Temperature control system and method based on heat production from oxidation of semi-coke from pyrolysis of oil-rich coal

Abstract

The application discloses a temperature control system and method based on oil-rich coal pyrolysis semi-coke oxidation spontaneous heating, and relates to the technical field of coal mining, energy conversion and utilization. In the supercritical carbon dioxide regulation module, supercritical carbon dioxide is stored and regulated; in the injection module, supercritical carbon dioxide is injected into an underground reservoir; in the heat transfer network module, heat is transferred to a combustion zone through supercritical carbon dioxide to make the pyrolysis semi-coke oxidize and spontaneously ignite, and then the heat is transferred to a pyrolysis zone, injection parameters and combustion conditions are adjusted according to a heat balance comprehensive formula to make the pyrolysis zone be at an optimal pyrolysis temperature; in the detection module, heat transfer network data are detected and analyzed and feedback is given; in the monitoring center module, real-time data and abnormal detection are monitored and analyzed, dynamic regulation instructions are generated to adjust the mining strategy; in the mining module, pyrolysis products are extracted and transported, and in the pyrolysis product separation and recovery module, carbon dioxide is separated and treated and stored into a supercritical carbon dioxide storage tank. The application can improve the pyrolysis regulation accuracy of oil-rich coal.

Description

Technical Field

[0001] This application relates to the fields of coal mining, energy conversion and utilization technology, and relates to, but is not limited to, temperature control systems and methods based on the heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal. Background Technology

[0002] Oil-rich coal is an important energy resource, but it remains underground and is not fully utilized. Traditional oil-rich coal mining methods have problems such as environmental pollution and resource waste. Therefore, it is very important to study the safe and efficient mining and low-carbon clean utilization of oil-rich coal.

[0003] In existing technologies, in-situ pyrolysis is a clean and efficient method for mining oil-rich coal. Specifically, it involves pyrolyzing oil-rich coal underground to convert it into combustible gases and liquid fuels, thus achieving clean and efficient utilization of the coal. However, due to the relatively low thermal conductivity of coal, long-term, large-scale underground coal seam heating using existing in-situ pyrolysis technologies often results in significant heat consumption, leading to low heat transfer efficiency. Therefore, improving heat transfer efficiency, reducing heat consumption, and increasing resource utilization are current technical challenges that need to be addressed.

[0004] Oil-rich coal undergoes pyrolysis to produce coal tar, coal pyrolysis gas, and clean, smokeless pyrolysis semi-coke. However, this semi-coke remains underground and is not fully utilized. Therefore, utilizing the semi-coke produced from in-situ underground pyrolysis of oil-rich coal to provide a heat source can reduce energy consumption and achieve efficient resource utilization, offering a new technological path for safe, efficient, low-carbon, and clean coal mining. However, in existing oil-rich coal mining operations, the spontaneous combustion of pyrolysis semi-coke is influenced by various factors such as oxygen concentration, gas flow rate, and heating rate. The process is difficult to quantify, making it hard to control and prone to runaway combustion.

[0005] Therefore, there is an urgent need for a method that can improve heat transfer efficiency and quantitatively regulate the pyrolysis process to control the temperature of the oxidation and spontaneous combustion heat generation process of oil-rich coal pyrolysis semi-coke. This would solve the problems in existing technologies where the oxidation and spontaneous combustion process of pyrolysis semi-coke is difficult to quantify, leading to uncontrolled combustion and other related issues. The goal is to achieve precise regulation of the pyrolysis process of oil-rich coal and provide a scientific basis for the low-carbon and safe development of oil-rich coal resources. Summary of the Invention

[0006] This application provides a temperature control system and method for heat generation based on the oxidation and spontaneous combustion of semi-coke from oil-rich coal pyrolysis.

[0007] The technical solution of this application embodiment is implemented as follows: In a first aspect, embodiments of this application provide a temperature control system based on the heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal. The system includes a supercritical carbon dioxide control module, an injection module, a heat transfer network module, a detection module, a monitoring center module, an extraction module, and a pyrolysis product separation and recovery module, wherein: The supercritical carbon dioxide control module stores supercritical carbon dioxide, adjusts its parameters, and transfers supercritical carbon dioxide when target parameters are reached. The injection module receives supercritical carbon dioxide at target parameters and injects it into the underground reservoir, feeding back the injection parameters and post-injection supercritical carbon dioxide parameters to the heat transfer network. The heat transfer network module establishes a heat transfer network between the combustion and pyrolysis zones. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone to promote the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion parameters of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula. The system employs several modules: a combustion condition module to maintain the pyrolysis zone temperature at the optimal pyrolysis temperature; a detection module to monitor heat transfer network data via injection wells, monitoring wells, and production wells, analyze heat distribution, and provide feedback to the monitoring center; a monitoring center module to monitor system operation data, analyze the data, detect anomalies, generate dynamic control commands, and adjust the mining strategy accordingly; a mining module to extract pyrolysis products and transport them to a pyrolysis product separation and recovery device; and a pyrolysis product separation and recovery module to receive pyrolysis products, extract and separate them, recover and process the separated carbon dioxide, and transport the processed carbon dioxide to a supercritical carbon dioxide storage tank.

[0008] The technical solution provided in this application, in the supercritical carbon dioxide control module, stores supercritical carbon dioxide in a supercritical carbon dioxide storage tank, adjusts the supercritical carbon dioxide parameters, and transfers supercritical carbon dioxide when the target parameters are reached, thereby improving the heat transfer efficiency of supercritical carbon dioxide and ensuring the stability of subsequent heat transfer. Furthermore, it performs automated control according to dynamic control instructions from the monitoring center, realizing intelligent and efficient system operation. Leak detection and emergency mechanisms enhance system safety. The injection module receives and injects supercritical carbon dioxide that has reached the target parameters into the underground reservoir, and the injection parameters and the injected supercritical carbon dioxide... Carbon parameters are fed back to the heat transfer network. Through insulation design, heating compensation, and dynamic pressure regulation, heat and pressure losses during injection are reduced, ensuring that supercritical carbon dioxide remains in a supercritical state. Adding appropriate additives to the supercritical carbon dioxide improves its permeability and distribution uniformity in the coal seam, providing a stable and controllable heat input for subsequent pyrolysis reactions. Within the heat transfer network module, a heat transfer network is established between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone to promote the oxidation and spontaneous combustion of pyrolytic semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolytic semi-coke are then transferred to the combustion zone. In the oil-rich coal pyrolysis zone, the injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula to maintain the pyrolysis zone temperature at the optimal pyrolysis temperature. This avoids excessively high or low temperatures, improves heat utilization efficiency, reduces dependence on external energy sources, and achieves precise control of the pyrolysis reaction temperature, thereby significantly improving pyrolysis efficiency and the quality of pyrolysis products. In the detection module, heat transfer network data is monitored through detection equipment in injection wells, monitoring wells, and production wells. The heat distribution is analyzed and fed back to the monitoring center, enabling comprehensive data monitoring. This provides a basis for system regulation, and timely detection and feedback of anomalies prevents system malfunction and improves system stability. Qualitative and Reliability: The monitoring center module monitors system operation data, analyzes the data, detects anomalies, generates dynamic control commands, and adjusts the mining strategy accordingly. This enables intelligent system control and real-time optimization, improving system safety and pyrolysis efficiency. Furthermore, by storing all data records from the control process in real time, it provides a basis for subsequent system optimization. The mining module extracts pyrolysis products and transports them to pyrolysis product separation and recovery equipment, ensuring efficient and safe transport. Through collaboration with the monitoring center, the mining strategy is dynamically adjusted to improve the resource recovery rate of pyrolysis products.The pyrolysis product separation and recovery module receives pyrolysis products, extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank. This achieves a closed-loop recycling of carbon dioxide generated from pyrolysis, significantly reducing greenhouse gas emissions, improving resource utilization efficiency, and meeting green and low-carbon requirements. Furthermore, the regeneration and utilization of supercritical carbon dioxide reduces the cost of pyrolysis reactions on oil-rich coal, enhancing both economic efficiency and environmental friendliness, thus contributing to sustainable environmental development.

[0009] Optionally, the supercritical carbon dioxide control module includes a supercritical carbon dioxide storage unit and a supercritical carbon dioxide parameter control unit, wherein: the supercritical carbon dioxide storage unit is used to compress carbon dioxide to a supercritical state through a compressor and store supercritical carbon dioxide through a high-pressure storage container; the supercritical carbon dioxide parameter control unit is used to adjust the supercritical carbon dioxide pressure, temperature and flow rate in real time through a control device according to the storage requirements and operating conditions of supercritical carbon dioxide, until the target parameters are reached.

[0010] Optionally, the heat transfer network module includes a combustion zone heat transfer unit, a pyrolysis zone combustion unit, and a pyrolysis zone temperature regulation unit, wherein: the combustion zone heat transfer unit is used to transfer heat to the combustion zone using supercritical carbon dioxide as a heat transfer medium, promoting the release of heat through the oxidation and spontaneous combustion of pyrolysis semi-coke, and transferring the heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke to the oil-rich coal pyrolysis zone; the pyrolysis zone combustion unit is used to maintain the oil-rich coal pyrolysis reaction by absorbing the heat transferred from the combustion zone, wherein the heat transferred from the combustion zone to the pyrolysis zone includes conductive heat, convective heat, and radiative heat; the pyrolysis zone temperature regulation unit is used to dynamically adjust the injection parameters and combustion conditions of supercritical carbon dioxide using a comprehensive heat balance formula, so that the temperature of the pyrolysis zone is stably maintained at the optimal pyrolysis temperature.

[0011] Optionally, the comprehensive heat balance formula is constructed by considering the heat released from the spontaneous combustion of pyrolysis semi-coke, the heat transferred by supercritical carbon dioxide, the heat required in the pyrolysis zone, and the total heat transfer loss. The comprehensive heat balance formula is expressed by the following equation: ; In the formula, This indicates the heat released during the spontaneous combustion of pyrolysis semi-coke. This indicates that supercritical carbon dioxide transfers heat. This indicates the amount of heat required for the pyrolysis zone; The total heat transfer loss is represented by the following formula: Heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke, heat transferred by supercritical carbon dioxide, heat required in the pyrolysis zone, and total heat transfer loss. ; In the formula, This indicates the combustion rate of pyrolysis semi-coke; This indicates the calorific value of pyrolysis semi-coke; This represents the mass flow rate of supercritical carbon dioxide. This indicates the specific heat capacity of supercritical carbon dioxide. This indicates the injection temperature of supercritical carbon dioxide; Indicates the supercritical carbon dioxide effluent temperature; Indicates the pyrolysis rate of oil-rich coal; This indicates the specific heat capacity of oil-rich coal; This represents the temperature change in the pyrolysis zone; This represents the heat of pyrolysis of oil-rich coal; This indicates heat loss due to heat conduction; This indicates heat loss due to convection. The formulas for calculating heat loss through radiation, conduction, convection, and radiation are as follows: ; In the formula, Indicates the thermal conductivity of the coal seam; This indicates the contact area between the combustion zone and the pyrolysis zone; Represents the temperature gradient; Indicates the convective heat transfer coefficient; Indicates the temperature of the combustion zone; Indicates the temperature of the pyrolysis zone; Indicates the emissivity of the coal seam surface; denoted as the Stefan-Boltzmann constant.

[0012] Optionally, the monitoring center module includes a real-time data monitoring unit, a dynamic control instruction generation module, a dynamic control instruction execution unit, and a real-time storage unit, wherein: the real-time data monitoring unit is used to monitor system operation data and preprocess the system operation data; the dynamic control instruction generation module is used to calculate whether the heat demand of the combustion zone and pyrolysis zone meets the target demand based on the preprocessed system operation data, detect whether there are any abnormal states, and generate dynamic control instructions based on the analysis results; the dynamic control instruction execution unit is used to adjust the operating parameters of each device according to the dynamic control instructions to adjust the mining strategy, and monitor in real time whether the expected target is achieved, and stop the control when the expected target is achieved; the real-time storage unit is used to store system operation data, dynamic control instruction execution records, abnormal state records, and real-time data analysis records.

[0013] Optionally, the mining module is specifically used for: extracting pyrolysis products through the mining well after the pyrolysis reaction is completed; transmitting the flow rate, composition, and real-time data of the pyrolysis products to the monitoring center; and transporting the pyrolysis products to the pyrolysis product separation and recovery equipment via pressure difference or pumping equipment.

[0014] Optionally, the pyrolysis product separation and recovery module is specifically used for: receiving pyrolysis products; separating different components in the gaseous pyrolysis products using a gas separation device; removing impurities from the liquid pyrolysis products; and extracting usable liquid fuel; efficiently capturing, pressurizing, and heating the separated carbon dioxide until it is in a state suitable for storage; and then transporting the processed carbon dioxide to a supercritical carbon dioxide storage tank.

[0015] Secondly, embodiments of this application provide a temperature control method for heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal. This method is applied to a temperature control system for heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal. The system includes a supercritical carbon dioxide regulation module, an injection module, a heat transfer network module, a detection module, a monitoring center module, a mining module, and a pyrolysis product separation and recovery module. The method includes: storing supercritical carbon dioxide; adjusting supercritical carbon dioxide parameters and transferring supercritical carbon dioxide when target parameters are reached; receiving and injecting supercritical carbon dioxide that has reached the target parameters into an underground reservoir; feeding back the injection parameters and the injected supercritical carbon dioxide parameters to the heat transfer network; establishing a heat transfer network between the combustion zone and the pyrolysis zone, with supercritical carbon dioxide acting as a heat transfer medium to transfer heat to the combustion zone, promoting the pyrolysis of semi-coke. The coke oxidation and spontaneous combustion process transfers heat from supercritical carbon dioxide and the heat released from the oxidation and spontaneous combustion of pyrolysis semi-coke to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula to maintain the pyrolysis zone temperature at the optimal pyrolysis temperature. Heat transfer network data is monitored through injection wells, monitoring wells, and production wells to analyze heat distribution and provide feedback to the monitoring center. System operation data is monitored, analyzed, and anomaly detection is performed to generate dynamic control commands and adjust the mining strategy accordingly. Pyrolysis products are extracted and transported to pyrolysis product separation and recovery equipment. Pyrolysis products are received, extracted, and separated; the separated carbon dioxide is recovered and processed, and then transported to a supercritical carbon dioxide storage tank.

[0016] Thirdly, embodiments of this application provide an electronic device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the program, it implements the steps in the above-described temperature control method based on the spontaneous combustion of semi-coke from oil-rich coal pyrolysis.

[0017] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps in the above-described temperature control method based on the spontaneous combustion heat generation from the oxidation of semi-coke in the pyrolysis of oil-rich coal.

[0018] The beneficial effects of the technical solutions provided in this application include at least the following: The temperature control system and method provided in this application, based on the heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal, utilizes a supercritical carbon dioxide control module. This module stores supercritical carbon dioxide in a storage tank, adjusts its parameters, and transfers it when target parameters are reached. This improves the heat transfer efficiency of supercritical carbon dioxide and ensures the stability of subsequent heat transfer. Furthermore, it performs automated control based on dynamic control commands from the monitoring center, achieving intelligent and efficient system operation. Leak detection and emergency mechanisms enhance system safety. Finally, an injection module receives and injects the supercritical carbon dioxide, having reached the target parameters, into the underground reservoir. The injected parameters and post-injection supercritical carbon dioxide parameters are fed back to the heat transfer network. Heat and pressure losses during injection are reduced through methods such as insulation design, heating compensation, and dynamic pressure regulation, ensuring the supercritical carbon dioxide remains in a supercritical state. Adding appropriate additives to the supercritical carbon dioxide improves its permeability and distribution uniformity in the coal seam, providing a stable and controllable heat input for subsequent pyrolysis reactions. Within the heat transfer network module, a heat transfer network is established between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone and promoting the oxidative auto-ignition of the pyrolytic semi-coke. This process transfers heat from the supercritical carbon dioxide to the pyrolytic semi-coke. The heat released by spontaneous combustion is transferred to the pyrolysis zone of oil-rich coal. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula to maintain the pyrolysis zone temperature at the optimal pyrolysis temperature, preventing excessively high or low temperatures, improving heat utilization efficiency, reducing dependence on external energy sources, and achieving precise control of the pyrolysis reaction temperature. This significantly improves pyrolysis efficiency and the quality of pyrolysis products. In the detection module, heat transfer network data is monitored through detection equipment in injection wells, monitoring wells, and production wells. The heat distribution is analyzed and fed back to the monitoring center, enabling comprehensive data monitoring and providing a basis for system regulation. Timely detection and feedback of abnormal conditions prevent system malfunction. To enhance system stability and reliability, the monitoring center module monitors system operation data, analyzes the data, detects anomalies, generates dynamic control commands, and adjusts the mining strategy accordingly. This enables intelligent system control and real-time optimization, improving system safety and pyrolysis efficiency. Furthermore, by storing all data records from the control process in real time, it provides a basis for subsequent system optimization. The mining module extracts pyrolysis products and transports them to pyrolysis product separation and recovery equipment, ensuring efficient and safe transport. Through collaboration with the monitoring center, the mining strategy is dynamically adjusted to improve the resource recovery rate of pyrolysis products.The pyrolysis product separation and recovery module receives pyrolysis products, extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank. This achieves a closed-loop recycling of carbon dioxide generated from pyrolysis, significantly reducing greenhouse gas emissions, improving resource utilization efficiency, and meeting green and low-carbon requirements. Furthermore, the regeneration and utilization of supercritical carbon dioxide reduces the cost of pyrolysis reactions on oil-rich coal, enhancing both economic efficiency and environmental friendliness, thus contributing to sustainable environmental development. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 A schematic diagram of a temperature control system based on the spontaneous combustion heat generation from the oxidation of semi-coke in the pyrolysis of oil-rich coal, provided in an embodiment of this application; Figure 2 A schematic diagram illustrating the specific operation of a temperature control system based on the spontaneous combustion heat generation from the oxidation of semi-coke in the pyrolysis of oil-rich coal, provided in an embodiment of this application. Figure 3 A flowchart of a temperature control method for heat generation based on the oxidation and spontaneous combustion of semi-coke from oil-rich coal pyrolysis, provided in an embodiment of this application; Figure 4 This is a schematic diagram of the hardware entity of an electronic device provided in an embodiment of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0022] It should be noted that the terms "first, second, and third" used in the embodiments of this application are merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first, second, and third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0023] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of this application pertain. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0024] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0025] In view of the current problems in the field of coal mining, energy conversion and utilization technology for temperature control of oil-rich coal pyrolysis, this application provides a temperature control system and method based on the heat generation from the oxidation of semi-coke in oil-rich coal pyrolysis.

[0026] The technical solution of this application is described below, starting with the system implementation of this application.

[0027] Please refer to Figure 1 It shows a schematic diagram of a temperature control system based on the spontaneous combustion heat generation of semi-coke from oil-rich coal pyrolysis, provided in an embodiment of this application. Figure 1As shown, the system includes a supercritical carbon dioxide control module 01, an injection module 02, a heat transfer network module 03, a detection module 04, a monitoring center module 05, a mining module 06, and a pyrolysis product separation and recovery module 07. The supercritical carbon dioxide control module 01 stores supercritical carbon dioxide, adjusts its parameters, and transfers it when target parameters are reached. The injection module 02 receives and injects supercritical carbon dioxide at target parameters into the underground reservoir, feeding back the injection parameters and the injected supercritical carbon dioxide parameters to the heat transfer network. The heat transfer network module 03 establishes a heat transfer network between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone to promote the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion parameters of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula. The system operates under specific conditions to maintain the temperature of the pyrolysis zone at the optimal pyrolysis temperature. Module 04 detects heat transfer network data using detection equipment from the injection well, monitoring well, and production well, analyzes the heat distribution, and provides feedback to the monitoring center. Module 05 monitors system operation data, analyzes the data, detects anomalies, generates dynamic control commands, and adjusts the mining strategy accordingly. Module 06 extracts pyrolysis products and transports them to pyrolysis product separation and recovery equipment. Module 07 receives pyrolysis products, extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank.

[0028] In this embodiment, the supercritical carbon dioxide control module 01 includes a supercritical carbon dioxide storage unit and a supercritical carbon dioxide parameter control unit. The supercritical carbon dioxide storage unit compresses carbon dioxide to a supercritical state using a compressor and stores the supercritical carbon dioxide in a high-pressure storage container. Specifically, the critical pressure of supercritical carbon dioxide is 7.38 MPa, and the critical temperature is 31.1 degrees Celsius. Supercritical carbon dioxide is obtained by compressing it to a supercritical state using a compressor. Maintaining the supercritical carbon dioxide above its critical pressure and temperature ensures optimal heat transfer performance. The high-pressure storage container, as the main storage unit for supercritical carbon dioxide, uses corrosion-resistant and high-pressure-resistant steel or alloys, ensuring safety and durability, and is capable of withstanding high pressure and maintaining the supercritical state of the carbon dioxide. In addition, the safety valve automatically releases excess pressure to prevent problems such as container explosions caused by excessive pressure, ensuring the safety of supercritical carbon dioxide storage. Temperature monitoring instruments monitor the temperature inside the high-pressure storage container in real time to ensure that the internal temperature of the high-pressure storage container is within a safe range. Pressure monitoring instruments monitor the internal pressure of the high-pressure storage container to ensure that the internal pressure of the high-pressure storage container is always in a preset supercritical state. Thermal insulation materials prevent heat loss of supercritical carbon dioxide, maintain the stability of supercritical carbon dioxide, and improve storage efficiency. Supercritical carbon dioxide is transported through pipelines to ensure that no leakage occurs during the transportation process.

[0029] In the embodiments of this application, during the storage of supercritical carbon dioxide, each supercritical carbon dioxide storage device is regularly inspected and maintained to ensure that the device is free from cracks, corrosion or other potential faults, and leak detection equipment is installed to provide timely alarms in the event of a leak. Furthermore, corresponding emergency plans are formulated to deal with possible leaks or other unexpected situations, ensuring efficient and accurate response when unexpected situations occur and reducing losses caused by unexpected situations.

[0030] In this embodiment, the supercritical carbon dioxide parameter control unit is used to adjust the pressure, temperature, and flow rate of supercritical carbon dioxide in real time according to the storage requirements and operating conditions of the supercritical carbon dioxide through a control device. Specifically, the supercritical carbon dioxide control device includes a pressure regulator, a temperature sensor, a flow meter, a heater, a pump, and a computer control system. The pressure regulator controls and maintains the pressure of the supercritical carbon dioxide, the temperature sensor monitors the temperature of the supercritical carbon dioxide in real time, the flow meter measures and adjusts the flow rate of the supercritical carbon dioxide flowing through the system, the heater adjusts the temperature of the supercritical carbon dioxide, and the pump adjusts the flow rate and pressure of the supercritical carbon dioxide. The computer control system integrates monitoring and control functions and can automatically adjust parameters based on real-time feedback data.

[0031] Furthermore, based on the storage requirements and operating conditions of supercritical carbon dioxide, the pressure, temperature, and flow rate of supercritical carbon dioxide are adjusted in real time using supercritical carbon dioxide control equipment until the target parameters are achieved. Specifically, the adjustment of supercritical carbon dioxide pressure is determined by the storage requirements and system design parameters to maintain it in a supercritical state (i.e., pressure above 7.38 MPa). A pressure regulator and pump are used to hydraulically regulate the supercritical carbon dioxide pressure to achieve the target pressure requirement. If the pressure is insufficient, the flow rate is increased by the pump to increase the pressure; if the pressure is too high, the excess pressure is released through a safety valve to reduce the pressure. The adjustment of supercritical carbon dioxide temperature is determined based on the operating conditions to maintain it in a supercritical state (i.e., temperature at or above 31.1 degrees Celsius). The supercritical carbon dioxide is heated by a heater to achieve the target temperature requirement. The heater output is automatically monitored by the temperature control system and adjusted according to the set range. The adjustment of supercritical carbon dioxide flow rate is determined according to system requirements and dynamic control commands to ensure that the supercritical carbon dioxide flow rate is maintained within the design flow rate range, thereby ensuring the effective operation and stability of the system. The supercritical carbon dioxide flow rate is monitored by a flow meter, and the flow rate is increased or decreased by adjusting the pump speed or valve opening. Fine flow rate adjustment can be achieved by using a variable frequency pump.

[0032] Furthermore, after the supercritical carbon dioxide pressure, temperature, and flow rate are regulated, the supercritical carbon dioxide control module 01 will transfer the supercritical carbon dioxide adjusted to the target parameters to the injection module 02 to ensure that the injection module 02 can obtain a stable supercritical state, providing the required fluid conditions for the injection module 02, so that it can effectively inject supercritical carbon dioxide into the oil-rich coal seam and achieve the highest efficiency of oil-rich coal seam pyrolysis.

[0033] In this embodiment, the injection module 02 is used to receive and inject supercritical carbon dioxide that has reached the target parameters into the underground reservoir, and to feed back the injection parameters and the injected supercritical carbon dioxide parameters to the heat transfer network. Specifically, supercritical carbon dioxide that has reached the target parameters is received and injected into the oil-rich coal seam through the injection well. During the injection process, supercritical carbon dioxide experiences certain heat loss, pressure changes, and fluid property changes. Due to the complexity and uncertainty of the calculation process, the heat loss of supercritical carbon dioxide during its transport in the injection well is not calculated. Instead, corresponding measures are taken to minimize the losses caused by the heat loss, pressure changes, and fluid property changes of supercritical carbon dioxide.

[0034] In specific embodiments, to address the heat loss problem encountered during supercritical carbon dioxide injection, insulating materials are used in the injection well design to reduce heat exchange between supercritical carbon dioxide and the surrounding environment, thereby maintaining its temperature. Secondly, heating equipment such as electric heating belts and heat exchangers are installed to continuously replenish heat during injection, ensuring that the temperature of supercritical carbon dioxide remains within the supercritical range. Additionally, by controlling the injection flow rate, supercritical carbon dioxide is rapidly injected into the oil-rich coal seam, reducing the contact time between supercritical carbon dioxide and the wellbore, thus minimizing heat loss. To address pressure variation, a dynamic pressure monitoring and regulation system is established, utilizing a real-time pressure sensor network to monitor pressure changes during injection and adjust the injection flow rate and distribution in a timely manner to maintain pressure within the supercritical range. Simultaneously, pressure stabilization equipment is used to maintain stable injection pressure, avoiding sudden pressure changes due to flow resistance. Furthermore, a gradual injection strategy is adopted, progressively increasing the injection pressure during supercritical carbon dioxide injection to reduce impact on the formation, maintain system stability, and effectively control pressure variations. To address the issue of fluid property changes, parameters such as density and viscosity of supercritical carbon dioxide are monitored in real time to allow for timely adjustments to injection parameters and ensure superior flow performance. Secondly, appropriate amounts of surfactants and other additives are added to the supercritical carbon dioxide to improve its flowability and permeability, reduce viscosity, and thus enhance its flow capacity within the coal seam. Finally, a suitable injection mode is designed in advance to ensure that supercritical carbon dioxide can effectively penetrate and uniformly distribute within the oil-rich coal seam, thereby improving the pyrolysis efficiency of the pyrolytic semi-coke. The technical solution provided in this application addresses the heat loss, pressure changes, and fluid property changes that occur during supercritical carbon dioxide injection by implementing corresponding measures to minimize these changes, thereby ensuring the stability and high efficiency of supercritical carbon dioxide.

[0035] Furthermore, after the injection module 02 injects the supercritical carbon dioxide delivered by the supercritical carbon dioxide control module 01 into the underground reservoir, the temperature, pressure, and flow rate of the injected supercritical carbon dioxide will be further transmitted to the heat transfer network module 03, and the injection speed and injection pressure will be fed back to the heat transfer network module 03 in real time to optimize the heat distribution and utilization in the heat transfer network and maximize the heat transfer efficiency in the oil-rich coal seam.

[0036] In this embodiment, the heat transfer network module 03 includes a combustion zone heat transfer unit, a pyrolysis zone combustion unit, and a pyrolysis zone temperature regulation unit. The combustion zone heat transfer unit is used to transfer heat to the combustion zone using supercritical carbon dioxide as a heat transfer medium, promoting the release of heat through the oxidation and spontaneous combustion of pyrolysis semi-coke, and transferring the heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke to the oil-rich coal pyrolysis zone. The pyrolysis zone combustion unit is used to maintain the oil-rich coal pyrolysis reaction by absorbing the heat transferred by the combustion zone. The heat transferred from the combustion zone to the pyrolysis zone includes conductive heat, convective heat, and radiative heat.

[0037] In a specific embodiment, in the combustion zone, the pyrolytic semi-coke releases heat during the oxidation and spontaneous combustion process. The supercritical carbon dioxide transfers heat and the heat released by the oxidation and spontaneous combustion of the pyrolytic semi-coke is transferred to the oil-rich coal pyrolysis zone, providing the heat required for the pyrolysis zone. In the pyrolysis zone, the oil-rich coal absorbs heat and the pyrolysis reaction occurs and is maintained within the optimal pyrolysis temperature range of 350 degrees Celsius to 550 degrees Celsius, generating pyrolysis products such as oil, gas and semi-coke. During the heat transfer from the combustion zone to the pyrolysis zone, the heat transfer mechanisms mainly include conduction, convection, and radiation. Conduction is described by Fourier's law as the transfer of heat in the coal seam; convection is forced convection heat transfer caused by supercritical carbon dioxide flow; and radiation is the radiative heat loss in the high-temperature combustion zone. Therefore, the heat transferred from the combustion zone to the pyrolysis zone mainly includes conductive heat, convective heat, and radiative heat. Correspondingly, during the heat transfer process from the combustion zone to the pyrolysis zone, there are heat losses due to conduction, convection, and radiation. The formulas for calculating these heat losses are expressed as follows: ; In the formula, This indicates heat loss due to heat conduction; This indicates heat loss due to convection. This indicates heat loss due to radiation; Indicates the thermal conductivity of the coal seam; This indicates the contact area between the combustion zone and the pyrolysis zone; Represents the temperature gradient; Indicates the convective heat transfer coefficient; Indicates the temperature of the combustion zone; Indicates the temperature of the pyrolysis zone; Indicates the emissivity of the coal seam surface; denoted as the Stefan-Boltzmann constant.

[0038] In the embodiments of this application, during the heat transfer process of supercritical carbon dioxide, its state parameters such as temperature, pressure, density, and specific heat capacity often undergo certain changes, which are particularly pronounced in high-temperature gradient environments such as the combustion and pyrolysis zones. However, although these minor changes in state affect the heat transfer capacity of supercritical carbon dioxide, based on its physical properties, it can still efficiently perform heat carrying and heat regulation, thereby completing the heat transfer process between the combustion and pyrolysis zones. Specifically, by dynamically absorbing or releasing heat through the high flow rate and high specific heat capacity of supercritical carbon dioxide, the temperature of the combustion and pyrolysis zones can be controlled by supercritical carbon dioxide during state changes. When the heat released from the combustion of semi-coke in the combustion zone is too high, supercritical carbon dioxide absorbs some heat from the combustion zone and releases heat in the pyrolysis zone; when the temperature in the pyrolysis zone is insufficient, the heat carried by supercritical carbon dioxide can directly supplement the insufficient heat or stabilize the pyrolysis reaction. In addition, in the combustion and pyrolysis zones, pressure fluctuations in the flow path are reduced by using throttle valves to avoid abrupt changes in supercritical carbon dioxide density, thereby achieving dynamic pressure control of supercritical carbon dioxide. A segmented injection design is configured to inject supercritical carbon dioxide at different initial temperatures into the combustion or pyrolysis zones to optimize the zoned temperature, which helps to stabilize the pyrolysis reaction of oil-rich coal.

[0039] In this embodiment, the calculation formulas for the heat transfer of supercritical carbon dioxide and the heat release from the spontaneous combustion of pyrolysis semi-coke in the combustion zone are expressed by the following formulas: ; In the formula, This indicates the heat released during the spontaneous combustion of pyrolysis semi-coke. This indicates that supercritical carbon dioxide transfers heat. The combustion rate of pyrolysis semi-coke can be described by the Arrhenius equation. , Represents the frequency factor. Indicates activation energy. Represents the gas constant. , Indicates the temperature of the combustion zone. Indicates oxygen concentration; This indicates the calorific value of pyrolysis semi-coke; This represents the mass flow rate of supercritical carbon dioxide. This indicates the specific heat capacity of supercritical carbon dioxide. This indicates the injection temperature of supercritical carbon dioxide; This indicates the temperature at which supercritical carbon dioxide exits.

[0040] In this embodiment, the oil-rich coal in the pyrolysis zone absorbs heat to maintain the optimal pyrolysis temperature. The formula for calculating the heat required in the pyrolysis zone is expressed as follows: ; In the formula, This indicates the amount of heat required for the pyrolysis zone; Indicates the pyrolysis rate of oil-rich coal; This indicates the specific heat capacity of oil-rich coal; This represents the temperature change in the pyrolysis zone; This represents the heat of pyrolysis of oil-rich coal. Furthermore, to maintain the temperature of the oil-rich coal pyrolysis reaction in the pyrolysis zone at the optimal pyrolysis temperature of 350°C to 550°C, the heat released in the combustion zone must meet the needs of the pyrolysis zone. This requires establishing a balance between the heat released from the spontaneous combustion of pyrolysis semi-coke, the heat transferred by supercritical carbon dioxide, the heat required by the pyrolysis zone, and the total heat transfer loss. The total heat transfer loss includes heat loss through conduction, convection, and radiation. This comprehensive heat balance formula is expressed as follows: ; In the formula, This represents the total heat loss due to heat transfer.

[0041] In this embodiment, the pyrolysis zone temperature control unit dynamically adjusts the injection parameters and combustion conditions of supercritical carbon dioxide using a comprehensive heat balance formula, ensuring the pyrolysis zone temperature remains stable at the optimal pyrolysis temperature. Specifically, the adjustment methods for supercritical carbon dioxide injection parameters mainly include increasing the injection temperature to enhance convective heat transfer, increasing the injection flow rate to improve the heat transfer efficiency between the combustion and pyrolysis zones, and adjusting the injection pressure to optimize the flow characteristics of supercritical carbon dioxide and ensure uniform heat transfer. The combustion conditions in the combustion zone are optimized by controlling the oxygen concentration and the combustion rate of the pyrolysis coke to stabilize the combustion zone temperature between 600°C and 800°C. The combustion conditions in the pyrolysis zone are optimized by adjusting the contact area and distance between the combustion and pyrolysis zones to ensure the pyrolysis zone temperature remains stable between 350°C and 550°C. Optionally, temperature sensors and pressure sensors are respectively arranged in the combustion zone (i.e., at the monitoring well) and the pyrolysis zone (i.e., at the production well) to monitor the temperature and pressure distribution in real time, thereby dynamically adjusting the supercritical carbon dioxide injection parameters and oxygen concentration based on the monitoring data.

[0042] The technical solution provided in this application establishes a heat transfer network between the combustion zone and the pyrolysis zone, accurately calculates the temperature distribution in the pyrolysis zone near the mining well, and dynamically adjusts the supercritical carbon dioxide injection parameters and combustion conditions through a comprehensive heat balance formula to ensure that the temperature in the pyrolysis zone remains stable at the optimal pyrolysis temperature of 350°C to 550°C, thereby improving the pyrolysis efficiency and resource utilization rate of oil-rich coal.

[0043] Furthermore, after receiving information on supercritical carbon dioxide temperature, pressure, flow rate, injection speed, and injection pressure from the injection module 02, the heat transfer network module 03 conducts and distributes heat within the underground reservoir. Simultaneously, it monitors temperature changes in different areas and promptly transmits the transferred heat data to the detection module 04, which in turn feeds it back to the monitoring center. This allows for the evaluation of the effectiveness and uniformity of heat transfer, ensuring the overall performance of the heat treatment process is improved and facilitating system control.

[0044] In this embodiment, the detection module 04 is used to detect heat transfer network data through the detection equipment of injection well, monitoring well and production well, analyze the heat distribution and feed it back to the monitoring center. Specifically, injection well monitoring equipment, monitoring well monitoring equipment, and production well monitoring equipment are deployed in injection wells, monitoring wells, and production wells. Each monitoring device has a different function. Since injection wells are primarily used to inject supercritical carbon dioxide into oil-rich coal seams, the main function of the injection well monitoring equipment is to monitor the state of supercritical carbon dioxide and its changes during the injection process. This equipment mainly includes temperature sensors, pressure sensors, flow meters, and heater monitoring equipment. Temperature sensors monitor the injection temperature of supercritical carbon dioxide in real time to ensure it remains in a supercritical state, preventing changes in the supercritical carbon dioxide state due to excessively low temperatures, which would affect heat transfer efficiency. Pressure sensors monitor the pressure of supercritical carbon dioxide within the injection well to ensure it remains in a supercritical state, preventing the loss of supercritical properties due to excessively low pressure and avoiding formation damage due to excessively high pressure. Flow meters measure the injection flow rate of supercritical carbon dioxide, ensuring it remains within a preset range. By controlling the flow rate, heat transfer efficiency is optimized, and heat loss is reduced. Heater monitoring equipment monitors the operating status of the heating equipment to ensure the supercritical carbon dioxide maintains a stable temperature during injection, compensating for potential heat loss and maintaining the heat transfer capacity of the supercritical carbon dioxide. The monitoring well, located between the combustion zone and the pyrolysis zone, is used to monitor the temperature and pressure distribution of the heat transfer network in real time to assess the heat transfer between the combustion and pyrolysis zones. The monitoring well's detection equipment includes temperature sensors, pressure sensors, oxygen concentration sensors, and heat flow sensors. The temperature sensors monitor the temperature distribution in the combustion and pyrolysis zones, particularly the semi-coke combustion temperature in the combustion zone, ensuring the combustion zone temperature is maintained within the range of 600°C to 800°C to prevent overheating or underheating from affecting pyrolysis efficiency. The pressure sensors monitor pressure changes in the combustion and pyrolysis zones to assess the flow state of supercritical carbon dioxide, ensuring uniform pressure distribution and preventing a decrease in heat transfer efficiency due to sudden pressure changes. The oxygen concentration sensors monitor the oxygen concentration in the combustion zone to control the semi-coke combustion rate, preventing excessive or insufficient oxygen from affecting heat release in the combustion zone. The heat flow sensors measure the heat flow rate transferred from the combustion zone to the pyrolysis zone to assess the efficiency of heat transfer through conduction, convection, and radiation, ensuring that the heat required by the pyrolysis zone is met.The production well is used to extract pyrolysis products, therefore, it is necessary to monitor the temperature and pressure of the pyrolysis zone in real time to ensure the stability of the pyrolysis reaction and the smooth delivery of the products. The production well monitoring equipment includes temperature sensors, pressure sensors, gas composition analyzers, and liquid flow meters. Temperature sensors monitor the temperature of the pyrolysis zone to ensure it remains stable within the range of 350°C to 550°C, thus achieving efficient pyrolysis of oil-rich coal. Pressure sensors monitor the pressure within the production well to ensure the smooth delivery of pyrolysis products, preventing excessive pressure from causing well wall rupture or excessively low pressure from affecting product recovery. Gas composition analyzers detect the gaseous components in the pyrolysis products, including carbon monoxide, carbon dioxide, methane, and hydrogen, to assess the quality and efficiency of the pyrolysis product. Liquid flow meters measure the flow rate of the pyrolysis product liquid to monitor the delivery efficiency of the liquid product and prevent blockages or leaks. The technical solution provided in this application embodiment achieves precise calculation and control of the heat transfer network through injection well detection equipment, monitoring well detection equipment and production well detection equipment, monitors parameters such as temperature, pressure and flow rate of supercritical carbon dioxide and pyrolysis semi-coke in real time, and transmits the data to the monitoring center to dynamically adjust the system operation.

[0045] In this embodiment, the detection module 04 mainly performs temperature detection, pressure detection, flow rate detection, gas composition detection, and heat flow detection. Specifically, temperature detection involves real-time monitoring of the temperature distribution in the supercritical carbon dioxide, combustion zone, and pyrolysis zone using temperature sensors arranged in the injection well, monitoring well, and production well, to evaluate the heat transfer efficiency of the heat transfer network. Pressure detection involves monitoring the pressure changes of supercritical carbon dioxide and the pressure distribution in the combustion and pyrolysis zones using pressure sensors arranged in the injection well, monitoring well, and production well, to evaluate the flow state and heat transfer effect of supercritical carbon dioxide using pressure data. Flow rate detection involves using a flow meter in the injection well to monitor the injection flow rate of supercritical carbon dioxide and a flow meter in the production well to monitor the transport flow rate of pyrolysis products. Gas composition detection involves using a gas composition analyzer in the production well to detect the gas composition of the pyrolysis products and an oxygen concentration sensor in the monitoring well to monitor the oxygen concentration in the combustion zone. Heat flow detection involves using a heat flow sensor in the monitoring well to measure the heat flow rate transferred from the combustion zone to the pyrolysis zone.

[0046] In a specific testing embodiment, temperature sensors, pressure sensors, flow sensors, and other testing equipment are installed and calibrated at the injection well, monitoring well, and production well to ensure normal communication with the monitoring center. The testing equipment is activated to collect temperature, pressure, and flow data in real time, and the data is transmitted to the monitoring center via wireless or wired network. After receiving the data, the monitoring center analyzes the temperature and pressure distribution of the heat transfer network and determines whether to adjust the supercritical carbon dioxide injection parameters or the oxygen concentration in the combustion zone based on the analysis results. When insufficient temperature is detected, the monitoring center instructs the heater to increase the supercritical carbon dioxide injection temperature; when excessively low pressure is detected, the monitoring center instructs the pump to increase the supercritical carbon dioxide injection pressure or flow rate; when excessively high combustion zone temperature is detected, the monitoring center instructs a reduction in oxygen concentration or an increase in the supercritical carbon dioxide flow rate for heat absorption. After adjustment, the data is stored and recorded in a database for subsequent analysis and optimization of the heat transfer network design.

[0047] The technical solution provided in this application embodiment achieves state monitoring of supercritical carbon dioxide and pyrolysis semi-coke by arranging detection equipment such as temperature sensors, pressure sensors, flow meters, and gas composition analyzers in the injection well, monitoring well, and production well, respectively. By collecting and analyzing data in real time, the monitoring center dynamically adjusts the injection parameters and combustion conditions to ensure the efficient operation of the heat transfer network and the stability of the pyrolysis zone temperature, ultimately achieving a significant improvement in the pyrolysis efficiency and resource utilization rate of oil-rich coal.

[0048] Furthermore, after acquiring data transmitted from the injection well, monitoring well, and production well, the detection module 04 monitors the temperature and pressure data fed back by the heat transfer network module 03 in real time to analyze the heat distribution and identify potential anomalies. It then promptly feeds this information back to the monitoring center module 05. By transmitting the information from the detection module 04, the monitoring center can assess the system status in real time, thereby optimizing resource allocation and risk management.

[0049] In this embodiment, the monitoring center module 05 includes a real-time data monitoring unit, a dynamic control instruction generation module, a dynamic control instruction execution unit, and a real-time storage unit. The real-time data monitoring unit monitors system operating data and preprocesses it. The dynamic control instruction generation module calculates whether the heat demand in the combustion zone and pyrolysis zone meets the target demand based on the preprocessed system operating data, detects any abnormal states, and generates dynamic control instructions based on the analysis results. Specifically, after receiving system operating data from the injection well, monitoring well, and production well, the real-time data monitoring unit performs noise reduction and abnormal data removal on the system operating data. Based on a comparison between the target demand in the combustion zone and pyrolysis zone and the current temperature state in the heat transfer network, it judges the operating status and effect, determines whether system regulation is needed, and generates dynamic control instructions based on the analysis results. These instructions include temperature dynamic control instructions, pressure dynamic control instructions, flow dynamic control instructions, and combustion efficiency dynamic control instructions, to ensure the heat transfer network operates efficiently.

[0050] In this embodiment, the dynamic control command execution unit is used to adjust the operating parameters of each device according to the dynamic control command to adjust the mining strategy, and monitor in real time whether the expected target is achieved. When the expected target is achieved, the control stops. Specifically, the dynamic control command is transmitted to the execution mechanism, which receives the dynamic control command and transmits it to the supercritical carbon dioxide control equipment, such as heaters, pumps, valves, oxygen injection equipment, etc., to adjust the specific operating parameters of each device according to the dynamic control command, thereby adjusting the system state. For example, the heating equipment of the injection well is adjusted to ensure that the temperature of the injected supercritical carbon dioxide meets both the supercritical conditions and the heat transfer requirements; the working state of the pump or the opening of the valve is adjusted to adjust the pressure of supercritical carbon dioxide entering the system; the oxygen injection flow rate of the oxygen control equipment is adjusted to control the combustion rate of the pyrolysis semi-coke in the combustion zone to avoid overheating or undercombustion; the flow rate adjustment equipment is adjusted to optimize the flow rate of supercritical carbon dioxide to ensure accurate heat distribution in the combustion zone and pyrolysis zone, ultimately achieving optimized adjustment of the mining strategy. During the adjustment process, the expected target is monitored in real time, and the control stops when the expected target is achieved. Optionally, a data communication network can be established to enable communication between the monitoring center, the actuators, and various control devices, ensuring the accuracy of data transmission. Furthermore, the data communication network supports fault detection and communication anomaly alarms, ensuring the secure transmission of data collected by each detection device and its real-time uploading to the monitoring center. It also transmits the dynamic control commands generated by the monitoring center to the actuators and various control devices in real time.

[0051] In this embodiment, the real-time storage unit is used to store system operation data, dynamic control command execution records, abnormal state records, real-time data analysis records, and alarm records triggered by abnormal states. The stored data facilitates subsequent system optimization and heat transfer network improvement.

[0052] In one specific embodiment, the built-in sensors of the standardized injection well, monitoring well, and production well are used to perform functional tests on the data communication network, ensuring smooth connection with the field acquisition and control equipment. The software and database of the monitoring center are initialized, and system parameter thresholds, such as target temperature requirements and target flow ranges, are input. The built-in sensors of the injection well, monitoring well, and production well are then activated. The injection well's built-in sensors collect real-time data on the injection temperature, pressure, and flow rate parameters of supercritical carbon dioxide. The monitoring well's built-in sensors collect real-time data on the temperature, pressure, oxygen concentration, and heat flow parameters of the combustion and pyrolysis zones. Sensors inside the well collect real-time data on the temperature, pressure, flow rate, and gas and liquid composition of the pyrolysis products. This data is transmitted to the monitoring center via a data communication network. The data collected by the monitoring center is preprocessed and stored in a database. Data analysis and calculations are then performed on the collected data, including heat demand assessment and state deviation analysis. Heat demand assessment primarily calculates whether the heat demands of the combustion and pyrolysis zones meet their target requirements. State deviation analysis primarily detects any abnormal states, such as insufficient temperature or excessively high temperature and pressure fluctuations causing supercritical carbon dioxide to lose its supercritical state. The system identifies several abnormal conditions, including insufficient flow leading to insufficient heat transfer, and abnormal oxygen concentration causing excessive or insufficient combustion. Further, it marks and uploads data on these abnormal conditions, generating dynamic control commands based on the analysis results. These commands include dynamic temperature control, pressure control, oxygen concentration adjustment, and flow control. The actuators adjust equipment parameters according to these commands, specifically adjusting heaters, pumps, valves, and oxygen injection volume. During the control process, the system monitors in real-time whether the expected target is achieved, stopping control when the target is reached. Specifically, when the supercritical carbon dioxide temperature is insufficient, a temperature control command is transmitted to the injection well heater to increase the temperature. When the pyrolysis zone temperature is too high, the supercritical carbon dioxide inflow is increased to absorb heat according to the temperature control command. When the pressure is too low, the pump or valve is adjusted to increase the pressure according to the pressure control command. When the pressure is too high, the discharge or diversion is increased according to the pressure control command to prevent equipment damage. The oxygen concentration adjustment command is executed by adjusting the oxygen supply in a timely manner based on the combustion zone temperature to control the combustion rate. During the process, all system operation data, dynamic control command execution records, abnormal condition records, alarm records, and real-time data analysis records are stored in a memory.

[0053] Furthermore, after receiving real-time data from each module, the monitoring center module 05 centrally processes the feedback data from the detection module 04 and monitors the system's operating status in real time. By analyzing key parameters such as temperature and pressure and quickly identifying potential problems, it generates dynamic control commands, promptly notifies the mining module, and feeds back to each control device to adjust the mining strategy. This information feedback mechanism can ensure effective response to various situations during the mining process, improve resource recovery rate, and reduce risks, thereby achieving efficient system operation.

[0054] In this embodiment, the mining module 06 is used to extract pyrolysis products and transport the pyrolysis products to a pyrolysis product separation and recovery device to improve the recovery efficiency of pyrolysis products, achieve environmental protection, and maintain the overall stability of the system. Specifically, the pyrolysis products generated in the pyrolysis reaction include liquid pyrolysis products such as coal tar, coal gas pyrolysis products, and pyrolysis semi-coke, and gaseous pyrolysis products such as carbon monoxide, carbon dioxide, methane, and hydrogen. The mining module 06 mainly includes a mining well, flow monitoring equipment, a gas composition analyzer, pressure monitoring equipment, and temperature monitoring equipment. The mining well is used to transport pyrolysis products in real time; the flow monitoring equipment is used to monitor the flow rate of pyrolysis products in real time to ensure transport efficiency, assess the product generation rate of the pyrolysis reaction, and detect abnormal flow rates caused by blockage or leakage of pyrolysis products, thus ensuring stable system operation; the gas composition analyzer is used to detect the gaseous components in the pyrolysis products, assess the efficiency of the pyrolysis reaction and the quality of the products, and provide data support for subsequent pyrolysis product separation and recovery equipment; the pressure monitoring equipment is used to monitor the pressure inside the mining well to ensure smooth transport of pyrolysis products, avoiding well wall rupture due to excessive pressure and affecting product recovery efficiency due to insufficient pressure; the temperature monitoring equipment is used to monitor the temperature of the pyrolysis products inside the mining well to ensure that the pyrolysis products maintain fluidity in a high-temperature environment and avoid abnormalities such as blockage.

[0055] In a specific operational embodiment, the depth, diameter, and materials of the mining well are designed according to the geological conditions of the coal seam and the distribution of the pyrolysis zone to ensure the sealing and high-temperature and high-pressure resistance of the well wall and prevent leakage of pyrolysis products. After the pyrolysis reaction is completed, the pyrolysis products are extracted through the mining well. Flow monitoring equipment, gas composition analyzer, pressure monitoring equipment, and temperature monitoring equipment are activated to collect real-time data on the flow rate of the pyrolysis products, the gas composition of the pyrolysis products, and the real-time pressure and temperature data in the mining well. The collected data is transmitted to the monitoring center module 05 for analysis and feedback. The monitoring center module 05 analyzes the data transmitted by the mining module 06 to determine the efficiency of the pyrolysis reaction and the quality of the products. When abnormal conditions are detected, such as insufficient flow, low pressure, or abnormal gas composition, the monitoring center module 05 generates dynamic control commands to adjust the parameters of each device. The pyrolysis products are transported to the pyrolysis product separation and recovery equipment through pressure difference or pumping equipment to ensure safety and efficiency during the transportation process and to avoid product loss or leakage.

[0056] The technical solution provided in this application embodiment involves the mining module 06 extracting pyrolysis products and then transmitting the flow rate, gas composition, and real-time pressure and temperature data of the pyrolysis products to the monitoring center module 05. The monitoring center module 05 generates dynamic control commands based on the data analysis results. The mining module 06 receives these commands from the monitoring center module 05 and adjusts the operating parameters of each device in conjunction with system operation data to dynamically adjust the mining strategy and ensure the effective operation of the pyrolysis process. Simultaneously, the mining module 06 transports the pyrolysis products to the pyrolysis product separation and recovery module 07 for efficient separation and recovery of gaseous and liquid pyrolysis products, thereby maximizing resource utilization. Furthermore, since the operating status of the mining module 06 affects the heat distribution of the heat transfer network, the mining module 06 needs to coordinate with the heat transfer network module 03. Through the rational design of the mining and transmission equipment within the mining module 06 and the collaborative work between the mining module 06, the monitoring center module 05, the heat transfer network module 03, and the pyrolysis product separation and recovery module 07, the safe and efficient extraction and transportation of pyrolysis products are ensured, while environmental pollution is avoided, achieving sustainable resource utilization.

[0057] In this embodiment, the pyrolysis product separation and recovery module 07 receives pyrolysis products and extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank. Specifically, after receiving the pyrolysis products transmitted by the mining module 06, the pyrolysis product separation and recovery equipment separates carbon monoxide, carbon dioxide, methane, hydrogen, etc., from the gaseous pyrolysis products using a gas separation device to ensure the purity and quality of the extracted gas. Liquid pyrolysis products are processed to remove impurities and extract usable liquid fuels, such as coal tar. The separated carbon dioxide is recovered and processed, including efficient capture processing, pressurization processing, and heating processing, until the carbon dioxide is in a suitable state for storage. The processed carbon dioxide is then transported to a supercritical carbon dioxide storage tank and maintained in a supercritical state for subsequent recycling. The supercritical carbon dioxide stored in the supercritical carbon dioxide storage tank is used as a heat transfer medium and re-injected into the oil-rich coal seam to participate in the oil-rich coal pyrolysis reaction process, forming a closed-loop pyrolysis cycle. This achieves a reduction in greenhouse gas emissions, efficient resource utilization, and sustainable environmental development.

[0058] The technical solution provided in this application embodiment involves a pyrolysis product separation and recovery module 07 that converts carbon dioxide generated in the pyrolysis reaction into supercritical carbon dioxide, which serves as a heat transfer medium in the pyrolysis process of oil-rich coal. By transferring heat through carbon dioxide in a supercritical state, the auto-ignition process of pyrolysis semi-coke is effectively controlled, thereby precisely regulating the pyrolysis reaction temperature of oil-rich coal and ensuring pyrolysis efficiency and the quality of pyrolysis products. The pyrolysis product separation and recovery module 07 also captures and converts carbon dioxide generated in the pyrolysis reaction to form supercritical carbon dioxide, which is then stored in a supercritical carbon dioxide storage tank for subsequent regulation, forming a closed-loop pyrolysis cycle. This improves resource utilization efficiency, reduces the environmental impact of carbon dioxide, meets low-carbon requirements, and is conducive to sustainable environmental development.

[0059] For specific embodiments, please refer to Figure 2The diagram illustrates the specific operation of the temperature control system based on the spontaneous combustion of semi-coke from the pyrolysis of oil-rich coal, as provided in this application embodiment. In the diagram, 1 represents the supercritical carbon dioxide control device, 2 represents the injection well, 3 represents the heat transfer network, 4 represents the detection device, 5 represents the monitoring center, 6 represents the control device, 7 represents the actuator, 8 represents the production well, and 9 represents the pyrolysis product separation and recovery device. The red arrow on the left side of the diagram represents the process of injecting supercritical carbon dioxide from the injection well 2 into the underground oil-rich coal seam. The red arrow in the middle represents the process of supercritical carbon dioxide transferring heat from the combustion zone to the pyrolysis zone in the heat transfer network 3. The red arrow on the right side represents the process of the gaseous and liquid products generated by the pyrolysis reaction moving upward from the production well 8 and being extracted. In actual operation, the pumps, heaters, and pressure regulators in the supercritical carbon dioxide control equipment precisely control the temperature, pressure, and flow rate of carbon dioxide, treating it to a supercritical state. The supercritical carbon dioxide, having reached the target parameters, is input into the injection well via a pipeline. Through the injection well, the supercritical carbon dioxide is injected into the oil-rich coal seam. During injection, insulation materials and heating compensation measures are used to reduce heat loss and maintain the supercritical state. After entering the heat transfer network, the supercritical carbon dioxide exchanges heat with the pyrolysis semi-coke in the combustion zone, promoting the oxidation and spontaneous combustion of the semi-coke and releasing heat. Simultaneously, the supercritical carbon dioxide, relying on its high specific heat capacity and strong convection capacity, transfers heat to the pyrolysis zone. The injection parameters of the supercritical carbon dioxide and the oxygen concentration are dynamically adjusted through an established heat balance formula, ensuring the temperature in the pyrolysis zone is stably maintained at the optimal pyrolysis temperature. Temperature control devices are deployed in the injection well, monitoring well, and production well. Sensors for temperature, pressure, flow rate, and gas composition are used to collect multiple data points from the heat transfer network in real time and upload them to the monitoring center. The monitoring center analyzes the real-time data and diagnoses anomalies, generating dynamic control commands and feeding them back to the actuators. The actuators receive the dynamic control commands and transmit them to the supercritical carbon dioxide control equipment, adjusting the specific operating parameters of each device according to the commands, thereby regulating the system state and achieving intelligent response and precise control. Gases and liquid pyrolysis products from the mining well are extracted and transported to a pyrolysis product separation and recovery device for separation, extracting coal tar and carbon dioxide. The carbon dioxide is then efficiently captured, pressurized, and heated before being converted back into supercritical carbon dioxide and transported back to the supercritical carbon dioxide storage tank for subsequent oil-rich coal pyrolysis reactions, forming a closed-loop recycling of carbon dioxide. This temperature control system, through the efficient collaborative operation of seven modules, achieves precise temperature control, efficient product utilization, and a significant reduction in carbon emissions during the oil-rich coal pyrolysis process.

[0060] In summary, the temperature control system based on the self-ignition and heat generation of semi-coke from oil-rich coal pyrolysis provided in this application embodiment, in the supercritical carbon dioxide control module, stores supercritical carbon dioxide in a supercritical carbon dioxide storage tank, adjusts the supercritical carbon dioxide parameters, and transfers supercritical carbon dioxide when the target parameters are reached, thereby improving the heat transfer efficiency of supercritical carbon dioxide and ensuring the stability of subsequent heat transfer. Furthermore, it performs automated control according to dynamic control instructions from the monitoring center, realizing intelligent and efficient system operation. Leak detection and emergency mechanisms enhance system safety. The injection module receives and injects supercritical carbon dioxide that has reached the target parameters into the system. In the lower reservoir, the injected parameters and post-injection supercritical carbon dioxide parameters are fed back to the heat transfer network. Heat and pressure losses during injection are reduced through insulation design, heating compensation, and dynamic pressure regulation, ensuring the supercritical carbon dioxide remains in a supercritical state. Adding appropriate additives to the supercritical carbon dioxide improves its permeability and distribution uniformity within the coal seam, providing a stable and controllable heat input for subsequent pyrolysis reactions. Within the heat transfer network module, a heat transfer network is established between the combustion and pyrolysis zones. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone to promote the oxidation and auto-ignition of the pyrolytic semi-coke. This process facilitates the transfer of heat and pyrolysis from the supercritical carbon dioxide. The heat released from the spontaneous combustion of semi-coke is transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula to maintain the pyrolysis zone temperature at the optimal pyrolysis temperature, preventing excessively high or low temperatures, improving heat utilization efficiency, reducing dependence on external energy sources, and achieving precise control of the pyrolysis reaction temperature. This significantly improves pyrolysis efficiency and the quality of pyrolysis products. In the detection module, heat transfer network data is monitored through injection wells, monitoring wells, and production wells. The heat distribution is analyzed and fed back to the monitoring center, enabling comprehensive data monitoring and providing a basis for system regulation. Timely detection and feedback of abnormal conditions prevent system failures. The system is controlled to improve stability and reliability. The monitoring center module monitors system operation data, analyzes it, detects anomalies, generates dynamic control commands, and adjusts the mining strategy accordingly. This enables intelligent system control and real-time optimization, improving system safety and pyrolysis efficiency. Furthermore, real-time storage of all data records during the control process provides a basis for subsequent system optimization. The mining module extracts pyrolysis products and transports them to pyrolysis product separation and recovery equipment, ensuring efficient and safe transport. Through collaboration with the monitoring center, the mining strategy is dynamically adjusted to improve the resource recovery rate of pyrolysis products.The pyrolysis product separation and recovery module receives pyrolysis products, extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank. This achieves a closed-loop recycling of carbon dioxide generated from pyrolysis, significantly reducing greenhouse gas emissions, improving resource utilization efficiency, and meeting green and low-carbon requirements. Furthermore, the regeneration and utilization of supercritical carbon dioxide reduces the cost of pyrolysis reactions on oil-rich coal, enhancing both economic efficiency and environmental friendliness, thus contributing to sustainable environmental development.

[0061] The above is a description of the system embodiments of this application. Based on the foregoing embodiments, the method embodiments of this application are described below.

[0062] Please refer to Figure 3 The document illustrates a flowchart of a temperature control method based on the spontaneous combustion heat generation from the oxidation of semi-coke in the pyrolysis of oil-rich coal, as provided in an embodiment of this application. This method is applied to applications such as... Figure 1 The temperature control system shown is based on the heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal. For details not disclosed in the method embodiments, please refer to the system embodiments. The system includes a supercritical carbon dioxide control module, an injection module, a heat transfer network module, a detection module, a monitoring center module, an extraction module, and a pyrolysis product separation and recovery module. Figure 3 As shown, the method includes the following steps S310 to S370.

[0063] Step S310: Store supercritical carbon dioxide, adjust the supercritical carbon dioxide parameters, and transfer supercritical carbon dioxide when the target parameters are reached.

[0064] In this embodiment, carbon dioxide is compressed to a supercritical state by a compressor and stored in a high-pressure storage container. According to the storage requirements and operating conditions of supercritical carbon dioxide, the pressure, temperature and flow rate of supercritical carbon dioxide are adjusted in real time by a control device until the target parameters are reached.

[0065] Step S320: Receive and inject supercritical carbon dioxide that has reached the target parameters into the underground reservoir, and feed back the injection parameters and the supercritical carbon dioxide parameters after injection to the heat transfer network.

[0066] Step S330: Establish a heat transfer network between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide is used as a heat transfer medium to transfer heat to the combustion zone, promoting the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted through a comprehensive heat balance formula to keep the temperature of the pyrolysis zone stable at the optimal pyrolysis temperature.

[0067] In this embodiment, supercritical carbon dioxide is used as a heat transfer medium to transfer heat to the combustion zone, promoting the release of heat through the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are then transferred to the oil-rich coal pyrolysis zone. The pyrolysis reaction of the oil-rich coal is maintained by absorbing the heat transferred from the combustion zone. The heat transferred from the combustion zone to the pyrolysis zone includes conductive heat, convective heat, and radiative heat. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted through a comprehensive heat balance formula to keep the temperature of the pyrolysis zone stable at the optimal pyrolysis temperature.

[0068] In this embodiment, the comprehensive heat balance formula is constructed by considering the heat released from the spontaneous combustion of pyrolysis semi-coke, the heat transferred by supercritical carbon dioxide, the heat required in the pyrolysis zone, and the total heat transfer loss. The comprehensive heat balance formula is expressed by the following equation: ; In the formula, This indicates the heat released during the spontaneous combustion of pyrolysis semi-coke. This indicates that supercritical carbon dioxide transfers heat. This indicates the amount of heat required for the pyrolysis zone; The total heat transfer loss is represented by the following formula: Heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke, heat transferred by supercritical carbon dioxide, heat required in the pyrolysis zone, and total heat transfer loss. ; In the formula, This indicates the combustion rate of pyrolysis semi-coke; This indicates the calorific value of pyrolysis semi-coke; This represents the mass flow rate of supercritical carbon dioxide. This indicates the specific heat capacity of supercritical carbon dioxide. This indicates the injection temperature of supercritical carbon dioxide; Indicates the supercritical carbon dioxide effluent temperature; Indicates the pyrolysis rate of oil-rich coal; This indicates the specific heat capacity of oil-rich coal; This represents the temperature change in the pyrolysis zone; This represents the heat of pyrolysis of oil-rich coal; This indicates heat loss due to heat conduction; This indicates heat loss due to convection. The formulas for calculating heat loss through radiation, conduction, convection, and radiation are as follows: ; In the formula, Indicates the thermal conductivity of the coal seam; This indicates the contact area between the combustion zone and the pyrolysis zone; Represents the temperature gradient; Indicates the convective heat transfer coefficient; Indicates the temperature of the combustion zone; Indicates the temperature of the pyrolysis zone; Indicates the emissivity of the coal seam surface; denoted as the Stefan-Boltzmann constant.

[0069] Step S340: The heat transfer network data is detected by the detection equipment of the injection well, monitoring well and production well, the heat distribution is analyzed and fed back to the monitoring center.

[0070] Step S350: Monitor system operation data, analyze system operation data and perform anomaly detection, generate dynamic control instructions and adjust mining strategy according to dynamic control instructions.

[0071] In this embodiment, the system monitors operational data and preprocesses it; it calculates whether the heat demand of the combustion zone and pyrolysis zone meets the target demand based on the preprocessed system operational data, detects whether there are any abnormal states, and generates dynamic control commands based on the analysis results; it adjusts the operating parameters of each device according to the dynamic control commands to adjust the mining strategy, and monitors in real time whether the expected target is achieved, and stops control when the expected target is achieved; it stores system operational data, dynamic control command execution records, abnormal state records, and real-time data analysis records.

[0072] Step S360: Extract the pyrolysis products and transport them to the pyrolysis product separation and recovery equipment.

[0073] In this embodiment of the application, after the pyrolysis reaction is completed, the pyrolysis products are extracted through the production well; the flow rate, composition and real-time data of the pyrolysis products in the production well are transmitted to the monitoring center; and the pyrolysis products are transported to the pyrolysis product separation and recovery equipment through pressure difference or pumping equipment.

[0074] Step S370: Receive the pyrolysis products and extract and separate them, recover and process the separated carbon dioxide, and transport the processed carbon dioxide to a supercritical carbon dioxide storage tank.

[0075] In this embodiment, pyrolysis products are received, and different components in the gaseous pyrolysis products are separated by a gas separation device to remove impurities from the liquid pyrolysis products and extract usable liquid fuel. The separated carbon dioxide is efficiently captured, pressurized, and heated until the carbon dioxide is in a state suitable for storage, and then the processed carbon dioxide is transported to a supercritical carbon dioxide storage tank.

[0076] In summary, the temperature control method for heat generation based on the oxidation and spontaneous combustion of semi-coke from oil-rich coal pyrolysis provided in this application embodiment stores supercritical carbon dioxide in a supercritical carbon dioxide storage tank, adjusts the supercritical carbon dioxide parameters, and transfers supercritical carbon dioxide when the target parameters are reached, thereby improving the heat transfer efficiency of supercritical carbon dioxide and ensuring the stability of subsequent heat transfer. Furthermore, it performs automated control according to dynamic control instructions from the monitoring center, achieving intelligent and efficient system operation. Leak detection and emergency mechanisms enhance system safety. The method also receives and injects supercritical carbon dioxide that has reached the target parameters into the underground reservoir, feeding back the injection parameters and the injected supercritical carbon dioxide parameters to the heat transfer network. This is achieved through insulation design, heating compensation, and dynamic pressure... Methods such as force regulation are used to reduce heat and pressure losses during the injection process, ensuring that supercritical carbon dioxide remains in a supercritical state. Appropriate additives are added to the supercritical carbon dioxide to improve its permeability and distribution uniformity in the coal seam, providing a stable and controllable heat input for subsequent pyrolysis reactions. A heat transfer network is established between the combustion and pyrolysis zones. Supercritical carbon dioxide acts as a heat transfer medium, transferring heat to the combustion zone to promote the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted using a comprehensive heat balance formula to maintain the pyrolysis zone temperature stably at the optimal pyrolysis temperature, avoiding excessively high or low temperatures. This system improves heat utilization efficiency, reduces dependence on external energy sources, and enables precise control of pyrolysis reaction temperature, significantly enhancing pyrolysis efficiency and product quality. By monitoring heat transfer network data through injection wells, monitoring wells, and production wells, heat distribution is analyzed and fed back to the monitoring center, achieving comprehensive data monitoring and providing a basis for system regulation. Timely detection and feedback of anomalies prevent system malfunctions, improving system stability and reliability. Monitoring and analyzing system operation data and detecting anomalies generates dynamic control commands, adjusting the mining strategy accordingly. This achieves intelligent system regulation and real-time optimization, improving system safety and pyrolysis efficiency. Furthermore, by storing all data records of the regulation process in real time, it provides valuable data for subsequent system optimization. The system provides a basis for optimization; it extracts pyrolysis products and transports them to pyrolysis product separation and recovery equipment to ensure efficient and safe transport of pyrolysis products. Furthermore, through collaboration with the monitoring center, it enables dynamic adjustment of mining strategies to improve the resource recovery rate of pyrolysis products. It receives pyrolysis products and extracts and separates them, recovers and processes the separated carbon dioxide, and transports the processed carbon dioxide to a supercritical carbon dioxide storage tank, achieving a closed-loop recycling of carbon dioxide generated from pyrolysis. This significantly reduces greenhouse gas emissions, improves resource utilization, meets green and low-carbon requirements, and reduces the cost of pyrolysis reactions of oil-rich coal through the regeneration and utilization of supercritical carbon dioxide, enhancing economic efficiency and environmental friendliness, and contributing to sustainable environmental development.

[0077] It should be noted that, in the embodiments of this application, if the above-mentioned temperature control method based on the spontaneous combustion heat generation of semi-coke from oil-rich coal pyrolysis is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, or the part that contributes to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause an electronic device to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of this application are not limited to any specific hardware and software combination.

[0078] Correspondingly, embodiments of this application provide a computer-readable storage medium storing a computer program thereon. When executed by a processor, this computer program implements the steps in the temperature control method based on the spontaneous combustion of semi-coke from oil-rich coal pyrolysis as described in any of the above embodiments. Correspondingly, embodiments of this application also provide a computer program product. When executed by a processor of an electronic device, this computer program product is used to implement the steps in the temperature control method based on the spontaneous combustion of semi-coke from oil-rich coal pyrolysis as described in any of the above embodiments.

[0079] Based on the same technical concept, this application provides an electronic device for implementing the temperature control method for heat generation based on the oxidation and spontaneous combustion of semi-coke from oil-rich coal pyrolysis as described in the above method embodiments. Figure 4 This is a hardware entity diagram of an electronic device provided in an embodiment of this application, such as... Figure 4 As shown, the electronic device 400 includes a memory 410 and a processor 420. The memory 410 stores a computer program that can run on the processor 420. When the processor 420 executes the program, it implements the steps in any of the temperature control methods for heat generation based on the oxidation and spontaneous combustion of semi-coke from oil-rich coal pyrolysis according to the embodiments of this application.

[0080] The memory 410 is configured to store instructions and applications executable by the processor 420, and can also cache data to be processed or already processed by the processor 420 and various modules in the electronic device (e.g., image data, audio data, voice communication data and video communication data), which can be implemented by flash memory or random access memory (RAM).

[0081] When the processor 420 executes the program, it implements the steps of the temperature control method based on the spontaneous combustion of semi-coke from oil-rich coal pyrolysis, as described above. The processor 420 typically controls the overall operation of the electronic equipment 400.

[0082] The aforementioned processor can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), Controller, Microcontroller, and Microprocessor. It is understood that other electronic devices can also implement the functions of the aforementioned processor, and this application does not specifically limit the specific implementation.

[0083] The aforementioned computer storage media / memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM), etc.; or it can be various electronic devices that include one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0084] It should be noted that the descriptions of the storage medium and device embodiments above are similar to the descriptions of the method embodiments above, and have similar beneficial effects. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0085] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0086] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0088] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0089] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0090] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, or the parts that contribute to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause the device automatic test line to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0091] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0092] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0093] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A temperature control system based on the heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal, characterized in that, The system includes: The supercritical carbon dioxide control module is used to store supercritical carbon dioxide, adjust supercritical carbon dioxide parameters, and transfer supercritical carbon dioxide when the target parameters are reached. The injection module is used to receive and inject supercritical carbon dioxide that has reached the target parameters into the underground reservoir, and to feed back the injection parameters and the supercritical carbon dioxide parameters after injection to the heat transfer network. The heat transfer network module is used to establish a heat transfer network between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide, as a heat transfer medium, transfers heat to the combustion zone, promoting the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted through a comprehensive heat balance formula to keep the temperature of the pyrolysis zone stable at the optimal pyrolysis temperature. The detection module is used to detect heat transfer network data through detection equipment in injection wells, monitoring wells, and production wells, analyze heat distribution, and feed it back to the monitoring center; The monitoring center module is used to monitor system operation data, analyze system operation data and perform anomaly detection, generate dynamic control instructions and adjust mining strategies according to dynamic control instructions. The mining module is used to extract pyrolysis products and transport them to pyrolysis product separation and recovery equipment. The pyrolysis product separation and recovery module is used to receive pyrolysis products and extract and separate them, recover and process the separated carbon dioxide, and transport the processed carbon dioxide to a supercritical carbon dioxide storage tank.

2. The system according to claim 1, characterized in that, The supercritical carbon dioxide control module includes a supercritical carbon dioxide storage unit and a supercritical carbon dioxide parameter control unit, wherein: The supercritical carbon dioxide storage unit is used to compress carbon dioxide to a supercritical state using a compressor and to store supercritical carbon dioxide in a high-pressure storage container. The supercritical carbon dioxide parameter control unit is used to adjust the supercritical carbon dioxide pressure, temperature and flow rate in real time through control equipment according to the storage requirements and operating conditions of supercritical carbon dioxide, until the target parameters are achieved.

3. The system according to claim 1, characterized in that, The heat transfer network module includes a combustion zone heat transfer unit, a pyrolysis zone combustion unit, and a pyrolysis zone temperature regulation unit, wherein: The heat transfer unit in the combustion zone is used to transfer heat to the combustion zone using supercritical carbon dioxide as a heat transfer medium, promote the heat release from the oxidation and spontaneous combustion of pyrolysis semi-coke, and transfer the heat transferred by supercritical carbon dioxide and the heat released from the oxidation and spontaneous combustion of pyrolysis semi-coke to the oil-rich coal pyrolysis zone. The combustion unit in the pyrolysis zone is used to maintain the pyrolysis reaction of oil-rich coal by absorbing heat transferred from the combustion zone. The heat transferred from the combustion zone to the pyrolysis zone includes conductive heat, convective heat and radiative heat. The pyrolysis zone temperature regulation unit is used to dynamically adjust the injection parameters and combustion conditions of supercritical carbon dioxide through a comprehensive heat balance formula, so that the temperature of the pyrolysis zone is stably maintained at the optimal pyrolysis temperature.

4. The system according to claim 1, characterized in that, The monitoring center module includes a real-time data monitoring unit, a dynamic control command generation module, a dynamic control command execution unit, and a real-time storage unit, wherein: The real-time data monitoring unit is used to monitor system operation data and preprocess the system operation data. The dynamic control command generation module is used to calculate whether the heat demand of the combustion zone and pyrolysis zone meets the target demand based on the preprocessed system operation data, detect whether there is an abnormal state, and generate dynamic control commands based on the analysis results. The dynamic control command execution unit is used to adjust the operating parameters of each device according to the dynamic control command in order to adjust the mining strategy, and monitor in real time whether the expected target is achieved. When the expected target is achieved, the control stops. The real-time storage unit is used to store system operation data, dynamic control command execution records, abnormal status records, and real-time data analysis records.

5. The system according to claim 1, characterized in that, The mining module is specifically used for: After the pyrolysis reaction is completed, the pyrolysis products are extracted through the mining well; The flow rate, composition, and real-time data of the pyrolysis products in the well are transmitted to the monitoring center. The pyrolysis products are transported to the pyrolysis product separation and recovery equipment via pressure difference or pumping equipment.

6. The system according to claim 1, characterized in that, The pyrolysis product separation and recovery module is specifically used for: Receive pyrolysis products, and use a gas separation device to separate different components in the gaseous pyrolysis products, remove impurities from the liquid pyrolysis products, and extract usable liquid fuel. The separated carbon dioxide is efficiently captured, pressurized, and heated until it is in a state suitable for storage. The treated carbon dioxide is then transported to a supercritical carbon dioxide storage tank.

7. A temperature control method for heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal, characterized in that, A temperature control system for heat generation from the oxidation and spontaneous combustion of semi-coke in the pyrolysis of oil-rich coal is applied. The system includes a supercritical carbon dioxide control module, an injection module, a heat transfer network module, a detection module, a monitoring center module, an extraction module, and a pyrolysis product separation and recovery module. The method includes: Store supercritical carbon dioxide, adjust supercritical carbon dioxide parameters, and transfer supercritical carbon dioxide when the target parameters are reached; It receives and injects supercritical carbon dioxide that has reached the target parameters into the underground reservoir, and feeds back the injection parameters and the supercritical carbon dioxide parameters after injection to the heat transfer network. A heat transfer network is established between the combustion zone and the pyrolysis zone. Supercritical carbon dioxide is used as a heat transfer medium to transfer heat to the combustion zone, promoting the oxidation and spontaneous combustion of pyrolysis semi-coke. The heat transferred by supercritical carbon dioxide and the heat released by the oxidation and spontaneous combustion of pyrolysis semi-coke are transferred to the oil-rich coal pyrolysis zone. The injection parameters and combustion conditions of supercritical carbon dioxide are dynamically adjusted through a comprehensive heat balance formula to keep the temperature of the pyrolysis zone stable at the optimal pyrolysis temperature. Heat transfer network data is detected by detection equipment in injection wells, monitoring wells, and production wells. The heat distribution is analyzed and fed back to the monitoring center. Monitor system operation data, analyze system operation data and perform anomaly detection, generate dynamic control instructions and adjust mining strategies according to dynamic control instructions; Extract the pyrolysis products and transport them to pyrolysis product separation and recovery equipment; The system receives pyrolysis products, extracts and separates them, recovers and processes the separated carbon dioxide, and then transports the processed carbon dioxide to a supercritical carbon dioxide storage tank.

8. An electronic device comprising a memory and a processor, the memory storing a computer program executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method of claim 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 7.

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