Reaction kettle pressure relief system

Abstract

The utility model provides a kind of reaction kettle pressure relief system, including first pressure relief main pipeline, first pressure relief branch pipeline, second pressure relief branch pipeline, second pressure relief main pipeline, nitrogen purging device and collection device.First pressure relief main pipeline is connected with reaction kettle, first pressure relief branch pipeline is connected with the downstream of first pressure relief main pipeline, and bursting disc is equipped on first pressure relief branch pipeline.Second pressure relief branch pipeline is connected with the downstream of first pressure relief main pipeline.Second pressure relief main pipeline is connected with the downstream of first pressure relief branch pipeline and the downstream of second pressure relief branch pipeline, and pneumatic seal valve is equipped on second pressure relief main pipeline.Nitrogen purging device is connected with second pressure relief main pipeline.The utility model uses the pressure relief mechanism of bursting disc passive pressure relief and pneumatic pressure relief valve active auxiliary pressure relief, and bursting disc realizes automatic burst to realize fast pressure relief, and pressure relief branch can ensure that pressure in kettle falls rapidly to safety range when pressure relief speed is insufficient, to avoid overpressure accident.

Description

Technical Field

[0001] This utility model belongs to the field of precursor preparation technology, specifically relating to a reaction vessel depressurization system. Background Technology

[0002] In the process of preparing semiconductor precursors such as triethylgallium, various chemical reactions, including the decomposition reaction of the precursor, are carried out in a reactor. During the reaction, the pressure inside the reactor can increase significantly due to the intensity of the reaction or the generation of byproduct gases. When the pressure inside the reactor exceeds the limit, it is necessary to depressurize the reactor in a timely manner to ensure process safety.

[0003] Currently, most reactor pressure relief methods employ conventional rupture disc type pressure relief valves, simple manual pressure relief devices, or general explosion-proof pressure relief structures. These methods can only provide basic overpressure rupture relief and have low reliability. Rupture disc type pressure relief valves require shutdown and replacement after activation, making continuous use impossible. Simple manual pressure relief devices rely on manual operation, have a delayed response, and are ill-suited for handling sudden overpressure situations. General explosion-proof pressure relief structures lack active control over the release path and the ability to maintain a seal, easily leading to the leakage of harmful gases, and cannot effectively treat the released materials. Utility Model Content

[0004] The purpose of this invention is to provide a reactor depressurization system to solve the problems of low reliability in existing reactor depressurization methods.

[0005] To achieve the above objectives, a specific embodiment of this utility model provides a reactor pressure relief system, which includes a first pressure relief main pipeline, a first pressure relief branch pipeline, a second pressure relief branch pipeline, a second pressure relief main pipeline, a nitrogen purging device, and a collection device. The first pressure relief main pipeline is connected to the reactor. The first pressure relief branch pipeline is connected to the downstream end of the first pressure relief main pipeline, and a rupture disc is installed on the first pressure relief branch pipeline. The second pressure relief branch pipeline is connected to the downstream end of the first pressure relief main pipeline, and a pneumatic pressure relief valve and a first check valve are installed on the second pressure relief branch pipeline. The second pressure relief main pipeline is connected to the downstream end of both the first and second pressure relief branch pipelines, and a pneumatic sealing valve is installed on the second pressure relief main pipeline. The nitrogen purging device is connected to the second pressure relief main pipeline and is located downstream of the pneumatic sealing valve. The collection device is connected downstream of the second pressure relief main pipeline. The collection device is used to collect the medium discharged from the pressure relief of the reactor. The collection device includes a separator connected to the second pressure relief main pipeline and a tail gas treatment device located downstream of the separator.

[0006] In one or more embodiments of this utility model, the pneumatic pressure relief valve is located upstream of the first check valve.

[0007] In one or more embodiments of the present invention, the reactor pressure relief system further includes a first pressure detection device disposed in the reactor, a second pressure detection device disposed in the first pressure relief main pipeline, and a valve controller electrically connected to the first pressure detection device and the second pressure detection device. The valve controller can adjust the opening and closing states of the pneumatic pressure relief valve and the pneumatic sealing valve.

[0008] In one or more embodiments of this utility model, the collection device further includes a flame arrester disposed between the liquid separator and the exhaust gas treatment equipment.

[0009] In one or more embodiments of this utility model, the exhaust gas treatment equipment includes a dry scrubbing tower, a wet scrubbing tower, or a high-temperature decomposition furnace.

[0010] In one or more embodiments of this utility model, a second check valve is provided on the pipeline between the second pressure relief main pipeline and the collecting device.

[0011] In one or more embodiments of this utility model, at least two second pressure relief branch pipelines are provided.

[0012] In one or more embodiments of this utility model, the inner diameter of the second pressure relief main pipeline is larger than the inner diameter of the first pressure relief main pipeline.

[0013] Compared with the prior art, this utility model adopts a pressure relief mechanism of passive pressure relief by rupture disc and active pressure relief by pneumatic pressure relief valve. When the internal pressure of the reactor exceeds the limit, the rupture disc will automatically rupture first to achieve rapid pressure relief. If the pressure relief speed is insufficient, the pneumatic pressure relief valve can be opened in time to increase the discharge flow rate and ensure that the pressure inside the reactor drops back to a safe range quickly, thereby avoiding overpressure accidents.

[0014] After depressurization, the nitrogen purging device purges the pipeline to remove any residual flammable or toxic media. At the same time, it maintains a slight positive pressure in the pipeline to prevent the backflow of external impurities or moisture, thus avoiding secondary pollution and equipment corrosion, and improving the safety and reliability of the system. Attached Figure Description

[0015] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the reactor pressure relief system in one embodiment of the present invention.

[0017] Key reference numerals in the attached drawings: 1. Reactor; 2. First pressure relief main pipeline; 3. First pressure relief branch pipeline; 4. Rupture disc; 5. Second pressure relief branch pipeline; 6. Pneumatic pressure relief valve; 7. First check valve; 8. Second pressure relief main pipeline; 9. Pneumatic sealing valve; 10. Nitrogen purging device; 11. First pressure detection device; 12. Second pressure detection device; 13. Collection device; 131. Separating tank; 132. Tail gas treatment equipment; 133. Flame arrester; 14. Second check valve. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0019] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the term "first" is used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In one embodiment, reference is made to Figure 1As shown, this utility model provides a reactor pressure relief system, which includes a first pressure relief main pipeline 2, a first pressure relief branch pipeline 3, a second pressure relief branch pipeline 5, a second pressure relief main pipeline 8, a nitrogen purging device 10, and a collection device 13. The first pressure relief main pipeline 2 is connected to the inner cavity of the reactor 1. The first pressure relief branch pipeline 3 and the second pressure relief branch pipeline 5 are connected in parallel and are both connected to the downstream of the first pressure relief main pipeline 2. A rupture disc 4 is installed on the first pressure relief branch pipeline 3. A pneumatic pressure relief valve 6 and a first check valve 7 are installed on the second pressure relief branch pipeline 5, and the pneumatic pressure relief valve 6 and the first check valve 7 are connected in series. The second pressure relief main pipeline 8 is connected to the downstream of the first pressure relief branch pipeline 3 and simultaneously connected to the downstream of the second pressure relief branch pipeline 5. A pneumatic sealing valve 9 is installed on the second pressure relief main pipeline 8. The nitrogen purging device 10 is connected to the second pressure relief main pipeline 8 and is located downstream of the pneumatic sealing valve 9. The collection device 13 is connected downstream of the second pressure relief main pipeline 8. The collection device 13 includes a separator 131 and a tail gas treatment device 132. The collection device 13 is used to collect the medium discharged from the reactor 1, preventing the release of harmful or flammable and explosive media into the environment directly, realizing the centralized recovery and subsequent safe treatment of the released media, and improving the environmental protection and safety of the entire system.

[0022] According to the above structural design, when the pressure inside the reactor 1 exceeds the limit, the pneumatic sealing valve 9 is opened, and the pressure in the first pressure relief branch reaches the set pressure of the rupture disc 4. The rupture disc 4 will automatically rupture, and the medium in the reactor 1 can be quickly discharged from the reactor 1 through the first pressure relief main line 2, the first pressure relief branch and the second pressure relief main line 8, realizing the first stage of pressure relief of the reactor 1.

[0023] Meanwhile, on-site personnel can monitor the pressure inside the reactor 1 in real time through pressure sensors and other components installed inside the reactor 1. If it is found that the pressure inside the reactor drops slowly after the rupture disc 4 releases pressure, or if the pressure continues to be higher than the safety limit, the pneumatic pressure relief valve 6 on the second pressure relief branch will be opened to assist in pressure relief, thereby increasing the flow rate of the medium and ensuring that the pressure inside the reactor 1 quickly returns to the safe range.

[0024] During the depressurization process, the collection device 13 can collect the medium discharged from the reactor 1, preventing the release of harmful or flammable and explosive media directly into the environment, thus improving the environmental friendliness and safety of the entire system. After the depressurization is completed, first close the pneumatic depressurization valve 6, then close the pneumatic sealing valve 9, and then turn on the nitrogen purging device 10. After the nitrogen output from the nitrogen purging device 10 enters the second depressurization main pipeline 8, it can remove the residual flammable or toxic media in the pipeline, preventing these media from accumulating in the second depressurization main pipeline 8. On the other hand, it can maintain a slight positive pressure in the second depressurization main pipeline 8, preventing impurities or moisture from the second depressurization main pipeline 8 or the external environment from being back-drawn into the second depressurization main pipeline 8.

[0025] In one embodiment, reference is made to Figure 1 As shown, in the second pressure relief branch pipeline 5, the pneumatic pressure relief valve 6 is located upstream of the first check valve 7. When the pneumatic pressure relief valve 6 opens to relieve pressure, the medium in the pipeline flows from upstream to downstream. The first check valve 7 can effectively prevent the medium in the downstream pipeline from flowing back into the pneumatic pressure relief valve 6 and the reactor 1, avoiding secondary pollution or equipment damage caused by backflow. At the same time, since the first check valve 7 is located downstream of the pneumatic pressure relief valve 6, when the pneumatic pressure relief valve 6 is in the closed state, the first check valve 7 can isolate the downstream back pressure, so that the outlet side of the pneumatic pressure relief valve 6 is always in a low-pressure environment, thereby reducing the back pressure resistance that the pneumatic pressure relief valve 6 needs to overcome when opening, and improving the pressure relief response speed and discharge stability.

[0026] In one embodiment, reference is made to Figure 1 As shown, at least two second pressure relief branch lines 5 are provided, and these second pressure relief branch lines 5 are arranged in parallel. By connecting multiple second pressure relief branch lines 5 in parallel, one or more second pressure relief branch lines 5 can be selectively activated according to the overpressure level or pressure relief requirements of the reactor 1, thereby achieving graded and adjustable pressure relief flow control, avoiding excessively slow pressure relief due to insufficient pressure relief capacity of a single branch, or drastic pressure fluctuations inside the reactor 1 due to excessively rapid pressure relief.

[0027] In addition, the parallel structure of the second pressure relief branch pipeline 5 provides redundancy. When the pneumatic pressure relief valve 6 or check valve of one of the second pressure relief branch pipelines 5 fails and needs to be repaired, the remaining second pressure relief branch pipelines 5 can still independently complete the pressure relief task, ensuring uninterrupted operation of the system during maintenance and significantly improving the reliability of the entire pressure relief system.

[0028] In one embodiment, reference is made to Figure 1As shown, the reactor pressure relief system also includes a first pressure detection device 11, a second pressure detection device 12, and a valve controller. The first pressure detection device 11 is installed in the reactor 1 to monitor the pressure inside the reactor 1 in real time. The second pressure detection device 12 is installed in the first pressure relief main pipeline 2 to monitor the pressure changes in the first pressure relief main pipeline 2 in real time, in order to determine whether the pressure relief channel is unobstructed and whether the rupture disc 4 has been activated. The valve controller is electrically connected to the first pressure detection device 11 and the second pressure detection device 12. The valve controller can receive the pressure signals collected by the first pressure detection device 11 and the second pressure detection device 12, and automatically adjust the opening and closing states of the pneumatic pressure relief valve 6 and the pneumatic sealing valve 9 according to a preset control strategy.

[0029] Specifically, during normal reaction, the valve controller keeps the pneumatic sealing valve 9 and each pneumatic pressure relief valve 6 closed, ensuring the reactor 1 operates in a sealed environment. When the first pressure detection device 11 detects that the internal pressure of the reactor 1 exceeds the limit, the valve controller first opens the pneumatic sealing valve 9, connecting the second pressure relief main pipeline 8. If the pressure continues to rise and reaches the set value of the rupture disc 4, the rupture disc 4 ruptures, and the medium begins to be released. At this time, the second pressure detection device 12 can detect the sudden pressure drop in the first pressure relief main pipeline 2, and the valve controller determines that the rupture disc 4 has activated.

[0030] If the first pressure detection device 11 shows that the pressure drop rate inside the reactor is still slow, the valve controller will open one or more pneumatic pressure relief valves 6 on the second pressure relief branch as needed, based on the pressure difference, to achieve staged active pressure relief. When the first pressure detection device 11 shows that the pressure inside the reactor 1 has dropped back to the safe range, the valve controller will first close all the opened pneumatic pressure relief valves 6, then close the pneumatic sealing valve 9, and finally trigger the nitrogen purging device 10 to purge the pipeline.

[0031] Through the coordinated operation of the first pressure detection device 11, the second pressure detection device 12 and the valve controller, the system can automatically identify the overpressure level, determine whether the rupture disc 4 is effective, and intelligently activate the redundant pressure relief branch. This avoids the uncontrollability of single passive pressure relief and prevents misoperation caused by sensor misjudgment, significantly improving the automation level and operational reliability of the pressure relief system.

[0032] Furthermore, both the first pressure detection device 11 and the second pressure detection device 12 can be selected as pressure transmitters with explosion-proof function to adapt to the flammable and explosive characteristics that may exist in the medium inside the reactor 1, and to ensure safe and reliable detection.

[0033] Furthermore, the valve controller can be a programmable logic controller or a distributed control system, used to receive pressure signals and automatically control the opening and closing of the pneumatic sealing valve 9 and the pneumatic pressure relief valve 6 according to preset logic, so as to realize the automation of the pressure relief process.

[0034] In one embodiment, reference is made to Figure 1 As shown, one interface at the top of the separator 131 of the collection device 13 is connected to the second pressure relief main pipeline 8. The exhaust gas treatment device 132 is located downstream of the separator 131, and the other interface at the top of the separator 131 is connected to the exhaust gas treatment device 132 via a pipeline. After the medium in the second pressure relief main pipeline 8 enters the separator 131, the liquid phase component of the medium is deposited inside the separator 131 due to gravity, thus achieving the collection of the liquid phase component of the medium. The gaseous phase component of the medium is then transported to the downstream exhaust gas treatment device 132 via the other interface at the top of the separator 131 through a pipeline. After the gaseous phase component of the medium enters the exhaust gas treatment device 132, the exhaust gas treatment device 132 can purify the gas phase to remove harmful components and ensure safe emissions.

[0035] Furthermore, the exhaust gas treatment equipment 132 can be adapted to the gaseous composition of the medium and the treatment requirements. As a non-limiting example, when flammable and explosive triethylgallium needs to be adsorbed, the exhaust gas treatment equipment 132 can be a dry scrubbing tower, where gaseous triethylgallium reacts and is converted into solid salts. As another non-limiting example, when acidic or water-soluble gases in the exhaust gas need to be absorbed, the exhaust gas treatment equipment 132 can be a wet scrubbing tower, where harmful components in the gaseous phase are absorbed and removed after contact with the scrubbing liquid. As yet another non-limiting example, when high-concentration, difficult-to-adsorb gaseous media need to be decomposed at high temperature, the exhaust gas treatment equipment 132 can be a high-temperature decomposition furnace, where gaseous organic matter is thermally decomposed into harmless small molecules at high temperature.

[0036] Furthermore, the collection device 13 also includes a flame arrester 133, which is installed on the pipeline between the liquid separator 131 and the exhaust gas treatment equipment 132. The flame arrester 133 can prevent the spread of flames generated in the pipeline, and prevent backfire explosions of flammable gases in the exhaust gas treatment equipment 132 or the liquid separator 131, thereby effectively isolating upstream and downstream fire hazards and improving the safety protection level of the entire pressure relief system. The flame arrester 133 can be a pipeline type or a shell type. Depending on the installation location and explosion-proof rating, a fire-resistant flame arrester or an explosion-proof flame arrester can also be selected to meet the safety requirements for backfire prevention in the pipeline.

[0037] Furthermore, referring to Figure 1 As shown, a second check valve 14 is provided on the pipeline between the second pressure relief main pipeline 8 and the liquid separator 131 of the collection device 13. The second check valve 14 can prevent the liquid or gaseous medium in the liquid separator 131 from flowing back into the second pressure relief main pipeline 8 when the system stops depressurizing, thereby avoiding pollution, corrosion or safety accidents caused by backflow of the medium. At the same time, it protects the upstream valves and pipeline components from the impact of reverse medium, thereby improving the safety and reliability of the system.

[0038] In one embodiment, the inner diameter of the second pressure relief main pipe 8 is larger than that of the first pressure relief main pipe 2. The first pressure relief main pipe 2 bears the initial discharge flow from the reactor 1. The second pressure relief main pipe 8 needs to collect all the discharge media from the first and second pressure relief branches, and the total discharge flow rate is significantly increased. The use of a larger inner diameter in the second pressure relief main pipe 8 can effectively reduce flow resistance and pressure loss, avoid secondary throttling or back pressure increase due to too small a pipe diameter, and ensure a smooth discharge process.

[0039] In one embodiment, the pneumatic sealing valve 9 can be a pneumatic ball valve or a pneumatic butterfly valve, and the specific type can be selected according to the pipeline diameter, sealing requirements and adaptability to operating conditions.

[0040] Furthermore, the pneumatic pressure relief valve 6 can be a pneumatic ball valve, a pneumatic shut-off valve, or a pneumatic angle seat valve. The specific type can be selected based on the pressure relief response speed, operating frequency, and flow characteristics.

[0041] Furthermore, the first check valve 7 and the second check valve 14 can be selected as swing check valves, lift check valves or spring check valves, and the specific type can be selected according to the pipeline layout, installation direction and backflow prevention requirements.

[0042] In one embodiment, the nitrogen purging device 10 includes a nitrogen source, a delivery pipeline, and a control valve. The nitrogen source is used to provide high-pressure nitrogen, the delivery pipeline connects the nitrogen source to the second pressure relief main pipeline 8, and the control valve is used to open or close the nitrogen purging.

[0043] The above is a general description of the structure of the reactor pressure relief system in this utility model. The following is a further introduction to its specific usage process.

[0044] In practical applications, during the normal reaction process of reactor 1, the valve controller controls the pneumatic sealing valve 9 and each pneumatic pressure relief valve 6 to remain closed, and reactor 1 is in a closed operation state. The first pressure detection device 11 monitors the pressure inside the reactor in real time, and the second pressure detection device 12 monitors the pressure of the first pressure relief main pipeline 2.

[0045] When the internal pressure of reactor 1 gradually increases due to violent reaction or the generation of by-product gas, causing the internal pressure of reactor 1 to exceed the limit, the valve controller first automatically opens the pneumatic sealing valve 9 on the second pressure relief main pipeline 8, so that the pressure relief channel is connected to the downstream collection device 13.

[0046] If the pressure inside the reactor continues to rise and reaches the set pressure of the rupture disc 4 on the first pressure relief branch, the rupture disc 4 will automatically rupture, and the medium inside the reactor 1 will be quickly discharged into the collection device 13 through the first pressure relief main line 2, the first pressure relief branch, and the second pressure relief main line 8, completing the first stage of passive pressure relief. During this process, because the inner diameter of the second pressure relief main line 8 is larger than that of the first pressure relief main line 2, the flow resistance can be effectively reduced, back pressure can be prevented from rising, and smooth discharge can be ensured.

[0047] If the first pressure detection device 11 indicates that the pressure drop rate inside the vessel is still slow after the rupture disc 4 releases pressure, or if the pressure remains above the safety limit, the valve controller selectively opens one or more pneumatic pressure relief valves 6 on the second pressure relief branch based on the pressure difference, initiating the second-stage active auxiliary pressure relief. Multiple parallel second pressure relief branches can be activated in stages according to the degree of overpressure, avoiding both insufficient pressure relief and drastic pressure fluctuations in the pipeline. Simultaneously, the first check valve 7 located downstream of the pneumatic pressure relief valve 6 effectively prevents backflow of downstream media, reduces back pressure when the pressure relief valve opens, and improves response speed and discharge stability.

[0048] When the first pressure detection device 11 detects that the pressure inside the reactor 1 has dropped to a safe range, the valve controller first closes all open pneumatic pressure relief valves 6, then closes the pneumatic sealing valve 9, and then automatically starts the nitrogen purging device 10. Nitrogen enters the second pressure relief main pipeline 8 to remove any residual flammable or toxic media in the pipeline and prevent media accumulation.

[0049] After nitrogen purging, replace the rupture disc 4 on the first pressure relief branch pipe 3 to restore its pressure relief protection function. During the replacement of the rupture disc 4, since the second pressure relief branch pipe 5 is connected in parallel and operates independently, it can remain in a ready-to-open state without affecting the normal operation of the reactor 1. Furthermore, if the first and second pressure relief branches require maintenance, one branch can be isolated for maintenance while the other branches remain readily available, ensuring the system maintains stable pressure relief capability during partial maintenance.

[0050] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure relief system for a reaction vessel, characterized in that, The reactor pressure relief system includes: The first pressure relief main pipeline (2) is connected to the reactor (1); The first pressure relief branch pipeline (3) is connected to the downstream of the first pressure relief main pipeline (2), and the first pressure relief branch pipeline (3) is equipped with a rupture disc (4). The second pressure relief branch pipeline (5) is connected to the downstream of the first pressure relief main pipeline (2). The second pressure relief branch pipeline (5) is equipped with a pneumatic pressure relief valve (6) and a first check valve (7). The second pressure relief main pipeline (8) is connected to the downstream of the first pressure relief branch pipeline (3) and the downstream of the second pressure relief branch pipeline (5). A pneumatic sealing valve (9) is provided on the second pressure relief main pipeline (8). A nitrogen purging device (10) is connected to the second pressure relief main pipeline (8), and the nitrogen purging device (10) is located downstream of the pneumatic sealing valve (9); The collection device (13) is connected to the downstream of the second pressure relief main pipeline (8). The collection device (13) is used to collect the medium discharged from the pressure relief of the reactor (1). The collection device (13) includes a separator (131) connected to the second pressure relief main pipeline (8) and a tail gas treatment device (132) located downstream of the separator (131).

2. The reactor depressurization system according to claim 1, characterized in that, The pneumatic pressure relief valve (6) is located upstream of the first check valve (7).

3. The reactor depressurization system according to claim 1, characterized in that, The reactor pressure relief system also includes a first pressure detection device (11) located in the reactor (1), a second pressure detection device (12) located in the first pressure relief main pipeline (2), and a valve controller electrically connected to the first pressure detection device (11) and the second pressure detection device (12). The valve controller can adjust the opening and closing states of the pneumatic pressure relief valve (6) and the pneumatic sealing valve (9).

4. The reactor depressurization system according to claim 1, characterized in that, The collection device (13) also includes a flame arrester (133) disposed between the liquid separator (131) and the exhaust gas treatment device (132).

5. The reactor depressurization system according to claim 1, characterized in that, The exhaust gas treatment equipment (132) includes a dry scrubbing tower, a wet scrubbing tower, or a high-temperature decomposition furnace.

6. The reactor depressurization system according to claim 1, characterized in that, A second check valve (14) is provided on the pipeline between the second pressure relief main pipeline (8) and the collection device (13).

7. The reactor depressurization system according to claim 1, characterized in that, The second pressure relief branch pipeline (5) has at least two parts.

8. The reactor depressurization system according to claim 1, characterized in that, The inner diameter of the second pressure relief main pipeline (8) is larger than the inner diameter of the first pressure relief main pipeline (2).

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