High-volume resistance carbon black production equipment

Abstract

The invention relates to the technical field of carbon black production, in particular to high-volume resistance carbon black production equipment. The furnace comprises a furnace body, the furnace body is divided into three areas from top to bottom, and the furnace body comprises a preheating area, a reaction area and a homogenizing area from top to bottom; a coil pipe is arranged in the preheating area, the end part of the coil pipe is fixedly connected with a furnace wall lining, the furnace wall lining is positioned in the reaction area, the bottom of the furnace wall lining is fixedly connected with a furnace chamber, and the furnace chamber is positioned in the homogenizing area; a plurality of rotational flow assemblies are arranged in the furnace wall lining, a uniform distribution plate is arranged in the furnace cavity, a gap is reserved between the furnace cavity and the homogenizing area, and a water cooling device is arranged in the gap between the furnace cavity and the homogenizing area. Through a three-area modular structure, accurate regulation and control of the preheating temperature of raw materials are realized, a uniform and stable material basis is provided for a reaction area, and the problem of insufficient preheating of a traditional single cavity structure is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon black production, in particular to a high volume resistance carbon black production device. Background Art

[0002] Carbon black production is a process in which carbon-containing raw materials (such as heavy oil, natural gas, etc.) are subjected to thermal cracking, incomplete combustion and other reactions under high temperature, oxygen-deficient or oxygen-deficient conditions through a specific industrial process to produce black powdered carbon black. Its production methods include oil furnace method, gas furnace method, tank method, etc. The produced carbon black is widely used in many industrial fields such as rubber, plastics, coatings, inks, etc., and can play different roles such as reinforcement, coloring, conductivity, and anti-static.

[0003] High volume resistivity carbon black is a carbon black product with special electrical properties. It has significantly higher volume resistivity than ordinary carbon black. In industrial production, traditional carbon black reactors mostly use a single cavity structure to achieve raw material cracking and carbon black production. For ordinary carbon black, its requirements for particle size distribution and structural porosity are relatively loose, and the process fluctuations of traditional reactors can still meet basic production needs. However, due to the strict standards for nano-scale particle size uniformity, low graphitization structural porosity and resistance stability of high volume resistivity carbon black, the reactor must have the ability to accurately control the temperature of the zone, mix the raw materials at the molecular level, and dynamically homogenize the products.

[0004] However, the single cavity structure of existing reactors usually lacks modular design, making it difficult to implement precise temperature control for raw material preheating, high-temperature reaction and product homogenization processes. This can easily lead to significant differences in the radial and axial temperature fields within the furnace, and easily cause regional unevenness in the carbon black particle size and microstructure during the generation process, making the production of high volume resistivity carbon black more difficult.

[0005] To this end, we propose a high volume resistivity carbon black production equipment. Summary of the Invention

[0006] The present invention provides a high volume resistivity carbon black production equipment, which adopts a modular design by dividing the furnace body into three zones: a preheating zone, a reaction zone, and a homogenizing zone. The spiral coils and heating plates in the preheating zone are used to achieve uniform preheating of the raw materials. The telescopic thermocouples and spirally distributed swirl nozzles in the conical furnace wall lining of the reaction zone achieve dynamic monitoring of the temperature field and molecular-level mixing of the raw materials. The spiral water cooling device and honeycomb-shaped uniform distribution plates outside the furnace cavity of the homogenizing zone form a temperature buffer zone and stabilize the airflow, so that the raw material preheating temperature can be accurately controlled, the temperature field uniformity in the reaction zone is improved, the raw material mixing efficiency is enhanced, and the carbon black product achieves structural homogenization in the homogenizing zone, thereby solving the problems raised in the above-mentioned background technology, namely: The single cavity structure of the traditional reactor lacks modular design, resulting in uneven temperature field and insufficient mixing of raw materials, making it difficult to meet the stringent requirements of high volume resistivity carbon black on particle size uniformity, structural porosity and resistance stability.

[0007] To achieve the above object, the present invention provides the following technical solutions: A high volume resistivity carbon black production device includes a furnace body, which is divided into three areas from top to bottom, including a preheating zone, a reaction zone, and a homogenizing zone. A coil is provided inside the preheating zone, and the end of the coil is fixedly connected to a furnace wall lining, which is located inside the reaction zone. The bottom of the furnace wall lining is fixedly connected to a furnace cavity, which is located inside the homogenizing zone. A plurality of swirl components are provided inside the furnace wall lining, a uniform distribution plate is provided inside the furnace cavity, a gap is left between the furnace cavity and the homogenization zone, a water cooling device is provided in the gap between the furnace cavity and the homogenization zone, and the furnace cavity and the water cooling device are used to form a temperature buffer zone to control the structural homogenization of the carbon black product.

[0008] In the above solution, the coil is spirally downward, and a heating plate is provided between the spiral gaps of the coil and the inner wall of the preheating zone.

[0009] Preferably, the upper and lower ends of the coil are an inlet end and an outlet end respectively, the inlet end of the coil is connected to an inlet thermocouple via a flange, and the outlet end of the coil is connected to an outlet thermocouple via a flange.

[0010] On this basis, the furnace wall lining is tapered as a whole, the furnace wall lining expands outward from the coil outlet end, a plurality of gaps of different heights are provided inside the furnace wall lining, the gaps in the furnace wall lining are filled with ceramic fiber ropes, and three telescopic components and multiple swirl components are provided inside the furnace wall lining.

[0011] Preferably, the three telescopic components are distributed in a triangle, and the telescopic components include a pipe sleeve, which is slidably connected to the inside of the furnace wall lining, and a central thermocouple is provided inside the pipe sleeve; a cylinder is provided between the end of the pipe sleeve and the inner wall of the reaction zone.

[0012] Preferably, the swirl assembly includes a plurality of nozzles, the plurality of nozzles are distributed in a spiral shape, the nozzle heads are arc-shaped, the plurality of nozzles are fixedly connected by a conduit, and a burner is provided at the end of the conduit passing through the reaction zone.

[0013] In this technical solution, the inlet thermocouple and the outlet thermocouple are used to detect the preheating temperature and appropriately adjust the temperature of the heating plate and the burner.

[0014] Preferably, the diameter of the furnace cavity is consistent with that of the bottom of the furnace wall lining, and a temperature sensor is provided at the connection between the furnace cavity and the furnace wall lining via a flange.

[0015] Preferably, the uniform distribution plate is located in the middle section of the homogenization zone, and a plurality of honeycomb-shaped holes are provided inside the uniform distribution plate.

[0016] Preferably, the water cooling device is spirally coiled around the outer wall of the furnace cavity, and a water outlet and a water inlet are respectively provided at both ends of the water cooling device. A heat exchanger is provided at the water outlet of the water cooling device, and a water pump is provided at the water inlet of the water cooling device, and the heat exchanger is connected to the water pump.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In a high volume resistivity carbon black production equipment, the furnace body is divided into a three-zone modular structure: preheating zone, reaction zone and homogenization zone. The preheating zone spiral coil, heating plate and inlet and outlet thermocouples are designed in conjunction with each other to achieve precise control of the raw material preheating temperature, provide a uniform and stable material base for the reaction zone, and solve the problem of insufficient preheating in the traditional single cavity structure.

[0018] 2. In a high volume resistivity carbon black production equipment, the synergistic effect of the conical furnace wall lining in the reaction zone, the spirally distributed swirl nozzles and the triangularly distributed telescopic thermocouple assembly are utilized. The flared structure of the conical lining is utilized to enhance the airflow swirl effect. Combined with the dynamic monitoring of the temperature field by the telescopic thermocouple, the raw material mixing efficiency and temperature uniformity are significantly improved, thus avoiding the particle size differences caused by uneven reactions in traditional equipment.

[0019] 3. In a high volume resistivity carbon black production equipment, a spiral water cooling device outside the furnace cavity of the homogenization zone is combined with a honeycomb uniform distribution plate to form a temperature buffer zone and stabilize the air flow. The carbon black generated by the reaction is dynamically homogenized, suppressing sintering and ensuring structural porosity, thus solving the problem of uneven microstructure of the product in traditional processes.

[0020] 4. In a high volume resistivity carbon black production equipment, the segmented structure of the furnace wall lining, the expansion joint filled with ceramic fiber ropes, and the quick-release connection design adapt to high-temperature thermal expansion and contraction and simplify the maintenance process. At the same time, the closed-loop circulation system of the water cooling device optimizes thermal management, improving equipment durability and energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the reactor of the present invention; Figure 3 This is a schematic diagram of the partition structure of the reactor of the present invention; Figure 4 It is a schematic diagram of the burner structure of the present invention; Figure 5 It is a schematic structural diagram of the water cooling device of the present invention; Figure 6 This is a schematic diagram of the spiral preheating structure of the present invention; Figure 7 This is a schematic diagram of the telescopic assembly structure of the present invention; Figure 8 This is a schematic diagram of the spiral nozzle structure of the present invention; Figure 9 It is a schematic diagram of the honeycomb homogenization structure of the present invention; Figure 10 It is a block diagram of the production principle of the reactor of the present invention.

[0022] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Furnace body; 11. Preheating zone; 110. Coil; 111. Inlet thermocouple; 112. Outlet thermocouple; 113. Heating plate; 12. Reaction zone; 120. Furnace wall lining; 1200. Ceramic fiber rope; 121. Telescopic assembly; 1210. Pipe sleeve; 1211. Central thermocouple; 1212. Cylinder; 122. Swirl assembly; 1220. Nozzle; 1221. Conduit; 123. Burner; 13. Homogenizing zone; 130. Furnace cavity; 131. Uniform distribution plate; 132. Temperature sensor; 133. Water cooling device. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example

[0024] Currently, the single cavity structure of the traditional reactor lacks modular design, resulting in uneven temperature field and insufficient mixing of raw materials, making it difficult to meet the stringent requirements of high volume resistivity carbon black on particle size uniformity, structural porosity and resistance stability. Figures 1-10 The high volume resistivity carbon black production equipment shown includes a furnace body 1, which is divided into three areas from top to bottom. The furnace body 1 includes a preheating area 11, a reaction area 12 and a homogenizing area 13 from top to bottom; A coil 110 is provided inside the preheating zone 11, and the end of the coil 110 is fixedly connected to the furnace wall lining 120, the furnace wall lining 120 is located inside the reaction zone 12, and the bottom of the furnace wall lining 120 is fixedly connected to the furnace cavity 130, and the furnace cavity 130 is located inside the homogenization zone 13; a plurality of swirl components 122 are provided inside the furnace wall lining 120, and a uniform distribution plate 131 is provided inside the furnace cavity 130, and a gap is left between the furnace cavity 130 and the homogenization zone 13, and a water cooling device 133 is provided in the gap between the furnace cavity 130 and the homogenization zone 13, and the furnace cavity 130 and the water cooling device 133 are used to form a temperature buffer zone to control the structural homogenization of the carbon black product.

[0025] When implementing, refer to Figure 3 As shown, the furnace wall lining 120 is tapered as a whole, and the furnace wall lining 120 expands outward from the outlet end of the coil 110. A plurality of gaps of different heights are provided inside the furnace wall lining 120. The gaps in the furnace wall lining 120 are filled with ceramic fiber ropes 1200. Three telescopic components 121 and a plurality of swirl components 122 are provided inside the furnace wall lining 120.

[0026] The conical furnace wall lining 120 has an outward expansion structure extending from the outlet end of the coil 110. The principles of fluid mechanics are used to create a gradually expanding swirl field when the raw material airflow enters the reaction zone 12. Combined with the spirally distributed swirl nozzle 1220 (arc-shaped nozzle + conduit 1221 connected to the burner 123), the raw material and air are forcibly mixed to form turbulent flow, significantly improving molecular-level mixing efficiency and solving the problem of insufficient mixing in traditional single-cavity systems. Since the gaps at different heights inside the lining are filled with ceramic fiber ropes 1200, elastic buffering adapts to thermal expansion and contraction under high temperature (dynamic compensation of linear expansion), avoiding cracking of the lining due to thermal stress, while maintaining the airtightness of the furnace chamber 130 and preventing temperature field fluctuations caused by heat loss.

[0027] See Figure 7 As shown, the three telescopic components 121 are distributed in a triangular shape. The telescopic components 121 include a pipe sleeve 1210, which is slidably connected to the inside of the furnace wall lining 120. A central thermocouple 1211 is provided inside the pipe sleeve 1210; a cylinder 1212 is provided between the end of the pipe sleeve 1210 and the inner wall of the reaction zone 12.

[0028] During the normal temperature measurement phase, the cylinder 1212 is in the initial extension state, the sleeve 1210 is positioned along the inner liner sliding track to the temperature measurement point, and the central thermocouple 1211 is exposed to the high temperature area in the furnace. The temperature data is collected in real time and transmitted to the control system to provide a basis for power adjustment of the burner 123 of the swirl assembly 122 and maintain the temperature uniformity of the reaction zone 12. When the thermocouple detects that the temperature exceeds the threshold or the airflow impact causes the vibration amplitude of the pipe sleeve 1210 to exceed the limit, the control system triggers the solenoid valve of the cylinder 1212, and the compressed air drives the piston rod of the cylinder 1212 to retract, pulling the pipe sleeve 1210 and the thermocouple back to the safe position of the lining; and in the retracted state, the thermocouple continuously monitors the furnace wall temperature. After the working condition returns to normal, the cylinder 1212 automatically resets and extends, and the thermocouple re-enters the temperature measurement point; During the normal temperature measurement stage, the temperature data in the furnace is collected in real time and fed back to the control system to adjust the power of the burner 123 to maintain the temperature uniformity of the reaction zone 12; in the event of an abnormality, the thermocouple probe is quickly retracted to a safe position to avoid damage from high temperature or airflow impact; after the working condition is restored, it automatically resets and continues to measure the temperature. The telescopic sleeve design allows the thermocouple probe to be directly exposed to the high-temperature airflow, shortening the heat conduction path and accelerating the temperature response speed. At the same time, it avoids long-term exposure of the fixed sleeve, which causes carbon accumulation on the surface and affects the heat conduction efficiency, thereby realizing accurate monitoring and dynamic protection of the temperature field in the reaction zone 12, ensuring the temperature control accuracy and equipment reliability required for the production of high volume resistivity carbon black.

[0029] See Figure 4 and Figure 8 As shown, the swirl assembly 122 includes multiple nozzles 1220, which are distributed in a spiral shape. The nozzles 1220 are arc-shaped at the nozzle heads. The multiple nozzles 1220 are fixedly connected by a conduit 1221, and a burner 123 is provided at the end of the conduit 1221 passing through the reaction zone 12.

[0030] Multiple nozzles 1220 distributed in a spiral shape are connected to the burner 123 via a conduit 1221. The curved surface design of the arc-shaped nozzle allows the high-temperature airflow output by the burner 123 to form a tangential velocity component after being ejected. Combined with the flared structure of the conical furnace wall lining 120, a gradually expanding vortex field is constructed inside the reaction zone 12. This vortex field uses the centrifugal effect to ensure that the raw oil mist and air are fully in contact in a turbulent state, avoiding the formation of mixing dead corners caused by the airflow directly hitting the furnace wall, and achieving uniform mixing at the molecular level.

[0031] Multiple nozzles 1220 are connected in parallel to the burner 123 through the conduit 1221, and the pressure balance of each nozzle 1220 is ensured by optimizing the pipeline structure, so that the swirl field remains stable in the circumferential direction, avoiding local reaction differences due to uneven air supply; at this time, the burner 123 dynamically adjusts the fuel supply and air ratio according to the temperature data feedback from the telescopic thermocouple, controls the flame shape and peak temperature, and releases the combustion heat in the swirl field evenly; through the flow field optimization of the spiral layout, the injection angle control of the arc nozzle and the dynamic feedback of the burner 123, the problems of insufficient raw material mixing and uneven reaction temperature in the traditional single cavity structure are solved, providing a uniform and controllable reaction environment for the production of high volume resistivity carbon black.

[0032] In this embodiment, refer to Figure 6 As shown, the coil 110 spirals downward, and a heating plate 113 is provided between the spiral gap of the coil 110 and the inner wall of the preheating zone 11. The upper and lower ends of the coil 110 are respectively the inlet and outlet ends. The inlet end of the coil 110 is connected to the inlet thermocouple 111 via a flange, and the outlet end of the coil 110 is connected to the outlet thermocouple 112 via a flange.

[0033] The inlet thermocouple 111 and the outlet thermocouple 112 are used to detect the preheating temperature and appropriately adjust the temperature of the heating plate 113 and the burner 123.

[0034] First, the raw material enters the inlet of the coil 110 and flows downward along a spiral trajectory. The spiral structure of the coil 110 prolongs the residence time of the raw material in the preheating zone 11. The heating plate 113 evenly supplies heat from the outside of the coil 110, ensuring sufficient heat exchange between the raw material and the inner wall of the coil 110 during its movement, thus avoiding the problems of local overheating or insufficient heating in traditional straight tube designs. At this time, the inlet thermocouple 111 detects the initial temperature of the raw material in real time, and the outlet thermocouple 112 synchronously feeds back the preheating completion temperature, forming a closed-loop monitoring system. When the outlet temperature deviates from the set value, the control system automatically adjusts the power of the heating plate 113 to compensate for the heat deviation, so that the raw material preheating temperature is maintained in the precise range required for the reaction; The data from the outlet thermocouple 112 is simultaneously fed back to the burner 123 in the reaction zone 12, and the power of the burner 123 is dynamically adjusted according to the preheating temperature. If the preheating temperature is too low, the burner 123 increases the heat supply to increase the temperature of the reaction zone 12, ensuring that the raw materials can reach the cracking activation state in time after entering the reaction zone 12. Otherwise, the power is reduced to avoid overheating. Through this linkage mechanism, coordinated temperature control of the entire process from preheating to reaction is achieved, solving the problem of process fluctuations caused by the disconnection between preheating and reaction temperature in a traditional single cavity, and providing stable raw material preheating conditions for the production of high volume resistivity carbon black.

[0035] Also, see Figure 2 and Figure 9 As shown, the furnace cavity 130 and the furnace wall lining 120 have the same bottom diameter, and a temperature sensor 132 is provided at the connection between the furnace cavity 130 and the furnace wall lining 120 through a flange. The uniform distribution plate 131 is located in the middle section of the homogenization zone 13, and has multiple honeycomb-shaped holes inside.

[0036] The furnace chamber 130 is connected to the inner lining 120 of the reaction zone 12 in equal diameters to maintain airflow continuity. The temperature sensor 132 provides real-time feedback on the airflow temperature. When the temperature exceeds the equalization threshold, the water cooling device 133 is triggered to adjust the cooling intensity to control the temperature gradient within a reasonable range. The high-speed airflow is decelerated and evenly distributed through the honeycomb structure of the uniform distribution plate 131, so that the residence time of the carbon black particles in the homogenization zone 13 is consistent, avoiding the difference in particle size caused by uneven flow velocity, and cooperating with the temperature buffer zone to achieve uniform control of the structural looseness; its regularly arranged honeycomb holes can divide the high-speed turbulent airflow into multiple parallel streams, and use the geometric symmetry of the hexagon to eliminate the eddy currents and local pressure differences in the airflow, so that the carbon black particles form a uniform and stable flow field when passing through, avoiding the difference in particle size distribution caused by uneven flow velocity; and the pore uniformity of the honeycomb structure ensures that the airflow resistance in each area is consistent, so that the residence time of the carbon black particles in the homogenization zone 13 tends to be consistent, and cooperates with the temperature buffer zone formed by the water cooling device 133 outside the furnace chamber 130 to achieve uniform temperature field conduction of the carbon black particles, and suppress sintering agglomeration caused by local overheating.

[0037] See Figure 2 and Figure 5 As shown, the water cooling device 133 is spirally coiled on the outer wall of the furnace chamber 130, and a water outlet and a water inlet are respectively provided at both ends of the water cooling device 133. A heat exchanger is provided at the water outlet of the water cooling device 133, and a water pump is provided at the water inlet of the water cooling device 133. The heat exchanger and the water pump are connected.

[0038] According to the water cooling device 133, which is spirally coiled along the outer wall of the furnace cavity 130, the cooling water flows in a turbulent state, extending the contact path with the furnace cavity 130 and enhancing the heat exchange efficiency; when the temperature sensor 132 detects that the air flow temperature in the furnace cavity 130 exceeds the equalization process threshold, the control system starts the water pump, driving the cooling water to flow from the water inlet into the spiral coil 110, absorb the heat conducted by the furnace cavity 130 and then flow out from the water outlet, forming a circulating cooling flow field.

[0039] In addition, the high-temperature cooling water discharged through the water outlet enters the heat exchanger, exchanges heat with the outside air or cooling medium through the heat sink, reduces the water temperature to the set value, and is then pressurized and transported to the water inlet by the water pump, forming a closed-loop system, avoiding the water resource waste and temperature fluctuations of traditional open cooling.

[0040] The temperature data of the furnace chamber 130 is fed back in real time through the temperature sensor 132, and the control system automatically adjusts the water pump speed and the heat dissipation power of the heat exchanger according to the temperature difference; when the temperature is too high, the cooling water flow is increased and the heat dissipation of the heat exchanger is enhanced to quickly reduce the temperature of the outer wall of the furnace chamber 130; when the temperature is close to the homogenization target value, the flow is reduced to a maintenance state, so that the carbon black airflow in the furnace chamber 130 completes structural homogenization in a controllable temperature gradient, avoiding sudden changes in particle size or high-temperature sintering caused by rapid cooling, and cooperates with the airflow stabilization effect of the honeycomb uniform distribution plate 131 to ultimately achieve uniformity control of the microstructure of high volume resistivity carbon black.

[0041] Working principle: First, in the preheating zone 11, when the raw material flows downward along the spiral coil 110, it is evenly heated by the heating plate 113 between the coil 110 and the inner wall of the preheating zone 11. The spiral structure extends the residence time of the raw material to fully exchange heat; the inlet and outlet thermocouples 112 monitor the temperature in real time and form a closed-loop control, which not only automatically adjusts the power of the heating plate 113, but also feeds back the outlet temperature data to the burner 123 in the reaction zone 12, dynamically adjusts the combustion power, and realizes cross-regional coordination of preheating and reaction temperature.

[0042] When the preheated raw materials enter the reaction zone 12, the flared structure of the conical furnace wall lining 120 and the spirally distributed arc nozzle 1220 cooperate to construct a gradually expanding swirl field. The burner 123 transports fuel and air to the nozzle 1220 through the conduit 1221, and a tangential swirl is formed after being ejected through the arc nozzle. The molecular-level mixing of the raw materials and air is achieved with the centrifugal effect of the conical lining; the triangularly distributed telescopic thermocouple assembly is combined with the high-temperature zone to collect temperature data under normal conditions and feed it back to the burner 123 to maintain temperature uniformity; when the temperature exceeds the limit or is impacted by airflow, the cylinder 1212 drives the thermocouple to retract quickly to a safe position, and automatically resets after the working condition is restored, thereby ensuring the stability of the temperature field.

[0043] When the carbon black gas generated by the reaction passes through the equal-diameter furnace chamber 130 and enters the homogenization zone 13, the spirally coiled water cooling device 133 on the outer wall of the furnace chamber 130 is linked with the temperature sensor 132 to form a controllable temperature buffer zone; when the temperature sensor 132 detects that the temperature of the air flow in the furnace chamber 130 exceeds the limit, the water pump is started to drive the cooling water to circulate in the spiral coil 110, and the cooling water returns after being dissipated by the heat exchanger, and the temperature gradient is controlled by adjusting the flow rate and heat dissipation power; the honeycomb uniform distribution plate 131 in the middle section of the homogenization zone 13 divides the high-speed airflow into parallel thin streams, eliminates vortices and uniformizes the flow rate, so that the carbon black particles complete structural shaping in a consistent residence time and temperature field.

[0044] The equipment adopts a three-zone modular design and the coordinated action of various components. In the preheating zone 11, a spiral coil 110 and a thermocouple closed loop are used to achieve precise control of the raw material temperature and link the burner 123 in the reaction zone 12 to ensure the coordination of preheating and reaction temperature. The reaction zone 12 uses a conical lining and a swirl nozzle 1220 to strengthen the molecular-level mixing of the raw materials, and cooperates with the dynamic monitoring and protection of the telescopic thermocouple to achieve a uniform and controllable temperature field. The homogenization zone 13 uses a water cooling device 133 and a honeycomb uniform distribution plate 131 to form a temperature buffer zone and stabilize the airflow, so that the carbon black particle structure is uniformly shaped, breaking through the bottleneck of uneven temperature and insufficient mixing in the traditional single cavity as a whole, effectively improving the particle size uniformity, structural looseness and resistance stability of high volume resistivity carbon black, and at the same time enhancing the equipment operation reliability and maintenance convenience.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high volume resistivity carbon black production device, comprising a furnace body (1), characterized in that: The furnace body (1) is divided into three areas from top to bottom, and the furnace body (1) includes a preheating area (11), a reaction area (12), and a homogenizing area (13) from top to bottom; a coil (110) is provided inside the preheating area (11), an end of the coil (110) is fixedly connected to a furnace wall lining (120), the furnace wall lining (120) is located inside the reaction area (12), a bottom of the furnace wall lining (120) is fixedly connected to a furnace cavity (130), and the furnace cavity (130) is located inside the homogenizing area (13); A plurality of swirl components (122) are provided inside the furnace wall lining (120), a uniform distribution plate (131) is provided inside the furnace cavity (130), a gap is left between the furnace cavity (130) and the homogenizing zone (13), a water cooling device (133) is provided in the gap between the furnace cavity (130) and the homogenizing zone (13), and the furnace cavity (130) and the water cooling device (133) are used to form a temperature buffer zone to control the structural homogenization of the carbon black product.

2. The high volume resistivity carbon black production equipment according to claim 1, characterized in that: The coil (110) spirals downward, and a heating plate (113) is provided between the spiral gaps of the coil (110) and the inner wall of the preheating zone (11).

3. The high volume resistivity carbon black production equipment according to claim 2, characterized in that: The upper and lower ends of the coil (110) are an inlet end and an outlet end, respectively. The inlet end of the coil (110) is connected to an inlet thermocouple (111) via a flange, and the outlet end of the coil (110) is connected to an outlet thermocouple (112) via a flange.

4. The high volume resistivity carbon black production equipment according to claim 3, characterized in that: The furnace wall lining (120) is tapered as a whole, and the furnace wall lining (120) expands outward from the outlet end of the coil (110). A plurality of gaps of different heights are provided inside the furnace wall lining (120), and the gaps in the furnace wall lining (120) are filled with ceramic fiber ropes (1200). Three telescopic components (121) and a plurality of swirl components (122) are provided inside the furnace wall lining (120).

5. The high volume resistivity carbon black production equipment according to claim 4, characterized in that: The three telescopic components (121) are distributed in a triangular shape. The telescopic components (121) include a pipe sleeve (1210). The pipe sleeve (1210) is slidably connected to the inside of the furnace wall lining (120). A central thermocouple (1211) is provided inside the pipe sleeve (1210); and a cylinder (1212) is provided between the end of the pipe sleeve (1210) and the inner wall of the reaction zone (12).

6. The high volume resistivity carbon black production equipment according to claim 4, characterized in that: The swirl assembly (122) comprises a plurality of nozzles (1220), the plurality of nozzles (1220) being distributed in a spiral shape, the nozzles (1220) being arc-shaped at their nozzles, the plurality of nozzles (1220) being fixedly connected via a conduit (1221), and a burner (123) being provided at the end of the conduit (1221) passing through the reaction zone (12).

7. The high volume resistivity carbon black production equipment according to claim 6, characterized in that: The inlet thermocouple (111) and the outlet thermocouple (112) are used to detect the preheating temperature and appropriately adjust the temperature of the heating plate (113) and the burner (123).

8. The high volume resistivity carbon black production equipment according to claim 1, characterized in that: The furnace cavity (130) and the furnace wall lining (120) have the same bottom diameter, and a temperature sensor (132) is provided at the connection between the furnace cavity (130) and the furnace wall lining (120) via a flange.

9. The high volume resistivity carbon black production equipment according to claim 1, characterized in that: The uniform distribution plate (131) is located in the middle section of the homogenization zone (13), and a plurality of honeycomb-shaped holes are formed inside the uniform distribution plate (131).

10. The high volume resistivity carbon black production equipment according to claim 1, characterized in that: The water cooling device (133) is spirally wound around the outer wall of the furnace cavity (130), and a water outlet and a water inlet are respectively provided at both ends of the water cooling device (133). A heat exchanger is provided at the water outlet of the water cooling device (133), and a water pump is provided at the water inlet of the water cooling device (133). The heat exchanger and the water pump are in communication.

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