A high pressure gas delivery system

Abstract

The utility model discloses a kind of high-pressure gas transmission systems, it is applied to reaction kettle, the high-pressure gas transmission system includes switch valve, gas transmission needle type valve, gas flowmeter, check valve, back pressure valve and wet flowmeter;The gas transmission needle type valve is connected with the gas flowmeter and forms parallel pipeline, the switch valve, the parallel pipeline, the check valve, the reaction kettle, the back pressure valve and the wet flowmeter are sequentially connected in series, and the switch valve is communicated with high-pressure gas source;The reaction kettle is equipped with pressure detection unit and pressure relief valve, and the pressure detection unit is used for real-time detection pressure in kettle and transmits data to the control end of the reaction kettle.The utility model is communicated by series connection gas path structure, realizes gas directional flow, harmful gas generated by reaction can be discharged in time along with airflow, avoid stagnation corrosion equipment and poison catalyst;It improves the corrosion protection capability of reaction kettle, catalyst stability guarantee effect, applicable to various high-pressure hydrogenation reaction scene.

Description

Technical Field

[0001] This utility model relates to the technical field of reactor supporting equipment, and in particular to a high-pressure gas transmission system. Background Technology

[0002] High-pressure reactors are the core equipment for hydrogenation reactions of mixtures containing sulfur and chlorine, and must operate under harsh conditions of high temperature and high pressure for extended periods. During the reaction, sulfur and chlorine in the raw materials readily react with hydrogen to produce corrosive gases such as hydrogen sulfide and hydrogen chloride. These gases not only corrode the metal components of the reactor but also poison and deactivate precious or transition metal catalysts inside. Simultaneously, the actual hydrogen consumption within the reactor is a key parameter reflecting the reaction progress, and accurate acquisition of this parameter is crucial for process optimization. Furthermore, abnormalities such as "temperature runaway" or short circuits in the reactor can cause a sudden pressure surge, easily leading to safety accidents.

[0003] Existing gas delivery systems for reactors have several drawbacks: they lack a directional and efficient design for venting harmful gases, leading to the retention of corrosive gases, which exacerbates equipment corrosion and catalyst deactivation; they lack a metering linkage structure between the inlet and outlet ends, making it impossible to accurately calculate the actual hydrogen consumption and affecting process control; and they are disconnected from the safety pressure relief system, resulting in slow emergency exhaust response and difficulty in coping with pressure surges under abnormal operating conditions. To address these problems, this invention provides a high-pressure gas delivery system for reactors. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure gas transmission system to solve the problems mentioned in the background section. To achieve the above objective, this invention provides the following technical solution: A high-pressure gas delivery system is applied to a reaction vessel. The high-pressure gas delivery system includes a switching valve, a gas delivery needle valve, a gas flow meter, a check valve, a back pressure valve, and a wet flow meter. The gas delivery needle valve is connected to the gas flow meter to form a parallel pipeline. The switching valve, the parallel pipeline, the check valve, the reaction vessel, the back pressure valve, and the wet flow meter are connected in series. The switching valve is connected to a high-pressure gas source. The reaction vessel is equipped with a pressure detection unit and a pressure relief valve. The pressure detection unit is used to detect the pressure inside the reaction vessel in real time and transmit the data to the control terminal of the reaction vessel.

[0005] Furthermore, the reactor is equipped with an inlet needle valve, and the one-way valve is connected to the inlet needle valve through a pipeline.

[0006] Furthermore, the reactor is equipped with a gas outlet needle valve, which is connected to the back pressure valve via a pipeline.

[0007] Furthermore, the reactor is equipped with a liquid-taking needle valve.

[0008] Furthermore, the reaction vessel includes a vessel body and a vessel lid, the vessel lid being sealed to the vessel body.

[0009] Furthermore, a PPL sealing ring is provided between the vessel lid and the vessel body.

[0010] Furthermore, the reactor also includes a fastening assembly for connecting and securing the reactor lid to the reactor body.

[0011] Furthermore, the fastening assembly includes a U-shaped locking block and an adjusting bolt. The opening of the U-shaped locking block engages with the joint between the vessel cover and the vessel body. A threaded hole is provided on one side of the U-shaped locking block, and the adjusting bolt is screwed into the threaded hole. The adjusting bolt presses the vessel cover or the vessel body so that the U-shaped locking block and the adjusting bolt clamp and secure the vessel cover and the vessel body.

[0012] Furthermore, a gasket is provided between the adjusting bolt and the vessel cover or the vessel body.

[0013] The beneficial effects of this utility model are as follows: Through a series-connected gas path structure, this utility model achieves directional gas flow, allowing harmful gases such as hydrogen sulfide and hydrogen chloride generated during the reaction to be discharged promptly with the airflow, avoiding their retention and corrosion of equipment and poisoning of catalysts; the gas flow meter at the inlet end and the wet flow meter at the outlet end work together to calculate the actual hydrogen consumption by measuring the difference between the inlet and outlet volumes, providing accurate data for judging the reaction progress and raw material conversion rate; the pressure detection unit and the pressure relief valve work together to achieve real-time pressure monitoring and automatic pressure relief in case of overpressure, improving equipment operating safety and addressing pressure risks under abnormal operating conditions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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 these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the high-pressure gas transmission system of this utility model.

[0016] Figure 2 This is a schematic diagram of the top structure of the reaction vessel of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the reaction vessel of this utility model.

[0018] Figure 4 This is an exploded structural diagram of the reaction vessel of this utility model.

[0019] Figure 5 This is a side view of the reaction vessel of this utility model.

[0020] Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0021] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0022] 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.

[0023] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 4As shown, a high-pressure gas transmission system is applied to a reactor 1. The high-pressure gas transmission system includes a switching valve 2, a gas transmission needle valve 3, a gas flow meter 4, a check valve 5, a back pressure valve 6, and a wet flow meter 7. The gas transmission needle valve 3 and the gas flow meter 4 are connected to form a parallel pipeline. The switching valve 2, the parallel pipeline, the check valve 5, the reactor 1, the back pressure valve 6, and the wet flow meter 7 are connected in series. The switching valve 2 is connected to a high-pressure gas source. The reactor 1 is equipped with a pressure detection unit 11 and a pressure relief valve 12. The pressure detection unit 11 is used to detect the pressure inside the reactor 1 in real time and transmit the data to the control terminal of the reactor 1.

[0027] Specifically, in this embodiment, the high-pressure gas transmission system includes a switching valve 2, a gas transmission needle valve 3, a gas flow meter 4, a check valve 5, a back pressure valve 6, and a wet flow meter 7. The reactor 1 is equipped with a pressure detection unit 11 and a pressure relief valve 12. The gas transmission needle valve 3 and the gas flow meter 4 are connected to form a parallel pipeline. One end of this parallel pipeline is connected to the switching valve 2, and the other end is connected to the check valve 5. The switching valve 2 is also connected to a high-pressure gas source. The end of the check valve 5 furthest from the parallel pipeline is connected to the gas input end of the reactor 1. The gas output end of the reactor 1 is connected to the back pressure valve 6, which is then connected to the wet flow meter 7 via a pipeline, forming a sequentially connected structure of "switching valve 2 - parallel pipeline - check valve 5 - reactor 1 - back pressure valve 6 - wet flow meter 7". A pressure detection unit 11 is installed on the reactor 1. The pressure detection unit 11 includes a pressure sensor and a pressure gauge. The pressure sensor is connected to the control terminal of the reactor 1 to realize real-time transmission of pressure data, and the pressure gauge is used to display the pressure value inside the reactor in real time. A pressure relief valve 12 is directly assembled on the reactor 1 to realize overpressure relief.

[0028] The working principle of the high-pressure gas transmission system in this embodiment is as follows: After the switch valve 2 is opened, the gas (such as hydrogen) from the high-pressure gas source enters the system. It passes through a parallel pipeline composed of a gas needle valve 3 and a gas flow meter 4. The gas flow meter 4 accurately monitors the inlet flow rate, while the gas needle valve 3 can adjust the inlet rate. The gas enters the reactor 1 through a one-way valve 5 to prevent backflow of gas within the reactor 1. During the reaction, the pressure detection unit 11 collects the pressure data inside the reactor in real time and transmits it to the control terminal, allowing operators to monitor pressure changes in real time. The gas after the reaction is discharged from the reactor 1. After the back pressure valve 6 adjusts the output pressure and flow rate, the exhaust flow rate is measured by a wet flow meter 7. When the pressure inside the reactor exceeds a set threshold, the pressure relief valve 12 automatically opens to release pressure, ensuring equipment safety.

[0029] This system achieves directional gas flow through the aforementioned series-connected gas path structure. Harmful gases such as hydrogen sulfide and hydrogen chloride generated during the reaction can be discharged in a timely manner with the gas flow, avoiding stagnation that could corrode equipment and poison the catalyst. The gas flow meter 4 at the inlet end and the wet flow meter 7 at the outlet end work together to calculate the actual hydrogen consumption by the difference between the inlet and outlet volumes, providing accurate data for judging the reaction progress and raw material conversion rate. The pressure detection unit 11 works in conjunction with the pressure relief valve 12 to achieve real-time pressure monitoring and automatic pressure relief in case of overpressure, improving the safety of equipment operation and dealing with pressure risks under abnormal operating conditions.

[0030] In some embodiments, such as Figures 2 to 4 As shown, the reactor 1 is equipped with an inlet needle valve 13. One end of the inlet needle valve 13 is connected to the inside of the reactor 1, and the other end is connected to the end of the one-way valve 5 away from the parallel pipeline through a pipe. The pipe is made of stainless steel and is sealed by compression fittings and pipe caps, which improves the sealing performance under high pressure conditions, prevents gas leakage, and is suitable for use in high temperature and corrosive environments.

[0031] The inlet needle valve 13 clarifies the path of gas entering reactor 1, preventing gas from stagnating in the connecting pipeline. The precise connection between the inlet needle valve 13 and the one-way valve 5 enhances the controllability of gas delivery, allowing for flexible adjustment of inlet parameters according to reaction requirements and ensuring stable reaction operation. After flowing out through the one-way valve 5, the gas directly enters the inlet needle valve 13 via the pipeline. Operators can further precisely control the gas flow rate and velocity entering reactor 1 by adjusting the opening of the inlet needle valve 13, achieving dual flow control in conjunction with the front-end gas delivery needle valve 3.

[0032] In some embodiments, such as Figures 2 to 4 As shown, the reactor 1 is equipped with a vent needle valve 14. One end of the vent needle valve 14 is connected to the inside of the reactor 1, and the other end is connected to the back pressure valve 6 through a pipe. The pipe is also made of stainless steel and is assembled with a compression fitting and a cap for sealing.

[0033] The design of the outlet needle valve 14 makes the exhaust path more regular, and together with the back pressure valve 6, it improves the accuracy of exhaust control, avoiding pressure fluctuations inside the reactor caused by sudden changes in exhaust rate. When the gas after reaction flows out of the reactor 1, it first passes through the outlet needle valve 14. The operator can adjust the opening of the outlet needle valve 14 to initially control the exhaust rate, and then enters the back pressure valve 6 for secondary pressure and flow regulation. Through the coordinated operation of the outlet needle valve 14 and the back pressure valve 6, the exhaust process can be controlled in stages to ensure stable exhaust.

[0034] In some embodiments, such as Figures 2 to 4As shown, the reactor 1 is equipped with a liquid-taking needle valve 15. The liquid-taking needle valve 15 is directly mounted on the reactor body 16 or the reactor cover 17 of the reactor 1. One end of its valve core extends into the interior of the reactor 1, and the other end protrudes outside the reactor 1. The outer wall of the valve body is connected to the assembly hole of the reactor 1 by a sealing structure to ensure sealing under high pressure conditions.

[0035] The sampling needle valve 15 enables mid-process sampling during the reaction without opening the reactor 1, preventing high-pressure gas leakage and the entry of external impurities, thus ensuring the continuity and safety of the reaction. During the hydrogenation reaction, when sampling of the reaction liquid is required, the operator can open the sampling needle valve 15. The reaction liquid in reactor 1 flows out from the sampling needle valve 15 under the pressure inside the reactor. After sampling, the valve can be closed. Sampling and testing allow for real-time monitoring of the reaction liquid's state, providing a basis for process adjustments and improving the accuracy of reaction control. Furthermore, the opening degree of the sampling needle valve 15 is adjustable, facilitating control of the sampling volume and rate.

[0036] In some embodiments, such as Figure 3 and Figure 4 As shown, the reactor 1 includes a vessel body 16 and a vessel cover 17. The vessel cover 17 is fitted onto the open end of the vessel body 16. The mating surface between the vessel cover 17 and the vessel body 16 adopts a suitable sealing structure to ensure that a closed space is formed inside the vessel after the cover is closed, which meets the sealing requirements of the high-pressure hydrogenation reaction.

[0037] During the reaction, the sealed structure prevents the leakage of high-pressure gas and reactants, providing a stable sealed environment for the hydrogenation reaction. This ensures that the reaction proceeds under the set high temperature and high pressure conditions, avoiding the safety risks and reaction efficiency losses caused by high-pressure gas leakage. The split design of the vessel body 16 and vessel lid 17 also facilitates equipment cleaning, catalyst loading, and maintenance operations before and after the reaction.

[0038] In some embodiments, such as Figure 4 As shown, a PPL sealing ring 18 is also provided between the mating surfaces of the vessel lid 17 and the vessel body 16. The size of the PPL sealing ring 18 is adapted to the mating surfaces and fits tightly between the vessel lid 17 and the vessel body 16. The sealing is achieved by the clamping force between the vessel lid 17 and the vessel body 16. The PPL sealing ring 18 has excellent high-temperature resistance and corrosion resistance. Under the high-temperature and high-pressure conditions of hydrogenation reaction, it can maintain stable sealing performance and effectively prevent high-pressure gas and corrosive gas (such as hydrogen sulfide and hydrogen chloride) from leaking from the mating surface. This protects the external structure of the equipment, extends the service life of the sealing components, and avoids safety hazards and environmental pollution caused by gas leakage. Its good dimensional stability can prevent sealing failure due to temperature changes or pressure fluctuations.

[0039] In some embodiments, such as Figure 5 and Figure 6As shown, the reactor 1 also includes a fastening assembly 8, which is assembled at the joint between the reactor lid 17 and the reactor body 16 to connect and fix the reactor lid 17 and the reactor body 16. The connection position of the fastening assembly 8 with the reactor lid 17 and the reactor body 16 is adapted to ensure that the force is evenly distributed on the joint surface, avoiding excessive local force that could lead to seal failure. By applying clamping force through the fastening assembly 8, the reactor lid 17 and the reactor body 16 are tightly fitted together, pressing the PPL sealing ring 18 between them to form a reliable sealing structure. During the reaction process, the fastening assembly 8 continuously provides a stable clamping force to resist the force of the high-pressure gas inside the reactor on the joint surface, preventing the reactor lid 17 from separating from the reactor body 16.

[0040] The fastening assembly 8 ensures the stability and firmness of the connection between the vessel cover 17 and the vessel body 16, providing reliable pressure support for the sealing structure and preventing seal failure under high-pressure conditions. Its detachable design facilitates disassembly and maintenance of the equipment, improving operational convenience.

[0041] In some embodiments, such as Figure 5 and Figure 6 As shown, the fastening assembly 8 includes a U-shaped locking block 81 and an adjusting bolt 82. The opening size of the U-shaped locking block 81 is adapted to the thickness of the vessel cover 17 and the vessel body 16. The opening of the U-shaped locking block 81 engages with the joint between the vessel cover 17 and the vessel body 16. A threaded hole is provided on one side of the U-shaped locking block 81. The adjusting bolt 82 matches the threaded hole and is screwed into the threaded hole. The end of the adjusting bolt 82 can directly contact the outer wall of the vessel cover 17 or the vessel body 16 to press the vessel cover 17 or the vessel body 16, so that the U-shaped locking block 81 and the adjusting bolt 82 clamp and secure the vessel cover 17 and the vessel body 16.

[0042] During assembly, align the opening of the U-shaped locking block 81 with the joint between the vessel lid 17 and the vessel body 16, allowing the locking block to engage with both. Then, rotate the adjusting bolt 82, which moves towards the vessel lid 17 or vessel body 16 via threaded transmission until it is pressed tightly against either the vessel lid 17 or vessel body 16. The cooperation between the U-shaped locking block 81 and the adjusting bolt 82 creates a clamping force on the vessel lid 17 and vessel body 16, achieving a secure fastening. The clamping force can be flexibly adjusted by rotating the adjusting bolt 82 to ensure the pressure required for sealing.

[0043] The fastening assembly 8, through the cooperation of the U-shaped locking block 81 and the adjusting bolt 82, achieves precise adjustment of the clamping force, which can be flexibly adjusted according to sealing requirements and equipment conditions to ensure sealing effect. The clamping fixing method ensures even distribution of force, avoiding localized deformation of the vessel cover 17 and vessel body 16, thus improving the structural stability and service life of the equipment. The disassembly and assembly process is simple and convenient, reducing the difficulty of maintenance operations.

[0044] In some embodiments, such as Figure 5 and Figure 6As shown, a gasket 83 is provided between the adjusting bolt 82 and the vessel cover 17 or vessel body 16, placed between the end of the adjusting bolt 82 and the contact surface of the vessel cover 17 or vessel body 16. The size of the gasket 83 is adapted to the end of the adjusting bolt 82 and the contact surface. When the adjusting bolt 82 is rotated to tighten the vessel cover 17 or vessel body 16, the elastic deformation of the gasket 83 buffers the pressure of the adjusting bolt 82, so that the pressure is evenly transmitted to the vessel cover 17 or vessel body 16. At the same time, it increases the contact area, avoids direct squeezing of the end of the adjusting bolt 82, and prevents damage to the surface of the vessel cover 17 or vessel body 16, thus preventing surface wear and protecting the structural integrity of the equipment. This further improves the stability and sealing reliability of the connection between the vessel cover 17 and vessel body 16, and meets the usage requirements under high pressure conditions.

[0045] In summary, this utility model, through its reasonable structural design, solves many defects of existing gas transmission devices, improves the corrosion protection capability of the reactor, the stability assurance effect of the catalyst, the accuracy of process parameter monitoring, and the safety emergency response capability, and is suitable for various high-pressure hydrogenation reaction scenarios.

[0046] Regarding the embodiments of this utility model, it should also be noted that, without conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. The scope of protection of the present utility model should be determined by the scope of the claims. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-pressure gas transmission system applied to a reaction vessel (1), characterized in that, The high-pressure gas transmission system includes a switching valve (2), a gas transmission needle valve (3), a gas flow meter (4), a check valve (5), a back pressure valve (6), and a wet flow meter (7); the gas transmission needle valve (3) is connected to the gas flow meter (4) to form a parallel pipeline, and the switching valve (2), the parallel pipeline, the check valve (5), the reactor (1), the back pressure valve (6), and the wet flow meter (7) are connected in series in sequence, and the switching valve (2) is connected to the high-pressure gas source; the reactor (1) is equipped with a pressure detection unit (11) and a pressure relief valve (12), and the pressure detection unit (11) is used to detect the pressure inside the reactor (1) in real time and transmit the data to the control terminal of the reactor (1).

2. The high-pressure gas transmission system according to claim 1, characterized in that, The reactor (1) is equipped with an inlet needle valve (13), and the one-way valve (5) is connected to the inlet needle valve (13) through a pipeline.

3. The high-pressure gas transmission system according to claim 1, characterized in that, The reactor (1) is equipped with a gas outlet needle valve (14), which is connected to the back pressure valve (6) through a pipeline.

4. The high-pressure gas transmission system according to claim 1, characterized in that, The reactor (1) is equipped with a liquid-taking needle valve (15).

5. The high-pressure gas transmission system according to claim 1, characterized in that, The reactor (1) includes a vessel body (16) and a vessel cover (17), which is sealed to the vessel body (16).

6. The high-pressure gas transmission system according to claim 5, characterized in that, A PPL sealing ring (18) is also provided between the lid (17) and the body (16).

7. The high-pressure gas transmission system according to claim 5, characterized in that, The reactor (1) also includes a fastening assembly (8) for connecting and fixing the reactor cover (17) and the reactor body (16).

8. The high-pressure gas transmission system according to claim 7, characterized in that, The fastening assembly (8) includes a U-shaped locking block (81) and an adjusting bolt (82). The opening of the U-shaped locking block (81) engages with the joint between the lid (17) and the body (16). A threaded hole is provided on one side of the U-shaped locking block (81), and the adjusting bolt (82) is screwed into the threaded hole. The adjusting bolt (82) presses the lid (17) or the body (16) to clamp and fasten the lid (17) and the body (16).

9. The high-pressure gas transmission system according to claim 8, characterized in that, A gasket (83) is also provided between the adjusting bolt (82) and the lid (17) or the body (16).

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