KR101222676B1 - Horizontal type wet electrostatic precipitator for treating the exhaust gas of the glass wool production line - Google Patents

Abstract

PURPOSE: A horizontal type wet electrostatic precipitator for processing exhaust in a glass wool production factory is provided to facilitate cleaning of dust collecting plates. CONSTITUTION: A horizontal type wet electrostatic precipitator(8) for processing exhaust in a glass wool production factory comprises a dust collecting structure, a plurality of dust collecting chambers(80), a perforated plate(85), a second wash water supplying tool, insulator boxes(81), and an air purge unit(810). The dust collecting structure has a gas inlet (8a) and a gas outlet (8b). The plurality of dust chambers is installed by being horizontally distanced inside the dust collecting structure. The exhaust gas successively passes through the dust chambers. [Reference numerals] (60) Pit; (AA) Gas exhaustion; (BB) Gas introduction; (C1,C2) Wash water

Description

Horizontal type wet electrostatic precipitator for treating the exhaust gas of the glass wool production line}

The present invention relates to a horizontal type wet electrostatic precipitator for the exhaust gas treatment of a glass wool production plant, and in particular, by installing a plurality of dust chambers in which dust is collected while the exhaust gas of the glass wool production plant passes through the dust collector structure in a horizontal direction. It easily removes dust from dust, phenol, formaldehyde and other substances emitted from the glass wool production plant by facilitating maintenance such as cleaning the dust collector plate directly inside the dust collector. A horizontal wet electrostatic precipitator specialized for the flue gas treatment of a glass wool production plant.

Glass wool refers to glass made of cotton wool by melting glass raw materials such as silica sand and cullet at a high temperature and spraying them with a centrifugal force through a nozzle or by scattering them with high speed steam. Glass wool as artificial mineral fiber is widely used as a thermal insulation material and a soundproofing material when it is molded by compression or resin bonding because soft and soft fibers are finely gathered. Since it is excellent in nonflammability, it can be used for fireproofing, insulation, It is widely used as a building material for apartments, houses, commercial buildings, factories and so on. In addition, glass wool can be easily cut with a simple tool such as a knife, and it can be produced in various sizes to suit the application, and thus it is widely used for a wide variety of applications such as ducts, sandwich panels, automobiles, ships, and home appliances. And glass wool is evaluated as a material that has excellent advantages in terms of energy conservation and environmental protection because contaminants such as freon gas and volatile organic compounds are rarely discharged unlike the existing organic insulating material made by refining petroleum several times have.

However, when glass wool used in the manufacturing process and dusts of glass wool are directly discharged into the atmosphere, there is a problem that serious environmental pollution occurs. In order to prevent such pollution, glass wool production plants use wet scrubbers, penthouses, dust boxes, and acid scrubbers to remove glass wool dust generated during the manufacturing process of glass wool. We use various environmental equipment such as acid scrubber, incinerator and bag filter. Wet wet precipitator (Wet) is especially used to remove the 'clean' caused by the adhesive component injected during the collecting process. An electrostatic precipitator device is used. Here, 'clean' means that the color of the smoke emitted from the chimney of the factory becomes blue due to the mixing of particulate matter, such as phenols, into the exhaust gas due to the adhesive component introduced during the glass wool collecting process.

On the other hand, there are three types of electrostatic precipitators, dry, wet, and semi-dry. Among them, dry collects dust particles in a dry state, and the collected dust is a method of removing dust collected from a collecting electrode by mechanical impact. Wet refers to a method of forming a water film on the surface of the dust collecting electrode and removing dust from the dust collecting plate by flowing it downward like water.

By the way, the dust in the blue smoke generated in the glass wool production plant is sticky due to the nature of the adhesive component as a causative material, it is impossible to separate from the dust collection electrode dry. For this reason, conventional glass wool production plants have attempted to remove the smoke by employing a wet electrostatic precipitator. Even with a wet electrostatic precipitator, dust does not stick to the dust collecting electrode (dust collecting plate) over time, so dust collection efficiency is improved. There was a problem of deterioration. When the dust collector is stuck to the dust collecting electrode and thus the dust collector cannot perform the dust collecting performance properly, the only way is to manually enter the dust collector and remove the dust residues. Unfortunately, all the wet electrostatic precipitators applied to the existing glass wool production plant are vertical. Because it was a vertical type, it was difficult or impossible for people to enter it, so it was not possible to perform cleaning / maintenance work. After all, the existing wet electrostatic precipitator was impossible to maintain after a few months of installation. There was a problem that does not become a lump.

Therefore, if the environmental facilities applied to the existing glass wool production plant were evaluated by the pollutants to be removed, it can be said that the dust of glass wool was successfully achieved even with the existing facilities. It is an environmentally serious problem that the phenolic components emitted are not properly removed and released as they are.

The vertical wet electrostatic precipitator installed in the existing glass wool production plant has a structure in which a plurality of parallel dust collecting plates are installed vertically in the tower type dust collector structure, and as the exhaust gas rises from the bottom up between these dust collecting plates, (See Registered Utility Model Publication No. 0131362 (December 15, 1998)). By the way, the vertical wet electrostatic precipitator is not only very long so that the height of the dust collecting plate itself is at least 10 m, but also a very narrow space between the dust collecting plates is about 30 cm. The area that the hose touched was very limited, so there was a problem that cleaning itself was impossible.

As such, the conventional vertical wet electrostatic precipitator is difficult to use in a place where a large amount of sticky dust is discharged, such as a glass wool production plant, due to the disadvantage that manual cleaning / repair is not possible at all once installed. In order to continuously and reliably remove the smoke generated in the production process of glass wool, a new type of wet electricity designed to allow people to enter the dust collector structure and easily perform cleaning and maintenance work. There was a need to develop a dust collector.

In order to solve the above problems, the present invention facilitates maintenance activities such as cleaning the dust collecting plate by directly entering the inside of the dust collector by installing a plurality of dust collecting chambers in which the dust is collected while exhaust gas passes horizontally in the dust collector structure. To provide a horizontal wet electrostatic precipitator for exhaust gas treatment of a glass wool production plant, which is capable of continuously removing well-being of phenolic substance components emitted from the glass wool production plant. It is done.

In addition, in order to solve the above problems, the present invention manufactures the shape of the dust collecting plate itself in a flat plate type with no bends at all, so that dusts attached to the dust collecting plate when the worker enters the dust collector structure and perform the cleaning work are washed with high pressure water. It is an object to provide a horizontal wet electrostatic precipitator that can be easily removed by

In addition, the present invention is to install the dust collection chambers in the dust collector structure in the horizontal direction spaced apart in the front and / or rear of the dust collecting chamber by installing a multi-stage work platform as a passage for the cleaning workers can move the cleaning worker for all areas It is an object of the present invention to provide a horizontal wet electrostatic precipitator which is accessible and cleaned.

Horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant provided by the present invention to achieve the above object, the flue gas containing phenols generated in the glass wool (glass wool) production plant proceeds in the horizontal direction A dust collector structure 801 configured to have an inner space; A gas inlet 8a installed at one side of the dust collector structure 801 and into which the exhaust gas is introduced into the dust collector structure 801; A plurality of dust collecting chambers 80 which are spaced apart from each other in the horizontal direction in the dust collector structure 801 so that the exhaust gas introduced through the gas inlet 8a may pass sequentially; And a gas outlet 8b installed at the other side of the dust collector structure 801 and exhaust gas passing through the dust collecting chambers 80 is discharged to the chimney, wherein each dust collecting chamber 80 is vertically provided. And a plurality of dust collecting plates 200 disposed in parallel to each other, and a plurality of discharge electrodes 300 vertically installed in a space between the dust collecting plates 200, and the dust collecting plates 200 of the dust collecting chambers 80. ) And the discharge electrodes 300 are connected by the high voltage unit 82 to generate a corona discharge between each other so that dust in the exhaust gas is attached to the dust collecting plates 200, and the first washing water supply means is connected to the dust collecting chamber ( Spraying the wash water to 80 to remove the contaminants attached to the dust collecting plate (200).

In particular, the horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant provided by the present invention to achieve the above object, the operator in front and / or rear of the dust collecting chamber 80 where dust is collected in the exhaust gas Work paths 400 that can walk are installed, and when the overall height of the dust collecting plate 200 is divided into a plurality of sections, the work paths 400 are installed in each of the sections, so that the worker It is characterized in that the work path 400 can be approached or cleaned by direct access to all areas of the dust collecting plates 200 or by indirect cleaning means.

And the horizontal type wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant provided by the present invention to achieve the above object, when the wash water and / or high pressure steam is applied by configuring the overall shape of the dust collecting plate 200 flat Dust debris attached to the dust collecting plate is characterized in that it can be easily removed.

Horizontal wet electrostatic precipitator for exhaust gas treatment of a glass wool production plant according to the present invention is installed by separating a plurality of dust chambers in a horizontal direction in a dust collector structure arranged long in the horizontal direction to clean a dust collector plate directly into the dust collector. Because of the nature of the glass wool manufacturing process, it is possible to remove the dust containing adhesive components on the dust collecting plate and clean it by periodic cleaning, so that the efficiency of the dust collector can be stably maintained in good condition. There is an advantage.

In addition, the horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention does not need to be made to have a length of several tens of meters as in the case of the vertical wet electrostatic precipitator because of the horizontal structural characteristics of the dust collecting plate. It is not necessary to reinforce the dust collecting plate by the method such as bending, etc., and it can be manufactured in the flat form by simply polishing the surface, so there is no bending or welding surface on the surface and the dust collecting plate does not adhere to the dust collecting plate. The dust attached to it is easily removed from the dust collecting plate has the advantage of easy cleaning by the wash water. In addition, the present invention has the advantage that there is no welding or bending of the dust collecting plate as compared to the conventional vertical wet electrostatic precipitator, reducing the material / manufacturing cost of the dust collecting plate to lower the installation cost and increase the economics.

In addition, the horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention allows the cleaning workers to access all areas of the dust collecting plate by the work platforms installed in front and rear of each dust collecting chamber to facilitate the cleaning and cleaning. There is an advantage that can reduce the time.

In conclusion, the present invention is to improve the wet electrostatic precipitator in a horizontal type to be suitable for the characteristics of the glass wool production plant in which a large amount of sticky dust material is discharged, a wet electrostatic precipitator device specialized for removing the smoke of the glass wool production plant. Can be.

1 is a block diagram of a glass wool production line and an exhaust gas treatment line of a glass wool production plant to which a horizontal wet electrostatic precipitator 8 according to the present invention is applied.
Fig. 2 is an overall configuration diagram of a production line and an exhaust gas treatment line of a glass wool production plant corresponding to Fig. 1.
FIG. 3 is an enlarged configuration diagram of a portion A shown in FIG. 2, showing the configuration of the horizontal wet electrostatic precipitator 8 in more detail.
4 is a front view of a horizontal wet electrostatic precipitator 8 for exhaust gas treatment of a glass wool production plant according to the present invention.
5 is a plan view of a horizontal wet electrostatic precipitator 8 for exhaust gas treatment of a glass wool production plant according to the present invention.
Fig. 6 is a side view of the horizontal wet electrostatic precipitator 8 according to the present invention viewed from the gas inlet 8a side.
7 and 8 are perspective views schematically showing the configuration of the dust collecting chamber 80 inside the horizontal wet electrostatic precipitator 8 according to the present invention.
FIG. 9 is a schematic front view showing the supporting structure of the discharge electrode 300 and the spraying range of the washing water in the horizontal wet electrostatic precipitator 8 of the present invention, and FIG. 10 shows the state of FIG.
FIG. 11 is a view illustrating a path through which washing water is recycled and circulated in a flue gas treatment line of a glass wool production plant to which the present invention is applied, and FIG. 12 illustrates water (wash water) in an example of an actual glass wool production plant to which the present invention is applied. Shows the flow rate value and the balance relationship.
13 and 14 is a dust cleaner attached to the collecting plates 200 to climb on the working passage 400 in the horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention (P) A scene of cleaning the fields 230 and 231 is shown.
15 to 17 are front, plan and side views of a horizontal type wet electrostatic precipitator 8 for exhaust gas treatment of a glass wool production plant according to a second embodiment of the present invention, and gas inlets 851a-1 and 852a. -1) shows a case in which two parts are installed.
18 shows an exhaust gas treatment line of another type of glass wool production plant to which the horizontal wet electrostatic precipitator 8 of the present invention is applied.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and effect of the horizontal type wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention.

1 is a block diagram of a glass wool production line and an exhaust gas treatment line of a glass wool production plant to which a horizontal wet electrostatic precipitator 8 according to the present invention is applied, and FIG. The overall configuration of the production line and flue gas treatment line.

First, referring to FIGS. 1 and 2, the overall production process of glass wool is first blended with raw materials of natural sand, recycled glass, sodium carbonate and limestone, which are the basic raw materials of glass wool, and then 1500-1600 in glass melting furnace (1). Melted at a high temperature of ℃, the glass melted in the glass melting furnace (1) moves through the fiberization zone along the channel, and then passes through a rotating cylinder (spinner, 3) with several holes, the temperature is rapidly cooled to a diameter of 4-9 It is made in the form of fine fibers having a thickness of 50 to 200 mm. The glass fiber 3c drawn by the spinner 3 is mixed with an adhesive (binder, 3b) injected by the nozzle 3a and then dropped onto a forming conveyor 4. The collected glass fiber 3c Is placed in an oven (10), i.e., a drying oven, at 200 to 250 DEG C in a whitening state and is cured by the foaming conveyor (4). At this time, when the glass fiber 3c has the shape and thickness of the product, the binder 3b injected to the glass fiber 3c is cured on the entire glass wool and becomes yellowish. Thereafter, the glass wool from the oven 10 is cooled to room temperature in the cooler 11, and then is cut into a glass wool product 15 through a cutting operation.

In FIG. 1, reference numeral 30 denotes a spinner 3 and a foaming conveyor 4, which are collectively referred to as a "face plate", and reference numeral 4a denotes a drive roller 4a for rotating the forming conveyor 4.

Meanwhile, the exhaust gas treatment facility of the glass wool production plant will be described. First, the exhaust gas discharged from the glass melting furnace 1 is discharged to the chimney 1a via the semi-dry gas treatment facility 2. Here, 'semi-dry gas treatment facility' is a facility that combines a stabilizer and an electrostatic precipitator, and the stabilizer injects water into the hot gas in the form of a mist (mist) to remove the gas such as SOx in the gas, It is a device that makes it possible to collect dust. Since the exhaust gas discharged from the glass melting furnace 1 is not mixed with the viscous dust, the dust collecting performance can be maintained even when the dust collecting body is electrostatically collected by the semi-automatic gas processing system.

Flue gas discharged from the spinner 3 and the forming conveyor 4 enters the wet electrostatic precipitator 8 through a penthouse 5 and a dust box 7 and is then treated through a chimney 9. The exhaust gas discharged to the atmosphere and discharged from the oven 10 and the cooler 11 enters the incinerator 12 and is incinerated, and dust is collected by a bag filter 13, except for the collected dust. The component is discharged to the atmosphere through the chimney 14.

The penthouse 5 is a facility for removing a glass wool of a large size introduced together with the gas discharged from the spinner 3 and the forming conveyor 4, which is discharged from the spinner 4 and the forming conveyor 4 Since gas containing glass wool flows in a state where the temperature is high and the adhesion is high, if it is left as it is, it may cause an obstacle to the suction fans 5d and 6 installed in the post-process. It is responsible for removing wool in advance. That is, the penthouse 5 is used to remove the glass wool contained in the gas discharged from the collecting device 30, which prevents the glass wool from being introduced in a later process to prevent problems. As an important function.

The structure of the penthouse 5 is composed of a chamber for lowering the flow rate of the gas introduced into the inlet 5a and a spray nozzle 5c for spraying water into the glass wool and gas to be introduced, When water is sprinkled on the material, the binder material and the glass wool are absorbed and aggregated so that they fall to the bottom of the penthouse 5 and are discharged through the outlet 5b.

As described above, the large-size glass wool is primarily removed from the penthouse 5, and glass wool is attached to the following blower 5d (see FIG. 2) together with the binder to prevent the blower 5d from being stopped . On the other hand, a lid is placed on the inlet of the induction blower 5d so that the gas does not flow directly into the inlet, and the gas flows in the opposite direction so that the large particles are not directly introduced into the fan of the induction blower 5d Thereby increasing the dust collection efficiency by the inertial force.

The water 5e including the glass wool discharged from the penthouse 5 is collected in the pit 50 and enters the vibrating screen or the vibrator screen filter 16 by the pump 51, and the vibrator screen filter. (16) pours a liquid containing glass wool solid on a metal filter and separates it into a solid and a liquid by vibrating method. The liquid 16e separated by the vibrator screen filter 16 enters the pit 50 again and the solids 16d filtered as solids, i.e. the glass wool, enter the foaming conveyor 4 again and are recycled. In FIG. 2, reference numeral 16a denotes an inlet of the vibrator screen filter 16.

The gas discharged by the suction fan 6 or the induction blower 5d from the penthouse 5 is transferred to a dust box 7. The dust box 7 is a facility for removing glass wool introduced into the gas discharged from the forming apparatus 30 together with the penthouse 5, and is smaller than the glass wool removed from the penthouse 5. Remove it. Spray nozzles 7c are provided inside the dust box 7 so that water is sprayed so that the glass wool particles coupled by water and having increased inertia force are discharged to the outside and transferred to the vibrator screen filter 17 , The gases that have passed through the dust box 7 enter the horizontal wet electrostatic precipitator 8 and the fine dust is removed.

The vibrator screen filter 17 has the same structure as the vibrator screen filter 16, and the liquid containing the solids discharged from the dust box 7 enters the vibrator screen filter 17 through the inlet 17a and the solids. After the liquid is separated, the liquid component is discharged through the liquid outlet 17b and then transferred to the wet electrostatic precipitator pit 60, and the solid 17d is discharged through the solid outlet 17c and then to the forming conveyor 4. It is transported and recycled again.

The vibrator screen filters 16 and 17 preferably use a fine mesh filter as a separation means, whereby even when a small amount of oil and viscous deposits are mixed in the raw liquid to be treated, It is possible to efficiently capture fine solids and reduce the load on the rear end. In the practical embodiment to which the present invention is applied, the vibrator screen filters 16 and 17 have a problem of clogging in the filter because the driving force cleaning device at the top of the vibrator removes and removes the oil film or deposits on the filter surface by pressure. There is no advantage to worry about this happening. It is desirable that the cleaning device at the upper end of the vibrator screen filters 16 and 17 be adapted to the quality of various liquids and to be set to enable automatic operation or unattended operation. Meanwhile, the vibrator screen filters 16 and 17 can be applied to devices of various shapes and structures according to the environment, installation place, purpose, and the like.

The gas discharged from the outlet 7b of the dust box 7 can now be seen that the glass wool has been sufficiently removed, but contaminants of phenols due to the binder material introduced from the forming apparatus 30 are still present. When the gas from (7) is discharged into the chimney, a blueish 'clean' (靑 煙) comes out. 'Clean' is a type of material that is produced by the binder material used in the glass wool manufacturing process and decomposed and volatilized at a high temperature to be discharged in a particle size of 0.01 μm to a few μm. Is attached. The present invention is characterized in that a horizontal wet electrostatic precipitator (8) is installed in order to remove these fine clean particles still remaining through the penthouse (5) and the dust box (7).

Referring to FIG. 2, the horizontal wet electrostatic precipitator 8 of the present invention is installed with a plurality of dust collecting chambers 80 spaced apart from each other in a horizontal direction in a dust collector structure 801 (see FIG. 4) constructed in a horizontal direction. It is. The horizontal wet electrostatic precipitator 8 charges the discharge gas introduced from the dust box 7 to charge the dust particles to negative (−) and then to the dust collecting plate 200 (see FIG. 7) charged to the positive electrode. The dust particles are removed in such a manner that dust particles are attached, and water is always sprayed on the dust collecting plates 200 in the dust collecting chamber 80 by using the washing water supply device 83 to wash and remove the dust attached to the dust collecting plates.

The dust washed down with the water in the dust collecting chamber 80 of the horizontal wet electrostatic precipitator 8 is collected in the waste water collecting tank 8c and transferred to the wet electrostatic precipitator pit 60, and the waste water contained in the pit 60 is collected. Is separated into a solid and a liquid (water) by the filter press 65 and then recycled as washing water (process water).

In FIG. 2, reference numeral 8a denotes an inlet of the horizontal wet electrostatic precipitator 8, 8b denotes an outlet thereof, and 81 denotes an insulator box 81 installed above each dust collecting chamber 80. ), The upper end of the discharge electrode 300 (see Fig. 7) is fixedly supported by an insulator (insulator).

2, reference numerals 61a and 61b denote pumps provided between the wet electrostatic precipitator pits 60 and the filter presses 65, and reference numerals 62a and 62b denote recycled water numbers of the wet electrostatic precipitator pits 60 And is supplied to the inside of the wet electrostatic precipitator 8 again.

FIG. 3 is an enlarged configuration diagram of a portion A shown in FIG. 2, showing the configuration of the horizontal wet electrostatic precipitator 8 in more detail.

Referring to FIG. 3, the gas discharged from the dust box 7 enters the inlet 8a of the wet electrostatic precipitator 8, is collected through a plurality of dust collecting chambers 80, and then the outlet 8b on the opposite side thereof. Through the chimney (9). The dust collecting chambers 80 are composed of a plurality of dust collecting plates 200 arranged vertically and vertically, as described below, and a plurality of discharge electrodes 300 installed vertically between the dust collecting plates 200. (See FIG. 7), these dust collection chambers 80 are spaced apart from each other by a predetermined interval in the horizontal direction, so that an empty space 800 exists between the dust collection chambers 80. In the horizontal wet electrostatic precipitator 8 of the present invention, since the working platforms are installed in multiple stages in the empty space 800 as described below, when a person enters the inside of the dust collector structure, the dust collecting plates 200 are formed using the working platforms. ), You can clean the dust collector yourself.

The dust collecting plate 200 (refer to FIG. 7) and the discharge electrode 300 (refer to FIG. 7) of the dust collecting chamber 80 are connected to the high voltage unit 82 to receive a high voltage of 45,000 to 60,000 V, whereby between the dust collecting plate and the discharge electrode. Corona discharge occurs.

In general, in the case of a gas, unlike metal conductors, the number of freely movable electrons is very small, so that an electric state is usually maintained in an insulated state. However, when a high voltage is applied to the dust collector and discharge electrode of the electrostatic precipitator, ionization occurs due to a very large potential difference between the two poles, and free electrons are generated and fine electricity flows. This phenomenon is called corona discharge. The ions generated by the ionization phenomenon are charged and collected by dust and mist fumes.

On the other hand, the washing water supply pipe 83 is installed in the upper, the inside and the periphery of the dust collecting chamber 80, the plurality of spray nozzles (83b) are installed in the washing water supply pipe 83, the spray nozzles (83b) Water sprayed by) removes the dust attached to the dust collecting plate 200 by washing. A perforated plate 85 is installed between the gas inlet 8a and the first dust collecting chamber 80 to constantly adjust the distribution of the gas drawn to the electrostatic precipitator, and to remove large particles in the inflowed gas primarily. In addition, the perforated plate 85 has a plurality of small holes are drilled in the steel plate, it is possible to filter out relatively large particles primarily. A water supply pipe 84 is installed around the perforated plate 85, and a plurality of spray nozzles 84b are installed at the water supply pipe 84, and water sprayed from the spray nozzles 84b is provided on the perforated plate ( By washing 85, particles adhered to the perforated plate 85 are removed.

The water that flows down with the dust in the perforated plate 85 and the dust collecting chamber 80 is collected into a wastewater collecting tank 8c installed at the lower part of each dust collecting chamber 80, and the wastewater 8d of the wastewater collecting tank 8c is wet. It is transferred to the electrostatic precipitator pit 60 for recycling.

On the other hand, an insulator box 81 is provided at an upper portion of the dust collecting chamber 80 of the wet electrostatic precipitator 8, and an upper end portion of the discharge electrodes 300 (see FIGS. 7 and 9) is provided in the insulator box 81. It is fixed on the first upper frame 210 of the structure 801 by an insulator that is an insulator. In order to keep the inside of the insulator box 81 in an insulated state and to prevent the insulator from being damaged by the dust of the gas, hot air is injected into the inside of the insulator box 81 as purge air. The air purge unit 810, which supplies purge air to the insulator box 81, includes an air purge fan 812 and an air purge heater 811, and the damper 86 supplies air. The flow rate of the clean air supplied through the pipe 813 to the insulator box 81 is adjusted.

In the present invention, the horizontal wet electrostatic precipitator 8 has both the gas inlet 8a-1 and the gas outlet 8b-1 in a gradual diffusion shape, so that the pressure loss of the gas can be minimized. have.

In FIG. 3, reference numeral 9c denotes a lightning rod provided at the upper end of the chimney 9, and 9a denotes a copper plate as a ground electrode embedded under the ground GR. Reference numeral 8e indicates a support of the dust collector structure, and 8f indicates a copper plate as a ground electrode connected to the support 8e and embedded in the ground.

4 is a front view of the horizontal type wet electrostatic precipitator 8 for exhaust gas treatment of the glass wool production plant according to the present invention as viewed from the outside. Referring to FIG. 4, access spaces 801a, 801b, 801c, and 801d divided into a plurality of floors are installed outside the dust collector structure 801, and are provided in the access spaces 801a, 801b, 801c, and 801d. Workers can enter and exit the inside of the dust collector structure 801 through the provided entrances 802. Opening the doorway 802 is directly connected to the work platform (work path 400 of FIG. 7) installed in the empty spaces 800 inside the dust collector structure 801, so that the workers walk around the work platform and collect the dust collecting plates. Dust residues attached to the 200 can be cleaned.

In FIG. 4, the total height of the dust collector structure 801 is divided into four floors based on a height of 2.5-3 m, which is a range in which manual work is possible, and the first floor access space 801a, the second floor access space 801b, and the third floor access space from below. Although 801c and the 4th floor entrance space 801d are provided, the number and height of floors can be changed as many as possible according to a specific case.

The control chamber 110 is provided at one side of the wet electrostatic precipitator, and the control chamber 110 can control and control the operation of each part of the wet electrostatic precipitator as appropriate.

In FIG. 4, reference numeral 803 denotes a staircase, 804 denotes a railing installed on the roof of the dust collector structure 801, and 805 denotes a scaffold of each floor access space 801a, 801b, 801c, and 801d.

5 is a plan view of a horizontal wet electrostatic precipitator 8 for exhaust gas treatment of a glass wool production plant according to the present invention, and FIG. 6 is a horizontal wet electrostatic precipitator 8 according to the present invention at a gas inlet 8a side. This is a side view.

5 and 6, a plurality of insulator boxes are installed on the upper rooftop 806 of the wet electrostatic precipitator to correspond to the position of the dust collecting chamber 80 (see FIG. 3), and on one side of the high voltage unit 82. A part of the transformer 82a is installed, and an air purge unit 810 is installed on the opposite side thereof to prevent insulators from contamination due to mist and dust, thereby preventing insulators from breaking. And it is shown that the filter press 65 is installed on one side of the wet electrostatic precipitator (8).

7 and 8 are perspective views schematically showing the configuration of the dust collecting chamber 80 inside the horizontal wet electrostatic precipitator 8 according to the present invention.

The dust collecting chamber 80 is a facility in which dust in the gas is attached to the dust collecting plate 200 by corona discharge while the gas introduced from the dust box 7 passes, and is discharged from the discharge electrode 300 by the high voltage unit 82. When a high voltage is applied to the dust collecting plate 200, the negative ions emitted from the discharge electrode 300 are coupled to the dust particles in the gas, thereby charging the dust particles having the properties of the positive electrode as a whole to the negative electrode. . Thus, dust particles in the gas are removed by attaching the dust particles charged with the (-) pole to the dust collecting plates 200 charged with the (+) pole. Arrows in Fig. 7 indicate the passage direction of the gas.

Referring to FIG. 7, the plurality of dust collecting plates 200 (preferably about 40 to about 60) are installed in a parallel state spaced apart from each other at regular intervals in a state in which all of the dust collecting plates 200 are vertically placed. The separation distance between the gaps) is about 30 to 40 cm, preferably 30 cm. In addition, a plurality of discharge electrodes 300 are vertically installed between the dust collecting plates 200, and the discharge electrodes 300 are preferably manufactured in a hollow pipe shape, and are disposed on both sides of the discharge electrodes 300. The discharge needles 300b protrude a large number and have a fish bone type shape.

In FIG. 7, the discharge electrode 300 is connected to the discharge electrode upper connecting member 301 by a bracket 302, and the discharge electrode upper connecting member 301 is insulated insulator in the insulating space 81a in the insulator box 81. 306 is supported by the first upper frame 210 (see FIG. 9). Alternatively, the insulator insulator 300 extends directly to the insulating space 81a without passing through the upper electrode connecting member 301. It is also possible to be fixed to the first upper frame 210 by the (306).

First, as illustrated in FIG. 7, the coupling relationship between the discharge electrode 300 and the discharge electrode upper connection member 301 will be described. An upper end portion of the discharge electrode 300 may be attached to the bracket 302 installed at the lower end of the discharge electrode upper connection member 301. Combined. At this time, the bolt 303 is inserted into the fastening hole 302a of the bracket 302, and the bolt 303 passes through the through hole 300a provided at the upper end of the discharge electrode 300 and then fixed by the nut 303a. do.

On the other hand, the working path 400, that is, the working platform is installed in multiple stages on both sides of the dust collecting plate 200, the worker can approach the dust collecting plate 200 by using the working passage 400. Since the dust collecting plate 200 and the discharge electrode 300 are always in contact with water, the dust collecting plate 200 and the discharge electrode 300 are preferably made of stainless steel, which does not rust. Particularly, the dust collecting plate is made of SUS304, which is made of No. 2B polished finish, and has a thickness of 2 mm (2t). It is preferable to manufacture in a plate shape, and it is preferable to manufacture the discharge electrode 300 in the form of a pipe of SUS304 material, thickness 0.8mm, and diameter 16mm.

As shown in FIG. 8, the dust collecting plates 200 have upper edge portions thereof fixed to the second upper frame 220 by bolts 212. 801 is fixed within (not shown). That is, the second upper frame 220 is provided with a dust collecting plate fixing bracket 211 at regular intervals, the upper both sides of the dust collecting plate 200 is firmly supported by the dust collecting plate fixing brackets 211, Even if the dust collecting plate 200, which is a very thin plate having a thickness of about 2 mm, is standing vertically with a length of several m, it may not be bent or bent at all. Even if there is a possibility of deformation of the gap between the dust collecting plate and the dust collecting plate, it is supported by the space retaining rod between the dust collecting plate and the dust collecting plate installed in the middle, thus preventing the occurrence of deformation.

As described above, the present invention supports the upper part of the dust collecting plate 200 by pulling the upper part of the dust collecting plate 200 from both sides by fixing the upper edges of both sides of the dust collecting plate to the bracket in the second upper frame 220 in the installation method of the dust collecting plate 200. The dust collecting plate 200 may be made of a thick material for the purpose of securing strength for maintaining the shape and posture of the dust collecting plate 200. In particular, a portion of the dust collecting plate 200 may be bent to reinforce the strength of the dust collecting plate 200. There is no need to take any action, such as letting or forming wrinkles.

The conventional vertical wet electrostatic precipitator had to use a long dust collecting plate of about 4 to 6m only from the upper side, so that the steel plate of the dust collecting plate was not bent or bent in a round or honeycomb manner in order to prevent bending or bending. I had to use it, and I also needed to bend some of the surface of the collecting plate to reinforce it. When the dust collecting plate is bent or bent in this way, when dust is accumulated on the bent portions, there is a disadvantage in that a dead space does not fall well due to a dead space that cannot remove the attachment even when spraying washing water.

Since the problem of the conventional vertical wet electrostatic precipitator is well recognized, the present inventors designed the shape of the dust collecting plate 200 in a completely planar type in the invention of the horizontal wet electrostatic precipitator 8. That is, the dust collecting plate 200 used in the present invention has a larger bearing capacity than the conventional wet electrostatic precipitators despite having a thickness of only about 2 mm, and the upper upper sides of the second upper frame 220 by the bracket 211. ) To support the pull-out method from both sides, so even if the dust collecting plate 200 has a thin thickness, there is no fear of bending at all. As such, the dust collecting plate 200 of the present invention is a completely flat type having no folded or bent portions, so that no dead space cannot be removed by the washing water sprayed from the washing water supplying means 83 so that no dead space is generated. The whole is washed, and in particular, even when the cleaning worker performs cleaning to remove the dust debris attached to the dust collecting plate 200, there is an advantage that the dust debris can be removed from the dust collecting plate 200 relatively easily.

7 and 8, the washing water supply pipe 83 is installed at the upper end of the gas inflow direction side of the dust collecting plates 200, and the washing water is sprayed from the spray nozzles 83b installed in the washing water supply pipe 83. And the dust attached to the dust collecting plate 200 is removed by washing.

Referring to FIG. 8, the washing water supply pipe 83 installed at one side of the dust collecting plates 200 is provided with a spray nozzle 83b between each dust collecting plate 200 and the dust collecting plate 200, and one spray nozzle 83b. ) Has a very wide range of spraying range of about 60 ~ 120 ° in the inclined downward, it is possible to spray the washing water to the entire area of the dust collecting plate 200 installed below the spray nozzle (83b). That is, one spray nozzle 83b can wet the entire area of the dust collecting plates 200 on both sides thereof. In FIG. 8, reference numeral 83c shows a water spray range of the spray nozzle 83b.

FIG. 9 is a schematic front view showing the supporting structure of the discharge electrode 300 and the spraying range of the washing water in the horizontal wet electrostatic precipitator 8 of the present invention, and FIG. 10 shows the state of FIG.

Referring to FIG. 9, the discharge electrode upper connecting member 301 connected to the upper end of the discharge electrode 300 is supported by the insulator insulator 306 installed on the first upper frame 210 in the insulating space 81a, and supplies washing water. The washing water widely sprayed laterally by the spray nozzles 83b of the pipe 83 flows down while forming the washing water film layer 83d on the dust collecting plate 200. As described above, the dust collecting plate 200 is always formed with a water film during operation of the dust collector, whereby the dust is washed and removed.

In FIG. 9, reference numeral 305 denotes an upper fixing frame to which the discharge electrode upper connection member 301 is coupled, and 307 denotes a nut for fastening the discharge electrode upper connection member 301 onto the upper fixing frame 305.

As shown in FIG. 10, one spray nozzle 83b of the washing water supply pipe 83 wets the entire surface of the dust collecting plates 200 located on both left and right sides thereof, and washes the washing water film layer 83d on the dust collecting plate 200. Form it.

11 is a view illustrating a path through which the washing water used in the exhaust gas treatment line of the glass wool production plant to which the present invention is applied is recycled and circulated. As shown in FIG. 2, water is also supplied to the penthouse 5, but for convenience of description, in FIG. 11 and FIG. 12, only water for the apparatuses after the dust box 7 is centered around the wet electrostatic precipitator 8. Or that the wash water is supplied and circulated.

The water used in the wet electrostatic precipitator 8 is sent as wastewater to the wet electrostatic precipitator pit 60 which is separated into solid sludge and liquid (water) in the filter press 65 and then the water is again returned to the wet electrostatic precipitator And returns to the pit 60. The regenerated water is supplied to the dust box 7 and the wet electrostatic precipitator 8 by using the pump 62 and reused. By the way, there is water that is included in the solid content of the filter press 65 and the water exiting the atmosphere through the chimney (9), so that the shortage should always be supplemented with fresh water.

Figure 12 shows the flow rate and balance relationship of water (washing water) in the case of the actual glass wool production plant to which the present invention is applied. 12 shows a dust box 7, a wet electrostatic precipitator 8, a pit 60, and a filter press 65 for applying a vertical wet electrostatic precipitator according to the present invention as an environmental treatment facility of a glass wool production plant as a practical example. Water balance, which shows the flow rate of the water circulated between the water and the amount of fresh water to be replenished, according to the wet electrostatic precipitator (8). Supplemented with 5.4 m 3 per hour, the water recycling rate was found to be quite good.

13 and 14 are dust cleaners attached to the dust collecting plates 200 by the cleaning worker P on the work path 400 in the horizontal wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention. A scene of cleaning 230 and 231 is shown.

The biggest feature of the present invention is that the wet electrostatic precipitator is designed in a horizontal manner, and the dust collecting chambers 80 inside the dust collector are divided into several and installed in a state spaced apart from each other in the horizontal direction. Thus, by installing the wet electrostatic precipitator 8 horizontally, sufficient empty space 800 (refer FIG. 3) can be provided between the dust collecting chamber 80 and the dust collecting chamber 80, and this empty space 800 will be provided. Through this, the worker can go inside to clean the dust collecting plate or facilitate maintenance / maintenance work.

That is, as shown in Figure 13 and 14, the present invention, the cleaning worker (P) can be raised above the work passage 400 to approach the dust collecting plate 200, as a result of the high pressure steam or high pressure washing nozzle (260) ) To clean the dust collecting plate 200 or to remove the highly viscous debris attached to the dust collecting plate 200 by hand using various tools such as a spatula. In FIG. 14, reference numeral 230 denotes dust debris attached to the surface of the dust collecting plate 200, and 231 denotes the dust collecting plate by the operator P shooting the steam jet 261 of the high pressure steam hose 260 to the dust residue 230. Debris deposits off 200 are shown.

As described above, the present invention enables the wet electrostatic precipitator to be horizontally designed so that an operator can directly enter and clean the inside of the precipitator, and as a result, it is possible to effectively remove the sticky dust debris deposited on the dust collecting plate 200, thereby collecting the precipitator of the wet precipitator. The advantage is that the efficiency can always be kept in good condition. In particular, the glass wool production plant has a characteristic that adhesive dust is inevitably generated due to the binder component introduced during the collecting process, so that the horizontal wet electrostatic precipitator of the present invention must be installed to improve the dust collecting efficiency of the wet electrostatic precipitator. Can be maintained. Therefore, the horizontal wet electrostatic precipitator of the present invention may be referred to as a specialized environmental pollution prevention facility for the exhaust gas treatment of a glass wool production plant.

15 to 17 are front, plan and side views of a horizontal type wet electrostatic precipitator 8 for exhaust gas treatment of a glass wool production plant according to a second embodiment of the present invention, and gas inlets 851a-1 and 852a. -1) shows a case in which two parts are installed.

The horizontal wet electrostatic precipitator 8 of the second embodiment shown in Figs. 15 to 17 differs only in that the gas inlets are branched into two in comparison with the first embodiment of Figs. That is, the gas discharged from the dust box 7 enters the first dust collecting unit 851 and the second dust collecting unit 852 through the first inlet 851a and the second inlet 852a, respectively. The first dust collector unit 851 and the second dust collector unit 852 are substantially connected inside the dust collector. Each of the inlets 851a-1 and 852a-1 of the first and second inlets 851a and 852a is manufactured in a diffusion type in which a cross section is gradually enlarged to minimize pressure loss of the gas.

18 shows an exhaust gas treatment line of another type of glass wool production plant to which the horizontal wet electrostatic precipitator 8 of the present invention is applied. 1 and 2, the exhaust gas from the spinner 3 and the forming conveyor 4 is discharged from the penthouse 5 and the dust box 7 with respect to the installation position of the horizontal wet electrostatic precipitator 8 of the present invention. Although described as coming into the horizontal wet electrostatic precipitator (8), the installation position and line arrangement relationship of the horizontal wet electrostatic precipitator (8) of the present invention is as shown in Figures 1 and 2 according to the circumstances of each factory It is possible to configure differently.

That is, as shown as an example of FIG. 18, the exhaust gas discharged from the spinner 3 and the forming conveyor 4 is passed to the horizontal wet electrostatic precipitator 8 via the penthouse 5 and the dust box 7. At the same time, the exhaust gas discharged from the oven 10 and the cooler 11 may be first treated in an acidic scrubber 18, and then may be taken into a horizontal wet electrostatic precipitator 8 and treated together. And unlike the configuration shown in Figure 18 it is also possible to set the installation position of the wet electrostatic precipitator.

As described above, the horizontal type wet electrostatic precipitator for the exhaust gas treatment of the glass wool production plant according to the present invention effectively purifies the flue gas generated from the resin of the adhesive component among the substances discharged from the glass wool manufacturing process. In particular, the system has a system that prevents adhesive dusts from adhering to the dust collecting plate by designing the entire dust collector equipment horizontally, and the system is designed to easily remove adhesive contaminants at any time. have.

Horizontal wet electrostatic precipitator of the present invention by installing a work platform of about 1 to 2 m between each dust collection chamber 80 inside the dust collector (8) to secure a sufficient working space for the worker to enter and perform cleaning work In particular, by installing the work platform in multiple tiers, the worker can access and clean all areas of the dust collecting plate 200, and there is an advantage of maximizing the cleaning work efficiency. In other words, by installing the work platform (work passage) in the width of 1 ~ 2m, the worker can access the dust collector plate through the work passage and remove the debris adhered to the dust collector plate safely without obstacles caused by the interference of the structure by high pressure jet steam or by hand. In addition, the shape of the dust collecting plate itself is completely flat, so there are no folded parts or protruding parts by welding, thereby suppressing the seizure of dust during dust collection, and a dead space in which an operator cannot remove the attachment manually. Was not generated.

In addition, the present invention provides a fish bone type discharge electrode in which discharge needles protrude in both sides of the pipe shape in the shape of the discharge electrode, thereby maximizing dust collection efficiency through optimization of the discharge space.

1: Glass melting furnace 1a: Chimney
1b: Molten glass 2: Semi-dry gas treatment plant
3: spinner 3a: nozzle
3b: binder 3c: glass fiber
4: forming conveyor 4a: driving roller
5: Penthouse 5 ': Drop-out box
5a: inlet 5b: outlet
5c: Spray nozzle 5d: Manned blower
5e: Solid (liquid) mixture 6: Suction fan
7: dust box 7a: entrance
7b: outlet 7c: spray nozzle
8: wet electrostatic precipitator 8a: inlet
8a-1: Inlet 8b: Outlet
8b-1: discharge part 8c: wastewater sump
8e: support 8f, 9a: copper plate
9, 14: chimney 9b: connecting piping
9c: lightning rod 10: oven
11: cooler 12: incinerator
13: Bag filter 15: Glass wool product
16, 17: Vibrator screen filter 16a, 17a: entrance
16b, 17b: liquid outlet port 16c, 17c: solid outlet port
16d, 17d: solid 18: acid scrubber
30: face plate 50: pit
51: Pump 60: Wet electrostatic precipitator (pit)
61a, 61b, 62, 62a, 62b: pump 65: filter press
80: dust collecting chamber 81: insulator box
82: high voltage unit 82a: transformer
83: washing water supply pipe 83a: washing water supply pipe
83b: spray nozzle 83c: wash water spray range
83d: wash water film layer 84: water supply pipe
84b: spray nozzle 85: perforated plate
86: damper 110: control room
200: dust collecting plate 210: first upper frame
211: Dust collecting plate fixing bracket 212: Bolt
220: second upper frame
230: deposit 231: remove deposit
260: high pressure steam hose 261: steam jet
300: discharge electrode 300a: through hole
300b: discharge needle 301: discharge electrode upper connection member
302: bracket 302a: fastening hole
303: bolt 303a: nut
305: upper fixing frame 306: insulator
307: nut 400: working passage
800: empty space 801: dust collector structure
801a: 1st floor access space 801b: 2nd floor access space
801c: 3rd floor access space 801d: 4th floor access space
802: doorway 803: stairs
804: handrail 805: scaffold
806: rooftop
810: air purge unit
811 air purge heater
812: air purge fan 813: air supply piping
851: first dust collecting unit 851a: first inlet
851a-1: First Inlet 852: Second Dust Collector
852a: second entrance 852a-1: second entrance
GR: Ground P: Cleaner

Claims (8)

A wet electrostatic precipitator for treating flue gas containing contaminants including dust, formarin and phenolic substances generated in a glass wool production plant, wherein the internal space is configured so that the exhaust gas flows in a horizontal direction. Structure 801;
A gas inlet 8a installed at one side of the dust collector structure 801 and into which the exhaust gas is introduced into the dust collector structure 801;
A plurality of dust collecting chambers 80 which are spaced apart from each other in the horizontal direction in the dust collector structure 801 so that the exhaust gas introduced through the gas inlet 8a may pass sequentially;
A gas outlet 8b installed at the other side of the dust collector structure 801, through which exhaust gas passing through the dust collecting chambers 80 is discharged to the chimney;
A perforated plate (85) installed on a cross section through which the exhaust gas introduced into the dust collector structure (801) through the gas inlet (8a) passes before entering the dust collecting chamber (80) and having a plurality of holes formed therein;
The second washing water is installed in a direction opposite to the gas inlet (8a) on the basis of the perforated plate 85, spraying the wash water to the exhaust gas in the reverse direction of the traveling direction by injecting the wash water to the perforated plate (85) Supply means;
An insulator box 81 formed on the dust collector structure 801; And
And an air purge unit 810 for forcing hot air into the insulator box 81.
Each of the dust collecting chambers 80 includes a plurality of dust collecting plates 200 disposed vertically and parallel to each other, and a plurality of discharge electrodes 300 installed vertically in a space between the dust collecting plates 200.
The dust collecting plates 200 and the discharge electrodes 300 of the dust collecting chambers 80 are connected by the high voltage unit 82 to generate corona discharges between each other, so that dust in the exhaust gas is attached to the dust collecting plates 200. ,
The first washing water supply means sprays the washing water to the dust collecting chamber 80 to remove contaminants attached to the dust collecting plates 200,
In the insulator box 81, an upper end of the discharge electrode 300 is supported on the first upper frame 210 of the dust collector structure 801 through the insulator 306, and each of the dust collecting plates 200 is provided. Has an overall flat shape without any bent portions,
The dust collecting plates 200 are supported by the second upper frames 220 horizontally installed in a direction perpendicular to the flow direction of the exhaust gas on the upper part of the dust collector structure 801, and the second upper frame 220 is installed. Is located below the first upper frame 210, the bracket for fixing the dust collecting plate at a predetermined interval protruding from the second upper frame 220, the upper edge portions of the upper surface of the dust collecting plate 200 is the dust collecting plate By fastening the bolts 212 to the fixing brackets 211, the dust collecting plates 200 are installed hanging on the second upper frame 220 in a flattened state.
At least one of the front and rear of each dust collecting chamber 80 is provided with work paths 400 which the worker P can walk, and divided the entire height of the dust collecting plate 200 into a plurality of sections. When the work paths 400 are installed in each of the sections, the worker P directly accesses or cleans all areas of the dust collecting plates 200 through the work path 400 or indirectly. A horizontal type wet electrostatic precipitator for exhaust gas treatment of a glass wool production plant, characterized by being cleaned by means. delete The method of claim 1,
The lower part of the dust collector structure 801 is provided with a plurality of waste water collection tanks (8c) for collecting the washing waste water flowing down after use in the dust collecting chambers 80, respectively,
Washing wastewater of the wastewater collection tank (8c) is transported to the wastewater pit (pit, 60) is stored and recycled, and then resupply to the first washing water supply means, for the exhaust gas treatment of the glass wool production plant Horizontal Wet Electrostatic Precipitator delete delete delete According to claim 1, wherein the first washing water supply means,
A washing water supply pipe (83) installed in a direction orthogonal to an arrangement direction of the dust collecting plates (200) at an upper side of the side toward the gas inlet (8a) based on the respective dust collecting chambers (80); And
It includes; a plurality of spray nozzles (83b) installed in the washing water supply pipe (83),
The spray nozzles 83b are sprayed with washing water on the dust collecting plates 200 to wash off the dusts attached to the dust collecting plates 200, and the horizontal wet type for the exhaust gas treatment of the glass wool production plant. Electrostatic precipitator. The glass of claim 1, wherein the discharge electrodes 300 include a plurality of discharge needles 300b protruding in both directions in a fish bone type along the length direction of the discharge electrodes. Horizontal wet electrostatic precipitator for flue gas treatment in wool production plants.

Images