Integrated intelligent pulverized coal distributor for lime kiln

Abstract

The utility model belongs to the technical field of pulverized coal distributors for lime kilns, and discloses an integrated intelligent pulverized coal distributor for a lime kiln, which is characterized in that the front end of a pulverized coal pipe at the front end of a drying explosion-proof cylinder is fixedly connected with the rear end of a distribution cavity through a connecting flange; the nitrogen blowing pipe is fixedly arranged on the right side of the blowing ring, and the waste heat flue gas blowing pipe is fixedly arranged on the left side of the blowing ring. The blowing ring is fixedly arranged at the bottom of the fixed flange; the humidity sensors are bilaterally symmetrically arranged at the rear end of the drying anti-explosion cylinder, the temperature sensors are bilaterally symmetrically arranged at the positions, close to the front end, of the drying anti-explosion cylinder, and the flow sensors are vertically symmetrically arranged on the front sides of the temperature sensors. The device has the advantages that the concentration of pulverized coal mixed airflow is adjusted, meanwhile, the pulverized coal mixed airflow is converted into the nitrogen atmosphere from the low-oxygen atmosphere, and therefore the explosion phenomenon caused by spontaneous combustion of the pulverized coal mixed airflow is prevented, and even mixing and drying of the pulverized coal mixed airflow with high humidity are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal powder distributors for lime kilns, and specifically relates to an integrated intelligent coal powder distributor for lime kilns. Background Technology

[0002] The pulverized coal distributor is a core piece of equipment in a lime kiln, primarily used to evenly distribute pulverized coal into the kiln burner, ensuring complete combustion. The pulverized coal distributor consists of a main coal conveying pipe, a distribution chamber, and multiple branch pipes. Pulverized coal mixes with the airflow generated by the blower and enters the conical cavity at the bottom of the distributor through the main coal conveying pipe. Upon entering the conical cavity, the mixed airflow forms a high-intensity vortex due to velocity changes. This vortex envelops the pulverized coal particles, and utilizing centrifugal force and the gas-solid two-phase flow characteristics, evenly distributes the pulverized coal into each branch pipe. Finally, the pulverized coal is evenly transported to the lime kiln burner through each branch pipe. The burner then injects the pulverized coal into the lime kiln, thereby improving the complete combustion of the pulverized coal and reducing the energy consumption of the lime kiln.

[0003] The patent, CN201811558233.8, entitled "A Pulverized Coal Spray Distributor," specifically describes a device comprising "a connecting flange, a main spray pipe, a cone, a ceramic tube, spray branch pipes, a stainless steel gasket, an end cap, and fixing bolts. Tungsten carbide is welded onto the pressure-bearing, vulnerable surface of the end caps. A ceramic tube is embedded in the inner wall of the spray branch pipe inside the cone. The inner diameter of the ceramic tube is consistent with the inner diameter of the external branch pipe, preventing turbulence during coal powder transport from causing wear on the inner wall." The main technical problem with this prior art pulverized coal distributor is the lack of humidity and concentration control functions for the pulverized coal. If the pulverized coal has high humidity, it easily adheres to the inner wall surface of the distribution chamber. Furthermore, the adhered pulverized coal can cause the local temperature in the distribution chamber to rise to the ignition point of the pulverized coal, leading to oxidation and combustion, and even an explosion risk. Meanwhile, if the concentration of pulverized coal reaches 1.2~2.0 kg / m³ (the explosion-sensitive range) and the volatile matter content is ≥25%, pulverized coal is prone to forming an enrichment of combustible mixture, thus posing an explosion risk. Based on the aforementioned deficiencies in existing technologies, the inventors have developed an integrated intelligent pulverized coal distributor for lime kilns, which effectively solves the aforementioned technical problems in existing technologies. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated intelligent coal powder distributor for lime kilns. The structure of this utility model is scientifically and rationally designed and simple. This utility model integrates the drying and explosion-proof device with the distribution pipe and the distribution cavity into a whole. At the same time, through the automatic intelligent linkage control of the control system, it solves the problem that coal powder is prone to sticking and exploding in the distribution cavity of the existing distributor.

[0005] The technical solution adopted by this utility model is as follows: an integrated intelligent coal powder distributor for lime kilns, including a mounting frame, a control system, and a distribution pipe. The mounting frame is U-shaped. The control system is fixedly installed at the middle position of the left side of the right side of the mounting frame. The distribution pipe is evenly arranged around the circumference of the distribution cavity and communicates with the interior of the distribution cavity. The distribution pipe is located at the front end of the distribution cavity. A sealing flange is fixedly installed at the front end of the distribution cavity, which is a hollow shape with a cylindrical front end and a conical rear end. A short pipe is fixedly installed at the center of the rear end of the distribution cavity, and the short pipe is a hollow cylindrical shape. A drying and explosion-proof device is fixedly installed at the rear end of the distribution cavity. The drying and explosion-proof device includes a drying and explosion-proof cylinder, and coal powder pipes are fixedly installed at the front and rear ends of the drying and explosion-proof cylinder. The front end of the coal powder pipe at the front end of the drying and explosion-proof cylinder is fixedly connected to the rear end of the distribution cavity through a connecting flange. The fixing flange is fixedly installed at the front end of the drying and explosion-proof cylinder. Near the rear end of the explosion-proof drying cylinder, a nitrogen blowing pipe is fixedly installed on the right side of the blowing ring, and a waste heat flue gas blowing pipe is fixedly installed on the left side of the blowing ring. Solenoid valves are fixedly installed at the outer ends of both the nitrogen blowing pipe and the waste heat flue gas blowing pipe. The blowing ring is fixedly installed at the bottom of the fixed flange. The blowing ring is a hollow circular ring. Branch pipes are evenly and equidistantly arranged around the front side of the blowing ring. The rear end of the branch pipes is connected to the blowing ring, and the front end of the branch pipes is fixedly connected to the rear end of the explosion-proof drying cylinder. Humidity sensors are symmetrically arranged on both sides at the rear end of the explosion-proof drying cylinder. Temperature sensors are symmetrically arranged on both sides near the front end of the explosion-proof drying cylinder. Flow sensors are symmetrically arranged vertically in front of the temperature sensors. The flow sensors are fixedly connected to the outer shell of the explosion-proof drying cylinder. Corrugated partition plates are evenly and fixedly arranged around the inner rear wall of the explosion-proof drying cylinder.

[0006] The mounting bracket is fixedly installed on one side of the support of the lime kiln burner. The front side of the mounting bracket is installed in the distribution chamber near the rear end, and the rear side of the mounting bracket is installed in the drying explosion-proof cylinder near the rear end.

[0007] The control system includes a control box, which is fixedly installed in the middle of the left side of the right side of the mounting bracket. The PLC control module is fixedly installed inside the rear side of the control box, and the interactive display screen is located in the center of the left side of the control box. The PLC control module is fixedly connected to the interactive display screen through signal lines. The humidity sensor, temperature sensor, and flow sensor are fixedly connected to the PLC control module through signal lines.

[0008] The drying explosion-proof cylinder includes an upper conical cylinder and a lower conical cylinder, which are integrally formed in one piece. A pulverized coal pipe is fixedly installed at the rear end of the upper conical cylinder, and a pulverized coal pipe is fixedly installed at the front end of the lower conical cylinder. The pulverized coal pipe fixedly installed at the rear end of the upper conical cylinder is fixedly connected to the main pulverized coal pipe, and the upper solenoid valve of the main pulverized coal pipe is fixedly connected to the PLC control module through a signal line.

[0009] The nitrogen blowing pipe and the waste heat flue gas blowing pipe are arranged horizontally and symmetrically. The nitrogen blowing pipe and the waste heat flue gas blowing pipe are fixedly connected to the blowing ring. The solenoid valve on the nitrogen blowing pipe is fixedly connected to the nitrogen tank through the nitrogen pipe, and the solenoid valve on the waste heat flue gas blowing pipe is fixedly connected to the exhaust pipe of the lime kiln through the waste heat flue gas pipe. The solenoid valves on the nitrogen blowing pipe and the waste heat flue gas blowing pipe are fixedly connected to the PLC control module through signal lines.

[0010] The branch pipe is a bent pipe, and the front end of the branch pipe is fixedly connected to the burner of the lime kiln.

[0011] The wave-shaped partition plates are evenly distributed in four to eight on the inner rear wall of the drying explosion-proof cylinder, and the wave-shaped partition plates are narrow at the rear and wide at the front.

[0012] The temperature of the waste heat flue gas introduced by the waste heat flue gas injection pipe is controlled within the range of 40℃~50℃.

[0013] The working process of this integrated intelligent pulverized coal distributor for lime kilns is as follows: First, the operator presets the pulverized coal concentration threshold (2.0 kg / m³), the temperature threshold in the drying explosion-proof cylinder (90℃), and the pulverized coal humidity threshold (3%) through the interactive display screen of the control system. The storage module of the control system saves the above-set thresholds. When pulverized coal is supplied to the burner of the lime kiln, the control system and solenoid valve are activated. The pulverized coal mixture airflow supplied by the pulverized coal main pipe first passes through the drying explosion-proof cylinder of the drying explosion-proof device. At this time, the corrugated partition plate set on the inner wall of the upper conical cylinder of the drying explosion-proof cylinder divides and mixes the pulverized coal mixture airflow, prolonging the residence time of the pulverized coal mixture airflow in the upper conical cylinder. At this time, the humidity sensor detects the humidity value of the pulverized coal mixture airflow in real time and transmits the humidity value to the PLC control module in real time. When the humidity value of the pulverized coal mixture airflow is greater than the humidity threshold (3%), then... The PLC control module sends an opening control command to the solenoid valve on the waste heat flue gas injection pipe. The waste heat flue gas enters the upper conical cylinder of the drying explosion-proof cylinder through the waste heat flue gas injection pipe to dry the pulverized coal mixture. When the humidity of the pulverized coal mixture is less than the humidity threshold, the PLC control module sends a stop control command to the solenoid valve on the waste heat flue gas injection pipe to stop the delivery of waste heat flue gas. At the same time, temperature and flow sensors monitor the temperature and flow rate (concentration) of the pulverized coal mixture in the drying explosion-proof cylinder in real time. When the temperature of the pulverized coal mixture exceeds the threshold, the system will stop the flow of waste heat flue gas. When the temperature threshold (90℃) or the coal powder concentration exceeds the concentration threshold (2.0kg / m³) in the drying explosion-proof cylinder, the PLC control module sends an opening control command to the solenoid valve on the nitrogen injection pipe. The nitrogen injection pipe delivers nitrogen to the drying explosion-proof cylinder through the solenoid valve and the nitrogen injection pipe, creating a nitrogen atmosphere for the coal powder mixture in the drying explosion-proof cylinder. Simultaneously, the PLC control module sends a reducing control command to the solenoid valve above the coal powder main pipe, causing the coal powder main pipe to reduce the concentration of the coal powder mixture, preventing the coal powder mixture from deteriorating due to increased concentration or temperature. The risk of spontaneous combustion and explosion due to the temperature rise; when the temperature and concentration of the coal powder mixed gas flow in the dry explosion-proof cylinder are less than the temperature threshold or concentration threshold, the PLC control module sends a control command to the solenoid valve on the nitrogen injection pipe to close, and the solenoid valve on the nitrogen injection pipe is in the closed state; finally, the coal powder mixed gas flow is transported to the distribution chamber through the short pipe, the coal powder mixed gas flow is further mixed in the distribution chamber, and the coal powder mixed gas flow is evenly distributed and transported to the burner of the lime kiln through the distribution pipe, and the coal powder is evenly injected into the lime kiln by the burner to generate a completely combusted atmosphere.

[0014] The beneficial effects of this utility model are as follows: by integrating the drying explosion-proof device with the distribution pipe and distribution cavity into a whole, and by automatically and intelligently linking the control system, the concentration of the coal powder mixed airflow is adjusted, and the coal powder mixed airflow is changed from a low oxygen atmosphere to a nitrogen atmosphere, which effectively prevents the spontaneous combustion of the coal powder mixed airflow, thereby preventing the explosion caused by the spontaneous combustion of the coal powder mixed airflow. It also achieves uniform mixing and drying of the coal powder mixed airflow with high humidity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Cross-sectional view;

[0017] Figure 3 This is a cross-sectional view of the explosion-proof drying cylinder of this utility model;

[0018] The diagram shows the following markings: 1. Mounting bracket; 2. Control system; 21. Control box; 22. PLC control module; 23. Interactive display screen; 3. Distribution pipe; 4. Sealing flange; 5. Distribution chamber; 6. Short pipe; 7. Connecting flange; 8. Drying explosion-proof device; 81. Drying explosion-proof cylinder; 801. Upper conical cylinder; 802. Lower conical cylinder; 82. Pulverized coal pipe; 83. Fixed flange; 84. Nitrogen injection pipe; 85. Waste heat flue gas injection pipe; 86. Solenoid valve; 87. Injection ring; 88. Branch pipe; 89. Humidity sensor; 810. Temperature sensor; 811. Flow sensor; 812. Corrugated partition plate. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] This utility model provides an integrated intelligent coal powder distributor for lime kilns:

[0021] like Figure 1 As shown, the mounting bracket 1 is U-shaped. The mounting bracket 1 is fixedly installed on one side of the support of the lime kiln burner. The front side of the mounting bracket 1 is installed in the distribution chamber 5 near the rear end, and the rear side of the mounting bracket 1 is installed in the drying explosion-proof cylinder 81 near the rear end.

[0022] The mounting bracket 1, as described above, provides a fixed mounting location for the control system 2, improving the stability of its fixed installation. Furthermore, the mounting bracket 1 supports the distribution chamber 5 and the drying explosion-proof device 8, thereby improving their axial stability while maintaining their axial levelness.

[0023] like Figure 1 As shown in Figure 2, the distribution pipe 3 is evenly arranged around the circumference of the distribution cavity 5 and communicates with the interior of the distribution cavity 5. The distribution pipe 3 is located at the front end of the distribution cavity 5. The sealing flange 4 is fixedly installed at the front end of the distribution cavity 5. The distribution cavity 5 is a hollow shape with a cylindrical front end and a conical rear end. The short pipe 6 is fixedly installed at the center of the rear end of the distribution cavity 5. The short pipe 6 is a hollow cylindrical shape.

[0024] The above-mentioned arrangement of distribution pipe 3, sealing flange 4, distribution cavity 5 and short pipe 6 utilizes the conical distribution cavity 5 to uniformly mix the coal powder mixed airflow, and at the same time utilizes distribution pipe 3 to uniformly transport the coal powder mixed airflow to the burner, thereby achieving the function of uniformly distributing coal powder.

[0025] like Figure 1 As shown, pulverized coal pipes 82 are fixedly installed at the front and rear ends of the drying explosion-proof cylinder 81; the front end of the pulverized coal pipe 82 at the front end of the drying explosion-proof cylinder 81 is fixedly connected to the rear end of the distribution chamber 5 through a connecting flange 7; the drying explosion-proof cylinder 81 includes an upper conical cylinder 801 and a lower conical cylinder 802, which are integrally formed in one piece; the pulverized coal pipe 82 is fixedly installed at the rear end of the upper conical cylinder 801, and the pulverized coal pipe 82 is fixedly installed at the front end of the lower conical cylinder 802; the pulverized coal pipe 82 fixedly installed at the rear end of the upper conical cylinder 801 is fixedly connected to the main coal conveying pipe.

[0026] The aforementioned arrangement of the drying explosion-proof cylinder 81, as well as the upper conical cylinder 801 and the lower conical cylinder 802, along with the use of the corrugated partition plates 812 uniformly arranged on the inner wall of the upper conical cylinder 801, enhances the mixing and homogenization of the pulverized coal mixture airflow. Furthermore, it extends the residence time of the pulverized coal mixture airflow within the drying explosion-proof cylinder 81, providing the necessary conditions for real-time detection of the humidity, temperature, and concentration of the pulverized coal mixture airflow.

[0027] like Figure 1 As shown in Figure 2, the fixed flange 83 is fixedly installed on the pulverized coal pipe 82 at the rear end of the drying explosion-proof cylinder 81, near the rear end position; the nitrogen blowing pipe 84 is fixedly installed on the right side of the blowing ring 87, and the waste heat flue gas blowing pipe 85 is fixedly installed on the left side of the blowing ring 87. Solenoid valves 86 are fixedly installed at the outer ends of the nitrogen blowing pipe 84 and the waste heat flue gas blowing pipe 85; the blowing ring 87 is fixedly installed at the bottom of the fixed flange 83. The blowing ring 87 is a hollow ring. The branch pipe 88 is evenly and equally angled around the front side of the blowing ring 87. The rear end of the branch pipe 88 is connected to the blowing ring 87, and the front end of the branch pipe 88 is fixedly connected to the rear end position of the drying explosion-proof cylinder 81.

[0028] The above-mentioned configuration of the injection ring 87, branch pipe 88, nitrogen injection pipe 84, waste heat flue gas injection pipe 85, and solenoid valve 86, under the automatic linkage control of PLC control module 22 and humidity sensor 89, temperature sensor 810, and flow sensor 811, achieves automatic and intelligent control of nitrogen delivery and preheated flue gas delivery. On the other hand, it can achieve intelligent control of the humidity of the pulverized coal mixture airflow, as well as intelligent control of the temperature and concentration of the pulverized coal mixture airflow.

[0029] The aforementioned arrangement of the injection ring 87 and branch pipe 88 allows for the uniform delivery of nitrogen or preheated flue gas into the drying explosion-proof cylinder 81 when nitrogen or preheated flue gas is supplied. This, in turn, dries the pulverized coal mixture, ensuring its humidity level remains below the humidity threshold and effectively preventing adhesion and blockage within the cylinder. Furthermore, it alters the atmosphere of the pulverized coal mixture within the cylinder, transforming it from a low-oxygen atmosphere to a nitrogen atmosphere, effectively preventing spontaneous combustion and thus preventing explosions caused by such combustion.

[0030] like Figure 1 As shown, humidity sensor 89 is symmetrically arranged at the rear end of drying explosion-proof cylinder 81, temperature sensor 810 is symmetrically arranged at the front end of drying explosion-proof cylinder 81, and flow sensor 811 is symmetrically arranged vertically in front of temperature sensor 810. Flow sensor 811 is fixedly connected to the outer shell of drying explosion-proof cylinder 81. Humidity sensor 89, temperature sensor 810, and flow sensor 811 are fixedly connected to PLC control module 22 via signal lines.

[0031] The above-mentioned setup, through the coordinated configuration of humidity sensor 89, temperature sensor 810, flow sensor 811 and PLC control module 22, utilizes the PLC control module 22 to receive the humidity, temperature and concentration values ​​detected in real time by humidity sensor 89, temperature sensor 810 and flow sensor 811. Simultaneously, it coordinates with the intelligent linkage control of solenoid valves 86 on nitrogen injection pipe 84 and waste heat flue gas injection pipe 85, and uses the humidity, temperature and concentration thresholds of pulverized coal mixed airflow as control conditions to achieve automatic and intelligent start-up and shut-off control of nitrogen and waste heat flue gas.

[0032] like Figure 1 As shown, the nitrogen blowing pipe 84 and the waste heat flue gas blowing pipe 85 are arranged horizontally in a symmetrical manner; the nitrogen blowing pipe 84 and the waste heat flue gas blowing pipe 85 are fixedly connected to the blowing ring 87; the solenoid valve 86 on the nitrogen blowing pipe 84 is fixedly connected to the nitrogen tank through the nitrogen pipe, and the solenoid valve 86 on the waste heat flue gas blowing pipe 85 is fixedly connected to the exhaust pipe of the lime kiln through the waste heat flue gas pipe.

[0033] When nitrogen is supplied to the drying explosion-proof cylinder 81, on the one hand, the nitrogen is used to change the coal powder mixture from a low-oxygen atmosphere to a nitrogen atmosphere, which effectively prevents the spontaneous combustion of the coal powder mixture and thus prevents the explosion caused by the spontaneous combustion of the coal powder mixture; on the other hand, the nitrogen is used to reduce the temperature of the coal powder mixture in the drying explosion-proof cylinder 81.

[0034] like Figure 2 or Figure 3 As shown, there are four to eight corrugated partition plates 812 evenly distributed around the inner rear end of the drying explosion-proof cylinder 81. The corrugated partition plates 812 are corrugated with a narrow rear end and a wide front end.

[0035] The main purpose of the above configuration is twofold: firstly, to achieve uniform mixing of the coal powder mixture and the airflow; and secondly, to extend the residence time of the coal powder mixture in the drying explosion-proof cylinder 81.

[0036] like Figure 1-3As shown, the working process of this integrated intelligent coal powder distributor for lime kilns is as follows: First, the operator presets the coal powder concentration threshold (2.0 kg / m³), the temperature threshold (90°C) in the drying explosion-proof cylinder 81, and the coal powder humidity threshold (3%) through the interactive display screen 23 of the control system 2. The storage module of the control system 2 saves the above-set thresholds. When coal powder is supplied to the burner of the lime kiln, the control system 2 and the solenoid valve 86 are activated. The coal powder mixed airflow supplied by the coal powder main pipe first passes through the drying explosion-proof cylinder 81 of the drying explosion-proof device 8. At this time, the corrugated partition plate 812 set on the inner wall of the upper conical cylinder 801 of the drying explosion-proof cylinder 81 divides and mixes the coal powder mixed airflow, prolonging the residence time of the coal powder mixed airflow in the upper conical cylinder 801. At this time, the humidity sensor 89 detects the humidity value of the coal powder mixed airflow in real time and transmits the humidity value to the PLC control module 22 in real time. When the humidity value of the coal powder mixed airflow is greater than the humidity threshold (3%), the system automatically stops discharging the coal powder mixed airflow. The PLC control module 22 sends an opening control command to the solenoid valve 86 on the waste heat flue gas injection pipe 85. The waste heat flue gas enters the upper conical cylinder 801 of the drying explosion-proof cylinder 81 through the waste heat flue gas injection pipe 85 to dry the pulverized coal mixture. When the humidity of the pulverized coal mixture is less than the humidity threshold, the PLC control module 22 sends a stop control command to the solenoid valve 86 on the waste heat flue gas injection pipe 85 to stop the delivery of waste heat flue gas. At the same time, the temperature sensor 810 and the flow sensor 811 detect the temperature value and the flow rate (concentration) value of the pulverized coal mixture in the drying explosion-proof cylinder 81 in real time. When the temperature of the flow exceeds the temperature threshold (90℃) in the drying explosion-proof cylinder 81 or the concentration of pulverized coal exceeds the concentration threshold (2.0 kg / m³), the PLC control module 22 sends an opening control command to the solenoid valve 86 on the nitrogen injection pipe 84. The nitrogen injection pipe 84 delivers nitrogen to the drying explosion-proof cylinder 81 through the solenoid valve 86 and the nitrogen injection pipe 84, so that the pulverized coal mixture in the drying explosion-proof cylinder 81 is in a nitrogen atmosphere. At the same time, the PLC control module 22 sends a control command to the solenoid valve above the pulverized coal main pipe to reduce the opening degree. The pulverized coal main pipe will reduce the concentration of the pulverized coal mixture, preventing the pulverized coal mixture from becoming too concentrated. The risk of spontaneous combustion and explosion caused by temperature rise or temperature increase; when the temperature and concentration values ​​of the coal powder mixed gas flow in the dry explosion-proof cylinder 81 are less than the temperature threshold or concentration threshold, the PLC control module 22 sends a closing control command to the solenoid valve 86 on the nitrogen injection pipe 84, and the solenoid valve 86 on the nitrogen injection pipe 84 is in the closed state; finally, the coal powder mixed gas flow is transported to the distribution chamber 5 through the short pipe 6, the coal powder mixed gas flow is further mixed in the distribution chamber 5, and the coal powder mixed gas flow is evenly distributed and transported to the burner of the lime kiln through the distribution pipe 3, and the burner evenly sprays coal powder into the lime kiln to generate a completely combusted atmosphere.

[0037] Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated intelligent pulverized coal distributor for a lime kiln, comprising a mounting frame, a control system, and a distribution pipe. The mounting frame is U-shaped. The control system is fixedly positioned at the middle of the left side of the right side of the mounting frame. The distribution pipe is evenly distributed around the circumference of the distribution cavity and communicates with the interior of the distribution cavity. The distribution pipe is positioned near the front end of the distribution cavity. A sealing flange is fixedly positioned at the front end of the distribution cavity, which is a hollow cavity with a cylindrical front end and a conical rear end. A short pipe is fixedly positioned at the center of the rear end of the distribution cavity and is a hollow cylindrical shape. The device is characterized by: The drying explosion-proof device is fixedly installed at the rear end of the distribution chamber. The device includes a drying explosion-proof cylinder, with pulverized coal pipes fixedly installed at both the front and rear ends of the cylinder. The front end of the pulverized coal pipe at the front end of the drying explosion-proof cylinder is fixedly connected to the rear end of the distribution chamber via a connecting flange. The fixed flange is fixedly installed on the pulverized coal pipe at the rear end of the drying explosion-proof cylinder, near the rear end. A nitrogen blowing pipe is fixedly installed on the right side of the blowing ring, and a waste heat flue gas blowing pipe is fixedly installed on the left side of the blowing ring. Solenoid valves are fixedly installed at the outer ends of both the nitrogen blowing pipe and the waste heat flue gas blowing pipe. The blowing ring is fixedly installed at... At the bottom of the fixed flange, the blow ring is a hollow circular ring. Branch pipes are evenly and equidistantly arranged around the front side of the blow ring. The rear end of the branch pipe is connected to the blow ring, and the front end of the branch pipe is fixedly connected to the rear end of the drying explosion-proof cylinder. Humidity sensors are symmetrically arranged at the rear end of the drying explosion-proof cylinder, temperature sensors are symmetrically arranged at the front end of the drying explosion-proof cylinder, and flow sensors are symmetrically arranged vertically in front of the temperature sensors. The flow sensors are fixedly connected to the outer shell of the drying explosion-proof cylinder. Corrugated partition plates are evenly and fixedly arranged around the inner wall of the rear end of the drying explosion-proof cylinder.

2. The integrated intelligent pulverized coal distributor for lime kiln according to claim 1, characterized in that: The mounting bracket is fixedly installed on one side of the support of the lime kiln burner. The front side of the mounting bracket is installed near the rear end of the distribution chamber, and the rear side of the mounting bracket is installed near the rear end of the drying explosion-proof cylinder.

3. The integrated intelligent coal powder distributor for lime kilns according to claim 1, characterized in that: The control system includes a control box, which is fixedly installed in the middle of the left side of the right side of the mounting bracket. The PLC control module is fixedly installed inside the rear side of the control box, and the interactive display screen is located in the center of the left side of the control box. The PLC control module is fixedly connected to the interactive display screen through signal lines. The humidity sensor, temperature sensor, and flow sensor are fixedly connected to the PLC control module through signal lines.

4. The integrated intelligent pulverized coal distributor for lime kiln according to claim 1, characterized in that: The drying explosion-proof cylinder includes an upper conical cylinder and a lower conical cylinder, which are integrally formed in one piece. A pulverized coal pipe is fixedly installed at the rear end of the upper conical cylinder, and a pulverized coal pipe is fixedly installed at the front end of the lower conical cylinder. The pulverized coal pipe fixedly installed at the rear end of the upper conical cylinder is fixedly connected to the main pulverized coal pipe, and the upper solenoid valve of the main pulverized coal pipe is fixedly connected to the PLC control module through a signal line.

5. The integrated intelligent pulverized coal distributor for lime kiln according to claim 1, characterized in that: The nitrogen blowing pipe and the waste heat flue gas blowing pipe are arranged horizontally and symmetrically. The nitrogen blowing pipe and the waste heat flue gas blowing pipe are fixedly connected to the blowing ring. The solenoid valve on the nitrogen blowing pipe is fixedly connected to the nitrogen tank through the nitrogen pipe, and the solenoid valve on the waste heat flue gas blowing pipe is fixedly connected to the exhaust pipe of the lime kiln through the waste heat flue gas pipe. The solenoid valves on the nitrogen blowing pipe and the waste heat flue gas blowing pipe are fixedly connected to the PLC control module through signal lines.

6. The integrated intelligent pulverized coal distributor for lime kiln according to claim 1, characterized in that: The branch pipe is a bent pipe, and the front end of the branch pipe is fixedly connected to the burner of the lime kiln.

7. The integrated intelligent pulverized coal distributor for lime kiln according to claim 1, characterized in that: The wave-shaped partition plates are evenly distributed in four to eight around the inner rear end of the drying explosion-proof cylinder, and the wave-shaped partition plates are narrow at the rear end and wide at the front end.

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