KR102641549B1 - The regenerative catalytic oxidizer - Google Patents

Abstract

The present invention provides a gas supply unit that supplies harmful gas, a plurality of rooms that receive harmful gas from the gas supply unit, a gas discharge unit that discharges exhaust gas from the plurality of rooms, a burner disposed inside the room to heat the gas, and a plurality of rooms. By including a catalyst unit disposed between rooms, installation and maintenance costs can be reduced.

Description

Regenerative catalytic oxidation device {THE REGENERATIVE CATALYTIC OXIDIZER}

The present invention relates to a thermal storage catalytic oxidation device, and more specifically, to a thermal storage catalytic oxidation device that can reduce installation and maintenance costs.

A regenerative combustion oxidation device is a device that incinerates and removes volatile organic compounds and odorous gases. Conventional combustion oxidation devices use a burner to combust organic compounds at a high temperature of about 800 degrees Celsius or more. Therefore, there is an increase in fuel costs during initial temperature increase and the burden of high temperature operation.

Among conventional combustion oxidation devices, there is a catalytic oxidation device using a catalyst. The catalytic oxidation device can combust organic compounds at about 350 to 400 degrees Celsius through a catalyst. Therefore, although the combustion temperature is relatively low, the heat recovery function is poor, fuel costs are high, and installation costs are high due to the use of expensive catalysts.

Meanwhile, a technology that applies the advantages of a regenerative combustion oxidation device and a catalytic oxidation device is a regenerative catalytic oxidation device. In the case of a regenerative catalytic oxidation device, the combustion temperature can range from a low temperature of around 200 degrees Celsius to a high temperature of around 1000 degrees Celsius depending on the conditions of the material and catalyst to be treated. However, when a conventional regenerative catalytic oxidation device includes a plurality of rooms (space for combustion), a catalyst must be placed in each room. Therefore, the initial investment cost and the catalyst cost after use are high.

One embodiment of the present invention aims to provide a thermal storage type catalytic oxidation device that can reduce installation and maintenance costs by disposing an expensive catalyst between a plurality of rooms rather than installing it in each room.

In order to achieve the above-described object, the thermal storage type catalytic oxidation device according to an embodiment of the present invention includes a gas supply unit that supplies harmful gases, a plurality of rooms that receive harmful gases from the gas supply unit and include a heat storage member, and a plurality of rooms. It is characterized by comprising a gas discharge unit that discharges exhaust gas from the room, a burner disposed inside the room to heat the gas, a heat storage member disposed inside the room, and a catalyst portion disposed between the plurality of rooms.

According to the present invention, installation costs can be reduced by reducing the number of expensive catalysts compared to a conventional regenerative catalytic oxidation device.

In addition, the heat storage function can be applied to reduce fuel costs compared to catalytic oxidation.

1 is a diagram schematically showing a thermal storage type catalytic oxidation device according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining another operation of the thermal storage type catalytic oxidation device shown in FIG. 1.
FIG. 3 is a diagram illustrating another embodiment of the thermal storage type catalytic oxidation device shown in FIG. 1.
Figures 4 and 5 are diagrams for explaining other operations of the thermal storage type catalytic oxidation device shown in Figure 3.
FIG. 6 is a diagram illustrating another embodiment of the thermal storage type catalytic oxidation device shown in FIG. 3.
Figure 7 is a diagram showing a thermal storage type catalytic oxidation device using a concentrator according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, the embodiments described below are provided for illustrative purposes only to facilitate a clear understanding of the present invention, and do not limit the scope of the present invention.

The shape, size, ratio, angle, number, etc. shown in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown in the drawings. Like components may be referred to by the same reference numerals throughout the specification. In describing the present invention, if it is determined that a detailed description of related known technology may unnecessarily obscure the gist of the present invention, the detailed description is omitted.

When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless the expression 'only' is used. If a component is expressed in the singular, the plural is included unless specifically stated. In addition, when interpreting components, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, one or more other parts may be placed between the two parts, unless the expression 'directly' is used.

Spatially relative terms such as “below, beneath,” “lower,” “above,” and “upper” refer to one element or component as shown in the drawing. It can be used to easily describe the correlation with other elements or components. Spatially relative terms should be understood as terms that include different directions of the element during use or operation in addition to the direction shown in the drawings. For example, if an element shown in the drawings is turned over, an element described as “below” or “beneath” another element may be placed “above” the other element. Accordingly, the illustrative term “down” may include both downward and upward directions. Likewise, the illustrative terms “up” or “on” can include both up and down directions.

In the case of a description of a temporal relationship, for example, if a temporal relationship is described as 'after', 'successfully after', 'after', 'before', etc., 'immediately' or 'directly' Unless the expression is used, non-continuous cases may also be included.

Although first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, the first component mentioned below may also be the second component within the technical spirit of the present invention.

The term “at least one” should be understood to include all possible combinations from one or more related items. For example, “at least one of the first item, the second item, and the third item” means each of the first item, the second item, or the third item, as well as two of the first item, the second item, and the third item. It can mean a combination of all items that can be presented from more than one.

Each feature of the various embodiments of the present invention can be partially or fully combined or combined with each other, various technical interconnections and operations are possible, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship. It may be possible.

FIG. 1 is a diagram schematically showing a thermal storage type catalytic oxidation device 1 according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining another operation of the thermal storage type catalytic oxidation device 1 shown in FIG. 1. .

Referring to Figures 1 and 2, the thermal storage type catalytic oxidation device 1 according to an embodiment of the present invention is intended to reduce energy and installation costs for combustion of hazardous substances. To this end, the thermal storage type catalytic oxidation device 1 according to an embodiment of the present invention includes a gas supply unit 10, a plurality of rooms 20 including a heat storage member, a gas discharge unit 30, a burner 40, and a catalyst. Includes part 50.

The gas supply unit 10 supplies harmful gas to the plurality of rooms 20. The harmful gas supplied from the gas supply unit 10 may have a temperature of about 20 degrees Celsius (atmospheric temperature). The plurality of rooms 20 may define a space for combustion of harmful gases. The gas discharge unit 30 discharges exhaust gas discharged after oxidation from the plurality of rooms 20. The burner 40 is disposed inside the room 20 and heats the harmful gas supplied from the gas supply unit 10. The catalyst unit 50 is disposed between the plurality of rooms 20. As a result, fewer catalyst units 50 can be installed than in the prior art in which expensive catalyst units 50 are installed in each room 20. In other words, harmful gases can be catalytically oxidized even with a small number of catalyst units 50. In addition, harmful gases can be burned at a relatively low temperature, and fuel costs can be reduced due to the heat storage function.

The plurality of rooms 20 may be arranged in plurality. In one embodiment, the plurality of rooms 20 may include a first room (A) and a second room (B). The burner 40 may include a first burner 400 and a second burner 410. The first burner 400 and the second burner 410 may be placed in the first room (A) and the second room (B), respectively. The gas supply unit 10 may open the first room (A) and close the second room (B). In this case, harmful gas may flow into the first room (A) and be discharged from the gas outlet 30 of the second room (B). Additionally, the gas supply unit 10 may close the first room (A) and open the second room (B). In this case, the harmful gas may flow into the second room (B) and be discharged from the gas outlet 30 of the first room (A).

Room 20 may include a chamber 200 and a heat storage member 210. Chamber 200 has an internal space. The heat storage member 210 may be disposed in the internal space of the chamber 200. The burner 40 may be disposed in the upper space of the heat storage member 210. Harmful gas flowing in from the gas supply unit 10 may flow into the upper space of the chamber 200 through the heat storage member 210. It may be heated by the burner 40 in the upper space of the chamber 200. Of course, the harmful gas may be heated by the heat storage member 210 that accumulates heat. The heat storage member 210 may be a ceramic member. The heat storage member 210 may have a honeycomb structure. The plurality of heat storage members 210 may be disposed in each of the plurality of rooms 20, corresponding to the plurality of rooms 20.

The catalyst unit 50 may include a connection chamber 500 and a catalyst member 510. The connection chamber 500 connects the plurality of rooms 20. That is, the connection chamber 500 can connect a plurality of rooms 20. Thereby, gas can flow from one of the plurality of rooms 20 to another. The catalyst member 510 may be disposed inside the connection chamber 500. The catalyst member 510 may include palladium, platinum, gold, ruthenium, rhodium, iridium, etc. The catalyst member 510 may have a honeycomb structure. The gas flowing into one of the plurality of rooms 20 is heated by the burner 40 and flows into another of the plurality of rooms 20. At this time, it may be catalytically oxidized while passing through the catalyst unit 50. Therefore, harmful gases can be oxidized at about 350 to 400 degrees Celsius, and the temperature can be changed depending on catalyst characteristics. As a result, energy consumed in the burner 40 can be reduced. Since the catalyst unit 50 is arranged in a smaller number than the number of rooms 20, installation costs, fuel maintenance costs, etc. can be reduced.

FIG. 3 is a diagram showing another embodiment of the thermal storage type catalytic oxidation device 1 shown in FIG. 1, and FIGS. 4 and 5 are diagrams for explaining another operation of the thermal storage type catalytic oxidation device 1 shown in FIG. 3. am.

Referring to FIGS. 3 to 5 , in one embodiment, the plurality of rooms 20 may include a first room (A), a second room (B), and a third room (C). The catalyst unit 50 may connect the first room (A) and the second room (B). Additionally, the catalyst unit 50 may connect the second room (B) and the third room (C).

The gas supply unit 10 may include a supply pipe 100 and a supply valve 110. The supply pipe 100 is connected to each of the plurality of rooms 20. The supply valve 110 may be disposed in the supply pipe 100. Harmful gas may selectively flow into the plurality of rooms 20 by opening and closing the supply valve 110. Meanwhile, a purge unit 70 may be connected to the gas supply unit 10. That is, the purge unit 70 is connected to the supply pipe 100 and can selectively supply purge gas to a plurality of rooms 20.

The gas discharge unit 30 may include a discharge pipe 300 and a discharge valve 310. The discharge pipe 300 is connected to each of the plurality of rooms 20. The discharge valve 310 may be disposed in the discharge pipe 300. Combustion gas may be discharged from the plurality of rooms 20 by opening and closing the discharge valve 310.

Referring to FIG. 3 to examine the operation of the thermal storage type catalytic oxidation device 1, harmful gas flows into the first room A when the supply valve 110 connected to the first room A is opened. Harmful gas can be heated by the first burner 400 disposed in the first room (A). The harmful gas flows from the first room (A) to the second room (B) through the catalyst unit (50). At this time, the harmful gas may be oxidized and changed into water and carbon dioxide while passing through the catalyst unit 50. That is, the harmful gas is oxidized in the catalyst unit 50 and changed into combustion gas. Combustion gas is discharged through the gas discharge part 30 of the second room (B). At this time, purge gas is supplied to the third room (C) from the purge unit 70 of the third room (C).

Referring to FIG. 4, the supply valves 110 of the first room (A) and the third room (C) are closed, and the supply valve 110 of the second room (B) is opened. Additionally, the discharge valves 310 of the first room (A) and the second room (B) are closed, and the discharge valve 110 of the third room (C) is opened. Therefore, the harmful gas flows into the second room (B). The harmful gas flows to the third room (C) through the catalyst unit (50). The harmful gas can be heated to 350 to 400 degrees Celsius by the burner 410 disposed in the second room (B). The harmful gas is oxidized in the catalyst unit 50 and becomes combustion gas. Combustion gas is discharged through the heat storage member 210 in the third room (C). The heat of the combustion gas is delivered to the heat storage member 210, and the combustion gas can be discharged at a temperature of about 50 degrees Celsius or less. Meanwhile, the purge gas flows into the first room (A) through the purge part 70 of the first room (A) and is discharged together with the combustion gas into the third room (C).

Referring to Figure 5, the supply valves 110 of the first room (A) and the second room (B) are closed, and the supply valve 110 of the third room (C) is opened. Additionally, the discharge valve 310 of the first room (A) is opened, and the discharge valves 310 of the second room (B) and the third room (C) are closed. Therefore, the harmful gas flows into the third room (C). The harmful gas flows into the second room (B) and is then heated by the second burner (410). The heated harmful gas flows into the first room (A) through the catalyst unit (50). At this time, the harmful gas is oxidized through the catalyst unit 50 and becomes combustion gas. Combustion gas is discharged through the discharge valve 310 in the first room (A). Meanwhile, the purge gas flows into the second room (B) through the purge part 70 of the second room (B) and is discharged together with the combustion gas through the discharge valve 310 of the first room (A).

The thermal storage type catalytic oxidation device 1 according to an embodiment of the present invention may further include a control unit 60. The control unit 60 can control the operation of the thermal storage type catalytic oxidation device 1. In one embodiment, the control unit 60 may control the opening and closing of the supply valve 110 and the discharge valve 310. The control unit 60 controls the supply valve 110 and the discharge valve 310 so that the harmful gas supplied from the gas supply unit 10 flows sequentially through the burner 40 and the catalyst unit 50. As a result, the harmful gas can be heated to about 350 to 400 degrees Celsius in the burner 40 and then catalytically oxidized in the catalyst unit 50. Additionally, the control unit 60 can control the operation of the purge unit 70.

FIG. 6 is a diagram showing another embodiment of the thermal storage catalytic oxidation device 1 shown in FIG. 3, and FIG. 7 is a diagram showing a thermal storage catalytic oxidation device using a concentrator 120 according to an embodiment of the present invention. am.

Referring to FIG. 6, the plurality of rooms 20 may include a first room 20-1 to an nth room 20-n. Additionally, the catalyst section 50 may include a first catalyst section 50-1 to an n-1th catalyst section 50-n-1. The first catalyst unit 50-1 to the n-1th catalyst unit 50-n-1 may be disposed between the first room 20-1 to the nth room 20-n. Additionally, the burner 40 may include a first burner 40-1 to an n-1th burner 40-n-1. Here, n is a natural number of 3 or more. The plurality of burners 40 may be disposed in the remaining rooms except for one of the plurality of rooms. The control unit 60 can control the operations of the gas supply unit 10, the gas discharge unit 30, and the purge unit. Therefore, the harmful gas can flow to the catalyst unit 50 after being heated by the burner 40. Thereby, installation costs and fuel maintenance costs can be reduced.

Referring to FIG. 7, the gas supply unit 10 according to an embodiment of the present invention may further include a concentrator 120. The concentrator 120 can concentrate harmful gases. Concentrator 120 may be zeolite.

Although the invention made by the present inventor has been described in detail according to the above-mentioned embodiments, the present invention is not limited to the above-described embodiments and, of course, can be changed in various ways without departing from the gist of the invention.

1: Regenerative catalytic oxidation device
10: gas supply unit
100: supply pipe
110: Supply valve
120: Concentrator
20: Revenge Room
200: chamber
210: heat storage member
30: gas outlet
300: discharge pipe
310: discharge valve
40: burner
400: 1st burner
410: 2nd burner
50: catalyst unit
500: Connection chamber
510: Catalyst member
60: control unit
70: control unit

Claims (7)

A gas supply unit that supplies harmful gases;
A gas discharge unit that discharges exhaust gas;
A first room including a heat storage member and connected to a gas supply unit and a gas discharge unit;
a second room including a heat storage member and connected to a gas supply unit and a gas discharge unit;
a third room including a heat storage member and connected to a gas supply unit and a gas discharge unit;
A first burner placed in the first room;
A second burner placed in the second room;
a catalyst section disposed between the first room and the second room, and disposed between the second room and the third room; and
It includes a control unit that controls the operation of the gas supply unit and the gas discharge unit,
When supplying harmful gas to a third room without a burner, the control unit connects the first room and the second room after the harmful gas flows from the third room to the second room and is heated by the second burner in the second room. A regenerative catalytic oxidation device that controls the gas supply section and the gas discharge section so that it is oxidized through the catalyst section, becomes combustion gas, and flows to the first room, and the combustion gas is discharged from the first room to the gas discharge section. According to claim 1,
The gas supply unit includes a plurality of supply pipes connected to each of the first room, the second room, and the third room, and a plurality of supply valves that open and close each of the supply pipes,
The gas discharge unit includes discharge pipes connected to each of the first room, second room, and third room, and a plurality of discharge valves that open and close each of the discharge pipes,
When supplying harmful gas to the third room without a burner, the control unit closes the supply valve of the first room and the supply valve of the second room, opens the supply valve of the third room and the discharge valve of the first room, and discharges the second room. A regenerative catalytic oxidation device that controls the opening and closing of the supply valves and the opening and closing of the discharge valves so that the valve and the third discharge valve are closed. According to claim 1,
It includes a plurality of purge units that supply purge gas to the first room, second room, and third room,
When harmful gas is supplied to the third room without a burner, the control unit controls the operation of the purge unit so that the purge gas flows into the second room through the purge unit of the second room. A gas supply unit that supplies harmful gases;
A plurality of rooms receiving harmful gas from a gas supply unit;
A gas discharge unit that discharges exhaust gas from a plurality of rooms;
A burner placed inside the room to heat gas;
A heat storage member disposed inside the room; and
It includes a catalyst unit disposed between a plurality of rooms,
The plurality of rooms includes the first to nth rooms,
The catalyst section includes a first to n-1th catalyst section disposed between the first to nth rooms,
The burner includes a first burner to an n-1 burner disposed in all rooms except one of the plurality of rooms,
Here, n is a natural number of 3 or more. A regenerative catalytic oxidation device. According to claim 4,
The gas supply unit includes a supply pipe connected to each of the plurality of rooms, and a supply valve that opens and closes the supply pipe,
The gas discharge unit includes a discharge pipe connected to each of the plurality of rooms, and a discharge valve that opens and closes the discharge pipe,
It further includes a control unit that regulates the opening and closing of the supply valve and discharge valve,
The control unit is a regenerative catalytic oxidation device that controls the gas flowing in from the supply pipe to flow sequentially through the burner and catalyst section and then discharged to the discharge pipe. According to claim 1 or 4,
A thermal storage type catalytic oxidation device in which the gas supply unit further includes a concentrator for concentrating harmful gases. delete

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