High-pressure fluid treatment system and method for supercritical hydrothermal combustion

Abstract

The invention discloses a high-pressure fluid treatment system and method for supercritical hydrothermal combustion, and belongs to the technical field of high-pressure fluid treatment.The system comprises a discharge tank provided with a gas discharge part and a solid-liquid discharge part, the discharge tank is provided with a high-pressure pipeline and a low-pressure pipeline, and the high-pressure pipeline and the low-pressure pipeline are provided with a high-pressure system safety valve and a low-pressure system safety valve respectively; the system is provided with a controller; the discharge tank is further provided with a monitoring unit and a cooling system, and the monitoring unit can monitor the temperature and pressure of a plurality of positions of a system body in real time. The controller is used for controlling opening and closing of the high-pressure system safety valve and the low-pressure system safety valve, controlling opening and closing of the cooling water valve and controlling closing or opening of the gas discharging part and the solid-liquid discharging part according to the real-time temperature and pressure parameters. By integrating monitoring, control and cooling technologies, high-pressure fluid emergency discharge and safety guarantee are improved, and the safety and reliability of the high-temperature and high-pressure fluid discharge process are effectively improved, so that the stability of a supercritical hydrothermal combustion system is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-pressure fluid processing, and in particular relates to a high-pressure fluid processing system and method for supercritical hydrothermal combustion. Background Art

[0002] With increasing environmental protection requirements and energy demands, supercritical hydrothermal combustion (SCHC) technology is becoming an important tool for waste treatment and energy recovery. By heating water to a supercritical state, SCHC achieves efficient conversion and harmless treatment of organic matter. SCHC also produces multi-component thermal fluids, which can be used to improve oil recovery efficiency and facilitate the extraction of oil and gas resources.

[0003] However, during the supercritical hydrothermal combustion process, due to the changes in fluid properties under high pressure and high temperature environments, problems such as excessive pressure and abnormal temperature are prone to occur, which poses a challenge to the safe operation of the equipment. In the existing technology, many high-pressure fluid processing systems lack effective emergency discharge and temperature control mechanisms, resulting in insufficient safety of the fluid discharge process in the event of a failure or abnormality, which may cause equipment damage, environmental pollution or safety accidents. In addition, traditional cooling systems are often unable to respond in a timely manner when faced with sudden high-pressure fluid discharges, increasing the safety risks of the system. Therefore, in summary, the current high-pressure fluid processing system lacks an effective control mechanism, and the cooling system is unable to respond in a timely manner when a sudden high-pressure fluid discharge occurs, resulting in insufficient system safety in the event of a failure or abnormality, which may cause equipment damage, environmental pollution or even safety accidents. Summary of the Invention

[0004] The present invention provides a high-pressure fluid treatment system and method for supercritical hydrothermal combustion, aiming to solve the problem that the current high-pressure fluid treatment system lacks an effective control mechanism and the cooling system cannot respond in time when a sudden high-pressure fluid is released, resulting in insufficient system safety in the event of a malfunction or abnormality, which may cause equipment damage, environmental pollution, and even safety accidents.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a high-pressure fluid processing system for supercritical hydrothermal combustion, comprising a system body, the system body including a discharge tank with a gas discharge portion and a solid-liquid discharge portion, the discharge tank being equipped with a high-pressure pipeline and a low-pressure pipeline capable of receiving fluid, the high-pressure pipeline and the low-pressure pipeline being equipped with a high-pressure system safety valve and a low-pressure system safety valve, respectively, and the system body being equipped with a controller; wherein: The discharge tank is also equipped with a monitoring unit and a cooling system. The monitoring unit can monitor the temperature and pressure of several locations on the system in real time and upload the real-time temperature and pressure parameters to the controller. The cooling system includes a cooling water inlet unit connected to the discharge tank via a cooling water pipeline, and a cooling water valve is installed on the cooling water pipeline. The controller is used to control the opening and closing of the high-pressure system safety valve and the low-pressure system safety valve, the opening and closing of the cooling water valve, and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters of several locations of the system body.

[0006] In some embodiments, the cooling water inlet unit includes a cooling water tank and a cooling pump, the cooling water tank and the cooling pump form a cooling water loop, and a back pressure valve is provided on the cooling water loop to maintain the pressure of the cooling water.

[0007] In some embodiments, the monitoring unit includes a pressure monitoring device, which is used to detect the pressure in the discharge tank in real time. The discharge tank is provided with a drain pipe and is equipped with a safety valve. When the pressure in the discharge tank exceeds a preset pressure value, the controller controls the safety valve to open and exhaust to ensure that the pressure in the discharge tank is within a preset safety value.

[0008] In some embodiments, the monitoring unit further includes a first temperature device, a second temperature device, and a third temperature device, which are used to monitor the temperatures of the high-pressure pipeline, the low-pressure pipeline, and the inside of the discharge tank, respectively. As long as the temperature of any one of them exceeds a first preset value, the controller controls the cooling system to start so as to control the temperature inside the discharge tank.

[0009] Furthermore, the monitoring unit also includes a liquid level gauge, which is used to monitor the liquid level height of the liquid in the discharge tank. The liquid level gauge is linked to the cooling system. When the liquid level height of the liquid in the discharge tank exceeds the preset height value, the controller controls the cooling system to stop running and controls the solid-liquid discharge part to open.

[0010] Furthermore, the monitoring unit also includes a fourth temperature device, which is arranged in the discharge tank near the solid-liquid discharge part. When the temperature monitored by the fourth temperature device is lower than the second preset value, the controller controls the solid-liquid discharge part to close or open.

[0011] Furthermore, the controller: controlling the solid-liquid discharge part to open according to the monitoring of the liquid level meter is more preferred than controlling the solid-liquid discharge part to open according to the monitoring of the fourth temperature device.

[0012] In some embodiments, the gas discharge portion includes a blowout preventer separator connected to a discharge tank via an exhaust line, and the exhaust line is provided with a gas discharge valve and a wire mesh demister.

[0013] In some embodiments, the solid-liquid discharge portion includes a solid discharge pipeline and a liquid discharge pipeline. The solid discharge pipeline is configured with a solid discharge valve, and the liquid discharge pipeline is configured with a liquid discharge valve.

[0014] The present invention also provides a high-pressure fluid processing method for supercritical hydrothermal combustion, which is based on a high-pressure fluid processing system for supercritical hydrothermal combustion and includes the following steps: S1. Connect and check the integrity of the high-pressure fluid handling system; S2. When the high-pressure pipeline and the low-pressure pipeline introduce fluid into the discharge tank, the monitoring unit monitors the temperature and pressure of several positions of the system body in real time and uploads the real-time temperature and pressure parameters to the controller; the controller is used to control the switching of the high-pressure system safety valve and the low-pressure system safety valve, the switching of the cooling water valve, and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters of several positions of the system body, so that the fluid in the discharge tank is within the preset values ​​of temperature, pressure and liquid level.

[0015] The present invention provides a high-pressure fluid processing system and method for supercritical hydrothermal combustion, which have the following beneficial effects.

[0016] The present invention relates to a high-pressure fluid processing system for supercritical hydrothermal combustion. The system is configured with a controller for the discharge tank, a monitoring unit and a cooling system that cooperate with the controller, so that the controller can control the valve, gas discharge part, solid-liquid discharge part and cooling system according to the real-time monitoring of the monitoring unit, thereby reasonably achieving effective discharge and safety of the high-pressure fluid. The present invention can quickly discharge the fluid when an abnormality occurs in the high-pressure fluid system, preventing the equipment from being damaged due to excessive pressure, thereby improving the safety of the entire system; the high-pressure pipeline enters at the bottom of the discharge tank and the low-pressure pipeline enters at the top, which helps to reasonably distribute the fluid in the discharge tank, avoid local excessive pressure or fluid impact, and further ensure the stable operation of the system; the provision of the gas discharge valve and the safety valve enables the rapid discharge of gas and fluid to a safe area in emergency situations such as overpressure, preventing damage to the system and enhancing the emergency handling capability of the system; and the provision of the solid discharge valve and the liquid discharge valve can achieve effective separation and discharge of solid and liquid fluids in the discharge tank, extending the service life of the equipment. The present invention effectively improves the safety and reliability of the high-temperature and high-pressure fluid discharge process by optimizing the equipment configuration and control mechanism of cooling and discharge, and has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 The diagram is a structural diagram of a high-pressure fluid processing system and method for supercritical hydrothermal combustion according to the present invention.

[0019] Among them, 1 is a cooling water tank, 2 is a cooling pump, 3 is a back pressure valve, 4 is a cooling water valve, 5 is a low-pressure system safety valve, 6 is a high-pressure system safety valve, 7 is a gas discharge valve, 8 is a safety valve, 9 is a discharge tank, 10 is a solid discharge valve, 11 is a liquid discharge valve, 12 is a pressure monitoring device, 13 is a liquid level gauge, 14 is a first temperature device, 15 is a second temperature device, 16 is a third temperature device, 17 is a fourth temperature device, 18 is a blowout preventer separator, and 19 is a wire mesh demister. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0022] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0023] It should be noted that the devices and methods disclosed in the embodiments of this document may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of the devices, methods, and computer program products according to the various embodiments of this document. In this regard, each box in the flowchart or block diagram may represent a module, program, or portion of code, wherein the module, program segment, or portion of code contains one or more executable instructions for implementing a specified logical function, and the module, program segment, or portion of code contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes may actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

[0024] In addition, the functional modules in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part. Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as limiting the present invention. After reading the above content, various modifications and substitutions of the present invention will be apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

[0025] How to improve the emergency release and safety assurance of high-pressure fluids, achieve safe handling of high-pressure fluids through integrated monitoring, control and cooling technologies, to ensure the stability and safety of supercritical hydrothermal combustion systems, while maximizing the utilization of the generated multi-component thermal fluids and promoting their application in the fields of environmental protection and energy.

[0026] like Figure 1 As shown, the present invention provides a high-pressure fluid processing system for supercritical hydrothermal combustion, including a system body, the system body including a discharge tank 9 with a gas discharge portion and a solid-liquid discharge portion, the discharge tank 9 is equipped with a high-pressure pipeline and a low-pressure pipeline capable of receiving fluid, the high-pressure pipeline and the low-pressure pipeline are respectively equipped with a high-pressure system safety valve 6 and a low-pressure system safety valve 5, and the system body is equipped with a controller; wherein: The discharge tank 9 is also equipped with a monitoring unit and a cooling system. The monitoring unit can monitor the temperature and pressure of several locations of the system body in real time and upload the real-time temperature and pressure parameters to the controller; the cooling system includes a cooling water inlet unit connected to the discharge tank 9 through a cooling water pipeline, and a cooling water valve 4 is provided on the cooling water pipeline; The controller is used to control the opening and closing of the high-pressure system safety valve 6 and the low-pressure system safety valve 5, the opening and closing of the cooling water valve 4, and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters of several positions of the system body.

[0027] The present invention is a high-pressure fluid processing system for supercritical hydrothermal combustion. It is aimed at high-pressure fluid processing, especially for emergency discharge and safety assurance of high-pressure fluid in the supercritical hydrothermal combustion process. The high-pressure pipeline, low-pressure pipeline, gas discharge part and solid-liquid discharge part are integrated through the discharge tank 9 to achieve unified reception and diversion processing of high-temperature and high-pressure fluids, reducing system complexity and fault points. The controller dynamically controls the high-pressure system safety valve 6, the low-pressure system safety valve 5, the cooling water valve 4, the gas discharge part and the solid-liquid discharge part based on the real-time temperature and pressure data of the monitoring unit, achieving automatic, precise and stable control of discharge, cooling and discharge. The cooling system and the monitoring unit work together to automatically trigger the protection mechanism in the event of overtemperature or overpressure, ensuring rapid response under sudden working conditions and preventing equipment from being damaged by over-limit. The present invention improves the safety hazards and control difficulties existing in the high-pressure fluid processing process in the prior art through the design, control and monitoring of the high-pressure fluid system, thereby improving the safety and reliability of the supercritical hydrothermal combustion system.

[0028] In certain operating conditions, the cooling water inlet unit of the present invention includes a cooling water tank 1 and a cooling pump 2, which form a cooling water circuit. A back-pressure valve 3 is provided in the cooling water circuit to maintain the pressure of the cooling water. The back-pressure valve 3 of the present invention continuously maintains pressure in the cooling water circuit, ensuring that the pipeline of the cooling pump 2 is pressurized. This allows the cooling water to be instantly injected into the discharge tank 9 upon triggering a command, thereby optimizing the problem of delayed water injection in the system.

[0029] The monitoring unit of the present invention includes a pressure monitoring device 12, which is used to monitor the pressure within the discharge tank 9 in real time. The discharge tank 9 is equipped with a drain pipe and a safety valve 8. When the pressure within the discharge tank 9 exceeds a preset pressure value, a controller controls the safety valve 8 to open and vent the pressure, thereby ensuring that the pressure within the discharge tank 9 is within the preset safety value. The pressure monitoring device 12 of the present invention is linked to the safety valve 8, automatically opening and venting the pressure when the discharge tank 9 is overpressured, preventing the tank from being overloaded. The pressure relief threshold is precisely controlled by the preset pressure value to avoid false triggering.

[0030] Furthermore, the monitoring unit of the present invention also includes a first temperature device 14, a second temperature device 15, and a third temperature device 16. The first temperature device 14, the second temperature device 15, and the third temperature device 16 are respectively used to monitor the temperature inside the high-pressure pipeline, the low-pressure pipeline, and the discharge tank 9. As long as the temperature of any of these locations exceeds a first preset value, the controller controls the cooling system to activate in order to control the temperature inside the discharge tank 9. The present invention covers the key temperature zones inside the high-pressure pipeline, the low-pressure pipeline, and the discharge tank 9 through temperature detection. If any node exceeds the temperature, the cooling system is triggered, eliminating the risk of delayed cooling monitoring.

[0031] Furthermore, the monitoring unit of the present invention also includes a liquid level gauge 13, which is used to monitor the liquid level in the discharge tank 9. Liquid level gauge 13 is linked to the cooling system. When the liquid level in the discharge tank 9 exceeds a preset height, a controller controls the cooling system to stop operation and opens the solid-liquid drain. Liquid level gauge 13 of the present invention is interlocked with the cooling system and the solid-liquid drain: when the liquid level exceeds a certain level, the pump is automatically stopped and the drain is opened, preventing excessive cooling water injection that could lead to tank overflow and prevent accidents such as high-temperature fluid leakage.

[0032] In addition, the monitoring unit of the present invention also includes a fourth temperature device 17, which is arranged in the discharge tank 9 near the solid-liquid discharge part. When the temperature monitored by the fourth temperature device 17 is lower than the second preset value, the controller controls the solid-liquid discharge part to be closed or opened. The fourth temperature device 17 of the present invention monitors the temperature of the fluid at the discharge port and allows the solid-liquid discharge part to be opened only when the liquid in the discharge tank 9 is at a low temperature, ensuring that the discharged fluid is within a safe temperature range and preventing the high-temperature fluid from causing thermal shock to downstream equipment. It should be noted that the controller of the present invention is set so that the liquid level exceeding the limit takes precedence over the temperature condition to trigger the discharge. In emergency conditions such as excessive cooling water, the liquid is drained and the pressure is reduced first to avoid the risk of the tank overflowing due to waiting for cooling.

[0033] The gas discharge section of the present invention includes a blowout preventer separator 18 connected to the discharge tank 9 via an exhaust pipeline. The exhaust pipeline is equipped with a gas discharge valve 7 and a wire mesh demister 19. The combination of the gas discharge valve 7 and the wire mesh demister 19 effectively intercepts liquid droplets and solid particles entrained in the gas, preventing corrosive or high-temperature liquids from entering the blowout preventer separator and ensuring the safety of the gas discharge pipeline. Furthermore, the gas discharge section is configured to be normally open, collaboratively controlling the pressure in the discharge tank 9.

[0034] The solid-liquid discharge section of the present invention includes a solid discharge pipeline and a liquid discharge pipeline. The solid discharge pipeline is equipped with a solid discharge valve 10, and the liquid discharge pipeline is equipped with a liquid discharge valve 11. The present invention achieves the separation and discharge of solid residue and cooled liquid through the provision of solid discharge valve 10 and liquid discharge valve 11, avoiding mixed discharge and clogging the pipeline, while facilitating subsequent classification and processing.

[0035] The present invention also provides a high-pressure fluid processing method for supercritical hydrothermal combustion, which is based on a high-pressure fluid processing system for supercritical hydrothermal combustion and includes the following steps: S1. Connect and check the integrity of the high-pressure fluid handling system; S2. When the high-pressure pipeline and the low-pressure pipeline introduce fluid into the discharge tank 9, the monitoring unit monitors the temperature and pressure of several positions of the system body in real time and uploads the real-time temperature and pressure parameters to the controller; the controller is used to control the switching of the high-pressure system safety valve 6 and the low-pressure system safety valve 5, the switching of the cooling water valve 4, and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters of the several positions of the system body, so that the fluid in the discharge tank 9 is within the preset values ​​of temperature, pressure and liquid level.

[0036] In some embodiments, the present invention is a high-pressure fluid processing system for supercritical hydrothermal combustion, and a discharge tank 9 is provided, which receives the fluid discharged by the low-pressure system safety valve 5 and the high-pressure system safety valve 6; the high-pressure system safety valve 6 is connected to the high-pressure pipeline, which enters the discharge tank at the bottom of the discharge tank 9; the low-pressure system safety valve 5 is connected to the low-pressure pipeline, which enters the discharge tank at the top of the discharge tank 9; a gas discharge valve 7 is provided on the upper part of the discharge tank 9, and the gas is discharged to the blowout preventer separator 18 after being filtered by the wire mesh demister 19; a safety valve 8 is provided on the discharge tank 9, which discharges the fluid into the blowout separator 18 when overpressure occurs; a solid discharge valve 10 and a liquid discharge valve 11 are provided at the lower part of the discharge tank 9, which are used to separate and discharge the solid and liquid fluids in the discharge tank 9.

[0037] The discharge tank 9 of the present invention is equipped with the following monitoring and control devices: a pressure monitoring device 12 for real-time monitoring of the pressure in the discharge tank 9; a first temperature device 14, a second temperature device 15 and a third temperature device 16 for monitoring the temperature of the high-pressure pipeline, the low-pressure pipeline and the inside of the discharge tank 9; a liquid level gauge 13 for monitoring the liquid level of the fluid in the discharge tank 9; the liquid level gauge 13 is interlocked with the cooling pump 2. When the liquid level in the discharge tank 9 is too high, the cooling pump 2 is stopped and the external discharge is started.

[0038] The present invention's discharge tank 9 is interlocked with the cooling system, including the following: When any of the first, second, and third temperature sensors 14, 15, and 16 detects a temperature exceeding 80°C, the cooling pump 2 activates, injecting cooling water from the cooling water tank 1 through the cooling water valve 4 into the discharge tank 9 for cooling. A backpressure valve 3 and a cooling water circulation valve 4 are installed in the cooling water circuit to ensure that the cooling water circuit maintains pressure when there is no cooling demand, and to enable rapid, pressurized injection of cooling water into the discharge tank 9 when needed. Furthermore, the liquid discharge valve 11 is interlocked with the fourth temperature sensor 17, allowing discharge only when the fluid temperature in the discharge tank 9 is below 60°C. The discharge control of the liquid level gauge 13 takes precedence over the interlocking control of the liquid discharge valve 11 and the fourth temperature sensor 17.

[0039] The discharge tank 9 of the present invention is connected to the blowout preventer 18 via the gas discharge valve 7 and is equipped with a wire mesh demister 19 to prevent liquid from being discharged with the gas, ensuring efficient and safe gas-liquid separation. Furthermore, in some embodiments, the cooling system of the present invention can achieve rapid cooling of the high-temperature fluid within the discharge tank 9 by optimizing the cooling water injection structure and the fluid contact area design.

[0040] Specifically, the high-pressure fluid processing system for supercritical hydrothermal combustion of the present invention begins with a discharge tank 9 receiving discharge fluid from both the low-pressure system safety valve 5 and the high-pressure system safety valve 6. The high-pressure system safety valve 6 is connected to a high-pressure pipeline, with fluid entering the discharge tank from the bottom of the pipeline. The low-pressure system safety valve 5 is connected to a low-pressure pipeline, with fluid entering the discharge tank 9 from the top of the pipeline. The design of the discharge tank 9 ensures that high-pressure and low-pressure fluids enter the tank at different locations, achieving optimal fluid distribution.

[0041] Specifically: the pressure monitoring device 12 is used to detect the pressure inside the discharge tank 9 in real time to ensure that the pressure of the discharge tank 9 is within a safe range; the first temperature device 14, the second temperature device 15 and the third temperature device 16 are used to monitor the temperature inside the high-pressure pipeline, the low-pressure pipeline and the discharge tank 9 respectively. When any one of the first temperature device 14, the second temperature device 15 and the third temperature device 16 monitors a temperature exceeding 80°C, the cooling pump 2 is started and the system will start the cooling mechanism to cool down; the liquid level meter 13 is linked with the cooling pump 2 to avoid the danger caused by excessively high liquid level in the discharge tank 9.

[0042] The cooling system cools the fluid in the discharge tank 9 via a cooling water tank 1, cooling pump 2, and cooling water valve 4. The specific operation is as follows: When the first, second, and third temperature sensors 14, 15, and 16 detect that the fluid temperature exceeds 80°C, cooling pump 2 activates, and cooling water is injected into the discharge tank 9 through cooling water valve 4 for cooling. The cooling water injection pattern and flow rate are dynamically adjusted based on the temperature changes in the discharge tank 9 to ensure rapid cooling. A back-pressure valve 3 (to ensure the pipeline after the pump is pressurized) and a cooling water circulation valve 4 are installed in the cooling water circuit to ensure that the cooling water circuit maintains pressure when there is no cooling demand, and to enable rapid injection of pressurized cooling water into the discharge tank 9 when required.

[0043] After the fluid in discharge tank 9 cools to a safe temperature, liquid discharge valve 11 and solid discharge valve 10 are controlled in conjunction to discharge the fluid. Liquid discharge valve 11 is interlocked with the fourth temperature control device, ensuring that the liquid is discharged only when the temperature of the fluid in discharge tank 9 is below 60°C. Solid discharge valve 10 is used to discharge the solid matter separated from discharge tank 9, ensuring the safe handling of the fluid in discharge tank 9.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the specification and described above. Any equivalent changes, modifications and evolutions made by using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A high-pressure fluid processing system for supercritical hydrothermal combustion, characterized in that: The system comprises a main body, the main body comprising a discharge tank (9) provided with a gas discharge portion and a solid-liquid discharge portion, the discharge tank (9) being provided with a high-pressure pipeline and a low-pressure pipeline capable of receiving fluid, the high-pressure pipeline and the low-pressure pipeline being provided with a high-pressure system safety valve (6) and a low-pressure system safety valve (5), respectively, and the main body being provided with a controller; wherein: The discharge tank (9) is further provided with a monitoring unit and a cooling system. The monitoring unit is capable of monitoring the temperature and pressure of several positions of the system body in real time and uploading the real-time temperature and pressure parameters to the controller. The cooling system includes a cooling water inlet unit connected to the discharge tank (9) via a cooling water pipeline. A cooling water valve (4) is provided on the cooling water pipeline. The controller is used to control the opening and closing of the high-pressure system safety valve (6) and the low-pressure system safety valve (5), the opening and closing of the cooling water valve (4), and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters at several positions of the system body.

2. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 1, characterized in that: The cooling water inlet unit comprises a cooling water tank (1) and a cooling pump (2), wherein the cooling water tank (1) and the cooling pump (2) form a cooling water circuit, and a back pressure valve (3) is provided on the cooling water circuit, and the back pressure valve (3) is used to maintain the pressure of the cooling water.

3. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 1, characterized in that: The monitoring unit includes a pressure monitoring device (12), and the pressure monitoring device (12) is used to detect the pressure in the discharge tank (9) in real time. The discharge tank (9) is provided with an exhaust pipe and equipped with a safety valve (8). When the pressure in the discharge tank (9) exceeds a preset pressure value, the controller controls the safety valve (8) to open and exhaust the gas, so as to ensure that the pressure in the discharge tank (9) is within a preset safety value.

4. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 1, characterized in that: The monitoring unit further comprises a first temperature device (14), a second temperature device (15) and a third temperature device (16), wherein the first temperature device (14), the second temperature device (15) and the third temperature device (16) are respectively used to monitor the temperature inside the high-pressure pipeline, the low-pressure pipeline and the discharge tank (9), and as long as the temperature of any one of them exceeds a first preset value, the controller controls the cooling system to start so as to control the temperature inside the discharge tank (9).

5. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 4, characterized in that: The monitoring unit further comprises a liquid level meter (13), the liquid level meter (13) being used to monitor the liquid level height of the liquid in the discharge tank (9), the liquid level meter (13) being linked to the cooling system, and when the liquid level height of the liquid in the discharge tank (9) exceeds a preset height value, the controller controls the cooling system to stop running and controls the solid-liquid discharge part to open.

6. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 5, characterized in that: The monitoring unit further comprises a fourth temperature device (17), which is arranged in the discharge tank (9) near the solid-liquid discharge portion. When the temperature monitored by the fourth temperature device (17) is lower than a second preset value, the controller controls the solid-liquid discharge portion to be closed or opened.

7. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 6, characterized in that: The controller: controlling the solid-liquid discharge portion to open according to the monitoring of the liquid level meter (13) is at a higher priority level than controlling the solid-liquid discharge portion to open according to the monitoring of the fourth temperature device (17).

8. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 1, characterized in that: The gas discharge portion comprises a blowout preventer separator (18) connected to a discharge tank (9) via an exhaust pipeline, wherein the exhaust pipeline is provided with a gas discharge valve (7) and a wire mesh demister (19).

9. The high-pressure fluid processing system for supercritical hydrothermal combustion according to claim 1, characterized in that: The solid-liquid discharge part comprises a solid discharge pipeline and a liquid discharge pipeline. The solid discharge pipeline is provided with a solid discharge valve (10), and the liquid discharge pipeline is provided with a liquid discharge valve (11).

10. A high-pressure fluid processing method for supercritical hydrothermal combustion, characterized in that: The method is carried out based on the high-pressure fluid processing system for supercritical hydrothermal combustion according to any one of claims 1 to 9, and comprises the following steps: S1. Connect and check the integrity of the high-pressure fluid handling system; S2. When the high-pressure pipeline and the low-pressure pipeline introduce fluid into the discharge tank (9), the monitoring unit monitors the temperature and pressure of several positions of the system body in real time, and uploads the real-time temperature and pressure parameters to the controller; the controller is used to control the switching of the high-pressure system safety valve (6) and the low-pressure system safety valve (5), the switching of the cooling water valve (4), and the closing or opening of the gas discharge part and the solid-liquid discharge part according to the real-time temperature and pressure parameters of several positions of the system body, so that the fluid in the discharge tank (9) is within the preset values ​​of temperature, pressure and liquid level.

Images