A high-temperature and high-pressure reaction kettle for extracting high-temperature hydrothermal fluid in situ and application thereof

Abstract

The application provides a high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid, which comprises a reaction kettle body and a reaction kettle cover plate, the reaction kettle cover plate is used for sealing the reaction kettle body to form a reaction kettle cavity; the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises at least one flexible reaction cavity with heat conduction, the flexible reaction cavity is arranged in the reaction kettle body, and the flexible reaction cavity is in a sealed state; a first conduit penetrates the reaction kettle cover plate and the flexible reaction cavity from outside to inside in sequence so that one end of the first conduit is in communication with the flexible reaction cavity, and the other end of the first conduit is in communication with a collector. The application further provides application of the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid. The high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid can extract hydrothermal fluid under high-temperature and high-pressure conditions in-situ.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geochemistry, in particular to an experimental geochemical reaction device, more particularly to a high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid and application. BACKGROUND

[0002] As one of the important constituent materials on the earth, hydrothermal fluid plays a crucial role in various layers of the earth's surface and interior. Compared with the solid rock and mineral matter occupying the main part of the earth's interior, fluid has higher physical and chemical activity and is an important medium for the transmission of matter and energy in the earth's interior. Like human blood, fluid is exchanged and circulated between different layers of the earth through geological processes such as subduction and magmatic activity, which has an important influence on the element migration and circulation in the earth's interior.

[0003] In the fields of earth science and environmental science, it is often necessary to explore how elements migrate in hydrothermal fluid and how minerals or rocks react with hydrothermal fluid through high-temperature and high-pressure experiments, which is of great significance to the study of the circulation of matter in the earth's system. However, since hydrothermal fluid is mainly a liquid material in the form of aqueous solution, it has the characteristics of strong flowability, strong volatility, low viscosity and difficulty in quenching under high-temperature and high-pressure conditions, which has high requirements for high-temperature and high-pressure experimental devices. The existing devices are difficult to carry out high-temperature and high-pressure experiments of hydrothermal fluid.

[0004] In addition, quenching after the experiment of the existing device will cause the precipitation of mineral matter in the reaction fluid, making it difficult to analyze the chemical composition of the hydrothermal fluid and unable to simultaneously realize real-time in-situ observation and quantitative testing of the physical and chemical properties of the experimental material. SUMMARY

[0005] Therefore, the present application provides a high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid and application, which can simultaneously complete high-temperature and high-pressure experiments and in-situ extraction of hydrothermal fluid under high-temperature and high-pressure conditions, accurately control the sample quantity of related hydrothermal experiments, and improve the testing accuracy.

[0006] In the first aspect, the present application provides a high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid, comprising a reaction kettle body and a reaction kettle cover plate, the reaction kettle cover plate being used to seal the reaction kettle body to form a reaction kettle cavity;

[0007] The high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises at least one flexible reaction cavity with heat conduction, which is arranged in the reaction kettle body and is in a sealed state.

[0008] The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises at least one first conduit resistant to high temperature and high pressure and at least one collector, the collector is arranged outside the reactor cavity, and the first conduit successively penetrates the reactor cover plate and the flexible reaction cavity from outside to inside, so that one end of the first conduit is in communication with the flexible reaction cavity, and the other end of the first conduit is in communication with the collector.

[0009] In the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid, the reactor cavity is assembled by the reactor body and the reactor cover plate, and the flexible reaction cavity with heat conduction is further arranged in the reactor cavity. Because of the heat conduction of the flexible reaction cavity, the temperature inside the flexible reaction cavity is consistent with the temperature inside the reactor cavity. Because the flexible reaction cavity is made of flexible material, it has the function of conducting pressure. In actual use, the pressure inside the flexible reaction cavity is consistent with the pressure inside the reactor cavity. Therefore, the temperature and pressure inside the flexible reaction cavity can be controlled by controlling the temperature and pressure of the reactor, so as to meet the high-temperature and high-pressure conditions required by geochemical reactions. More importantly, the flexible reaction cavity has good ductility and compressibility, is more suitable for transmitting pressure, and is easier to restore the shape after reaction, so it is suitable as a reaction container under high-temperature and high-pressure conditions.

[0010] The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises at least one first conduit resistant to high temperature and high pressure and at least one collector, the collector is arranged outside the reactor cavity, and the first conduit successively penetrates the reactor cover plate and the flexible reaction cavity from outside to inside, so that one end of the first conduit is in communication with the flexible reaction cavity, and the other end of the first conduit is in communication with the collector. In the process of high-temperature and high-pressure geochemical reaction, the hydrothermal fluid in the flexible reaction cavity can be directly output to the collector through the first conduit by controlling the pressure for subsequent detection and analysis, realizing in-situ extraction of hydrothermal fluid under high-temperature and high-pressure conditions, which can accurately control the sample size of related hydrothermal experiments and improve the test accuracy. Through the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid, the hydrothermal fluid can be reacted under the condition of 250-550 DEG C and 20-55 MPa, and the physical and chemical properties can be observed in-situ, and the chemical composition can be analyzed after sampling. In addition, by arranging the inner and outer double-cavity structure, the reaction liquid can prevent the reaction vessel from being contaminated, and the sample loading capacity is large.

[0011] Preferably, the flexible reaction cavity comprises a flexible metal sleeve, an upper clamping plate and a lower clamping plate, the flexible metal sleeve is provided with an annular flange at the port, the upper clamping plate is provided with a first through hole, and the lower clamping plate is provided with a second through hole.

[0012] When the flexible reaction chamber is assembled, the upper clamping plate abuts one side of the annular flange, the lower clamping plate abuts the other side of the annular flange, and the first conduit passes through the first through hole and the second through hole in sequence to realize the communication between the first conduit and the flexible reaction chamber. Thus, the flexible metal sleeve is sleeved by the lower clamping plate and abuts the lower end of the annular flange, and the upper clamping plate abuts the upper end of the annular flange, so as to realize the sealing of the flexible metal sleeve to form the flexible reaction chamber. In addition, the first conduit passes through the first through hole and the second through hole in sequence from top to bottom, and is inserted into the flexible metal sleeve through the port of the flexible metal sleeve, so as to realize the communication between the flexible reaction chamber and the outside through the first conduit, and facilitate the in-situ extraction of the high-temperature hydrothermal fluid from the flexible reaction chamber.

[0013] Preferably, the annular flange, the upper clamping plate and the lower clamping plate are provided with locking holes at corresponding positions, and when the flexible reaction chamber is assembled, a screw rod passes through the locking holes of the upper clamping plate, the annular flange and the lower clamping plate in sequence to seal the flexible metal sleeve. Thus, the upper clamping plate and the lower clamping plate clamp the upper and lower surfaces of the annular flange from the upper and lower ends to seal the port of the flexible metal sleeve. The annular flange, the upper clamping plate and the lower clamping plate are provided with locking holes at corresponding positions, and the screw rod passes through the locking holes of the annular flange, the upper clamping plate and the lower clamping plate in sequence, and the annular flange is tightly pressed by the upper clamping plate and the lower clamping plate, so as to better realize the sealing of the flexible reaction chamber.

[0014] Preferably, the flexible metal sleeve is a flexible reaction chamber made of inert metal material. The inert metal material has good acid and alkali corrosion resistance and ductility, and is therefore more suitable for the high-temperature and high-pressure reaction of hydrothermal fluid with different chemical compositions. Such chemical stability makes it very suitable for making reaction chambers to carry out chemical reaction experiments, and it can be repeatedly used by being cleaned with strong acid at room temperature.

[0015] Preferably, the flexible metal sleeve is a flexible reaction chamber made of gold, silver, copper or platinum, and the upper clamping plate, the lower clamping plate and the first conduit are all made of titanium material and are subjected to high-temperature annealing treatment. Gold, silver, copper or platinum all have good acid and alkali corrosion resistance and ductility, and almost do not react with various acids and alkalis except aqua regia under certain temperature and pressure conditions. Such chemical stability makes it very suitable for making reaction chambers to carry out chemical reaction experiments, and it can be repeatedly used by being cleaned with strong acid at room temperature. More importantly, gold, silver, copper or platinum all have good ductility and compressibility, and are more suitable for transmitting pressure and restoring the shape after reaction, and therefore are suitable for being used as reaction containers under high-temperature and high-pressure conditions. The upper clamping plate, the lower clamping plate and the first conduit are all made of titanium material and are subjected to high-temperature annealing treatment, and the surface of titanium is oxidized to form an inert acid and alkali resistant oxide layer after high-temperature annealing.

[0016] More preferably, the flexible metal sleeve is provided in the shape of a cylinder, and the thickness of the flexible metal sleeve is 0.2-1 mm.

[0017] Preferably, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a reactor clamp, the reactor clamp comprises a groove for accommodating the reactor body port and the reactor cover plate edge, and screw holes are arranged on the reactor clamp and penetrate from the side of the reactor clamp to the groove.

[0018] When the reactor cavity is assembled, the reactor cover plate edge abuts against the reactor body port, and the reactor cover plate edge and the reactor body port are both embedded in the groove of the reactor clamp, and the screw passes through the screw hole to abut against the reactor body or the reactor cover plate. Thus, the reactor cover plate and the reactor body can be better clamped by arranging the reactor clamp, so as to prevent the reactor from being not tightly sealed under high-temperature and high-pressure conditions and improve the safety of the reactor. By arranging the screw hole, the positions of the reactor cover plate and the reactor body can be adjusted, and when the positions are aligned, the screw is adjusted to further press the reactor.

[0019] Preferably, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a sealing gasket, which is arranged between the reactor cover plate and the reactor body.

[0020] When the reactor cavity is assembled, the reactor cover plate edge abuts against one side of the sealing gasket, and the reactor body port abuts against the other side of the sealing gasket. Thus, the reactor cover plate and the reactor body can be better clamped by arranging the sealing gasket, so as to prevent the reactor from being not tightly sealed under high-temperature and high-pressure conditions.

[0021] More preferably, the sealing gasket is a red copper sealing gasket.

[0022] Preferably, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a temperature control system, the temperature control system comprises an annular heating furnace and a thermocouple, and the annular heating furnace is arranged to surround the reactor body for heating the reactor body.

[0023] The thermocouple is arranged in the reactor body for detecting the temperature of the reactor body. Thus, by arranging the annular heating furnace and the thermocouple, the temperature of the reactor can be controlled in real time.

[0024] Preferably, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a pressure control system, the pressure control system comprises an air compressor, a pressure gauge and a second conduit, one end of the second conduit is connected to the air compressor, and the other end of the second conduit is in communication with the reactor cavity.

[0025] The air compressor is used to press water into the reactor cavity to control the pressure in the reactor body, and the pressure gauge is used to monitor the pressure in the reactor cavity. Thus, by arranging the air compressor and the pressure gauge, the pressure of the reactor can be controlled in real time, and a water storage tank can be additionally installed in specific applications.

[0026] In the second aspect, the application further provides the application of the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid.

[0027] The high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid of the application is applied in geochemical reactions, can accurately simulate high-temperature and high-pressure reaction conditions, and can extract hydrothermal fluid in-situ from the flexible reaction cavity based on requirements at any time, so as to accurately control the sample amount of in-situ extraction experiments and improve the test accuracy.

[0028] The advantages of the application will be partially explained in the following description, some of which are obvious according to the description, or can be known by the implementation of the embodiments of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly explain the content of the application, the following will be combined with the specific embodiments and the drawings to be described in detail.

[0030] Figure 1 The structure diagram of the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid of the application is shown in the figure.

[0031] Figure 2 The structure diagram of the flexible reaction cavity in the application is shown in the figure. Figure 1

[0032] The sectional view of the flexible reaction cavity in the application is shown in the figure. Figure 3 Figure 1 The structure diagram of the reaction kettle cavity in the application is shown in the figure.

[0033] Figure 4 Figure 1 The structure diagram of the reaction kettle cavity in the application is shown in the figure. DETAILED DESCRIPTION

[0034] The following is the preferred embodiment of the application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the application, can make a number of improvements and refinements, these improvements and refinements are also considered to be within the scope of protection of the application.

[0035] ​​The application provides a high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid, which comprises a reaction kettle body and a reaction kettle cover plate, and the reaction kettle cover plate is combined with the reaction kettle body to form a reaction kettle cavity. The high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises a flexible reaction cavity, in particular, the flexible reaction cavity is a sealed reaction cavity body, which contains relevant geochemical reaction raw materials and provides a reaction space. When assembled, the flexible reaction cavity is arranged in the reaction kettle body, and the flexible reaction cavity has a heat conduction function, which can transmit heat in the high-temperature and high-pressure reaction kettle to the flexible reaction cavity, so that the flexible reaction cavity has the function of simulating high-temperature reaction conditions; and because the flexible reaction cavity has a certain flexibility, it can conduct the pressure in the reaction kettle to the flexible reaction cavity, so that the flexible reaction cavity has the function of simulating high-pressure reaction conditions. In specific embodiments, based on actual needs, the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid can comprise one or more flexible reaction cavities, and the one or more flexible reaction cavities are used to contain the same or different reaction raw materials.

[0036] In addition, the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises a first conduit and a collector, and the collector is arranged outside the reaction kettle cavity and is used to collect the high-temperature hydrothermal fluid extracted in-situ from the flexible reaction cavity. The specific structure is that the first conduit penetrates the reaction kettle cover plate and the flexible reaction cavity from outside to inside in sequence, so that the lower end of the first conduit is in communication with the flexible reaction cavity, and the upper end of the first conduit is in communication with the collector. When collecting the high-temperature hydrothermal fluid, the high-temperature hydrothermal fluid in the flexible reaction cavity can be extracted into the collector by controlling the pressure in the reaction kettle or the pressure in the collector, so as to realize in-situ extraction of the high-temperature hydrothermal fluid and be used for subsequent detection and analysis. At the same time, because the flexible reaction cavity is isolated from the reaction kettle body, the reaction kettle body is not polluted, and the sample loading amount is large. In specific embodiments, the first conduit and the collector should be made of high-temperature and high-pressure resistant materials to prevent damage caused by high temperature and high pressure in the test, and to prevent leakage of the hydrothermal fluid. The number of the first conduit and the collector can be set based on actual needs, the same conduit can be in communication with different collectors, or a plurality of first conduits and a plurality of collectors are in one-to-one communication.

[0037] In specific embodiments, the flexible reaction chamber comprises a flexible metal sleeve (similar to a sleeve), an upper clamp plate and a lower clamp plate, the flexible metal sleeve is provided with an annular flange at the port (similar to the annular flange provided at the port of the sleeve), the upper clamp plate is provided with a first through hole, and the lower clamp plate is provided with a second through hole. When assembling the flexible reaction chamber, the upper clamp plate abuts the upper end surface of the annular flange, and the lower clamp plate is sleeved from bottom to top on the flexible metal sleeve and abuts the lower end surface of the annular flange, thereby sealing the flexible metal sleeve by a flange structure. The first conduit passes through the first through hole and the second through hole from top to bottom in sequence to realize the communication between the first conduit and the flexible reaction chamber. In other embodiments, the flexible reaction chamber can also be sealed by other means to ensure that the flexible reaction chamber is only communicated with the external collector through the first conduit.

[0038] In specific embodiments, the annular flange, the upper clamp plate and the lower clamp plate are provided with locking holes at corresponding positions, and when assembling the flexible reaction chamber, the screw passes through the locking holes of the upper clamp plate, the annular flange and the lower clamp plate from top to bottom in sequence and is locked by a nut at the bottom surface of the lower clamp plate, thereby realizing the sealing of the flexible metal sleeve. In other embodiments, the annular flange, the upper clamp plate and the lower clamp plate can also be locked by other means, for example, by welding.

[0039] In specific embodiments, the flexible metal sleeve is a flexible reaction chamber made of an inert metal material. Specifically, it can be a flexible reaction chamber made of gold, silver, copper or platinum. More preferably, the flexible metal sleeve is provided in the shape of a cylinder, and the thickness of the flexible metal sleeve is 0.2-1 mm.

[0040] In specific embodiments, the upper clamp plate, the lower clamp plate and the first conduit are made of a high-temperature-resistant metal material. Specifically, they can be made of titanium and subjected to high-temperature annealing treatment.

[0041] In specific embodiments, the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises a reaction kettle clamp, the reaction kettle clamp comprises a groove structure, and a threaded hole is provided on the reaction kettle clamp, the threaded hole penetrating from the side surface of the reaction kettle clamp to the groove. When assembling the reaction kettle cavity, the edge of the reaction kettle cover plate abuts the port of the reaction kettle body, and the edge of the reaction kettle cover plate and the port of the reaction kettle body are embedded in the groove of the reaction kettle clamp, and then a screw is passed through the threaded hole to abut the reaction kettle body or the reaction kettle cover plate, thereby extruding the reaction kettle cover plate to tightly cover the reaction kettle body. In other embodiments, other connecting mechanisms can be used to replace the reaction kettle clamp, for example, a buckle is provided to tightly fasten the reaction kettle cover plate and the reaction kettle body.

[0042] In specific embodiments, the high-temperature and high-pressure reaction kettle for in-situ extraction of high-temperature hydrothermal fluid further comprises a sealing washer. When assembling the reaction kettle cavity, the edge of the reaction kettle cover plate abuts one side of the sealing washer, and the port of the reaction kettle body abuts the other side of the sealing washer. In specific embodiments, the sealing washer can be selected as a red copper washer.

[0043] In specific embodiments, the high-temperature, high-pressure reactor used for in-situ extraction of high-temperature hydrothermal fluids can be heated and controlled by an external temperature control system, or a temperature control system can be installed on the reactor itself. Specifically, the temperature control system includes a ring-shaped heating furnace and a thermocouple. The ring-shaped heating furnace is arranged around the reactor body to heat the reactor body, and the thermocouple is installed inside the reactor body to detect the temperature of the reactor body. In other embodiments, the ring-shaped heating furnace and thermocouple can be replaced by other heating mechanisms or temperature detectors.

[0044] In a specific embodiment, the high-temperature, high-pressure reactor used for in-situ extraction of high-temperature hydrothermal fluids can achieve a high-pressure effect by controlling the temperature, or a pressure control system can be installed on the reactor. Specifically, the pressure control system includes an air compressor, a pressure gauge, and a second conduit. One end of the second conduit is connected to the air compressor, and the other end is connected to the reactor cavity. When in use, the air compressor pressurizes water into the reactor cavity to control the pressure inside the reactor body, and the pressure gauge is used to monitor the internal pressure of the reactor cavity.

[0045] Example 1

[0046] like Figure 1 The diagram shown is a schematic of the high-temperature and high-pressure reactor used for in-situ extraction of high-temperature hydrothermal fluids in this embodiment. Figure 1 This embodiment describes a high-temperature, high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids, comprising a reactor body 1 and a reactor cover 2, the reactor cover 2 being fitted onto the reactor body 1 to form a reactor cavity. In a specific embodiment, the reactor cavity can be a common stainless steel reactor.

[0047] The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a flexible reaction chamber 3. Specifically, the flexible reaction chamber 3 is a sealed reaction cavity that accommodates relevant geochemical reaction raw materials and provides reaction space. During assembly, the flexible reaction chamber 3 is placed in the reactor body 1. The flexible reaction chamber 3 has a thermal conductivity function, which can transfer heat from the high-temperature and high-pressure reactor to the flexible reaction chamber 3, enabling the flexible reaction chamber 3 to simulate high-temperature reaction conditions. Furthermore, because the flexible reaction chamber 3 has a certain degree of flexibility, it can conduct pressure from the reactor to the flexible reaction chamber 3, enabling the flexible reaction chamber 3 to simulate high-pressure reaction conditions.

[0048] In specific embodiments, based on actual needs, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids may include one or more flexible reaction chambers 3, which are used to contain the same or different reaction raw materials. In this embodiment, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids is provided with one flexible reaction chamber 3.

[0049] The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a first conduit 4, a collector 5, and a collector 6. Collectors 5 and 6 are located outside the reactor cavity to collect the high-temperature hydrothermal fluid extracted in-situ from the flexible reaction chamber 3. Specifically, the first conduit 4 passes through the reactor cover plate 2 and the flexible reaction chamber 3 sequentially from the outside in, with its lower end connected to the flexible reaction chamber 3. Its upper end is connected to collectors 5 and 6 respectively. In practical use, valves can be installed on the first conduit 4 or collectors 5 and 6. When the valves are opened, because the pressure in collectors 5 and 6 is lower than the pressure in the flexible reaction chamber 3, the hydrothermal fluid is transported along the first conduit 4 to collectors 5 and 6. This two-stage sample collection design ensures accurate determination of the chemical composition of the solution in solution analysis experiments. In other embodiments, for the sake of simplified design or operation, only one collector may be included, or two first conduits may be connected one-to-one to two collectors, allowing for in-situ extraction of the solution from the flexible reaction chamber 3 in stages to meet the needs of real-time analysis and detection. In this embodiment, the first catheter 4 is a titanium catheter, and the collectors 5 and 6 are both titanium sampling containers.

[0050] In specific embodiments, such as Figures 1-3 As shown, the flexible reaction chamber 3 includes a flexible metal sleeve 31, an upper clamping plate 32, and a lower clamping plate 33. The flexible metal sleeve 31 is similar to a sleeve with only an opening at the top. The upper opening of the flexible metal sleeve 31 is provided as an annular flange 311. The upper clamping plate 32 has a first through hole 320, and the lower clamping plate 33 has a second through hole 330. When assembling the flexible reaction chamber 3, the upper clamping plate 32 abuts against the upper end face of the annular flange 311 from top to bottom, and the lower clamping plate 33 is sleeved onto the flexible metal sleeve 31 from bottom to top through the second through hole 330 and abuts against the lower end face of the annular flange 311. Thus, the upper clamping plate 32 and the lower clamping plate 33 are assembled into a flange-like structure to seal the upper opening of the flexible metal sleeve 31, thereby forming a sealed flexible reaction chamber 3. The upper clamping plate 32 is provided with a first through hole 320. When in use, the first conduit 4 can be passed through the first through hole 320 from top to bottom and inserted into the flexible metal sleeve 31 from the upper opening of the flexible metal sleeve 31 to realize the connection between the first conduit 4 and the flexible reaction chamber 3.

[0051] In a specific embodiment, locking holes 34 are provided at corresponding positions of the annular flange 311, the upper clamping plate 32, and the lower clamping plate 33. When assembling the flexible reaction chamber 3, the screw is passed through the locking holes 34 of the upper clamping plate 32, the annular flange 311, and the lower clamping plate 33 from top to bottom, and then locked with a nut on the bottom surface of the lower clamping plate 33, thereby achieving a sealed flexible metal sleeve 31. In other embodiments, the annular flange 311, the upper clamping plate 32, and the lower clamping plate 33 can also be connected in other ways.

[0052] In a specific embodiment, the flexible metal sleeve 31 is a flexible reaction chamber made of an inert metal material, more specifically, it can be a flexible reaction chamber made of gold, silver, copper, or platinum. In this embodiment, the flexible metal sleeve 31 is cylindrical, and the thickness of the flexible metal sleeve 31 is 0.2 to 1 mm. The metal foil ensures the flexibility of the flexible metal sleeve 31.

[0053] In specific embodiments, such as Figure 4 As shown, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a reactor clamp 7. After the edge 21 of the reactor cover plate is fitted onto the reactor body port 11, the reactor cover plate edge 21 and the reactor body port 11 are then engaged by the groove of the reactor clamp 7, which prevents pressure leakage from the reactor and enhances the safety of the reactor. In a more specific embodiment, the reactor clamp 7 may also be provided with a screw hole 71, which extends from the side of the reactor clamp 7 to the groove. In use, a screw can pass through the screw hole 71 to abut against the edge 21 of the reactor cover plate, further enhancing the sealing performance of the reactor. In other embodiments, a screw can also pass through the screw hole 71, the edge 21 of the reactor cover plate, and the reactor body port 11, which also enhances the sealing performance of the reactor.

[0054] In specific embodiments, such as Figure 4 As shown, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a sealing gasket 8, which is disposed between the reactor cover plate 2 and the reactor body 1. During reactor assembly, the edge 21 of the reactor cover plate abuts against the top of the sealing gasket 8, and the port 11 of the reactor body abuts against the bottom of the sealing gasket 8. In this embodiment, the sealing gasket is a copper sealing gasket.

[0055] In specific embodiments, such as Figure 1 As shown, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a temperature control system. Specifically, the temperature control system includes an annular heater 91 and thermocouples 92. The annular heater 91 is arranged to surround the reactor body 1 for heating the reactor body 1. The thermocouples 92 are disposed inside the reactor body 1 for detecting the temperature of the reactor body 1. In this embodiment, three thermocouples 92 can be provided, located at the top, middle, and bottom of the reactor body 1, respectively for detecting the temperature at different locations of the reactor body 1. In other embodiments, the heater can be configured in other shapes, or it can be disposed at the bottom of the reactor body 1 or at other locations, and the thermocouples 92 can be replaced by other temperature detection devices.

[0056] In a specific embodiment, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a pressure control system, which comprises an air compressor 101, a pressure gauge 102 and a second conduit 103. The upper end of the second conduit 103 is connected to the air compressor 101, and the lower end of the second conduit 103 is in communication with the reactor cavity. In use, the water is pressurized into the reactor cavity by the air compressor to increase the pressure in the reactor body 1. The pressure gauge 102 is in communication with the second conduit 103 and is used to monitor the pressure inside the reactor cavity. In other embodiments, a pressure relief valve can also be provided on the second conduit 103 to reduce the pressure in the reactor body 1 when the critical pressure is exceeded, so as to control the pressure in the reactor body 1 to be lower than the safe pressure.

[0057] In a specific embodiment, the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid further comprises a heat preservation layer 12, which is arranged to surround the reactor body 1, so as to prevent the heat inside the reactor body 1 from leaking too quickly. More specifically, the heat preservation layer 12 can also surround the annular heating furnace 91, which surrounds the reactor body 1, so as to better lock the heat.

[0058] Embodiment 2

[0059] An application example of a chemical reaction is used to illustrate the specific application process of the high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluid. Under the conditions of 250-500°C and 40MPa, the Ba isotope fractionation experiment between barite and NaCl fluid is carried out.

[0060] The experiment is difficult to realize in-situ extraction of the solution after the reaction for chemical composition measurement due to high temperature and pressure, and the high temperature and high pressure reaction kettle for in-situ extraction of high temperature hydrothermal fluid in embodiment 1 can achieve the requirement. First, we calculate the volume of the experimental liquid required to be added according to the experimental temperature and pressure, and the volume of the sample chamber; then we add BaSO4 and NaCl-BaCl2 solution in the flexible reaction chamber 3 made of gold. After the flexible reaction chamber 3 is sealed with a titanium sealing ring, it is placed in the stainless steel reaction kettle body, and after the cover plate and clamp are sealed with a nut, the pressure pump is used to pressurize to about 20 MPa, the thermocouple is inserted, and then the temperature is slowly raised. During the temperature rising process, the pressure indication change is monitored, and attention is paid to whether there is water leakage at the high pressure kettle sealing position; if there is water leakage, the experiment is stopped immediately and the sealing problem is checked after cooling; if the pressure continues to rise, gradually use the pressure relief device to drain water outside, and keep the pressure indication near the target pressure of 40 MPa. During the experiment, 1ml of experimental solution is taken out twice through the valve, and the pH is tested, and the concentration of Ba in the ICP-MS test and the Ba isotope composition of the solution in the MC-ICP-MS test are tested. The high temperature and high pressure reaction kettle for in-situ extraction of high temperature hydrothermal fluid in the application can realize real-time sampling detection of the experimental hydrothermal fluid, and can test the pH and various chemical compositions of the fluid sample.

[0061] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A high-temperature, high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids, characterized in that, It includes a reactor body and a reactor cover plate, wherein the reactor cover plate is used to seal the reactor body to form a reactor cavity; The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids further includes at least one thermally conductive flexible reaction chamber, which is disposed in the reactor body and is in a sealed state. The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes at least one high-temperature and high-pressure resistant first conduit and at least one collector. The collector is located outside the reactor cavity. The first conduit passes through the reactor cover and the flexible reaction chamber from the outside to the inside so that one end of the first conduit is connected to the flexible reaction chamber and the other end of the first conduit is connected to the collector. The flexible reaction chamber includes a flexible metal sleeve, an upper clamping plate, and a lower clamping plate. The port of the flexible metal sleeve is provided with an annular flange. The upper clamping plate is provided with a first through hole, and the lower clamping plate is provided with a second through hole. When assembling the flexible reaction chamber, the upper clamping plate abuts against one side of the annular flange, and the lower clamping plate is fitted with a flexible metal sleeve and abuts against the other side of the annular flange to seal the flexible metal sleeve; the first conduit passes through the first through hole and the second through hole in sequence to achieve communication between the first conduit and the flexible reaction chamber; The flexible metal sleeve is a flexible reaction chamber made of gold.

2. The high-temperature and high-pressure reactor as described in claim 1, characterized in that, Locking holes are provided at corresponding positions of the annular flange, the upper clamping plate, and the lower clamping plate. When assembling the flexible reaction chamber, the screw passes through the locking holes of the upper clamping plate, the annular flange, and the lower clamping plate in sequence to seal the flexible metal sleeve.

3. The high-temperature and high-pressure reactor as described in claim 2, characterized in that, The upper clamping plate, lower clamping plate, and first conduit are all made of titanium and have undergone high-temperature annealing treatment.

4. The high-temperature and high-pressure reactor as described in claim 1, characterized in that, The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a reactor clamp, which includes a groove for accommodating the reactor body port and the edge of the reactor cover plate. The reactor clamp is provided with a screw hole that extends from the side of the reactor clamp into the groove. When assembling the reactor cavity, the edge of the reactor cover plate abuts against the port of the reactor body, and both the edge of the reactor cover plate and the port of the reactor body are embedded in the groove of the reactor fixture. The screw passes through the screw hole to abut against the reactor body or the reactor cover plate.

5. The high-temperature and high-pressure reactor as described in claim 4, characterized in that, The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a sealing gasket, which is disposed between the reactor cover plate and the reactor body. When assembling the reactor cavity, the edge of the reactor cover plate abuts against one side of the sealing gasket, and the port of the reactor body abuts against the other side of the sealing gasket.

6. The high-temperature and high-pressure reactor as described in claim 1, characterized in that, It also includes a temperature control system, which includes an annular heating furnace and a thermocouple, wherein the annular heating furnace is arranged to surround the reactor body for heating the reactor body; The thermocouple is installed inside the reactor body to detect the temperature of the reactor body.

7. The high-temperature and high-pressure reactor as described in claim 1, characterized in that, The high-temperature and high-pressure reactor for in-situ extraction of high-temperature hydrothermal fluids also includes a pressure control system, which includes an air compressor, a pressure gauge, and a second conduit. One end of the second conduit is connected to the air compressor, and the other end of the second conduit is connected to the reactor cavity. When in use, the air compressor pressurizes water into the reactor cavity to control the pressure inside the reactor body, and the pressure gauge is used to monitor the pressure inside the reactor cavity.

8. An application of a high-temperature and high-pressure reactor as described in any one of claims 1-7.

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