KR101986813B1 - Electrical dust precipitator for removing impurities in the coke oven gas - Google Patents

Abstract

This disclosure does not flow due to impact due to a strong corona discharge, and thus the distance between the dust collecting portion and the discharging portion is maintained at all times, so that the dust collecting efficiency is preserved. In addition, it has an advantage that durability without disconnection due to deterioration or corrosion does not occur and the dust collecting action is not interrupted. Further, it is easy to arrange the space for increasing the dust collecting efficiency, does not need to consider the installation direction, has a merit that it is easy to change the structure and can be utilized for various purposes. Also, by providing a structure for smoothly flowing the coke oven gas, the electrostatic induction action for separating impurities is excellent, and the dust collecting efficiency is increased, thereby providing economical advantages.
The electrostatic precipitator for removing impurities of the coke oven gas according to the embodiment of the present disclosure includes an inlet and an outlet, and the coke oven gas (COG) supplied through the inlet flows through the inside of the housing and is discharged to the outside through the outlet A high voltage generator which is mounted on one side of the housing and generates a voltage required for a predetermined electric discharge driven by an external power source; a plurality of discharges electrically connected to the high voltage generator, A plurality of compartments, at least one side of which is open to allow a sequential flow of coke oven gas, are formed in a space adjacent to the discharge plates, and the coke oven gas A discharger for charging the impurities to the cathode, and a plurality of through holes, And a dust collector configured to form a dust collecting plate extending through the yarn, wherein the dust collecting plate forms an anode at the time of discharging the discharge plates and attaches impurities charged to the cathode to the dust collecting plate by discharging the discharge plate .

Description

TECHNICAL FIELD [0001] The present invention relates to an electrostatic precipitator for removing impurities from a coke oven gas,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric dust collecting apparatus for removing impurities from coke oven gas, and more particularly, to an electric dust collecting apparatus for removing impurities from coke oven gas generated during a process of producing coke by carbonizing coal in a coke oven, To an electric dust collector for removing impurities of coke oven gas.

Unless otherwise indicated herein, the contents set forth in this section are not prior art to the claims of this application and are not to be construed as prior art to be included in this section.

Generally, a coke oven gas is generated in a process of producing coke by a carburizing process using coal. The coke oven gas is recovered as a by-product and transported through the coke oven gas piping to be used as a heat source in the unit process of steelworks.

Since the coke oven gas contains a large amount of contaminants (hereinafter referred to as 'impurities') such as tar, water, naphthalene, hydrogen sulfide, ammonia and benzene (toluene, xylene) .

Here, a typical example of a device for removing impurities from a coke oven gas is that a charge generated by a corona discharge adheres to a particle, becomes a charged particle, and is attracted to an electrode of an opposite polarity by an electrostatic force It is an electrostatic precipitator using moving principle.

1 shows a general electrostatic precipitator. In Fig. 1, a coke oven gas containing impurities such as tar introduced into a dust collector through a coke oven gas pipe is filled with a hexagonal shape supported by a support table 1 installed in an electrostatic precipitator, (-) pole (2) is connected to the dust collecting plate (2) by a corona discharge while passing between a discharge wire (3) of a piano wire connected to a supporting stand (1) A high direct current voltage is applied.

Therefore, the impurities contained in the coke oven gas passing between the dust collecting plate 2 and the discharge wire 3 of the (-) polarity are attracted to the (-) pole and attached to the inner surface of the hexagonal dust collecting plate 2, The clean gas, which has collected the impurities, is sent to the post-process through the upper side piping.

FIG. 2 is a view showing an impurity adhered to the dust collecting plate shown in FIG. 1. As shown in FIG. 2, in the above-described electrostatic precipitator, impurities attached to the dust collecting plate 2 can not flow down, The accumulated distance between the discharge electrode 3 and the dust collecting plate 2 is narrowed so that the discharge wire 3 of the positive electrode and the collecting plate 2 of the negative electrode are adhered to each other (6) is generated between the impurities (5) charged by the (-) polarity. The spark generated at this time deteriorates the piano wire which is the discharge wire (3), and causes severe disconnection of the discharge wire (3), causing the dust collecting operation of the dust collecting plate (2) to be stopped.

In addition, since the discharge wire 3 is a piano wire, even if there is a weight 4 at the lower part thereof, the discharge wire 3 can flow due to impact due to a strong corona discharge or the like.

In addition, since the discharge wire 3 is connected to the weight 4 and disposed in the longitudinal direction in the dust collecting plate 2, the electrostatic dust precipitator must be installed in consideration of the direction of the discharge wire 3, It is difficult to use it for various purposes.

As shown in FIG. 3, the dust collecting plate 2, which is provided in a plurality of holes in the electrostatic precipitator, is a hexagonal rod shape, so that the discharge plate and the dust collecting plate shown in FIG. It is practically difficult to arrange the space inside the limited space of the electrostatic precipitator to increase the efficiency of the dust collection.

On the other hand, as prior arts, Korean Patent Registration No. 10-0797955 entitled " Device for removing tar of coke oven gas using electrostatic induction action "and Korean Patent Registration No. 10-1434949" An undifferentiated petroleum coke refined powder combustion system having a wet desulfurization and dust collecting unit integrally provided "and the like.

1. Korean Patent Registration No. 10-0797955 (2008.01.18) 2. Korean Patent Registration No. 10-1434949 (2014.08.21)

And an electric dust collector for removing impurities from the coke oven gas in which the dust collection efficiency is preserved by keeping the distance between the dust collecting part and the discharging part at all times without being influenced by the impact due to the strong corona discharge.

Further, it is intended to provide an electric dust collecting apparatus for removing impurities of coke oven gas which has durability free from deterioration or disconnection due to corrosion and does not cause interruption of dust collecting operation.

Another object of the present invention is to provide an electric dust collector for removing impurities of coke oven gas, which can easily be arranged in a space for increasing the dust collecting efficiency, does not need to consider the installation direction, and can be easily modified for various purposes.

It is another object of the present invention to provide an electrostatic precipitator for removing impurities of coke oven gas, which has an excellent electrostatic induction action for separating impurities by providing a structure for smoothly flowing a coke oven gas, thereby increasing the dust collecting efficiency.

According to an embodiment of the present invention, there is provided an electric dust collecting apparatus for removing impurities from a coke oven gas, comprising: a housing having an inlet and an outlet, the housing having a coke oven gas (COG) supplied through the inlet and flowing through the housing, A high voltage generator that is mounted on one side of the housing and generates a voltage required for predetermined electric discharge by being driven by an external power source and a plurality of discharge plates electrically connected to the high voltage generator, A plurality of compartments, at least one side of which is opened to allow a sequential flow of the coke oven gas, are formed in a space adjacent to the discharge plates, and impurities contained in the coke oven gas flowing in the compartment at the time of discharge of the discharge plates A discharger for charging the negative electrode to the negative electrode, and a plurality of through holes, Configuration but a dust collecting plate, which is installed extending over, and at the time of discharge of a discharge plate is formed in the dust-collecting plate for the positive electrode, a negative electrode made of an impurity-charged by the discharge of the discharge plate in a configuration that includes a dust collector attached to the dust collecting plate.

According to an embodiment, the high voltage generator comprises a corona discharge high voltage generator.

According to the embodiment, the discharge plate includes a first discharge plate row and a second discharge plate row opposed to the first discharge plate row.

According to the embodiment, the first discharge plate row and the second discharge plate row are arranged in parallel by a pair of supports so that the tip ends of the plates are partially overlapped adjacent to the longitudinal center line inside the discharger, As shown in Fig.

According to an embodiment, the compartment has a zigzag structure that allows the flow of coke oven gas within the discharge vessel.

According to the embodiment, in the interior of the compartment, the dust collecting plate is formed continuously or at least partly in an " e " shape.

The electric dust collector for removing impurities of the coke oven gas as described above does not flow due to impact due to a strong corona discharge, so that the distance between the dust collecting portion and the discharging portion is maintained at all times, so that the dust collecting efficiency is preserved.

In addition, it has an advantage that durability without disconnection due to deterioration or corrosion does not occur and the dust collecting action is not interrupted.

Further, it is easy to arrange the space for increasing the dust collecting efficiency, does not need to consider the installation direction, has a merit that it is easy to change the structure and can be utilized for various purposes.

Also, by providing a structure for smoothly flowing the coke oven gas, the electrostatic induction action for separating impurities is excellent, and the dust collecting efficiency is increased, thereby providing economical advantages.

1 is a view showing a discharge plate and a dust collecting plate of a conventional electrostatic precipitator.
2 is a view showing a state where impurities are fixed to the dust collecting plate shown in Fig.
3 is a view showing the arrangement structure of the discharge plate and the dust-collecting plate shown in Fig.
4 is a perspective view showing a part of the electric dust collector for removing impurities of the coke oven gas of the present disclosure;
5 is a cross-sectional view taken along the line X-X 'shown in FIG. 4;
FIG. 6 is a perspective view of the dust collector shown in FIG. 4; FIG.
7 is a cross-sectional view of the line Y-Y 'shown in FIG. 4;
8 is an enlarged view of part A shown in Fig.
9 is a cross-sectional view of the line Z-Z 'shown in FIG. 4;
10 is a perspective view of the discharge plate shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like numbers refer to like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

FIG. 4 is a perspective view of a portion of the electric dust collector for removing impurities of the coke oven gas of the present disclosure, and FIG. 5 is a cross-sectional view taken along the line X-X 'shown in FIG.

4 and 5, an electric dust collector 100 for removing impurities of coke oven gas according to an embodiment of the present disclosure is an electric dust collector for collecting impurities contained in coke oven gas using a corona discharge, A housing 10, a high voltage generator 20, a discharger 30, and a dust collector 40.

The housing 10 is made of a rectangular parallelepiped steel material having a space therein and has an inlet and an outlet. Coke gas (COG) supplied through the inlet flows through the inside and is discharged to the outside through an outlet. Further, the housing 10 is provided with an impurity outlet through which the impurities separated from the coke oven gas are discharged. Here, the inlet port and the outlet port are respectively formed on the left and right sides of the housing 10, and the impurity outlet port may be formed at various positions, but not limited to, the bottom of the housing 10. The inlet port, the outlet port, and the impurity outlet port are not illustrated in the present disclosure because they are easily understood by those skilled in the art to which the electrostatic precipitator belongs.

4 and 5, the high voltage generator 20 is mounted on one side of the housing 10 and is driven by an external power source to generate a voltage required for predetermined electric discharge. Here, the high voltage generator 20 of the present disclosure is composed of a corona discharge high voltage generator 20, but various devices for electrostatic dust collection can be used. The high-voltage generator 20 is insulated by an insulator, connected to a power cable, and connected to an insulation box 12 provided in the housing 10 with an insulator such as an insulator 12a. In this case, the insulation box 12 is formed of six pieces on one side in the width direction of the housing 10, and a total of twelve insulation boxes 12 are provided on both sides, but they may be installed more or less. The high-voltage generator 20, the insulation box 12, and the insulator 12a are technologies commonly used in the electric field, and thus are not described in detail.

FIG. 7 is a cross-sectional view taken along line Y-Y 'of FIG. 4, FIG. 8 is an enlarged view of portion A of FIG. 7, Fig.

4 to 5 and 7 to 10, the discharge unit 30 includes a plurality of discharge plates 30-1, 30-2 electrically connected to the high voltage generator 20, 30-2, 30-3, 30-4, 30-5, 30-6, ..., 30-20 in the space where the discharge plates 30-1 to 30-20 are adjacent, A plurality of compartments 36 having at least one side opened to allow a sequential flow of the discharge plates 30-1 to 30-20 are formed, The impurities are charged to the cathode. Here, the discharge plates 30-1 to 30-20 are formed in the shape of a single flat plate by a single unit body having a "C" -shaped cross section and spaced apart from each other at a predetermined interval on a support stand 38 36 are formed. As shown in FIG. 10, both end portions of the discharge plates 30-1 to 30-20 are spaced apart from each other by a predetermined distance in the longitudinal direction and protrude outward to be formed as a saw blade of a saw, The discharge plates 30-1 to 30-20 allow the impurities to be more efficiently charged. The discharge plates 30-1 to 30-20 are connected to the first discharge plate columns 32 (30-1, 30-3, 30-5, ..., 30-19) And second discharge plate columns 34 (30-2, 30-4, 30-6, ..., 30-20, hereinafter referred to as "34") opposed to the plate row 32. [ The first discharge plate row 32 and the second discharge plate row 34 are formed in parallel by a pair of supports 38 as shown in Figs. 8 and 9, and the discharge plates 30-1 to 30 -20) tip ends are fixed by a support 38 so as to maintain a crossover interval that is partially overlapped adjacent to the longitudinal center line inside the discharge device 30. At this time, the first discharge plate row 32 and the second discharge plate row 34 are arranged in each of the support rods 38 in approximately 20 configurations, but the present invention is not limited thereto. Only a part thereof is shown without all of the reference numerals. Here, the support base 38 is formed of a grid-like structure in which channels in the horizontal direction and the vertical direction are mutually connected so that the discharge unit 30 is electrically connected to the insulation box 12 installed on the left and right sides of the housing 10 And are disposed in a pair in the housing 10 so as to be mutually symmetrical in the width direction. The compartment 36 is constructed with a zigzag structure that allows the flow of coke oven gas within the discharge vessel 30, as shown in Figs. That is, the compartment 36 is partially overlapped with the longitudinal center line inside the discharger 30, and has a first discharge plate row 32 and a second discharge plate row 34, So that the coke oven gas supplied from the inlet port passes through the discharge device 30. The coke oven gas is supplied from the inlet port to the discharge port 30. [ This compartment 36 provides a change in the flow direction of the coke oven gas passing through the discharger 30 to increase the area of the corona discharge sufficient for the discharger 30 and the dust collecting reaction area to be described later in the dust collector 40, Thereby enabling dust collection processing. At this time, since the compartment 36 is formed by the space between the adjacent discharge plates 30-1 to 30-20, the discharge plates 30-1 to 30-20 are formed as a predetermined wall for the compartment 36 Lt; / RTI >

6 is a perspective view of the dust collector shown in Fig.

4 to 9, the dust collector 40 includes a plurality of through-holes 44 through which coke oven gas flows smoothly along the compartment 36, The dust collecting plate 42 forms an anode at the time of discharging the discharge plates 30-1 to 30-20 and is discharged to the cathode by the discharge of the discharge plates 30-1 to 30-20 And the charged impurities are attached to the dust collecting plate 42. Such a dust collector 40 is continuously or at least partly "b" shaped in the interior of the compartment 36, as shown in FIGS. 8 and 9. The dust collecting plate 42 includes a body 42a disposed between the first discharge plate row 32 and the second discharge plate row 34 and a first discharge plate row 32 bent from the body 42a, And a side plate 42b spaced apart from the front end of the second discharge plate row 34 by a predetermined distance. The dust collecting plate 42 is detachably attached by at least one auxiliary support 46. To this end, the upper or lower side of the side plate 42b or one side thereof is detachably fixed on the auxiliary support 46 . At this time, the side plate 42b and the auxiliary support 46 may be attached by a bolting method in which they are fixed by bolts so as to facilitate trouble or maintenance and replacement work. The above-described dust collector 40 is disposed between the first discharge plate row 32 and the second discharge plate column 34 which are arranged in parallel by the pair of supports 38 so that the dust collector 40 and the discharger 30 are disposed, Is more concentrated in a limited area, thereby increasing the efficiency of corona discharge and dust collection. At this time, the flow of the coke oven gas flowing through the inside by the space between the through holes 44, the compartment 36, and the discharge plates 30-1 to 30-20 of the dust collector 40 is smoothly performed.

The electric dust collector 100 for removing impurities of the coke oven gas as described above does not flow due to an impact due to a strong corona discharge and the distance between the dust collecting portion and the discharging portion is always maintained thereby to maintain the dust collecting efficiency, It is possible to easily arrange the space for increasing the dust collecting efficiency, do not need to consider the installation direction, and can easily utilize the structure for various purposes . Also, by providing a structure for smoothly flowing the coke oven gas, the electrostatic induction action for separating impurities is excellent, and the dust collecting efficiency is increased, thereby providing economical advantages.

It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It is not limited to the embodiment.

1: Support 2: Collector
3: discharge wire 4: weight weight
5: impurity 6: short
100: Electrostatic precipitator for COG transfer piping 10: Housing
12: Insulation box 12a: Insulator
20: high voltage generator 30:
30-1, 30-2, 30-3, ... , 30-20: discharge plate
32 (30-1, 30-3, 30-5, ..., 30-19): first discharge plate column
34 (30-2, 30-4, 30-6, ..., 30-20): the second discharge plate column
36: compartment 38: support
40: dust collector 42: dust collecting plate
42a: body 42b: side plate
44: through hole 46: auxiliary support

Claims (7)

A housing having an inlet and an outlet, wherein the coke oven gas (COG) supplied through the inlet flows through the inside of the housing and is discharged to the outside through the outlet;
A high voltage generator mounted on one side of the housing and driven by an external power source to generate a voltage required for predetermined electric discharge;
And a plurality of discharge plates electrically connected to the high voltage generator and installed at predetermined intervals in the housing, wherein at least one of the discharge plates is opened to allow the sequential flow of the coke oven gas, A discharger for forming a plurality of compartments and charging the impurities contained in the coke oven gas flowing through the compartment at the time of discharge of the discharge plates to the cathode; And
And a dust collecting plate having a plurality of through holes and extending through the compartments, wherein the dust collecting plate forms an anode when the discharge plates are discharged, and the impurities charged to the cathode by the discharge of the discharge plate And a dust collector attached to the dust collecting plate,
Wherein the discharge plate includes a first discharge plate row and a second discharge plate row opposed to the first discharge plate row,
Wherein the first discharge plate row and the second discharge plate row are arranged in parallel by a pair of supports so that plate end portions are partially overlapped adjacent to the longitudinal center line inside the discharge vessel to maintain a crossover interval And,
Said compartment comprising a zig-zag structure allowing flow of coke oven gas within said discharge,
Wherein said dust collecting plate is formed continuously or at least partly in an "" -shaped form within said compartment.
The method according to claim 1,
Wherein the high-voltage generator includes a corona discharge high-voltage generator for removing impurities from the coke oven gas.
delete delete delete delete The method according to claim 1,
Wherein the dust collecting plate is detachably attached by at least one auxiliary support.

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