Patent Application
20240410653
The present invention relates to a white smoke removal apparatus having enhanced condensation efficiency and white smoke reduction rate and a white smoke removal method using the same, more specifically to a white smoke removal apparatus having enhanced condensation efficiency and white smoke reduction rate and a white smoke removal method using the same that are capable of mixing heat-exchanged exhaust air that moves along a condensation filter with outside air, while the outside air is being introduced directly into demisters, thereby reducing the entire size of the condensation filter, removing a large number of white smoke particles, and producing a large amount of condensate water, and capable of allowing the moving air to be condensed once again through an eliminator to minimize an amount of water contained in the air moving to a mixer, thereby enhancing white smoke removal efficiency.
Typically, white smoke represents small water droplets that are produced when high-temperature and high-humidity vapor generated in an industrial process meets outside air having a relatively low temperature and is then condensed, and in this case, the small water droplets scatter light and thus appear like white smoke. To reduce or remove the white smoke, heat exchanging or filtering is adopted.
If the heat exchanging or filtering is used solely, however, a white smoke removal rate is not high, so that in the exhaust gas emitted finally, fine dust, environmental harmful substances, and the like are contained, thereby making it hard to remove visual pollution elements.
In conventional practices, that is, heating is a method where an auxiliary heat source located on an outlet of a chimney is used to reheat and emit exhaust gas, but since additional energy cost is needed, the heating method has disappeared in the industrial field. Cooling condensation is a method where water in exhaust air is condensed and removed through a heat exchanger, but since the facility has a large size, economic efficiency is low in spite of a high investment cost. Simple mixing and cooling is a method where outside air simply mixes with exhaust air and is cooled to allow the water in the exhaust air to be condensed and removed, but since relative humidity of the exhaust air finally emitted is 100%, additional condensation occurs when the exhaust air meets the outside air having a lower temperature than the emitted air, thereby generating white smoke. The simple mixing and cooling method achieves the white smoke reduction, but it fails to remove the white smoke. Further, the conditions of the exhaust air finally emitted are greatly influenced directly according to the conditions of the outside air, and if atmospheric humidity is high due to rain, there are many limitations in humidity reduction.
First, one of conventional technologies, which is disclosed in Korean Patent No. 10-2139900, will be explained below.
The conventional technology relates to a white smoke removal apparatus including: a heat exchanger having a space portion formed therein and consisting of an exhaust air inlet formed on one side of the outer surface thereof to introduce exhaust air, a first outside air inlet formed on the other side with respect to one side where the exhaust air inlet is formed to introduce outside air, a waste heat outlet formed on the other side with respect to one side where the exhaust air inlet and the first outside air inlet are formed to exhaust waste heat, an outside air outlet spaced apart from the waste water outlet to exhaust heat-exchanged outside air to a mixer, and a moving path connected to a connection portion of a condensation filter to move heat-exchanged exhaust air; the condensation filter having a space portion formed therein and consisting of the connection portion formed on one side of the outer surface thereof in such a way as to be connected to the moving path, a filter spaced apart from the connection portion behind the connection portion to remove fine dust contained in the heat-exchanged exhaust air, demisters spaced apart from the filter behind the filter to remove white smoke particles contained in the heat-exchanged exhaust air introduced from the moving path, second outside air inlets formed on one side of the lower portion thereof to introduce the outside air so that the outside air meets the heat-exchanged exhaust air and cools the heat-exchanged exhaust air, and a cooling space portion formed in the space portion to allow the heat-exchanged exhaust air between the filter and the demisters and the introduced outside air to meet each other so that the heat-exchanged exhaust air is cooled; and the mixer located spaced apart from the condensation filter to introduce the heat-exchanged outside air from the heat exchanger and the white smoke-removed exhaust air from the condensation filter, mix the heat-exchanged outside air and the exhaust air, and exhaust the mixed air in a state where the mixed air is raised in temperature and lowered in humidity.
According to the conventional technology, that is, after primary heat exchange between the exhaust air and the outside air is performed, the heat-exchanged exhaust air moves to the condensation filter, and next, the heat-exchanged exhaust air is mixed with the outside air once again, thereby producing the condensate water. After that, the exhaust air from which water is removed moves to the mixer, and in this case, the heat-exchanged outside air and the exhaust air from which water is removed mix with each other again in the mixer and are then emitted to the outside, thereby achieving white smoke removal.
To allow the outside air to be introduced into the condensation filter, inlets are formed on the front sides of the respective demisters to introduce the outside air thereinto, so that the heat-exchanged exhaust air meets the outside air introduced into the demisters and mixes therewith, but under such a configuration, a large number of demisters are located to cause the condensation filter to be bulky in size. Further, the heat-exchanged exhaust air and the outside air mix together in the air, so that the demisters fail to form solid contact surfaces for the mixed air, thereby lowering condensation efficiency.
Accordingly, it is an object of the present invention to provide a white smoke removal apparatus having enhanced condensation efficiency and white smoke reduction rate and a white smoke removal method using the same that are capable of allowing demisters of a condensation filter to be arranged close to each other to reduce the entire size of the condensation filter, thereby minimizing limitations in installation positions thereof, capable of allowing outside air to be introduced directly into the demisters of the condensation filter so that when condensation occurs, solid contact surfaces are formed to produce a larger amount of condensate water than an amount of condensate water mixed, condensed and produced in the air in the conventional practices, and capable of having an eliminator located behind the demisters in the condensation filter to allow the condensate water to be produced once again before moving to a mixer, thereby optimizing white smoke removal efficiency.
To accomplish the above-mentioned objects, according to one aspect of the present invention, there is provided a white smoke removal apparatus having enhanced condensation efficiency and white smoke reduction rate, including: a heat exchanger 100 having an exhaust air inlet 120 into which exhaust air b is introduced, a first outside air inlet 130 into which outside air w is introduced, the exhaust air inlet 120 and the first outside air inlet 130 being spaced apart from each other on the outside thereof, a waste heat outlet 140 from which waste heat is exhausted, an outside air outlet 150 from which heat-exchanged outside air w1 is exhausted, and a moving path 160 for moving heat-exchanged exhaust air b1; a condensation filter 200 having a space portion formed therein and consisting of a connection portion 210 connected to the moving path 160, a filter 220 for removing fine dust contained in the heat-exchanged exhaust air b1, and two or more demisters 230 for removing white smoke particles and producing condensate water, the connection portion 210, the filter 220, and the demisters 230 being arranged sequentially, and second outside air inlets 240 formed on one side of the lower portion thereof to introduce the outside air w; and a mixer 300 located spaced apart from the condensation filter 200 to introduce the heat-exchanged outside air w1 from the heat exchanger 100 and white smoke-removed exhaust air b2 from the condensation filter 200, mix the heat-exchanged outside air w1 and the white smoke-removed exhaust air b2, and emit the mixed air in a state where the mixed air is raised in temperature and lowered in humidity, wherein the two or more demisters 230 are located behind the filter 220, while having a space portion g with a width of 0.5 cm between facing surfaces thereof, the second outside air inlets 240 are connected directly to the undersides of the demisters 230 to allow the outside air w to be introduced directly into the demisters 230, and the condensation filter further comprises an eliminator 250 located spaced apart from the demisters 230 by a given distance to remove water contained in the white smoke-removed exhaust air b2 emitted from the demisters 230 once again.
The heat exchanger 100 may further include a cooling fan 180 located on one side of the outside thereof or close thereto in such a way as to be connected to the first outside air inlet 130 and the second outside air inlets 240 to suck and cool the outside air w, and the condensation filter 200 may further include an exhaust fan 270 located on one side of the outside thereof or close thereto in such a way as to emit the white smoke-removed exhaust air b2, while sucking the heat-exchanged exhaust air b1 to allow the white smoke particles contained in the heat-exchanged exhaust air b1 to collide against one another.
The condensation filter 200 may further include a rotating member 260 disposed between the demisters 230 and the eliminator 250 to allow the white smoke-removed exhaust air b2 and the outside air w to collide against each other, and a shaft of the rotating member 260 may be located vertically between the demisters 230 and the eliminator 250 of the condensation filter 200 so that the rotating member 260 rotates around the shaft, the rotating member 260 having a spiral rotating blade 261 integral or separably coupled with the outer peripheral surface thereof.
To accomplish the above-mentioned objects, according to another aspect of the present invention, there is provided a white smoke removal method using the white smoke removal apparatus, including the steps of: the introduction step S10 of introducing the exhaust air b and the outside air w; the heat exchange step S20 of performing heat exchange between the exhaust air b and the outside air w in the heat exchanger 100; the moving step S30 of moving the heat-exchanged outside air w1 to the mixer 300 and moving the heat-exchanged exhaust air b1 to the condensation filter 200; the first white smoke removal step S40 where after the heat-exchanged exhaust air b1 moves to the condensation filter 200, the heat-exchanged exhaust air b1 cooledly mixes with the outside air w through the filter 220, the demisters 230, the rotating member 260, and the eliminator 250 to allow the white smoke particles contained therein to collide against one another to remove the white smoke particles and produce the condensate water, and the white smoke-removed exhaust air b2 moves to the mixer 300; and the second white smoke removal step S50 of mixing the heat-exchanged outside air w1 through the moving step S30 and the white smoke-removed exhaust air b2 through the first white smoke removal step S40 and emitting mixed air in a state where the mixed air is raised in temperature and lowered in humidity.
In the introduction step S10 and the first white smoke removal step S40, the cooling fan 180 and the exhaust fan 270 operate, respectively or solely, to introduce and emit the exhaust air b and the outside air w, cool the heat-exchanged exhaust air b2, and remove the fine dust and white smoke particles from the heat-exchanged exhaust air b2.
According to the present invention, the white smoke removal apparatus and the white smoke removal method using the same are capable of allowing the outside air to be introduced directly into the demisters, when the heat-exchanged exhaust air passes through the condensation filter, to form solid contact surfaces on which the heat-exchanged exhaust air and the outside air collide against each other, while achieving the removal of the white smoke particles as its original purpose, thereby producing a larger amount of condensate water than an amount of condensate water produced through the collision in the air, capable of reducing the size of the condensation filter through the direct introduction of the outside air into the demisters of the condensation filter, and capable of having the eliminator located in the condensation filter to remove water once again before the condensate water moves to the mixer, thereby optimizing the white smoke removal efficiency.
The present invention provides a white smoke removal apparatus and a white smoke removal method using the same that are capable of performing heat exchange between exhaust air and outside air by means of a heat exchanger, mixing the outside air and the exhaust air by means of a condensation filter to remove a large number of white smoke particles and produce a large amount of condensate water, and mixing the heat-exchanged exhaust air and the heat-exchanged outside air together once again to remove the white smoke in a state where the mixed air is raised in temperature and lowered in humidity.
Hereinafter, an explanation of a configuration and operations of a white smoke removal apparatus according to the present invention will be given in detail with reference to
As shown in
As shown in
In this case, a crossing member 101 is disposed in the heat exchanger 100 to cross the exhaust air b and the outside air w introduced thereinto. As a result, in the state where the exhaust air b introduced through the exhaust air inlet 120 and the outside air w introduced through the first outside air inlet 130 cross each other, heat exchange between them is performed, and next, they are emitted in different directions from each other.
Even if not shown, further, the ends of the crossing member extend to be completely connected to the inlets of the exhaust air b and the outside air w, but they may not be limited by the embodiment of the present invention.
As shown in
In this case, the exhaust air b is freely determined in type according to a place where the white smoke removal apparatus according to the present invention is built.
The first outside air inlet 130 is formed on one side of the heat exchanger 100, that is, on the other wise with respect to one side where the exhaust air inlet 120 is formed, to introduce the outside air w, so that the first outside air inlet 130 serves to introduce the outside air w so that the outside air w has the heat exchange with the exhaust air b.
Further, the heat exchanger 100 has a waste heat outlet 140 formed on one side of top thereof in such a way as to emit air generated after the heat exchange has been performed between the exhaust air b and the outside air w, and the waste heat outlet 140 serves to emit waste heat so that the air generated after the heat exchange is used for different purposes.
Moreover, the heat exchanger 100 has an outside air outlet 150 formed spaced apart from the waste heat outlet 140 on the upper portion thereof, and the outside air outlet 150 serves to exhaust heat-exchanged outside air w1 to the mixer 300.
The outside air outlet 150 is connected to the mixer 300 through the connection pipe 400.
In this case, one or more exhaust air inlets 120 and one or more first outside air inlets 130 may be formed, but according to the present invention, one exhaust air inlet 120 and one first outside air inlet 130 are formed.
The heat exchanger 100 has a moving path 160 formed on one side thereof, which is the other side with respect to one side where the exhaust air inlet 120, the first outside air inlet 130, the waste heat outlet 140, and the outside air outlet 150 are formed, and the moving path 160 is connected to a connection portion 210 of the condensation filter 200 and moves heat-exchanged exhaust air b1 therealong.
That is, as shown in
Even though not shown, further, a condensate water outlet is formed on the lower portion of the heat exchanger 100 to discharge condensate water produced after the heat exchange between the exhaust air b and the outside air w, and a water storage member (not shown) is located under the condensate water outlet to store the condensate water.
Further, the heat exchanger 100 has a cooling fan 180 located on one side of the outside thereof or close thereto, and the cooling fan 180 is connected to the first outside air inlet 130 and second outside air inlets 240, sucks the outside air w, and cools the outside air w. As a result, the cooling fan 180 cools general outside air w before the introduction into the heat exchanger 100 to a low temperature and introduces the cooled outside air w into the heat exchanger 100. In this case, the cooling fan 180 keeps the introduction speed of the outside air w at the same speed as the exhaust air b, thereby enabling the heat exchange between them to be performed uniformly.
That is, the cooling fan 180 achieves two objects. One object is to introduce the outside air w lowered in temperature into the heat exchanger 100, and the other object is to introduce the outside air w at the same introduction speed as the exhaust air b.
Further, the cooling fan 180 is located close or connected to the first outside air inlet 130 of the heat exchanger 100, and one or more cooling fans may be provided to optimize the cooling efficiency of the outside air w initially introduced.
Further, since the heat exchanger 100 is used together with the condensation filter 200, it has the size of ⅕ of the conventional heat exchanger, so that there is no limitation in building the heat exchanger 100, thereby enhancing economic efficiency.
As shown in
As shown in
The connection portion 210 serves as a path for moving the heat-exchanged exhaust air b1 from the moving path 160.
As shown in
Through the filter 220, the fine dust and foreign substances contained in the heat-exchanged exhaust air b1 are filtered, and next, the filtered exhaust air is cooled by the outside air w introduced through the second outside air inlets 240 and mixes with the outside air w.
As shown in
In the conventional practices, the demisters 230 are located to allow the outside air w introduced into the condensation filter 200 to be introduced into space portions formed on the front portions thereof.
Under such a configuration, if it is desired that a large number of demisters 230 are located to remove a lot of white smoke particles, the outside air w is introduced into the front portions of the respective demisters 230, and the outside air w cools the heat-exchanged exhaust air b1 and mixes therewith. To do this, each demister 230 has to have the space portion having a given size.
That is, a large number of demisters 230 are needed to enhance condensation efficiency with which condensate water is produced, and in this case, the space portions have to be formed between the facing surfaces of the respective demisters 230, thereby undesirably making the entire size of the condensation filter 200 bulky.
According to the present invention, however, the outside air 2 introduced through the second outside air inlets 240 is not introduced into the front portions of the demisters 230, but introduced directly into the interiors of the demisters 230, as shown in
In this case, the formation of the space portion g with a width of 0.5 cm or under prevents various problems such as corrosion on contacted surfaces when the demisters 230 are completely brought into close contact with each other from occurring, and under such a configuration, the condensation filter 200 is entirely reduced in size, while having the same condensation efficiency as in the conventional practices.
Further, if the outside air w is introduced into the second outside air inlets 240, as mentioned above, the outside air w cools the heat-exchanged exhaust air b1, mixes with the heat-exchanged exhaust air b1, and causes the white smoke particles contained in the heat-exchanged exhaust air b1 to collide against one another, thereby producing the condensate water. In this case, as the outside air w is introduced into the demisters 230, the heat-exchanged exhaust air b1 is optimized in condensation efficiency through the solid contact surfaces formed by the demisters 230 before it passes through the demisters 230, and the condensate water is discharged from the lower portions of the demisters 230. The condensate water may be utilized for various purposes.
As shown in
In this case, the number of second outside air inlets 240 corresponds to the number of demisters 230, and according to the present invention, since the number of demisters 230 is two, the number of second outside air inlets 240 is two.
Further, the second outside air inlets 240 are connected directly to the undersides of the demisters 230 to allow the outside air w to be introduced (supplied) into the demisters 230 so that the fine dust of the heat-exchanged exhaust air b1 is removed and the outside air w meets and cools the heat-exchanged exhaust air b1 to remove the white smoke particles.
Under the configurations of the second outside air inlets 240, the condensation efficiency is optimized, while the arrangement space of the demisters 230 is being reduced, so that economic efficiency and the reduction in the entire size of the condensation filter 200 are achieved, thereby minimizing the limitations in the installation position of the condensation filter 200.
Further, space portions having given widths are formed between the filter 220 and the demisters 230 and between the demisters 230 and the eliminator 250 as will be discussed later, respectively, and in this case, the space portion is necessarily formed between the demisters 230 and the eliminator 250.
If the space portion is formed, the white smoke-removed exhaust air b2, which is obtained after the exhaust air b1 passes through the demisters 230, collides against the outside air w again before moving to the eliminator 250 and mixes with the outside air w, thereby enhancing white smoke removal efficiency.
As shown in
In this case, as shown in
Further, the white smoke removal apparatus has an exhaust fan 270 located on one side of the outside of the condensation filter 200 or close to the condensation filter 200, to emit the white smoke-removed exhaust air b2, while sucking the heat-exchanged exhaust air b1 to allow the white smoke particles contained in the heat-exchanged exhaust air b1 to collide against one another. Under the operation of the exhaust fan 270, the collision of the white smoke particles contained in the heat-exchanged exhaust air b1 is optimized, thereby producing a large amount of condensate water for the removal of the white smoke particles.
In this case, one or more exhaust fans 270 may be provided if necessary.
As shown in
In this case, the mixer 300 is connected to the connection pipe 400 to introduce the heat-exchanged outside air w1 from the heat exchanger 100 and the white smoke-removed exhaust air b2 from the condensation filter 200, and the mixer 300 finally mixes the heat-exchanged outside air w1 and the white smoke-removed exhaust air b2 with each other, removes the white smoke in the state where the mixed air is raised in temperature and lowered in humidity, and exhausts the mixed air to the outside, without being seen with the naked eye.
As shown in
That is, each connection pipe 400 has the shape of a general pipe having a moving space portion along which gas, fluid, or the like moves.
Even though not shown, further, holes are formed on the heat exchanger 100 and the condensation filter 200 to discharge the condensate water produced when the heat exchange is performed in the heat exchanger 100 and the white smoke particles are removed in the condensation filter 200, and the holes are connected to the connection pipes 400.
Under the above-mentioned configuration, as shown in
As shown in
As shown in
As shown in
The first white smoke removal step S40 is a process where after the heat-exchanged exhaust air b1 as shown in
In this case, the collision among the white smoke particles is optimized by means of the exhaust fan 270 as well as the solid contact surfaces of the demisters 230, thereby producing a larger amount of condensate water than that in the conventional practices. That is, a larger number of white smoke particles than that in the conventional practices are removed.
Before the white smoke-removed exhaust air b2, which passes through the demisters 230, moves to the eliminator 250, the white smoke-removed exhaust air b2 cooledly mixes with the outside air w introduced from the second outside air inlets 240 once again to allow the white smoke particles to collide against one another, and in this case, cooling, mixing, and collision efficiencies are upgraded by means of the rotating member 260 rotating vertically.
As shown in
In the introduction step S10 and the first white smoke removal step S40, in this case, the cooling fan 180 and the exhaust fan 270 operate, respectively or solely, thereby introducing and emitting the exhaust air b and the outside air w, cooling the heat-exchanged exhaust air b2, and removing the fine dust and white smoke particles from the heat-exchanged exhaust air b2.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2021/014130 | 10/13/2021 | WO |
