A carbon black particle generating device having a high-efficiency mixing and flame stabilizing structure

Abstract

The utility model discloses a kind of carbon black particle generating device with high-efficiency mixing and flame stable structure belong to carbon black preparation technical field, including mixing pipe, the air inlet is installed on the mixing pipe, the mixing pipe top is equipped with cover plate, the combustion furnace is installed in the mixing pipe bottom, the combustion furnace bottom is equipped with flue, wherein, fuel gas inlet pipe is installed in the mixing pipe, and the fuel gas inlet pipe is through in cover plate, spiral flow guide groove in the mixing pipe of the utility model prolongs gas mixing path, enhances turbulent flow disturbance, breaks gas stratification, promotes combustion-supporting gas and fuel gas diffusion uniformity, and the conical porous round plate on fuel gas inlet pipe forcedly shunts, uniformly distributes gas, optimizes airflow field distribution, the cooperation of both greatly strengthens fuel and air mixing efficiency, avoid the problem of insufficient combustion due to uneven mixing.

Description

Technical Field

[0001] This utility model relates to the field of carbon black preparation technology, specifically to a carbon black particle generating device with efficient mixing and flame stabilization structure. Background Technology

[0002] Carbon black is a byproduct of the incomplete combustion of hydrocarbons, primarily produced through combustion processes such as coal, fuel oil, and biomass combustion. In daily life, it is mainly derived from vehicle exhaust, coal combustion, and biomass burning. Carbon black exhibits nanoscale particle characteristics, with a particle size primarily ranging from 10 to 500 nm, and possesses a large specific surface area and a unique pore structure. These properties enable it to play a crucial role in numerous industrial sectors, particularly in rubber, plastics, coatings, and new energy industries.

[0003] Existing carbon black combustion furnaces generally suffer from problems such as uneven fuel mixing, poor flame stability, severe carbon black agglomeration, low collection efficiency, and poor system integration. Current combustion devices often employ a simple straight-through structure, which makes it difficult to achieve sufficient airflow disturbance and a stable combustion environment, resulting in unstable carbon black particle production and low efficiency. Therefore, a carbon black particle generating device with a highly efficient mixing and flame stabilization structure is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a carbon black particle generating device with a highly efficient mixing and flame-stabilizing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a carbon black particle generating device with a high-efficiency mixing and flame stabilizing structure, comprising a mixing tube, an air inlet installed on the mixing tube, a cover plate installed on the top of the mixing tube, a combustion furnace installed at the bottom of the mixing tube, and a flue pipe installed at the bottom of the combustion furnace;

[0006] The mixing pipe is equipped with a fuel intake pipe, which extends through the cover plate.

[0007] As a further preferred embodiment of this technical solution: the mixing pipe connects the air inlet, the cover plate, and the combustion furnace respectively. The air inlet adopts a variable diameter structure, which, in conjunction with the filter screen and the conical porous plate, balances the compressed air flow field, reduces flame vibration, and achieves stable combustion. At the same time, the cover plate seals the top of the mixing pipe, thereby ensuring the airtightness of the mixing pipe, and its installation method allows for quick assembly and disassembly.

[0008] As a further preferred embodiment of this technical solution: fuel gas is precisely delivered through the fuel inlet pipe, and the mixing effect is enhanced by the use of a conical porous circular plate, while the combustion furnace provides space for the combustion of the mixed gas, and the combustion products are directionally discharged through the exhaust pipe.

[0009] As a further preferred embodiment of this technical solution: a spiral guide groove is provided inside the mixing pipe, which extends the gas mixing path and promotes full disturbance and mixing of the combustion-supporting gas and the fuel gas.

[0010] As a further preferred embodiment of this technical solution: a filter screen is installed inside the air inlet, so that the compressed gas can be evenly introduced into the mixing pipe through the filter screen.

[0011] As a further preferred embodiment of this technical solution: a conical porous disc is installed on the fuel intake pipe and inside the mixing pipe. The conical porous disc forces the flow and distributes the gas evenly, optimizing the airflow field distribution, thereby enhancing the mixing efficiency of fuel and air and improving combustion completeness.

[0012] As a further preferred embodiment of this technical solution: two observation mirrors and an ignition needle are respectively installed on the combustion furnace. The flame state inside the combustion furnace is observed in real time through the observation mirrors, while the ignition needle is used to provide initial ignition energy and improve ignition reliability.

[0013] The two fire-observing mirrors are symmetrically arranged, and the ignition needle is located below the two fire-observing mirrors.

[0014] As a further preferred embodiment of this technical solution: a smoke outlet is provided on one side of the exhaust pipe, through which the smoke containing carbon black particles generated by the combustion reaction inside the device is discharged.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the spiral guide groove in the mixing pipe extends the gas mixing path, enhances turbulence disturbance, breaks gas stratification, and improves the uniformity of combustion gas and fuel gas diffusion. In addition, the conical porous plate on the fuel inlet pipe forces diversion and uniform gas distribution, and optimizes the airflow field distribution. The combination of the two greatly enhances the fuel and air mixing efficiency and avoids the problem of incomplete combustion caused by uneven mixing.

[0017] 2. The air inlet of this utility model adopts a variable diameter structure, which, together with the filter screen, balances the compressed air flow field and reduces flame shaking. The combustion furnace is a trumpet-shaped structure with gradually narrowing ends, which guides the airflow to flow stably. The inverted T-shaped asymmetrical exhaust pipe (long exhaust end, short closed end) can reduce airflow backflow and reduce the interference of the rear device on the negative pressure inside the furnace. The multi-structure collaboration ensures continuous and stable combustion of the flame.

[0018] 3. The thorough fuel mixing and stable flame combustion environment in this utility model avoid excessive collision and agglomeration of carbon black particles caused by local high temperature or airflow turbulence, effectively reducing carbon black agglomeration, improving the uniformity of carbon black product particles, and ensuring the quality of carbon black products.

[0019] 4. In this utility model, the flue gas containing carbon black particles generated by stable combustion is directionally discharged through the exhaust pipe. The long exhaust end of the inverted T-shaped asymmetrical exhaust pipe forces the airflow to flow in a directional manner, ensuring that the flue gas is stably transported to the subsequent collection stage, reducing the retention or loss of carbon black particles caused by airflow fluctuations, and indirectly improving the carbon black collection efficiency.

[0020] 5. The installation method of components such as the cover plate, fuel inlet pipe and air inlet nozzle in this utility model enables the quick disassembly and replacement of the entire device, thereby greatly reducing maintenance difficulty and time cost. In addition, the high-temperature resistant glass viewing mirrors on both sides of the combustion furnace facilitate real-time monitoring of the flame pattern, assist in precise adjustment of combustion parameters, improve the ease of operation and operational stability, and effectively solve the problem of poor integration of existing devices. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a carbon black particle generating device with a high-efficiency mixing and flame stabilizing structure according to the present invention;

[0022] Figure 2 This is a schematic diagram of the explosion structure of a carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to the present invention.

[0023] Figure 3 This is a schematic diagram of the installation cross-sectional structure of the mixing pipe, air inlet, cover plate and combustion air inlet pipe in a carbon black particle generating device with efficient mixing and flame stabilization structure according to the present invention.

[0024] Figure 4 This is a schematic diagram of the installation cross-sectional structure of the combustion furnace and exhaust pipe in a carbon black particle generating device with a high-efficiency mixing and flame stabilization structure according to the present invention.

[0025] In the diagram: 1. Mixing pipe; 11. Spiral guide channel; 2. Air inlet; 21. Filter screen; 3. Cover plate; 4. Fuel inlet pipe; 41. Conical perforated plate; 5. Combustion furnace; 51. Observation mirror; 52. Ignition needle; 6. Exhaust pipe; 61. Smoke outlet. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example

[0028] Please see Figures 1-4This utility model provides a technical solution: a carbon black particle generating device with a high-efficiency mixing and flame stabilizing structure, including a mixing pipe 1, an air inlet 2 threadedly connected to the mixing pipe 1, a cover plate 3 threadedly connected to the top of the mixing pipe 1, a combustion furnace 5 threadedly connected to the bottom of the mixing pipe 1 via a flange, and a flue pipe 6 threadedly connected to the bottom of the combustion furnace 5 via a flange.

[0029] The mixing pipe 1 is equipped with a fuel intake pipe 4, which extends through the cover plate 3.

[0030] In this embodiment, specifically: the mixing pipe 1 is used to receive the air inlet 2, the cover plate 3 and the combustion furnace 5 respectively. The air inlet 2 adopts a variable diameter structure, which, in conjunction with the filter screen 21 and the conical porous plate 41, effectively balances the compressed air flow field, reduces flame vibration, and achieves stable combustion. At the same time, the cover plate 3 seals the top of the mixing pipe 1, thereby ensuring the good airtightness of the mixing pipe 1. The installation method of the cover plate 3 also enables it to be quickly disassembled and assembled.

[0031] In this embodiment, specifically: the fuel inlet pipe 4 is used to accurately deliver fuel gas, and the conical porous disc 41 is used to enhance the mixing effect; the combustion furnace 5 is used to provide space for combustion of the mixed gas; and the exhaust pipe 6 is used to directionally discharge the combustion products.

[0032] In this embodiment, specifically: a spiral guide groove 11 is provided inside the mixing pipe 1. By providing the spiral guide groove 11, the gas mixing path is extended, which promotes the combustion-supporting gas and the fuel gas to be fully disturbed and mixed, thereby improving the mixing efficiency and stability.

[0033] In this embodiment, specifically: a filter screen 21 is installed inside the air inlet 2. The filter screen 21 ensures that the compressed gas enters the mixing pipe 1 evenly, thereby avoiding excessively strong or weak local airflow.

[0034] It should be further explained that the mesh size of the filter screen can be 100-150.

[0035] In this embodiment, specifically: a conical porous disc 41 is welded on the fuel intake pipe 4 and inside the mixing pipe 1. The conical porous disc 41 is used for forced flow splitting and uniform gas distribution, optimizing the airflow field distribution, thereby enhancing the mixing efficiency of fuel and air, and thus improving the combustion completeness.

[0036] In this embodiment, specifically: two observation mirrors 51 and ignition needles 52 are installed on the combustion furnace 5. The observation mirrors 51 are used to observe the flame state inside the combustion furnace 5 in real time, and the reaction parameters are adjusted by the changes in the flame state. The ignition needles 52 are used to provide initial ignition energy to trigger the combustion reaction, and to improve ignition reliability and avoid start-up failures and safety hazards.

[0037] The two observation mirrors 51 are symmetrically arranged, and the ignition needle 52 is located below the two observation mirrors 51.

[0038] In this embodiment, specifically: a smoke outlet 61 is provided on one side of the smoke exhaust pipe 6, and the smoke outlet 61 is used to discharge the smoke containing carbon black particles generated by the combustion reaction in the device.

[0039] Working principle: During operation, compressed air enters the mixing pipe 1 through the variable diameter inlet 2. The built-in filter 21 filters impurities and disperses the airflow into a uniform airflow, thereby avoiding excessively strong or weak local airflow. Subsequently, the airflow makes initial contact with the fuel gas delivered from the fuel inlet pipe 4. The spiral guide groove 11 on the inner wall of the mixing pipe 1 extends the gas mixing path, forcing the airflow to flow along the spiral trajectory, forming turbulent disturbance, breaking the gas stratification, and improving the diffusion uniformity of combustion gas and fuel gas. At the same time, the conical porous circular plate 41 on the fuel inlet pipe 4 forces the fuel airflow to be split and uniformly distributed, further optimizing the airflow field distribution, allowing the fuel and air to mix fully, laying the foundation for subsequent complete combustion.

[0040] The mixed gas enters the combustion furnace 5, and the initial ignition energy is provided by the ignition needle 52 at the bottom of the combustion furnace 5 to quickly trigger the combustion reaction. The design of the ignition needle 52 improves the ignition reliability and avoids start-up failures and safety hazards. The combustion furnace 5 adopts a funnel-shaped structure with tapered ends to guide the airflow to flow stably. At the same time, the uniform airflow formed in the early premixing stage, together with the air inlet 2 and the conical porous plate 41, effectively balances the flow field, reduces flame shaking, and ensures continuous and stable combustion, thereby reducing carbon black agglomeration and improving the uniformity of carbon black products.

[0041] High-temperature resistant glass viewing mirrors 51 are installed on both sides of the combustion furnace 5. Operators can observe the flame pattern (such as flame color and shape) in the furnace in real time through the viewing mirrors 51. They can judge whether the combustion is complete and stable based on the flame state. Then, by adjusting the flow ratio of fuel and combustion-supporting gas (with the help of a high-precision mass flow meter), the combustion parameters can be precisely controlled to ensure that the device is always in the optimal combustion state. Finally, the flue gas containing carbon black particles generated by combustion enters the exhaust pipe 6 and is finally stably discharged to the subsequent collection stage through the exhaust port 61.

[0042] It is worth further elaborating that the exhaust pipe 6 adopts an inverted T-shaped asymmetrical design (long exhaust end, short closed end). The long exhaust end forces the airflow to flow in a directional direction, reducing the backflow of airflow at the short end. At the same time, the longer exhaust end structure can reduce the interference of the rear collection device on the negative pressure inside the furnace and avoid the impact of external gas pressure fluctuations on combustion stability.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure, comprising a mixing tube (1), characterized in that: An air inlet (2) is installed on the mixing pipe (1), a cover plate (3) is installed on the top of the mixing pipe (1), a combustion furnace (5) is installed at the bottom of the mixing pipe (1), and a flue pipe (6) is installed at the bottom of the combustion furnace (5). The mixing pipe (1) is equipped with a fuel intake pipe (4), and the fuel intake pipe (4) passes through the cover plate (3).

2. The carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to claim 1, characterized in that: The mixing pipe (1) is provided with a spiral guide groove (11).

3. The carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to claim 1, characterized in that: A filter screen (21) is installed inside the air inlet (2).

4. The carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to claim 1, characterized in that: A conical porous disc (41) is installed on the fuel intake pipe (4) and inside the mixing pipe (1).

5. A carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to claim 1, characterized in that: Two observation mirrors (51) and an ignition needle (52) are respectively installed on the combustion furnace (5); The two fire-observing mirrors (51) are symmetrically arranged, and the ignition needle (52) is located below the two fire-observing mirrors (51).

6. The carbon black particle generating device with a high-efficiency mixing and flame-stabilizing structure according to claim 1, characterized in that: A smoke outlet (61) is provided on one side of the exhaust pipe (6).

Images