KR101867886B1 - Apparatus for eliminating white-smoke - Google Patents

Abstract

The present invention relates to an apparatus to remove a phenomenon that steam looks like white smoke. According to the present invention, the apparatus to remove white smoke comprises: an exhaust gas transfer unit to supply high temperature and high humidity exhaust gas to a heat exchanger; the heat exchanger to cool and condense the high temperature and high humidity exhaust gas supplied from the exhaust gas transfer unit; an external air supply unit, which is a duct configuration to supply low temperature and dry external air to the inside, receiving a condensation unit of a heat pipe outwardly protruding from the heat exchanger therein, having one end part exposed to the outside, and having the other end part connected to an upper air mixing unit of the heat exchanger; an air mixing unit, which mixes the exhaust gas passing through the heat exchanger with the external gas flowing from the external air supply unit to lower humidity, including a porous mixing block and a third blowing fan to control the flow of air; a moisture absorption unit disposed on the upper part of the air mixing unit to absorb and condense the moisture included in the air; and a discharge unit to discharge the air passing through the moisture absorption unit to the outside.

Description

{APPARATUS FOR ELIMINATING WHITE-SMOKE}

The present invention relates to a device for removing white smoke, and more particularly, to a device for removing white smoke by removing water contained in a large amount of water vapor to remove the appearance of exhausted steam as white smoke.

Generally, the white plume phenomenon is a phenomenon in which heated humid air is cooled down to below the dew point by mixing with the cold air in the atmosphere, which is generated in an environment cooled down above the 100% saturation curve of the moisture diagram , And a phenomenon in which water vapor containing a large amount of water discharged to the outside through a chimney looks like white smoke (white smoke) discharged from the chimney.

In particular, the white smoke phenomenon occurs when the warm discharge air is mixed with the air in the cold atmosphere, and the white smoke phenomenon becomes more severe in the winter season when the air temperature in the atmosphere is low.

In addition, whiteness is not a pollutant when the solute is not used, but it is not only visible pollution that is visually contaminated when viewed from the outside, but it is discharged as white smoke through a chimney or the like even if it is not a pollutant As the hot and humid exhaust gas meets the cool air in the atmosphere, the water droplets that fall as the water drops below the dew point fall down around the chimney, causing discomfort to the person who hit the water drop. And there was a problem that a passenger slipped on the ice sheet and was injured.

This white smoke phenomenon is caused by the fact that in wet exhaust gas desulfurization equipment or exhaust gas treatment equipment, waste gas incineration facilities using power generation equipment such as wet scrubber, water Z quencher, etc., The above-mentioned white smoke phenomenon occurs frequently, and in the case of a general boiler, the humidity is low and the severity thereof is small, but the white smoke phenomenon is the same.

There is no legal restriction on the white smoke phenomenon, but in order to eliminate the white smoke phenomenon in general, it is necessary to prevent the inside of the chimney from being corroded by the reaction of moisture and oxides in the exhaust gas and to increase the exhaust gas temperature to improve the ventilation power of the exhaust gas, It is necessary to facilitate air diffusion, to secure a watch when taking off and landing aircraft near an airfield, and to prevent detracting from the aesthetics of cities and attractions.

In the case of white smoke discharged from the wet screw burr, acidic substances which are not completely vaporized and water vapor in the form of droplets, which are byproducts of neutralization reaction, can not diffuse and fall down the chimney and contact with surrounding vehicles, buildings, There is also a problem, so efforts to remove white smoke are needed.

In order to solve the above problems, Korean Patent No. 10-1143196 discloses a technique for removing the white smoke.

However, in the prior art, a separate facility for removing white smoke is installed beside the chimney so as to cool and condense the exhaust gas discharged from the chimney. However, since the size of the facility is too large to install and maintain, And water is injected into the exhaust gas steam to increase the condensation. However, this increases the humidity contained in the exhaust gas, which is not effective in removing the white smoke.

Korean Registered Patent No. 10-1143196 (Apr. 27, 2012) Korean Patent No. 10-1756373 (Jul. 07, 2014)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a miniaturized device that can be extended to a chimney through which exhaust gas of high temperature and high- have.

It is another object of the present invention to provide a device configuration in which hot and humid water vapor can be rapidly cooled and condensed in a short time and changed into low-temperature dry air.

According to an aspect of the present invention, there is provided an exhaust gas purification apparatus comprising: an exhaust gas transferring section for supplying hot and humid exhaust gas to a heat exchanger; Wherein the high temperature and high humidity exhaust gas supplied from the exhaust gas transfer unit is cooled and condensed to extend the residence time of the air and the lower side is formed in such a form that the space is gradually widened from the injection hole into which the exhaust gas flows, A plurality of heat pipes are slidably fitted to the wall surface to cool the inside air, and external air is passed through the heat pipe at a certain position A heat exchanger including a plurality of cooling tubes connected to each other to connect the cooling tubes to each other; A condenser portion of a heat pipe projecting outward from the heat exchanger is housed inside, one end portion is exposed to the outside, and the other end portion is connected to the upper air mixing portion of the heat exchanger Connected external air supply; An air mixer including a mixing block having a porous structure and a third blowing fan for controlling the flow of air by mixing the exhaust gas passed through the heat exchanger and the outside air introduced from the outside air supply unit to lower the humidity; A moisture adsorbing portion positioned above the air mixing portion to adsorb and condense moisture in the air; And a discharge unit for discharging the air having passed through the moisture adsorption unit to the outside.

The heat pipe may include a condenser formed at an upper portion of the heat pipe, the condenser being configured to condense the refrigerant in a gaseous state as the temperature of the refrigerant is lowered, A vaporizing passage corresponding to a passage through which the gaseous refrigerant vaporized from the evaporating section moves, a condensing passage corresponding to a passage through which the refrigerant in the liquid state cooled by the condensing section moves, and a condensing passage corresponding to the passage between the vaporizing passage and the condensing passage And a barrier rib formed thereon.

The heat exchanger includes a plurality of thermoelectric elements, a temperature sensor for sensing a temperature inside the heat exchanger, and a controller for controlling a cooling rate by controlling a current value transmitted to the thermoelectric elements according to the sensed temperature value .

In addition, the water adsorbing portion may include lithium chloride (LiCl) crystals.

The apparatus for removing white smoke according to the present invention can be extended to a conventional chimney, thereby reducing the construction cost and facilitating installation and maintenance from a compact structure.

In addition, it is possible to rapidly cool and condense the exhaust gas of high temperature and high humidity in a short time, thereby providing reliability to the removal of white smoke.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of a white smoke removing apparatus according to an embodiment of the present invention; FIG.
FIG. 2 is a use state diagram showing the flow of air in the apparatus for removing white smoke according to the embodiment of the present invention.
3 is a configuration diagram showing a configuration of a heat exchanger according to an embodiment of the present invention.
FIG. 4 is a configuration diagram illustrating a heat pipe according to an embodiment of the present invention.

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

FIG. 1 is an overall configuration view of a device for removing white smoke according to an embodiment of the present invention, and FIG. 2 is a state diagram illustrating the flow of air in the device for removing white smoke according to an embodiment of the present invention.

As described above, the apparatus for removing white smoke according to the embodiment of the present invention includes the exhaust gas transferring section 10, the heat exchanger 20, the external air supply section 30, the air mixing section 40, the water adsorption section 50, and a discharge unit 60.

The exhaust gas transferring unit 10 is formed in a duct shape extending from a chimney through which exhaust gas of high temperature and high humidity is discharged, and interconnected with a heat exchanger 20 described later.

The exhaust gas transferring unit 10 further includes a condensed water discharge hole 11 vertically downward from the heat exchanger 20 so that the condensed water discharged from the heat exchanger 20 can be discharged downward .

Preferably, the exhaust gas transfer section 10 is vertically communicated from the chimney, is bent at least once in one direction, and then connected to the heat exchanger 20, A condensed water discharge hole 11 is formed. This configuration is for separately separating the condensed water generated in the process of cooling and condensing the exhaust gas in the heat exchanger 20 to prevent the reverse flow to the chimney into which the exhaust gas flows.

3 is a configuration diagram showing a configuration of a heat exchanger according to an embodiment of the present invention.

The heat exchanger 20 is configured to cool and condense the high temperature and high humidity air introduced from the exhaust gas transferring part 10 to lower the temperature and humidity. The hollow space part is formed inside and the exhaust gas transferring part 10 And a discharge hole 22 is formed in the upper part so that the cooled gas can be discharged.

The heat exchanger (20) is a cooling means, and a plurality of heat pipes (23) are connected to the wall surface of the heat exchanger (20) to cool the hot and humid exhaust gas flowing into the heat exchanger .

In addition, the heat exchanger 20 has a reverse tapered shape in which the space is gradually widened toward the upper end with reference to the lower end portion, and after passing through a certain space portion, the space gradually tapers toward the upper end portion. Such a shape maximizes the time for the exhaust gas to stay in the heat exchanger 20 while reducing the flow rate from the expanded space after the hot and humid exhaust gas is rapidly introduced into the heat exchanger 20, The upper end portion of the upper portion is narrowed again so that the cooled air can be quickly discharged. In order to balance the discharged air amount, the lower portion of the heat exchanger 20 is provided with a charging hole 21 formed at the lower end of the heat exchanger 20, The middle body of the heat exchanger 20 is formed to have a larger width or diameter than the inlet hole 21 and the outlet hole 22, So that the residence time can be maximized.

The heat pipe 23 is used to cool hot and humid exhaust gas with low temperature and dry air. The heat pipe 23 is connected to the heat exchanger 20 so as to penetrate the wall surface of the heat exchanger 20.

FIG. 4 is a configuration diagram illustrating a heat pipe according to an embodiment of the present invention.

The heat pipe 23 removes heat when the refrigerant contained in the refrigerant meets high temperature ambient air, vaporizes and evaporates the refrigerant state, and the refrigerant whose temperature is lowered again moves the heat energy while repeating the process of condensing. A condensing portion 23b formed on the lower portion of the evaporator 23a and a condenser 23a formed on the lower portion of the evaporator 23a for condensing the refrigerant, A vaporizing passage 23c corresponding to a passage through which the gaseous refrigerant vaporized from the evaporating portion 23a moves and a condensing passage 23c corresponding to a passage through which the refrigerant in the liquid state cooled from the condensing portion 23b moves, (23d).

The evaporator 23a is positioned inside the heat exchanger 20 and the condenser 23b is disposed in the heat exchanger 20 so that the heat pipe 23 can be easily heated, The heat pipe 23 is installed at a position outside the heat exchanger 20 so as to maximize a portion in contact with the high temperature exhaust gas, It is preferable to apply it in an inclined form.

In addition, the vaporization passage 23c and the condensation passage 23d are spaces in which the refrigerants having different property states move, and at this time, the influence of the refrigerant in the hot gaseous state on the properties of the refrigerant in the low temperature liquid state is minimized It is preferable to form a partition 23e between the vaporizing passage 23c and the condensing passage 23d or to form independent moving passages separated from each other.

Since the gaseous refrigerant and the liquid refrigerant have different volumes, the inner width of the vaporization passage 23c and the inner space of the condensation passage 23d are formed at a ratio of 2: 1, .

The lower portion of the heat exchanger 20 is coupled with a plurality of cooling tubes 24 through which the cooling surfaces that can be brought into contact with the outside air are increased to allow rapid cooling. This is because external cold air passes through the heat exchanger 20 through the cooling pipe 24 while hot air can be exchanged with the cooling pipe 24 inside the heat exchanger 20.

A first conveying fan (25) is formed at an upper portion spaced apart from the cooling pipe (24). The first conveying fan 25 draws the exhaust gas flowing through the exhaust gas transferring part 10 into the heat exchanger 20 and conveys the air to the upper part after the inside of the heat exchanger 20 is cooled. And a blowing function of the suction and discharge functions.

A plurality of thermoelectric elements (26) are provided on the inner wall surface of the heat exchanger (20). This is to forcibly remove heat by the Peltier effect, allowing the hot and humid exhaust gas staying in the heat exchanger 20 to be quickly cooled and condensed.

Such a thermoelectric element 26 can be controlled in its intensity from a temperature sensor 26a formed at a certain portion inside the heat exchanger 20 and a control portion 26b for controlling the operation of the thermoelectric element 26. The temperature sensor 26a, The controller 26b controls the current value delivered to the thermoelectric element 26 and controls the intensity of the thermoelectric element 26 to adjust the cooling rate according to the sensed temperature value.

The outer air supply unit 30 corresponds to a duct configuration for supplying the outside air with low temperature and dried inside and accommodates the condensation unit 23b of the heat pipe 23 protruding outward from the heat exchanger 20 inside And the other end is connected to the air mixing part 40 formed on the upper part of the heat exchanger 20. [

That is, the outside air that has been dried at a low temperature is introduced into the outside air supply unit 30 and changed into hot and dry air while passing through the duct accommodating the condensed portion 23b of the heat pipe 23, It is possible to further reduce the humidity by mixing with the passing air.

The external air supply unit 30 forms a mesh net 31 at an end where external air is introduced to disperse the pressure of external air to be introduced and to block foreign matter from entering.

In addition, a second blowing fan 32 is formed inside the mesh net 31 so that external air can be easily introduced.

The air mixing unit 40 is configured to mix the exhaust gas whose temperature and humidity have been reduced while passing through the heat exchanger 20 and the outside air that has been introduced from the outside air supply unit 30 at a high temperature and dried state to further lower the humidity will be.

The air mixing unit 40 includes a mixing block 41 and a third blowing fan 42. The mixing block 41 has a structure in which air can flow in all directions, Forming a skeleton that can be collected and condensed. That is, the mixing block 41 may be formed in the form of a porous block having a plurality of through holes so as to balance heat energy and facilitate condensation in the air during the air mixing process, Lt; / RTI >

In addition, a third blowing fan 42 is formed on the upper part of the mixing block 41 to transfer the air so that the mixed air can be easily discharged to the outside.

The water adsorption unit 50 is located above the air mixing unit 40. The water absorption unit 50 includes a plurality of lithium chloride (LiCl) crystals, which are excellent in water absorption performance, So that it can be absorbed quickly.

The size and position of the crystals can be appropriately arranged so that the lithium chloride (LiCl) does not cause a large resistance to the flow of the discharged air.

The discharge unit 60 discharges the low temperature and dry air that has passed through the moisture adsorption unit 50 to the outside, so that a fourth blowing fan 61 can be further formed for easy air flow.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. And can be modified and changed.

10: exhaust gas transfer part 11: condensed water discharge hole
20: Heat exchanger 21:
22: Exhaust hole 23: Heat pipe
23a: evaporator 23b: condenser
23c: vaporization passage 23d: condensation passage
23e: partition wall 24: cooling pipe
25: first feed fan 26: thermoelectric element
26a: Temperature sensor 26b:
30: external air supply unit 31: mesh network
32: second blower fan 40: air mixing part
41: mixing block 42: third blowing fan
50: water absorption unit 60:
61: Fourth blowing fan

Claims (5)

delete An exhaust gas transfer section (10) for supplying hot and humid exhaust gas to the heat exchanger (20); Temperature and high-humidity exhaust gas supplied from the exhaust gas transferring unit 10 is cooled and condensed to extend the residence time of the air, and the lower side thereof has a shape in which the space gradually widens from the charging hole 21 into which the exhaust gas flows And the space is gradually narrowed toward the exhaust hole 22 through which the exhaust gas is discharged. On the wall surface of the exhaust pipe 23, a plurality of heat pipes 23 are sloped And a plurality of cooling pipes (24) connected to both sides of the heat exchanger (20) so as to allow outside air to pass therethrough; The condensing portion 23b of the heat pipe 23 protruded outward from the heat exchanger 20 is accommodated in the inside and the one end is exposed to the outside and the other side An outer air supply part 30 connected to the upper air mixing part 40 of the heat exchanger 20; The exhaust gas passing through the heat exchanger 20 and the outside air introduced from the outside air supply unit 30 are mixed to lower the humidity. The mixing block 41 has a porous structure. An air mixing portion 40 including a blowing fan 42; A moisture adsorption unit 50 located above the air mixing unit 40 to adsorb and condense moisture in the air; And a discharge unit (60) for discharging the air that has passed through the moisture adsorption unit (50) to the outside,
The heat pipe 23 includes a vaporizing portion 23a formed therein to receive the refrigerant therein and having a liquid refrigerant deprived of the surrounding heat and being vaporized, A vaporizing passage 23c corresponding to a passage through which gaseous refrigerant vaporized from the evaporator 23a moves and a refrigerant liquid refrigerant cooled from the condensing section 23b A condensing passage 23d corresponding to the passage and a partition 23e formed between the vaporizing passage 23c and the condensing passage 23d.
3. The method of claim 2,
And the inner width of the vaporizing passage (23c) and the inner diameter of the condensing passage (23d) are formed at a ratio of 2: 1.
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