Multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system

Abstract

The present invention discloses a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, which belongs to the technical field of oil shale mining. The simulation system includes a waste heat recovery and utilization pipeline, an oil and gas collection pipeline, and an oil shale heating and hydrocarbon generation pipeline. The present invention sets a heating furnace, a steam generator, and a magnetron to heat the oil shale separately or compositely in three heating methods: heat conduction, heat convection, and heat radiation, thereby improving the heating efficiency of the oil shale and clarifying the oil shale hydrocarbon generation mechanism under the three heat transfer methods. The present invention also designs a waste heat recovery and utilization pipeline, which converts the low-grade thermal energy in the system cooling stage into electrical energy through an expander and a generator, thereby improving the energy utilization efficiency and providing theoretical support for the mining of unconventional energy oil shale.

Description

Technical Field

[0001] The invention relates to the technical field of oil shale mining, and in particular to a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system. Background Art

[0002] As traditional energy is consumed, new energy cannot meet daily production needs in a timely manner. Unconventional energy mining has gradually gained attention. Oil shale is an important source of unconventional energy. According to the heat transfer method, oil shale mining is divided into three types: conduction heating, convection heating and radiation heating.

[0003] The heating process of conduction heating is easy to control, but it is greatly affected by groundwater. Convection heating has high heating efficiency, but the heating is uncontrollable. Radiant heating has high energy utilization, but the mining cost is too high. The present invention can realize the combined use of three heating methods to heat oil shale, effectively compare the effective heating temperature range and advantages and disadvantages of each heating method, improve the heating efficiency of oil shale, and make oil shale mining more economical, environmentally friendly and efficient.

[0004] After the oil shale reaches the optimal hydrocarbon generation temperature, the traditional method is to wait for the oil and gas products to return to normal temperature through cold trap equipment and natural heat dissipation before collecting the products, so that the heat energy in the cooling stage is not fully utilized. The present invention fully utilizes the heat energy in the cooling stage, converts the heat energy into electrical energy for storage, and fully realizes the waste heat utilization of oil shale hydrocarbon generation. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, which can heat oil shale by conduction, convection and radiation, and make full use of the thermal energy in the cooling stage, thereby realizing waste heat utilization while improving heating efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, the system comprising: an electric storage device, a generator, an expander, a steam generator, a central processing unit, a power socket, a first pressure sensor, a vacuum pump, a second pressure sensor, a water storage tank, a water pump, a gas-liquid separator, a third pressure sensor, a gas collection device, a liquid collection device, a solvent pump, a solvent storage tank, a hydrocarbon exhaust container, a solenoid valve, an oil shale hydrocarbon generation device, a one-way valve, a gas storage tank and a fan; in the cooling stage of the oil shale hydrocarbon generation device, the waste heat recovery and utilization pipeline comprises an electric storage device, a generator, an expander, a fan, a gas storage tank, a central processing unit and an oil shale hydrocarbon generation device connected to a gas-liquid separator; the electric storage device is connected to the generator to store the electricity generated by the generator; the generator is connected to the electric storage device and the expander to convert the mechanical energy generated by the expander into electrical energy and transmit it to the electric storage device; the expander is connected to the generator, the oil shale hydrocarbon generation device and the fan, and the heat energy generated by the surrounding gas of the oil shale hydrocarbon generation device in the cooling stage is converted into mechanical energy through the expander.

[0007] Furthermore, the fan is connected to the expander, the central processor and the gas storage tank, and the air transportation of the oil shale hydrocarbon generation device is controlled according to the electrical signal of the central processor; the gas storage tank is connected to the fan and the oil shale hydrocarbon generation device, and is used to store the air used by the waste heat recovery pipeline; optionally, the volume of the gas storage tank is slightly larger than the volume of the equipment in the shell of the oil shale hydrocarbon generation device excluding the heating furnace. The steam generator is connected to the central processor and the oil shale hydrocarbon generation device, and under the control of the central processor, the steam generator produces steam and inputs it into the oil shale hydrocarbon generation device to heat the oil shale;

[0008] Optionally, a one-way valve is provided on the pipeline from the steam generator to the oil shale hydrocarbon generation device to transport steam in one direction and maintain the airtightness of the system.

[0009] Furthermore, the central processor is the hub of the equipment, connected to the fan to control the air circulation of the waste heat recovery pipeline, connected to the steam generator to control the generation and supply of steam, connected to the oil shale hydrocarbon generation device to control the heating temperature, heating time, heating pressure of the oil shale and the selection of three heat sources. The power socket is connected to the oil shale hydrocarbon generation device to supply power to the microwave heating heat source of the oil shale.

[0010] After the oil shale hydrocarbon generation equipment is cooled, the oil and gas collection pipeline includes a first pressure sensor, a vacuum pump, a second pressure sensor, a water storage tank, a water adding pump, a gas-liquid separator, a third pressure sensor, a gas collection device, a liquid collection device, a solvent pump, a solvent storage tank, a hydrocarbon exhaust container, a solenoid valve and the oil shale hydrocarbon generation equipment;

[0011] The first pressure sensor is connected to the electromagnetic valve to measure the oil shale hydrocarbon generation pressure and display the pressure data; the electromagnetic valve is connected to the oil shale hydrocarbon generation device, the first pressure sensor and the hydrocarbon discharge container, and when the oil shale discharges hydrocarbons, the electromagnetic valve opens to discharge the oil and gas products into the hydrocarbon discharge container;

[0012] The hydrocarbon exhaust container is connected with the electromagnetic valve, vacuum pump, second pressure sensor, water storage tank, solvent storage tank and gas-liquid separator. The vacuum pump and second pressure sensor are connected to create a vacuum environment for the system. The water storage tank is connected to add water to the sample to create a formation environment similar to the sample. The solvent storage tank is connected to allow the solvent to clean the oil and gas collection pipeline 3 to 4 times during the oil and gas product extraction stage. The gas-liquid separator is connected to transport the oil and gas products to the gas-liquid separator.

[0013] The water storage tank is connected with the water adding pump and the hydrocarbon exhaust container, and deionized water is added into the sample chamber by the pressure of the water adding pump; the solvent storage tank is connected with the solvent pump, the hydrocarbon exhaust container and the gas-liquid separator, and the organic solvent is filled to clean the oil and gas collection pipeline; the gas-liquid separator is connected with the hydrocarbon exhaust container, the gas collecting device and the liquid collecting device, and the oil and gas products are separated in the gas-liquid separator through the hydrocarbon exhaust container, and the gas is transported to the gas collecting device, and the liquid is transported to the liquid collecting device;

[0014] The gas collection device is connected to the gas-liquid separator and the third pressure sensor, stores hydrocarbon gas and monitors the tightness of the system and the system pressure through the third pressure sensor;

[0015] The liquid collecting device is connected to the gas-liquid separator to store liquid hydrocarbons. The oil shale hydrocarbon generation device includes an air output pipe, a supporting component, an air input pipe, a hydraulic press lower cylinder, a sample chamber, a device shell, a heating furnace, a steam input pipe, a first temperature sensor, a second temperature sensor, a circular hole structure, a hydraulic press upper cylinder, a filter guide tube, a magnetron, a high-voltage diode, a transformer, a power line, and a hydrocarbon discharge pipeline;

[0016] Optionally, the supporting component is determined according to the size of the device shell and the sample bin of the oil shale hydrocarbon generation device; the air output pipe is connected to the expander to transport the heat energy in the air to the expander during the cooling stage; the air input pipe is connected to the air storage tank to form a passage for the waste heat recovery pipeline; the lower cylinder of the hydraulic press and the upper cylinder of the hydraulic press are connected to the sample bin to apply pressure to the sample bin so that the pressure of the sample bin is close to the formation conditions;

[0017] Furthermore, the sample chamber is used to hold the sample, and its size and shape are mainly based on airtightness, and the size is set according to the experimental plan;

[0018] Furthermore, the device housing is used to support the oil shale hydrocarbon generation device; the heating furnace conducts heating to the sample chamber under the control of the central processor; the steam input pipe is connected to the sample chamber and the steam generator, and conducts convection heating to the sample under the control of the central processor;

[0019] Optionally, the position of the steam input pipe is set according to the position of the sample bin and the sample heating scheme; the first temperature sensor is used to monitor the temperature of the sample bin; the second temperature sensor is used to monitor the temperature of the waste heat recovery pipeline, and when the loop temperature is higher than 200°C during the cooling stage, the temperature signal is converted into an electrical signal and transmitted to the central processing unit, and the fan is started to convert thermal energy into electrical energy for storage; the circular hole structure is used to form a passage for the waste heat recovery pipeline; the filter tube, magnetron, high-voltage diode, transformer and power cord are connected to the sample bin, and the sample is radiantly heated under the control of the central processing unit; the hydrocarbon exhaust pipeline is connected to the sample bin and the solenoid valve, and is used to connect the oil and gas collection pipeline to discharge the oil and gas products.

[0020] Further, the gas-liquid separator (12) comprises a separation box, a hollow plate is fixedly installed horizontally at the upper left corner of the separation box, the hollow plate has a plurality of vertically arranged flow guide holes, a side sealing plate vertically arranged thereto is fixedly connected to the right side of the hollow plate, an exhaust duct is fixedly installed obliquely upward above the hollow plate, a portion of the exhaust duct located above the hollow plate is provided with a plurality of air inlet holes, and an exhaust fan is coaxially installed inside the higher end of the exhaust duct to pump gas into an air flow bin at the top right side of the separation box for escape;

[0021] A fairing is also installed on the side of the separation box close to the side sealing plate. The fairing allows the liquid falling through the hollow plate to flow smoothly into the liquid storage bin after being rectified by the fairing. The bottom of the liquid storage bin is provided with a drainage hole, and the upper end of the drainage hole is covered with an isolation cover with a plurality of perforations, and a grid plate is horizontally fixed in the isolation cover; the right side plate of the liquid storage bin is vertically arranged to allow the oil in the upper layer of the liquid to overflow from the top of the right side plate and be discharged through the oil storage bin on the right side of the liquid storage bin.

[0022] Furthermore, the airflow bin is horizontally arranged, one end of which is connected to the exhaust pipe, and the other end is provided with an air outlet pipe on the upper part; a number of fog catchers in contact with each other are horizontally arranged in the airflow bin, the fog catchers can capture liquid droplets in the gas, a guide rod is vertically fixed to the top of the fog catcher, a limit plate is fixed to the top of the guide rod, a support spring sleeved on the guide rod is provided below the limit plate, and in a non-working state, the support spring limits the fog catcher to a sliding hole at the bottom of the airflow bin at which its bottom end is located, and when the fog catcher captures enough liquid droplets and slides completely downward out of the airflow bin, a pair of hydraulic telescopic blocks arranged below the airflow bin move closer to each other to squeeze the falling fog catcher to seep out liquid.

[0023] Furthermore, a control button is provided on the top of the separation box below the limit plate, and the control button is used to control the telescopic movement of the hydraulic telescopic block, and when the corresponding fog catching block falls, the limit plate can press the control button, and the hydraulic telescopic blocks move closer to each other;

[0024] A gas-liquid separation plate is also horizontally provided below the airflow bin, with a groove in the center of the gas-liquid separation plate, and the bottom of the groove has a plurality of ring-shaped array holes; a driving gear plate located below the groove is also coaxially rotatably installed at the bottom of the gas-liquid separation plate, and the driving gear plate is also provided with a plurality of ring-shaped array holes, one side of the driving gear plate is meshed with the driving gear driven by the driving motor through the gear assembly, and when the limit plate presses the corresponding control button, the number of turns of the driving motor causes the through holes on the driving gear plate and the through holes on the groove to change from an initial mutually staggered state to a coaxially aligned connected state.

[0025] Furthermore, a water pump is installed on the left side of the separation box near the top, and the inlet end of the water pump is connected to the bottom of several annular cavities connected in series. A gas branch pipe is vertically fixed to the top of each annular cavity. A section of a gas main pipe connected to the gas branch pipe is coaxially inserted into the exhaust pipe and passes over all the air inlet holes and is close to the exhaust fan; a control valve is provided on the bottom discharge pipe section of the lower half of the annular cavity, and a liquid level gauge is vertically provided inside the last lower half cavity filled with liquid. When the liquid level detected by the liquid level gauge reaches the cavity mouth of the lower half cavity, all control valves are opened to allow the water pump to draw liquid into the separation box, and when the liquid level detected by the liquid level gauge is lower than the set height, the control valve and the water pump are closed.

[0026] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0027] The embodiment of the present invention provides a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system. After the sample is placed in the sample chamber, the system controls the heating furnace, steam generator and magnetron through the central processing unit to carry out three types of heat sources, namely heat conduction, heat convection and heat radiation, on the sample. The system can also control different heat sources to heat the sample in different temperature sections according to the characteristics of different samples, and control the composite heating method of different heat sources, thereby improving the heating efficiency of oil shale, promoting the hydrogenation and quality improvement of oil shale, clarifying the thermal effects and non-thermal effects of different heating methods on oil shale, and having great significance for clarifying the hydrocarbon generation mechanism of oil shale.

[0028] The simulation system of the present invention controls the fan through a central controller during the cooling stage, converts the heat energy in the air with a temperature above 200°C outside the heating furnace into electrical energy and stores it in the power storage device, thereby realizing the waste heat utilization of low-grade heat, improving energy utilization efficiency, providing additional energy supply, and promoting technological innovation and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A simplified structural diagram of a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system provided in an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of an oil shale hydrocarbon generation device provided in an embodiment of the present invention;

[0032] Figure 3 This is a simplified structural diagram of the gas-liquid separator in this simulation system;

[0033] Figure 4 It is a partial enlarged view of the gas-liquid separator;

[0034] Figure 5 A top view of the groove of the gas-liquid separator

[0035] Figure 6 A top view of the driving gear plate;

[0036] Figure 7 A cross-sectional view of a fog catching block;

[0037] Figure 8 for Figure 7 The enlarged view of A in FIG.

[0038] Fig. 9 Schematic diagram of the pipeline connection structure on the left side of the separation box.

[0039] Explanation of reference numerals: power storage device 1, generator 2, expander 3, steam generator 4, central processing unit 5, power socket 6, first pressure sensor 7, vacuum pump 8, second pressure sensor 9, water storage tank 10, water adding pump 11, gas-liquid separator 12, third pressure sensor 13, gas collecting device 14, liquid collecting device 15, solvent pump 16, solvent storage tank 17, hydrocarbon exhaust container 18, solenoid valve 19, oil shale hydrocarbon generation device 20, one-way valve 21, gas storage tank 22, fan 23, air output pipe 20-1, support component 20-2, air input pipe 20-3, hydraulic press lower cylinder 20-4, sample chamber 20-5, device housing 20-6, heating furnace 20-7, steam input pipe 20-8, first temperature sensor 20-9, second temperature sensor 20-10, circular hole structure 20-11, hydraulic press upper cylinder 20-1 2. Filter duct 20-13, magnetron 20-14, high-voltage diode 20-15, transformer 20-16, power cord 20-17, hydrocarbon exhaust pipe 20-18, exhaust pipe 24, air inlet 25, exhaust fan 26, air flow bin 27, guide rod 28, support spring 29, limit plate 30, control button 31, air outlet pipe 32, fog catching block 33, sliding hole 34, hydraulic telescopic block 35, gas-liquid separator 36, groove 37, through hole 38, driving gear plate 39, driving gear 40, driving motor 41, fairing 42, isolation cover 43, fence plate 44, right side plate 45, oil storage tank 46, liquid storage tank 47, annular cavity 48, water pump 49, gas branch pipe 50, gas main pipe 51, liquid level meter 52, adsorption core 53, first filter cover 54, second filter cover 55, pressure spring 66, separation box 67, hollow plate 68, side sealing plate 69. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The purpose of the present invention is to provide a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, which can heat the oil shale with multiple heat sources to improve the heating efficiency and realize the waste heat utilization of thermal energy.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] As a basic operation step, after placing the sample in the sample chamber 20-5, the central processor 5 controls the heating furnace 20-7, the steam generator 4 and the magnetron 20-14 to provide the sample with three heating forms of heat sources, namely conduction heating, convection heating and radiation heating, respectively. According to the characteristics of the sample, a single heat source or a composite supply of multiple heat sources is realized in different temperature ranges. In the cooling stage after the oil shale hydrocarbon generation is completed, the central controller 5 controls the fan 23 to convert low-grade thermal energy into electrical energy and store it in the power storage device 1. According to the signal transmission of the second temperature sensor 20-10, when the temperature of the oil and gas products reaches room temperature, the oil and gas products are collected.

[0044] Based on the above principle, the embodiment of the present invention provides a multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, such as Figure 1 , including an electricity storage device 1, a generator 2, an expander 3, a steam generator 4, a central processing unit 5, a power socket 6, a first pressure sensor 7, a vacuum pump 8, a second pressure sensor 9, a water storage tank 10, a water adding pump 11, a gas-liquid separator 12, a third pressure sensor 13, a gas collecting device 14, a liquid collecting device 15, a solvent pump 16, a solvent storage tank 17, a hydrocarbon exhaust container 18, a solenoid valve 19, an oil shale hydrocarbon generation device 20, a one-way valve 21, a gas storage tank 22, and a fan 23. During the cooling stage of the oil shale hydrocarbon generation equipment, the waste heat recovery and utilization pipeline includes an electric storage device 1, a generator 2, an expander 3, a fan 23, a gas storage tank 22, a central processor 5 and an oil shale hydrocarbon generation device 20. The central controller receives an electrical signal of a temperature greater than 200°C from a second temperature sensor 20-10 to control the operation of the fan, so that the low-grade heat in the cooling stage is converted into electrical energy for storage through the expander 3, the generator 2 and the electric storage device 1, and a passage is formed through the expander 3, the fan 23, the gas storage tank and the oil shale hydrocarbon generation device 20 to support waste heat recovery.

[0045] It should be noted that the fan 23 in the above embodiment can be used flexibly according to the specific needs of the application scenario. For example, the fan 23 in the expander 3 provides power for gas flow and helps control the inlet and outlet pressures of the expander 3. Specifically, the fan 23 generates airflow by rotating to send the gas to be expanded into the expander 3. In this process, the fan 23 needs to overcome the resistance of the gas and the loss of the pipeline to ensure that the gas can smoothly enter the expander 3. At the same time, the fan 23 can also change the flow rate and pressure of the gas by adjusting its rotation speed or blade angle, thereby controlling the inlet and outlet pressures of the expander 3. This is very important for ensuring the stable operation of the expander 3 and improving the efficiency. Therefore, it can be selected whether to turn on the fan 23 as needed.

[0046] As one of the specific implementation structures, such as Figure 1-Figure 2 The power storage device 1 is connected to the generator 2 and is used to store the electricity generated by the generator. The generator 2 is connected to the power storage device 1 and the expander 3, and the mechanical energy generated by the expander 3 is converted into electrical energy and transmitted to the power storage device 1. The expander 3 is connected to the generator 1, the oil shale hydrocarbon generation device 20 and the fan 23. The heat energy generated by the surrounding gas of the oil shale hydrocarbon generation device 20 during the cooling stage is converted into mechanical energy by the expander 3. The expander 3 is a vertical piston type. The fan 23 is connected to the expander 3, the central processor 5 and the gas storage tank 22, and the air transportation of the oil shale hydrocarbon generation device 20 is controlled according to the electrical signal of the central processor 5. The fan 23 is a Roots blower. The gas storage tank 22 is connected to the fan 23 and the oil shale hydrocarbon generation device 20, and is used to store the excess air of the waste heat recovery pipeline. The volume of the gas storage tank 22 is slightly larger than the equipment volume in the shell 20-6 of the oil shale hydrocarbon generation device excluding the heating furnace 20-7. The steam generator 4 is connected to the central processor 5 and the oil shale hydrocarbon generation device 20. Under the control of the central processor 5, the steam generator 4 produces steam and inputs it into the oil shale hydrocarbon generation device 20 to heat the oil shale. The steam generator 4 is an electric heating steam generator, including a water supply system, an automatic control system, a furnace and heating system, and a safety protection system. The one-way valve 21 is on the pipeline from the steam generator 4 to the oil shale hydrocarbon generation device 20, which is used to transport steam in one direction and maintain the airtightness of the system. The central processor 5 is the hub of the equipment, connected to the fan 23 to control the air circulation of the waste heat recovery pipeline, connected to the steam generator 4 to control the generation and supply of steam, and connected to the oil shale hydrocarbon generation device 20 to control the heating temperature, heating time, heating pressure of the oil shale and the selection of three heat sources.

[0047] like Figure 1 After the oil shale hydrocarbon generation equipment 20 is cooled down, the oil and gas collection pipeline includes the first pressure sensor 7, the vacuum pump 8, the second pressure sensor 9, the water storage tank 10, the water adding pump 11, the gas-liquid separator 12, the third pressure sensor 13, the gas collection device 14, the liquid collection device 15, the solvent pump 16, the solvent storage tank 17, the hydrocarbon discharge container 18, the solenoid valve 19, and the oil shale hydrocarbon generation device 20. First, the hydrocarbon gas of the gas collection device 14 is collected, and then the hydrocarbon liquid of the liquid collection device 15 is collected, and then the solvent is added to the solvent storage tank 17, and the solvent pump 16 is started to clean the pipeline with the solvent and collect the solution, and the cleaning is performed 3 to 4 times.

[0048] In this embodiment, Figure 1, its first pressure sensor 7 is connected to the electromagnetic valve 19 to measure the hydrocarbon generation pressure of the oil shale and display the pressure data. The electromagnetic valve 19 is connected to the oil shale hydrocarbon generation device 20, the first pressure sensor 7 and the hydrocarbon discharge container 18. When the oil shale discharges hydrocarbons, the electromagnetic valve 19 opens to discharge the oil and gas products into the hydrocarbon discharge container 18. The hydrocarbon discharge container 18 is connected to the electromagnetic valve 19, the vacuum pump 8, the second pressure sensor 9, the water storage tank 10, the solvent storage tank 17 and the gas-liquid separator 12. The vacuum pump 8 and the second pressure sensor 9 are connected to create a vacuum environment for the system, the water storage tank 10 is connected to add water to the sample to create a formation environment similar to the sample, the solvent storage tank 17 is connected to allow the solvent to clean the oil and gas collection pipeline 3 to 4 times during the oil and gas product extraction stage, and the gas-liquid separator 12 is connected to transport the oil and gas products to the gas-liquid separator 12. The water storage tank 10 is connected to the water adding pump 11 and the hydrocarbon discharge container 18, and deionized water is added to the sample compartment 20-5 by the pressure of the water adding pump 11. The solvent storage tank 17 is connected to the solvent pump 16, the hydrocarbon exhaust container 18 and the gas-liquid separator 12, and is filled with organic solvent to clean the oil and gas collection pipeline. The gas-liquid separator 12 is connected to the hydrocarbon exhaust container 18, the gas collection device 14 and the liquid collection device 15. The oil and gas products are separated in the gas-liquid separator 12 through the hydrocarbon exhaust container 18, and the gas is transported to the gas collection device 14, and the liquid is transported to the liquid collection device 15. The gas collection device 14 is connected to the gas-liquid separator 12 and the third pressure sensor 13, and stores hydrocarbon gas and monitors the tightness and system pressure of the system through the third pressure sensor 13. The liquid collection device 15 is connected to the gas-liquid separator 12 to store liquid hydrocarbons.

[0049] Please continue reading Figure 1 The oil shale heating hydrocarbon generation pipeline includes an oil shale hydrocarbon generation device 20, a steam generator 4, a one-way valve 21, a central processing unit 5, a power socket 6, a vacuum pump 8, a second pressure sensor 9, a water storage tank 10 and a water adding pump 11. First, the deionized water in the water storage tank 10 is filled with the sample through the water adding pump 11 to create a similar formation environment. Secondly, the second pressure sensor 9 and the vacuum pump 8 make the system a vacuum environment. Then, the central processing unit 5 controls the heating furnace for conduction heating, the steam generator 4 for convection heating, and the microwave heating of the sample.

[0050] The water storage tank 10 and the water pump 11 in this embodiment are connected to the oil shale hydrocarbon generation device 20, and the water in the water storage tank 10 is pressurized into the sample chamber 20-5 by the water pump 11. The second pressure sensor 9 and the vacuum pump 8 are connected to the pipeline of the entire system. The second pressure sensor 9 displays the pressure of the vacuum pump 8. The vacuum pump 8 removes the air in the system, and the system becomes a vacuum environment. The steam generator 4 generates steam and transports it to the oil shale hydrocarbon generation device 20 for convection heating of the sample. The one-way valve 21 controls the one-way flow of steam to avoid the negative impact of backflow and create a closed environment for the system. The power socket 6 is connected to the oil shale hydrocarbon generation device 20 and is used to supply electricity to the microwave heating heat source of the oil shale.

[0051] like Figure 2 As shown, the oil shale hydrocarbon generation device 20 includes an air output pipe 20-1, a supporting component 20-2, an air input pipe 20-3, a hydraulic press lower cylinder 20-4, a sample chamber 20-5, a device shell 20-6, a heating furnace 20-7, a steam input pipe 20-8, a first temperature sensor 20-9, a second temperature sensor 20-10, a circular hole structure 20-11, a hydraulic press upper cylinder 20-12, a filter guide tube 20-13, a magnetron 20-14, a high-voltage diode 20-15, a transformer 20-16, a power line 20-17, and a hydrocarbon exhaust pipeline 20-18. The oil shale hydrocarbon generation device 20 is the hub of the system.

[0052] The supporting component 20-2 in this embodiment is determined according to the size of the device shell and the sample bin of the oil shale hydrocarbon generation device. The air output pipe 20-1 is connected to the expander 3, and is used to transport the heat energy in the air to the expander 3 during the cooling stage. The air input pipe 20-3 is connected to the gas storage tank 22, so that the waste heat recovery pipeline forms a passage. The lower cylinder 20-4 of the hydraulic press and the upper cylinder 20-12 of the hydraulic press are connected to the sample bin 20-5, and are used to apply pressure to the sample bin 20-5, so that the pressure of the sample bin 20-5 is close to the formation conditions. The sample bin 20-5 is used to install samples, and the size and shape are mainly based on airtightness, and the size is set according to the experimental plan. The device shell 20-6 is used to support the oil shale hydrocarbon generation device. The heating furnace 20-7 conducts and heats the sample bin 20-5 under the control of the central processor 5. The steam input pipe 20-8 is connected to the sample bin 20-5 and the steam generator 4, and conducts convection heating to the sample under the control of the central processor 5. The position of the steam input pipe 20-8 is set according to the position of the sample chamber 20-5 and the sample heating scheme, and a valve is set on the pipeline to ensure the airtightness of the system. The first temperature sensor 20-9 is used to monitor the temperature of the sample chamber, and the second temperature sensor 20-10 is used to monitor the temperature of the waste heat recovery pipeline. When the loop temperature is higher than 200°C during the cooling stage, the temperature signal is converted into an electrical signal and transmitted to the central processor, and the fan 23 is started to convert heat energy into electrical energy for storage; in addition, a circular hole structure 20-11 can also be set adaptively to form a passage for the waste heat recovery pipeline.

[0053] In the above embodiments, more specifically, the filter conduit 20-13, magnetron 20-14, high-voltage diode 20-15, transformer 20-16 and power line 20-17 are connected to the sample chamber to radiate and heat the sample under the control of the central processor 5. The hydrocarbon exhaust pipeline 20-18 is connected to the sample chamber 20-5 and the solenoid valve 19, and is used to connect the oil and gas collection pipeline to discharge the oil and gas products.

[0054] In the above embodiments, in order to clearly explain the composition and principle of each pipeline system, some components are shared components, such as having multiple interfaces and can be connected to multiple pipeline systems at the same time. Therefore, in the above description, they may be included in multiple pipeline systems at the same time.

[0055] As one of the more specific implementation structures, the gas-liquid separator mentioned above mainly includes a separation box 67, such as Figure 3-Figure 4 As shown, a hollow plate 68 is horizontally fixedly installed at the upper left corner of the separation box 67. The hollow plate 68 has a plurality of vertically arranged guide holes, so that after the gas-liquid mixture enters the separation box 67, the liquid contained therein flows through the hollow plate 68, is dispersed through the vertical guide holes, and spreads downward, which is conducive to the separation of the entrained airflow from the liquid and escapes from the hollow plate 68 and moves upward. At the same time, a side sealing plate 69 perpendicular to the hollow plate 68 is fixedly connected to the right side thereof to prevent the liquid from splashing and flowing on the right side. An exhaust pipe 24 is fixed obliquely upward above the hollow plate 68. The part of the exhaust pipe 24 located above the hollow plate 68 is provided with a plurality of air inlet holes 25. The gas entering the separation box 67 and the gas escaping upward through the hollow plate 68 all enter the exhaust pipe 24 from the air inlet holes 25. An exhaust fan 26 is coaxially installed inside the higher end of the exhaust pipe 24 to quickly absorb the gas and pump the gas into the airflow bin 27 at the top right side of the separation box 67 for escape, thereby achieving the purpose of separating the gas. In addition, in this embodiment, if Figure 3-Figure 4 As shown, a fairing 42 is installed on the side of the separation box 67 close to the side sealing plate 69. The fairing 42 allows the liquid falling through the hollow plate 68 to flow very smoothly into the liquid storage tank 47 after being rectified by the fairing 42, thereby avoiding vibration and generating additional bubbles. The bottom of the liquid storage tank 47 has a drainage hole, and the upper end of the drainage hole is covered with an isolation cover 43 with a plurality of perforations. A grid plate is fixed horizontally in the isolation cover 43. The main components of the liquid are water and oil, with water in the lower layer and oil in the upper layer. When the water layer is discharged, it is avoided that a vortex is generated due to drainage, which causes the floating oil on the upper part of the vortex to be sucked downward, thereby causing the oil to be discharged. On the basis of the above structure, the right side plate 45 of the liquid storage tank 47 is vertically arranged. This right side plate 45 also serves as an overflow functional plate, which can make the upper layer of oil in the liquid overflow from the top of the right side plate 45 to prevent water from flowing into the oil storage tank 46. That is, the oil dynamically overflowing from the right side plate 45 is discharged through the oil storage tank 46 on the right side of the liquid storage tank 47.

[0056] Specifically, if Figure 4As shown, the airflow bin 27 in this embodiment is arranged horizontally, one end of the airflow bin 27 is connected to the exhaust pipe 24 to receive the drawn gas, and the other end of the airflow bin 27 is provided with an air outlet pipe 32 on the upper part to send the gas out. In order to absorb some liquid droplets, or mist, mixed in the airflow, a plurality of fog catching blocks 33 that are in contact with each other are arranged horizontally in the airflow bin 27. These fog catching blocks 33 can capture liquid droplets in the gas. For specific production, please refer to Figure 7-Figure 8 , a first filter cover 54 and a second filter cover 55 are placed on the outer cover of a plurality of adsorption core bodies 53, and the two are connected by a pressure-bearing spring so that the hydraulic telescopic block 35 mentioned later can be quickly restored after being squeezed. During installation, a guide rod 28 is vertically fixed to the top of the fog catching block 33, a limit plate 30 is fixed to the top of the guide rod 28, and a support spring 29 sleeved on the guide rod 28 is provided below the limit plate 30. In the non-working state, that is, in the normal state, the support spring 29 limits the fog catching block 33 to a sliding hole 34 at the bottom of the airflow bin 27 at its bottom end, so that the fog in the airflow passes through the layers of fog catching blocks 33, and finally obtains pure gas, which is then output from the air outlet pipe 32. In practice, when the mist catching block 33 captures enough liquid droplets, its own weight increases, thereby overcoming the elastic supporting force of the supporting spring 29, and then completely slides downward out of the airflow bin 27. A pair of hydraulic telescopic blocks 35 arranged below the airflow bin 27 also move closer to each other, which is enough to squeeze the falling mist catching block 33, and then liquid seeps out, and the mist liquid is liquefied for collection of the liquid.

[0057] In this embodiment, Figure 4 A control button 31 is provided on the top of the separation box 67 below the limit plate 30. The control button 31 is used to control the telescopic movement of the hydraulic telescopic block 35. When the corresponding fog catching block 33 falls into place, the limit plate 30 can press the control button 31. After the control button 31 is pressed, the hydraulic telescopic blocks 35 move closer to each other, and automatically reset after one squeeze. The telescopic displacement of each hydraulic telescopic block 35 can be adaptively preset according to the specific number of blocks dropped to meet the purpose of squeezing out liquid.

[0058] See also Figure 4 A gas-liquid separator 36 may be horizontally provided below the gas flow chamber 27, and a groove 37 may be provided in the center of the gas-liquid separator 36. Figure 5 The bottom of the groove 37 has a plurality of annular arrays of through holes 38, which can be gradually reduced in radial direction. The bottom of the gas-liquid separation plate 36 is also coaxially rotatably mounted with a driving gear plate 39 located below the groove 37. Figure 6The driving gear disc 39 is also provided with a plurality of circles of through holes 38 in a circular array. One side of the driving gear disc 39 is meshed with the driving gear 40 driven by the driving motor 41 through the gear assembly. The driving motor 41 can be fixedly mounted upside down on the bottom of the airflow bin 27. When the limit plate 30 presses the corresponding control button 31, the number of circles rotated by the driving motor 41 can make the through holes 38 on the driving gear disc 39 and the through holes 38 on the groove 37 change from the initial mutually staggered state to a mutually coaxially aligned connected state, that is, when the fog catching block 33 is squeezed, the squeezed liquid can directly fall from the through holes 38 into the above-mentioned liquid storage bin 47, which is very clever. Moreover, according to the setting of the driving motor 41 with a fixed number of revolutions, the alignment and connection of all the through holes 38 can be achieved.

[0059] A water pump 49 is installed on the left side of the separation box 67 near the top. The inlet end of the water pump 49 is connected to the bottom of several annular cavities 48 connected in series. A gas branch pipe 50 is vertically fixed to the top of each annular cavity 48. A section of a gas main pipe 51 connected to these gas branch pipes 50 needs to be coaxially inserted into the exhaust pipe 24 and must pass over all the air inlet holes 25 to prevent the air flow from backflowing from the air inlet holes 25. Then, the gases naturally separated from the multiple annular cavities 48 as they flow and fill the half-cavities one by one can be directly sucked into the airflow bin 27 by the exhaust fan 26.

[0060] like Figure 3 and Fig. 9 In the structure shown, a control valve, such as a solenoid valve, is provided on the discharge pipe section at the bottom end of the lower half of the annular cavity 48, and a liquid level gauge 52 is vertically provided inside the last lower half of the cavity filled with liquid. When the liquid level detected by the liquid level gauge 52 reaches the cavity mouth of the lower half, all the control valves are opened, which is equivalent to a liquid level valve, so that the water pump 49 can pump sufficient liquid into the separation box 67, and when the liquid level detected by the liquid level gauge 52 is lower than the set height, the control valve and the water pump 49 are closed. One of the functions of such a design is to naturally separate a part of the gas at the beginning, and the second function is to make the amount of liquid pumped into the separation box 67 by the water pump 49 relatively constant, that is, to adapt to the area of ​​the above-mentioned hollow plate 68, so that these liquids can disperse and flow underground after passing through the above-mentioned guide holes, and then allow the gas in the meantime to escape freely upward after being separated, and then enter the exhaust pipe 24.

[0061] Finally, based on the above embodiments, the specific operation of the multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system is briefly explained as follows:

[0062] Step 1: Prepare the sample and place it in the sample chamber 20 - 5 , start the vacuum pump 8 and remove the gas molecules from the system, control the water pump 11 to pressurize the water in the water tank 10 into the sample chamber 20 - 5 , and then check the water tightness of the system according to the third pressure sensor 13 .

[0063] Step 2: After the system watertightness meets the industrial standard, the control central processor 5 adjusts the heating furnace 20-7 for conduction heating, the steam generator 4 for steam convection heating, the magnetron 20-14 for microwave radiation heating of the sample, or adjusts two or three of the heat sources to meet the heating sample.

[0064] Step 3: After the oil shale hydrocarbon generation process is completed, according to the data of the first temperature sensor 20-9 reaching 200°C, the central processor 5 is controlled to start the fan 23, and the thermal energy of the oil shale hydrocarbon generation device 20 is converted into electrical energy storage under the action of the expander 3, the generator 2 and the power storage device 1. At the same time, because the expander 3, the fan 23 and the gas storage tank 22 can also form a passage with the oil shale hydrocarbon generation device 20, when the necessary conditions are met, for example, when the data of the first temperature sensor 20-9 reaches 200°C again, the central processor 5 can start the fan 23 again to rotate in the corresponding direction, and repeat the cycle.

[0065] Step 4: Collect hydrocarbon gas from the gas collection device 14, and then collect hydrocarbon liquid from the liquid collection device 15, add solvent to the solvent storage tank 17, start the solvent pump 16 to clean the pipeline with solvent and collect the solution, and clean 3 to 4 times.

[0066] In the above specific operations, the central processor 5 can be controlled to regulate the heating furnace 20-7, the steam generator 4 and the magnetron 20-14 to heat the sample individually or in combination by three heat transfer methods: conduction, convection and radiation, so as to improve the heating efficiency of the sample, compare the optimal hydrocarbon generation, pore seepage and migration temperature ranges of the three heating methods, clarify the hydrocarbon generation mechanism under the three heating methods, and provide theoretical support for the exploitation of unconventional resources oil shale.

[0067] In addition, in step 3 of the implementation of the present invention, by controlling the reasonable operation of the fan 23, under the action of the expander 3, the generator 2 and the power storage device 1, the low-grade thermal energy of the oil shale hydrocarbon generation device 20 can be converted into electrical energy storage, thereby realizing the waste heat utilization of the system, improving energy utilization efficiency, and promoting technological innovation and sustainable development.

[0068] This article uses specific examples to illustrate the principles and implementation methods of the present invention. This article is only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system, characterized in that: The invention comprises a waste heat recovery pipeline, an oil and gas collection pipeline and an oil shale heating hydrocarbon generation pipeline, wherein the oil shale heating hydrocarbon generation pipeline comprises an oil shale hydrocarbon generation device (20), wherein the oil shale hydrocarbon generation device (20) comprises, from the outside to the inside, a device housing (20-6), a heating furnace (20-7), a steam generator (4) and a magnetron (20-14), wherein the heating furnace (20-7), the steam generator (4) and the magnetron (20-14) are capable of heating a sample in the form of at least one heat source under the control of a central processing unit (5); The waste heat recovery pipeline comprises an electric storage device (1), a generator (2), an expander (3), a fan (23), a gas storage tank (22), and a central processing unit (5); wherein: The oil shale hydrocarbon generation device (20) is connected to the expander (3), the generator (2) and the power storage device (1), and the fan (23) is connected to the central processor (5). Under the control of the central processor (5), when the oil shale hydrocarbon generation device (20) reaches a set temperature, the fan (23) is started to transport a hot gas flow, so that the expander (3) works on the generator (2) to generate electricity, so that the low-grade thermal energy of the oil shale hydrocarbon generation device (20) is converted into electrical energy and stored in the power storage device (1); The oil shale hydrocarbon generation device (20) is connected to an expander (3), a fan (23) and a gas storage tank (22) to form an air circuit and to deliver air to the oil shale hydrocarbon generation device (20), and the volume of the gas storage tank (22) is larger than the volume of the device shell (20-6) minus the volume of the heating furnace (20-7). The oil shale hydrocarbon generation device (20) is also connected to a gas-liquid separator (12) to output the gas and liquid generated by the reaction separately; The gas-liquid separator (12) comprises a separation box (67), a hollow plate (68) is fixedly installed horizontally at the upper left corner of the separation box (67), the hollow plate (68) has a plurality of vertically arranged flow guide holes, the right side of the hollow plate (68) is fixedly connected to a side sealing plate (69) perpendicular thereto, an exhaust pipe (24) is fixedly installed obliquely upward above the hollow plate (68), a portion of the exhaust pipe (24) located above the hollow plate (68) is provided with a plurality of air inlet holes (25), and an exhaust fan (26) is coaxially installed inside the higher end of the exhaust pipe (24) to pump gas into the airflow bin (27) at the top right side of the separation box (67) for escape; A fairing (42) is also installed on one side of the separation box (67) close to the side sealing plate (69). The fairing (42) allows the liquid falling through the hollow plate (68) to flow smoothly into the liquid storage bin (47) after being rectified by the fairing (42). The bottom of the liquid storage bin (47) has a drainage hole. The upper end of the drainage hole is covered with an isolation cover (43) with a plurality of perforations. A grid plate is fixed horizontally in the isolation cover (43). The right side plate (45) of the liquid storage bin (47) is vertically arranged so that the oil in the upper layer of the liquid can overflow from the top of the right side plate (45) and be discharged through the oil storage bin (46) on the right side of the liquid storage bin (47). The airflow bin (27) is arranged horizontally, one end of which is connected to the exhaust pipe (24), and the other end is provided with an air outlet pipe (32) at the top. A plurality of fog catching blocks (33) in contact with each other are arranged horizontally in the airflow bin (27). The fog catching blocks (33) can catch liquid droplets in the gas. A guide rod (28) is vertically fixed to the top of the fog catching block (33). A limit plate (30) is fixed to the top of the guide rod (28). A support spring (29) sleeved on the guide rod (28) is provided below the limit plate (30). In a non-working state, the support spring (29) limits the fog catching block (33) to a sliding hole (34) at the bottom of the airflow bin (27). When the fog catching block (33) catches enough liquid droplets and completely slides downward out of the airflow bin (27), a pair of hydraulic telescopic blocks (35) provided below the airflow bin (27) move closer to each other to squeeze the falling fog catching block (33) to exude liquid.

2. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 1 is characterized in that: The oil and gas collection pipeline comprises a first pressure sensor (7), a vacuum pump (8), a second pressure sensor (9), a water storage tank (10), a water adding pump (11), a third pressure sensor (13), a gas collection device (14), a liquid collection device (15), a solvent pump (16), a solvent storage tank (17), a hydrocarbon discharge container (18), a solenoid valve (19) and an oil shale hydrocarbon generation device (20); The oil shale hydrocarbon generation device (20) is connected to the electromagnetic valve (19), and the electromagnetic valve (19) is connected to the first pressure sensor (7) and the hydrocarbon exhaust container (18); the hydrocarbon exhaust container (18) is connected to the electromagnetic valve (19), the vacuum pump (8), the second pressure sensor (9), the water storage tank (10), the solvent storage tank (17) and the gas-liquid separator (12), and the oil and gas products in the hydrocarbon exhaust container (18) are transported to the gas-liquid separator (12) to separate hydrocarbon gas and liquid; The solvent storage tank (17) is connected to the solvent pump (16), the hydrocarbon exhaust container (18) and the gas-liquid separator (12); the gas-liquid separator (12) is connected to the hydrocarbon exhaust container (18), the gas collecting device (14) and the liquid collecting device (15); the gas collecting device (14) is connected to the gas-liquid separator (12) and the third pressure sensor (13); the liquid collecting device (15) is connected to the gas-liquid separator (12), and the hydrocarbon gas and liquid as well as the solution after cleaning with the organic solvent are collected under the monitoring of the third pressure sensor (13).

3. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 1, characterized in that: The oil shale heating hydrocarbon generation pipeline also includes a steam generator (4), a one-way valve (21), a central processing unit (5), a vacuum pump (8), a second pressure sensor (9), a water storage tank (10) and a water pump (11); The water storage tank (10) and the water adding pump (11) are connected to the oil shale hydrocarbon generation device (20) and are used to add deionized water to the sample to simulate the formation environment; the second pressure sensor (9) and the vacuum pump (8) are connected to the pipeline of the entire system and are used for water tightness testing of the system; the steam generator (4) is connected to the oil shale hydrocarbon generation device (20) via a steam input pipe (20-8), and the one-way valve (21) is located on the steam input pipe (20-8) and is used to transport steam to the sample.

4. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 1, characterized in that: The oil shale hydrocarbon generation device (20) comprises an air output pipe (20-1), an air input pipe (20-3), a hydraulic press lower cylinder (20-4), a sample chamber (20-5), and a hydraulic press upper cylinder (20-12); The air output pipe (20-1) is connected to the expander (3), the air input pipe (20-3) is connected to the air storage tank (22), the hydraulic press lower cylinder (20-4) and the hydraulic press upper cylinder (20-12) are connected to the sample chamber (20-5), and are used to apply pressure to the sample chamber (20-5) to simulate the formation environment, and the sample chamber (20-5) is used to install samples.

5. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 4 is characterized in that: The oil shale hydrocarbon generation device (20) further comprises a steam input pipe (20-8), a first temperature sensor (20-9), and a second temperature sensor (20-10); The steam input pipe (20-8) is connected to the sample chamber (20-5) and a steam generator (4), and the steam input pipe (20-8) is used to transport steam for convection heating of the sample; the first temperature sensor (20-9) is used to contact the sample chamber (20-5) and monitor the temperature of the sample chamber (20-5); the second temperature sensor (20-10) is located outside the heating furnace (20-7) in the device shell (20-6) and is used to monitor the temperature of the waste heat recovery pipeline; the heating furnace (20-7) is located outside the sample chamber (20-5) and is used for conduction heating of the sample.

6. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 5, characterized in that: The oil shale hydrocarbon generation device (20) also includes a filter conduit (20-13), a magnetron (20-14), a high-voltage diode (20-15), a transformer (20-16), a power line (20-17), and a hydrocarbon discharge pipeline (20-18); The filter tube (20-13), magnetron (20-14), high-voltage diode (20-15), transformer (20-16) and power line (20-17) are connected in sequence for heating the sample by microwave radiation, and the hydrocarbon discharge pipeline (20-18) is connected to the sample chamber (20-5) and the electromagnetic valve (19) for discharging oil and gas products.

7. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 1, characterized in that: A control button (31) is provided on the top of the separation box (67) below the limit plate (30), and the control button (31) is used to control the telescopic movement of the hydraulic telescopic block (35). When the corresponding fog catching block (33) falls, the limit plate (30) can press the control button (31), and the hydraulic telescopic blocks (35) move closer to each other. A gas-liquid separation plate (36) is also horizontally arranged below the gas flow bin (27), wherein the gas-liquid separation plate (36) has a groove (37) in the center, and the bottom of the groove (37) has a plurality of through holes (38) in an annular array; a driving gear plate (39) located below the groove (37) is also coaxially rotatably mounted at the bottom of the gas-liquid separation plate (36), and the driving gear plate (39) is also provided with a plurality of through holes (38) in an annular array; one side of the driving gear plate (39) is meshed with a driving gear (40) driven by a driving motor (41) through a gear assembly, and when the limit plate (30) presses the corresponding control button (31), the number of turns of the driving motor (41) causes the through holes (38) on the driving gear plate (39) and the through holes (38) on the groove (37) to change from an initial mutually staggered state to a mutually coaxially aligned connected state.

8. The multi-heat source oil shale hydrocarbon generation and waste heat utilization simulation system according to claim 1, characterized in that: A water pump (49) is installed on the left side of the separation box (67) near the top, and the inlet end of the water pump (49) is connected to the bottom of a plurality of annular cavities (48) connected in series. A gas branch pipe (50) is vertically fixed to the top of each annular cavity (48). A section of a gas main pipe (51) connected to the gas branch pipe (50) is coaxially inserted into the exhaust pipe (24) and passes over all the air inlet holes (25) and is close to the exhaust fan (26); A control valve is provided on the bottom discharge pipe section of the lower half of the annular cavity (48), and a liquid level gauge (52) is vertically provided inside the last lower half of the cavity filled with liquid. When the liquid level detected by the liquid level gauge (52) reaches the cavity opening of the lower half, all the control valves are opened to allow the water pump (49) to pump the liquid into the separation box (67), and when the liquid level detected by the liquid level gauge (52) is lower than the set height, the control valve and the water pump (49) are both closed.

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