Heat accumulator assembly and three-bed heat accumulating type incineration RTO equipment

Abstract

The utility model relates to the technical field of waste gas treatment equipment, in particular to a heat accumulator assembly and three-bed heat accumulating type incineration RTO (Regenerative Thermal Oxidation) equipment, which comprises a support frame, a flow equalizing layer, a main heat accumulating layer and a flow guide layer which are sequentially stacked from bottom to top, a plurality of communicating holes and a plurality of turbulent flow structures are arranged on the main heat storage layer, the communicating holes are sequentially arranged on the main heat storage layer in an orthogonal matrix mode, the turbulent flow structures are arranged in the communicating holes in a one-to-one correspondence mode, a plurality of flow guide holes are arranged on the flow guide layer in an orthogonal matrix mode, and the turbulent flow structures are arranged in the flow guide holes in a one-to-one correspondence mode. And the adjacent communicating holes and flow guide holes are arranged in a staggered manner. According to the heat accumulator assembly and the three-bed heat accumulating type incineration RTO equipment, collaborative optimization of directional flow guide, efficient heat recovery and flow equalization is achieved, waste gas is evenly distributed, local overheating or supercooling is reduced, and the edge effect is reduced so that the edge of the heat accumulator can be prevented from being blocked.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas treatment equipment, and in particular to a heat storage component and a three-bed regenerative thermal oxidizer (RTO) device. Background Technology

[0002] Regenerative Thermal Oxidizers (RTOs) heat the organic waste gas discharged from production processes through regenerative ceramics, rapidly raising its temperature to 680–1050°C within the furnace under the heating effect of combustion. 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 energy is transferred from the flue gas to the regenerator to heat the next cycle of organic waste gas to be decomposed. 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 furnaces typically use honeycomb ceramic regenerators in their regenerator chambers. In actual use, the high flow velocity at the center and low velocity at the edges of the regenerator lead to turbulence in the waste gas entering the combustion chamber and ash accumulation and blockage at the edges of the regenerator, affecting the normal operation of the equipment.

[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 heat storage body assembly and a three-bed regenerative thermal oxidizer (RTO) device to solve the problem of ash accumulation and blockage at the edges caused by the flow velocity difference in the existing heat storage body.

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

[0006] A heat storage assembly includes a support frame, a flow equalization layer, a main heat storage layer, and a flow guiding layer stacked sequentially from bottom to top. The flow equalization layer has an airflow dispersion structure. The main heat storage layer has multiple connecting holes and multiple turbulence structures. The multiple connecting holes are arranged in an orthogonal matrix on the main heat storage layer. The multiple turbulence structures are respectively disposed in the multiple connecting holes. The flow guiding layer has multiple flow guiding holes arranged in an orthogonal matrix. Adjacent connecting holes and flow guiding holes are staggered.

[0007] As described above, in a heat storage component, each of the turbulence structures includes a plurality of turbulence columns, which are arranged alternately along the height direction of the main heat storage layer, and each turbulence column is provided with a plurality of connecting holes located in the same row or column of the main heat storage layer.

[0008] In the heat storage assembly described above, each of the turbulence columns has an elliptical cross-sectional shape, and the major axis of each turbulence column is parallel to the height direction of the connecting hole.

[0009] In the heat storage assembly described above, each of the flow guide holes is a hexagonal spiral hole with a cross-sectional shape, and each of the flow guide holes has a chamfer at its inner corner.

[0010] As described above, in a heat storage assembly, the airflow dispersion structure includes a first cavity, a second cavity, and a third cavity. The pore sizes of the first cavity, the second cavity, and the third cavity are all different. There are multiple first pores, multiple second pores, and multiple third pores. These multiple first pores, multiple second pores, and multiple third pores are irregularly distributed on the flow equalization layer. The multiple first pores, multiple second pores, and multiple third pores are sequentially interconnected.

[0011] As described above, in a heat storage assembly, the edges below the flow equalization layer, the main heat storage layer, and the flow guiding layer are provided with protruding edges, and each of the protruding edges has an inclined surface on its inner side. The edges above the main heat storage layer and the flow equalization layer are provided with bevels, and the upper part of the support frame is provided with a plug-in groove.

[0012] In the heat storage assembly described above, the height ratio of the flow guiding layer, the main heat storage layer, and the flow equalization layer is 3:5:2.

[0013] This utility model also proposes a three-bed regenerative thermal oxidizer (RTO) device, including an RTO body, a blower, an inlet manifold, an outlet manifold, a purge manifold, a burner, and the regenerator assembly as described above. The RTO body includes a combustion chamber and three regenerator chambers. The regenerator assembly includes three regenerator chambers, which are arranged sequentially at the bottom of the RTO body. The combustion chamber is located at the top of the RTO body, and all three regenerator chambers are connected to the combustion chamber. The three regenerator assemblies are respectively located in the three regenerator chambers. The blower is connected to one end of the inlet manifold. Each regenerator 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.

[0014] Beneficial effects:

[0015] This utility model discloses a heat storage body assembly, comprising a support frame, a flow equalization layer, a main heat storage layer, and a flow guiding layer stacked sequentially from bottom to top. The flow equalization layer has an airflow dispersion structure, the main heat storage layer has multiple connecting holes and multiple turbulence structures, and the flow guiding layer has multiple flow guiding holes arranged in an orthogonal matrix. Adjacent connecting holes and flow guiding holes are staggered. The heat storage body assembly is installed in an RTO device via the support frame. Exhaust gas sequentially passes through the flow equalization layer, the main heat storage layer, and the flow guiding layer. The airflow dispersion structure disperses the exhaust gas before it enters the connecting holes, reducing local overheating. When the air is hot or cold, the turbulence structure blocks the passage of exhaust gas to a certain extent and forms turbulence, improving heat exchange efficiency. The exhaust gas passing through the connecting hole forms a directional airflow into the RTO device through the guide hole. The connecting hole and the guide hole are staggered to ensure airflow continuity and avoid sudden contraction or expansion of airflow caused by the difference in size between the connecting hole and the guide hole. The heat storage body component disclosed in this application realizes the synergistic optimization of directional flow guidance, efficient heat recovery and flow equalization, so that the exhaust gas can be evenly distributed, reducing local overheating or overcooling, and reducing edge effects to prevent blockage at the edge of the heat storage body. Attached Figure Description

[0016] Figure 1 Exploded view of the heat storage component provided by this utility model;

[0017] Figure 2 An exploded view of the heat storage component provided by this utility model from another angle;

[0018] Figure 3 A cross-sectional view of the RTO device provided by this utility model from the front view;

[0019] Reference numerals in the attached diagram: 1. Support frame; 2. Flow equalization layer; 21. Protruding edge; 22. Inclined surface; 23. Angled angle; 3. Main heat storage layer; 31. Connecting hole; 32. Turbulence structure; 4. Flow guide layer; 41. Flow guide hole; 5. RTO body; 51. Combustion chamber; 52. Heat storage chamber; 6. Fan; 7. Inlet manifold; 8. Outlet manifold; 9. Purge manifold; 10. Burner. Detailed Implementation

[0020] This utility model provides a regenerator assembly and a three-bed regenerable thermal oxidizer (RTO) device. 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 embodiments.

[0021] 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.

[0022] like Figure 1-3 As shown in the embodiment of this application, a heat storage body assembly is proposed, including a support frame 1, a flow equalization layer 2, a main heat storage layer 3, and a flow guiding layer 4 stacked sequentially from bottom to top. The flow equalization layer 2 is provided with an airflow dispersion structure. The main heat storage layer 3 is provided with a plurality of connecting holes 31 and a plurality of turbulence structures 32. The plurality of connecting holes 31 are arranged in an orthogonal matrix on the main heat storage layer 3, and the plurality of turbulence structures 32 are respectively provided in the plurality of connecting holes 31. The flow guiding layer 4 is provided with a plurality of flow guiding holes 41 arranged in an orthogonal matrix, and adjacent connecting holes 31 and flow guiding holes 41 are staggered.

[0023] This utility model discloses a heat storage body assembly, comprising a support frame 1, a flow equalization layer 2, a main heat storage layer 3, and a flow guiding layer 4 stacked sequentially from bottom to top. The flow equalization layer 2 has an airflow dispersion structure. The main heat storage layer 3 has multiple connecting holes 31 and multiple turbulence structures 32. The flow guiding layer 4 has multiple flow guiding holes 41 arranged in an orthogonal matrix, with adjacent connecting holes 31 and flow guiding holes 41 staggered. The heat storage body assembly is installed in an RTO device via the support frame 1. Exhaust gas passes sequentially through the flow equalization layer 2, the main heat storage layer 3, and the flow guiding layer 4. The airflow dispersion structure disperses the exhaust gas before it enters the connecting holes 31, reducing airflow. To minimize local overheating or overcooling, the turbulence structure 32 partially obstructs the passage of exhaust gas and creates turbulence, improving heat exchange efficiency. Exhaust gas passing through the connecting hole 31 flows into the RTO device through the guide hole 41 in a directional airflow. The connecting hole 31 and the guide hole 41 are staggered to ensure airflow continuity and prevent sudden contraction or expansion of airflow caused by the size difference between the connecting hole 31 and the guide hole 41. The heat storage body component disclosed in this application achieves synergistic optimization of directional flow guidance, efficient heat recovery, and flow equalization, enabling uniform gas distribution, reducing local overheating or overcooling, and reducing edge effects to prevent blockage at the edge of the heat storage body.

[0024] Each of the aforementioned turbulence structures 32 includes multiple turbulence columns, which are arranged alternately along the height direction of the main heat storage layer 3. Each of the turbulence columns is sequentially perforated by multiple connecting holes 31 located in the same row or column of the main heat storage layer 3, thereby reducing the occurrence of flow dead zones and improving the utilization rate of the heat storage body.

[0025] Each of the aforementioned turbulence columns has an elliptical cross-sectional shape, and the major axis of each turbulence column is parallel to the height direction of the connecting hole 31, maintaining high turbulence performance under low resistance and optimizing the temperature field distribution.

[0026] Each of the aforementioned guide holes 41 is a hexagonal spiral hole with a cross-sectional shape. Each of the aforementioned guide holes 41 has a chamfer at its inner corner. The spiral hole design guides the airflow to rotate, enhancing radial mixing. The chamfer design reduces airflow separation and ensures structural rigidity.

[0027] The airflow dispersion structure includes a first cavity, a second cavity, and a third cavity. The apertures of the first cavity, the second cavity, and the third cavity are all different. There are multiple first cavities, multiple second cavities, and multiple third cavities. These multiple first cavities, multiple second cavities, and multiple third cavities are irregularly distributed on the flow equalization layer 2. The multiple first cavities, multiple second cavities, and multiple third cavities are sequentially interconnected. The randomly distributed cavities break the laminar flow state of the airflow and promote uniform diffusion.

[0028] The flow equalization layer 2, the main heat storage layer 3 and the flow guiding layer 4 are provided with protruding edges 21 at their lower edges. Each protruding edge 21 has an inclined surface 22 on its inner side. The main heat storage layer 3 and the flow equalization layer 2 are provided with bevel angles 23 at their upper edges. The support frame 1 is provided with a plug-in groove 11 on its upper side. On the one hand, the plug-in structure facilitates the connection between the layers. On the other hand, it guides the airflow during air intake.

[0029] The height ratio of the flow guiding layer 4, the main heat storage layer 3, and the flow equalization layer 2 is 3:5:2, which maximizes the heat storage capacity and balances the airflow guiding and flow equalization performance.

[0030] A three-bed regenerative thermal oxidizer (RTO) includes an RTO body 5, a blower 6, an inlet manifold 7, an outlet manifold 8, a purge manifold 9, a burner 10, and a heat storage assembly as described above. The RTO body 5 includes a combustion chamber 51 and three heat storage chambers 52. The heat storage assembly includes three heat storage chambers 52 arranged sequentially on the bottom of the RTO body 5. The combustion chamber 51 is located on the top of the RTO body 5. All three heat storage chambers 52 are connected to the combustion chamber 51. The three heat storage assemblies are respectively arranged one-to-one in the three heat storage chambers 52. The blower 6 is connected to one end of the inlet manifold 7. Each heat storage chamber 52 is connected to the inlet manifold 7. The exhaust manifold 8 and the purge manifold 9 are connected. The burner 10 is located on the top of the combustion chamber 51. The three heat storage chambers 52 respectively perform air intake, air exhaust, and purge operations. When performing the next combustion operation, the heat storage chamber 52 that performed air exhaust in the previous combustion operation performs air intake in this combustion operation, the heat storage chamber 52 that performed purge in the previous combustion operation performs air exhaust in this combustion operation, and the heat storage chamber 52 that performed air intake in the previous combustion operation performs purge in this combustion operation. This cycle continues. The exhaust gas enters any of the heat storage chambers 52 through the fan 6 and the intake manifold 7 and passes through the corresponding heat storage body components, achieving synergistic optimization of directional flow guidance, efficient heat recovery, and flow equalization.

[0031] 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 heat storage component, characterized in that, The system includes a support frame (1), a flow equalization layer (2), a main heat storage layer (3), and a flow guide layer (4) stacked sequentially from bottom to top. The flow equalization layer (2) is provided with an airflow dispersion structure. The main heat storage layer (3) is provided with multiple connecting holes (31) and multiple turbulence structures (32). The multiple connecting holes (31) are arranged in an orthogonal matrix on the main heat storage layer (3). The multiple turbulence structures (32) are respectively provided in the multiple connecting holes (31). The flow guide layer (4) is provided with multiple flow guide holes (41) arranged in an orthogonal matrix. The adjacent connecting holes (31) and flow guide holes (41) are staggered.

2. A heat storage component according to claim 1, characterized in that, Each of the aforementioned turbulence structures (32) includes a plurality of turbulence columns, which are arranged alternately along the height direction of the main heat storage layer (3). Each of the aforementioned turbulence columns is provided with a plurality of connecting holes (31) located in the same row or column of the main heat storage layer (3).

3. A heat storage component according to claim 2, characterized in that, Each of the aforementioned turbulence columns has an elliptical cross-sectional shape, and the major axis of each of the aforementioned turbulence columns is parallel to the height direction of the connecting hole (31).

4. A heat storage component according to claim 1, characterized in that, Each of the aforementioned guide holes (41) is a hexagonal spiral hole with a cross-sectional shape, and each of the aforementioned guide holes (41) has a chamfer at its inner corner.

5. A heat storage component according to claim 1, characterized in that, The airflow dispersion structure includes a first cavity, a second cavity, and a third cavity. The apertures of the first cavity, the second cavity, and the third cavity are all different. There are multiple first cavities, multiple second cavities, and multiple third cavities. The multiple first cavities, multiple second cavities, and multiple third cavities are irregularly distributed on the flow equalization layer (2). The multiple first cavities, multiple second cavities, and multiple third cavities are sequentially interconnected.

6. A heat storage component according to claim 1, characterized in that, The flow equalization layer (2), the main heat storage layer (3) and the flow guiding layer (4) are provided with protruding edges (21) at their lower edges. Each of the protruding edges (21) has an inclined surface (22) on its inner side. The main heat storage layer (3) and the flow equalization layer (2) are provided with an oblique angle (23) at their upper edges. The support frame (1) is provided with a plug-in groove (11) on its upper side.

7. A heat storage component according to claim 1, characterized in that, The height ratio of the flow guiding layer (4), the main heat storage layer (3), and the flow equalization layer (2) is 3:5:

2.

8. A three-bed regenerative thermal oxidizer (RTO) device, characterized in that, The RTO body (5) includes a blower (6), an intake manifold (7), an exhaust manifold (8), a purge manifold (9), a burner (10), and a heat storage assembly as described in any one of claims 1-7. The RTO body (5) includes a combustion chamber (51) and three heat storage chambers (52). The heat storage assembly includes three heat storage chambers (52) arranged sequentially on the bottom of the RTO body (5). The combustion chamber (51) is located within the RTO body. On the top of the main body (5), the three heat storage chambers (52) are all connected to the combustion chamber (51). The three heat storage components are respectively arranged in the three heat storage chambers (52). The fan (6) is connected to one end of the air intake manifold (7). Each heat storage chamber (52) is connected to the air intake manifold (7), the air outlet manifold (8) and the purging manifold (9). The burner (10) is located on the top of the combustion chamber (51).

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