KR101746096B1

KR101746096B1 - Apparatus For Eliminating White-smoke Of Double Tube Structure

Info

Publication number: KR101746096B1
Application number: KR1020150110175A
Authority: KR
Inventors: 이후근
Original assignee: (주)써스텍
Priority date: 2015-08-04
Filing date: 2015-08-04
Publication date: 2017-06-15
Also published as: KR20170016721A

Abstract

Disclosed is a double tube structure whitening device capable of smoothly inducing the growth of a droplet without increasing its height and sufficiently mixing a fluid with a high-temperature outside air. The apparatus has a supply part for supplying a fluid, a main body connected to the supply part and supplied with a fluid and having a fluid flow path formed therein, and a spray part provided in the flow path of the main body to spray water to the fluid &Lt; / RTI > The main body has a flow switching portion for changing the flow direction of the fluid at least once in a vertical direction.

Description

[0001] Apparatus For Eliminating White-smoke Of Double Tube Structure [

The present invention relates to a white smoke removing apparatus, and more particularly, to a double tube structure white smoke removing apparatus for reducing white smoke generated when a fluid is discharged into the atmosphere.

Generally, incinerators, metal melting furnaces, and wet desulfurization facilities, which are facilities for discharging air pollutants, discharge high-temperature exhaust gas containing high-concentration pollutants during operation to the atmosphere and remove pollutants contained in the exhaust gas Use a dust collecting facility to remove harmful substances by spraying an aqueous solution. As the dust collector sprays water on the discharged hot exhaust gas, the exhaust gas at the outlet is discharged in a saturated state of high temperature and high humidity.

Since the moisture contained in the exhaust gas contains saturated moisture which can not be removed from the dust collecting facility, the exhaust gas containing the saturated moisture is condensed while being cooled by the cold outside atmosphere, and the saturated moisture in the exhaust gas, As the state changes, white smoke, which is a water vapor band, is formed. Such white smoke causes viscous pollution, and water droplets are excessively generated and fall down to the vicinity of the chimney, causing discomfort or causing ice sheets in the winter season.

Korean Patent Registration No. 10-1126022 (Mar. 03, 2012), which is filed prior to the present application, discloses a device for removing white smoke which can reduce the white smoke occurring during discharge of a fluid containing water vapor.

FIG. 1 is a configuration diagram showing a conventional white smoke removing apparatus, and FIG. 2 shows an operational example of a conventional white smoke removing apparatus.

1 and 2, the apparatus for removing white smoke 100 includes a supply unit 110, an apparatus body 120, a spray unit 130, a dispersing member 160, a liquid accumulating unit 170, An outside air supply unit 190, a storage unit 200, and a heat exchange unit 210. [

A fluid containing water vapor is supplied to the apparatus main body 120 through the supply part 110. [ The supply unit 110 includes a flow pipe 112 through which water vapor flows and a suction fan 114 connected to the flow pipe 112 to introduce steam into the apparatus main body 120. The flow pipe 112 is connected to the chimney 10 and the fluid containing the water vapor discharged through the chimney 10 flows into the flow pipe 112 by the suction fan 114, .

The apparatus main body 120 is provided with a spray unit 130, which is a nozzle for spraying water for phase-changing and condensing the water vapor contained in the fluid supplied from the supply unit 110. At one side of the apparatus main body 120, an opening / closing member 122 for maintenance of equipment is provided.

The injection unit 130 injects water into the inflow fluid, and comprises a first injection unit 140 and a second injection unit 150. The first injection unit 140 includes a first supply pipe 142 through which water to be sprayed by the fluid is supplied and a plurality of first injection nozzles 144 which are installed in the first supply pipe 142 and inject water. The second injection unit 150 is disposed on the downstream side of the first injection unit 140 on the flow path of the fluid. The second injection unit 150 includes a second supply pipe 152 through which water to be injected by the fluid is supplied and a plurality of second injection nozzles 154 which are installed in the second supply pipe 152 and inject water into the fluid do.

The dispersion member 160 is provided in the apparatus main body 120 so as to be disposed at the front end of the injection unit 130 on the flow path of the fluid. The dispersing member 160 is composed of a first dispersing member 162 and a second dispersing member 164. The first dispersing member 162 is disposed below the first ejecting unit 140 and includes a plurality of through holes 162a so that the fluid primarily dispersed by the condensed water stored in the storing portion 200 is more So as to uniformly flow toward the upper side. The second dispersing member 164 is disposed between the first ejecting unit 140 and the second ejecting unit 150 and has a plurality of through holes 164a so that the fluid passing through the first ejecting unit 140 To flow more uniformly toward the upper side.

The liquid droplet forming unit 170 is a space formed at the rear end of the ejecting unit 130 and in which liquid droplets generated from the water vapor contained in the liquid are grown. The adsorption unit 180 (Demister) is provided at the upper end of the apparatus main body 120 to adsorb droplets contained in the discharged fluid. The adsorption unit 180 includes a first adsorption member 182 for adsorbing the liquid droplets contained in the fluid and a second adsorption member 184 for adsorbing the remaining droplets disposed at the rear end of the first adsorption member 182, .

In the lower part of the apparatus main body 120, a storage part 200 is provided to store the condensed water recovered.

The heat exchange unit 210 exchanges heat between the condensed water condensed in the apparatus main body 120 and the sucked outside air to supply the outside air to the apparatus main body 120 to be mixed with the fluid discharged from the apparatus main body 120. The heat exchange unit 210 includes a heat exchanger 212, an outside air inlet fan 214, a connection pipe 216, and a makeup water supply pipe 218. The heat exchanger 212 heat-exchanges the sucked outside air with the condensate water supplied from the apparatus main body 120. The heat exchanger (212) has a heat exchange pipe (212a) through which the condensed water supplied from the storage part (200) flows.

The condensed water stored in the storage unit 200 flows into the heat exchange pipe 212a through the condensate pipe 220 connecting the heat exchanger 212 and the storage unit 200. [ The condenser tube 220 is provided with a pump 222. The replenishment water supply pipe 218 is connected to the injection unit 130 so that the condensed water heat exchanged with the outside air is supplied again to the injection unit 130.

Referring to FIG. 2, a fluid containing water vapor is first introduced into the interior of the apparatus main body 120 by the supply unit 110. The introduced fluid passes through the first dispersing member 162 and water is injected from the first injecting unit 140 so that the size of the droplet is increased by the condensing effect and gas-liquid contact. Thereafter, the ambient air is supplied by the ambient air supply unit 190 to the fluid whose droplet size has increased, and then passes through the second dispersion member 164. Thereafter, water is injected through the second injection unit 150 to further increase the size of the droplet. A sufficient time is secured for the droplet to pass through the droplet deposition station 170. [ Thereafter, the fluid passes through the adsorption unit 180 and the condensed water is recovered. The condensed water adsorbed by the adsorption unit 180 falls and is recovered to the storage unit 200 and reused by the heat exchange unit 210.

Since the conventional white smoke removing apparatus has a structure in which the liquid flows upward from the bottom and the liquid droplets increase, there is a problem that the height of the apparatus must be increased to remove a large amount of white smoke. Further, when a plurality of injection units are constructed, there is a problem that the height of the apparatus is increased due to the structure in which the injection units are arranged side by side in the longitudinal direction. In addition, there is a problem that the flue gas removing efficiency is lowered because the fluid and the high temperature outside air are not sufficiently mixed.

Korean Registered Patent No. 10-1126022 (Mar. 05, 2012)

In order to solve such a conventional problem, according to the present invention, it is possible to increase the contact between the fluid and the water jetted from the jetting unit without increasing the height, thereby smoothly inducing the growth of the droplet and sufficiently mixing the fluid with the high- The present invention provides an apparatus for removing white smoke of a double pipe structure.

In order to achieve the above object, according to the present invention, there is provided an apparatus for supplying a fluid, comprising: a supply part for supplying a fluid; a hollow chain body connected to the supply part and having a fluid flow path therein, And a jetting part for jetting; The main body is provided with a flow switching part for changing the flow direction of the fluid at least once in a vertical direction.

Wherein the flow switching portion includes a guide member extending vertically in a portion spaced inwardly from an inner wall surface of the main body and forming a fluid flow passage inwardly and outwardly of the main body portion and a guide member extending from an upper end of the guide member to an inner wall of the main body, And a blocking member for blocking an upper portion of the outer passage formed between the member and the main body; And the connecting portion between the supplying portion and the main body is located below the blocking member.

The injection unit may include a first injection module provided at a lower portion of the blocking member to the outside of the guide member, and a second injection module provided at an inner side of the guide member.

A first supply pipe for supplying water to the first injection module, a second supply pipe for supplying water to the second injection module, an air blower for blowing outside air, and a condenser provided at the bottom of the main body for storing condensed water And a water supply pipe for supplying the heat exchanged water to the first supply pipe and the second supply pipe in the heat exchanger in the heat exchanger .

Wherein the first supply pipe includes a main pipe extending along the periphery of the guide member and a branch pipe extending from the main pipe toward the inner wall of the main body, And an injection nozzle.

The second supply pipe is formed by branching a plurality of pipes radially toward the guide member, and the second injection module is formed of a plurality of injection nozzles provided in the branch pipe.

A dispersion unit disposed on the inner passage in the guide member to distribute the flowing fluid disposed at a lower portion of the second injection module and an adsorption unit arranged to be disposed above the second injection module to adsorb the grown droplets, do.

And an outer air supply pipe for supplying the outside air heat exchanged with water in the heat exchanger to the inside of the main body, wherein the circulation induction elongation protrusion extending from the inner wall surface of the main body in an inclined manner to form a rotational flow in the outside air supplied through the outside air supply pipe And is provided at an end of the additional outside air supply pipe.

The apparatus for removing white smoke of the double pipe structure according to the present invention is characterized in that the main body portion can secure a longer flow path under the same height condition and further increase the contact area between the fluid and the water to further promote the growth of the droplet, So that mixing of the outside air and the fluid can be smoothly performed, and the efficiency of removing white smoke can be improved.

FIG. 1 is a configuration diagram showing a conventional white smoke removing device,
2 shows an operation example of a conventional white smoke removing apparatus,
FIG. 3 is a view illustrating a double-tube structure whitening device according to an embodiment of the present invention,
4 is a sectional view taken along the line AA in Fig. 3,
5 is a cross-sectional view taken along the line BB in Fig. 3,
FIG. 6 is a cross-sectional view illustrating the inside of a main body of a double-tube whitener removing apparatus according to an embodiment of the present invention.

Hereinafter, the technical configuration of the double-tube structure of the white smoke removing device will be described in detail as follows.

3 is a cross-sectional view taken along line AA of FIG. 3, FIG. 5 is a cross-sectional view taken along line BB of FIG. 3, and FIG. FIG. 6 is a cross-sectional view illustrating the inside of a main body of a whitener removing apparatus according to an embodiment of the present invention.

3 to 6, a dual pipe structure detoxifying apparatus 300 according to an embodiment of the present invention includes a supply unit 112, a main body 301, a spraying unit, a flow switching unit, A second supply pipe 313, a blower 333, a storage unit H, a heat exchanger 331, a water supply pipe 310, an outside air supply pipe 320, (307) and a suction part (308).

The supply unit 112 is connected to a structure (for example, a chimney) through which a fluid including water vapor is discharged, and a fluid containing water vapor is supplied to the main body 301 to be described later. One side of the supply part 112 is connected to the structure through which the fluid is discharged, and the other side is connected to the main body 301.

The supply unit 112 may include a suction fan 114 for forcibly transferring the fluid to the main body 301. Fluids from structures such as chimneys are water-containing emissions from facilities such as incinerators, metal melting furnaces, wet desulfurization facilities, and steel mills.

One side of the supply part 112 is connected to the main body 301 and the fluid is supplied to the main body 301 through the supply part 112. A fluid flow passage is formed in the main body 301. The main body 301 of the present embodiment is a hollow body formed in a vertically long shape, and has a cylindrical shape with a circular section. The cross section of the main body 301 may have a shape other than a circular shape. In the upper part of the main body 301, there is formed a discharge part 301a through which the fluid is discharged to the atmosphere, and the discharge part 301a may have a circular shape or another shape.

The jetting portion is provided in the flow passage of the main body 301 to inject water into the fluid. The water jetted from the jetting section is in contact with the fluid, and the droplet contained in the fluid grows in size by condensation and gas-liquid contact. The injection part is configured to inject water in the downward direction, and the fluid flowing from the lower part to the upper part meets the water and flows while the size of the droplet grows.

The flow switching unit is provided in the main body 301 and changes the flow direction of the fluid at least once in the vertical direction. By changing the flow direction of the fluid in the up-and-down direction, the flow-switching unit can ensure a longer flow path under the same height condition of the main body, and can increase the contact between the fluid and water. Now, a more detailed configuration of the flow switching section will be described.

The flow switching unit includes a guide member 303 and a shutoff member 305 provided in the main body 301.

The guide member 303 is formed extending in the vertical direction at a position spaced inward from the wall surface of the main body 301. The lower end of the guide member 303 is upwardly spaced from the main body 301. A fluid flow path is formed between the inside of the guide member 303 and the guide member 303 and the main body 301. The guide member 303 has a vertically long cylindrical shape, and both the upper and lower portions are open. The guide member 303 is provided so as to be positioned at the radially inner central portion of the main body 301 so that the guide member 303 is formed with a double pipe structure together with the main body 301.

The blocking member 305 extends from the upper end of the guide member 303 to the inner wall surface of the main body 301 to block the upper end of the passage formed between the guide member 303 and the main body 301. The upper end of the blocking member 305 is located at a lower level than the discharging portion 301a which is the upper end of the main body 301 in the up-and-down direction. The blocking member 305 blocks the flow so that the fluid introduced through the supply part 112 can not be discharged directly to the discharge part 301a. The fluid that has flowed into the supply portion 112 flows downward through the outer passage formed between the guide member 303 and the main body 301 by being blocked by the blocking member 305 and is guided through the lower end opening of the guide member 303 Through the inner passage formed in the upper portion

The connection part between the supply part 112 and the main body 301 is positioned below the blocking member 305 and is positioned higher than the lower end of the guide member 303. The flow direction of the fluid is changed at least once in the up and down direction through the connecting position of the flow switching unit including the guide member 303 and the blocking member 305 and the supply unit, It is advantageous for the growth of droplets and the efficiency of removing white smoke is improved.

The jetting unit includes a first jetting module 312 provided below the blocking member 305 between the outside of the guide member 303 and the main body 301 and a second jetting module 312 provided inside the guide member 303 314).

The first injection module 312 is disposed in the outer passage formed between the guide member 303 and the main body 301 so as to be positioned below the blocking member 305. [ The first injection module 312 is preferably provided above the connection part between the supply part 112 and the main body 301. The fluid introduced through the supply part 112 is in a high temperature and high humidity state and has a property of flowing upward. The fluid introduced through the supply part 112 first comes into contact with the water jetted from the first injection module 312 and the size of the droplet grows.

The second injection module 314 is provided in the inner passage of the guide member 303. The second injection module 314 is disposed above the lower end opening of the guide member 303. The fluid having the droplet size first grown in contact with the water sprayed from the first injection module 312 moves downward and then moves upward along the inner passage of the guide member 303 and flows into the second injection module 314, And the size of the droplet is further increased.

The first supply pipe 311 is a passage through which water is supplied to the first injection module 312. The first supply pipe 311 includes a main pipe 311a extending along the outer periphery of the guide member 303 and a branch pipe 311b extending from the main pipe 311a toward the inner wall of the main body 301 do. The first injection module 312 is composed of a plurality of injection nozzles provided in the branch pipe 311b. The main pipe 311a extends substantially annularly from the first supply pipe 311 and the branch pipe 311b extends radially from the main pipe 311a. A plurality of injection nozzles are arranged in branch tubes 311b to inject water into the outer passage of the guide member 303 in the main body inner passage.

The second supply pipe 313 is a passage through which water is supplied to the second injection module 314. The second supply pipe 313 is provided with a plurality of pipes branched radially toward the inside of the guide member 303. The second injection module 314 is composed of a plurality of injection nozzles provided in the branched pipe. The second supply pipe 313 extends substantially annularly along the inner circumference of the guide member 303 and is formed radially connected at the annular extension. A plurality of spray nozzles are provided in radially extending tube portions to spray water into the inner passages of the guide members 303 in the main body inner passages.

The blower 333 blows the air outside through the heat exchanger 331, which will be described later, through the outside air supply pipe 320 to the upper portion of the main body 301. The storage section H is provided in the lower portion of the main body 301 and is a space in which condensed condensed water is stored. The water contained in the storage section H is in a high temperature state, and the fluid flows in the main body 301, and the grown droplet falls and is accommodated.

Water stored in the storage section H flows through a water supply pipe 310 through a heat exchanger 331 through a pump (not shown). The pump is provided on the water supply pipe.

The heat exchanger 331 exchanges the condensed water of the storage section H with the outside air blown from the blower 333. The heat exchanger 331 is configured to exchange heat between the outside air blown out from the blower and the water stored in the receiving part and flowed by the pump. The hot water supplied from the storage part H is heat-exchanged with the relatively low- And the outside air is heated by water. Since the structure of the heat exchanger 331 is generally known, a detailed description thereof will be omitted.

The water supply pipe 310 is connected to the first supply pipe 311 and the second supply pipe 313 through the heat exchanger 331 so that the water heat exchanged with the outside air flows through the water supply pipe 310, And is supplied to the second supply pipe 313. The outside air supply pipe 320 is connected to the blower 333 and the other side is connected to the main body 301 through the heat exchanger 331. It is preferable that the outside air supply pipe 320 is disposed on the upper side of the main body 301, that is, on the upper side than the blocking member 305. The fluid which has passed through the second injection nozzle 314 and is moved to the upper side of the main body 301 is in a high temperature state and this high temperature fluid becomes a relatively low temperature fluid while being mixed with the high temperature outside air.

At the end of the outside air supply pipe 320, a turn inducing extension part 320a is provided. The turn inducing extension 320a protrudes from the inner wall of the main body 301 in a radial direction and is extended and extended in a circumferential direction. The outside air supplied through the outside air supply pipe 320 is guided by the swing guide extension part 320a to form a circular rotating flow like a whirlpool in the internal space of the main body 301. [ The rotational flow of the outside air promotes mixing with the fluid and stays in the main body 301 for a longer time to improve the efficiency of removing white smoke.

The dispersion portion 307 is disposed on the internal flow passage of the main body 301 so that the flowing fluid is uniformly dispersed and flows. The dispersion unit 307 is provided on the inner passage of the guide member 303 and is disposed below the second injection module 314. The dispersion 307 causes the upwardly flowing fluid to flow more uniformly upwardly. The dispersion unit 307 may be formed in the form of a plate, and a plurality of through holes may be formed.

The adsorption unit 308 (Demister) is disposed on the downstream side of the dispersion unit 307 in the flow direction of the fluid to adsorb the grown droplets. The adsorption portion 308 is provided on the inner passage of the guide member 303 and disposed on the upper portion of the second injection module 314. [ The adsorption unit 308 may be formed of a porous filter and may be formed in a zigzag fashion to increase the contact area with the flowing fluid.

An operation example of the white smoke removing apparatus 300 will be described.

The fluid containing water vapor introduced into the supply portion 112 by the suction fan 114 flows into the outer passage formed between the guide member 303 and the main body 301 and has a property of flowing upward due to the high temperature. The fluid injected from the first injection module 312 causes the droplet to grow in size and flow downward along the outer passage of the guide member 303.

Thereafter, the fluid flows upward along the inner passage of the guide member 303, and uniformly flows upward through the dispersion portion 307. The upwardly flowing fluid is further expanded in size by the water jetted from the second injection module 314 and passes through the adsorption section 308. [ The liquid droplets grown in this process are adsorbed on the adsorption part 308, fall down in the form of condensed water, and stored in the storage part H.

The water in the storage section H is circulated to the heat exchanger 331 side by the pump and the outside air is sucked to the heat exchanger 331 side through the blower 333 so that the hot water is cooled and the low temperature outside air is heated. The heated outside air is supplied to the upper portion of the main body 301 along the outside air supply pipe 320. The cooled water is injected into the first injection module 312 and the second injection module 314 through the first supply pipe 311 and the second supply pipe 313 along the water supply pipe 310, respectively.

On the other hand, the low-temperature fluid that has passed through the adsorption unit 308 contacts the high-temperature outside air supplied through the outside-air supply pipe 320, and the temperature rises and is discharged to the atmosphere. Therefore, since the relative humidity is lowered, the white smoke phenomenon is reduced.

Although the apparatus for removing white smoke according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various changes and equivalent embodiments may be made by those skilled in the art. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

300: Double tube structure of white smoke removing device
112: supply part 114: suction fan
301: main body 303: guide member
305: blocking member 307:
308: suction part 310: water supply pipe
311: first supply pipe 312: first injection module
313: second supply pipe 314: second injection module
320: outside air supply pipe 331: heat exchanger
333: blower H: storage unit

Claims

And a flow switching unit connected to the supply unit 112 to receive a fluid and to form a fluid flow path therein to change the flow direction of the fluid at least once in the vertical direction And a jetting portion provided in the flow passage of the main body 301 to jet water to the fluid;
The flow switching unit includes a guide member 303 extending in a vertical direction at a portion spaced inwardly from the inner wall surface and forming a fluid flow path inward and outward of the guide member 303, And a blocking member 305 extending to the inner wall surface of the guide member 303 to block the upper portion of the outer passage formed between the guide member 303 and the main body 301; The connecting portion between the supplying portion 112 and the main body 301 is located below the blocking member 305;
The injection unit includes a first injection module 312 provided at the lower part of the blocking member 305 to the outside of the guide member 303 and a second injection module 314 provided at the inner side of the guide member 303 ;
A first supply pipe 311 for supplying water to the first injection module 312, a second supply pipe 313 for supplying water to the second injection module 314, a blower 333 for blowing outside air, A heat exchanger 331 for exchanging the condensed water of the storage unit H with the outside air blown from the blower 333, And a water supply pipe (310) for supplying water heat exchanged with the outside air in the heat exchanger (331) to the first supply pipe (311) and the second supply pipe (313);
And an outside air supply pipe 320 for supplying outside air heat exchanged with water in the heat exchanger 331 to the inside of the main body 301. The outside air supply pipe 320, which is formed to extend obliquely from the inner wall of the main body 301, Wherein a swirling induction extension part (320a) for forming a rotating flow in the outside air supplied through the outside air supply pipe (320) is provided at an end of the outside air supply pipe (320).

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2. The apparatus according to claim 1, wherein the first supply pipe (311) comprises a main pipe (311a) extending along the periphery of the guide member (303) Wherein the first branching module (312) comprises a branch tube (311b) formed in the branch tube (311b), and the first injection module (312) comprises a plurality of injection nozzles provided in the branch tube (311b).

The apparatus according to claim 1, wherein the second supply pipe (313) is formed by branching a plurality of pipes radially toward the guide member, and the second injection module (314) is formed by a plurality of injection nozzles Wherein the flue gas desulfurization apparatus has a double pipe structure.

The apparatus according to claim 1, further comprising: a dispersion part (307) disposed below the second injection module (314) on the inner passage in the guide member (303) And a suction unit (308) disposed on the upper side for absorbing the grown liquid droplets.

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