Air distribution mechanism for two combustion chambers using heat energy recovery

Abstract

This utility model relates to the field of combustion equipment technology, and in particular to a secondary combustion chamber air distribution mechanism utilizing heat energy recovery. It includes: a blower and an air duct connected to the output end of the blower; the air duct is sequentially wound around the outside of the plasma gasifier and the secondary combustion chamber, with the other end connected to the air inlet of the secondary combustion chamber; it also includes an air inlet pipe connected to the air inlet of the blower, the far end of which is located on the side of the plasma gasifier. By using the method of winding the air duct around the outside of the plasma gasifier and the secondary combustion chamber, this utility model can absorb heat from the outer surfaces of the plasma gasifier and the secondary combustion chamber, ensuring that the air supplied to the secondary combustion chamber has a certain temperature. Simultaneously, the air inlet pipe is also located on the side of the plasma gasifier, thus ensuring the air inlet temperature of the blower and further optimizing the air distribution temperature, thereby achieving the purpose of heat energy reuse.

Description

Technical Field

[0001] This utility model relates to the field of combustion equipment technology, and in particular to a secondary combustion chamber air distribution mechanism that utilizes heat energy recovery. Background Technology

[0002] Plasma gasification technology is an important method for waste treatment, and its core equipment includes a plasma gasifier and a secondary combustion chamber. The gasifier uses high-temperature plasma to convert waste into combustible syngas. To meet environmental protection requirements, the secondary combustion chamber must completely combust the syngas; national standards stipulate that its outlet temperature must not be lower than 1100℃.

[0003] However, the plasma gasifier and the secondary combustion chamber are in a high-temperature combustion state. Although the furnace body is insulated with refractory materials, the surface temperature is still as high as 100-150°C, causing a large amount of heat energy to be lost to the environment through the furnace wall. Maintaining the high temperature of 1100°C in the secondary combustion chamber usually requires a large amount of auxiliary fuel such as natural gas, which not only increases the operating cost, but also brings additional carbon emissions.

[0004] Therefore, how to effectively recover and utilize the heat energy lost from the gasifier and secondary combustion chamber to preheat the combustion air required for the secondary combustion chamber, thereby reducing auxiliary fuel consumption, lowering operating costs, and achieving energy conservation and emission reduction, has become a pressing technical challenge in this field. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to effectively recover and utilize the heat energy lost from the gasifier and secondary combustion chamber, and to propose a secondary combustion chamber air distribution mechanism that utilizes heat energy recovery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a secondary combustion chamber air distribution mechanism that utilizes heat energy recovery, including:

[0008] A blower and an air duct connected to the output end of the blower;

[0009] The air duct is wrapped around the outside of the plasma gasification furnace and the secondary combustion chamber in sequence, and the other end is connected to the air inlet of the secondary combustion chamber.

[0010] It also includes an air inlet pipe connected to the air inlet of the blower, the far end of which is located on the side of the plasma gasification furnace.

[0011] Furthermore, a filter cover is provided at the far end of the air inlet pipe, and the filter cover is connected to the air inlet pipe through a connecting assembly.

[0012] Furthermore, the connecting assembly includes a connecting pipe connected to the air inlet pipe, the connecting pipe having a stepped platform inside, and two gaskets and a spring placed inside the stepped platform, with the spring positioned between the two gaskets.

[0013] Furthermore, the outer circumference of the connecting pipe has two L-shaped locking grooves, the bottom of the filter cover has a plug tube, and two locking pins are fixedly installed on the outer side of the plug tube. The two locking pins are engaged in the L-shaped locking grooves, and the bottom of the plug tube abuts against a gasket.

[0014] Furthermore, a sealing ring is fitted on the outer side of the insertion pipe, and the connecting pipe and the air inlet pipe are threaded together.

[0015] Furthermore, the air duct is spirally wound around the outside of the plasma gasification furnace and the secondary combustion chamber, and the outer circumference of the air duct is provided with several grooves.

[0016] The present invention proposes a secondary combustion chamber air distribution mechanism that utilizes heat energy recovery. The beneficial effects are as follows: By wrapping the air duct around the outside of the plasma gasifier and the secondary combustion chamber, the air duct can absorb heat from the outside of the plasma gasifier and the secondary combustion chamber, ensuring that the air supplied to the secondary combustion chamber has a certain temperature. At the same time, the air inlet duct is also set on the side of the plasma gasifier, thus ensuring the air inlet temperature of the blower and further optimizing the air distribution temperature, thereby achieving the purpose of heat energy reuse. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection component structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the connecting pipe of this utility model;

[0020] Figure 4 This is a cross-sectional view of the duct of this utility model.

[0021] In the diagram: 1. Blower; 2. Air duct; 21. Groove; 3. Plasma gasifier; 4. Secondary combustion chamber; 5. Air inlet duct; 6. Filter cover; 61. Connecting pipe; 62. Locking pin; 63. Sealing ring; 7. Connecting assembly; 71. Connecting pipe; 72. Stepped position; 73. Gasket; 74. Spring; 75. L-shaped locking groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 As an embodiment of this utility model, it discloses a secondary combustion chamber air distribution mechanism that utilizes heat energy recovery. Specifically, the air distribution mechanism includes a blower 1 and an air duct 2 connected to the output end of the blower 1.

[0024] The air duct 2 is wrapped around the outside of the plasma gasification furnace 3 and the secondary combustion chamber 4 in sequence, and the other end is connected to the air inlet of the secondary combustion chamber 4.

[0025] It also includes an air inlet pipe 5 connected to the air inlet of the blower 1, with the far end of the air inlet pipe 5 located on the side of the plasma gasification furnace 3.

[0026] Specifically, in this embodiment, by wrapping the air duct 2 around the outside of the plasma gasifier 3 and the secondary combustion chamber 4, heat can be absorbed from the exterior of the plasma gasifier 3 and the secondary combustion chamber 4 to ensure that the air supplied to the secondary combustion chamber 4 has a certain temperature. At the same time, the air inlet duct 5 is also set on the side of the plasma gasifier 3 to ensure the air inlet temperature of the blower 1 and further optimize the air distribution temperature, thereby achieving the purpose of heat energy reuse.

[0027] Of course, in other embodiments, the air inlet pipe 5 can also be set on the side of the secondary combustion chamber 4. Those skilled in the art can set it according to actual installation requirements. In addition, in order to improve heat absorption efficiency, both the air duct 2 and the air inlet pipe 5 in this embodiment can be set as copper pipes. With the help of the good thermal conductivity of copper pipes, the heat utilization efficiency can be ensured.

[0028] Specifically, in this embodiment, the air duct 2 can be wound and welded to the outside of the plasma gasification furnace 3 and the secondary combustion chamber 4, and the air inlet duct 5 can be placed directly on the ground or fixed with a bracket.

[0029] In some embodiments, a filter cover 6 is also provided at the far end of the air inlet pipe 5 in this invention. The filter cover 6 is connected to the air inlet pipe 5 through a connecting component 7. The filter cover 6 can be used to shield and protect the air inlet of the air inlet pipe 5 to prevent large foreign objects from being sucked into the blower 1.

[0030] Furthermore, in this embodiment, the connecting component 7 includes a connecting pipe 71 connected to the air inlet pipe 5. The connecting pipe 71 has a stepped platform 72 inside. Two gaskets 73 and a spring 74 are placed inside the stepped platform 72. The spring 74 is placed between the two gaskets 73.

[0031] Based on the above embodiments, in this embodiment, the outer circumference of the connecting pipe 71 is distributed with two L-shaped locking grooves 75, the long side of the L-shaped locking groove 75 extends through to the side of the connecting pipe 71, the bottom of the filter cover 6 has a plug tube 61, and two locking pins 62 are fixedly installed on the outer side of the plug tube 61. The two locking pins 62 are engaged in the L-shaped locking grooves 75, and the bottom of the plug tube 61 abuts against the gasket 73.

[0032] In other words, when installing the filter cover 6, first insert the insertion tube 61 of the filter cover 6 into the connecting tube 71. During this process, it is necessary to keep the locking pins 62 and L-shaped locking grooves 75 on both sides of the insertion tube 61 in place. When the insertion tube 61 is inserted, it will move downward against the upper gasket 73 and compress the spring 74 until the locking pin 62 moves to the bottom of the L-shaped locking groove 75. At this time, the entire filter cover 6 can be rotated so that the locking pin 62 slides to the side of the L-shaped locking groove 75. Then, release the pressure on the filter cover 6. Under the resistance of the spring 74, the gasket 73 pushes the insertion tube 61 outward, so that the locking pin 62 is inserted into the short side groove of the L-shaped locking groove 75, thus completing the installation and positioning of the entire filter cover 6.

[0033] Conversely, when it is necessary to disassemble and maintain the filter cover 6, press the filter cover 6 inward to disengage the locking pin 62 from the short side groove of the L-shaped locking groove 75, then reverse the filter cover 6 and pull it outward. The operation is simple and convenient.

[0034] Preferably, in this embodiment, a sealing ring 63 is also provided on the outer side of the insertion pipe 61. The sealing ring 63 is used to improve the sealing performance of the insertion pipe 61 and the connecting pipe 71. The connecting pipe 71 and the air inlet pipe 5 are threadedly connected. Of course, the end of the air inlet pipe 5 abuts against the gasket 73 below. The threaded connection method can improve the ease of assembly of the entire connecting pipe 71, gasket 73 and spring 74, and at the same time improve the reliability of subsequent disassembly and maintenance of the entire component.

[0035] It should be noted that in this embodiment, the air duct 2 is spirally wound around the outside of the plasma gasification furnace 3 and the secondary combustion chamber 4. Specifically, it can be arranged in a spiral, either rising or falling. Of course, the specific number of winding turns is not limited to this. Figure 1 As shown, the air duct 2 can be wrapped around the two furnace bodies to the maximum extent, and the heat dissipation of the furnace bodies can be used to heat the air distribution in the secondary combustion chamber to achieve the purpose of heat energy utilization.

[0036] The outer circumference of the air duct 2 is provided with a number of grooves 21. The grooves 21 can be formed by pressing and denting the outer side of the middle section of the air duct 2. The number of grooves 21 can increase the heat absorption and heat dissipation area of ​​the air duct 2, thereby improving the heating efficiency of the internal airflow. Of course, in a further embodiment, a number of grooves 21 can also be provided on the outer side of the air inlet pipe 5. The principle is the same as that of the air duct 2, and will not be described in detail here.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A secondary combustion chamber air distribution mechanism utilizing heat energy recovery, characterized in that, include: Blower (1) and air duct (2) connected to the output end of the blower (1); The air duct (2) is wrapped around the outside of the plasma gasification furnace (3) and the secondary combustion chamber (4) in sequence, and the other end is connected to the air inlet of the secondary combustion chamber (4); It also includes an air inlet pipe (5) connected to the air inlet of the blower (1), the far end of which is located on the side of the plasma gasification furnace (3).

2. The secondary combustion chamber air distribution mechanism utilizing heat energy recovery according to claim 1, characterized in that: A filter cover (6) is also provided at the far end of the air inlet pipe (5), and the filter cover (6) is connected to the air inlet pipe (5) through a connecting component (7).

3. The secondary combustion chamber air distribution mechanism utilizing heat energy recovery according to claim 2, characterized in that: The connecting assembly (7) includes a connecting pipe (71) connected to the air inlet pipe (5). The connecting pipe (71) has a stepped platform (72) inside. Two gaskets (73) and a spring (74) are placed inside the stepped platform (72). The spring (74) is placed between the two gaskets (73).

4. The secondary combustion chamber air distribution mechanism utilizing heat energy recovery according to claim 3, characterized in that: The connecting pipe (71) has two L-shaped locking grooves (75) distributed on its outer circumference. The bottom of the filter cover (6) has a plug pipe (61). Two locking pins (62) are fixedly installed on the outer side of the plug pipe (61). The two locking pins (62) are engaged in the L-shaped locking grooves (75). The bottom of the plug pipe (61) abuts against the gasket (73).

5. A secondary combustion chamber air distribution mechanism utilizing heat energy recovery according to claim 4, characterized in that: A sealing ring (63) is also fitted on the outside of the insertion pipe (61), and the connecting pipe (71) and the air inlet pipe (5) are threaded together.

6. The secondary combustion chamber air distribution mechanism utilizing heat energy recovery according to claim 1, characterized in that: The air duct (2) is spirally wound around the outside of the plasma gasification furnace (3) and the secondary combustion chamber (4), and the outer circumference of the air duct (2) is provided with several grooves (21).

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