High-pressure reaction kettle

Abstract

The utility model discloses a high-pressure reaction kettle which comprises a high-pressure generator used for generating and maintaining a high-pressure environment required by reaction; the reaction kettle is made of a transparent material, and the high-pressure generator is connected with the reaction kettle through a pipeline; the optical fiber array component is arranged in the reaction kettle, and the optical fiber array component comprises a single-mode optical fiber, a mode field matching area, a multi-mode optical fiber and a multi-core optical fiber which are arranged in sequence; the optical signal assembly comprises a broadband light source, a circulator and an optical fiber spectrometer; wherein the broadband light source and the optical fiber spectrometer are connected with one end of the single-mode optical fiber through the circulator; the other end of the single-mode optical fiber is connected with the mode field matching area, one end of the multimode optical fiber is connected with the mode field matching area, and the other end of the multimode optical fiber is connected with the multi-core optical fiber. According to the technical scheme, the gas hydrate generation process can be monitored in real time.

Description

A high-pressure reactor Technical Field

[0001] This utility model relates to the field of gas hydrate technology, and in particular to a high-pressure reactor. Background Technology

[0002] As a cage-like crystal structure formed by gas molecules being encased by water molecules, gas hydrates have attracted much attention due to the differences in the conditions under which different gas molecules form hydrates and the order in which they enter the cages.

[0003] Currently, the venting method is commonly used to determine the order in which gases enter the hydrate structure. This method is simple to operate, requires no complex equipment, and involves collecting the gases released during the formation process. Compositional changes are analyzed using techniques such as gas chromatography. Repeated venting sampling can also obtain time-series data to analyze differences in adsorption behavior, directly observing the preferential capture of gases to infer their tendency to enter the hydrate cage.

[0004] However, the venting method has significant drawbacks. Venting alters the system pressure, interfering with the hydrate formation process, affecting hydrate stability, and leading to inaccurate experimental results. Furthermore, analysis of released gases cannot fully reflect the true sequence of gas entry into the cage. Each venting requires pausing the experiment to extract samples, interrupting the continuity of the closed system and failing to capture instantaneous dynamic changes during hydrate formation, such as the nucleation stage. The low frequency of manual or semi-automatic sampling makes it impossible to effectively monitor critical processes on short timescales (milliseconds) such as hydrate nucleation and cage structure transformation, resulting in the loss of crucial kinetic information and hindering in-depth and accurate investigation of the gas hydrate formation mechanism. Summary of the Invention

[0005] The main purpose of this invention is to provide a high-pressure reactor designed to enable real-time monitoring of the gas hydrate formation process.

[0006] To achieve the above objectives, the high-pressure reactor proposed in this utility model includes:

[0007] A high-pressure generator, which is used to generate and maintain the high-pressure environment required for the reaction;

[0008] A reaction vessel, wherein the reaction vessel is made of transparent material, and the high-pressure generator is connected to the reaction vessel via a pipeline;

[0009] An optical fiber array component is disposed inside a reactor. The optical fiber array component includes a single-mode fiber, a mode field matching region, a multimode fiber, and a multi-core fiber arranged in sequence.

[0010] An optical signal component, the optical signal component including a broadband light source, a circulator and a fiber optic spectrometer;

[0011] Both the broadband light source and the fiber optic spectrometer are connected to one end of the single-mode fiber via the circulator.

[0012] The other end of the single-mode fiber is connected to the mode field matching region, one end of the multimode fiber is connected to the mode field matching region, and the other end of the multimode fiber is connected to the multi-core fiber.

[0013] In some embodiments of this utility model, a square cavity is provided at one end of the multi-core optical fiber near the multimode optical fiber, and a cylindrical through hole penetrating the square cavity is opened on the side wall of the multi-core optical fiber perpendicular to its core.

[0014] In some embodiments of this utility model, the inner wall of the multi-core optical fiber is provided with a microstructure grating.

[0015] In some embodiments of this utility model, the high-pressure generator includes a high-pressure gas cylinder and a dynamic pressure valve; the high-pressure gas cylinder is connected to the reaction vessel through a high-pressure pipeline, and the dynamic pressure valve is disposed on the high-pressure pipeline.

[0016] In some embodiments of this utility model, the reaction vessel is made of sapphire.

[0017] In some embodiments of this invention, the high-pressure reactor further includes a temperature and pressure sensor connected to the reactor.

[0018] In some embodiments of this utility model, the multi-core optical fiber is a four-core optical fiber.

[0019] This invention relates to a high-pressure reactor that achieves real-time monitoring of the gas hydrate formation process through the coordinated operation of multiple components. A high-pressure generator produces and maintains a stable high-pressure environment, ensuring gas hydrates form under suitable conditions and providing a stable reaction basis for real-time monitoring. The transparent reactor not only withstands high pressure but also allows researchers to directly observe the internal reaction. It is connected to the high-pressure generator via pipelines, ensuring a stable supply of the high-pressure environment. The fiber optic array is the core monitoring component. Single-mode fibers stably transmit optical signals, a mode field matching region enables efficient coupling of optical signals between single-mode and multimode fibers, multimode fibers transmit multiple modes of light to carry more information, and multi-core fibers independently detect different gases, allowing simultaneous acquisition of multiple gas concentration change data. In the optical signal component, a broadband light source provides broad-spectrum light, a circulator ensures stable unidirectional transmission of the optical signal, and a fiber optic spectrometer receives and analyzes the optical signal to accurately determine the gas concentration, thereby achieving real-time monitoring of the gas hydrate formation process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 is a schematic diagram of the high-pressure reactor of this utility model;

[0022] Figure 2 is one of the structural schematic diagrams of the fiber optic array component of this utility model;

[0023] Figure 3 is a second schematic diagram of the structure of the fiber optic array component of this utility model;

[0024] Figure 4 is a cross-sectional view of AA in Figure 3;

[0025] Figure 5 is a perspective view of the fiber optic array component of this utility model.

[0026] Explanation of icon numbers:

[0027] 100. Reactor; 200. Fiber optic array component; 210. Single-mode fiber; 220. Mode field matching region; 230. Multi-core fiber; 240. Directional cavity; 250. Cylindrical through-hole; 260. Fiber core; 300. Broadband light source; 400. Circulator; 500. Fiber optic spectrometer; 600. High-pressure gas cylinder; 700. Dynamic pressure valve; 800. Temperature and pressure sensor;

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment of the invention are only used to explain the relative positions between the components in a specific posture (as shown in the attached figure).

[0031] If the specific posture changes, the directional indication will also change accordingly, depending on factors such as position and movement.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this utility model.

[0033] Referring to Figures 1-5, this utility model proposes a high-pressure reactor, comprising:

[0034] A high-pressure generator is used to create and maintain the high-pressure environment required for the reaction, thus providing the necessary conditions for the formation of gaseous hydrates. A stable high-pressure environment ensures that the reaction proceeds according to preset pressure parameters, avoiding the impact of pressure fluctuations on the hydrate formation process and stability, and guaranteeing the reliability and accuracy of experimental data.

[0035] Reactor 100 is made of transparent material, and the high-pressure generator is connected to reactor 100 via pipes. The transparent material allows researchers to directly observe the formation process of gas hydrates inside reactor 100. The connection to the high-pressure generator via pipes facilitates the delivery of high-pressure gas and the maintenance of the reaction environment, ensuring a stable pressure supply inside reactor 100.

[0036] The fiber array component 200 is disposed inside the reactor 100. The fiber array component 200 includes a single-mode fiber 210, a mode field matching region 220, a multimode fiber, and a multi-core fiber 230 arranged in sequence.

[0037] The optical signal component includes a broadband light source 300, a circulator 400, and a fiber optic spectrometer 500.

[0038] Both the broadband light source 300 and the fiber optic spectrometer 500 are connected to one end of the single-mode fiber 210 via a circulator 400. The broadband light source 300 emits broadband light to meet the wavelength requirements of different gas detection signals. The circulator 400 ensures stable unidirectional transmission of the light signal, prevents interference from reflected light, and enables the light signal to be accurately transmitted to the corresponding location. The fiber optic spectrometer 500 is used to receive the light signal after it has been acted upon by the gas, and determines the gas concentration by analyzing the spectral characteristics of the light signal, providing data support for real-time monitoring of the gas hydrate formation process.

[0039] One end of the single-mode fiber 210 is connected to the mode field matching region 220, and one end of the multimode fiber is connected to the mode field matching region 220, while the other end is connected to the multi-core fiber 230. The single-mode fiber 210 ensures stable transmission of the optical signal, reducing signal interference and loss. The mode field matching region 220 enables efficient coupling of the optical signal between the single-mode fiber 210 and the multimode fiber, improving the transmission efficiency of the optical signal. The multimode fiber can transmit multiple modes of light, increasing the information carried by the optical signal. The multi-core fiber 230 provides multiple independent channels for the detection of different gases, which is beneficial for the simultaneous detection of concentration changes of multiple gases. The fiber array component 200 is connected to the reactor 100 through a double-bolt threaded connection structure, ensuring stable installation of the fiber under high pressure, preventing high-pressure gas leakage, avoiding damage to the fiber, and ensuring the stability of optical signal transmission.

[0040] Based on the aforementioned technical features, the high-pressure reactor 100 achieves real-time monitoring of the gas hydrate formation process through the coordinated operation of multiple components. The high-pressure generator produces and maintains a stable high-pressure environment, ensuring gas hydrates form under suitable conditions and providing a stable reaction basis for real-time monitoring. The transparent reactor 100 not only withstands high pressure but also allows researchers to directly observe the internal reaction. It is connected to the high-pressure generator via pipelines, ensuring a stable supply of the high-pressure environment. The fiber optic array component 200 is the core of the monitoring system. The single-mode fiber 210 stably transmits optical signals, the mode field matching region 220 achieves efficient coupling of optical signals between single-mode and multimode fibers, the multimode fiber transmits multiple modes of light to carry more information, and the multi-core fiber 230 independently detects different gases, simultaneously acquiring multiple gas concentration change data. In the optical signal components, the broadband light source 300 provides broadband light, the circulator 400 ensures stable unidirectional transmission of the optical signal, and the fiber optic spectrometer 500 receives and analyzes the optical signal, accurately measuring the gas concentration, thereby achieving real-time monitoring of the gas hydrate formation process.

[0041] Specifically, a square cavity is provided at one end of the multi-core optical fiber 230 near the multimode optical fiber, and a cylindrical through hole 250 penetrating the square cavity is opened on the side wall of the multi-core optical fiber 230 perpendicular to its core 260; the cylindrical through hole 250 allows the gas in the reactor 100 to enter the square cavity and fully contact the optical signal, enhancing the absorption and scattering effects between the optical signal and the gas, thereby improving the sensitivity and accuracy of gas detection and helping to more accurately monitor changes in gas concentration.

[0042] Among them, the inner wall of the core 260 of the multi-core optical fiber 230 is equipped with a microstructured grating, which can selectively reflect light of specific wavelengths. Different gases have specific wavelength characteristics in their absorption or scattering of light. The microstructured grating can filter and modulate the optical signal carrying gas information based on these characteristics, enabling the fiber optic spectrometer 500 to analyze the optical signal more accurately and thus more precisely distinguish the components of different gases.

[0043] The composition and concentration changes of the microstructure grating improve the accuracy and specificity of gas detection. A stable optical fiber connection to the reactor 100 ensures a stable environment for the microstructure grating, guaranteeing its stable performance in modulating optical signals.

[0044] In this embodiment, the high-pressure generator includes a high-pressure gas cylinder 600 and a dynamic pressure valve 700. The high-pressure gas cylinder 600 is connected to the reactor 100 through a high-pressure pipeline. The dynamic pressure valve 700 is installed in the high-pressure pipeline. During the gas hydrate generation process, the pressure can be adjusted in a timely manner according to experimental requirements to ensure that the reaction is carried out under the optimal pressure conditions. At the same time, it avoids the interference of pressure fluctuations on the hydrate generation process and improves the repeatability and accuracy of the experiment.

[0045] Specifically, the reactor 100 is made of sapphire, which has a pressure resistance of ≥20MPa, enabling it to withstand the high-pressure environment during the formation of gas hydrates and ensuring the safety and stability of the reactor 100. Its light transmittance is >90%, providing a clear observation window for the external high-speed camera system, facilitating researchers to observe the morphological evolution of hydrates in real time.

[0046] The high-pressure reactor 100 also includes a temperature and pressure sensor 800 connected to the reactor 100, which can monitor the temperature and pressure changes inside the reactor 100 in real time.

[0047] Furthermore, the multi-core optical fiber 230 is a four-core optical fiber, with each core independently modifiable as a sensor for a specific gas (such as CH4, CO2, N2, H2). This allows the reactor 100 to simultaneously monitor multiple key gases in real time, acquiring concentration change data for various gases during hydrate formation. By comparing the concentration changes of different gases, researchers can analyze the order and tendency of gases entering the hydrate cage, gaining a deeper understanding of the gas hydrate formation mechanism. The above description is merely a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model, utilizing the description and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A high-pressure reactor, characterized in that, include: A high-pressure generator is used to generate and maintain the high-pressure environment required for the reaction; a reaction vessel is made of transparent material, and the high-pressure generator is connected to the reaction vessel via a pipe; an optical fiber array component is disposed inside the reaction vessel, and the optical fiber array component includes a single-mode fiber, a mode field matching region, a multimode fiber, and a multi-core fiber arranged in sequence; an optical signal component includes a broadband light source, a circulator, and a fiber optic spectrometer; wherein, the broadband light source and the fiber optic spectrometer are both connected to one end of the single-mode fiber through the circulator; the other end of the single-mode fiber is connected to the mode field matching region, one end of the multimode fiber is connected to the mode field matching region, and the other end of the multimode fiber is connected to the multi-core fiber.

2. The high-pressure reactor as described in claim 1, characterized in that, The multi-core optical fiber has a square cavity at one end near the multimode optical fiber, and a cylindrical through hole penetrating the square cavity is opened on the side wall of the multi-core optical fiber perpendicular to its core.

3. The high-pressure reactor as described in claim 2, characterized in that, The inner wall of the multi-core optical fiber is provided with a microstructure grating.

4. The high-pressure reactor as described in claim 1, characterized in that, The high-pressure generator includes a high-pressure gas cylinder and a dynamic pressure valve; the high-pressure gas cylinder is connected to the reactor through a high-pressure pipeline, and the dynamic pressure valve is located on the high-pressure pipeline.

5. The high-pressure reactor as described in claim 1, characterized in that, The reactor is made of sapphire.

6. The high-pressure reactor as described in claim 1, characterized in that, The high-pressure reactor also includes a temperature and pressure sensor connected to the reactor.

7. The high-pressure reactor as described in claim 1, characterized in that, The multi-core optical fiber is a four-core optical fiber.

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