KR101625029B1 - Oxidation apparatus of volatile organic compound - Google Patents

Abstract

The present invention relates to a volatile organic compound oxidizing apparatus, and more particularly, to a volatile organic compound oxidizing apparatus having a temperature filter provided between a combustion oxidizing unit and a catalyst oxidizing unit to uniformly heat the noxious gas discharged from the combustion oxidizing unit, Thereby allowing the volatile organic compound to be completely oxidized in all regions of the combustion oxidizing portion and the catalytic oxidizing portion to thereby provide stable processing efficiency. The apparatus for oxidizing a volatile organic compound according to the present invention comprises a main body having an inlet through which a noxious gas containing a volatile organic compound flows, a burning oxidation unit provided in the main body for burning a noxious gas introduced from the inlet, A catalytic oxidizing portion provided at a downstream end of the combustion oxidizing portion and for secondary decomposition by catalytic oxidation of a noxious gas decomposed first in the combustion oxidizing portion, and a catalytic oxidizing portion provided between the combustion oxidizing portion and the catalytic oxidizing portion, And a temperature filter for uniformly diffusing the temperature of the noxious gas heated by the noxious gas discharged from the catalytic oxidation unit into the main body.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for oxidizing a volatile organic compound,

The present invention relates to a volatile organic compound oxidizing apparatus, and more particularly, to a volatile organic compound oxidizing apparatus having a temperature filter provided between a combustion oxidizing unit and a catalyst oxidizing unit to uniformly heat the noxious gas discharged from the combustion oxidizing unit, Thereby allowing the volatile organic compound to be completely oxidized in all regions of the combustion oxidizing portion and the catalytic oxidizing portion to thereby provide stable processing efficiency.

In general, volatile organic compounds are harmful substances that cause harmful substances such as respiratory tract disorders and carcinogenic substances. They cause smog formation through photochemical reaction and environmental pollution as a cause of bad smell .

The harmful gas generated from the factory including the volatile organic compounds is generally removed through an oxidation process. The regenerative thermal oxidization apparatus using combustion oxidation and the regenerative catalytic oxidation using the catalytic oxidation ) Device is a representative method.

Japanese Laid-Open Patent Publication No. 2007-132611 describes a regenerative combustion oxidizing apparatus. The regenerative combustion oxidizing apparatus is provided with piping and valves and a large amount of regenerating material over a wide range to burn and oxidize the organic compound. This requires a considerably large amount of regenerating material, the size of the apparatus itself is increased, There is a disadvantage in that energy loss due to the high oxidation temperature and the forced exhaust system is large.

Korean Patent Registration No. 10-0588067 describes a regenerative catalytic oxidation apparatus. The regenerative catalytic oxidation apparatus is equipped with a catalyst for various kinds of volatile organic compounds and allows the harmful gas to pass through the catalyst and oxidize. This causes a lot of operation cost due to a large amount of energy to be lost, There is a disadvantage in that the operation of the apparatus is severely fluctuated depending on the decrease in service life and the change in the kind of the organic compound.

Accordingly, in order to compensate for the mutual disadvantages of each of the combustion oxidation and the catalytic oxidation, a method of combining these devices may be used.

However, the combined structure of the combustion oxidation and the catalytic oxidation described above has a disadvantage in that the heat generated from the combustion oxidation does not uniformly diffuse, and there is a temperature variation in each region, and the heating of the harmful gas is unevenly performed, .

Also, the dense heat has a disadvantage in that the thermal shock is applied to a specific region of the catalyst layer or the heat exchange portion, thereby reducing the service life of the catalyst layer or the heat exchange portion.

1. JP-A-2007-132611 (published on May 31, 2007) 2. Korean Patent Registration No. 10-0588067 (registered on June 1, 2006)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a method and an apparatus for efficiently and efficiently purifying harmful gas by uniformly diffusing heat of a noxious gas discharged from a combustion oxidizing unit into a catalytic oxidizing unit, .

According to an aspect of the present invention, there is provided an apparatus for oxidizing a volatile organic compound, the apparatus comprising: a main body having an inlet through which a noxious gas containing a volatile organic compound flows; A catalytic oxidizing section provided at a downstream end of the combustion oxidizing section for secondary oxidizing the noxious gas decomposed first in the combustion oxidizing section by catalytic oxidation; and a catalytic oxidizing section provided between the combustion oxidizing section and the catalytic oxidizing section And a temperature filter for uniformly diffusing the temperature of the noxious gas heated by the noxious gas discharged from the combustion oxidizing unit into the catalytic oxidizing unit.

The present invention further includes a first heat exchanger provided at a downstream end of the catalytic oxidizer to preheat the noxious gas flowing into the inlet using the heat of the clean gas discharged from the catalytic oxidizer. Further, the present invention may further include a first preheating gas supply pipe communicating the first heat exchanging unit and the inlet.

Further, the present invention further includes a second heat exchanger provided between the temperature filter and the catalytic oxidizer to preheat the noxious gas introduced into the inlet using the heat of the noxious gas discharged from the combustion oxidizer . Further, the present invention may further include a second preheating gas supply pipe communicating the first heat exchange unit and the second heat exchange unit, and a third preheated gas supply pipe communicating the second heat exchange unit and the inlet.

Further, the present invention is characterized by further comprising a concentrator provided at a front end of the first heat exchanger and configured to adsorb and concentrate the noxious gas introduced from the outside. The present invention further includes a third heat exchanger provided at a downstream end of the first heat exchanger and preheating external air supplied to the concentrator using the heat of the clean gas discharged from the first heat exchanger, do. Further, the present invention may further include a fourth preheating gas supply pipe and a concentrated harmful gas supply pipe which communicate the first heat exchange unit and the third heat exchange unit.

Further, the present invention is characterized in that the temperature filter is arranged so as to be oriented perpendicular to the flow of the noxious gas. Further, the present invention is characterized in that the temperature filter is composed of a plurality of unit cells constituting a porous lattice or a honeycomb structure. The temperature filter may be formed of any one of alumina, silica, titania, zirconia, magnesia, silica-alumina, silica-zirconia, titania-zirconia, titania-silica, alumina-titania, alumina-zirconia, silicon carbide, Or a mixture thereof. Further, the present invention is characterized in that a hole penetrating the center of the upper surface or the right and left sides is formed inside the temperature filter.

According to the present invention configured as described above, the heat of the noxious gas heated by the combustion is uniformly diffused in the main body, so that the total amount of heat is kept constant, thereby achieving complete oxidation, thereby providing stable processing efficiency.

Further, since the heat of the noxious gas heated by the combustion is uniformly dispersed in the main body, the thermal shock applied to the heat exchanger or the catalyst can be minimized to increase the service life of the heat exchanger or the catalyst.

Further, the present invention can minimize the consumption of fuel consumed in the heating of the noxious gas by preheating and treating the noxious gas including the volatile organic compound, which has a plurality of heat exchangers.

Further, the present invention has a simple structure in which a combustion oxidizing unit, a catalytic oxidizing unit, and a plurality of heat exchangers are integrally manufactured, minimizing the use of piping and thus reducing the number of faults and facilitating maintenance.

1 is a view schematically showing a device for oxidizing a volatile organic compound according to a first embodiment of the present invention;
2 is a perspective view of a temperature filter according to a first embodiment of the present invention;
3 is a view schematically showing the apparatus for oxidizing a volatile organic compound according to the second embodiment of the present invention
4 is a view schematically showing the apparatus for oxidizing a volatile organic compound according to the third embodiment of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing a volatile organic compound oxidation apparatus according to a first embodiment of the present invention.

1, the apparatus for oxidizing a volatile organic compound according to the present invention includes a main body 10 and a combustion oxidizing unit 100, a catalytic oxidizing unit 200, a temperature filter 300, 1 heat exchanging unit 400 and a first preheating gas supply pipe 410. [

The main body 10 has a rectangular parallelepiped shape and has an inlet 11 through which a noxious gas containing a volatile organic compound flows and a noxious gas introduced into the main body 10 through the inlet 11, The exhaust port 12 through which the purified gas processed through the oxidation unit 100, the catalytic oxidation unit 200, and the temperature filter 300 is discharged is formed. Since the combustion oxidizing unit 100 and the catalytic oxidizing unit 200 are integrally provided in the body 10 as described above, the entire structure of the apparatus is simplified and miniaturized, and the heat loss to the outside is minimized Thereby maximizing the thermal efficiency of the entire noxious gas treatment process.

The burning oxidation unit 100 is located at one side of the main body 10 and includes a burner 110 for heating the noxious gas introduced through the inlet 11. The inside of the combustion oxidizing unit 100 is heated to a high temperature of about 800 ° C due to the heating action of the burner 110, whereby the noxious gas containing the volatile organic compound is burned and decomposed.

The catalytic oxidizing unit 200 is disposed at the rear end of the combustion oxidizing unit 100 in the main body 10 and includes a catalyst layer 210 for continuously decomposing noxious gas decomposed first in the combustion oxidizing unit 100 using a catalyst, . As the catalyst, generally, a noble metal such as platinum or palladium, or a metal oxide such as chromium oxide, cobalt oxide, copper oxide, manganese oxide, or the like may be used, and the particulate catalyst may be filled in the carrier, The support may be formed by molding gamma alumina having a large specific surface area into a honeycomb type honeycomb type, a pellet type, a net structure, or the like. .

In general, the catalyst layer 210 of the catalytic oxidation unit 200 can decompose the noxious gas with the highest efficiency at a temperature of about 450 ° C. In addition, the best decomposition efficiency can be expected only if the harmful gas flows into the entire surface of the catalyst layer 210 with a uniform temperature distribution so that oxidation can proceed throughout the catalyst layer 210.

Between the combustion oxidizing unit 100 and the catalytic oxidizing unit 200, a temperature filter 300 for partitioning the combustion oxidizing unit 100 and the catalytic oxidizing unit 200 and determining the respective regions is located.

The temperature filter 300 divides the combustion oxidizing unit 100 and the catalytic oxidizing unit 200 and allows the noxious gas heated in the combustion oxidizing unit 100 to diffuse in the main body 10 at a uniform temperature . That is, the temperature filter 300 not only adjusts the temperature of the noxious gas flowing into the catalyst oxidizing unit 200 to an optimum temperature suitable for the catalyst oxidation, Allow the harmful gas to enter the temperature.

2 is a perspective view of a temperature filter according to the present invention.

2, the temperature filter 300 of the present invention includes a unit cell 310 providing a flow path for noxious gas and a hole 320 forming a vortex flow of the noxious gas, .

The unit cells 310 are repeatedly formed on the surface of the temperature filter 300 to form a plurality of porous lattice or honeycomb structures. It is preferable that the unit cell 310 provides a passage through which the noxious gas can pass through the temperature filter 300 and is formed in such a structure that the noxious gas can contact with the temperature filter 300 as much as possible.

The holes 320 are formed to pass through the center of the upper or lower surface of the temperature filter 300 or the left and right surfaces thereof. The shape of the hole 320 may be circular, but is not limited thereto, and it is appropriate that the hole 320 can provide a certain space inside the temperature filter 300. The unit cell 310 is repeatedly formed on the inner surface of the hole 320.

The temperature filter 300 may comprise a ceramic material such as alumina, silica, titania, zirconia, magnesia, silica-alumina, silica-zirconia, titania-zirconia, titania-silica, alumina-zirconia, cordierite, mullite, and mixtures or combinations thereof.

The temperature filter 300 allows the heat generated in the combustion oxidizing unit 100 to be uniformly diffused in the main body 10. That is, the noxious gas introduced through the unit cell 310 forms a vortex in the hole 320, so that the noxious gas remains for a certain period of time to continue oxidizing action, thereby maximizing the combustion oxidation effect. The temperature of the noxious gas introduced into the temperature filter 300 becomes uniform due to the eddy current and flows into the catalytic oxidizing unit 200. As a result, The catalytic oxidation is performed.

The first heat exchanging part 400 is located at the rear end of the combustion oxidizing part 100 in the main body 10. The first heat exchanger 400 may be a main heat exchanger having an excellent heat exchange efficiency, but the present invention is not limited thereto. The first heat exchanging unit 400 preheats the noxious gas flowing from the inlet 11 using the heat of the clean gas discharged from the catalytic oxidizing unit 200.

The first preheated gas supply pipe 410 is provided to communicate the first heat exchanging part 400 and the combustion oxidizing part 100 with each other. Preferably, the first preheated gas supply pipe 410 is made of a heat resistant material which is not damaged even by high temperature by the heated noxious gas. In this embodiment, the first preheated gas supply pipe 410 is provided outside the main body 10. The first heat exchange unit 400 and the combustion oxidation unit 100 may be provided in the body 10 or may be provided through the temperature filter 300 and the catalytic oxidation unit 200 between the first heat exchange unit 400 and the combustion oxidation unit 100 . The first preheated gas supply pipe 410 guides the noxious gas preheated from the first heat exchange unit 400 to the combustion oxidation unit 100.

Hereinafter, the operation of the apparatus for oxidizing a volatile organic compound of this embodiment will be described.

As shown in FIG. 1, noxious gases including volatile organic compounds emitted from various processes such as electronic products, semiconductors, and LCD manufacturing processes are introduced at a temperature of about 40 ° C. The introduced noxious gas passes through the first heat exchanging unit 400 and is preheated. At this time, the preheating temperature may vary depending on the design of the first heat exchanging part 400, but it is preferably preheated to 230 캜. The preheated noxious gas flows into the combustion oxidation unit 100 through the first preheated gas supply pipe 410. The temperature of the noxious gas introduced into the combustion oxidizing unit 100 rises due to the heating of the burner 110, whereby the primary decomposition is performed by reaching 800 ° C. The heated noxious gas passes through the unit cell 310 of the temperature filter 300 and flows into the hole 320 of the temperature filter 300. The harmful gas flowing into the hole 320 causes a vortex to continue oxidizing action and passes through the temperature filter 300 at a uniform temperature. The noxious gas that has passed through the temperature filter 300 is diffused into the catalyst oxidizing unit 200. At this time, the temperature of the catalytic oxidizing unit 200 may vary depending on the treatment capacity of the noxious gas and the distance from the burner 110 of the combustion oxidizing unit 100. However, considering the appropriate temperature for catalytic oxidation, . The gas subjected to the secondary treatment through the catalytic oxidizing unit 200 is heat-exchanged with the noxious gas introduced from the outside in the first heat exchanging unit 400, and then discharged through the exhaust port. It is preferable that the clean gas is discharged at a temperature of 110 ° C or lower.

3 schematically shows a volatile organic compound oxidation apparatus according to a second embodiment of the present invention.

For the sake of descriptive convenience, the same configuration as that of the other embodiments and a detailed description of its operation will be omitted.

3, the apparatus for oxidizing a volatile organic compound according to the present embodiment includes a main body 10, a combustion oxidizing unit 100, a catalytic oxidizing unit 200, a first heat exchanging unit 400, a temperature filter 300, A second preheating gas supply pipe 420, and a third preheating gas supply pipe 430. The second heat exchange unit 500 includes a first preheating gas supply pipe 420, a second preheating gas supply pipe 420,

The second heat exchanging part 500 is located between the temperature filter 300 and the catalytic oxidizing part 200. The second heat exchanger 500 may be a main heat exchanger having an excellent heat exchange efficiency. However, the second heat exchanger 500 is not limited to the heat exchanger. The second heat exchanging part (500) ensures that the harmful gas discharged from the combustion oxidizing part (100) secures a temperature condition suitable for the catalytic oxidizing part (200). That is, the second heat exchanging part 500 introduces noxious gas heated up to 800 ° C in the combustion oxidizing part 100 and discharges it to 450 ° C, whereby the catalytic oxidizing part 200 has the highest processing efficiency. On the other hand, the second heat exchanging unit 500 preheats the incoming noxious gas using the heat of the first decomposed noxious gas discharged from the combustion oxidizing unit 100.

The second preheated gas supply pipe 420 is provided to communicate the first heat exchanging unit 400 and the second heat exchanging unit 500. Preferably, the second preheated gas supply pipe 420 is made of a heat resistant material which is not damaged even by high temperature by the heated noxious gas. In this embodiment, the second preheated gas supply pipe 420 is provided outside the main body 10. The present invention is not limited thereto and may be provided inside the main body 10 or may further be provided through the catalytic oxidizing part 200 between the first heat exchanging part 400 and the second heat exchanging part 500. The second preheated gas supply pipe 420 guides the noxious gas preheated from the first heat exchange unit 400 to the second heat exchange unit 500.

The third preheated gas supply pipe is provided so as to communicate the second heat exchanging part (500) and the combustion oxidizing part (100). The third preheated gas supply pipe 430 is preferably made of a heat resistant material which is not damaged even by high temperature due to the heated noxious gas. In this embodiment, the third preheated gas supply pipe 430 is provided outside the main body 10. The heat exchanger 500 may be provided inside the main body 10 or may be provided through the temperature filter 300 between the second heat exchanger 500 and the combustion oxidizer 100. The third preheated gas supply pipe 430 allows the preheated gas from the second heat exchange unit 500 to flow into the combustion oxidizing unit 100.

Hereinafter, the operation of the apparatus for oxidizing a volatile organic compound of this embodiment will be described.

As shown in FIG. 3, noxious gases including volatile organic compounds emitted from various processes such as electronic products, semiconductors, and LCD manufacturing processes are introduced at a temperature of about 40 ° C. The introduced noxious gas passes through the first heat exchanging unit 400 and is preheated. At this time, the preheating temperature may vary depending on the design of the first heat exchanging part 400, but it is preferably preheated to 230 캜. The noxious gas preheated in the first heat exchanging unit 400 flows into the second heat exchanging unit 500 through the third preheating gas supply pipe 430 and is preheated. The noxious gas is preferably preheated to 680 占 폚 in the second heat exchanging part (500). The preheated noxious gas flows into the combustion oxidizing unit 100. The temperature of the noxious gas introduced into the combustion oxidizing unit 100 rises due to the heating of the burner 110, thereby achieving a primary decomposition at 800 ° C. The heated noxious gas passes through the unit cell 310 of the temperature filter 300 and flows into the inner hole 320 of the temperature filter 300. The noxious gas flowing into the inner hole 320 causes a vortex and continues to oxidize and pass through the temperature filter 300 at a uniform temperature. The noxious gas having passed through the temperature filter (300) flows into the second heat exchanging part (500). The noxious gas introduced into the second heat exchanging part 500 is heat-exchanged with the noxious gas introduced from the first heat exchanging part 400 and then flows into the catalyst oxidizing part 200 at a temperature of 450 ° C. The gas subjected to the secondary treatment through the catalytic oxidizing unit 200 is heat-exchanged with the noxious gas introduced from the outside in the first heat exchanging unit 400, and then discharged through the exhaust port. It is preferable that the clean gas is discharged at a temperature of 110 ° C or lower.

FIG. 4 schematically shows a VOC oxidizing apparatus according to a third embodiment of the present invention.

4, the apparatus for oxidizing a volatile organic compound according to the present embodiment further includes a thickener 700, a third heat exchanger 600, a fourth preheated gas supply pipe 440, and a concentrated noxious gas supply pipe 450 .

The concentrator 700 is disposed at the front end of the first heat exchanging part 400 and may be disposed outside the main body 10. The concentrator 700 supplies the concentrated noxious gas, thereby minimizing the cost of the flame. An adsorbent layer is provided in the concentrator 700. The adsorbent layer is formed of activated carbon or zeolite-based fibers to adsorb harmful substances contained in the low-temperature noxious gas, and when it is heated, the adsorbed harmful substances are desorbed.

In the concentrator 700, the adsorbent layer adsorbs and concentrates the noxious gas introduced from the outside. When the preheated external air is supplied from the third heat exchanging unit 600 to the adsorbent layer on which harmful substances are adsorbed, the concentrated noxious gas is moved to the second heat exchanging unit 500 while desorbing harmful substances. By this action, concentrated noxious gas and clean air are simultaneously produced in the concentrator 700. Apart from adsorbed and concentrated noxious gas, clean air is also generated, and this clean air is released into the air.

The third heat exchanging part 600 is located between the temperature filter 300 and the catalytic oxidizing part 200. The third heat exchanger 600 may be a main heat exchanger having an excellent heat exchange efficiency. However, the third heat exchanger 600 is not limited to the heat exchanger. The third heat exchanging unit 600 allows the concentrated noxious gas of the concentrator 700 to be desorbed from the adsorbent layer. The third heat exchanging part 600 enhances the preheating characteristic by supplementing the preheating action of the first heat exchanging part 400 at the rear end of the first heat exchanging part 400.

The fourth preheated gas supply pipe 440 is provided to allow the thickener 700 and the third heat exchanger 600 to communicate with each other. Preferably, the fourth preheated gas supply pipe 440 is made of a heat resistant material which is not damaged even by high temperature by the heated outside air and the noxious gas. In this embodiment, the fourth preheated gas supply pipe 440 is provided outside the main body 10. The fourth preheated gas supply pipe 440 guides the preheated external air from the third heat exchanger 600 to the concentrator 700.
The concentrated noxious gas supply pipe 450 is provided so that the concentrator 700 and the first heat exchanging unit 400 communicate with each other. The concentrated noxious gas supply pipe 450 is preferably made of a heat resistant material which is not damaged even by high temperature by the heated external air and noxious gas. The concentrated noxious gas supply pipe 450 guides the concentrated noxious gas adsorbed by the concentrator 700 to the first heat exchange unit 400.

Hereinafter, the operation of the apparatus for oxidizing a volatile organic compound of this embodiment will be described.

As shown in FIG. 4, noxious gas containing volatile organic compounds emitted from various processes such as electronic products, semiconductors, and LCD manufacturing processes flows into the concentrator 700 at a temperature of about 40 ° C. The introduced noxious gas is adsorbed in the concentrator 700 and concentrated. On the other hand, the outside air at room temperature flows into the main body 10 through the air blowing device. The preheating temperature may be varied depending on the design of the third heat exchanger 600, but is preferably preheated up to 180 ° C. The outside air preheated by the third heat exchanging part 600 flows into the thickener 700 through the fourth preheated gas supply pipe 440 and then desorbs the concentrated noxious gas into the concentrator 700, Is introduced into the first heat exchanging part (400). At this time, the temperature of the concentrated noxious gas is preferably 120 ° C. The noxious gas passes through the first heat exchanging part (400) and is preheated to 315 ° C. The noxious gas preheated in the first heat exchanging part 400 flows into the second heat exchanging part 500 through the third preheating supply pipe and is preheated. The noxious gas is preferably preheated to 750 DEG C in the second heat exchanging part (500). The preheated noxious gas flows into the combustion oxidizing unit 100. The temperature of the noxious gas introduced into the combustion oxidizing unit 100 rises due to the heating of the burner 110, thereby achieving a primary decomposition at 800 ° C. The heated noxious gas passes through the unit cell 310 of the temperature filter 300 and flows into the inner hole 320 of the temperature filter 300. The noxious gas flowing into the inner hole 320 causes a vortex and continues to oxidize and pass through the temperature filter 300 at a uniform temperature. The noxious gas having passed through the temperature filter (300) flows into the second heat exchanging part (500). The noxious gas introduced into the second heat exchanging unit 500 is heat-exchanged with the noxious gas introduced from the first heat exchanging unit 400, and then flows into the catalyst oxidizing unit 200 at a temperature of 450 ° C to be secondarily treated. The second cleaned gas passes through the first heat exchanging unit 400 and the third heat exchanging unit 600, exchanges heat with the concentrator 700 and the noxious gas introduced from the outside, and is discharged through the exhaust port. It is preferable that the clean gas is discharged at a temperature of 90 DEG C or lower.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Those skilled in the art will understand. Therefore, the scope of protection of the present invention should be construed not only in the specific embodiments but also in the scope of claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.

10: main body 11: inlet
12: exhaust port 100: burning oxidation part
110: burner 200: catalytic oxidation part
210: catalyst layer 300: temperature filter
310: unit cell 320: hole
400: first heat exchanger 410: first preheating gas supply pipe
420: second preheated gas supply pipe 430: third preheated gas supply pipe
440: Fourth preheated gas supply pipe 450: Concentrated harmful gas supply pipe
500: second heat exchanger 600: third heat exchanger
700: thickener

Claims (12)

delete delete delete A main body having an inlet through which a noxious gas containing a volatile organic compound flows;
A combustion oxidizing unit provided inside the main body, for burning the noxious gas introduced from the inlet and performing primary decomposition;
A catalytic oxidizing part provided at a downstream end of the combustion oxidizing part and performing a secondary decomposition by catalytic oxidation of a noxious gas decomposed first in the combustion oxidizing part;
A temperature filter which is provided between the combustion oxidizing unit and the catalytic oxidizing unit and uniformly diffuses the temperature of the noxious gas heated by the noxious gas discharged from the combustion oxidizing unit into the catalytic oxidizing unit,
A first heat exchanger provided at a downstream end of the catalytic oxidizer to preheat the noxious gas introduced into the inlet using the heat of the clean gas discharged from the catalytic oxidizer;
A first preheating gas supply pipe communicating the first heat exchange unit and the inlet; And
And a second heat exchanger provided between the temperature filter and the catalytic oxidizer to preheat the noxious gas flowing into the inlet using the heat of the noxious gas discharged from the combustion oxidizer. Oxidizing device.
The method of claim 4,
A second preheating gas supply pipe communicating the first heat exchange unit and the second heat exchange unit; And
Further comprising: a third preheating gas supply line communicating the second heat exchange unit and the inlet.
The method of claim 5,
Further comprising a concentrator provided at a front end of the first heat exchanger and configured to adsorb and concentrate the noxious gas introduced from the outside.
The method of claim 6,
Further comprising a third heat exchanger provided at a downstream end of the first heat exchanger and preheating external air supplied to the concentrator using the heat of the clean gas discharged from the first heat exchanger, Device.
The method of claim 7,
A fourth preheating gas supply pipe communicating the thickener and the third heat exchanger; And
Further comprising a condensed harmful gas supply pipe for communicating the concentrator and the first heat exchanging unit,
The method of claim 8,
Wherein the temperature filter is arranged to be oriented perpendicular to the flow of the noxious gas.
The method of claim 9,
Wherein the temperature filter comprises a plurality of unit cells constituting a porous lattice or a honeycomb structure.
The method of claim 10,
The temperature filter may be selected from the group consisting of alumina, silica, titania, zirconia, magnesia, silica-alumina, silica-zirconia, titania-zirconia, titania-silica, alumina-titania, alumina-zirconia, silicon carbide, And a mixture thereof.
The method of claim 11,
Wherein the temperature filter has a hole formed therein, the hole passing through the center of the upper surface or the left and right surfaces.

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