Intelligent industrial pyrolysis system and method

Abstract

The invention discloses an intelligent industrial pyrolysis system and method, and relates to the technical field of cement pyrolyzing.The intelligent industrial pyrolysis system comprises a pyrolyzing furnace, a decomposing furnace, a rotary kiln and a grate cooler which are sequentially connected, and the pyrolysis system is provided with a raw material pretreatment assembly which enables fuel to be combusted more sufficiently and heats raw materials more uniformly; an outlet of the raw material pretreatment assembly communicates with an inlet of the pyrolyzing furnace and an inlet of the decomposing furnace. The raw material pretreatment assemblies are arranged at the inlet of the pyrolyzing furnace and the inlet of the decomposing furnace, the raw materials are pretreated through the raw material pretreatment assemblies, fuel is combusted more sufficiently, the raw materials are heated more uniformly, and cement clinker produced through the pyrolyzing system is higher in quality and higher in quality. The technical problems that in an existing pyrolysis system of the cement industry, a raw material pretreatment step which enables fuel to be combusted more sufficiently and raw materials to be heated more uniformly does not exist, and the quality of cement clinker produced by the pyrolysis system needs to be improved are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cement pyrolysis, and particularly to an intelligent industrial pyrolysis system and method. Background Art

[0002] As a basic material industry, the cement industry plays a crucial role in the global economic construction. Among them, the cement industrial pyrolysis system is even more crucial in the entire cement production process. The cement industry is under great development pressure due to problems such as high energy consumption, overcapacity, and high resource dependence.

[0003] Among the pyrolysis systems of the cement industry, the main production equipment includes pyrolyzers, decomposition furnaces, rotary kilns, and grate coolers, etc. In the pyrolysis system of the cement industry, fuel combustion is more complete, and the raw materials are heated more evenly, and the quality of the produced cement is higher. Therefore, how to make fuel combustion more complete and heat the raw materials more evenly is a problem to be solved.

[0004] In the actual production process, it is found that after the raw materials for cement production are pretreated and then put into production, fuel combustion is more complete and the raw materials can be heated more evenly. However, there is no raw material pretreatment component in the existing cement industrial pyrolysis system to make fuel combustion more complete and heat the raw materials more evenly, resulting in the need to improve the quality of the cement clinker produced by the pyrolysis system. Summary of the Invention

[0005] In view of the above deficiencies in the background art, the present invention proposes an intelligent industrial pyrolysis system and method, which solves the technical problem that there is no raw material pretreatment step in the existing cement industrial pyrolysis system to make fuel combustion more complete and heat the raw materials more evenly, and the quality of the cement clinker produced by the pyrolysis system needs to be improved.

[0006] The technical solution of the present invention is realized as follows: An intelligent industrial pyrolysis system includes a pyrolyzer, a decomposition furnace, a rotary kiln, and a grate cooler connected in sequence. A raw material pretreatment component for making fuel combustion more complete and heating the raw materials more evenly is provided on the pyrolysis system, and the outlet of the raw material pretreatment component is respectively communicated with the inlet of the pyrolyzer and the inlet of the decomposition furnace. In this application, a raw material pretreatment component is provided at the inlet of the pyrolyzer and the inlet of the decomposition furnace, and the raw materials are pretreated by the raw material pretreatment component, so that fuel combustion is more complete and the raw materials are heated more evenly. The quality of the cement clinker produced by using this pyrolysis system is higher, which solves the technical problem that there is no raw material pretreatment step in the existing cement industrial pyrolysis system to make fuel combustion more complete and heat the raw materials more evenly, and the quality of the cement clinker produced by the pyrolysis system needs to be improved.

[0007] Among them, the pyrolysis furnace is a device used to heat-treat garbage under anaerobic or anoxic conditions. The garbage is heated to a relatively high temperature (usually between 300°C and 600°C) in the pyrolysis furnace, and the organic matter decomposes into small-molecule gases, liquids (referred to as pyrolysis oil or bio-oil), and solid residues. During the pyrolysis process, the moisture in the garbage is first removed, and then the organic matter decomposes into simpler molecules, generating combustible gases, liquids, carbon black and other substances. The decomposition furnace is mainly used in the cement production process. Through the "vortex effect", "spouting effect", etc., the raw meal and fuel are highly dispersed and evenly mixed, heat exchange occurs rapidly, the residence time of the material in the furnace is extended, and the combustion efficiency and carbonate decomposition rate are improved. The design of the decomposition furnace mainly depends on the burnout time required for the fuel to ensure the balance between calcium carbonate decomposition and fuel combustion. The rotary kiln is an inclined steel cylinder device with a refractory lining or a tube water wall on the inner wall. After the garbage enters the rotary kiln, it tumbles and advances as the cylinder rotates, completing the entire process of drying, ignition, combustion, and burnout. By adjusting the rotation speed of the cylinder, the residence time of the garbage in the kiln can be flexibly controlled. The grate cooler, that is, the grate-type cooler, is a type of rapid-cooling cooler. After the clinker enters the grate-type cooler from the rotary kiln, it forms a material layer with a certain thickness on the grate plate. The cold air blown in passes through the moving material layer on the grate bed in a direction perpendicular to each other, causing the clinker to be rapidly cooled. The clinker can be rapidly cooled from 1300 - 1400°C to below 100°C within a few minutes. Finally, the grate cooler of this application separates and purifies the pyrolysis products and by-products generated during the pyrolysis process, obtains high-value-added organic matter and other products, and converts them into valuable chemicals or energy.

[0008] Among them, drones can be used to search for the raw materials required for cement production. The drones are equipped with high-resolution spectral sensors, infrared thermal imagers, lidar, high-definition cameras, artificial intelligence recognition algorithms, geological exploration instruments and other devices to widely search for cement alternative fuels, improving resource utilization rate and algorithm accuracy. By constructing a storage system, the volatility of the supply of cement production raw materials can be addressed. Using automation technology, automated unloading equipment, material conveying systems and inventory management systems are adopted, and sensors are installed to assist in real-time monitoring of parameters such as material reserves, humidity, and volume, so as to make timely adjustments.

[0009] Drone technology can conduct in-depth geological exploration and resource detection through large-area scanning and geological structure analysis. By equipping drones with high-definition cameras, infrared thermal imagers, lidar and other devices for large-area scanning, rapid and refined scanning of vast areas can be achieved. Technicians can conduct real-time image analysis and data processing based on the information fed back by drones to identify potential raw material ore sources with mining value. Drones can carry geological exploration instruments to detect the ground during flight and obtain information on underground geological structures. By analyzing these data, the distribution of minerals suitable as cement substitute raw materials in different strata can be understood, providing a basis for narrowing the scope of subsequent mining and utilization.

[0010] Drones can conduct waste inspections on various factories, waste treatment plants, etc. in industrial agglomeration areas or around cities to search for industrial wastes that can be used as cement substitute raw materials, such as fly ash, slag, steel slag, tailings, etc., and determine the output, composition and distribution of the wastes through spectral sensor detection. In agricultural production areas, drones conduct large-area farmland inspections to understand the output and distribution of crop straw. After being processed, crop straw can be used as a biomass fuel or partially replace the organic components in cement production. Drones can quickly grasp the distribution and availability of resources, helping to quickly lock in the raw material storage areas. In coastal areas, drone technology is combined with marine exploration equipment to survey the reserves, particle size distribution and impurity content of sea sand in shallow sea areas, explore marine minerals, and use artificial intelligence algorithms to screen possible substitute raw materials or additives.

[0011] Preferably, the pretreatment component includes a storage bin, a homogenizing dryer for drying, crushing and grinding is provided on the side of the storage bin, a mechanical arm for grabbing raw materials is provided between the storage bin and the homogenizing dryer, the discharge port of the homogenizing dryer is connected to a belt conveyor, the discharge port of the belt conveyor is connected to a preheater, and the discharge port of the preheater is respectively connected to the entrance of the pyrolysis furnace and the entrance of the decomposition furnace. The homogenizing dryer is set to monitor the moisture content of the raw materials in real time, and the moisture monitoring data is fed back to the drying equipment control system by establishing a moisture monitoring and closed-loop control system, and the drying equipment parameters are automatically adjusted according to the moisture content target value set according to the characteristics of the raw materials, so as to achieve accurate drying of the raw materials. And the raw materials are crushed and ground by the homogenizing dryer, so that the powder fineness of the raw materials is higher, which is more conducive to the pyrolysis of the raw materials and effectively improves the quality of cement clinker. Among them, crushing and grinding are a combination of selective crushing and lamination crushing. According to the characteristics of different materials, the parameters of the crushing chamber type, rotation speed, and discharge port size of the crusher are adjusted to achieve accurate crushing of the material and reduce the particle size distribution range of the product (generally, the powder requires a fineness of 80μm with a sieve residue of 10%-15%, 20%-30%, or a fineness of 45μm with a sieve residue of 10% - 20%). Further, according to the characteristics of the raw materials, it is selected whether to grind or not. By adjusting the parameters of the grinding system such as the mill speed, filling rate, and grinding body gradation, efficient grinding of the material can be achieved, the fineness and specific surface area of ​​the product can be reduced, and the activity and reaction speed of the product can be improved. Among them, the cone crusher, impact crusher and other equipment can be used to coordinate intelligent control technology to achieve the control of the particle size distribution after crushing by adjusting the equipment parameters, and the multi-layer screening technology can be used to classify the raw materials according to different particle size levels. The operating parameters of the equipment are monitored in real time and adjusted intelligently to improve the operating efficiency and product quality of the equipment. It can process raw materials of various materials more efficiently and achieve the best results.

[0012] The mechanical arm 3 is used to grab the raw materials. The preheater adopts a multi-stage cyclone preheater, which allows the raw material to exchange heat with the high-temperature exhaust gas in different temperature ranges efficiently, gradually increasing the raw material temperature to a state close to the starting temperature of pyrolysis, thereby significantly reducing the energy consumption in the pyrolysis process, realizing the cascade utilization of energy, reducing the heat input required for the raw material to enter the pyrolysis stage, and thus reducing fuel consumption.

[0013] Preferably, the storage bin is provided with a first feed port and a second feed port for automobile transportation, and the first feed port is connected to a feed conveying unit. That is, the storage bin is provided with a first feed port and a second feed port, the first feed port is provided for conveying powdered and granular raw materials, and the second feed port is provided for conveying raw materials with poor fluidity, that is, block raw materials, thereby realizing the conveyance of multiple raw materials into the storage bin and increasing the types of raw materials that can be input.

[0014] Preferably, the feeding and conveying unit includes a storage structure. The discharge port of the storage structure is connected to a screw conveyor, which is communicated with the first feeding port of the storage bin. A first feeding bin door for inputting raw materials is provided on the storage structure. Flow sensors are installed at the feeding port and the discharge port of the screw conveyor to monitor the flow rate change of the material in real time. A level sensor is installed in the storage bin to grasp the storage volume of the material in real time. By transmitting the data collected by the sensors to the central control system, operators can remotely monitor the industrial system and obtain the operating status and material parameters of the feeding device in real time. The screw conveyor uses its rotating screw blades to push the material along the trough, and precisely controls the feeding amount of the material by adjusting the rotation speed of the screw. It is suitable for conveying materials with good fluidity such as powders and granules. In the process of cement batching, the screw structure feeder can accurately convey various raw materials into the mixer according to the preset formula, ensuring the stability of the quality of cement products. The plate feeder has a strong load-bearing capacity and is suitable for conveying large pieces, heavy and abrasive materials. Although the conveying speed is relatively slow, it can bear a large material load and has good wear resistance.

[0015] Preferably, a second feeding bin door for inputting raw materials is provided on the storage structure. The second feeding bin door is connected to a raw material analyzer, and the inlet of the raw material analyzer is connected to a screening and impurity removal equipment group. A feeding port for inputting raw materials is provided on the screening and impurity removal equipment group. Among them, the raw material characteristic analyzer uses analysis technologies such as X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD), and scanning electron microscope (SEM) to analyze the chemical composition, mineral composition, microstructure, etc. of various raw materials and establish a raw material characteristic database, and uses a mathematical model to calculate the raw material ratio.

[0016] The screening and impurity removal equipment group is formed by combining multiple impurity removal equipment such as vibrating screens, electromagnetic and permanent magnet separators, gravity separation, and magnetic separation. By controlling the amplitude, frequency, and screen aperture of the vibrating screen, the magnetic field strength and energization time of the electromagnetic separator, and the magnetic field strength of the permanent magnet separator, the raw materials are impurity-removed multiple times to remove impurities such as soil, sand, iron blocks, and wood chips in the raw materials, improving the purity and quality of the raw materials.

[0017] Preferably, an in-furnace intelligent monitoring sensor is provided on the pyrolysis furnace, and the in-furnace intelligent monitoring sensor is connected to an external processor. The in-furnace intelligent monitoring sensor applies intelligent technologies. By integrating advanced technologies such as artificial intelligence, big data analysis by the external processor, Internet of Things integration, and digital twin, the traditional production mode with high energy consumption and high emissions is gradually turning towards intelligence and low carbon. The Internet of Things technology deploys sensors for temperature, pressure, gas composition, and material flow rate to collect the operation data of key equipment such as rotary kilns and decomposition furnaces in real time, and combines edge computing nodes to perform local preprocessing on high-frequency data to ensure low-latency transmission to the cloud platform, providing a high-precision data basis for subsequent analysis. On this basis, big data analysis technology can use a time-series database to store information in order to identify the optimal operating conditions and establish a prediction model for energy consumption and emissions. The digital twin technology constructs a 3D physical model of the pyrolysis link, integrates real-time data and fluid dynamics simulation, simulates the energy consumption and emission effects of different production strategies, warns of equipment failures in advance, and optimizes the maintenance plan.

[0018] Preferably, the combustible fuel outlet of the pyrolysis furnace is connected to the decomposition furnace. An outlet channel for flue gas and slag to enter is provided on the pyrolysis furnace. The outlet channel is connected to a slag collection unit. The outlet of the slag collection unit is connected to a waste collection bin. The gas outlet of the slag collection unit is connected to a dust collector. The outlet of the dust collector is connected to the outlet channel, and the gas outlet of the dust collector communicates with the outside. That is, the combustible fuel generated by the pyrolysis of the pyrolysis furnace is transported to the decomposition furnace along the combustible fuel outlet. The flue gas and slag generated by the pyrolysis of the pyrolysis furnace enter the slag collection unit along the outlet channel. The slag is collected by the slag collection unit. The flue gas enters the dust collector through the gas outlet of the slag collection unit. The flue gas is discharged to the outside after being dust-removed by the dust collector. The dust filtered and collected by the dust collector re-enters the outlet channel and enters the slag collection unit. The dust and slag are input into the waste collection bin by the slag collection unit. The dust and slag input into the waste collection bin can be transported away by a garbage truck.

[0019] Preferably, the heat dissipation port of the grate cooler is communicated with the homogenizing and drying instrument. Part of the heat dissipated by the grate cooler is transferred to the homogenizing and drying instrument through a pipeline, which greatly ensures the recycling of part of the heat dissipated by the grate cooler and improves the energy utilization rate of the pyrolysis system of this application.

[0020] Preferably, an infrared moisture meter and a microwave moisture meter for real-time monitoring of the moisture content of raw materials are provided in the homogenizing and drying instrument. The homogenizing and drying instrument uses an infrared moisture meter and a microwave moisture meter to monitor the moisture content of raw materials in real time. By establishing a moisture monitoring and closed-loop control system, the moisture monitoring data is fed back to the drying equipment control system, and the drying equipment parameters are automatically adjusted according to the target value of the moisture content set according to the characteristics of the raw materials, realizing precise drying of the raw materials.

[0021] A method for the above intelligent industrial pyrolysis system, comprising: First: Storage. The storage bin is provided with a first feed inlet and a second feed inlet. The powdery and granular raw materials are conveyed along the first feed inlet by means of a storage structure and a screw conveyor, and the raw materials with poor fluidity are conveyed by truck along the second feed inlet; the screening and impurity removal equipment group is an impurity removal equipment combining gravity separation and magnetic separation; after using a drone to quickly lock the raw material storage area, the raw materials are input into the storage bin by truck or manually, wherein the powdery and granular raw materials are conveyed into the storage bin along the first feed inlet by means of a storage structure and a screw conveyor, and the massive raw materials with poor fluidity are conveyed into the storage bin by truck along the second feed inlet.

[0022] Second: Pretreatment. The raw materials in the storage bin are grabbed by a robotic arm and enter a homogenizing and drying instrument. The homogenizing and drying instrument performs drying, crushing, and grinding on the raw materials, and the treated raw materials enter a preheater through a belt conveyor. The preheater performs preheating treatment on the raw materials; that is, the robotic arm grabs the raw materials in the storage bin, and the robotic arm grabs the raw materials into the homogenizing and drying instrument.

[0023] Third: Pyrolysis. The fuel after preheating treatment enters a pyrolysis furnace, and the cement raw materials after preheating treatment and the combustible gas fuel decomposed from the pyrolysis furnace enter a decomposition furnace. The decomposition furnace uses the combustible gas fuel to uniformly mix the cement raw materials; the uniformly mixed combustible gas fuel and cement raw materials enter a rotary kiln for full combustion to form cement clinker.

[0024] Advantages of the present invention: 1. In this application, a raw material pretreatment component is provided at the inlet of the pyrolysis furnace and the inlet of the decomposition furnace. The raw materials are pretreated by using the raw material pretreatment component, so that the fuel burns more fully and heats the raw meal more evenly, and the quality of the cement clinker produced by using this pyrolysis system is higher.

[0025] 2. In this application, a homogenizing and drying instrument is used to crush and grind the raw materials, so that the fineness of the raw material powder is higher, which is more conducive to the pyrolysis of the raw materials and effectively improves the quality of the cement clinker.

[0026] 3. The heat dissipated by the grate cooler in this application is transferred to the homogenizing and drying instrument through a pipeline, which greatly ensures the recycling and reuse of the heat dissipated by the grate cooler and improves the energy utilization rate of the pyrolysis system in this application. Description of the Drawings

[0027] In order to more clearly illustrate the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 Schematic diagram of the present invention.

[0029] Figure 2 Analysis of the characteristics of various raw materials of the present invention.

[0030] In the figure: 1. Screening and impurity removal equipment group, 2. Raw material analyzer, 3. Robot arm, 4. Homogenization and drying instrument, 5. Belt conveyor, 6. Pyrolysis furnace, 7. Intelligent in-furnace monitoring sensor, 8. Calciner, 9. Rotary kiln, 10. Storage structure, 11. Screw conveyor, 12. Storage bin, 13. Preheater, 14. Dust collector, 15. Slag collection unit, 16. Waste collection bin, 17. Grate cooler, 18. Discharge channel. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1, an intelligent industrial pyrolysis system, as Figure 1 shown, includes a pyrolysis furnace 6, a calciner 8, a rotary kiln 9 and a grate cooler 17 connected in sequence. A raw material pretreatment component is provided on the pyrolysis system to make the fuel burn more fully and heat the raw meal more evenly. The outlets of the raw material pretreatment component are respectively communicated with the inlet of the pyrolysis furnace 6 and the inlet of the calciner 8. In this application, a raw material pretreatment component is provided at the inlets of the pyrolysis furnace 6 and the calciner 8, and the raw materials are pretreated by the raw material pretreatment component, so that the fuel burns more fully and heats the raw meal more evenly. The quality of the cement clinker produced by using this pyrolysis system is higher, solving the technical problem that in the existing pyrolysis system of the cement industry, there is no raw material pretreatment step to make the fuel burn more fully and heat the raw meal more evenly, and the quality of the cement clinker produced by the pyrolysis system needs to be improved.

[0033] Among them, the pyrolysis furnace 6 is a device for heating garbage under anaerobic or anoxic conditions. The garbage is heated to a relatively high temperature (usually between 300°C and 600°C) in the pyrolysis furnace 6, and the organic matter decomposes into small-molecule gases, liquids (referred to as pyrolysis oil or bio-oil), and solid residues. During the pyrolysis process, the moisture in the garbage is first removed, and then the organic matter decomposes into simpler molecules, generating combustible gases, liquids, carbon black and other substances. The decomposition furnace 8 is mainly used in the cement production process. Through the "vortex effect", "spouting effect", etc., the raw meal and fuel are highly dispersed and evenly mixed, and heat exchange occurs rapidly, prolonging the residence time of the material in the furnace, improving the combustion efficiency and carbonate decomposition rate. The design of the decomposition furnace 8 mainly depends on the burnout time required for the fuel to ensure the balance between calcium carbonate decomposition and fuel combustion. The rotary kiln 9 is an inclined steel cylinder device with a refractory lining or a tubular water-cooled wall on the inner wall. After the garbage enters the rotary kiln 9, it tumbles and advances as the cylinder rotates, completing the entire process of drying, ignition, combustion, and burnout. By adjusting the rotational speed of the cylinder, the residence time of the garbage in the kiln can be flexibly controlled. The grate cooler 17, that is, the grate cooler, is a quenching cooler. After the clinker enters the grate cooler from the rotary kiln 9, it forms a layer of material with a certain thickness on the grate plate, and the blown-in cold air passes through the moving material layer on the grate bed in a direction perpendicular to each other, causing the clinker to be quenched rapidly. The clinker can be quenched from 1300 - 1400°C to below 100°C within a few minutes. Finally, the grate cooler 17 of the present application separates and purifies the pyrolysis products and by-products generated during the pyrolysis process, obtains high-value-added organic matter and other products, and converts them into valuable chemicals or energy.

[0034] Among them, drones can be used to search for the raw materials required for cement production. The drones are equipped with high-resolution spectral sensors, infrared thermal imagers, lidar, high-definition cameras, artificial intelligence recognition algorithms, geological exploration instruments and other devices to widely search for cement alternative fuels, improving resource utilization rate and algorithm accuracy. By constructing a storage system, the volatility of the cement production raw material supply can be addressed. Using automation technology, automated unloading equipment, material conveying systems and inventory management systems are adopted, and sensors are installed to assist in real-time monitoring of parameters such as material reserves, humidity, and volume, so as to make timely adjustments.

[0035] Drone technology can conduct in-depth geological exploration and resource detection through large-area scanning and geological structure analysis. By equipping drones with high-definition cameras, infrared thermal imagers, lidar and other devices for large-area scanning, rapid and refined scanning of vast areas can be achieved. Technicians can perform real-time image analysis and data processing based on the information fed back by drones to identify raw material ore sources with potential mining value. Drones can carry geological exploration instruments to detect the ground during flight and obtain information on underground geological structures. By analyzing these data, the distribution of minerals that may be suitable as cement alternative raw materials in different strata can be understood, providing a basis for narrowing down the scope of subsequent mining and utilization.

[0036] Drones can conduct waste inspections on various factories, landfills, etc. in industrial agglomeration areas or around cities to search for industrial wastes that can be used as cement alternative raw materials, such as fly ash, slag, steel slag, tailings, etc., and determine the output, composition and distribution of the wastes through spectral sensor detection. In agricultural production areas, drones can conduct large-area farmland inspections to understand the output and distribution of crop straw. After being processed, crop straw can be used as a biomass fuel or partially replace the organic components in cement production. Drones can quickly grasp the distribution and availability of resources and help quickly lock in raw material storage areas. In coastal areas, drone technology is combined with marine exploration equipment to survey the reserves, particle size distribution and impurity content of sea sand in shallow sea areas, explore marine minerals, and use artificial intelligence algorithms to screen possible alternative raw materials or additives.

[0037] Example 2. Based on Example 1, a smart industrial pyrolysis system, as Figure 1 and Figure 2As shown in the figure, the pretreatment component includes a storage bin 12, and a homogenizing dryer 4 for drying, crushing, and grinding is provided on the side of the storage bin 12. A robotic arm 3 for grasping raw materials is provided between the storage bin 12 and the homogenizing dryer 4. The discharge port of the homogenizing dryer 4 is connected to a belt conveyor 5, and the discharge port of the belt conveyor 5 is connected to a preheater 13. The discharge port of the preheater 13 is respectively communicated with the inlet of a pyrolysis furnace 6 and the inlet of a decomposition furnace 8. The setting of the homogenizing dryer 4 is to monitor the moisture content of the raw materials in real time. By establishing a moisture monitoring and closed-loop control system, the moisture monitoring data is fed back to the drying equipment control system, and the drying equipment parameters are automatically adjusted according to the target value of the moisture content set according to the characteristics of the raw materials, so as to achieve precise drying of the raw materials. And the homogenizing dryer 4 is used to crush and grind the raw materials, making the powder fineness of the raw materials higher, which is more conducive to the pyrolysis of the raw materials and effectively improves the quality of cement clinker. The crushing and grinding use a combination of selective crushing and laminating crushing. According to the characteristics of different materials, the parameters of the crusher crushing chamber type, rotation speed, and discharge port size are adjusted to achieve precise crushing of the materials and reduce the particle size distribution range of the products (generally, the powder is required to have a fineness of 80μm residue on sieve of 10%-15%, 20%-30%, or a fineness of 45μm residue on sieve of 10% - 20%). Whether to perform grinding is further selected in combination with the characteristics of the raw materials. By adjusting the parameters such as the mill rotation speed, filling rate, and grinding body grading of the grinding system, efficient grinding of the materials is achieved, the fineness and specific surface area of the products are reduced, and the activity and reaction speed of the products are improved. Equipment such as cone crushers and impact crushers can be used in combination with intelligent control technology to achieve control of the particle size distribution after crushing by adjusting the equipment parameters, and multi-layer screening technology can be used to classify the raw materials according to different particle size levels. By real-time monitoring and intelligent adjustment of the operating parameters of the equipment, the operating efficiency and product quality of the equipment are improved. It can process raw materials of various materials more efficiently and achieve the best results.

[0038] The setting of the robotic arm 3 is to grasp raw materials. The preheater 13 adopts a multi-stage cyclone preheater, enabling the raw meal to conduct efficient heat exchange with high-temperature waste gas in different temperature ranges, gradually increasing the temperature of the raw meal to a state close to the starting temperature of pyrolysis, thereby significantly reducing the energy consumption during the pyrolysis process, realizing the cascaded utilization of energy, reducing the heat input required for the raw meal to enter the pyrolysis stage, and further reducing fuel consumption.

[0039] Example 3, based on Example 2, a smart industrial pyrolysis system, such as Figure 1As shown, the storage bin 12 is provided with a first feed port and a second feed port for automobile transportation, and the first feed port is connected to a feed conveying unit. That is, the storage bin 12 is provided with a first feed port and a second feed port, the first feed port is provided for conveying powdery and granular raw materials, and the second feed port is provided for conveying raw materials with poor fluidity, that is, block raw materials, thereby realizing the conveyance of multiple raw materials into the storage bin 12 and increasing the types of raw materials that can be input.

[0040] Example 4, based on Example 3, a smart industrial pyrolysis system, such as Figure 1 As shown, the feeding and conveying unit includes a storage structure 10, the discharge port of the storage structure 10 is connected to a screw conveyor 11, the screw conveyor 11 is connected to the first feed port of the storage bin 12, and the storage structure 10 is provided with a first feed bin door for inputting raw materials. Flow sensors are installed at the feed port and the discharge port of the screw conveyor 11 to monitor the flow change of the material in real time, and a material level sensor is installed in the storage bin 12 to grasp the storage amount of the material in real time. By transmitting the data collected by the sensor to the central control system, the operator can remotely monitor the industrial system and obtain the operating status and material parameters of the feeding device in real time. The screw conveyor 11 uses its rotating spiral blades to push the material along the material trough, and accurately controls the feeding amount of the material by adjusting the speed of the spiral. It is suitable for conveying powdery, granular and other materials with good fluidity. In the cement batching process, the feeder with a spiral structure can accurately convey various raw materials to the mixer according to the preset formula to ensure the stability of the quality of the cement product. Plate feeder has strong carrying capacity and is suitable for conveying large, heavy and abrasive materials. Although the conveying speed is relatively slow, it can withstand a large material load and has good wear resistance.

[0041] Example 5, based on Example 4, a smart industrial pyrolysis system, such as Figure 1 As shown, the storage structure 10 is provided with a second feed bin door for inputting raw materials, the second feed bin door is connected to a raw material analyzer 2, the inlet of the raw material analyzer 2 is connected to a screening and impurity removal equipment group 1, and the screening and impurity removal equipment group 1 is provided with a feed port for inputting raw materials. The raw material characteristic analyzer 2 uses analysis techniques such as X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD), scanning electron microscope (SEM) to analyze the chemical composition, mineral composition, microstructure, etc. of various raw materials and establish a raw material characteristic database, and uses a mathematical model to calculate the raw material ratio.

[0042] Among them, the screening and impurity removal equipment group 1 is a equipment group formed by combining multiple impurity removal equipment such as vibrating screens, electromagnetic, permanent magnet separators, gravity separation, and magnetic separation. By controlling the amplitude, frequency, and screen aperture of the vibrating screen, the magnetic field strength and energization time of the electromagnetic separator, and the magnetic field strength of the permanent magnet separator, the raw materials are impurity-removed multiple times to remove impurities such as soil, sand, iron blocks, and wood chips in the raw materials, improving the purity and quality of the raw materials. The part of the powdery and granular raw materials that needs to be screened and impurity-removed first passes through the screening and impurity removal equipment group 1, then passes through the raw material analyzer 2, and finally enters the storage structure 10; while the part of the powdery and granular raw materials that does not need to be screened and impurity-removed directly enters the storage structure 10.

[0043] Example 6. On the basis of any one of Examples 2 to 5, a smart industrial pyrolysis system, as Figure 1 shown, the pyrolysis furnace 6 is provided with an in-furnace intelligent monitoring sensor 7, and the in-furnace intelligent monitoring sensor 7 is connected to an external processor. The in-furnace intelligent monitoring sensor 7 applies intelligent technology. By integrating advanced technologies such as artificial intelligence, big data analysis by the external processor, Internet of Things integration, and digital twin, the traditional high-energy-consuming and high-emission production mode is gradually turning towards intelligence and low-carbon. The Internet of Things technology deploys sensors for temperature, pressure, gas composition, and material flow rate to collect the operation data of key equipment such as the rotary kiln 9 and the decomposition furnace 8 in real time, and combines edge computing nodes to perform local preprocessing on high-frequency data to ensure low-latency transmission to the cloud platform, providing a high-precision data basis for subsequent analysis. On this basis, the big data analysis technology can use a time-series database to store information in order to identify the optimal operating conditions and establish a prediction model for energy consumption and emissions. The digital twin technology builds a 3D physical model of the pyrolysis link, integrates real-time data and fluid mechanics simulation, simulates the energy consumption and emission effects of different production strategies, warns of equipment failures in advance, and optimizes the maintenance plan.

[0044] Example 7. On the basis of Example 6, a smart industrial pyrolysis system, as Figure 1As shown, the combustible gas fuel outlet of the pyrolysis furnace 6 is connected to the decomposition furnace 8. An outlet channel 18 for flue gas and slag to enter is provided on the pyrolysis furnace 6. The outlet channel 18 is connected to a slag collection unit 15. The outlet of the slag collection unit 15 is connected to a waste collection bin 16. The gas outlet of the slag collection unit 15 is connected to a dust collector 14. The outlet of the dust collector 14 is connected to the outlet channel 18, and the gas outlet of the dust collector 14 communicates with the outside. That is, the combustible gas fuel generated by the pyrolysis of the pyrolysis furnace 6 is transported along the combustible gas fuel outlet to the decomposition furnace 8. The flue gas and slag generated by the pyrolysis of the pyrolysis furnace 6 enter the slag collection unit 15 along the outlet channel 18. The slag is collected by the slag collection unit 15. The flue gas enters the dust collector 14 through the gas outlet of the slag collection unit 15. After being dust-removed by the dust collector 14, the flue gas is discharged to the outside. The dust filtered and collected by the dust collector 14 re-enters the outlet channel 18 and enters the slag collection unit 15. The dust and slag are input into the waste collection bin 16 by the slag collection unit 15. The dust and slag input into the waste collection bin 16 can be transported away by a garbage truck.

[0045] Example 8. On the basis of Example 7, an intelligent industrial pyrolysis system, as Figure 1 shown, the heat dissipation port of the grate cooler 17 is communicated with the homogenization and drying instrument 4. Part of the heat dissipated by the grate cooler 17 is transferred to the homogenization and drying instrument 4 through a pipeline, which greatly ensures the recovery and reuse of part of the heat dissipated by the grate cooler 17 and improves the energy utilization rate of the pyrolysis system of the present application.

[0046] Example 9. On the basis of Example 8, an intelligent industrial pyrolysis system, as Figure 1 shown, an infrared moisture meter and a microwave moisture meter for real-time monitoring of the moisture content of the raw material are provided in the homogenization and drying instrument 4. The homogenization and drying instrument 4 uses the infrared moisture meter and the microwave moisture meter to real-time monitor the moisture content of the raw material. By establishing a moisture monitoring and closed-loop control system, the moisture monitoring data is fed back to the drying equipment control system, and the drying equipment parameters are automatically adjusted according to the target value of the moisture content set according to the characteristics of the raw material, so as to achieve precise drying of the raw material.

[0047] When Example 9 is implemented, the part of the powdery and granular raw materials that need to be screened and impurities removed first passes through the screening and impurity removal equipment group 1, then passes through the raw material analyzer 2, and finally enters the storage structure 10; while the part of the powdery and granular raw materials that do not need to be screened and impurities removed directly enters the storage structure 10, and the storage structure 10 inputs the raw materials into the storage bin 12, and the powdery and granular raw materials are input from the first feed port on the storage bin 12, and the raw materials with poor fluidity, that is, block raw materials, are input from the second feed port on the storage bin 12; then the raw materials in the storage bin 12 are grabbed by the robot arm 3, and the robot arm 3 grabs the raw materials into the homogenizing and drying instrument 4 for homogenization and drying. The instrument 4 dries, crushes and grinds the raw materials. The dried, crushed and ground raw materials reach the belt conveyor 5 along the discharge port of the homogenizing dryer 4 and are input into the preheater 13 by the belt conveyor 5. The preheater 13 preheats the dried, crushed and ground raw materials. Among the preheated raw materials, the preheated fuel enters the pyrolysis furnace 6. The combustible gas fuel generated by the pyrolysis of the pyrolysis furnace 6 and the preheated cement raw materials enter the decomposition furnace 8. The decomposition furnace 8 makes the raw material and the fuel highly dispersed and evenly mixed. Then the raw material and the fuel enter the rotary kiln 9 for full combustion to form cement clinker. The cement clinker enters the grate cooler 17 for cooling.

[0048] Embodiment 10, based on any one of Embodiments 1 to 9, a smart industrial pyrolysis method comprises: First: storage. The storage bin 12 is provided with a first feed port and a second feed port. The powdery and granular raw materials are transported along the first feed port using a storage structure 10 and a screw conveyor 11, and the raw materials with poor fluidity are transported along the second feed port by a car. The screening and impurity removal equipment group 1 is an impurity removal equipment that combines gravity separation and magnetic separation. After the raw material storage area is quickly locked by a drone, the raw materials are input into the storage bin 12 by car or manually, wherein the powdery and granular raw materials are transported into the storage bin 12 along the first feed port using a storage structure 10 and a screw conveyor 11, and the block raw materials with poor fluidity are transported into the storage bin 12 along the second feed port by a car.

[0049] Second: pretreatment, the raw materials in the storage bin 12 are grabbed by the robot arm 3 and enter the homogenizer dryer 4, the homogenizer dryer 4 dries, crushes and grinds the raw materials, and the processed raw materials enter the preheater 13 through the belt conveyor 5, and the preheater 13 preheats the raw materials; that is, the robot arm 3 is used to grab the raw materials in the storage bin 12, and the robot arm 3 grabs the raw materials into the homogenizer dryer 4.

[0050] Third: Pyrolysis. The preheated fuel enters the pyrolysis furnace 6. The preheated cement raw materials and the combustible gas fuel decomposed from the pyrolysis furnace 6 enter the decomposition furnace 8, and the decomposition furnace 8 uses the combustible gas fuel to uniformly mix the cement raw materials. The uniformly mixed combustible gas fuel and cement raw materials enter the rotary kiln 9 for full combustion to form cement clinker. After the rotary kiln 9 conducts full combustion to form cement clinker, the cement clinker enters the grate cooler 17 for cooling.

[0051] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent industrial pyrolysis system, comprising a pyrolysis furnace (6), a decomposition furnace (8), a rotary kiln (9) and a grate cooler (17) connected in sequence, characterized in that, The pyrolysis system is provided with a raw material pretreatment component that enables the fuel to burn more fully and heats the raw material more evenly. The outlet of the raw material pretreatment component is respectively connected to the inlet of the pyrolysis furnace (6) and the inlet of the decomposition furnace (8).

2. The intelligent industrial pyrolysis system according to claim 1, characterized in that: The raw material pretreatment component includes a storage bin (12). A homogenizing dryer (4) for drying, crushing, and grinding is provided on the side of the storage bin (12). A robotic arm (3) for grasping raw materials is provided between the storage bin (12) and the homogenizing dryer (4). The outlet of the homogenizing dryer (4) is connected to a belt conveyor (5). The outlet of the belt conveyor (5) is connected to a preheater (13). The outlet of the preheater (13) is respectively connected to the inlet of the pyrolysis furnace (6) and the inlet of the decomposition furnace (8).

3. The intelligent industrial pyrolysis system according to claim 2, characterized in that: The storage bin (12) is provided with a first feed inlet and a second feed inlet for truck transportation. The first feed inlet is connected to a feed conveying unit.

4. The intelligent industrial pyrolysis system according to claim 3, wherein: The feed conveying unit includes a storage structure (10). The outlet of the storage structure (10) is connected to a screw conveyor (11). The screw conveyor (11) is connected to the first feed inlet of the storage bin (12). A first feed bin door for inputting raw materials is provided on the storage structure (10).

5. The intelligent industrial pyrolysis system according to claim 4, wherein: A second feed bin door for inputting raw materials is provided on the storage structure (10). The second feed bin door is connected to a raw material analyzer (2). The inlet of the raw material analyzer (2) is connected to a screening and impurity removal equipment group (1). The screening and impurity removal equipment group (1) is provided with a feed inlet for inputting raw materials.

6. The intelligent industrial pyrolysis system according to any one of claims 2 to 5, characterized in that: The pyrolysis furnace (6) is provided with an in-furnace intelligent monitoring sensor (7). The in-furnace intelligent monitoring sensor (7) is connected to an external processor.

7. The intelligent industrial pyrolysis system according to claim 6, characterized in that: The combustible gas fuel outlet of the pyrolysis furnace (6) is connected to the decomposition furnace (8). The pyrolysis furnace (6) is provided with a discharge channel (18) for flue gas and slag to enter. The discharge channel (18) is connected to a slag collection unit (15). The outlet of the slag collection unit (15) is connected to a waste collection bin (16). The gas outlet of the slag collection unit (15) is connected to a dust collector (14). The outlet of the dust collector (14) is connected to the discharge channel (18). The gas outlet of the dust collector (14) communicates with the outside.

8. The intelligent industrial pyrolysis system according to claim 7, wherein: The heat dissipation port of the grate cooler (17) is connected to the homogenizing dryer (4).

9. The intelligent industrial pyrolysis system according to claim 8, wherein: The homogenizing dryer (4) is provided with an infrared moisture meter and a microwave moisture meter for real-time monitoring of the moisture content of the raw materials.

10. A method for the intelligent industrial pyrolysis system according to any one of claims 1 to 9, comprising: First: Storage. The storage bin (12) is provided with a first feed inlet and a second feed inlet. The powdery and granular raw materials are conveyed along the first feed inlet by using the storage structure (10) and the screw conveyor (11). The raw materials with poor fluidity are transported by truck along the second feed inlet. The screening and impurity removal equipment group (1) is an impurity removal equipment that combines gravity separation and magnetic separation. Second: Pretreatment. The raw materials in the storage bin (12) are grabbed by the robotic arm (3) and enter the homogenization dryer (4). The homogenization dryer (4) dries, crushes, and grinds the raw materials. The processed raw materials enter the preheater (13) through the belt conveyor (5), and the preheater (13) preheats the raw materials. Third: Pyrolysis. The preheated fuel enters the pyrolysis furnace (6). The preheated cement raw materials and the combustible gas fuel decomposed from the pyrolysis furnace (6) enter the decomposition furnace (8). The decomposition furnace (8) uses the combustible gas fuel to uniformly mix the cement raw materials. The uniformly mixed combustible gas fuel and cement raw materials enter the rotary kiln (9) for full combustion to form cement clinker.

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