KR101801949B1 - Recirculating systems for water film formation of the electrostatic precipitator - Google Patents

Recirculating systems for water film formation of the electrostatic precipitator Download PDF

Info

Publication number
KR101801949B1
KR101801949B1 KR1020160010817A KR20160010817A KR101801949B1 KR 101801949 B1 KR101801949 B1 KR 101801949B1 KR 1020160010817 A KR1020160010817 A KR 1020160010817A KR 20160010817 A KR20160010817 A KR 20160010817A KR 101801949 B1 KR101801949 B1 KR 101801949B1
Authority
KR
South Korea
Prior art keywords
solid
liquid
dust collecting
collecting plate
electrostatic precipitator
Prior art date
Application number
KR1020160010817A
Other languages
Korean (ko)
Other versions
KR20170090223A (en
Inventor
홍정희
신상원
Original Assignee
케이씨코트렐 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 케이씨코트렐 주식회사 filed Critical 케이씨코트렐 주식회사
Priority to KR1020160010817A priority Critical patent/KR101801949B1/en
Publication of KR20170090223A publication Critical patent/KR20170090223A/en
Application granted granted Critical
Publication of KR101801949B1 publication Critical patent/KR101801949B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/16—Plant or installations having external electricity supply wet type
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities

Abstract

In the present invention, after a solid such as fine particles contained in washing water discharged after being used in an electrostatic precipitator is separated from a liquid, the separated solid is treated with a waste sludge, fine particles are removed, To the recirculating system of the washing water for forming a water film of the electrostatic precipitator to be recirculated to the washing water.
According to an aspect of the present invention, there is provided a cleaning water recirculation system including: an electrostatic precipitator for removing foreign matter including fine particles contained in a washing gas using washing water; A discharge pipe for discharging the solid-containing cleaning water recovered from the electrostatic precipitator to the solid-liquid treatment device; A solid-liquid treatment device for separating solid and liquid from the solid-containing cleaning water discharged through the discharge pipe; A solid-liquid separator for finally separating the liquid contained in the solid discharged through the liquid-liquid treatment device; And a supply pump for re-supplying the solid-removed liquid to the electrostatic precipitator through the solid-liquid treatment device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recirculating system for a water film forming electrostatic precipitator,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recirculating system for washing water for forming a water film in an electrostatic precipitator, and more particularly, to a system for separating a solid such as fine particles contained in washing water discharged after being used in the electrostatic precipitator from a liquid, The solid is treated with a waste sludge, the fine particles and the like are removed, and the treated liquid is recirculated back to the washing water.

At present, awareness of harmfulness of fine dusts has been raised, and interest in techniques for removing fine dusts from various plants is increasing.

Fine dusts are very harmful because they contain various kinds of heavy metals, polyunsaturated aromatic hydrocarbons (PAHs), and mercury, besides they cause health problems because of their small size. It is associated with sulfur oxides to generate fog, which causes visibility disorder, and causes various biological and environmental problems. In order to remove such fine dust, a dry or wet electrostatic precipitator is employed at the rear end of the exhaust gas treatment device discharged from various plants.

In general, a wet electrostatic precipitator is effective for removing fine dust. In the case of a dry electrostatic precipitator, there is a fear that the dust collected when a mechanical impact is applied to the dust collecting plate of the electrostatic precipitator, The wet dust collector is relatively clean due to the fact that the collected dust is cleaned with water. Therefore, the wet electrostatic precipitator has been actively developed for removing fine dust.

However, the wet electrostatic precipitator is disadvantageous in that a waste water containing fine particles is generated, and a separate facility for treating wastewater is required.

KR 10-0467722 B1 2005. 01. 13.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a wet electrostatic precipitator in which a solid such as fine particles contained in washing water discharged after being used in a wet electrostatic precipitator is separated from a liquid, So that the fine particles and the like are removed and the treated liquid is recycled to the washing water. In the state where the liquid is firstly filtered through the first solid-liquid treatment device, the solid is finally separated from the liquid through the solid- Liquid separation is optimized and the load in the solid-liquid separator is minimized. 2. Description of the Related Art

According to an aspect of the present invention, there is provided a cleaning water recirculation system including: an electrostatic precipitator for removing foreign matter including fine particles contained in a washing gas using washing water; A discharge pipe for discharging the solid-containing cleaning water recovered from the electrostatic precipitator to the solid-liquid treatment device; A solid-liquid treatment device for separating solid and liquid from the solid-containing cleaning water discharged through the discharge pipe; A solid-liquid separator for finally separating the liquid contained in the solid discharged through the liquid-liquid treatment device; And a supply pump for re-supplying the solid-removed liquid to the electrostatic precipitator through the solid-liquid treatment device.

According to the present invention, the above-described solid-liquid treatment apparatus further comprises a solid-liquid concentration tank for separating solid from the solid-containing cleaning water supplied through the discharge pipe, and a solid- And an overflow separator separating the solid-liquid concentrate tank and the recycle tank from each other. The upper liquid tank is further provided with an upper vane for preventing the solid-state overflow A lower sedimentation tank is further provided in the lower part of the solid-liquid concentration tank so that solid precipitation can be stably performed, and an inclined pipe is further provided in the lower part of the discharge pipe, and an end outlet of the inclined pipe is disposed close to one side of the lower sedimentation tank So as to be positioned.

According to the present invention, since the fine particles and the like are removed and the treated liquid is recycled to the washing water, the solid is finally separated from the liquid through the solid-liquid separator in a state where the liquid is firstly filtered through the first solid- The solid-liquid separation is advantageous in that the load in the solid-liquid separator is minimized.

According to the present invention, the solid-liquid treatment apparatus is duplicated in the solid-liquid concentration tank and the recirculating tank, and the upper vane for preventing the solid-state overflow is provided at the upper part of the solid-liquid concentration tank. Is introduced into the recirculation tank.

According to the present invention, a lower sedimentation tank is provided so that a solid precipitate can be stably formed in the lower part of the solid-liquid concentration tank, and the lower end of the discharge pipe is provided as an inclined pipe, So that it is possible to minimize the flow of the solid already located in the lower sedimentation tank in the solid-liquid concentration tank.

According to the present invention, the spray tube for forming the water film is directly coupled to the upper part of the dust collecting plate, and the washing water is discharged through the spray hole provided in the spray tube, The washing water can be stably discharged through the spray pipe in a state in which the water pressure is properly controlled through the pressure control valve so that the insulation breakdown between the discharge electrode and the dust collecting plate is not performed, The dust collecting operation can be performed continuously.

According to the present invention, the cleaning water supply tube, the spray tube, and the dust collecting plate are integrated to facilitate the installation of the electrostatic precipitator, and a certain degree of pressure is constantly formed in the cleaning water supply pipe, As a result, unevenness due to the position of the spray hole is minimized, which is advantageous in that it can be applied to both a compact as well as a large-sized electrostatic precipitator.

According to the present invention, when the injection pipe is formed of square pipe, it is relatively easy and simple to form the connection with the dust collecting plate. Accordingly, the installation is easy regardless of the skill of the operator, The dust collecting plate has a structure in which the dust collecting tube supports the dust collecting plate, thereby preventing the formation of a water film on the dust collecting plate, even when the dust collecting plate is twisted during operation.

According to the present invention, water droplets are prevented from splashing even when the water pressure is relatively high, because the cleaning water jetting holes are opposed to the dust collecting plate in a relatively densely spaced space, and thus stable operation can be performed.

According to the present invention, when the process gas is moved from the lower part to the upper part, the recovery tray installed at the lower part of the dust collecting plate functions as a baffle, and the dust can be uniformly distributed, The efficiency can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart showing a recirculating system for washing water for forming a water film of an electrostatic precipitator according to the present invention. FIG.
2 is a perspective view showing the configuration of an electrostatic precipitator in a recirculating system for recycling water for forming a water film of an electrostatic precipitator according to the present invention.
3 is a view showing a water spray forming apparatus provided in an electrostatic dust precipitator of a recirculating system for washing water for forming a water film of an electrostatic dust precipitator according to the present invention,
FIG. 4 is a view of a spray device for forming a water film provided in an electrostatic precipitator in a recirculating system for washing water for forming a water film of an electrostatic precipitator according to the present invention, from one side. FIG.
5 is a view showing a spray tube used in a water film forming spraying device provided in an electrostatic precipitator in a recirculating system for washing water for forming a water film in an electrostatic precipitator according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flow chart showing a recirculation system of a washing water for forming a water film of an electrostatic precipitator according to the present invention. The washing water recirculation system of the present invention is characterized by comprising an electrostatic precipitator 10, a liquid-solidifying apparatus 20, a feed pump 30, a solid-liquid separator 40 and a discharge pipe 50, The wet electrostatic precipitator 10 will be described in detail with reference to FIG. 2 through FIG. 5, wherein the wet electrostatic precipitator 10 removes foreign matters including fine particles contained in the exhaust gas using cleaning water.

The solid-liquid separating device (40) separates the solid-liquid separating device (40) from the solid-liquid containing washing water discharged through the discharge pipe (50) The liquid contained in the solid is finally separated and the supply pump 30 resupplies the solid-removed liquid through the solid-liquid treatment device 20 to the electrostatic precipitator 10, and the discharge pipe 50 ) Supplies the cleaning liquid containing the solid-liquid recovered from the electrostatic precipitator 10 to the solid-liquid treatment device 20.

The solid-liquid separator 40 is provided with a solid-liquid separator 40 for separating fine particles contained in the solid-containing cleaning water discharged from the electrostatic precipitator 10, The solid-liquid treatment apparatus 20 of the present invention is largely divided into a solid-liquid concentration tank 21 and a recirculating tank 22, and the solid-liquid concentration tank 21) and a recirculation tank (22).

The solid-liquid concentrating tank 21 serves to separate the solid from the solid-containing cleaning water supplied through the discharge pipe 50. The solid-liquid is removed from the recycling tank 22 through the solid-liquid concentration tank 21, Liquid flocculant tank 21 and the recycle tank 22 to the electrostatic precipitator 10 through the supply pump 30 after storing the liquid, .

1, it can be seen that the solid-liquid treatment apparatus 20 of the present invention is divided into the solid-liquid concentration tank 21 and the recycle tank 22 through the lunar membrane 23, It can be seen that only the liquid in the upper part is swirled by the recirculation tank 22 in a state in which the upper part is opened and the solid is sinking to the lower part.

In the solid-liquid concentration tank 21, an upper vane 21a is further provided to prevent an overflow of solids, and a lower sedimentation tank 21b is further provided below the solid-liquid concentration tank 21 so that solid precipitation can be stabilized have. Referring to FIG. 1, the upper vane 21a may have any structure as long as it has a structure for preventing the solid from swirling, and a separate filter (not shown) . In addition, the lower sedimentation tank 21b is formed in a form of a funnel that becomes gradually narrower toward the lower part, and a pipe for moving the solid collected by the solid-liquid separation device is formed at the lowest point, .

According to the present invention, an inclined pipe (51) is further provided at a lower portion of the discharge pipe (50), and an end outlet of the inclined pipe (51) is located near a side wall of the lower sedimentation tank . This is to prevent the solid in the state of being already precipitated in the lower sedimentation tank 21b by the solid-containing cleaning water discharged through the electrostatic precipitator 10 from resuspending, and the outlet of the end of the slanting pipe 51 is connected to the solid- (Not shown in the figure) so that the solid contained in the washing water is not supplied to the upper portion of the solid-liquid thickening tank 21, It is also possible to prevent the resolidification of the solid already deposited in the sedimentation tank 21b.

The solid-liquid separating apparatus 40 of the present invention is a solid-liquid separating apparatus in which the solid contained in the lower sedimentation tank 21b provided in the lower portion of the solid-liquid concentration tank 21 of the solid-liquid processing apparatus 20 is supplied, The liquid is removed and the solid remaining after the constant water content is finally treated with the waste sludge.

2 to 5 are views showing the electrostatic precipitator 10 used in the cleaning water recirculation system of the present invention and its detailed configuration, and Fig. 2 is a schematic view showing the construction of the electrostatic precipitator according to the present invention, FIG. 3 is a perspective view of a dust collecting apparatus according to the present invention, FIG. 3 is a view showing a water spray forming apparatus provided in an electrostatic precipitator of a recirculating system for washing water for forming a water film of an electrostatic precipitator according to the present invention, FIG. 5 is a view showing a spray device for forming a water film provided in an electrostatic precipitator of a recirculating system for washing water for forming a water film of an electrostatic precipitator; and FIG. 5 is a view And a spray tube used in a water film forming spraying device provided in the dust collector.

In the conventional wet electrostatic precipitator, if water is sprayed during charging of the electrostatic precipitator, electrical insulation between the dust collecting plate and the discharge electrode is destroyed, so that there is a problem that it is impossible to continuously apply electricity for collection. Accordingly, continuous operation of the electrostatic precipitator is not possible and intermittent charging must be performed. As a result, stable operation of the electrostatic precipitator is hindered, which is a great obstacle to widening the range of the electrostatic precipitator.

In the case of a wet electrostatic precipitator, since the gas temperature is irregularly dropped due to intermittent water injection, application to a gas having a high temperature is limited. In the case of spraying water for cleaning the dust collecting plate, A separate mist removing device is additionally required at the downstream end thereof, so that the gas pressure loss is unnecessarily lost, and there is a problem that the initial investment cost increases due to the additional configuration.

In order to solve the problems of the prior art, the spraying apparatus for forming a water film included in the electrostatic precipitator used in the present invention is configured such that a spray tube 300 for forming a water film is directly coupled to an upper part of the dust collecting plate 400, And the cleaning water supply pipe 100 is provided on the dust collecting plate 400 and the spraying pipe 300 and the pressure is appropriately adjusted through the valve so that even when the charging is continuously performed The insulation between the discharge electrode 500 and the dust collecting plate 400 is not broken and the electrostatic precipitator 10 can be continuously operated.

2 to 5, the dust collecting plate 400 and the discharging electrode 500 are formed as a single piece. However, the present invention is not limited to the plurality of the planar dust collecting plates 40 and the dust collecting plate 400, 3 shows a state in which a plurality of the dust collecting plates 400 are arranged in a row and the washing water supplying pipe 100 is arranged on the upper part of the dust collecting plate 400 It is shown that the cleaning water can be supplied to each of the dust collecting plates in a state in which they are spaced apart from each other by a predetermined distance. In FIG. 2, only one dust collecting plate 400 is formed on the lower part of the washing water supplying pipe 100 for convenience. However, this is for convenience of explanation, and the dust collecting plate 400, The washing water supply pipe 100 and the series of dust collecting plates may be formed continuously in the left and right direction.

In the present invention, a spray tube 300 is coupled to an upper portion of the dust collecting plate 400. The spray tube 300 receives washing water from the washing water supply tube 100 and is cleaned by the surface of the dust collecting plate 400 So that the water flows from the upper part to the lower part. 2 and 3, the washing water is supplied from the washing water supply pipe 100 to the spray pipe 300 through the connection pipe 200, So that the cleaning water supply pipe 100 and the spray pipe 300 can be easily connected to each other. Further, the cleaning water supply pipe 100 and the spray pipe 300 can be easily connected to each other.

The washing water supply pipe 100 is provided with a pressure control valve 110 for controlling the water pressure of the washing water sprayed to the dust collecting plate 400 through the spray pipe 300. A plurality of injection holes 310 having a predetermined diameter are formed in the injection tube 300 and a plurality of injection holes 310 are continuously formed at predetermined intervals over the length of the injection tube 300. The injection pipe 300 used in the present invention may have various shapes such as a circular shape or a rectangular shape in cross section, but may be formed as shown in FIG. 5 when the shape is rectangular. In this case, the injection holes 310 are continuously formed at the lower part of the rectangular spraying tube 300 at regular intervals.

In the present invention, the injection tube 300 may be formed on only one side of the upper part of the dust collecting plate 400, or may be formed on both sides of the dust collecting plate 400, And is formed to be spaced apart from the dust collecting plate 400 by a predetermined distance over the transverse length of the dust collecting plate 400. 5, the injection hole 310 may be formed at a side surface of the injection tube 300 contacting the dust collecting plate 400 to adjust the gap between the dust collecting plate 400 and the injection tube 300, The gap means 320 is provided on the side surface and the gap means 320 is formed at a position where the plurality of injection holes 300 formed continuously in the lower portion of the injection tube 300 are covered or not overlapped with each other, So that the spraying of the washing water to the washing liquid 400 is not disturbed.

5, a plurality of injection holes 310 and a gap means 320 are provided at a lower side of a side surface facing the dust collecting plate 400 in a state where the injection tube 300 is formed of rectangular pipes . When the injection pipe 300 is formed of square pipe, it is relatively easy and simple to form the connection with the dust collecting plate 400. Accordingly, it is easy to install regardless of the skill of the operator, There is an advantage that no problem is caused in the formation of the water film of the dust collecting plate 400. [

When the injection tube 300 is formed directly on both sides of the upper surface of the dust collecting plate 400 as shown in FIG. 2, the rectangular spray tubes provided on both sides of the dust collecting tube 300 may be provided with injection holes A plurality of gap means are formed. The coupling between the dust collecting plate 400 and the injection tube 300 may be band-wise or weld-coupled, or may be mutually coupled in various ways.

In the present invention, a cleaning water recovery tray 11 is further provided at the lower end of the dust collecting plate 400, and the cleaning water recovered through the recovery tray 11 is treated to remove fine dust, And then reused through the supply of the cleaning water through the cleaning water supply pipe 100. The present invention is applicable to both the case where the process gas including fine dust moves horizontally with respect to the dust collecting plate or the case where the process gas vertically moves from the bottom to the top, And the dust collecting efficiency of the electrostatic precipitator can be further improved through the uniform distribution of the exhaust gas.

2 to 4, the recovery tray 11 is surrounded by the collecting plate 400 for the sake of convenience. However, the recovery tray 11 may include a recovery pipe 50, So that the solid-containing detergent solution can be smoothly moved through the discharge pipe 50. In this way, the solid-

The injection pressure of the washing water sprayed through the plurality of spray holes 310 of each spray tube 300 can be collectively controlled by adjusting the pressure control valve 110 provided in the washing water supply pipe 100 . A certain amount of pressure is constantly formed in the cleaning water supply pipe 100 so that the amount of the cleaning water sprayed into the spray hole 310 is kept constant and the irregularity in accordance with the position of the spray hole 310 It is advantageous to be applicable not only to a small size but also to a large-sized electrostatic precipitator

According to the present invention, the washing water from the washing water supply pipe 100 is supplied to the spray pipe 300 through the connection pipe 200 connected to the cleaning water supply pipe 100, And is sprayed to the dust collecting plate at a constant pressure through a plurality of injection holes 310. The pressure is such that the injected washing water does not bounce after colliding against the dust collecting plate.

The present invention is characterized in that the washing water is injected horizontally and horizontally to the dust collecting plate 400 slightly spaced apart at a predetermined interval after being sprayed through the spray hole 310. In the state where the washing water is spaced a predetermined distance from the conventional dust collecting plate, There is no fear that the washing water will be scattered after hitting the dust collecting plate and the insulation between the discharge electrode 500 and the dust collecting plate 400 will be destroyed. In the present invention, the water pressure of the washing water sprayed through the spray hole 310 provided for each spray pipe 300 is uniformly adjusted through the pressure control valve 110 provided in the washing water supply pipe 100 , The structure of the apparatus is simplified, and maintenance is easy.

The plurality of injection holes 310 provided in the present invention may have various sizes depending on the capacity of the electrostatic precipitator, the water pressure applied thereto, and the like, but may have a diameter of about 1 to 5 mm. The interval between the injection holes 310 may be varied according to the injection amount of the washing water, the size of the injection hole, or the water pressure required for the electric dust collector, but is generally 2 to 100 times the diameter of the injection hole 310, So that the washing water injected through the injection hole 310 is superimposed on the dust collecting plate 400 so that dust collects on the entire surface of the dust collecting plate 400. According to the present invention, since the cleaning water jetting holes 310 are opposed to the dust collecting plate 400 in a relatively densely spaced space, the water droplets do not splash even when the water pressure is relatively high, There are advantages.

The gap between the dust collecting plate 400 and the spray hole 310 is spaced apart by a gap means 320 and the gap is also varied depending on the spray amount of the washing water required for the electrostatic precipitator, But it is generally 0.02 to 10 times the diameter of the injection hole 310. This is because the interval is less than 0.02 times the diameter of the injection hole, thereby preventing a situation in which the washing water hits against the dust collecting plate 400 due to the water pressure and prevents the interval from exceeding 10 times the diameter of the injection hole, Thereby preventing a portion of the dust collecting plate 400 from flowing out of the washing water.

A configuration of the washing water supply pipe 100, the connection pipe 200, the spray pipe 300, the dust collecting plate 400 and the discharge electrode 500 shown in FIGS. 2 to 5 and the pressure control valve 110 1 is a flow chart showing a recirculating system for washing water for forming a water film of an electrostatic precipitator in FIG. 1, but a specific connection structure is omitted for the sake of convenience. It will be readily understood by a person skilled in the art.

According to the present invention, since the fine particles and the like are removed and the treated liquid is recycled to the washing water, the solid is finally separated from the liquid through the solid-liquid separator in a state where the liquid is firstly filtered through the first solid- The solid-liquid separation is optimized so that the load in the solid-liquid separator is minimized, the solid-liquid treatment device is duplicated in the solid-liquid concentrator and the recirculating tank, and the solid-liquid overflow vane is provided in the upper part of the solid- A lower settling tank is provided so that the solid overflow from the solid-liquid condensing tank to the recycling tank is minimized, and only the liquid is introduced into the recirculating tank, and the solid precipitate is stabilized in the lower portion of the solid- Due to the characteristics of the slurry pipe, the end outlet of the slant pipe is located at one side of the lower sedimentation tank In the solid-liquid concentration tank by ensuring that the location has the advantage of already minimize the flow of the solid in the sedimentation tank bottom.

According to the present invention, the spray tube for forming the water film is directly coupled to the upper part of the dust collecting plate, and the washing water is discharged through the spray hole provided in the spray tube, The washing water can be stably discharged through the spray pipe in a state in which the water pressure is properly controlled through the pressure control valve so that the insulation breakdown between the discharge electrode and the dust collecting plate is not performed, The dust collecting operation is performed together and the electrostatic dust precipitator can be continuously operated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Electrostatic precipitator 11: Collecting tray
20: Liquid treatment device
21: high concentration tank
21a: Upper vane 21b: Lower settling tank (Cone)
22: recirculation tank 23: lunar membrane
30: Feed pump 40: Solid-liquid separator
50: discharge pipe 51: inclined pipe
100: Cleaning water supply pipe 110: Pressure regulating valve
200: connector
300: Distributor
310: injection hole 320: gap means
400: Collector plate 500:

Claims (4)

1. A recirculating system for washing water for forming a water film in an electrostatic precipitator,
An electrostatic precipitator (10) for removing foreign matter including fine particles contained in the exhaust gas by using washing water;
A discharge pipe 50 for discharging the solid-containing cleaning water recovered from the electrostatic precipitator 10 to the solid-liquid treatment device 20;
A solid-liquid treatment device 20 for separating solid and liquid from the solid-containing cleaning water discharged through the discharge pipe 50;
A solid-liquid separator (40) for finally separating the liquid contained in the solid supplied through the solid-liquid treatment device (20); And
A supply pump 30 for supplying again the solid-removed liquid to the electrostatic precipitator 10 through the solid-liquid treatment device 20;
And,
The solid-liquid treatment apparatus (20)
A solid-liquid concentration tank (21) for separating the solid from the solid-containing washing water supplied through the discharge pipe (50)
A recycle tank 22 for storing solids left after the solid-liquid concentration tank 21 and for supplying the remaining liquid to the electrostatic precipitator 10 through the supply pump 30,
And a rinsing film (23) for separating the solid-liquid concentration tank (21) and the recycling tank (22) from each other,
The solid-liquid separator (40)
The separated liquid is re-supplied to the recycle tank 22,
The electrostatic precipitator (10)
And a plurality of discharge electrodes (500) spaced apart from the dust collecting plate (400) by a predetermined distance,
The dust collecting plate 400 is directly coupled to the dust collecting plate 400 at either one side or both sides of the dust collecting plate 400. The dust collecting plate 400 is spaced apart from the dust collecting plate 400 by a predetermined distance And a plurality of injection holes 310 having a predetermined diameter are formed in the lower portion of the injection tube 300 at a predetermined interval in a continuous manner to form a plurality of injection holes 300, Lt; / RTI &
The washing water supplied through the washing water supply pipe 100 is supplied to the upper portion of the dust collecting plate 400 through the connection pipe 200 And the connection pipe 200 is connected to the spray pipe 100 and the spray pipe 300 so that the connection pipe 200 can be easily connected to the discharge pipe 300 through a rupture And is made of a flexible material that is easy to bend,
A gap means 320 is provided on a side surface of the injection tube 300 coupled with the dust collecting plate 400 so as to be spaced apart from the dust collecting plate 400 by a predetermined distance,
The washing water supply pipe 100 is further provided with a pressure control valve 110 for controlling the water pressure of the washing water sprayed to the dust collecting plate 400 through the spray pipe 300,
The spray holes 310 are formed to have a diameter of 1 to 5 mm and the gap between the spray holes 310 is set such that the surface of the dust collecting plate 400 is completely covered with the sprayed washing water, The diameter of the injection hole 310 is set to be 2 to 100 times larger than the diameter of the injection hole 310,
Wherein an interval between the dust collecting plate (400) and the spray hole (310) spaced apart by the gap means (320) is 0.02 to 10 times the diameter of the spray hole (310) Recirculating system of washing water.
delete The method according to claim 1,
In the upper part of the solid-liquid concentration tank 21,
Further comprising an upper vane (21a) for preventing a solid overflow,
In the lower part of the solid-liquid concentration tank 21,
And a lower sedimentation tank (21b) is further provided so that sedimentation of the solid can be stably performed.
The method of claim 3,
An inclined pipe (51) is further provided at a lower portion of the discharge pipe (50)
The end outlet of the inclined pipe (51)
Is located near one side of the lower sedimentation tank (21b). ≪ Desc / Clms Page number 20 >
KR1020160010817A 2016-01-28 2016-01-28 Recirculating systems for water film formation of the electrostatic precipitator KR101801949B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160010817A KR101801949B1 (en) 2016-01-28 2016-01-28 Recirculating systems for water film formation of the electrostatic precipitator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160010817A KR101801949B1 (en) 2016-01-28 2016-01-28 Recirculating systems for water film formation of the electrostatic precipitator

Publications (2)

Publication Number Publication Date
KR20170090223A KR20170090223A (en) 2017-08-07
KR101801949B1 true KR101801949B1 (en) 2017-11-27

Family

ID=59653884

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160010817A KR101801949B1 (en) 2016-01-28 2016-01-28 Recirculating systems for water film formation of the electrostatic precipitator

Country Status (1)

Country Link
KR (1) KR101801949B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102077909B1 (en) 2018-04-27 2020-02-17 (주)엔노피아 Electric precipitation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006095414A (en) * 2004-09-29 2006-04-13 Hitachi Kiden Kogyo Ltd Sand separation/washing device
KR101455570B1 (en) * 2014-01-29 2014-10-29 주식회사 한국이피 Wet electrostatic precipitator
JP2015205278A (en) * 2011-03-01 2015-11-19 株式会社東芝 Solid-liquid separation apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006095414A (en) * 2004-09-29 2006-04-13 Hitachi Kiden Kogyo Ltd Sand separation/washing device
JP2015205278A (en) * 2011-03-01 2015-11-19 株式会社東芝 Solid-liquid separation apparatus
KR101455570B1 (en) * 2014-01-29 2014-10-29 주식회사 한국이피 Wet electrostatic precipitator

Also Published As

Publication number Publication date
KR20170090223A (en) 2017-08-07

Similar Documents

Publication Publication Date Title
KR100929905B1 (en) Bipolar Electrostatic Dielectric Aggregation Microparticle Collector
KR101901572B1 (en) Ship exhaust gas removal technology
CN101460251A (en) Wet electrostatic precipitator
KR101436281B1 (en) Rain water treatment apparatus
CN205127613U (en) Wet type dust collection unit
KR20140089722A (en) Liquid layer forming apparatus for wet electrostatic precipitator
CN101234284B (en) Atomizing corona plasma flue gas purifying equipment
KR101971917B1 (en) Dust Collector of Electrostatic Spray Device
KR101318263B1 (en) A precipitator for a nursery to cycle filtration
KR101995742B1 (en) Wet Type Dust Collector Using Electrospray and Vortex
KR101801949B1 (en) Recirculating systems for water film formation of the electrostatic precipitator
KR102198334B1 (en) Wet Type Dust Collector having Multiple Nozzles with Electrospraying using Water Level Difference
KR101995733B1 (en) Wet Type Dust Collector Using Electrospray and Vortex
KR20140096413A (en) Vehicle-mounted type waste water treatment apparatus
KR20170136114A (en) Pressurized wet electrostatic precipitator
CN215782397U (en) Environment-friendly oil smoke purifier
KR20170090217A (en) A electric precipitator with injection device forming a water film
KR20200043780A (en) A gas purifier with self-purifying function
NL1035683C2 (en) Device and method for separating insoluble components from a liquid.
CN109894280B (en) Water film electrostatic oil mist purifying equipment
KR20150062406A (en) Retrofitting water purifying system of settling tank using DAF module
CN213357164U (en) Integrated reaction separation and purification device
CN211170018U (en) Industrial wastewater treatment equipment
JP7305090B2 (en) Valuable metal powder recovery method from resist waste liquid and valuable metal powder recovery apparatus
KR100293244B1 (en) Device for separation of solids, liquid and gases from sewage and wastewater

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant