through the nozzle 14b to isolate the carbon fiber 12a and the contaminated air, thereby protecting the carbon fiber 12a, or intermittently spraying at a predetermined pressure. By removing the fine particles attached to the carbon fiber (12a) it is possible to regenerate the carbon fiber (12a).

Figure 5 shows another embodiment of the charge portion of the present invention, Figure 6 and Figure 7 is a schematic side view of the charge portion shown in FIG.

In the charged portion 10 shown in FIG. 5, one or more diaphragms 11a are provided inside the body 11 so that two or more chambers 11b are partitioned, and each chamber 11b generates ions. The ion generator 12 is installed.

Contaminated air introduced by partitioning into a plurality of chambers 11b by installing a diaphragm 11a inside the body 11 of the charged portion 10 is separately introduced into each chamber 11b. The polluted air introduced into each of the chambers 11b is charged by the ions generated by the ion generator 12 installed in each of the chambers 11b.

As the contaminated air is charged by the ions generated in the ion generator 12 in each chamber 11b, the charging efficiency of the fine particles becomes high, and the dust collection efficiency is high. This can be done more effectively.

The diaphragm 11a installed inside the body 11 may be partitioned into a plurality of seals 11b by installing a diaphragm 11a in a horizontal and vertical direction when the body 11 is rectangular as shown in FIG. 6. , If the body 11 is circular, as shown in Figure 7 by installing a plurality of diaphragm (11a) made of a circular tube is divided into a plurality of chambers (11b).

The shape of the diaphragm 11a installed inside the body 11 is a temporary example and may be installed inside the body 11 in various forms.

8 shows that the ion generator 12 using the long wire carbon fiber is installed in the charged portion 10,

9 and 10 are divided into a plurality of yarns (11b) by installing a diaphragm (11a) inside the body (11) of the charged portion 10, each of the yarns (11b) using a long wire carbon fiber It shows that the ion generator 12 is installed.

8 to 10, when a high voltage (current) is applied from the voltage applying device 13 to the ion generator 12 made of the long wire carbon fiber installed in the charging unit 10, the carbon fiber of the long wire has a large amount. Ions generate ions to charge the fine particles in the contaminated air flowing into the body 11 of the charged part 10, and the charged fine particles in the charged part 10 are collected on the dust collecting plate 22 of the electric dust collecting part 20. It will be collected.

1 is a schematic view of a conventional electrostatic precipitator.

Figure 2 is a schematic diagram of an electrostatic precipitator using carbon fiber showing a preferred embodiment of the present invention.

Figure 3 is a schematic diagram of the ion generating device using the carbon fiber used in the electrostatic precipitator using the carbon fiber showing a preferred embodiment of the present invention.

Figure 4 is a schematic view of the charge portion of the electrostatic precipitator using a carbon fiber showing another embodiment.

Figure 5 is a schematic view of the charge of the electrostatic precipitator using a carbon fiber showing another embodiment.

Figure 6 is a side schematic view of the charge portion shown in FIG.

FIG. 7 is a side schematic view of the charged portion shown in FIG. 5; FIG.

Figure 8 is a schematic diagram of the charge of the electrostatic precipitator using a carbon fiber showing another embodiment.

Figure 9 is a schematic view of the charge portion of the electrostatic precipitator using a carbon fiber showing another embodiment.

FIG. 10 is a side schematic view of the charged portion shown in FIG. 9; FIG.

11 is a cross-sectional view of the dust collecting plate of the electric dust collecting part of the present invention.

[Explanation of symbols on the main parts of the drawings]

10: charged part 11: body

12 ion generator 12a carbon fiber

13: voltage application device 14: protection device

20: dust collector 21: the body

22: dust collecting plate

30: washing device

Claims (7)

In the electrostatic precipitator consisting of a charge unit for charging the contaminated air flowing in, and an electrostatic precipitator for collecting the fine particles charged in the charged portion to charge the contaminated air to collect the fine particles, A charging unit 10 provided with an ion generator 12 including a carbon fiber 12a for generating ions by receiving a high voltage from the voltage applying device 13; Including the electric dust collector 20, the dust collecting plate 22 is installed to collect the fine particles charged in the charged portion 10 with electrostatic force, The electrostatic precipitator using the carbon fiber, characterized in that the electrostatic precipitator 20 is further provided with a washing device 30 for cleaning by spraying the washing water to the dust collecting plate 22 for collecting the fine particles. The method of claim 1, One or more diaphragms 11a are installed inside the charged part 10 body 11 to be partitioned into two or more seals 11b, Electrostatic precipitator using carbon fibers, characterized in that the ion generator (12) consisting of carbon fibers (12a) is installed in each of the seals (11b). The method according to claim 1 or 2, Electrostatic precipitator using carbon fiber, characterized in that the charge unit 10 is installed to protect the carbon fiber (12a) from the fine particles by spraying air. The method of claim 3, wherein The protection device 14 continuously supplies air around the carbon fiber 12a to prevent contact between the carbon fiber and the fine particles, or intermittently injects air to fine particles attached to the carbon fiber 12a. Electrostatic precipitator using a carbon fiber, characterized in that the dropping and regeneration. The method of claim 3, wherein The air used in the protection device 14 is an electrostatic precipitator using carbon fiber, characterized in that the discharge air is processed and discharged from the outside air or electrostatic precipitator. The method of claim 1, The washing apparatus 30 includes a washing water tank 31 storing washing water, a pump 32 circulating washing water in the washing water tank 31, and washing water circulated by the pump 32. Electrostatic precipitator using a carbon fiber, characterized in that composed of a spray nozzle 33 for injecting each dust collecting plate (22). The method of claim 1, The dust collector (22) is an electrostatic precipitator using carbon fiber, characterized in that the washing water sprayed from the cleaning device 30 is installed to be inclined to flow down with the collected fine particles.

Images