Segmented low-nitrogen combustion equipment for carbon black tail gas

Abstract

The invention relates to the technical field of carbon black tail gas combustion treatment, and provides carbon black tail gas segmented low-nitrogen combustion equipment which comprises a main body, the main body is provided with a tail gas combustion cavity, the tail gas combustion cavity is used for combustion treatment of carbon black tail gas, and the top and the bottom of the tail gas combustion cavity are provided with a smoke exhaust pipe and a tail gas input pipe correspondingly. One end of the tail gas input pipe is located in the tail gas combustion cavity, the other end of the tail gas input pipe is located outside the tail gas combustion cavity, the first gas uniformizing cavity is arranged in the tail gas combustion cavity and provided with a closed end and an open end, the open end faces the bottom of the tail gas combustion cavity, and one end of the tail gas input pipe extends into the first gas uniformizing cavity and faces the closed end. A gas channel is formed between the outer wall of the first gas uniformizing cavity and the inner wall of the tail gas combustion cavity, and the air conveying assembly is arranged on the main body and used for conveying air into the gas channel. By means of the technical scheme, the problem that in the prior art, when combustion equipment conducts combustion treatment on carbon black tail gas, gas supply is not uniform and stable is solved.

Description

Technical Field

[0001] The invention relates to the technical field of carbon black tail gas combustion treatment, and in particular to a carbon black tail gas segmented low-nitrogen combustion device. Background Art

[0002] Carbon black is usually produced by incomplete combustion or thermal cracking of hydrocarbons (such as natural gas, heavy oil, coal tar, etc.). In this process, the raw materials react in a specific reactor at high temperature and under certain reaction conditions (such as air supply, reaction time, etc.). When carbon black particles are generated, a large amount of gas is produced. After the subsequent separation process, most of the carbon black particles are removed, and the remaining gas is the carbon black tail gas.

[0003] Currently, the treatment of carbon black tail gas mainly relies on combustion technology, which aims to remove harmful components in it before discharging it. However, since carbon black tail gas often has problems of unevenness and instability during transportation, it does not mix well with air, which in turn affects the combustion efficiency. This incomplete combustion phenomenon not only reduces the treatment effect, but also leaves a lot of unburned carbon black tail gas in the exhaust gas, making it difficult to meet increasingly stringent environmental protection standards. Summary of the invention

[0004] The present invention provides a carbon black tail gas segmented low-nitrogen combustion device, which solves the problem of uneven and unstable gas supply when the combustion device in the prior art performs combustion treatment on the carbon black tail gas.

[0005] The technical solution of the present invention is as follows: a carbon black tail gas staged low nitrogen combustion device, comprising: The main body has a tail gas combustion chamber, the tail gas combustion chamber is used to burn and process carbon black tail gas, the top and bottom of the tail gas combustion chamber are respectively provided with a smoke exhaust pipe and a tail gas input pipe, the tail gas input pipe is used to transport the carbon black tail gas into the tail gas combustion chamber, a first gas-uniform cavity, the first gas-uniform cavity is arranged in the tail gas combustion cavity, the first gas-uniform cavity has a closed end and an open end, the open end faces the bottom of the tail gas combustion cavity, one end of the tail gas inlet pipe extends into the first gas-uniform cavity and faces the closed end, and the other end is located outside the tail gas combustion cavity, and a gas channel is formed between the outer wall of the first gas-uniform cavity and the inner wall of the tail gas combustion cavity, An air delivery component is arranged on the main body and is used for delivering air into the gas channel.

[0006] As a further technical solution, The inner wall of the exhaust gas combustion chamber is provided with a plurality of first partition plates, and a gap is provided between the first partition plates and the outer wall of the first gas homogenizing chamber. The outer wall of the first uniform gas cavity is provided with a plurality of second partition plates, a gap is provided between the second partition plates and the inner wall of the tail gas combustion cavity, and the plurality of first partition plates and the plurality of second partition plates are alternately distributed along the conveying direction of the gas channel.

[0007] As a further technical solution, The tail gas combustion chamber and the first uniform gas chamber are both in the shape of a body of revolution, and the tail gas combustion chamber is coaxial with the first uniform gas chamber. The cross-sectional area of ​​the first gas homogenizing cavity gradually increases from the closed end to the open end.

[0008] As a further technical solution, The bottom of the tail gas combustion chamber also has a second uniform gas cavity, which is located below the first uniform gas cavity. The second uniform gas cavity has an open end, which faces upward. The second uniform gas cavity is in the shape of a rotating body. The second uniform gas cavity is coaxial with the first uniform gas cavity. The open end of the first uniform gas cavity passes through the open end and extends into the second uniform gas cavity. There is a gap between the open end and the bottom and side walls of the second uniform gas cavity.

[0009] As a further technical solution, The cross-sectional area of ​​the second gas homogenizing cavity gradually increases from the bottom to the open end.

[0010] As a further technical solution, it also includes: A conical guide block is arranged at the closed end of the first gas homogenizing cavity, the tip of the conical guide block faces the end of the exhaust gas inlet pipe, and the conical guide block is smoothly connected to the closed end.

[0011] As a further technical solution, the air delivery assembly includes: an annular tube body, the annular tube body is arranged on the inner wall of the exhaust gas combustion chamber, the annular tube body is arranged below the first partition plate body, and the annular tube body is provided with a plurality of first air outlet holes, The inner annular tube body is arranged in the annular tube body, a gap is formed between the outer wall of the inner annular tube body and the inner wall of the annular tube body, a plurality of second air outlet holes are formed on the inner annular tube body, and the second air outlet holes face a side away from the first air outlet hole. An air input pipe is arranged on the main body, and the air input pipe is communicated with the inner annular pipe body.

[0012] As a further technical solution, A plurality of the first air outlet holes are evenly arranged along the circumferential direction of the annular tube body, and the cross-sectional area of ​​the first air outlet holes gradually increases from one end close to the inner wall of the annular tube body to the other end.

[0013] As a further technical solution, The annular tube body is provided with an annular opening, and a plurality of the first air outlet holes are sequentially arranged adjacent to each other to form the annular opening.

[0014] As a further technical solution, The main body also has an annular cavity, which is coaxial with the exhaust gas combustion cavity and is located outside the exhaust gas combustion cavity. The annular chamber has an inlet and an outlet.

[0015] The working principle and beneficial effects of the present invention are: In the present invention, the carbon black tail gas enters the first uniform gas cavity through the tail gas inlet pipe, one end of the tail gas inlet pipe faces the closed end, and the tail gas diffuses around the closed end and moves toward the open end, and finally enters the gas channel uniformly along the open end, so that the carbon black tail gas content in each part of the gas channel is uniform. This effectively improves the distribution state of the carbon black tail gas before entering the combustion link, overcomes the problem of unevenness in its transportation process, and lays the foundation for subsequent full and uniform contact with air.

[0016] The exhaust gas diffuses and homogenizes in the first homogenizing chamber, which preliminarily adjusts the distribution of the exhaust gas to make it more uniform. This preliminary homogenization is crucial for subsequent combustion, because uniform exhaust gas distribution can ensure that the combustion reaction proceeds under more ideal conditions and avoid unstable or incomplete combustion due to local differences in exhaust gas concentration.

[0017] The gas channel formed between the outer wall of the first homogenizing chamber and the inner wall of the exhaust combustion chamber provides space for the air delivery component to deliver air. This allows the carbon black exhaust gas that has been initially homogenized to be fully mixed with air in the subsequent process, which is an important preparatory step for achieving low-nitrogen combustion. Through reasonable mixing of air and exhaust gas, the combustion process can be optimized, the combustion efficiency can be improved, and the unburned carbon black exhaust gas in the exhaust gas can be reduced to meet environmental protection standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the AA section structure; Figure 4 For the present invention Figure 3 Middle B is a schematic diagram of a partially enlarged structure; In the figure: 1-main body, 11-exhaust gas combustion chamber, 12-smoke exhaust pipe, 13-exhaust gas input pipe, 14-first partition plate body, 15-second partition plate body, 2-first uniform gas chamber, 21-closed end, 22-open end, 23-gas channel, 3-air delivery component, 31-annular tube body, 32-first air outlet, 33-inner annular tube body, 34-second air outlet, 35-air input pipe, 36-annular opening, 4-second uniform gas chamber, 41-open end, 5-conical guide block, 6-annular chamber, 61-inlet, 62-outlet. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0021] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] like Figure 1-4As shown, the present invention proposes a carbon black exhaust segmented low-nitrogen combustion device, including a main body 1, the main body 1 has an exhaust gas combustion chamber 11, the exhaust gas combustion chamber 11 is used for burning and treating carbon black exhaust gas, the top and bottom of the exhaust gas combustion chamber 11 are respectively provided with a smoke exhaust pipe 12 and an exhaust gas inlet pipe 13, one end of the exhaust gas inlet pipe 13 is located in the exhaust gas combustion chamber 11, and the other end is located outside the exhaust gas combustion chamber 11, a first uniform gas cavity 2 is arranged in the exhaust gas combustion chamber 11, the first uniform gas cavity 2 has a closed end 21 and an open end 22, the open end 22 faces the bottom of the exhaust gas combustion chamber 11, one end of the exhaust gas inlet pipe 13 extends into the first uniform gas cavity 2 and faces the closed end 21, a gas channel 23 is formed between the outer wall of the first uniform gas cavity 2 and the inner wall of the exhaust gas combustion chamber 11, an air conveying component 3 is arranged on the main body 1, and the air conveying component 3 is used to convey air into the gas channel 23.

[0025] In this embodiment, Figure 3 As shown, the carbon black exhaust gas enters the first uniform gas cavity 2 through the exhaust gas inlet pipe 13, and one end of the exhaust gas inlet pipe 13 faces the closed end 21. The carbon black exhaust gas passes through the outlet end of the exhaust gas inlet pipe 13 and moves toward the closed end 21. After hitting the closed end 21, the carbon black exhaust gas will diffuse around and move toward the open end 22. When the carbon black exhaust gas passes through the open end 22, it will enter the gas channel 23 evenly along the four sides of the open end 22, so that the carbon black exhaust gas in each circumferential part of the gas channel 23 maintains a uniform content. During combustion, the contact with the air will be more sufficient and uniform, so that the combustion is more complete and the carbon black exhaust gas content in the exhaust gas is reduced.

[0026] The carbon black tail gas enters the first uniform gas cavity 2 through the tail gas inlet pipe 13, one end of the tail gas inlet pipe 13 faces the closed end 21, and the tail gas diffuses around the closed end 21 and moves toward the open end 22, and finally enters the gas channel 23 uniformly along the open end 22, so that the carbon black tail gas content in each part of the inner circumference of the gas channel 23 is uniform. This effectively improves the distribution state of the carbon black tail gas before entering the combustion link, overcomes the problem of unevenness in its transportation process, and lays the foundation for subsequent full and uniform contact with air.

[0027] The exhaust gas diffuses and homogenizes in the first homogenizing chamber 2, which preliminarily adjusts the distribution of the exhaust gas to make it more uniform. This preliminary homogenization is crucial for subsequent combustion, because uniform exhaust gas distribution can ensure that the combustion reaction is carried out under more ideal conditions and avoid unstable or incomplete combustion due to local concentration differences of the exhaust gas.

[0028] The gas channel 23 formed between the outer wall of the first homogenizing cavity 2 and the inner wall of the exhaust gas combustion cavity 11 provides space for the air delivery component 3 to deliver air. This allows the carbon black exhaust gas that has been initially homogenized to be fully mixed with air in the subsequent process, which is an important preparatory step for achieving low-nitrogen combustion. Through reasonable mixing of air and exhaust gas, the combustion process can be optimized, the combustion efficiency can be improved, and the unburned carbon black exhaust gas in the exhaust gas can be reduced to meet environmental protection standards.

[0029] Furthermore, there are several first partition plates 14 on the inner wall of the exhaust gas combustion chamber 11, and there is a gap between the first partition plate 14 and the outer wall of the first uniform gas chamber 2. There are several second partition plates 15 on the outer wall of the first uniform gas chamber 2, and there is a gap between the second partition plate 15 and the inner wall of the exhaust gas combustion chamber 11. Several first partition plates 14 and several second partition plates 15 are alternately distributed along the conveying direction of the gas channel 23.

[0030] In this embodiment, the first partition plate body 14 on the inner wall of the exhaust combustion chamber 11 and the second partition plate body 15 on the outer wall of the first gas homogenizing chamber 2 are alternately distributed along the conveying direction of the gas channel 23, and there is a gap between the two. When the carbon black exhaust gas enters from the first gas homogenizing chamber 2 and passes through the gas channel 23, these partition plates will change the flow path of the gas, causing the gas to be continuously divided and diverted, forming a complex airflow trajectory. This alternating distribution of the partition plate structure breaks the gas flow pattern that may have been relatively single, promotes the mixing of air and carbon black exhaust gas on a smaller scale, and greatly improves the uniformity of gas mixing.

[0031] By enhancing the uniformity of gas mixing, the combustion reaction energy can be more evenly distributed in the tail gas combustion chamber 11 after ignition. The combustion will not be too strong or too weak locally, but a relatively uniform combustion area will be formed. This not only makes full use of the energy in the carbon black tail gas and improves the combustion efficiency, but also reduces the problems of local high temperature and increased nitrogen oxide generation caused by uneven combustion, which helps to achieve the goal of low-nitrogen combustion. At the same time, it also extends the service life of the equipment, because uniform combustion can reduce the risk of damage caused by uneven local heating of the equipment.

[0032] Furthermore, the exhaust gas combustion chamber 11 and the first uniform gas chamber 2 are both in the shape of a body of revolution, the exhaust gas combustion chamber 11 is coaxial with the first uniform gas chamber 2, and the cross-sectional area of ​​the first uniform gas chamber 2 gradually increases from the closed end 21 to the open end 22.

[0033] In this embodiment, the exhaust combustion chamber 11 and the first gas homogenizing chamber 2 are both in the shape of a body of revolution and are coaxial, and the cross-sectional area of ​​the first gas homogenizing chamber 2 gradually increases from the closed end 21 to the open end 22. This structure allows the exhaust gas to have more time and space to diffuse and homogenize after the carbon black exhaust enters the first gas homogenizing chamber 2 as the cross-sectional area increases. Just as the water flow of a river slows down when it flows through a wide area, and impurities in the water are more evenly distributed, the carbon black exhaust can achieve a better homogenization effect in the first gas homogenizing chamber 2 of this structure, laying a good foundation for subsequent uniform mixing with air and full combustion.

[0034] The design of the rotating body and coaxiality and the change in the cross-sectional area of ​​the first uniform gas cavity 2 make the entire device more adaptable to the requirements of the combustion process in structure. The distance from the opening end 22 to the exhaust gas combustion chamber 11 is the same all around, which is more conducive to the uniform delivery of carbon black exhaust gas to the gas channel 23. During combustion, uniform exhaust gas distribution and appropriate flow rate are crucial to combustion stability and efficiency. This structure can ensure that the carbon black exhaust gas enters the combustion area in an ideal state and is burned after being fully mixed with the air, avoiding problems such as uneven exhaust gas distribution or too fast or too slow flow rate that lead to unstable and incomplete combustion, which helps to improve combustion efficiency, reduce nitrogen oxide generation, and achieve the purpose of low-nitrogen combustion. At the same time, it is convenient for the design, manufacture and maintenance of the equipment because its regular geometric shape is easier to implement and control in engineering.

[0035] Furthermore, the bottom of the exhaust gas combustion chamber 11 also has a second uniform gas cavity 4, which is located below the first uniform gas cavity 2. The second uniform gas cavity 4 has an open end 41, and the open end 41 faces upward. The second uniform gas cavity 4 is a rotating body. The second uniform gas cavity 4 is coaxial with the first uniform gas cavity 2. The open end 22 of the first uniform gas cavity 2 passes through the open end 41 and extends into the second uniform gas cavity 4. There is a gap between the open end 22 and the bottom and side walls of the second uniform gas cavity 4.

[0036] In this embodiment, a second gas homogenizing cavity 4 is provided at the bottom of the exhaust combustion cavity 11, and is located below the first gas homogenizing cavity 2. It has an open end 41 facing upward and is in the shape of a rotating body, and is coaxial with the first gas homogenizing cavity 2. The carbon black exhaust gas extends from the open end 22 of the first gas homogenizing cavity 2 through the open end 41 into the second gas homogenizing cavity 4. As the cross-sectional area of ​​the second gas homogenizing cavity 4 gradually increases from the bottom to the open end 41, the exhaust gas flow rate gradually decreases, and it will undergo a homogenization process again. In addition, the concentration of the carbon black exhaust gas is generally greater than that of air. Then, the carbon black exhaust gas in the second gas homogenizing cavity 4 will gradually increase in height until it reaches the open end 41, achieving an overflow effect, thereby making the gas distribution more uniform. This forms a continuous, multi-level exhaust gas homogenization process, so that the carbon black exhaust gas can be more fully homogenized before entering the combustion area, providing more uniform exhaust gas conditions for the combustion reaction, and improving combustion efficiency and stability.

[0037] After the carbon black tail gas is further homogenized by the second homogenizing chamber 4, when it is fully mixed with air and burned, the combustion reaction can be made more stable. This is because more uniform tail gas can ensure the stability of fuel supply during the combustion process and avoid combustion fluctuations caused by uneven tail gas distribution, such as flame flickering and incomplete combustion. Stable combustion not only improves energy utilization efficiency and reduces energy waste, but also reduces the amount of nitrogen oxides generated and achieves the goal of low-nitrogen combustion. At the same time, it helps to extend the service life of the equipment and reduce damage to the equipment caused by unstable combustion.

[0038] Furthermore, the cross-sectional area of ​​the second gas homogenizing cavity 4 gradually increases from the bottom to the open end 41 .

[0039] In this embodiment, the second gas homogenizing cavity 4 is designed to gradually increase its cross-sectional area from the bottom to the open end 41, which further enhances its gas homogenizing function. As the cross-sectional area increases, the velocity of the carbon black exhaust gas entering the second gas homogenizing cavity 4 gradually decreases, and the exhaust gas has more time and space to diffuse and homogenize. Compared with a cavity with a constant cross-sectional area, this gradual cross-sectional area can more effectively promote the uniform distribution of various components in the exhaust gas, just like slowly spreading out a ball of uneven gas, so that the carbon black exhaust gas can reach a higher degree of homogenization before entering the combustion area, providing more uniform exhaust conditions for the combustion reaction, improving combustion efficiency and stability, and thus helping to achieve the goal of low-nitrogen combustion.

[0040] Furthermore, it also includes a conical guide block 5, which is arranged at the closed end 21 of the first gas homogenizing cavity 2, with the tip of the conical guide block 5 facing the end of the exhaust gas inlet pipe 13, and the conical guide block 5 is smoothly connected to the closed end 21.

[0041] In this embodiment, the conical guide block 5 is arranged at the closed end of the first gas homogenizing cavity 2, with its tip facing the end of the exhaust gas inlet pipe 13 and smoothly connected to the closed end 21. When the carbon black exhaust gas enters the first gas homogenizing cavity 2 through the exhaust gas inlet pipe 13, the conical guide block 5 can play a precise guiding role, so that the exhaust gas smoothly enters the first gas homogenizing cavity 2 along the shape of the guide block and flows in a predetermined direction. This precise guidance can avoid the occurrence of disordered flow or local impact of the exhaust gas when entering the cavity, ensuring that the exhaust gas can enter the first gas homogenizing cavity in a relatively orderly manner, laying a good foundation for subsequent gas homogenization, mixing and combustion processes.

[0042] The smooth connection between the conical guide block 5 and the closed end 21 and its own conical shape can also improve the flow characteristics of the exhaust gas. When the exhaust gas flows through the guide block, due to its smooth surface and gradually tapering shape, the flow rate of the exhaust gas will change, usually increasing the flow rate in a local area, thereby enhancing the fluidity of the exhaust gas. The enhanced fluidity helps the exhaust gas to flow more smoothly in the first gas homogenizing cavity 2 and subsequent gas channels and other areas, promotes the diffusion and homogenization of the exhaust gas, and improves the mixing effect of the exhaust gas and the air, which is conducive to the combustion reaction to be more fully and stably carried out, and achieve the goal of low-nitrogen combustion.

[0043] Furthermore, the air delivery assembly 3 includes an annular tube body 31, which is arranged on the inner wall of the exhaust gas combustion chamber 11. An annular tube body 31 is arranged under the first partition plate body 14. A plurality of first air outlet holes 32 are opened on the annular tube body 31. An inner annular tube body 33 is arranged in the annular tube body 31. There is a gap between the outer wall of the inner annular tube body 33 and the inner wall of the annular tube body 31. A plurality of second air outlet holes 34 are opened on the inner annular tube body 33. The second air outlet holes 34 face the side away from the first air outlet holes 32. An air input pipe 35 is arranged on the main body 1, and the air input pipe 35 is connected to the inner annular tube body 33.

[0044] In this embodiment, the air delivery assembly 3 includes an annular tube body 31, an inner annular tube body 33 and an air input pipe 35. The annular tube body 31 is arranged on the inner wall of the exhaust gas combustion chamber 11, and the annular tube body 31 is arranged below the first partition plate body 14, and a plurality of first air outlet holes 32 are opened on the annular tube body 31. The inner annular tube body 33 is arranged inside the annular tube body 31, and a plurality of second air outlet holes 34 are opened on it, and the second air outlet holes 34 face the side away from the first air outlet holes 32. The air input pipe 35 is connected with the inner annular tube body 33 and is responsible for conveying external air to the inner annular tube body 33. This structural design allows air to enter the inner annular tube body 33 first, and then enter the annular tube body 31 through the second air outlet holes 34, so that air diffusion can be performed once, and the air can be diffused to various positions in the annular tube body 31 as much as possible, and then the air enters the gas channel 23 through the first air outlet holes 32, so as to complete the full and uniform mixed combustion with the carbon black exhaust gas there.

[0045] Furthermore, a plurality of first air outlet holes 32 are evenly arranged along the circumferential direction of the annular tube body 31 , and the cross-sectional area of ​​the first air outlet holes 32 gradually increases from one end close to the inner wall of the annular tube body 31 to the other end.

[0046] In this embodiment, a plurality of first air outlet holes 32 are evenly arranged in the circumferential direction of the annular tube body 31, and the cross-sectional area of ​​the first air outlet holes 32 gradually increases from one end close to the inner wall of the annular tube body to the other end. This design enables the air to be evenly distributed in the circumferential direction when it is output from the first air outlet holes 32 of the annular tube body 31. Due to the gradual increase in the cross-sectional area, when the air passes through the air outlet holes, the flow rate will be reasonably adjusted according to the change in the cross-sectional area, so that the air can flow out from each air outlet hole in a relatively uniform manner. Uniform air output helps to form a uniform air flow field in the gas channel, creating good conditions for the mixing of air and carbon black exhaust, avoiding problems such as excessive or weak local combustion that may be caused by uneven air distribution, improving combustion efficiency, and achieving low-nitrogen combustion goals.

[0047] Uniform air output can also enhance the mixing effect of air and carbon black exhaust. When air enters the gas channel 23 in a uniform state, the mixing with the carbon black exhaust will be smoother. Because the uniform air flow field can be more effectively intertwined with the flow path of the carbon black exhaust, the two gases are mixed on a smaller scale, which improves the fineness of the gas mixing, and is conducive to a more complete and stable combustion reaction, achieving the goal of low-nitrogen combustion, and also helps to improve combustion efficiency and make full use of the energy in the carbon black exhaust.

[0048] Furthermore, the annular tube body 31 has an annular opening 36 , and a plurality of first air outlet holes 32 are sequentially opened adjacent to each other to form the annular opening 36 .

[0049] In this embodiment, the annular tube body 31 has an annular opening 36, and a plurality of first air outlet holes 32 are sequentially opened adjacent to each other to form the annular opening 36. This design simplifies the structure of air output from the annular tube body, so that air can more conveniently flow out from the annular opening 36. Compared with the case where a single air outlet hole is dispersedly arranged, the structure of the annular opening 36 makes the air output more uniform and dispersed, so that the air and the carbon black tail gas are mixed more fully and evenly.

[0050] Furthermore, the main body 1 also has an annular cavity 6 , which is coaxial with the exhaust gas combustion cavity 11 and is located outside the exhaust gas combustion cavity 11 . The annular cavity 6 has an inlet 61 and an outlet 62 .

[0051] In this embodiment, the main body 1 further has an annular cavity 6, which is coaxial with the exhaust combustion cavity 11 and is located outside the exhaust combustion cavity 11. The annular cavity 6 has an inlet 61 and an outlet 62. The annular cavity 6 can be used as an auxiliary space and play a variety of roles in the combustion process of carbon black exhaust gas. On the one hand, a cooling fluid can be introduced into the annular cavity 6 to absorb the heat generated by the combustion of carbon black exhaust gas, thereby playing a role in heat energy recovery and utilization; on the other hand, the combustion temperature can be adjusted and the combustion environment can be improved.

[0052] Furthermore, the cross-sectional area of ​​the annular cavity 6 gradually decreases from one end close to the bottom of the exhaust gas combustion cavity 11 to the other end.

[0053] In this embodiment, Figure 3 As shown, the annular cavity 6 is used to pass cooling water. In addition, the cross-sectional area of ​​the annular cavity 6 gradually decreases from one end close to the bottom of the exhaust gas combustion chamber 11 to the other end, so that the volume of the cooling water can be gradually reduced from one end close to the bottom of the exhaust gas combustion chamber 11 to the other end. Then the cooling capacity of the annular cavity 6 will also gradually decrease, so that the temperature of the exhaust gas combustion chamber 11 can be gradually increased from the bottom to the top, so that the concentration of the carbon black exhaust gas at the bottom of the exhaust gas combustion chamber 11 can be the highest. Due to the effect of gravity, the carbon black exhaust gas is more uniform when overflowing through the open end 41 of the second uniform gas cavity 4, thereby further improving the uniformity of the carbon black exhaust gas.

[0054] Furthermore, the first partition plate body 14 and the second partition plate body 15 are arranged to be inclined.

[0055] In this embodiment, Figure 3 As shown, the first partition body 14 and the second partition body 15 are arranged at an angle, and this inclined arrangement changes the flow path of the gas when passing through the gas channel. When the air and carbon black tail gas flow in the gas channel, the inclined partition body changes their flow direction, forming a more complex flow path. Compared with the horizontally arranged partition body, the inclined arrangement enables the gas to flow and mix on a smaller scale, improves the fineness of the gas flow, and is conducive to a more complete and stable combustion reaction, thereby achieving the goal of low-nitrogen combustion.

[0056] Furthermore, an ignition electrode is provided in the exhaust gas combustion chamber 11 .

[0057] In this embodiment, an ignition electrode is provided in the exhaust combustion chamber 11, and the existence of the ignition electrode enables the device to realize the ignition start function, and can generate a high-temperature spark sufficient to initiate a combustion reaction in the exhaust combustion chamber 11, thereby igniting the mixture of carbon black exhaust gas and air and starting the combustion process.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A carbon black tail gas staged low nitrogen combustion equipment, characterized in that: include, A main body (1), the main body (1) having an exhaust gas combustion chamber (11), the exhaust gas combustion chamber (11) being used for burning and treating carbon black exhaust gas, the top and bottom of the exhaust gas combustion chamber (11) respectively having a smoke exhaust pipe (12) and an exhaust gas inlet pipe (13), the exhaust gas inlet pipe (13) being used for conveying the carbon black exhaust gas into the exhaust gas combustion chamber (11), a first gas-uniform cavity (2), the first gas-uniform cavity (2) being arranged in the exhaust gas combustion cavity (11), the first gas-uniform cavity (2) having a closed end (21) and an open end (22), the open end (22) facing the bottom of the exhaust gas combustion cavity (11), one end of the exhaust gas inlet pipe (13) extending into the first gas-uniform cavity (2) and facing the closed end (21), and the other end being located outside the exhaust gas combustion cavity (11), and a gas channel (23) being formed between the outer wall of the first gas-uniform cavity (2) and the inner wall of the exhaust gas combustion cavity (11), An air delivery component (3), the air delivery component (3) being arranged on the main body (1), and the air delivery component (3) being used to deliver air into the gas channel (23).

2. A carbon black tail gas staged low nitrogen combustion equipment according to claim 1, characterized in that: The inner wall of the exhaust gas combustion chamber (11) is provided with a plurality of first partition plates (14), and a gap is provided between the first partition plates (14) and the outer wall of the first uniform gas chamber (2). The outer wall of the first uniform gas cavity (2) is provided with a plurality of second partition plates (15), a gap is provided between the second partition plates (15) and the inner wall of the exhaust gas combustion cavity (11), and the plurality of first partition plates (14) and the plurality of second partition plates (15) are alternately distributed along the conveying direction of the gas channel (23).

3. A carbon black tail gas staged low nitrogen combustion equipment according to claim 2, characterized in that: The exhaust gas combustion chamber (11) and the first gas homogenizing chamber (2) are both in the shape of a body of revolution, and the exhaust gas combustion chamber (11) and the first gas homogenizing chamber (2) are coaxial. The cross-sectional area of ​​the first gas homogenizing cavity (2) gradually increases from the closed end (21) to the open end (22).

4. The carbon black tail gas staged low nitrogen combustion equipment according to claim 3 is characterized in that: The bottom of the exhaust gas combustion chamber (11) also has a second uniform gas cavity (4), the second uniform gas cavity (4) is located below the first uniform gas cavity (2), the second uniform gas cavity (4) has an open end (41), the open end (41) faces upward, the second uniform gas cavity (4) is a rotating body, the second uniform gas cavity (4) is coaxial with the first uniform gas cavity (2), the open end (22) of the first uniform gas cavity (2) passes through the open end (41) and extends into the second uniform gas cavity (4), and there is a gap between the open end (22) and the bottom and side walls of the second uniform gas cavity (4).

5. The carbon black tail gas staged low nitrogen combustion equipment according to claim 4 is characterized in that: The cross-sectional area of ​​the second gas homogenizing cavity (4) gradually increases from the bottom to the open end (41).

6. The carbon black tail gas staged low nitrogen combustion equipment according to claim 1, characterized in that: Also includes, A conical guide block (5), the conical guide block (5) being arranged at the closed end (21) of the first gas homogenizing cavity (2), the tip of the conical guide block (5) facing the end of the exhaust gas inlet pipe (13), the conical guide block (5) being smoothly connected to the closed end (21).

7. The carbon black tail gas staged low nitrogen combustion equipment according to claim 2 is characterized in that: The air delivery component (3) comprises: an annular tube body (31), the annular tube body (31) being arranged on the inner wall of the exhaust gas combustion chamber (11), the annular tube body (31) being arranged below the first partition plate body (14), the annular tube body (31) being provided with a plurality of first gas outlet holes (32), an inner annular tube body (33), the inner annular tube body (33) being arranged inside the annular tube body (31), a gap being provided between an outer wall of the inner annular tube body (33) and an inner wall of the annular tube body (31), a plurality of second air outlet holes (34) being provided on the inner annular tube body (33), the second air outlet holes (34) being oriented toward a side away from the first air outlet hole (32), An air input pipe (35), wherein the air input pipe (35) is arranged on the main body (1), and the air input pipe (35) is connected to the inner annular pipe body (33).

8. The carbon black tail gas staged low nitrogen combustion equipment according to claim 7, characterized in that: A plurality of the first air outlet holes (32) are evenly arranged along the annular direction of the annular tube body (31), and the cross-sectional area of ​​the first air outlet holes (32) gradually increases from one end close to the inner wall of the annular tube body (31) to the other end.

9. The carbon black tail gas staged low nitrogen combustion equipment according to claim 8, characterized in that: The annular tube body (31) is provided with an annular opening (36), and a plurality of the first air outlet holes (32) are sequentially adjacently opened to form the annular opening (36).

10. The carbon black tail gas staged low nitrogen combustion equipment according to claim 1, characterized in that: The main body (1) further comprises an annular cavity (6), wherein the annular cavity (6) is coaxial with the exhaust gas combustion cavity (11), and the annular cavity (6) is located outside the exhaust gas combustion cavity (11). The annular chamber (6) has an inlet (61) and an outlet (62).

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