Combustion device

Abstract

The invention relates to a combustion device. The combustion device comprises a burnout chamber, a first hearth, a second hearth and a combustor. The burnout chamber is provided with a first cover shell with a first downward opening. The first hearth includes a second housing having an upward second opening. The second housing is arranged on the periphery of the first housing in a sleeving mode, and a first flowing channel communicating with the first opening and the second opening is defined between the first housing and the second housing. The second hearth comprises a third housing with a third downward opening. The periphery of the second housing is sleeved with the third housing, and a second flowing channel communicating with the second opening and the third opening is defined between the second housing and the third housing. The combustor comprises a conveying pipeline communicated with the first housing and used for conveying combustion gas. By means of the combustion device, the gas with the extremely-low heat value can be fully combusted, and therefore the harm of carbon black contained in the gas with the extremely-low heat value to the human body and the environment is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of activated carbon manufacturing, and particularly to a combustion device. Background Art

[0002] During the manufacturing process of activated carbon, a large amount of carbonization pyrolysis gas and activation furnace associated gas are generated. The calorific value of these gases is extremely low, about 4% of methane, and the main component of the combustible gas is CO. However, the low CO content results in a low calorific value of the activated carbon carbonization pyrolysis gas and activation associated gas, making it difficult to catch fire. Moreover, the carbonization pyrolysis gas contains a large amount of carbon black, which is very difficult to handle. Carbon black can cause harm to the human respiratory tract and skin. Long-term inhalation of carbon black can lead to fibrosis of lung tissue and even cause pneumoconiosis, resulting in the loss of respiratory function. Therefore, it is necessary to treat the extremely low calorific value gas and the carbon black contained in the gas generated during the activated carbon manufacturing process. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a combustion device, through which the full combustion of the extremely low calorific value gas can be achieved, thereby reducing the harm caused by the carbon black contained in the extremely low calorific value gas to the human body and the environment, and at least partially solving the related technical problems.

[0004] To achieve the above purpose, the present disclosure provides a combustion device. The combustion device includes: An afterburning chamber, including a first housing having a first opening facing downward; A first furnace chamber, including a second housing having a second opening facing upward. The second housing is sleeved on the outer periphery of the first housing, and a first flow channel communicating the first opening and the second opening is formed between the first housing and the second housing; A second furnace chamber, including a third housing having a third opening facing downward. The third housing is sleeved on the outer periphery of the second housing, and a second flow channel communicating the second opening and the third opening is formed between the second housing and the third housing; and A burner, including a conveying pipeline for conveying combustion gas and communicating with the first housing.

[0005] Optionally, the first housing has a first top wall, the second housing has a first bottom wall, the third housing has a second top wall, and the conveying pipeline penetrates through the second top wall, the second opening, and the first top wall and communicates with the inner cavity of the first housing.

[0006] Optionally, the conveying pipeline, the first housing, and the second housing are coaxially arranged.

[0007] Optionally, the first housing further includes a first annular peripheral wall formed by extending downward from the edge of the first top wall, and the second housing further includes a second annular peripheral wall formed by extending upward from the edge of the first bottom wall. The second annular peripheral wall is sleeved outside the first annular peripheral wall. The first top wall and the first bottom wall are oppositely arranged. A first communication port is formed on the first top wall. The outlet end of the conveying pipeline passes through the second opening and is inserted into the first communication port. A first flow channel is formed between the first annular peripheral wall and the second annular peripheral wall.

[0008] Optionally, the material of the second housing is an adiabatic material.

[0009] Optionally, the adiabatic material includes refractory bricks or refractory cement.

[0010] Optionally, the conveying pipeline, the first housing, the second housing, and the third housing are coaxially arranged.

[0011] Optionally, the third housing further includes a third annular peripheral wall formed by extending downward from the edge of the second top wall. The third annular peripheral wall is sleeved outside the second annular peripheral wall. The second top wall and the first bottom wall are oppositely arranged. A second communication port is formed on the second top wall. The inlet end of the conveying pipeline passes through the second opening and is inserted into the second communication port. A second flow channel is formed between the second annular peripheral wall and the third annular peripheral wall.

[0012] Optionally, water-cooled wall tubes are provided on both the inner wall surface of the third annular peripheral wall and the outer wall surface of the second annular peripheral wall.

[0013] Optionally, the first annular peripheral wall, the second annular peripheral wall, and the third annular peripheral wall are all configured as circular or rectangular.

[0014] Through the above technical solution, namely a combustion device, the combustion device includes a burner, a burnout chamber, a first furnace, and a second furnace. During the combustion treatment of very low calorific value gas, the very low calorific value gas enters the burnout chamber from the conveying pipeline of the burner and burns. Further, the first housing, the second housing, and the third housing are nested with each other, so that the flue gas can flow in an N shape under the guidance of the first flow channel and the second flow channel. The first flow channel and the second flow channel increase the flow path of the very low calorific value gas in the combustion device, thereby enabling the very low calorific value gas to burn fully in the combustion device and effectively reducing the harm caused by the carbon black contained in the very low calorific value gas to the human body and the environment.

[0015] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and form a part of the specification. Together with the following detailed description, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the accompanying drawings: Figure 1 is an assembly schematic diagram of a combustion device provided according to an embodiment of the present disclosure; Figure 2 is an assembly schematic diagram of a burnout chamber provided according to an embodiment of the present disclosure; Figure 3 is a structural schematic diagram of a first furnace provided according to an embodiment of the present disclosure; Figure 4 is a structural schematic diagram of a second furnace provided according to an embodiment of the present disclosure.

[0017] Explanation of reference numerals 100, combustion device; 1, burner; 11, conveying pipeline; 111, inlet end; 112, outlet end; 2, burnout chamber; 21, first housing; 211, first opening; 21a, first top wall; 21b, first annular peripheral wall; 21c, first communication port; 3, first furnace; 31, second housing; 311, second opening; 31a, first bottom wall; 31b, second annular peripheral wall; 4, second furnace; 41, third housing; 411, third opening; 41a, second top wall; 41b, third annular peripheral wall; 41c, second communication port; 5, first flow channel; 6, second flow channel; 7, water wall tube. Detailed description of specific embodiments

[0018] The following provides a detailed description of the specific embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and do not limit the present disclosure.

[0019] In the present disclosure, unless otherwise stated, "inside and outside" refer to the inside and outside of the contour of the corresponding component; in addition, it should be noted that the terms such as "first, second" are used to distinguish one element from another element.

[0020] According to an embodiment of the present disclosure, as Figures 1-4As shown, a combustion device 100 is provided. The combustion device 100 may include a burnout chamber 2, a first furnace chamber 3, a second furnace chamber 4, and a burner 1. The burnout chamber 2 includes a first housing 21 having a first opening 211 facing downward. The first furnace chamber 3 includes a second housing 31 having a second opening 311 facing upward. The second housing 31 is sleeved on the outer periphery of the first housing 21, and a first flow channel 5 communicating the first opening 211 and the second opening 311 is formed between the first housing 21 and the second housing 31. The second furnace chamber 4 includes a third housing 41 having a third opening 411 facing downward. The third housing 41 is sleeved on the outer periphery of the second housing 31, and a second flow channel 6 communicating the second opening 311 and the third opening 411 is formed between the second housing 31 and the third housing 41. The burner 1 includes a conveying pipeline 11 communicating with the first housing 21 for conveying combustion gas.

[0021] During the combustion treatment of extremely low calorific value gas, the extremely low calorific value gas can enter the burnout chamber 2 from the conveying pipeline 11 of the burner 1 and burn. Further, the first housing 21, the second housing 31, and the third housing 41 are nested with each other, so that the flue gas can flow in an N shape under the guidance of the first flow channel 5 and the second flow channel 6. The first flow channel 5 and the second flow channel 6 increase the flow path of the extremely low calorific value gas in the combustion device 100, so that the extremely low calorific value gas can burn sufficiently in the combustion device 100, effectively reducing the harm caused by the carbon black contained in the extremely low calorific value gas to the human body and the environment.

[0022] In some embodiments, as Figure 1 , Figure 2 and Figure 3 shown, the first housing 21 has a first top wall 21a, the second housing 31 has a first bottom wall 31a, the third housing 41 has a second top wall 41a, and the conveying pipeline 11 penetrates through the second top wall 41a, the second opening 311, and the first top wall 21a and communicates with the inner cavity of the first housing 21. This arrangement of the conveying pipeline 11, the first housing 21, and the second housing 31 has a simple structure, convenient assembly, and reliable use, and can reliably form an N-shaped flow channel for the flue gas to flow.

[0023] In some embodiments, as Figure 1 shown, the conveying pipeline 11, the first housing 21, and the second housing 31 are coaxially arranged. This arrangement is beneficial to the uniform flow of the flue gas during the combustion of the extremely low calorific value gas, avoiding excessive gas pressure at local positions, which may cause deformation of the first housing 21 and / or the second housing 31, and extending the service life of the combustion device 100.

[0024] In some embodiments, as Figure 1 , Figure 2 and Figure 3As shown, the first housing 21 further includes a first annular peripheral wall 21b formed by extending downward from the edge of the first top wall 21a, and the second housing 31 further includes a second annular peripheral wall 31b formed by extending upward from the edge of the first bottom wall 31a. The second annular peripheral wall 31b is sleeved outside the first annular peripheral wall 21b. The first top wall 21a and the first bottom wall 31b are oppositely arranged. A first communication port 21c is formed on the first top wall 21a. The outlet end 112 of the conveying pipeline 11 passes through the second opening 311 and is inserted into the first communication port 21c. A first flow channel 5 is formed between the first annular peripheral wall 31b and the second annular peripheral wall 41b.

[0025] This implementation manner of the first housing 21 and the second housing 31 has a simple structure and a simple manufacturing process. In addition, this implementation manner can not only increase the flow path of the ultra-low calorific value gas in the combustion device 100, but also linearly guide the ultra-low calorific value gas, avoiding the overly tortuous first flow channel 5 from affecting the normal flow of the ultra-low calorific value gas.

[0026] In some embodiments, the material of the second housing 31 is an adiabatic material. It should be noted that the burner 1 is directly opposite to the second housing 31 through the first housing 21, that is, the burnout chamber 2 is directly opposite to the first furnace chamber 3. By further selecting the material of the second housing 31 as an adiabatic material, the adiabatic material prevents the first furnace chamber 3 from absorbing the heat released by the combustion in the burnout chamber 2, so that the heat can be further transferred to the second flow channel 6 to achieve the purpose of heat utilization. In addition, the adiabatic material is also beneficial to the ignition and stable combustion of the ultra-low calorific value gas.

[0027] In some embodiments, the adiabatic material may include refractory bricks or refractory cement. The selection of refractory bricks or refractory cement mainly utilizes their advantages such as high refractoriness, good chemical corrosion resistance, and good wear resistance.

[0028] In some embodiments, as Figure 1 shown, the conveying pipeline 11, the first housing 21, the second housing 31, and the third housing 41 are coaxially arranged. This arrangement is beneficial to the uniform flow of the flue gas during the combustion of the ultra-low calorific value gas, avoiding excessive flue gas pressure at local positions, which may cause deformation of the first housing 21, the second housing 31, and / or the third housing 41, and extending the service life of the combustion device 100.

[0029] In some embodiments, as Figures 1-4As shown, the third housing 41 further includes a third annular peripheral wall 41b formed by extending downward from the edge of the second top wall 41a. The third annular peripheral wall 41b is sleeved outside the second annular peripheral wall 31b. The second top wall 41a and the first bottom wall 21a are oppositely arranged. A second communication port 41c is formed on the second top wall 41a. The inlet end 111 of the conveying pipeline 11 passes through the second opening 311 and is inserted into the second communication port 41c. A second flow channel 6 is formed between the second annular peripheral wall 31b and the third annular peripheral wall 41b. This implementation manner of the third housing 41 has a simple structure and a simple manufacturing process. In addition, this implementation manner can not only increase the flow path of the very low calorific value gas in the combustion device 100, but also form a linear guide for the very low calorific value gas, avoiding the overly tortuous first flow channel 5 from affecting the normal flow of the very low calorific value gas. In addition, the setting of the second flow channel 6 further increases the flow path of the very low calorific value gas in the combustion device 100 on the basis of the first flow channel 5, so that the very low calorific value gas can burn sufficiently in the combustion device 100, effectively reducing the harm caused by the carbon black contained in the very low calorific value gas to the human body and the environment.

[0030] In some embodiments, as Figure 1 、 Figure 3 and Figure 4 shown, water-cooled wall tubes 7 are provided on both the inner wall surface of the third annular peripheral wall 41b and the outer wall surface of the second annular peripheral wall 31b. Such a design enables the heat of the flue gas flowing through the second flow channel 6 to further heat the heat exchange medium in the water-cooled wall tubes 7, that is, to achieve the purpose of recovering and utilizing the heat of the flue gas. The heated heat exchange medium in the water-cooled wall tubes 7 can be further utilized. For example, it can provide a heat source for subsequent flue gas dewhiting or heat supply transformation.

[0031] In some embodiments, the first annular peripheral wall 21b, the second annular peripheral wall 31b, and the third annular peripheral wall 41b are all configured as circular or rectangular. Such a design can effectively simplify the production and assembly process flows of the first housing 21, the second housing 31, and the third housing 41. Of course, it can be understood that the first annular peripheral wall 21b, the second annular peripheral wall 31b, and the third annular peripheral wall 41b can also be configured as elliptical, triangular, or other irregular shapes, which are not limited herein, and those skilled in the art can design and adjust according to the actual situation.

[0032] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0033] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0034] In addition, any combination can be made among various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A combustion device, characterized in that: include: A burnout chamber including a first casing having a downward first opening; The first furnace comprises a second cover shell having a second opening upward, the second cover shell is sleeved on the outer periphery of the first cover shell, and a first flow channel connecting the first opening and the second opening is formed between the first cover shell and the second cover shell; A second furnace chamber comprises a third cover shell having a third opening facing downwards, wherein the third cover shell is sleeved on the outer circumference of the second cover shell, and a second flow channel connecting the second opening and the third opening is formed between the second cover shell and the third cover shell; and The burner comprises a delivery pipeline connected with the first casing and used for delivering combustion gas.

2. The combustion device according to claim 1, characterized in that: The first housing has a first top wall, the second housing has a first bottom wall, the third housing has a second top wall, and the delivery pipeline runs through the second top wall, the second opening and the first top wall and communicates with the inner cavity of the first housing.

3. The combustion device according to claim 2, characterized in that: The delivery pipe, the first casing and the second casing are coaxially arranged.

4. The combustion device according to claim 2, characterized in that: The first cover shell also includes a first annular circumferential wall formed by extending downward from the edge of the first top wall, and the second cover shell also includes a second annular circumferential wall formed by extending upward from the edge of the first bottom wall, the second annular circumferential wall is sleeved on the outside of the first annular circumferential wall, the first top wall and the first bottom wall are arranged opposite to each other, a first connecting port is opened on the first top wall, the outlet end of the conveying pipe is inserted into the first connecting port through the second opening, and the first flow channel is formed between the first annular circumferential wall and the second annular circumferential wall.

5. The combustion device according to claim 2, characterized in that: The second cover shell is made of heat insulating material.

6. The combustion device according to claim 5, characterized in that: The thermal insulation material includes refractory bricks or refractory cement.

7. The combustion device according to claim 3, characterized in that: The delivery pipeline, the first casing, the second casing and the third casing are coaxially arranged.

8. The combustion device according to claim 7, characterized in that: The third cover shell also includes a third annular circumferential wall formed by extending downward from the edge of the second top wall, the third annular circumferential wall is sleeved on the outside of the second annular circumferential wall, the second top wall and the first bottom wall are arranged opposite to each other, a second connecting port is opened on the second top wall, the inlet end of the conveying pipe passes through the second opening and is inserted into the second connecting port, and the second flow channel is formed between the second annular circumferential wall and the third annular circumferential wall.

9. The combustion device according to claim 8, characterized in that: Water-cooled wall tubes are provided on the inner wall surface of the third annular circumferential wall and the outer wall surface of the second annular circumferential wall.

10. The combustion device according to claim 7, characterized in that: The first annular circumferential wall, the second annular circumferential wall and the third annular circumferential wall are all configured in a circular shape or a rectangular shape.

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