A RCO catalytic combustion device

Abstract

The present invention discloses a RCO catalytic combustion device, comprising a combustion chamber, a first heat storage chamber, a second heat storage chamber, a first air inlet pipe, a second air inlet pipe, an exhaust gas pipe, an exhaust pipe and a chimney, wherein the first heat storage chamber and the second heat storage chamber are respectively connected to the combustion chamber, and a catalytic bed is provided at the connection between the first heat storage chamber and the second heat storage chamber and the combustion chamber, the opening end of the first air inlet pipe is connected to an external air source, the combustion chamber is connected to the first air inlet pipe through a first pipe, the opening end of the second air inlet pipe is connected to an external oxygen source, the opening end of the second air inlet pipe is connected to an external exhaust gas source, the first heat storage chamber and the second heat storage chamber are respectively connected to the exhaust gas pipe through a fourth pipe, the fourth pipe is provided with a fourth valve, the opening end of the exhaust pipe is connected to the chimney, and the combustion chamber is connected to the exhaust pipe through a fifth pipe. The present invention provides a RCO catalytic combustion device.

Description

Technical Field

[0001] The present invention relates to the field of organic waste gas treatment, and more specifically, to a RCO catalytic combustion device. Background Art

[0002] Regenerative catalytic oxidizers (RCO) are developed on the basis of regenerative thermal oxidizers (RTO). The biggest difference between the two is the oxidation temperature. RTO requires a high temperature of more than 800°C, which will produce NO. X Secondary pollutants; RCO only requires a temperature between 300-500℃, so RCO is more energy-efficient, safer, and does not produce NO at all X .

[0003] RCO heat storage catalytic combustion is one of the combustion treatment technologies. Its principle is to completely oxidize pollutants under the action of catalysts at a certain temperature, and the removal efficiency can reach more than 99%. This technology uses a catalytic chamber with multiple beds of heat storage materials to switch between heat storage and catalytic oxidation to greatly reduce heat loss. The main difference between direct combustion and catalytic combustion lies in the type and efficiency of waste heat recovery. Generally speaking: catalytic combustion is 30-50%, direct incineration is 50-70%, and RCO is as high as more than 90%. Summary of the invention

[0004] The object of the present invention is to provide a RCO catalytic combustion device.

[0005] In order to achieve these purposes and other advantages according to the present invention, a RCO catalytic combustion device is provided, comprising a combustion chamber, a first heat storage chamber, a second heat storage chamber, a first air intake pipe, a second air intake pipe, an exhaust gas pipe, an air outlet pipe and a chimney, wherein the first heat storage chamber and the second heat storage chamber are respectively connected to the combustion chamber, and a catalytic bed is provided at the connection between the first heat storage chamber and the second heat storage chamber and the combustion chamber, the first air intake pipe, the second air intake pipe, the exhaust gas pipe and the air outlet pipe are all hollow inside and open at one end, the open end of the first air intake pipe is connected to an external air source, the combustion chamber is connected to the first air intake pipe through a first pipe, and a first valve is provided on the first pipe, and the open end of the second air intake pipe is connected to an external oxygen source, The second air intake duct is connected to the portion of the first duct close to the combustion chamber through a second duct, the second duct is sequentially connected to a second valve, a mixing chamber and a first fan, the mixing chamber is connected to the corresponding portion of the first duct close to the first air intake duct through a third duct, the open end of the second air intake duct is connected to an external exhaust gas source, the third duct is provided with a third valve, the first heat storage chamber and the second heat storage chamber are respectively connected to the exhaust gas duct through a fourth duct, the exhaust gas duct is connected to a first filtering mechanism, the fourth duct is provided with a fourth valve, the open end of the outlet duct is connected to the chimney, the combustion chamber is connected to the outlet duct through a fifth duct, and the fifth duct is provided with a fifth valve.

[0006] Preferably, in the RCO catalytic combustion device, the mixing chamber includes a casing, a first electromagnetic flow valve, a second electromagnetic flow valve and a controller, the first electromagnetic flow valve and the second electromagnetic flow valve are respectively arranged on the second pipe and the third pipe to control the flow rate of gas entering the mixing chamber from the second pipe corresponding to the mixing chamber and the flow rate of gas entering the mixing chamber from the third pipe, and the first electromagnetic flow valve and the second electromagnetic flow valve are respectively electrically connected to the controller.

[0007] Preferably, in the RCO catalytic combustion device, the first filtering mechanism is an electrostatic precipitator.

[0008] Preferably, in the RCO catalytic combustion device, the open end of the gas outlet pipe is connected to the chimney through a second filtering mechanism.

[0009] Preferably, in the RCO catalytic combustion device, a second fan is further connected between the second filtering mechanism and the chimney.

[0010] Preferably, in the RCO catalytic combustion device, the second filtering mechanism is an electrostatic precipitator.

[0011] Preferably, the RCO catalytic combustion device further comprises a compensating gas inlet pipeline, one end of which is connected to an external compensating gas source, and the other end of which is connected to the combustion chamber.

[0012] The present invention adds oxygen to the air introduced into the heat storage chamber, and can adjust the oxygen concentration of the gas introduced into the heat storage chamber online according to the combustion conditions in the combustion chamber to meet actual needs; in addition, the present solution can also introduce a compensating gas such as natural gas into the combustion chamber to increase the temperature of the combustion chamber when the combustion in the combustion chamber is not sufficient, so that the combustible gas in the exhaust gas can be fully burned.

[0013] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an RCO catalytic combustion device described in the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0016] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] like Figure 1As shown, an embodiment of the present invention provides a RCO catalytic combustion device, including a combustion chamber 1, a first heat storage chamber 2, a second heat storage chamber 3, a first air intake pipe 4, a second air intake pipe 5, an exhaust pipe 6, an exhaust pipe 7 and a chimney 8, the first heat storage chamber 2 and the second heat storage chamber 3 are respectively connected to the combustion chamber 1, and the first heat storage chamber 2 and the second heat storage chamber 3 are connected to the combustion chamber 1. A catalytic bed is provided at the connection between the first heat storage chamber 2 and the second heat storage chamber 3 and the combustion chamber 1, the first air intake pipe 4, the second air intake pipe 5, the exhaust pipe 6 and the exhaust pipe 7 are all hollow inside and open at one end, the open end of the first air intake pipe 4 is connected to an external air source, the combustion chamber 1 is connected to the first air intake pipe 4 through a first pipe 9, and the first pipe 9 is provided with a first valve 10, the open end of the second air intake pipe 5 is connected to an external oxygen source, and the second air intake pipe 5 is connected to the external oxygen source through a second pipe The first heat storage chamber 2 and the second heat storage chamber 3 are connected to the exhaust gas pipe 6 through a fourth pipe 17, respectively. The exhaust gas pipe 6 is connected to a first filtering mechanism 22. The fourth pipe 17 is provided with a fourth valve 18. The open end of the exhaust pipe 7 is connected to the chimney 8. The combustion chamber 1 is connected to the exhaust pipe 7 through a fifth pipe 19, and the fifth pipe 19 is provided with a fifth valve.

[0018] In this embodiment, a catalytic bed is provided between the first regenerator 2 and the combustion chamber 1, and between the second regenerator 3 and the combustion chamber 1, respectively. Air provided by an external air source enters the first air intake pipe 4, and then enters the combustion chamber 1 through the first pipe 9. Exhaust gas provided by an external exhaust gas source enters the exhaust pipe 6, and then enters the first regenerator 2 or the second regenerator 3 through the corresponding fourth pipe 17. After the exhaust gas and air are evenly mixed in the first regenerator 2 or the second regenerator 3, they are preheated by the first regenerator 2 or the second regenerator 3, and then pass through the corresponding catalytic bed, enter the combustion chamber 1 after being catalyzed by the catalyst, and start to burn after mixing with the air, releasing Heat is released, and the exhaust gas after combustion is discharged into the chimney 8 through the fifth pipe 19; when the oxygen concentration of the gas in the first air intake pipe 4 is insufficient, the first valve 10 on the first pipe 9 is closed, and the second valve 12 on the second pipe 11 and the third valve 16 on the third pipe 15 are opened. At this time, oxygen or oxygen-enriched air provided by the external oxygen source enters the second pipe 11 from the second air intake pipe 5, and is mixed with the air in the first pipe 9 in the mixing chamber 13, and then the mixed gas in the mixing chamber 13 is sent to the combustion chamber 1 through the first fan 14 to increase the oxygen concentration in the combustion chamber 1 and improve the combustion efficiency in the combustion chamber 1.

[0019] Preferably, in the RCO catalytic combustion device, the mixing chamber 13 includes a housing, a first electromagnetic flow valve 20, a second electromagnetic flow valve 21 and a controller, the first electromagnetic flow valve 20 and the second electromagnetic flow valve 21 are respectively arranged on the second pipeline 11 and the third pipeline 15 to control the flow rate of gas entering the mixing chamber 13 from the second pipeline 11 and the flow rate of gas entering the mixing chamber 13 from the third pipeline 15, and the first electromagnetic flow valve 20 and the second electromagnetic flow valve 21 are respectively electrically connected to the controller.

[0020] In this embodiment, the flow rate of gas entering the mixing chamber 13 in the second pipe 11 and the flow rate of gas entering the mixing chamber 13 in the third pipe 15 are respectively obtained through the first electromagnetic flow valve 20 and the second electromagnetic flow valve 21, and the oxygen concentration in the oxygen or oxygen-enriched air provided by the external exhaust gas source connected to the second intake pipe 5 is obtained in advance. According to the required oxygen concentration in the combustion chamber 1, the flow rates of the first electromagnetic flow valve 20 and the second electromagnetic flow valve 21 are adjusted by the controller to adjust the oxygen concentration in the gas entering the combustion chamber 1 to the required concentration.

[0021] Preferably, as another embodiment of the present invention, the first filtering mechanism 22 is an electrostatic precipitator.

[0022] Preferably, as another embodiment of the present invention, the open end of the air outlet pipe 7 is connected to the chimney 8 through a second filtering mechanism 23 .

[0023] Preferably, as another embodiment of the present invention, a second fan 24 is further connected between the second filtering mechanism 23 and the chimney 8 .

[0024] Preferably, as another embodiment of the present invention, the second filtering mechanism 23 is an electrostatic precipitator.

[0025] Preferably, as another embodiment of the present invention, it further comprises a compensating gas intake pipe 25 , one end of the compensating gas intake pipe 25 is connected to an external compensating gas source, and the other end thereof is connected to the combustion chamber 1 .

[0026] In this embodiment, when the combustion efficiency in the combustion chamber 1 is not enough, a compensating gas such as natural gas is provided to the combustion chamber 1 through the compensating gas intake pipe 25. The temperature in the combustion chamber 1 is increased by the combustion of the compensating gas, which drives the gas in the combustion chamber 1 to fully burn, thereby improving the efficiency of the exhaust gas combustion in the combustion chamber 1.

[0027] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A RCO catalytic combustion device, characterized in that: The invention comprises a combustion chamber (1), a first heat storage chamber (2), a second heat storage chamber (3), a first air intake pipe (4), a second air intake pipe (5), an exhaust pipe (6), an exhaust pipe (7) and a chimney (8), wherein the first heat storage chamber (2) and the second heat storage chamber (3) are respectively connected to the combustion chamber (1), and a catalytic bed is provided at the connection between the first heat storage chamber (2) and the second heat storage chamber (3) and the combustion chamber (1); the first air intake pipe (4), the second air intake pipe (5), the exhaust pipe (6) and the exhaust pipe (7) are all hollow inside and open at one end; the open end of the first air intake pipe (4) is connected to an external air source. The combustion chamber (1) is connected to the first air intake pipe (4) through a first pipe (9), and the first pipe (9) is provided with a first valve (10). The open end of the second air intake pipe (5) is connected to an external oxygen source. The second air intake pipe (5) is connected to a portion of the first pipe (9) close to the combustion chamber (1) through a second pipe (11). The second pipe (11) is connected in sequence to a second valve (12), a mixing chamber (13) and a first fan (14). The mixing chamber (13) is connected to a corresponding portion of the first pipe (9) close to the first air intake pipe through a third pipe (15). The third pipe (15) is provided with a third valve (16), the open end of the second air inlet pipe (5) is connected to an external exhaust gas source, the first heat storage chamber (2) and the second heat storage chamber (3) are respectively connected to the exhaust gas pipe (6) through a fourth pipe (17), the exhaust gas pipe (6) is connected to a first filtering mechanism (22), the fourth pipe (17) is provided with a fourth valve (18), the open end of the exhaust pipe (7) is connected to the chimney (8), the combustion chamber (1) is connected to the exhaust pipe (7) through a fifth pipe (19), and the fifth pipe (19 ), the mixing chamber (13) comprises a housing, a first electromagnetic flow valve (20), a second electromagnetic flow valve (21) and a controller, the first electromagnetic flow valve (20) and the second electromagnetic flow valve (21) being respectively arranged on the second pipe (11) and the third pipe (15) to control the flow rate of gas entering the mixing chamber (13) from the second pipe (11) corresponding to the mixing chamber (13) and the flow rate of gas entering the mixing chamber (13) from the third pipe (15), the first electromagnetic flow valve (20) and the second electromagnetic flow valve (21) being respectively electrically connected to the controller.

2. A RCO catalytic combustion device as claimed in claim 1, characterized in that: The first filtering mechanism (22) is an electrostatic precipitator.

3. The RCO catalytic combustion device according to claim 1, characterized in that: The open end of the air outlet pipe (7) is connected to the chimney (8) via a second filtering mechanism (23).

4. A RCO catalytic combustion device as claimed in claim 3, characterized in that: A second fan (24) is also connected between the second filtering mechanism (23) and the chimney (8).

5. A RCO catalytic combustion device as claimed in claim 4, characterized in that: The second filtering mechanism (23) is an electrostatic precipitator.

6. A RCO catalytic combustion device according to any one of claims 1 to 5, characterized in that: It also comprises a compensating gas intake pipeline (25), one end of which is connected to an external compensating gas source, and the other end of which is connected to the combustion chamber (1).

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