Graphitization furnace for continuously producing low-nitrogen carburant

Abstract

The utility model discloses a graphitization furnace for continuously producing a low-nitrogen carburant, and relates to the technical field of carburant production equipment. An exhaust fan is fixedly mounted on the furnace body, an air inlet of the exhaust fan is communicated with the furnace body, an exhaust port of the exhaust fan is communicated with a conveying guide pipe and a neutralizing box, neutralizing liquid can be contained in the neutralizing box, and one end, deviating from the exhaust fan, of the conveying guide pipe extends into the neutralizing liquid in the neutralizing box. The filter box is communicated with the neutralizing box through a connecting pipeline, an exhaust pipe is arranged on the filter box, and a filter plate, a sponge block and an activated carbon plate are sequentially arranged in the filter box in the direction from the connecting pipeline to the exhaust pipe. According to the utility model, tail gas of the furnace body is discharged into the neutralization box for neutralization reaction through the exhaust fan, and then is discharged into the filter box to be filtered through the multiple filter structures, so that various harmful components in the waste gas can be effectively removed, the pollution to the environment and the harm to the health of operators are reduced, and the production of the graphitization furnace better meets the environmental protection requirement.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbon raiser production equipment, specifically, it relates to a graphitization furnace for continuous production of low-nitrogen carbon raisers. Background Technology

[0002] A graphitization furnace for recarburizers is an industrial device used to graphitize recarburizers. Recarburizers are materials used to increase the carbon content in molten iron and other metals. The function of the graphitization furnace is to transform the amorphous carbon or disordered graphite structure in the recarburizer into a more regular graphite crystal structure through high-temperature heat treatment, thereby improving the performance of the recarburizer. The graphitization furnace mainly uses electrical energy to generate high temperatures to achieve the graphitization of the recarburizer. It usually adopts resistance heating or induction heating. However, existing continuous production low-nitrogen recarburizer graphitization furnaces cannot effectively treat and utilize the exhaust gas generated during use, resulting in harmful substances in the exhaust gas posing a hazard to workers and the surrounding environment, thus hindering practical use.

[0003] Chinese patent CN218002234U discloses a graphitization furnace for continuous production of low-nitrogen carbon additives. This device uses a blower to allow exhaust gas from the furnace to sequentially pass through an outlet pipe, a circulation pipe, and an exhaust pipe into a purification chamber. As the exhaust gas passes through the circulation pipe, it absorbs heat from the water in the tank, thus recovering and utilizing the waste heat. Simultaneously, a water pump is activated, pumping water from a storage tank to an outlet pipe via a pumping pipe. The outlet pipe then delivers the water to a spray plate and discharges it back into the storage tank, forming a water curtain to purify the exhaust gas. However, this device relies on a relatively simple method of filtration—using the water curtain and filter plate—to reduce the overall purification effect.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a graphitization furnace for continuous production of low-nitrogen carbon additives, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A graphitization furnace for continuous production of low-nitrogen carbon raiser includes: a furnace body on which an exhaust fan is fixedly installed, the air inlet of the exhaust fan being connected to the furnace body, and the exhaust outlet of the exhaust fan being connected to a conveying conduit.

[0008] A neutralization tank, which can contain a neutralizing liquid, and the delivery conduit extends from the end opposite to the exhaust fan into the neutralizing liquid inside the neutralization tank;

[0009] A filter box is arranged in communication with the neutralization tank through a connecting pipe, and an exhaust pipe is arranged on the filter box, and a filter plate, a sponge block and an activated carbon plate are sequentially arranged in the filter box along the direction from the connecting pipe to the exhaust pipe.

[0010] Optionally, the conveying pipe is in L-shaped structure.

[0011] Optionally, a rotating shaft is rotatably connected to the neutralization tank, and a plurality of stirring plates are fixedly connected to the rotating shaft, and the plurality of stirring plates are arranged in the neutralization tank along the circumference of the rotating shaft, and a driving assembly is arranged on the neutralization tank to drive the rotating shaft to rotate.

[0012] Optionally, the driving assembly comprises:

[0013] A second rotating shaft is rotatably arranged in the conveying pipe, and a plurality of air deflectors are fixedly connected to the second rotating shaft, and the plurality of air deflectors are arranged along the circumference of the second rotating shaft, and a driving end of the second rotating shaft extends to the outside of the conveying pipe.

[0014] A first gear is sleeved on the rotating shaft.

[0015] A third rotating shaft is rotatably arranged on the neutralization tank, and a second gear is sleeved on the third rotating shaft and engaged with the first gear.

[0016] A first rotating shaft is rotatably arranged on the neutralization tank, and the first rotating shaft and the third rotating shaft are connected through a first belt transmission mechanism, and the first rotating shaft and the second rotating shaft are connected through a second belt transmission mechanism.

[0017] Optionally, the diameter of the first gear is greater than the diameter of the second gear.

[0018] Optionally, the neutralization liquid is preferably an alkaline solution.

[0019] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0020] 1. By arranging the neutralization tank, the sponge block, the filter plate and the activated carbon plate, the tail gas of the furnace body is discharged into the neutralization tank for neutralization reaction, and then discharged into the filter box for filtration through the multiple filtration structure, which can effectively remove various harmful components in the exhaust gas, reduce the pollution to the environment and the harm to the health of the operators, and make the production of the graphitization furnace more in line with the environmental protection requirements.

[0021] 2、By being provided with the driving assembly, the rotating shaft and the stirring plate, the rotating shaft is driven to rotate by the driving assembly, and the stirring plate is driven to stir the neutralization liquid, the flow energy of the waste gas in the conveying pipe is ingeniously utilized to drive the stirring device in the neutralization tank, energy recycling and reuse are realized, the energy consumption of the equipment is reduced, meanwhile, the uniformity and efficiency of the neutralization reaction are enhanced, and it is ensured that the acidic harmful gas in the waste gas can be absorbed and reacted by the neutralization liquid as much as possible.

[0022] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0024] Figure 1 It is a structural schematic view of the whole application;

[0025] Figure 2 It is a front view of the application;

[0026] Figure 3 It is a structural schematic view of the driving assembly of the application;

[0027] Figure 4 It is a structural schematic view of the inside of the neutralization tank and the filter tank.

[0028] In the drawings, the component list represented by each number is as follows:

[0029] 1, furnace body; 2, activated carbon plate; 3, exhaust fan; 4, conveying pipe; 5, neutralization tank; 6, filter tank; 7, exhaust pipe; 8, connecting pipe; 9, driving assembly; 91, first gear; 92, second gear; 93, first belt transmission mechanism; 94, first rotating shaft; 95, second belt transmission mechanism; 96, second rotating shaft; 97, air deflector; 98, third rotating shaft; 10, rotating shaft; 11, neutralization liquid; 12, stirring plate; 13, filter plate; 14, sponge block.

[0030] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] The application will now be further described in detail with reference to the accompanying drawings.

[0032] Please refer to Figures 1-4As shown, in the embodiment, a continuous production low-nitrogen recarburizer graphitization furnace is provided, which comprises a furnace body 1, a suction fan 3 fixedly installed on the furnace body 1, an air inlet of the suction fan 3 communicated with the furnace body 1, a conveying pipe 4 communicated with an air outlet of the suction fan 3, a neutralization tank 5, which can contain neutralization liquid 11, the conveying pipe 4 extending to the neutralization liquid 11 in the neutralization tank 5 at an end away from the suction fan 3, a filter tank 6, which is communicated with the neutralization tank 5 through a connecting pipe 8, and an exhaust pipe 7 arranged on the filter tank 6, and a filter plate 13, a sponge block 14 and an activated carbon plate 2 arranged in the filter tank 6 in sequence along the connecting pipe 8 to the exhaust pipe 7.

[0033] Specifically, in the production process of the graphitization furnace, the waste gas generated in the furnace body 1 is extracted by the air inlet of the suction fan 3, then the waste gas enters the conveying pipe 4 through the air outlet of the suction fan 3, and since the conveying pipe 4 is communicated with the neutralization tank 5 and extends to the neutralization liquid 11 in the neutralization tank 5 at an end, the waste gas is forced to enter the neutralization liquid 11, the acidic harmful gas (such as sulfur dioxide) in the waste gas reacts with the neutralization liquid 11 to be preliminarily absorbed and purified, and the gas after the preliminary treatment of the neutralization tank 5 enters the filter tank 6 through the connecting pipe 8, in the filter tank 6, the gas passes through the filter plate 13, the sponge block 14 and the activated carbon plate 2 in sequence, the filter plate 13 can remove the solid particle impurities in the gas, the sponge block 14 can further adsorb some small particles and part of water vapor, and the activated carbon plate 2 can adsorb the residual harmful gas (such as the acidic gas not completely neutralized, a small amount of nitrogen oxides, etc.) and odor substances in the waste gas by using its porous structure and strong adsorption performance, and finally the purified gas is discharged from the exhaust pipe 7 of the filter tank 6, and this structure forms a relatively complete waste gas purification system, which can effectively remove various harmful components in the waste gas by extracting the waste gas from the source (the furnace body 1) and sequentially performing neutralization and filtration treatment, thereby reducing the pollution to the environment and the harm to the health of the operators, making the production of the graphitization furnace more in line with the environmental protection requirements, and meanwhile, by integrating the various functional components together, the overall installation, maintenance and management of the equipment are facilitated, and the stability and reliability of the production system are improved.

[0034] It should be noted that, in the embodiment, the working principle of the graphitization of the recarburizer in the furnace body 1 is the prior art, which is not described here.

[0035] In the embodiment, as shown in Figure 1 , Figure 2 and Figure 4 , the conveying pipe 4 has an L-shaped structure.

[0036] In the embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the neutralization tank 5 is rotatably connected with a rotating shaft 10, and a plurality of stirring plates 12 are fixedly connected to the rotating shaft 10 and arranged along the circumference of the rotating shaft 10 inside the neutralization tank 5. The neutralization tank 5 is provided with a driving assembly 9 for driving the rotating shaft 10 to rotate. The driving assembly 9 includes a second rotating shaft 96 rotatably arranged in the conveying pipe 4, a plurality of air deflectors 97 fixedly connected to the second rotating shaft 96 and arranged along the circumference of the second rotating shaft 96, a first gear 91 sleeved on the rotating shaft 10, a third rotating shaft 98 rotatably arranged on the neutralization tank 5, a second gear 92 sleeved on the third rotating shaft 98 and engaged with the first gear 91, and a first rotating shaft 94 rotatably arranged on the neutralization tank 5 and connected with the third rotating shaft 98 through a first belt transmission mechanism 93. The first rotating shaft 94 is connected with the second rotating shaft 96 through a second belt transmission mechanism 95. The diameter of the first gear 91 is greater than that of the second gear 92. Specifically, when the waste gas flows in the conveying pipe 4, the waste gas pushes the air deflectors 97 and drives the second rotating shaft 96 to rotate because the air deflectors 97 are fixedly connected to the second rotating shaft 96 and arranged along the circumference of the second rotating shaft 96. The rotation of the second rotating shaft 96 is transmitted to the first rotating shaft 94 through the second belt transmission mechanism 95, and the first rotating shaft 94 drives the third rotating shaft 98 to rotate through the first belt transmission mechanism 93. The second gear 92 on the third rotating shaft 98 is engaged with the first gear 91 on the rotating shaft 10. Because the diameter of the first gear 91 is greater than that of the second gear 92, the speed reduction transmission is realized, so that the rotating shaft 10 rotates at a suitable speed, and in turn drives the stirring plates 12 to stir the neutralizing liquid 11 in the neutralization tank 5 at a stable speed. The flow energy of the waste gas in the conveying pipe 4 is ingeniously utilized to drive the stirring device in the neutralization tank 5, so that the energy is recycled and reused, the energy consumption of the equipment is reduced, the uniformity and efficiency of the neutralization reaction are improved, and it is ensured that the acidic harmful gas in the waste gas can be absorbed and reacted with the neutralizing liquid 11 as much as possible. It should be noted that in other embodiments, the driving assembly 9 can also be a three-phase motor or other mechanism capable of driving the rotating shaft 10 to rotate.

[0037] In the present embodiment, as shown in Figure 4As shown, the neutralizing liquid 11 is preferably a basic solution. Specifically, the basic solution is selected as the neutralizing liquid 11 because there can be acidic harmful gases (such as sulfur dioxide, etc.) in the graphitization furnace exhaust gas. When the exhaust gas is introduced into the basic solution, the acidic gases react with the basic substances in the basic solution to form an acid-base neutralization reaction. For example, if sodium hydroxide solution is used as the neutralizing liquid 11, sulfur dioxide reacts with it to form sodium sulfite and water, thereby converting the acidic harmful gas into a harmless or low-hazard substance, achieving preliminary purification of the acidic components in the exhaust gas. The basic solution has good absorption and neutralization capacity for acidic gases, can effectively remove the acidic harmful components in the exhaust gas, reduce the acidity and corrosiveness of the exhaust gas, protect the subsequent filtration equipment and pipelines from the erosion of acidic gases, and prolong the service life of the equipment.

[0038] Working principle:

[0039] In the production process of the graphitization furnace, the exhaust gas generated in the furnace body 1 is extracted through the air inlet of the air extractor 3 under the action of the air extractor 3, and then the exhaust gas enters the conveying pipe 4 through the air outlet of the air extractor 3. Since the conveying pipe 4 is communicated with the neutralizing tank 5 and the tail end thereof extends into the neutralizing liquid 11 in the neutralizing tank 5, the exhaust gas is forced to flow into the neutralizing liquid 11, and the acidic harmful gas (such as sulfur dioxide) in the exhaust gas is preliminarily absorbed and purified by chemical reaction with the neutralizing liquid 11. At the same time, when the exhaust gas flows in the conveying pipe 4, the guide vanes 97 are fixed on the second rotating shaft 96 and arranged along the circumferential direction of the second rotating shaft 96, so that the exhaust gas pushes the guide vanes 97 and drives the second rotating shaft 96 to rotate. The rotation of the second rotating shaft 96 is transmitted to the first rotating shaft 94 through the second belt transmission mechanism 95, and the first rotating shaft 94 drives the third rotating shaft 98 to rotate through the first belt transmission mechanism 93. The second gear 92 on the third rotating shaft 98 is engaged with the first gear 91 on the rotating shaft 10. Since the diameter of the first gear 91 is larger than that of the second gear 92, the speed reduction transmission is realized, so that the rotating shaft 10 rotates at a suitable speed, and further drives the stirring plate 12 to stir the neutralizing liquid 11 in the neutralizing tank 5 at a stable speed. Finally, the gas treated preliminarily in the neutralizing tank 5 enters the filtering tank 6 through the connecting pipeline 8. In the filtering tank 6, the gas successively passes through the filter plate 13, the sponge block 14 and the activated carbon plate 2. The filter plate 13 can remove solid particle impurities in the gas, the sponge block 14 can further adsorb some small particles and part of water vapor, and the activated carbon plate 2 can adsorb residual harmful gas (such as acidic gas which is not completely neutralized, a small amount of nitrogen oxides, etc.) and odor substances in the exhaust gas by using the porous structure and strong adsorption performance thereof. Finally, the purified gas is discharged from the exhaust pipe 7 of the filtering tank 6. This structure forms a relatively complete exhaust gas purification system. The exhaust gas is extracted from the source (furnace body 1), and is treated by neutralization and filtration in sequence, so that various harmful components in the exhaust gas can be effectively removed, the pollution to the environment and the harm to the health of the operators are reduced, the production of the graphitization furnace is more in line with the environmental protection requirements, and meanwhile, by integrating the various functional components together, the overall installation, maintenance and management of the equipment are facilitated, and the stability and reliability of the production system are improved.

[0040] The utility model is not limited to the above-mentioned embodiment, any person should know that the structural change made under the enlightenment of the utility model, any technical scheme with the same or similar to the utility model falls into the protection scope of the utility model. The utility model does not describe the technology, shape, configuration part in detail and is the known technology.

Claims

1. A graphitization furnace for continuous production of low-nitrogen carbon raisers, characterized in that, include: A furnace body (1) is fixedly installed with an exhaust fan (3). The air inlet of the exhaust fan (3) is connected to the furnace body (1), and the exhaust outlet of the exhaust fan (3) is connected to a conveying pipe (4). Neutralization box (5), which can contain neutralizing liquid (11), and the delivery conduit (4) extends from the end opposite to the exhaust fan (3) into the neutralizing liquid (11) inside the neutralization box (5); The filter box (6) is connected to the neutralization box (5) via a connecting pipe (8). The filter box (6) is provided with an exhaust pipe (7). Inside the filter box (6), along the direction from the connecting pipe (8) to the exhaust pipe (7), there are filter plates (13), sponge blocks (14) and activated carbon plates (2) arranged in sequence.

2. The graphitization furnace for continuous production of low-nitrogen carbon raiser according to claim 1, characterized in that, The delivery conduit (4) has an L-shaped structure.

3. The graphitization furnace for continuous production of low-nitrogen carbon raiser according to claim 1, characterized in that, The neutralization box (5) is rotatably connected to a rotating shaft (10), and multiple stirring plates (12) are fixedly connected to the rotating shaft (10). The multiple stirring plates (12) are located inside the neutralization box (5) and arranged along the circumference of the rotating shaft (10). The neutralization box (5) is provided with a driving assembly (9) for driving the rotating shaft (10) to rotate.

4. The graphitization furnace for continuous production of low-nitrogen carbon raiser according to claim 3, characterized in that, The driving component (9) includes: The second rotating shaft (96) is rotatably disposed inside the delivery duct (4). Multiple air guide plates (97) are fixedly connected to the second rotating shaft (96). The multiple air guide plates (97) are arranged along the circumference of the second rotating shaft (96). The driving end of the second rotating shaft (96) extends to the outside of the delivery duct (4). The first gear (91) is sleeved on the rotating shaft (10); The third rotating shaft (98) is rotatably mounted on the neutralization box (5), and the third rotating shaft (98) is fitted with a second gear (92) that meshes with the first gear (91). The first rotating shaft (94) is rotatably mounted on the neutralization box (5). The first rotating shaft (94) is connected to the third rotating shaft (98) via a first belt drive mechanism (93). The first rotating shaft (94) and the second rotating shaft (96) are connected via a second belt drive mechanism (95).

5. A graphitization furnace for continuous production of low-nitrogen carbon raiser according to claim 4, characterized in that, The diameter of the first gear (91) is greater than the diameter of the second gear (92).

6. The graphitization furnace for continuous production of low-nitrogen carbon raiser according to claim 1, characterized in that, The neutralizing solution (11) is an alkaline solution.

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