KR101774774B1 - Apparatus for removing scale in flue-gas desulfurization facility - Google Patents

Abstract

The present invention relates to a device of removing scales generated in a process in which sulfur oxides are removed by reacting an exhaust gas flowing into an upper absorption tower through an intake duct and then sent downward through inner pipes with limestone slurry stored in a lower absorption tower in a flue gas desulfurization facility partitioned into the upper and lower absorption towers and having the multiple inner pipes vertically installed between the upper and lower absorption towers. Inside the intake duct, a cooling unit lowering a temperature of the exhaust gas by injecting cooling water, a moisture separating unit removing moisture contained in the exhaust gas from which the temperature is lowered, and a dust collecting unit collecting and removing fine dust contained in the exhaust gas from which the moisture is removed are installed. A washing unit is installed in an upper part of the inner pipe. The washing unit includes: a washing shaft arranged in a horizontal direction and receiving supplies of compressive air and a washing solution; multiple washing branch pipes connected to a lower part of the washing shaft and enabling the washing solution to flow therein; piston pipes retracted by a pressure of the solution inside the washing branch pipes, formed to be inserted into the inner pipes in the lower side, and enabling the washing solution to flow therein; piston plates connected to upper parts of the piston pipes, moving with the piston pipe while adhering to inner circumferences of the washing branch pipes, and having an intake hole penetrated through the center; elastic members installed on lower outer circumferences of the piston plates and extended and shrunk by the pressure of the solution; and washing nozzles formed in the lower part of the washing shaft and injecting the washing solution in various directions.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flue gas desulphurization apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale removal apparatus for an exhaust gas desulfurization facility, and more particularly, to a scale removal apparatus for an exhaust gas desulfurization facility capable of removing scale attached with water, dust, foreign matter, gypsum, .

Generally, in boilers used for plant facilities such as thermal power plants, since the exhaust gas generated by the combustion of fossil fuels such as coal contains air pollutants such as ash, sulfur oxides (SOx) and fine dusts, If they are released into the atmosphere, they cause severe air pollution problems. In particular, sulfur oxides are absorbed in the atmospheric water vapor and cause acid rain, which is a major cause of devastation of forests and soils.

Therefore, a flue gas desulfurization process is being performed to remove sulfur oxides in the flue gas discharged from the boiler before they are discharged to the atmosphere. In this flue gas desulfurization process, slaked lime or activated carbon powder as a neutralizing agent is sprayed and contacted with the flue gas There is a dry desulfurization method for removing sulfur components and a wet desulfurization method for spraying an absorption liquid using caustic soda, magnesium hydroxide, and a slurry of limestone as a neutralizing agent and bringing the absorption liquid into contact with the exhaust gas to remove sulfur components. In particular, the limestone-gypsum process, which can produce gypsum as a by-product by using limestone as an absorbent of sulfur oxides in a wet desulfurization process, is widely used.

1, the absorption tower of the flue gas desulfurization facility is divided into an upper absorption tower 10 and a lower absorption tower 20, and the upper absorption tower 10 and the lower absorption tower 20 A slurry is stored in the lower absorption tower 20 and is discharged from the boiler and flows into the upper absorption tower 10 through the inlet duct 40 The flue gas is lowered through the inner pipe 30 so that the sulfurous acid gas reacts with the absorption liquid in the form of limestone slurry to generate gypsum and the lower absorption tower 20 is provided with a stirrer 50 to stir the limestone slurry Promote. Here, the limestone slurry can be injected toward the flue gas for the primary desulfurization reaction in the upper absorption tower 10, and at this time, the limestone slurry also moves to the lower absorption tower 20 through the internal piping 30.

When these flue gas desulfurization processes are carried out continuously, moisture, dust, foreign substances, gypsum, etc., which are combined with each other are deposited on the bottom of the upper absorption tower 10, So that the scale S can be formed. In this case, the flow of the exhaust gas passing through the inner pipe 30 is not smooth, the internal pressure of the upper absorption tower 10 increases, the amount of gas injected into the absorption liquid of the lower absorption tower 20 decreases, If the scale is severe, there is a problem that the operation of the flue gas desulfurization facility must be stopped.

In this case, the operator enters the inside of the absorption tower and directly injects water with the high-pressure hose connected to the high-pressure pump to remove the scale formed on the bottom of the upper absorption tower 10 and the inner wall of the inner pipe 30. However, There is a problem that the maintenance and replacement are costly because the internal piping is damaged.

On the other hand, according to related related art, Patent Document 1 discloses that an inlet duct through which flue gas is introduced and an outlet duct through which flue gas is exhausted are connected, a moisture separator for removing moisture is installed therein, There is disclosed an absorption tower of a flue gas desulfurization facility in which a perforated plate having a plurality of through holes is fixed to an inner surface of an absorption tower.

Korean Registered Patent No. 10-0508155 (published on April 4, 2005)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve all of the problems described above, and it is an object of the present invention to suppress scale formation in an upper absorption tower and an internal piping and to periodically spray a cleaning liquid uniformly toward an inner wall of an upper absorption tower and an inner pipe, Which is capable of increasing the desulfurization efficiency by removing the desulfurization equipment.

In addition, when the scale is fixed to the internal piping by long use, it is possible to separate and remove the piping attached to the internal piping, repair it, replace it with a new piping, or use the cleaned internal piping for easy maintenance and durability. There is a purpose in what can be increased.

In order to solve the above problems, the present invention provides a flue gas desulfurization apparatus which is divided into upper and lower absorption towers and in which a plurality of internal pipes are vertically arranged between upper and lower absorption towers, the flue gas introduced into the upper absorption tower through the inlet duct The present invention relates to an apparatus for removing a scale formed in a process of removing sulfur oxides by reacting with a limestone slurry stored in a lower absorption tower through an internal pipe. The apparatus includes a cooling unit for reducing the temperature of the exhaust gas by injecting cooling water into the inlet duct, A moisture separator for removing moisture contained in the exhaust gas whose temperature has been lowered, and a dust collecting unit for separating and removing fine dust contained in the flue gas from which moisture has been removed, and a cleaner is provided on the upper side of the inner pipe, The cleaning section includes a cleaning shaft disposed horizontally and supplied with the cleaning liquid along with the compressed air, A piston tube which is formed in the cleaning branch pipe so as to allow the cleaning liquid to flow into and out of the lower internal pipe while allowing the cleaning liquid to pass through the piston pipe; An elastic member which is connected to the upper end portion and is closely contacted with the inner circumferential surface of the cleaning branch pipe and moves together with the inlet hole passing through the center thereof and which is stretched and contracted by the pressure of the fluid on the outer circumferential surface of the piston pipe below the piston; And a spraying means formed at a lower end of the piston tube for spraying the cleaning liquid in various directions.

The moisture separator of the present invention may be configured such that a plurality of bend plates having various bends are connected to each other with a plurality of front and rear vertical bars spaced apart from each other to connect the exhaust gas to the rear side, The upper and lower protrusions are connected in an oblique direction, or the upper and lower protrusions, the lower protrusion and the fastening portion are connected to each other in a diagonal direction A connection portion having a swash plate shape to be connected, and a horizontal plate-like coupling portion formed at the front and rear end portions and fastened to the front and rear vertical bars, respectively.

The dust collecting unit of the present invention may further include a plasma eliminator for removing and removing fine dust contained in the exhaust gas by a plasma reaction, and a plurality of dust collecting plates connected to the power source for electrically collecting the fine dust that has passed through the plasma eliminator A plurality of swash plates formed in an inverted V shape so as to have inclined surfaces on the front and rear surfaces are spaced apart from each other by a fixing bar on both sides so as to be fastened together And may be a dust filter.

In addition, the spraying means of the present invention may have a main nozzle formed at the lower end center, and a plurality of auxiliary nozzles having an inclined shape with a diameter decreasing toward the lower side along the outer peripheral surface.

In the cleaning shaft of the present invention, a plurality of cleaning nozzles may be formed in the lower portion.

Further, the present invention is characterized in that a separation pipe is inserted into the inner pipe and is detachably mounted by a fastening means, and the separation pipe is formed to have a diameter having a predetermined clearance from the inner circumferential surface of the inner pipe when the pipe is inserted into the inner pipe A plurality of ring-shaped annular grooves are formed on the outer circumferential surface, a cushion ring is mounted on the annular groove, a flange is formed on the upper end of the separation pipe, a fastening hole is formed in the flange, And a handle for gripping may be formed at the upper end.

In the cleaning unit of the present invention, the cleaning liquid is supplied through a cleaning piping connected to an external cleaning liquid tank, an inflow pump is installed in the cleaning piping, compressed air compressed by the air compressor is connected to the air piping, The cleaning pipe may be connected to the cleaning shaft.

The cleaning solution sprayed from the cleaning part may contain 20 to 30% by weight of formic acid, 10 to 15% of acetic acid, 5.0 to 10% of sodium hydrogen sulfite, 20 to 30% of lithium phosphate, 10 to 30% of amide imidazolium, 20%, 1 to 5% of polyoxyethylene lauryl ether, 1 to 5% of a penetrating agent and 5 to 10% of sodium gluconate.

According to the present invention, it is possible to increase the desulfurization efficiency by suppressing the formation of scale on the upper absorption tower and the internal piping and regularly spraying the cleaning liquid evenly toward the inner wall of the upper absorption tower and the inner pipe to remove most of the scale. .

In addition, when the scale is fixed to the internal piping by long use, it is possible to separate and remove the piping attached to the internal piping, repair it, replace it with a new piping, or use the cleaned internal piping for easy maintenance and durability. There is an effect that can be increased.

1 is a view showing an absorption tower according to the prior art.
2 is a diagram of a descale apparatus according to an embodiment of the present invention.
3 is a view showing a water separator according to an embodiment of the present invention.
4A and 4B are views showing a dust collecting part according to an embodiment of the present invention.
5 is a view illustrating a cleaning unit according to an embodiment of the present invention.
6A and 6B are views showing the operation of the cleaning unit according to an embodiment of the present invention.
Figs. 7A and 7B are views showing the isolation pipe of the present invention. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, specific details for implementing a scale removal apparatus for a flue gas desulfurization apparatus according to the present invention will be described in detail with reference to examples.

2, the flue gas desulfurization system according to the present invention is characterized in that an upper absorption tower 1 and a lower absorption tower 2 are formed on upper and lower sides, respectively, and a plurality of The inner duct 3 is installed in the vertical direction and the inlet duct 4 through which the exhaust gas discharged from the boiler flows is connected to the upper absorption tower 1 and the discharge duct 4 through which the exhaust gas is discharged to the lower absorption tower 2 5) are connected.

The flue gas introduced into the upper absorption tower 1 through the inlet duct 4 flows downward through the internal piping 3 installed in the vertical direction and reacts with the limestone slurry S stored in the lower absorption tower 2 (SOx) is removed. In this flue gas desulfurization process, scale is formed on the bottom 1a of the upper absorption tower 1 and on the inner wall of the inner pipe 3.

The scale removing apparatus for removing such a scale includes a cooling unit 50, a water separation unit 100 and a dust collecting unit 200 installed in the inlet duct 4 and a cleaning unit 300 installed in the upper absorption tower 1 (Not shown), and may further include a separation pipe 400.

The cooling unit 50 is connected to the inside of the inflow duct 4 and lowers the temperature of the exhaust gas by injecting cooling water through a cooler (not shown).

3, the water separating unit 100 removes water contained in the exhaust gas, which is installed in the vertical pipe 4a of the inlet duct 4 and has a lowered temperature. In the lower part of the vertical pipe 4a, The water level sensor detects the level of the water level sensor 4b when the level of the water level sensor 4b reaches a predetermined level and an alarm is generated so that the operator can check the water level of the water level sensor 4b, So that the collected water can be discharged to the outside.

That is, the exhaust gas that has passed through the cooling section 50 includes droplets. These droplets are combined with the dust and deposited on the bottom a of the upper absorber 1 or attached to the inner wall of the inner pipe 3, And scale formation, so that the exhaust gas passes through the water separating unit 100 to remove moisture.

For this, the water separator 100 has a plurality of bending plates 110, which are substantially S-shaped and have a plurality of bends, are spaced apart from each other, and a plurality of upper and lower supports 110 fixed in the inlet duct 4 The curved plate 110 is connected to the frames 120 and 130. The curved plate 110 includes a vertex 140 having a vertical plate shape protruding to one side, a valley 150 having a vertical plate shape protruding to the other side, A connecting portion 160 having an oblique plate shape connecting the valley portion 150 in an oblique direction or connecting the hill portion 140 with the connecting portion 170, the valley portion 150 and the connecting portion 170 in the diagonal direction, Like fastening portions 170 formed on the upper and lower support frames 120 and 130, respectively. At this time, a plurality of the hill part 140, the valley part 150, and the connecting part 160 may be formed and connected to each other.

The bending plate 110 having such a structure is formed by alternately connecting the vertical plate and the swash plate so that the flue gas is naturally guided and smoothly passed to the upper side, and the water is separated by collision or adhesion to increase the removal efficiency.

That is, the flue gas passes through the gaps between the bending plates 110, but the moisture contained in the flue gas flows into the gaps between the bending plates 110 and collides with the bent portions, Falls and attaches to the bending plate 110, and the attached water drops along the vertical surface of the vertical plate and the downward inclined surface of the swash plate by gravity to fall into the lower water collecting chamber 4b, .

4A, the dust collecting unit 200 separates and removes fine dust contained in the flue gas that has been installed in the horizontal pipe of the inlet duct 4 to remove moisture. The dust collecting unit 200 includes a plate-shaped ground electrode 211, And a plasma eliminator 210 configured to alternately arrange the received discharge electrodes 212 and to remove and remove fine dust contained in the exhaust gas by a plasma reaction. The discharge electrode 212 generates a charge between the ground electrode 211 and the discharge electrode 212 by receiving a high voltage from a power source, and charges the fine dust contained in the exhaust gas into a positive electrode.

An electrostatic precipitator 220 is installed in the rear of the plasma eliminator 210. The electrostatic precipitator 220 is connected to a power source and a plurality of dust collecting plates 221 are densely arranged and a high voltage is applied from a power source, And the fine dust charged to the positive electrode by the plasma remover 210 is electrically drawn and collected to electrically collect and remove the fine dust.

Referring to FIG. 4B, the fine dust that has passed through the electrostatic precipitator 220 is finally collected and removed by the dust filter 230. The dust collecting filter 230 has a plurality of swash plates 231 formed in the inverted V shape so as to have a slope downward on the front and rear surfaces, Are fastened and supported by fastening bars 232 vertically installed on both sides. Accordingly, the electrostatic precipitator 220 provided with the dust collecting plate 221 formed in the vertical direction and the dust collecting filter 230 formed in the horizontal direction are successively arranged, so that the fine dusts passing through the electrostatic dust collector 220 are perpendicular to the dust collecting plate 221 Almost all the fine dusts can be collected while passing through the dust filter 230 arranged in the horizontal direction, and the removal effect can be increased by the inclined plates 231 having the inverted V shape. This prevents the moisture, dust, and foreign matter contained in the exhaust gas from accumulating on the bottom (a) of the upper absorber 1 or sticking to the inner wall of the inner pipe 3 to form the scale S in advance .

5, the cleaner 300 is installed in the upper absorption tower 1 on the upper side of the internal pipe 3, and the cleaning shaft 310 is disposed inside the upper absorption tower 1 in the horizontal direction And is supplied with the cleaning liquid along with the compressed air. At this time, the cleaning shaft 310 is formed with a plurality of cleaning nozzles 315 downward at a predetermined interval in the lower part thereof, so that the scale a can be removed by cleaning the bottom a of the upper absorption tower 1.

The cleaning shaft 310 has a plurality of cleaning tubes 320 spaced apart from each other and communicating with each other in an orthogonal direction so that a cleaning liquid passes through the cleaning tube 310. A piston tube 330 is disposed inside the cleaning tube 320, And flows in and out of the cleaning branch pipe 320 by the pressure of the fluid. A piston plate 340 is connected to the upper end of the piston tube 330. The piston plate 340 is closely attached to the inner circumferential surface of the cleaning branch pipe 320 and has an inlet hole formed at the center thereof. An elastic member 350 is disposed on the outer circumferential surface of the piston tube 330 at the lower side of the piston plate 340. The piston member 340 is pressed or released by the pressure of the fluid, It is newly built.

6A, when the cleaning liquid is not supplied to the cleaning shaft 310, the piston tube 330 is positioned on the upper side of the inner pipe 30, and the cleaning liquid is compressed into the cleaning shaft 310 as shown in FIG. The piston plate 340 pressed by the pressure of the fluid flowing inside the cleaning branch pipe 320 is moved downward while being closely attached to the inner peripheral surface of the cleaning pipe 320, So that the piston tube 330 also moves downward and a part of the piston tube 330 is drawn into the inner pipe 3 and the elastic member 350 is also compressed. At this time, the cleaning liquid is drawn into the interior of the piston tube 330 through the inlet holes, and the cleaning liquid is sprayed toward the inside of the internal pipe 3 through the spraying means 360 formed at the lower end of the piston tube 330, Is removed.

A plurality of auxiliary nozzles 362 are formed along an inclined surface having a diameter decreasing toward the lower side along the outer peripheral surface of the atomizing means 360. The cleaning liquid is supplied to the main nozzle The cleaning liquid is sprayed evenly through the plurality of auxiliary nozzles 362 in various directions and the entire inner circumferential surface of the inner wall of the inner pipe 3 is sprayed to the inner wall of the inner pipe 3, It is possible to increase the desulfurization efficiency by removing most of the scale.

When the supply of the compressed air and the rinsing liquid is stopped when the removal of the scale by the rinsing liquid is terminated, the pressure of the fluid pressurizing the piston plate 340 is released and the elastic member 350 is stretched by the restoring force of the elastic member 350 So that the piston tube 330 drawn into the inner pipe 3 rises upward and is positioned above the inner pipe 3.

In addition, the cleaning part 300 receives the cleaning liquid through the cleaning pipe 380 connected to the cleaning liquid tank 370 provided outside the cleaning shaft 310, and the cleaning pipe 380 is provided with the inflow pump 390 And the cleaning liquid is supplied to the cleaning shaft 310. The cleaning pipe 380 is connected to the air pipe P so that the compressed air compressed by the air compressor A flows into the interior of the cleaner so that the mist can be sprayed.

The cleaning liquid sprayed from the cleaning part 300 may be prepared by adding 20 to 30% of formic acid, 10 to 15% of acetic acid, 5.0 to 10% of sodium hydrogen sulfite, 20 to 30% of lithium phosphate, 10 to 20% of amide imidazolium, 1 to 5% of polyoxyethylene lauryl ether, 1 to 5% of a penetrating agent and 5 to 10% of sodium gluconate.

The formic acid is effective to remove the inorganic scale and is added in the range of 20 to 30 wt%, and the lithium phosphate is added in the range of 20 to 30 wt% for removing the scale containing the hydrogen fluoride component, And lithium phosphate react with each other to produce lithium fluoride and phosphoric acid. However, since lithium phosphate has a low solubility in water, acetic acid is added in a range of 10 to 15 wt%. Sodium bisulfite is used to remove scales containing chromium components, and hexavalent chromium is reduced to trivalent chromium and precipitated with hydroxides. Amide imidazolium is used as a cationic surfactant in a range of 10 to 20% by weight to generate bubbles in the cleaning liquid to increase the contact area with the scale to increase the scale removal rate. However, when the amide imidazolium is excessively added, there is a problem that the viscosity of the liquid increases and pumping is difficult. The polyoxyethylene lauryl ether is used as a dispersant in the range of 1 to 5% by weight to accelerate the penetration, dispersion and emulsification action on the scale. However, if it is contained excessively, the storage stability is poor, . The sodium gluconate is used in a range of 5 to 10 wt%, sprayed with the cleaning liquid, and coated on the inner wall of the inner pipe to inhibit corrosion of the inner wall and prevent scale formation.

7A and 7B, the separating pipe 400 has a cylindrical body 410, a flange 420 is formed at the upper end of the body 410, and the flange 420 is provided with a fastening hole 421 And is connected to the bottom surface of the upper absorption tower 1 on the outer side of the upper end of the inner pipe 3 through the fastening means 422. The flange 420 is provided with A handle 430 may be formed.

Further, the separation pipe 400 is inserted into the inner pipe 3 and is detachably mounted by the fastening means 422. The diameter of the separation pipe 400 is smaller than that of the inner pipe 3 so that the diameter of the separation pipe 400 and the length of the inner pipe 3 when the separation pipe 400 is inserted into the inner pipe 3 And the clearance 460 facilitates the detachment and detachment of the separating pipe 400. [0051] As shown in FIG.

A plurality of ring-shaped annular grooves 440 are formed on the outer circumferential surface of the separation pipe 400. A buffer ring 450 is mounted on the annular groove 440 and the gap 460 is filled with a buffer ring 450. [ So that the flue gas descending downward can rise to the upper side and the desulfurization efficiency can be prevented from being lowered.

As a result, the scale removal apparatus of the flue gas desulfurization apparatus according to the present invention suppresses scale formation in the upper absorption tower and the internal piping, and regularly discharges the cleaning liquid uniformly toward the inner wall of the upper absorption tower and the inner pipe to remove most of the scale When the scale is fixed to the inner pipe by long use, it is possible to separate and remove the separation pipe installed in the inner pipe, to replace it with a new separation pipe, or to use a clean inner pipe Therefore, it is easy to repair and the durability can be increased.

The present invention is not limited to the above-described embodiments. Anything having substantially the same constitution as the technical idea described in the claims of the present invention and achieving the same operational effect is included in the technical scope of the present invention.

* Conventional technology
10. Upper absorption tower
20. Lower absorber
30. Internal piping
40. Inlet duct
50. Stirrer
* Invention
1. Upper absorption tower 2. Lower absorption tower
3. Internal piping 4. Inlet duct
5. Exhaust duct 50. Cooling section
100. The water separation unit
110. Bending plate 120. Upper support frame
130. Lower support frame 140,
150. Lower part 160. Connection part
170. Coupling part 200. Dust collection part
210. Plasma eliminator 211. Earth electrode
212. Discharge electrode 220. Electrostatic precipitator
221. Dust Collector 230. Dust Filter
231. Swash plate 232. Fastening bar
300. Cleaning section 310. Cleaning shaft
315. Cleaning nozzle 320. Cleaning nozzle
330. Piston tube 340. Piston plate
350. Elastic member 360. Spraying means
361. Main nozzle 362. Auxiliary nozzle
370. Cleaning liquid tank 380. Cleaning piping
390. Inlet Pump 400. Separate Piping
410. Body 420. Flange
421. Fastening hole 422. Fastening means
430. Handle 440. Annular groove
450. Buffer ring 460. Clearance
A. Air Compressor P. Air Piping
G. Fluease S. Limestone slurry

Claims (8)

The flue gas introduced into the upper absorption tower through the inlet duct in the flue gas desulfurization apparatus partitioned by the upper and lower absorption towers and provided with a plurality of internal piping in the vertical direction between the upper and lower absorption towers descends through the internal piping, To a device for removing scale formed in the process of removing sulfur oxides by reacting with a limestone slurry stored in a reactor,
A cooling unit for reducing the temperature of the exhaust gas by injecting cooling water into the inlet duct, a moisture separator for removing moisture contained in the exhaust gas whose temperature has been lowered, and a dust collecting unit for separating and removing the fine dust contained in the exhaust gas Installed,
A cleaning shaft provided on the upper side of the inner pipe, the cleaning part being disposed in a horizontal direction and supplied with the cleaning liquid together with the compressed air; a plurality of cleaning parts formed in communication with the cleaning shaft in the downward direction, A piston tube which is formed to be able to be introduced into the lower internal pipe while being exposed to the inside of the lower internal pipe by the pressure of the fluid in the cleaning pipe and is connected to the upper end of the piston tube, An elastic member disposed on the outer circumferential surface of the piston tube at the lower side of the piston plate to be expanded and contracted by the pressure of the fluid; and an elastic member formed at the lower end of the piston tube for spraying the cleaning liquid in various directions And a spraying device for spraying the flue gas.
The method according to claim 1,
The water separation unit is configured to connect and dispose a plurality of bending plates having various bends in a standing state to an upper and a lower support frame fixed to the inside of the inflow duct,
The bending plate is formed by connecting a mountain portion of a vertical plate shape protruding to one side, a valley portion of a vertical plate shape protruding to the other side, and a mountain portion and a valley portion in an oblique direction or connecting an mountain portion and a coupling portion, a valley portion and a coupling portion in a diagonal direction A connecting plate having a swash plate shape, and a fastening portion formed in an upper plate and a lower plate, respectively, and fastened to the upper and lower support frames, wherein the straight plate and the swash plate are alternately connected to each other so that the flue gas is guided upward, Or by attaching the scaffold to the scaffold.
The method according to claim 1,
The dust collecting unit includes a plasma eliminator for removing and removing fine dust contained in the exhaust gas by a plasma reaction,
An electrostatic precipitator connected to the power source and having a plurality of dust collecting plates for electrically collecting fine dust that has passed through the plasma eliminator,
A plurality of swash plates formed in an inverted V shape so as to have an inclined surface on the front and rear surfaces, respectively, while collecting and removing fine dust that has passed through the electrostatic precipitator, are connected to the dust collecting filter while being spaced apart from each other by a fastening bar Wherein the flue gas desulfurization apparatus is a flue gas desulfurization apparatus.
The method according to claim 1,
Wherein the atomizing means includes a plurality of auxiliary nozzles having a main nozzle formed at a lower center and having an inclined shape with a diameter decreasing toward the lower side along an outer peripheral surface thereof.
The method according to claim 1,
Wherein the cleaning shaft has a plurality of cleaning nozzles formed in a lower portion thereof.
The method according to claim 1,
A separation pipe is inserted into the inner pipe and is detachably mounted by a fastening means,
Wherein the separation pipe is formed to have a diameter having a predetermined clearance from the inner circumferential surface of the inner pipe when the pipe is inserted into the inner pipe, a plurality of ring-shaped annular grooves are formed on the outer circumferential surface,
Wherein the separating pipe is formed with a flange at an upper end thereof, and a fastening hole is formed in the flange and is fastened to an upper end of the inner pipe, and a handle for gripping is formed at an upper end.
The method according to claim 1,
The cleaning part is supplied with a cleaning liquid through a cleaning pipe connected to an external cleaning liquid tank, an inflow pump is installed in the cleaning pipe, compressed air compressed by the air compressor is connected to the air pipe, and the cleaning pipe is connected to the cleaning shaft And an outlet of the flue gas desulfurization apparatus.
The method according to claim 1,
Wherein the cleaning liquid sprayed from the cleaning unit contains 20 to 30% by weight of formic acid, 10 to 15% of acetic acid, 5.0 to 10% of sodium hydrogen sulfite, 20 to 30% of lithium phosphate, 10 to 20% of amide imidazolium, 1 to 5% of ethylene lauryl ether, 1 to 5% of a penetrating agent and 5 to 10% of sodium gluconate.

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