KR102255280B1 - Plume abatement cooling tower - Google Patents

Abstract

According to the present invention, a white smoke reduction cooling tower comprises: a body member provided in multiple layers and having a water storage tank at the other end so that hot water heated at one end is supplied through a water inlet and cooled coolant is stored; a wet heat exchange member provided for each floor so that the hot water introduced through the water inlet passes through a wheeler part installed on a side surface of the body member to exchange heat; a dry heat exchange member for generating dry air by allowing hot coolant to pass through while not directly contacting the coolant; and a gas mixing part for reducing white smoke by mixing the wet air that has passed through the wet heat exchange member and the dry air generated by the dry heat exchange member. According to the present invention, it is applied to both the cross flow type and the counter flow type, and it is possible to reduce white smoke by moving the dry heat exchange member in the direction of a gas mixing section in winter, and in seasons other than winter, the dry heat exchange member is moved in the opposite direction to the gas mixing section to increase the cooling performance of the coolant due to the formation of convection, thereby reducing white smoke in the winter and providing cooling water at an appropriate temperature in the summer.

Description

White smoke reduction cooling tower {PLUME ABATEMENT COOLING TOWER}

The present invention relates to a white smoke reduction cooling tower, and more particularly, to a cooling tower for reducing white smoke by mixing dry air and humid air.

In general, incinerators, metal melting furnaces, wet desulfurization facilities, and other equipment industries that discharge air pollutants include air conditioning facilities for treating exhaust air generated during operation of the facilities. Moreover, in a semiconductor and flat panel display manufacturing plant (Fab: Fabrication), a plurality of large-capacity cooling towers are installed to treat exhaust air generated during operation of the plant.

Here, the cooling tower is a device that cools high-temperature cooling water by contacting it with outside air. In a horizontal cooling tower, cooling water is distributed in the direction of gravity and/or horizontally, and air flows in the horizontal direction.

On the other hand, when the exhaust air discharged from the cooling tower comes into contact with the low-temperature atmosphere, it may become a fine droplet and appear as white smoke. That is, white smoke may occur in the cooling tower. The white smoke phenomenon occurs intensively in winter when the air temperature is low, and rarely occurs in summer when the air temperature is high.

A technology related to a cooling tower for reducing the white smoke phenomenon has been proposed in Korean Patent No. 1839457.

However, Patent Document 1 requires a white smoke reduction function first in winter when white smoke is generated, and due to seasonal factors, an appropriate level of cooling water temperature can be obtained without treatment with a cooler, so a gas mixing unit for reducing white smoke is complicatedly installed inside the cooling tower. It may not be a big problem, but in the summer when there is little white smoke generation, cooling water cooling function, which is a function of the cooling tower, is required. Convection, etc.) is obstructed, making it difficult to obtain cooling water at an appropriate temperature.

Korean Patent Registration No. 1839457 (2018.03.12)

The present invention has been conceived to solve the above problems, and in winter when white smoke is severely generated, the dry heat exchange member is moved in the direction of the gas mixing unit to efficiently reduce white smoke, and in the season except winter (for example, summer), dry An object thereof is to provide a white smoke reduction cooling tower in which a heat exchange member is moved in a direction opposite to the gas mixing part to smooth the flow of air in the cooling tower, thereby supplying cooling water of an appropriate temperature.

The white smoke reduction cooling tower according to the present invention for achieving the above object includes: a main body member provided in multiple layers and having a storage tank at the other end so that hot water heated at one end is supplied through a water inlet and the cooled coolant is stored; A wet heat exchange member provided for each layer for heat exchange by passing the hot water introduced through the water inlet through the wheeler part installed on the side surface of the main body member; A dry heat exchange member for generating dry air by allowing high temperature coolant to pass while not in direct contact with the coolant; And a gas mixing unit for reducing white smoke by mixing wet air passing through the wet heat exchange member with dry air generated by the dry heat exchange member, wherein the dry heat exchange member is directed toward the gas mixing unit to reduce white smoke during winter. It can be moved and moved in a direction opposite to the gas mixing unit in order to improve the cooling performance of the cooling water in seasons other than the winter season.

The dry heat exchange member may be moved from the outside of the wet heat exchange member or from the upper side of the wet heat exchange member.

The dry heat exchange member includes: a fixed pipe connected to a communication pipe branched connected to the water inlet; A moving pipe protruding from the end of the fixed pipe; And a coil part connected to an end of the moving pipe to generate dry air using hot water introduced through the fixed pipe.

The coil unit may be disposed in a single layer or in multiple layers under the coil unit, while having a set interval and a white smoke absorption unit capable of fixing or adjusting an opening angle.

It may include a damper for external air inflow installed on the side wall of the body member to prevent or prevent external air from entering or preventing the inside of the body member according to seasonal changes.

The moving pipe may be provided with opening and closing portions to open and close opposite side walls of the wheeler portion.

The dry heat exchange member may further include a control unit to control part or all of the position of the coil unit according to the degree of white smoke generation.

It may further include a transfer device for manually or automatically controlling the position of the coil unit under the control of the control unit.

According to the present invention, it is applied to both the cross flow type and the counter flow type, and it is possible to reduce white smoke by moving the dry heat exchange member in the direction of the gas mixing part in winter, and the dry heat exchange member moving in the opposite direction of the gas mixing part in the winter season. Thus, by increasing the cooling performance of the cooling water due to the formation of convection, there is an effect of reducing white smoke in winter and providing cooling water with an appropriate temperature in summer.

1 is a front view showing an operating state in a winter season while a white smoke reduction cooling tower according to a first embodiment of the present invention is a cross-flow type.
2 is a plan view showing an operating state in a winter season while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type.
3 is a perspective view showing an operating state of one and the other side dry heat exchange member and wet heat exchange member in winter when the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type and in winter.
4 is a front view showing an operating state in a summer season while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type.
5 is a plan view showing an operating state in a summer season while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type.
6 is a perspective view showing an operating state of one and the other side dry heat exchange member and wet heat exchange member in the summer season while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type.
7 is a cross-sectional view showing a state in which the white smoke reduction cooling tower according to the first embodiment of the present invention is of a cross-flow type and a white smoke adsorption part is disposed under the coil part of the dry heat exchange member.
FIG. 8 is a front view showing the structure of a counterflow type of a white smoke reduction cooling tower according to a second embodiment of the present invention.

The above objects, features, and other advantages of the present invention will become more apparent by describing in detail a preferred embodiment of the present invention with reference to the accompanying drawings. Hereinafter, with reference to the accompanying drawings will be described in detail for the white smoke reduction cooling tower according to an embodiment of the present invention.

1 is a front view showing an operation state in winter while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross flow type and FIG. 2 is a cross flow type while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross flow type. FIG. 3 is a plan view showing an operating state in winter, and FIG. 3 is a perspective view showing the operating states of one and the other side dry heat exchange members and wet heat exchange members in winter while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type. , FIG. 4 is a front view showing an operation state in the summer when the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross flow type and FIG. 5 is a cross flow type of the white smoke reduction cooling tower according to the first embodiment of the present invention. It is a plan view showing an operating state in the summer season, and FIG. 6 is a perspective view showing the operating state of one and the other side dry heat exchange members and wet heat exchange members in the summer season while the white smoke reduction cooling tower according to the first embodiment of the present invention is a cross-flow type. 7 is a cross-sectional view showing a state in which the white smoke reduction cooling tower according to the first embodiment of the present invention is of a cross flow type and a white smoke adsorption part is disposed under the coil part of the dry heat exchange member, and FIG. 8 is a second embodiment of the present invention. It is a front view showing the structure when the white smoke reduction cooling tower according to the embodiment is a counter flow type.

1 to 6, the white smoke reduction cooling tower 100 according to the first embodiment of the present invention includes a body member 110, a wet heat exchange member 120, a dry heat exchange member 130 and a control unit, , It is orthogonal among cross-flow type and counter-flow type.

At this time, cross flow refers to a method in which cooling water is supplied in a vertical downward direction and air is introduced in a horizontal direction, and in a counter flow type, cooling water is supplied in a vertical downward direction, and the side surface is opposite to this direction. It refers to a method of forcibly exhausting from the top of the cooling tower after inhaling the outside air from and cooling it with outside air.

The main body member 110 is provided with a wet heat exchange member 120 and a dry heat exchange member 130 in multiple layers on both sides (or one side) of the interior, and cold air is supplied to each side wall of the wet heat exchange member 120 and the dry heat exchange member. External air inlet (110a) flowing in the direction of (130) is formed, respectively, a fan 111 for discharging hot air is provided at the top, and a wet heat exchange member 120 and a dry heat exchange member on the upper side of the fan 111 A water inlet unit 113 for supplying water to be heat-exchanged from 130 is provided, and a storage tank 112 containing water falling through the wet heat exchange member 120 and the dry heat exchange member 130 is provided at the bottom. . And the cooling water outlet (112a) is connected to the storage tank (112).

Meanwhile, the wet heat exchange member 120 and the dry heat exchange member 130 are illustrated as being arranged in three layers, and the number of layers is not limited thereto and can be increased or decreased, and the dry heat exchange member 130 is the upper side of the fan 111 Can also be installed in,

Moreover, by mixing the wet air (A1) made from the wet heat exchange member (120) and the dry air (B1) made from the dry heat exchange member (130) on the lower side of the fan (111) of the main body member (110) to reduce white smoke. A gas mixing part 111a is formed to function as a reduction device.

And the water inlet 113 is connected to the fixed pipe 131 of the dry heat exchange member 130 through the first communication pipe 114 in the vertical direction that is selectively opened and closed, and the second communication pipe 115 in the vertical direction that is always open It is located above the wheeler portion 121 of the uppermost wet heat exchange member 120 through.

On the other hand, in the first communication pipe 114, an on-off valve 114a is installed in the upper portion and a drain valve 114b is installed in the lower portion, so that when the wet heat exchange member 120 is used, the on-off valve 114a is opened while the drain valve 114b is opened. ) Is closed, the opening/closing valve 114a is closed when the wet heat exchange member 120 is not in use, and the drain valve 114b is opened when draining.

The external air inlet 110a includes a damper part 116 for inflow of external air so that external air is introduced or blocked into the main body member 110 according to seasonal changes.

That is, the external air inflow damper unit 116 is installed to prevent or prevent external air from flowing into the cooling tower 100 according to seasonal changes such as winter or summer.

Accordingly, in winter, the external air inflow damper part 116 is closed, and in the summer season, the external air inflow damper part 116 is opened.

The wet heat exchange member 120 is provided for each layer so that the hot water introduced through the second communication pipe 115 of the water inlet 113 passes through the wheeler unit 121 installed on the side of the body member 110 to heat exchange. .

That is, the wet heat exchange member 120 refers to a wet air heat exchange unit in which hot water passing through the wheeler unit 121 for cooling flows into the discharge port side by the action of the fan 111.

Here, the wet heat exchange member 120 is not shown in the drawing, but the air is horizontally connected to the filler and the eliminator through a louver installed from the lower side to the upper side of the body member 110. It moves and moves toward the fan 111 and is discharged outward. At this time, water is distributed through the water inlet 113, flows from the top of the filler, passes through the filler, falls into the storage tank 112, and is recycled.

Accordingly, the wet heat exchange member 120 performs heat exchange by cold air in which water vertically moved between the fillers crosses at a right angle.

Moreover, the wet heat exchange member 120 has a space (S) cut through both sides of the upper layer of the wheeler unit 121 so that the dry heat exchange member 130 passes, and the dry heat exchange member 130 is provided with a gas mixing unit 111a. ) By installing a transfer rail (not shown in the drawing) in the cut space (S) so that the dry heat exchange member 130 can freely enter and exit this space.

And the cut space (S) is installed so as not to be disturbed by the cooling water flowing into the wheeler unit 121 flows to the storage tank 112 provided at the lower end through the wheeler unit 121 installed for each floor, and the cut space ( As S), the opening and closing portions 122 are installed parallel to opposite side walls of the cut space (S) to prevent external air or moisture from invading.

At this time, the opening/closing part 122 is spaced apart from the moving pipe 132 of the dry heat exchange member 130 to open or close the cut space S according to the movement of the moving pipe 132.

Further, a plurality of nozzles N are installed on the upper side of the wheeler unit 121 so that water falling through the second communication pipe 115 is uniformly supplied to an area corresponding to the width of the wheeler unit 121.

The dry heat exchange member 130 produces dry air (B1) by allowing the high temperature coolant to pass while making the end of the heat exchanger substantially in the form of a coil so that it does not come into direct contact with the hot coolant, and the wet heat exchange member 120 While moving from the outside of the gas mixture part 111a to reduce white smoke during winter, and in the season except winter season, it moves in the direction opposite to the gas mixing part 111a to form convection.

Here, the dry heat exchange member 130 includes a first communication pipe 114 branched connected to the water inlet 113 and a fixed pipe 131 branched connected, and a moving pipe 132 protruding from the end of the fixed pipe 131 and a moving pipe ( It includes a coil unit 133 connected to the end of the 132 to generate dry air (B1) by using the hot water introduced through the fixing pipe 131.

The moving pipe 132 is provided with an end portion protruding and protruding from the inside of the fixed pipe 131, and an airtight holding portion of an annular shape between the outer circumferential surface and the inner circumferential surface of the fixed pipe 131 to maintain airtightness of the connection portion with the fixed pipe 131 (Not shown in the drawings) is provided.

In this way, since the airtightness of the connection portion between the moving pipe 132 and the fixed pipe 131 is maintained through the airtight portion, the pressure can be maintained only by the water pressure, and the moving pipe 132 has a gasket (not shown in the drawing) installed at the end. As the end of the gasket is pushed by water pressure, it becomes waterproof.

And the discharge pipe (133a) is formed at the end of the coil unit 133, and is located inside the wheeler unit 121 in winter, and after heat exchange, the internal water drops to the lower wheeler unit 121 of the wet heat exchange member 200. , In the summer, it is exemplified that it is located outside the wheeler unit 121 and falls into the water storage tank 112, but is not limited thereto, and it is possible to directly fall into the water storage tank 112 in both winter and summer seasons.

Referring to FIG. 7, a plurality of "V"-shaped white smoke absorbing parts 134 made of a material such as metal to have a set gap are disposed in the transverse direction to have gaps under the coil part 133 (FIG. 7 (a)). In this way, when the air with white smoke rises, it condenses and adheres to the surface (bottom) of the white smoke adsorption unit 134, and after the white smoke is adsorbed, it is discharged through the gap and passes through the coil unit 133.

In this case, the white smoke adsorption part 134 is illustrated as being provided in a single layer, but the present invention is not limited thereto and may be provided in multiple layers.

Moreover, in addition to the function of adsorbing white smoke, the white smoke adsorption unit 134 affects the speed when the fan 111 rotates from above, so that the dry air passing through the dry heat exchange member 130 and the humid air passing through the wet heat exchange member 120 Can be mixed.

And the white smoke adsorption unit 134 is possible to adjust the angle by a manual or automatic method (see Fig. 7 (b)).

Moreover, the dry heat exchange member 130 transfers the dry heat exchange member 130 to the center of the gas mixing part 111a to reduce white smoke, or provides smooth convection formation of the gas mixing part 111a to increase cooling water cooling performance. For this purpose, a transfer device (not shown in the drawing) for transferring the dry heat exchange member 130 to the opposite side of the gas mixing unit 111a is provided.

At this time, the transfer device is movable through a transfer rail installed on the upper side of the wheeler unit 121 of the wet heat exchange member 120, and is controlled manually by a handle or the like or automatically by a driving force of a motor. On the other hand, when the transfer device is automatically controlled, the driving force is transmitted by any one method selected from a gear method, a chain method, and a belt method.

Although not shown in the drawing, the control unit controls the driving of the transfer device to partially or completely control the position of the coil unit 133 of the dry heat exchange member 130 according to the degree of white smoke generation due to various environmental factors such as temperature and humidity, It is possible to control a part or all of the coil unit 133 to be partially drawn out.

In this way, the white smoke reduction cooling tower 100 according to the first embodiment of the present invention reduces white smoke by transferring the dry heat exchange member 130 to the center of the gas mixing unit 111a under the control of the control unit in the winter season when white smoke is extremely generated. It is possible.

That is, when the generation of white smoke is extreme, the coil unit 133 is drawn out from the fixed tube 131 through the transfer rail installed above the wheeler unit 121 of the wet heat exchange member 120 while the transfer device is driven under the control of the control unit. It will be moved by (132).

At this time, the water inlet 113 and the first communication pipe 114 are in a state in which the on-off valve 114a is open, and the damper part 116 for inflow of external air is in a closed state.

In addition, the control unit may partially or completely control the position of the coil unit 133 of the dry heat exchange member 130 through driving control of the transfer device according to the degree of white smoke generation due to various environmental factors such as temperature and humidity.

Next, the hot water introduced through the water inlet 113 and the normally open second communication pipe 115 passes through the wheeler unit 121 for cooling, and flows into the discharge port by the action of the fan 111. A1) is formed.

Next, as the coil part 133 is transferred to the center of the gas mixing part 111a, the opening/closing part 122 that has closed the cut space S of the wheeler part 121 is opened.

Next, as the opening/closing valve 114a is opened, the water in the water inlet 113 moves to the fixed pipe 131, the moving pipe 132 and the coil part 133 through the first communication pipe 114, and the coil part ( In 133), hot water is used to generate dry air (B1).

Next, the wet air (A1) made by the wet heat exchange member (120) and the dry air (B1) made by the dry heat exchange member (130) are mixed in the gas mixing unit (111a) to reduce white smoke.

At this time, white smoke is adsorbed from the air containing white smoke through the white smoke adsorption unit 134 disposed under the coil unit 133.

In addition, the white smoke reduction cooling tower 100 of the present invention facilitates the flow of air by transferring the dry heat exchange member 130 in the opposite direction of the gas mixing unit 111a under the control of the control unit in seasons excluding the winter season.

That is, while the transfer device is driven under the control of the control unit, the coil unit 133 through the transfer rail installed on the upper side of the wheeler unit 121 of the wet heat exchange member 120 is driven by the moving pipe 132 that is drawn in from the fixed pipe 131. Will move.

At this time, the water inlet 113 and the first communication pipe 114 are in a state in which the on-off valve 114a is closed.

Next, the hot water introduced through the water inlet 113 and the normally open second communication pipe 115 passes through the wheeler unit 121 for cooling, and flows into the discharge port by the action of the fan 111, while the wet air ( A1) is formed.

Next, as the coil part 133 is transferred to the side opposite to the gas mixing part 111a, the opening/closing part 122 that has opened the cut space S of the wheeler part 121 is closed.

Referring to FIG. 8, the white smoke reduction cooling tower 200 according to the second embodiment of the present invention includes a body member 210, a wet heat exchange member 220, a dry heat exchange member 230 and a control unit, and a cross flow type And a counter-flow type among counter-flow types.

At this time, in the white smoke reduction cooling tower 200 according to the second embodiment of the present invention, the wet heat exchange member 220 is located under the dry heat exchange member 230 while the wet heat exchange member 220 and the dry heat exchange member 230 The difference is that a plurality of nozzles 2142 are disposed under the third communication pipe 214a disposed in parallel with the water inlet 213 between them.

And it has been illustrated that the wet heat exchange member 220 and the dry heat exchange member 230 are each formed by one layer, and the number can be varied.

Moreover, it is disposed in the transverse direction of the third communication pipe 214a whose one end is blocked at the lower portion of the first communication pipe 214 branched in the direction perpendicular to the water inlet 213, and the water inlet 213 and the third The fixed pipe 231 of the dry heat exchange member 230 is connected and communicated between the communication pipes 214a.

In addition, the main body member 210 has a fan 211 installed in the upper center thereof, and a damper part 216 for external air inflow as in the first embodiment is installed in the external air inlet 210a formed on the side wall.

In addition, the main body member 201 has an inner external air inlet 210a' open under the partition wall while the partition walls facing both sides of the main body member 201 are formed, and the dry heat exchange member 230 moves through the opening formed in the upper portion of the partition wall.

In addition, a storage tank 212 with a cooling water outlet 212a is provided under the inner external air inlet 210a'.

Since the dry heat exchange member 230 has the same structure and function as that of the previous embodiment, a detailed description will be omitted, and the fixed pipe 231, the moving pipe 232, and the coil unit 233 while appearing and disengaging by a transfer rail (not shown in the drawing) ).

Therefore, the white smoke reduction cooling tower 200 according to the second embodiment of the present invention has the dry heat exchange member 230 in the center of the gas mixing unit 211a under the control of the controller in the winter season in which the generation of white smoke is severe, as in the first embodiment. It is possible to reduce white smoke by transferring it to the side, and in the season except the winter season, the dry heat exchange member 230 is transferred in the opposite direction of the gas mixing unit 211a under the control of the control unit to facilitate the flow of air.

Embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to understand. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

100, 200: white smoke reduction cooling tower 110, 210: main body member
111, 211: fan 111a, 211a: gas mixing unit
112, 212: reservoir 113, 213: water inlet
114, 214: first communication pipe 115: second communication pipe
116, 216: damper part for inflow of external air 120, 220: wet heat exchange member
121, 221: wheeler unit 130, 230: dry heat exchange member
131, 231: fixed pipe 132, 232: moving pipe
133, 233: coil part 134, 234: white smoke adsorption part

Claims (8)

A main body member provided in multiple layers and having a storage tank at the other end so that hot water is supplied to one end through the water inlet and the cooled coolant is stored;
A wet heat exchange member provided for each layer for heat exchange by passing the hot water introduced through the water inlet through the wheeler part installed on the side surface of the main body member;
A dry heat exchange member for generating dry air by allowing high temperature coolant to pass while not in direct contact with the coolant; And
Including; a gas mixing unit for reducing white smoke by mixing the wet air passed through the wet heat exchange member and dry air generated by the dry heat exchange member,
The dry heat exchange member moves in the direction of the gas mixing part to reduce white smoke during winter, and moves in the direction opposite to the gas mixing part to improve the cooling performance of cooling water in seasons excluding winter,
The dry heat exchange member
A fixed pipe connected to a communication pipe branched from the water inlet;
A moving pipe protruding from the end of the fixed pipe; And
And a coil unit connected to an end of the moving pipe to generate dry air using hot water introduced through the fixed pipe.
The method of claim 1,
The dry heat exchange member is a white smoke reduction cooling tower, characterized in that it moves from the outside of the wet heat exchange member or moves above the wet heat exchange member.
delete The method of claim 1,
The white smoke reduction cooling tower, characterized in that the white smoke adsorption part is arranged in a single layer or multi-layered under the coil unit, while having a set interval and the opening angle is fixed or adjustable.
The method of claim 1,
And a damper part for inflow of external air installed on the side wall of the body member so as to prevent or prevent external air from flowing into the body member according to a seasonal change.
The method of claim 1,
The movable pipe is a white smoke reduction cooling tower, characterized in that the opening and closing portions are provided to open and close opposite side walls of the wheeler portion.
The method of claim 1,
The dry heat exchange member further comprises a control unit to control part or all of the position of the coil unit according to the degree of white smoke generation.
The method of claim 7,
The white smoke reduction cooling tower, characterized in that it further comprises a transfer device for manually or automatically controlling the position of the coil unit under the control of the control unit.

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