Carbon black reaction furnace and carbon black production method

Abstract

The invention discloses a carbon black reaction furnace and a carbon black production method, and relates to the technical field of carbon black production, the carbon black reaction furnace comprises a reaction furnace main body and a cooling furnace, and the reaction furnace main body and the cooling furnace are mutually connected to form a whole. According to the carbon black reaction furnace and the carbon black production method and device, the heat collection cavity is arranged between the reaction furnace main body and the reaction tube, and the design of the heat insulation sleeve is matched, so that heat recovery and utilization are effectively realized, and the heat collection cavity can absorb high-temperature heat generated in the reaction tube; raw materials or air entering the reaction pipe are preheated through the heating structure, the utilization rate of heat energy of the system is increased, consumption of external energy is reduced, heat is evenly distributed in the whole heat collection cavity due to the existence of the S-shaped air duct, and therefore heat energy is fully utilized. When crude oil is heated, the residence time can be prolonged, the temperature rise is accelerated, and the preheating effect of raw materials is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of carbon black production, in particular to a carbon black reactor and a carbon black production method. Background Art

[0002] A carbon black reactor is a device used to produce carbon black, which is an important carbon-based material widely used in industries such as rubber, plastics, coatings and inks. Existing carbon black reactors are prone to incomplete fuel reaction during use, resulting in a waste of raw materials.

[0003] In order to overcome the above defects, a Chinese patent of the prior art (publication number: CN222160047U) discloses a carbon black reactor combustion process device, which includes an air distributor, a gas distributor, a combustion section, a throat section and a reaction section. The air distributor and the gas distributor are sequentially arranged at the front end of the combustion section and are distributed in a stepped manner. A plurality of gas diversion ports are arranged on the inner sides of the air distributor and the gas distributor. An axial air deflector is arranged in the air distributor, and an axial gas deflector is arranged in the gas distributor. The air deflector It is coaxially arranged with the gas deflector, and the diameter of the gas deflector is smaller than that of the air deflector. The throat section is connected with the rear end of the combustion section, the reaction section is connected with the throat section, and a trumpet-shaped transition section is arranged at the front end of the reaction section. Two rows of radially injected raw oil inlets are arranged on the throat section, which can make the gas and air in the furnace mix more evenly and burn more fully, thereby ensuring the yield and quality of carbon black. There is also a Chinese patent in the prior art (publication number: CN222138997U) that discloses a carbon black reactor with radial injection of fuel oil. It includes a combustion chamber, a throat section and a reaction section, wherein the throat section includes a first trumpet section and a second trumpet section, an axial fuel oil pipe for axial injection and a radial fuel oil pipe for radial injection are provided at the inlet of the combustion chamber, the axial fuel oil pipe is connected to the fuel oil atomization air pipe, and an axial cooling air pipe is provided around the outer side of the axial fuel oil pipe, and a radial cooling air pipe is provided around the outer side of the radial fuel oil pipe, and a raw material oil pipe for radial injection is provided at the connection between the first trumpet section and the second trumpet section, the raw material oil pipe is evenly arranged around, and the second trumpet section is connected to the reaction section in a stepped expansion manner. The carbon black reactor can improve the combustion efficiency of the combustion chamber, increase the temperature of the combustion chamber, reduce heat loss, save costs, and at the same time can enhance the flow rate of the high-temperature airflow, improve the reaction efficiency and the quality of carbon black.

[0004] Although the existing technology can overcome the above-mentioned deficiencies, there are still other problems in its operation: during the combustion of crude oil inside the furnace body, the crude oil and air added to the furnace body need to be heated to increase the reaction rate inside the furnace body, and the existing carbon black reactor generally performs heat recovery processing after the reaction is completed, resulting in a large heat loss. Summary of the invention

[0005] The object of the present invention is to provide a carbon black reactor and a carbon black production method to solve the problem that in the process of crude oil burning inside the furnace body in the above-mentioned background technology, the crude oil and air added into the furnace body need to be heated to increase the reaction rate inside the furnace body, while the existing carbon black reactor generally performs heat recovery treatment after the reaction is completed, resulting in a large heat loss.

[0006] To achieve the above object, the present invention provides the following technical solution: a carbon black reaction furnace, comprising a reaction furnace body and a cooling furnace, wherein the reaction furnace body and the cooling furnace are connected to each other to form a whole, and the bottom of the reaction furnace body and the cooling furnace are fixedly connected with a support base, and the support base is placed on the ground; The reactor body is configured as a double-layer structure, and a heat insulation sleeve is fixedly connected inside the double-layer structure of the reactor body, reaction tubes are arranged inside the reactor body and the cooling furnace, and a heat recovery structure is arranged between the reaction tubes and the reactor body, the heat recovery structure comprises a mounting ring fixedly connected to the inner side of the reactor body and the outer side of the reaction tube, a heat collection cavity is formed between the outer side of the reaction tube and the inner side of the reactor body, and the mounting ring divides the inside of the heat collection cavity into an air duct of an S-shaped structure; A heating structure for heating crude oil is arranged inside the heat collection cavity, and an injection structure for injecting air into the reactor body is arranged outside the reactor body.

[0007] Preferably, the injection structure includes three air-injection holes arranged on the outside of the reaction furnace body, and the three air-injection holes are respectively distributed at the top and bottom of one end of the reaction furnace body close to the cooling furnace.

[0008] Preferably, the inside of each of the gas filling holes is fixedly connected with a gas filling pipe, and one end of each gas filling pipe away from the gas filling hole is connected to each other, and one end of the gas filling pipe away from the gas filling hole is fixedly connected to a connecting pipe.

[0009] Preferably, the cooling furnace is configured as a multi-layer structure, and equidistantly distributed insulation rings are fixedly connected between the cooling furnace and the reaction tube, and a discharge port is provided at one end of the cooling furnace away from the reaction furnace body, a fixed port is provided at one end of the reaction furnace body away from the cooling furnace, and an injection port is provided at one end of the reaction tube away from the cooling furnace, and the fixed port and the injection port are aligned with each other.

[0010] Preferably, the heating structure includes mounting holes located inside the mounting ring, and the mounting holes are equidistantly distributed in a circular shape inside the mounting ring. An oil pipeline is fixedly connected to the inside of the mounting ring, and the oil pipeline is distributed inside the heat collection cavity in an S-shaped structure.

[0011] Preferably, the two ends of the oil pipeline are respectively fixedly connected with an oil inlet pipe and an oil drain pipe, and the oil inlet pipe passes through the end of the reactor body away from the cooling furnace, and the oil inlet pipe extends to the outside of the reactor body, the end of the oil pipeline is fixedly connected with an oil drain pipe, and the end of the oil drain pipe away from the heat collecting chamber is fixedly connected with an oil injector.

[0012] Preferably, an ignition sleeve is fixedly connected to the outside of the injector head, and the side of the ignition sleeve away from the injector head is fixedly connected to the injection port, and the output end of the injector head extends into the interior of the reaction tube. The ignition sleeve is set to a conical structure, and evenly distributed air holes are provided inside the ignition sleeve.

[0013] Preferably, a sealing cover is snap-fitted and connected inside the fixed port, and two symmetrically distributed injection tubes are fixedly connected inside the sealing cover, and the injection tubes penetrate the injection port and extend to the inside of the reaction tube.

[0014] Preferably, an isolation ring is fixedly connected to the outer side of one end of the reaction tube away from the cooling furnace, and the isolation ring is fixedly connected between the reaction furnace body and the reaction tube, and the isolation ring divides the inside of the heat collection cavity to form an air chamber, and the side of the isolation ring away from the cooling furnace is rotatably connected to a cover plate distributed in an annular shape and equidistantly, and the interior of the isolation ring is provided with air inlet holes distributed in an annular shape and equidistantly, and each cover plate and each air inlet hole are aligned with each other, a rotating shaft is provided at the connection between the cover plate and the isolation ring, and a torsion spring is fixedly connected to the outer side of the connection between the cover plate and the rotating shaft.

[0015] Preferably, a carbon black reactor also discloses a carbon black production method, and the specific method steps are as follows: S1: When the raw materials are added to the reaction tube, the air will be transported to the gas filling pipe through the connecting pipe. At this time, the air in the gas filling pipe will be transported to the heat collecting cavity from the gas filling holes in three different directions. At this time, the air will flow through the heat collecting cavity and enter the air bin after passing through the isolation ring. It will gather in the middle of the air bin and enter the reaction tube after passing through the ignition sleeve to complete the addition of air. S2: Connect the oil inlet pipe and the crude oil pipeline. The crude oil will enter the oil pipeline through the oil inlet pipe. The crude oil in the oil pipeline will be transported to the oil injection head through the oil discharge pipe. The oil injection head will spray the crude oil so that the crude oil is evenly distributed in the reaction tube, thus completing the addition of crude oil. S3: Crude oil will be discharged into the reactor body through the oil discharge pipe. At this time, additives and fuel gas are injected into the reactor from the injection pipe. At this time, the mixed raw materials in the reactor reach a high temperature of 1000°C under the heating of fuel gas through the ignition sleeve. At this time, the hydrocarbon molecules in the raw materials are decomposed at high temperature to form carbon black particles and gas, among which large molecular hydrocarbons are converted into small molecular hydrocarbons and carbon atoms, and the carbon atoms are further aggregated to form carbon black. After the reaction, the carbon black particles and gas are initially cooled in the cooling furnace and discharged from the reactor through the discharge port, so as to carry out subsequent processing steps such as cooling and separation; S4: When the raw materials are added to the reaction tube, the air will be transported to the gas filling pipe through the connecting pipe. At this time, the air in the gas filling pipe will be transported to the heat collecting cavity from the gas filling holes in three different directions. At this time, the air will flow through the heat collecting cavity and enter the air bin after passing through the isolation ring. It will gather in the middle of the air bin and enter the reaction tube after passing through the ignition sleeve to complete the addition of air. S5: During the reaction of the raw materials inside the reaction tube, the high temperature inside the reaction tube will be transferred to the outside of the reaction tube. At this time, the reaction tube will transfer the heat to the inside of the heat collecting chamber, so that the inside of the heat collecting chamber has a higher temperature, and the inside of the heat collecting chamber is insulated by the heat insulating sleeve arranged inside the reactor body, so that the temperature inside the heat collecting chamber can be effectively transferred to the internal parts of the heat collecting chamber, and the raw materials are heated by the heat recovered from the heat collecting chamber, thereby increasing the working temperature of the raw materials and further improving the reaction efficiency inside the carbon black furnace.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The carbon black reactor and carbon black production method are characterized in that a heat collection chamber is arranged between the reactor body and the reaction tube, and the heat insulation sleeve is designed to effectively realize heat recovery and utilization. The heat collection chamber can absorb the high-temperature heat generated in the reaction tube, and preheat the raw materials or air entering the reaction tube through the heating structure, which not only improves the utilization rate of the system's thermal energy, but also reduces the consumption of external energy. The existence of the S-shaped air duct makes the heat evenly distributed in the entire heat collection chamber, so that the thermal energy is fully utilized. Under the S-shaped distribution structure of the oil pipeline, the crude oil can prolong its residence time when heated, accelerate the temperature rise, and optimize the preheating effect of the raw materials.

[0017] Furthermore, the device ensures that air enters the heat collection chamber from different directions by setting up three air holes and an air pipe injection design, and forms an S-shaped flow path in the heat collection chamber to extend the retention time. This design not only significantly enhances the contact efficiency between air and heat, but also further increases the temperature of the air, making the air more reactive.

[0018] Furthermore, the solar collecting cavity is separated by an isolation ring to form an air chamber, and the air inlet is flexibly controlled by the rotating opening and closing function of the cover. When air pressure acts on the cover, the air inlet will open automatically; and when there is no pressure, the torsion spring drives the cover to close the air inlet, realizing an automatic sealing function. When the gas inside the air chamber flows in the opposite direction, the cover can quickly seal the air inlet, effectively preventing the gas from flowing back and avoiding leakage of internal overheated gas, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the structure of the heat insulation sleeve of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the reaction furnace of the present invention; Figure 5 This is a schematic diagram of the oil pipeline structure of the present invention; Figure 6 It is a schematic diagram of the heat collection cavity structure of the present invention; Figure 7 It is a schematic diagram of the structure of the reactor of the present invention; Figure 8 It is a schematic diagram of the sleeve structure of the present invention; Fig. 9 This is a schematic diagram of the isolation ring structure of the present invention; Fig.10 For the present invention Fig. 9 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. Reactor body; 2. Cooling furnace; 3. Support seat; 4. Insulation sleeve; 5. Reactor tube; 6. Heat collecting chamber; 7. Mounting ring; 8. Mounting hole; 9. Gas filling hole; 10. Gas filling pipe; 11. Connecting pipe; 12. Insulation ring; 13. Discharge port; 14. Fixing port; 15. Filling port; 16. Oil pipeline; 17. Oil inlet pipe; 18. Oil discharge pipe; 19. Oil injection head; 20. Sealing cover; 21. Filling pipe; 22. Ignition sleeve; 23. Vent; 24. Isolation ring; 25. Air chamber; 26. Cover plate; 27. Air inlet; 28. Torsion spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Fig.10 The present invention provides the following technical solutions: a carbon black reactor, comprising a reactor body 1 and a cooling furnace 2, the reactor body 1 and the cooling furnace 2 are connected to each other to form a whole, and the bottoms of the reactor body 1 and the cooling furnace 2 are fixedly connected with a support seat 3, and the support seat 3 is placed on the ground; the reactor body 1 is set as a double-layer structure, and the double-layer structure of the reactor body 1 is fixedly connected with a heat insulation sleeve 4, the reactor body 1 and the cooling furnace 2 are provided with a reaction tube 5, and a heat recovery structure is provided between the reaction tube 5 and the reactor body 1, the heat recovery structure includes a mounting ring 7 fixedly connected to the inner side of the reactor body 1 and the outer side of the reaction tube 5, and a heat collection cavity 6 is formed between the outer side of the reaction tube 5 and the inner side of the reactor body 1, and the mounting ring 7 divides the inside of the heat collection cavity 6 into an S-shaped air duct; a heating structure for heating crude oil is provided inside the heat collection cavity 6, and an injection structure for injecting air into the reactor body 1 is provided outside the reactor body 1.

[0023] During the operation of the reactor body 1, crude oil will be discharged into the reactor body 1 through the oil discharge pipe 18. At this time, additives and fuel gas are injected into the reaction tube 5 from the injection pipe 21. At this time, the mixed raw materials in the reaction tube 5 are heated by the fuel gas to a high temperature of 1000°C through the ignition sleeve 22. At this time, the hydrocarbon molecules in the raw materials are decomposed at high temperature to form carbon black particles and gas, in which large molecular hydrocarbons become small molecular hydrocarbons and carbon atoms, and the carbon atoms further aggregate to form carbon black. After the reaction, the carbon black particles and gas are initially cooled in the cooling furnace 2 and then discharged from the reaction tube 5 through the discharge port 13, so as to carry out subsequent processing steps such as cooling and separation.

[0024] During the reaction of the raw materials inside the reaction tube 5, the high temperature inside the reaction tube 5 will be transferred to the outside of the reaction tube 5. At this time, the reaction tube 5 will transfer the heat to the inside of the heat collecting chamber 6, so that the inside of the heat collecting chamber 6 has a higher temperature, and the inside of the heat collecting chamber 6 is insulated by the heat insulating sleeve 4 arranged inside the reactor body 1, so that the temperature inside the heat collecting chamber 6 can be effectively transferred to the internal parts of the heat collecting chamber 6, and the raw materials are heated by the heat recovered by the heat collecting chamber 6, thereby increasing the working temperature of the raw materials, and then improving the reaction efficiency inside the carbon black furnace.

[0025] Embodiment 2: On the basis of embodiment 1, an injection structure is further disclosed, and its specific structure is as follows: the injection structure includes three gas-filling holes 9 arranged on the outside of the reactor body 1, and the three gas-filling holes 9 are respectively distributed at the top and bottom of one end of the reactor body 1 close to the cooling furnace 2; gas-filling pipes 10 are fixedly connected inside the gas-filling holes 9, and one end of each gas-filling pipe 10 away from the gas-filling hole 9 is connected to each other, and one end of the gas-filling pipe 10 away from the gas-filling hole 9 is fixedly connected to a connecting pipe 11; the cooling furnace 2 is set as a multi-layer structure, and equidistantly distributed insulation rings 12 are fixedly connected between the cooling furnace 2 and the reaction tube 5, and a discharge port 13 is provided at the end of the cooling furnace 2 away from the reactor body 1, a fixed port 14 is provided at the end of the reactor body 1 away from the cooling furnace 2, and an injection port 15 is provided at the end of the reaction tube 5 away from the cooling furnace 2, and the fixed port 14 and the injection port 15 are aligned with each other.

[0026] During the process of adding raw materials into the reaction tube 5, air will be transported to the gas filling pipe 10 through the connecting pipe 11. At this time, the air inside the gas filling pipe 10 will be transported to the heat collecting chamber 6 from the gas filling holes 9 in three different directions. At this time, the air will flow through the heat collecting chamber 6, and enter the air bin 25 after passing through the isolation ring 24, converge to the middle of the air bin 25, and enter the reaction tube 5 after passing through the ignition sleeve 22, thereby completing the addition of air.

[0027] The oil inlet pipe 17 is connected to the crude oil pipeline. At this time, the crude oil will enter the oil pipeline 16 through the oil inlet pipe 17. The crude oil in the oil pipeline 16 will be transported to the inside of the oil spray head 19 after passing through the oil discharge pipe 18. The oil spray head 19 sprays the crude oil so that the crude oil is evenly distributed in the reaction tube 5, completing the addition of crude oil, so that the crude oil and the internal air, additives and fuel gas can fully react.

[0028] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, a heating structure is further disclosed, and its specific structure is as follows: the heating structure includes a mounting hole 8 located inside the mounting ring 7, and the mounting holes 8 are equidistantly distributed in a circular shape inside the mounting ring 7, an oil delivery pipe 16 is fixedly connected inside the mounting ring 7, and the oil delivery pipe 16 is distributed in an S-shaped structure inside the heat collecting chamber 6; an oil inlet pipe 17 and an oil outlet pipe 18 are fixedly connected at both ends of the oil delivery pipe 16, respectively, and the oil inlet pipe 17 passes through the end of the reactor body 1 away from the cooling furnace 2, and the oil inlet pipe 17 extends to the outside of the reactor body 1, an oil outlet pipe 18 is fixedly connected to the end of the oil delivery pipe 16, and an oil injector 19 is fixedly connected to the end of the oil outlet pipe 18 away from the heat collecting chamber 6; an ignition sleeve 22 is fixedly connected to the outside of the oil injector 19, and the side of the ignition sleeve 22 away from the oil injector 19 is fixedly connected to the injection port 15, and the output end of the oil injector 19 extends to the inside of the reaction tube 5, and the ignition The sleeve 22 is set to a conical structure, and the ignition sleeve 22 is provided with evenly distributed vent holes 23; a sealing cover 20 is snap-connected inside the fixing port 14, and two symmetrically distributed injection pipes 21 are fixedly connected inside the sealing cover 20, and the injection pipes 21 pass through the injection port 15 and extend to the inside of the reaction tube 5; an isolation ring 24 is fixedly connected to the outer side of one end of the reaction tube 5 away from the cooling furnace 2, and the isolation ring 24 is fixedly connected between the reaction furnace body 1 and the reaction tube 5, and the isolation ring 24 divides the inside of the heat collection cavity 6 to form an air chamber 25, and the side of the isolation ring 24 away from the cooling furnace 2 is rotatably connected to a cover plate 26 distributed in an annular manner with equal distances, and the isolation ring 24 is provided with air inlet holes 27 distributed in an annular manner with equal distances, and each cover plate 26 and each air inlet hole 27 are aligned with each other, a rotating shaft is provided at the connection between the cover plate 26 and the isolation ring 24, and a torsion spring 28 is fixedly connected to the outer side of the connection between the cover plate 26 and the rotating shaft.

[0029] When the air is connected to the interior of the heat collecting chamber 6, the mounting ring 7 divides the heat collecting chamber 6 into an S-shaped air duct. At this time, the air will flow in an S-shape inside the heat collecting chamber 6, thereby extending the residence time of the air inside the heat collecting chamber 6. The air is thereby fully heated by the heat inside the heat collecting chamber 6, so that the air has a higher temperature when participating in the raw material reaction inside the reaction tube 5, thereby increasing the reaction rate of the raw materials inside the reaction tube 5.

[0030] The air inside the heat collecting chamber 6 will enter the air bin 25 through the isolation ring 24. At this time, the air will put pressure on the cover plate 26, causing the cover plate 26 to rotate around the isolation ring 24 until the cover plate 26 and the air inlet hole 27 are separated from each other. At this time, the air inlet hole 27 will be in an open state, and the air will enter the air bin 25 after passing through the air inlet hole 27, and then enter the reaction tube 5 after passing through the ignition sleeve 22 to participate in the reaction. A torsion spring 28 is provided at the connection between the cover plate 26 and the isolation ring 24. When the cover plate 26 does not receive the pressure of the air, the torsion spring 28 will drive the cover plate 26 to rotate toward the side close to the isolation ring 24, thereby sealing the air inlet hole 27, and the covering area of ​​the cover plate 26 is larger than the size of the air inlet hole 27. When the gas flows in the opposite direction inside the air bin 25, the cover plate 26 will be connected to the air inlet hole 27 to form a sealing structure, thereby making the isolation ring 24 form a sealing structure as a whole, thereby preventing the air inside the air bin 25 from flowing in the opposite direction, thereby improving the safety of the device.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon black reaction furnace, comprising a reaction furnace body (1) and a cooling furnace (2), wherein the reaction furnace body (1) and the cooling furnace (2) are connected to each other to form a whole, and the bottoms of the reaction furnace body (1) and the cooling furnace (2) are fixedly connected to a support base (3), and the support base (3) is placed on the ground; Features: The reactor body (1) is configured as a double-layer structure, and a heat insulation sleeve (4) is fixedly connected inside the double-layer structure of the reactor body (1), reaction tubes (5) are provided inside the reactor body (1) and the cooling furnace (2), and a heat recovery structure is provided between the reaction tubes (5) and the reactor body (1), the heat recovery structure comprising a mounting ring (7) fixedly connected to the inside of the reactor body (1) and the outside of the reaction tube (5), a heat collection cavity (6) is formed between the outside of the reaction tube (5) and the inside of the reactor body (1), and the mounting ring (7) divides the inside of the heat collection cavity (6) into an air duct of an S-shaped structure; A heating structure for heating crude oil is provided inside the heat collection cavity (6), and an injection structure for injecting air into the interior of the reactor body (1) is provided outside the reactor body (1).

2. A carbon black reaction furnace according to claim 1, characterized in that: The injection structure comprises three air-injection holes (9) arranged on the outside of the reaction furnace body (1), and the three air-injection holes (9) are respectively distributed at the top and bottom of one end of the reaction furnace body (1) close to the cooling furnace (2).

3. A carbon black reaction furnace according to claim 2, characterized in that: The gas filling holes (9) are all fixedly connected to gas filling pipes (10), and one end of each gas filling pipe (10) away from the gas filling hole (9) is connected to each other, and one end of the gas filling pipe (10) away from the gas filling hole (9) is fixedly connected to a connecting pipe (11).

4. A carbon black reaction furnace according to claim 3, characterized in that: The cooling furnace (2) is configured as a multi-layer structure, and equidistantly distributed heat insulating rings (12) are fixedly connected between the cooling furnace (2) and the reaction tube (5), and a discharge port (13) is provided at one end of the cooling furnace (2) away from the reaction furnace body (1), a fixing port (14) is provided at one end of the reaction furnace body (1) away from the cooling furnace (2), and a material injection port (15) is provided at one end of the reaction tube (5) away from the cooling furnace (2), and the fixing port (14) and the material injection port (15) are aligned with each other.

5. A carbon black reaction furnace according to claim 1, characterized in that: The heating structure comprises mounting holes (8) located inside the mounting ring (7), and the mounting holes (8) are distributed in an annular manner and at equal intervals inside the mounting ring (7); an oil delivery pipe (16) is fixedly connected inside the mounting ring (7), and the oil delivery pipe (16) is distributed inside the heat collection cavity (6) in an S-shaped structure.

6. A carbon black reaction furnace according to claim 5, characterized in that: The two ends of the oil delivery pipe (16) are respectively fixedly connected to an oil inlet pipe (17) and an oil drain pipe (18), and the oil inlet pipe (17) passes through an end of the reaction furnace body (1) away from the cooling furnace (2), and the oil inlet pipe (17) extends to the outside of the reaction furnace body (1), the end of the oil delivery pipe (16) is fixedly connected to the oil drain pipe (18), and the end of the oil drain pipe (18) away from the heat collection chamber (6) is fixedly connected to an oil spray head (19).

7. A carbon black reaction furnace according to claim 6, characterized in that: The outer side of the oil injection head (19) is fixedly connected to an ignition sleeve (22), and a side of the ignition sleeve (22) away from the oil injection head (19) is fixedly connected to the injection port (15), and an output end of the oil injection head (19) extends into the interior of the reaction tube (5), the ignition sleeve (22) is configured as a conical structure, and evenly distributed ventilation holes (23) are provided inside the ignition sleeve (22).

8. A carbon black reaction furnace according to claim 3, characterized in that: The fixing port (14) is internally snap-connected with a sealing cover (20), and the sealing cover (20) is internally fixedly connected with two symmetrically distributed injection pipes (21), and the injection pipes (21) penetrate the injection port (15) and extend into the interior of the reaction tube (5).

9. A carbon black reaction furnace according to claim 1, characterized in that: An isolating ring (24) is fixedly connected to the outer side of one end of the reaction tube (5) away from the cooling furnace (2), and the isolating ring (24) is fixedly connected between the reaction furnace body (1) and the reaction tube (5), and the isolating ring (24) divides the interior of the heat collecting cavity (6) to form an air chamber (25), and a cover plate (26) distributed in an annular shape and at equal intervals is rotatably connected to the side of the isolating ring (24) away from the cooling furnace (2), and air inlet holes (27) distributed in an annular shape and at equal intervals are provided inside the isolating ring (24), and each cover plate (26) and each air inlet hole (27) are aligned with each other, and a rotating shaft is provided at the connection between the cover plate (26) and the isolating ring (24), and a torsion spring (28) is fixedly connected to the outer side of the connection between the cover plate (26) and the rotating shaft.

10. According to the carbon black reactor described in claim 1, a method for producing carbon black is also disclosed, and the specific steps of the method are as follows: S1: When the raw materials are added to the reaction tube (5), air will be transported to the gas adding tube (10) through the connecting tube (11). At this time, the air in the gas adding tube (10) will be transported to the heat collecting chamber (6) from the gas adding holes (9) in three different directions. At this time, the air will flow through the heat collecting chamber (6) and enter the air chamber (25) after passing through the isolation ring (24). The air will converge to the middle of the air chamber (25) and enter the reaction tube (5) after passing through the ignition sleeve (22), thereby completing the addition of air. S2: connecting the oil inlet pipe (17) and the crude oil pipeline to each other. At this time, the crude oil will enter the oil pipeline (16) through the oil inlet pipe (17). The crude oil in the oil pipeline (16) will be transported to the inside of the oil spray head (19) through the oil discharge pipe (18). The oil spray head (19) sprays the crude oil so that the crude oil is evenly distributed in the reaction tube (5), thereby completing the addition of crude oil; S3: The crude oil will be discharged into the reactor body (1) through the oil discharge pipe (18), and the additive and the fuel gas will be injected into the reactor tube (5) from the injection pipe (21). At this time, the mixed raw material in the reactor tube (5) reaches a high temperature of 1000° C. under the heating of the fuel gas through the ignition sleeve (22). At this time, the hydrocarbon molecules in the raw material are decomposed at high temperature to form carbon black particles and gas, wherein the large molecular hydrocarbons are converted into small molecular hydrocarbons and carbon atoms, and the carbon atoms are further aggregated to form carbon black. After the reaction, the carbon black particles and the gas are initially cooled in the cooling furnace (2) and then discharged from the reactor tube (5) through the discharge port (13), so as to carry out subsequent processing steps such as cooling and separation; S4: During the reaction of the raw materials inside the reaction tube (5), the high temperature inside the reaction tube (5) will be transferred to the outside of the reaction tube (5). At this time, the reaction tube (5) will transfer the heat to the inside of the heat collecting chamber (6), so that the inside of the heat collecting chamber (6) has a higher temperature. In addition, the inside of the heat collecting chamber (6) is insulated by the heat insulating sleeve (4) arranged inside the reactor body (1), so that the temperature inside the heat collecting chamber (6) can be effectively transferred to the internal parts of the heat collecting chamber (6). The raw materials are heated by the heat recovered from the heat collecting chamber (6), thereby increasing the working temperature of the raw materials and further increasing the reaction efficiency inside the carbon black furnace.

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