Three-bed regenerative incineration rto apparatus with auxiliary combustion structure

Abstract

The utility model relates to waste gas treatment equipment technical field especially has the three bed regenerative incineration RTO equipment of auxiliary combustion structure, including RTO body, fan, intake manifold, outlet manifold, purging main pipe, combustor, two premixing devices and two rectifier devices, RTO body includes combustion chamber and three regenerative chambers, every regenerative chamber is linked with intake manifold, outlet manifold and purging main pipe respectively, two premixing devices are respectively along the midline symmetry of RTO body and set on the both sides of combustion chamber top, two rectifier devices are respectively one -to -one and set on the side of two premixing devices towards combustion chamber. The three bed regenerative incineration RTO equipment with auxiliary combustion structure disclosed in the application, through the premixing device, air is introduced and mixed with waste gas, the mixing effect of air and waste gas is better, and directional airflow is formed by combining the rectifier device, thereby improving the combustion efficiency of waste gas.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and in particular to a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure. Background Technology

[0002] Regenerative Thermal Oxidizers (RTOs) heat the organic waste gas discharged from production processes through regenerative ceramics, rapidly raising its temperature. Within the furnace, the temperature reaches 680–1050°C due to combustion of fuel gas. At this high temperature, VOCs in the waste gas directly decompose into carbon dioxide and water vapor, forming odorless, high-temperature flue gas. This flue gas then flows through the cooler regenerative ceramics, where a significant amount of heat is transferred to the regenerative medium to heat the waste gas to be decomposed in the next cycle. The high-temperature flue gas itself experiences a substantial temperature drop, and after passing through a heat recovery system and exchanging heat with other media, its temperature is further reduced before finally being discharged into the atmosphere. However, existing RTO incineration equipment directly incinerates the waste gas upon entering the combustion chamber, resulting in low combustion efficiency.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure to solve the problem of low combustion efficiency of existing RTO equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure includes an RTO body, a blower, an inlet manifold, an outlet manifold, a purge manifold, a burner, two premixing devices, and two rectifiers. The RTO body includes a combustion chamber and three regenerative chambers. The three regenerative chambers are arranged sequentially at the bottom of the RTO body, and the combustion chamber is located at the top of the RTO body. All three regenerative chambers are connected to the combustion chamber. The blower is connected to one end of the inlet manifold. Each regenerative chamber is connected to the inlet manifold, the outlet manifold, and the purge manifold, respectively. The burner is located at the top of the combustion chamber. The two premixing devices are symmetrically arranged on both sides of the top of the combustion chamber along the centerline of the RTO body. The two rectifiers are respectively located on the side of the two premixing devices facing the combustion chamber.

[0007] As described above, in a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, each of the premixing devices includes a heat storage block, a blower, a turbulence-inducing mechanism, and multiple connecting pipe groups. The heat storage block is inclinedly disposed within the combustion chamber, forming an air cavity between the heat storage block and the combustion chamber. The blower is disposed on the RTO body and communicates with the air cavity. The multiple connecting pipe groups are sequentially arranged along the width direction of the heat storage block, and each connecting pipe group communicates with the air cavity and the combustion chamber. The turbulence-inducing mechanism is disposed on the side of the heat storage block facing away from the blower.

[0008] As described above, the three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure includes a plurality of guide plates in each of the premixing devices. The guide plates are sequentially and inclinedly arranged on the side of the regenerative block facing away from the blower, and the guide plates are respectively arranged below the gas outlet of the plurality of connecting pipe groups.

[0009] As described above, in the three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, a flame-retardant layer is provided on the side of the regenerative block facing away from the blower.

[0010] As described above, in the three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, the turbulence mechanism includes multiple turbulence columns, which are respectively disposed one-to-one on the outlet end of the multiple connecting pipe groups.

[0011] As described above, in the three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, each of the rectifier devices includes multiple rectifier plates, which are arranged in sequence at an inclination along the height direction of the RTO body, and each rectifier plate is inclined relative to the RTO body.

[0012] In the three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure described above, the cross-sectional shape of each of the rectifier plates is rhomboid.

[0013] Beneficial effects:

[0014] This utility model discloses a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, comprising an RTO body, a blower, an inlet manifold, an outlet manifold, a purge manifold, a burner, two premixing devices, and two rectifiers. The RTO body includes a combustion chamber and three regenerative chambers. Each regenerative chamber is connected to the inlet manifold, the outlet manifold, and the purge manifold, respectively. The three regenerative chambers respectively perform inlet, outlet, and purge operations. When performing the next combustion operation, the regenerative chamber that performed outlet operation in the previous combustion operation performs inlet operation, and the regenerative chamber that performed purge operation in the previous combustion operation performs outlet operation. During this incineration operation, purging is performed in a sequential cycle. The exhaust gas enters any of the regenerator chambers through the fan and the main intake pipe. After heat exchange in the regenerator chamber, the exhaust gas enters the combustion chamber. Air or oxygen is introduced into the combustion chamber through the premixing device, and the air and exhaust gas are impacted to create turbulence, ensuring thorough mixing. The mixed exhaust gas is then rectified by the rectifier to form a directional airflow, which is guided toward the burner. The burner triggers combustion of the exhaust gas. The three-bed regenerator incineration RTO equipment with auxiliary combustion structure disclosed in this application introduces air through the premixing device and mixes it with the exhaust gas, resulting in better mixing of air and exhaust gas. At the same time, the directional airflow formed by the rectifier improves the combustion efficiency of the exhaust gas. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the three-bed regenerative thermal oxidizer (RTO) provided by this utility model;

[0016] Figure 2 A cross-sectional view of the three-bed regenerative thermal oxidizer (RTO) provided by this utility model;

[0017] Reference numerals: 1. RTO body; 11. Combustion chamber; 12. Regenerator chamber; 2. Fan; 3. Inlet manifold; 4. Outlet manifold; 5. Purge manifold; 6. Burner; 7. Premixing device; 71. Regenerator block; 72. Blower; 73. Turbulence mechanism; 74. Connecting pipe assembly; 75. Air cavity; 76. Guide plate; 8. Rectifier. Detailed Implementation

[0018] This utility model provides a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples.

[0019] In the description of this utility model, it should be understood that the terms "top" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figure 1-2 As shown in the embodiment of this application, a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure is proposed, including an RTO body 1, a blower 2, an inlet manifold 3, an outlet manifold 4, a purge manifold 5, a burner 6, two premixing devices 7, and two rectifiers 8. The RTO body 1 includes a combustion chamber 11 and three regenerative chambers 12. The three regenerative chambers 12 are arranged sequentially on the bottom of the RTO body 1, and the combustion chamber 11 is located on the top of the RTO body 1. All three regenerative chambers 12 are... The fan 2 is connected to one end of the intake manifold 3 and the combustion chamber 11. Each heat storage chamber 12 is connected to the intake manifold 3, the exhaust manifold 4 and the purge manifold 5 respectively. The burner 6 is located on the top of the combustion chamber 11. Two premixing devices 7 are symmetrically arranged on both sides of the top of the combustion chamber 11 along the center line of the RTO body 1. Two rectifier devices 8 are respectively arranged on the side of the two premixing devices 7 facing the combustion chamber 11.

[0021] This utility model discloses a three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, comprising an RTO body 1, a blower 2, an inlet manifold 3, an outlet manifold 4, a purge manifold 5, a burner 6, two premixing devices 7, and two rectifiers 8. The RTO body 1 includes a combustion chamber 11 and three regenerative chambers 12. Each regenerative chamber 12 is connected to the inlet manifold 3, the outlet manifold 4, and the purge manifold 5, respectively. The three regenerative chambers 12 respectively perform inlet, outlet, and purge operations. When performing the next combustion operation, the regenerative chamber 12 that performed outlet operation in the previous combustion operation performs inlet operation in this combustion operation, and the regenerative chamber 12 that performed purge operation in the previous combustion operation performs outlet operation in this combustion operation. During the incineration operation, the heat chamber 12 is purged and circulated sequentially. The exhaust gas enters any of the heat storage chambers 12 through the fan 2 and the main air intake pipe 3. After heat exchange in the heat storage chamber 12, the exhaust gas enters the combustion chamber 11. Air or oxygen is introduced into the combustion chamber 11 through the premixing device 7, and the air and exhaust gas are impacted to generate turbulence, which makes the exhaust gas and air fully mixed. The mixed exhaust gas is rectified by the rectifier 8 to form a directional airflow and is guided toward the burner 6. The burner 6 triggers the combustion of the exhaust gas. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure disclosed in this application introduces air through the premixing device 7 and mixes it with the exhaust gas. The air-to-exhaust gas mixing effect is better. At the same time, the directional airflow formed by the rectifier 8 improves the combustion efficiency of the exhaust gas.

[0022] Each of the premixing devices 7 includes a heat storage block 71, a blower 72, a turbulence-inducing mechanism 73, and multiple connecting pipe assemblies 74. The heat storage block 71 is inclinedly disposed within the combustion chamber 11, forming an air cavity 75 between the heat storage block 71 and the combustion chamber 11. The blower 72 is disposed on the RTO body 1 and communicates with the air cavity 75. The multiple connecting pipe assemblies 74 are sequentially arranged along the width direction of the heat storage block 71, and each connecting pipe assembly 74 communicates with the air cavity 75 and the combustion chamber 11. The turbulence-inducing mechanism 73 is disposed on the side of the heat storage block 71 facing away from the blower 72. Each of the connecting pipe groups 74 includes multiple connecting channels arranged along the length of the heat storage block 71. The blower 72 blows air into the air chamber 75 and diffuses it along the air chamber 75, passing through the multiple connecting pipe groups 74 respectively. On the one hand, the heat storage block 71 fills the empty space at the top of the RTO body 1, gathering the exhaust gas toward the burner 6 and reducing the residual amount of exhaust gas. On the other hand, the heat storage block 71 absorbs part of the heat released by combustion and heats the air passing through the multiple connecting pipe groups 74, preventing the temperature of the exhaust gas from dropping and ensuring the complete combustion of the exhaust gas.

[0023] Each of the premixing devices 7 further includes a plurality of guide plates 76, which are sequentially and obliquely disposed on the side of the heat storage block 71 facing away from the blower 72. The plurality of guide plates 76 are respectively disposed below the outlet of the plurality of connecting pipe groups 74. On the one hand, they guide the exhaust gas toward the burner 6 to prevent the exhaust gas from rushing into the plurality of connecting pipe groups 74. On the other hand, they change the flow direction of the air and exhaust gas so that the air and exhaust gas mix relatively smoothly, avoiding the generation of large turbulence that affects the guidance of the exhaust gas.

[0024] The heat storage block 71 is provided with a flame-retardant layer on the side facing away from the blower 72 to prevent the flame from backfired towards the premixing device 7 during combustion, thereby avoiding safety accidents and ensuring the normal operation of the equipment.

[0025] The turbulence mechanism 73 includes multiple turbulence columns, which are respectively disposed on the outlet ends of the multiple connecting pipe groups 74. The convex surface is used to accelerate the airflow velocity and form turbulence, so that the air and exhaust gas are fully mixed.

[0026] Each of the rectifying devices 8 includes multiple rectifying plates, which are arranged obliquely along the height direction of the RTO body 1. Each rectifying plate is inclined relative to the RTO body 1 to rectify the mixed exhaust gas, making the airflow more stable and uniform, reducing airflow turbulence, creating favorable conditions for complete combustion, and improving combustion efficiency. The cross-sectional shape of each rectifying plate is rhomboid. The acute angle of the rhombus can separate the airflow and rectify it in the gap between two adjacent rectifying plates. The obtuse angle of the rhombus reduces airflow separation and vortex generation, reduces airflow pressure loss, thereby achieving airflow rectification and promoting more complete combustion.

[0027] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A three-bed regenerative thermal oxidizer (RTO) with an auxiliary combustion structure, characterized in that, The system includes an RTO body (1), a blower (2), an intake manifold (3), an exhaust manifold (4), a purge manifold (5), a burner (6), two premixing devices (7), and two rectifiers (8). The RTO body (1) includes a combustion chamber (11) and three heat storage chambers (12). The three heat storage chambers (12) are arranged sequentially at the bottom of the RTO body (1). The combustion chamber (11) is located at the top of the RTO body (1). All three heat storage chambers (12) are connected to the combustion chamber (11). The fan (2) is connected to one end of the intake manifold (3), and each of the heat storage chambers (12) is connected to the intake manifold (3), the exhaust manifold (4) and the purge manifold (5) respectively. The burner (6) is located on the top of the combustion chamber (11). The two premixing devices (7) are symmetrically arranged on both sides of the top of the combustion chamber (11) along the center line of the RTO body (1). The two rectifiers (8) are respectively arranged on the side of the two premixing devices (7) facing the combustion chamber (11).

2. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 1, characterized in that, Each of the premixing devices (7) includes a heat storage block (71), a blower (72), a turbulence mechanism (73), and a plurality of connecting pipe groups (74). The heat storage block (71) is inclinedly disposed in the combustion chamber (11), and a wind cavity (75) is formed between the heat storage block (71) and the combustion chamber (11). The blower (72) is disposed on the RTO body (1) and communicates with the wind cavity (75). The plurality of connecting pipe groups (74) are arranged sequentially along the width direction of the heat storage block (71). Each connecting pipe group (74) communicates with the wind cavity (75) and the combustion chamber (11) respectively. The turbulence mechanism (73) is disposed on the side of the heat storage block (71) facing away from the blower (72).

3. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 2, characterized in that, Each of the premixing devices (7) further includes multiple guide plates (76), which are sequentially inclined on the side of the heat storage block (71) facing away from the blower (72), and the multiple guide plates (76) are respectively located below the air outlet of the multiple connecting pipe groups (74).

4. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 2, characterized in that, The heat storage block (71) has a fire-resistant layer on the side facing away from the blower (72).

5. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 2, characterized in that, The turbulence mechanism (73) includes multiple turbulence columns, which are respectively disposed on the air outlets of the multiple connecting pipe groups (74).

6. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 1, characterized in that, Each of the rectifier devices (8) includes multiple rectifier plates, which are arranged in a series of inclined directions along the height of the RTO body (1), and each rectifier plate is inclined relative to the RTO body (1).

7. The three-bed regenerative thermal oxidizer (RTO) with auxiliary combustion structure according to claim 6, characterized in that, Each of the aforementioned rectifier plates has a rhomboid cross-sectional shape.

Images