Ventilation and exhaust pipeline for high-pressure reaction kettle

Abstract

The invention discloses a ventilation and exhaust pipeline for a high-pressure reaction kettle, relates to the technical field of high-pressure reaction kettles, and solves the technical problems of pipeline corrosion, poor pressure fluctuation adaptability, low purification efficiency and easiness in blockage in a cold environment in the prior art. Comprising a special-shaped exhaust pipe used for being connected with an exhaust port of a high-pressure reaction kettle; the special-shaped exhaust pipe is provided with a connector section and an inclined section which is inclined downwards; the adsorption treatment assembly comprises an agent storage barrel, the outlet end of an inclined section is inserted below the liquid level of the agent storage barrel, and a plurality of buffer plates for extending a gas path and a distribution plate for breaking bubbles are arranged in the inclined section; by arranging the special-shaped exhaust pipe with the inclined downward section, condensate carried in gas automatically flows back into the agent storage barrel under the action of gravity, pipe wall corrosion caused by long-time retention of the condensate in the pipeline is effectively avoided, and the service life of the exhaust pipeline is remarkably prolonged.

Description

Technical Field

[0001] This invention relates to the field of high-pressure reactor technology, and more particularly to a ventilation and exhaust pipe for high-pressure reactors. Background Technology

[0002] Ventilation and exhaust ducts are piping systems used to discharge gases, vapors, or volatile substances generated inside a reactor. Their main function is to extract harmful gases or volatile substances generated inside the reactor and discharge them outdoors or after treatment.

[0003] In existing technologies, the ventilation and exhaust ducts of high-pressure reactors typically employ the following solutions: (1) Direct-exhaust pipeline: The exhaust port of the reactor is directly connected to the pipeline to the outside. This scheme has a simple structure, but it cannot purify the exhaust gas. The direct emission of toxic and harmful gases causes environmental pollution. At the same time, the high-temperature gas discharged from the reactor is prone to condensation when it encounters cold air in the pipeline. Long-term operation will cause the pipeline to corrode and perforate, resulting in leakage risk.

[0004] (2) Simple gas washing bottle type: A gas washing bottle containing absorbent liquid is connected to the exhaust port of the reactor. The gas is absorbed by bubbling in the gas washing bottle and then discharged. Although this scheme has a certain purification capacity, it has the following defects: ① The gas washing bottle has a small volume, the gas residence time is short, and the absorption efficiency is low; ② The exhaust pressure of the reactor fluctuates greatly. At low pressure, the gas cannot effectively pass through the liquid layer, and at high pressure, it may impact the gas washing bottle and cause the liquid to backflow; ③ There is no heating and insulation measure, and the pipeline is prone to blockage in cold environments; ④ The condensate cannot be effectively collected, and corrosion problems still exist in long-term operation.

[0005] (3) Conventional negative pressure suction system: The reactor is connected to the storage tank and the negative pressure fan, and the negative pressure exhaust is formed by the fan suction. This scheme solves the problem of difficult low-pressure exhaust, but still has the following shortcomings: ① The gas distribution in the storage tank is uneven, the bubbles are large, the gas-liquid contact area is small, and the absorption efficiency needs to be improved; ② When the fan suction force fluctuates, the absorbent liquid is easily drawn into the fan; ③ There is no pressure adaptive adjustment function, and the system stability is poor; ④ The problem of pipeline condensation has not been effectively solved.

[0006] In summary, existing technologies suffer from technical problems such as pipeline corrosion, poor adaptability to pressure fluctuations, low purification efficiency, and susceptibility to blockage in cold environments. Summary of the Invention

[0007] The purpose of this invention is to solve the technical problems of traditional high-pressure reactor ventilation and exhaust pipes, such as pipe corrosion, poor adaptability to pressure fluctuations, low purification efficiency, and easy blockage in cold environments, and to propose a ventilation and exhaust pipe for high-pressure reactors.

[0008] To achieve the above objectives, the present invention employs the following technology: a ventilation and exhaust pipe for a high-pressure reactor, comprising a shaped exhaust pipe for connecting to the exhaust port of the high-pressure reactor; The irregularly shaped exhaust pipe is provided with an interface section and an inclined section that slopes downwards. It also includes: an adsorption treatment component, which includes a storage tank, the outlet end of the inclined section is inserted below the liquid surface of the storage tank, and the inclined section is provided with a plurality of buffer plates for extending the gas path and a distribution plate for breaking bubbles, and the distribution plate is provided with a plurality of arrayed bubble holes. A variable frequency negative pressure device is connected to the storage tank and is used to generate negative pressure in the shaped exhaust pipe, so that the gas enters the absorbent liquid in the storage tank after passing through the interface section, the inclined section, the buffer plate, and the distribution plate in sequence.

[0009] As a ventilation and exhaust pipe for a high-pressure reactor, the high-pressure reactor has an exhaust valve fixedly installed at its exhaust port, the interface section is fixedly connected to the exhaust valve, and the interface section is equipped with a one-way air inlet valve.

[0010] As a ventilation and exhaust pipe for a high-pressure reactor, the interface section adopts one of the following: an elastic corrugated pipe or a metal flexible hose.

[0011] As a ventilation and exhaust pipe for a high-pressure reactor, the inclined section of the shaped exhaust pipe is wrapped with an outer sleeve. A heating layer and an insulation layer are provided inside the outer sleeve. The insulation layer is wrapped around the heating layer to reduce heat loss. The insulation layer is filled with insulation cotton. The heating layer is a self-regulating electric heating tape, which is evenly laid along the length of the inclined section to heat the gas in the inclined section and prevent condensation.

[0012] As a ventilation and exhaust pipe for a high-pressure reactor, the storage tank is equipped with a partition plate to divide the inside of the tank into a processing zone and a buffer zone. The processing zone is used to contain the absorbent liquid. The outlet of the inclined section is inserted below the liquid surface of the processing zone. The buffer zone is connected to the processing zone above the liquid surface. The air inlet of the variable frequency negative pressure device is connected to the buffer zone, so that the gas treated by the absorbent liquid enters the buffer zone and is then extracted.

[0013] As a ventilation and exhaust pipe for a high-pressure reactor, the variable frequency negative pressure device includes a negative pressure fan fixed on the storage cylinder and a frequency converter connected thereto. The frequency converter is used to adjust the speed of the negative pressure fan according to the exhaust pressure of the reactor, so as to maintain a stable negative pressure state in the shaped exhaust pipe.

[0014] As a ventilation and exhaust pipe for a high-pressure reactor, the buffer plate is a staggered baffle plate used to extend the residence time of the gas in the inclined section, so that the gas is fully mixed and cooled before entering the distribution plate.

[0015] As a ventilation and exhaust pipe for a high-pressure reactor, the diameter of the bubble holes in the distribution plate is 0.5-2 mm. After the gas is broken into tiny bubbles by the distribution plate, it enters the absorption liquid, increasing the gas-liquid contact area.

[0016] As a ventilation and exhaust pipe for a high-pressure reactor, the storage cylinder is provided with a liquid inlet and a drain outlet on its side, and a liquid level observation window is provided on its side wall.

[0017] In summary, due to the adoption of the above-mentioned technology in the ventilation and exhaust pipe for a high-pressure reactor, the beneficial effects of this invention are: (1) By setting up an irregular exhaust pipe with a downward inclined section, the condensate entrained in the gas can automatically flow back into the storage tank under the action of gravity, which effectively avoids pipe wall corrosion caused by the condensate staying in the pipe for a long time, significantly extends the service life of the exhaust pipe, and solves the technical problem that traditional exhaust pipes are prone to liquid accumulation due to gas condensation, and long-term operation leads to pipe corrosion and perforation.

[0018] (2) By setting buffer plates and distribution plates in the inclined section, the buffer plates are set as staggered baffles. When the gas flows in the inclined section, it is blocked by the buffer plates and forms multiple reversals, which significantly prolongs the gas residence time, so that the high temperature gas is fully cooled and the multi-component gas is fully mixed, creating favorable conditions for subsequent efficient absorption. At the same time, the gas temperature is reduced and the evaporation loss of the absorbent is reduced. The distribution plate breaks the gas into tiny bubbles and then enters the absorbent, which significantly increases the gas-liquid contact area and improves the gas purification efficiency. This solves the technical problems of large bubbles, short gas-liquid contact time and low purification efficiency of traditional bubbling absorption devices mentioned in the background art.

[0019] (3) The present invention sets up a frequency conversion negative pressure device connected to the storage tank and a one-way air inlet valve on the interface section. The frequency conversion negative pressure device adjusts the fan speed in real time according to the exhaust pressure of the reactor, so that the special-shaped exhaust pipe maintains a stable negative pressure state. The one-way air inlet valve automatically closes when the negative pressure disappears, effectively preventing the backflow of the absorbent liquid. This solves the technical problem proposed in the background art that the exhaust pressure of the reactor fluctuates greatly, the waste gas cannot effectively pass through the absorbent liquid layer when the pressure is low, and the absorbent device may be impacted when the pressure is high, causing the liquid to backflow.

[0020] (4) The present invention divides the storage tank into a treatment zone and a buffer zone by setting a partition plate inside the storage tank. The treatment zone is used for bubbling absorption, and the buffer zone is used for gas-liquid separation and pressure buffering. The partition plate blocks the foam generated in the treatment zone from entering the buffer zone, preventing the foam from being sucked into the negative pressure device. At the same time, the buffer zone provides a stable buffer space for the gas, further reducing the impact of negative pressure fluctuations on the system.

[0021] (5) The present invention wraps an outer tube with a heating layer and an insulation layer around the inclined section. The heating layer uses a self-regulating electric heating tape, which can automatically adjust the heat generation according to the temperature of different sections of the pipeline to achieve precise temperature control. The insulation layer reduces heat loss and ensures that the gas temperature in the inclined section is always maintained above the dew point, fundamentally preventing the formation of condensate. This solves the technical problem mentioned in the background art that the pipeline is prone to blockage in cold environments, affecting the smoothness of exhaust.

[0022] (6) By setting a number of bubble holes in the distribution plate with a bubble hole diameter of 0.5 to 2 mm, the gas entering the inclined section can be broken into tiny bubbles with a diameter of 0.5 to 2 mm by the distribution plate and then enter the absorbent liquid. Under the premise of ensuring low gas resistance, the maximum gas-liquid contact area is obtained, which is particularly suitable for the efficient purification of gases with low solubility in the absorbent liquid. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure according to the present invention is shown; Figure 2 A schematic diagram of the storage cylinder structure according to the present invention is shown; Figure 3 A schematic diagram showing the cross-section of the storage cylinder and the connection structure of the frequency conversion negative pressure device according to the present invention is shown; Figure 4 A top view of the cross-sectional structure of the storage tank according to the present invention is shown; Figure 5 A schematic diagram of the entire irregular exhaust pipe structure according to the present invention is shown; Figure 6 A schematic diagram of the inclined section and outer sleeve of the irregular exhaust pipe according to the present invention is shown; Figure 7 A schematic diagram of the inclined section end of the irregular exhaust pipe and the cross-sectional structure of the reservoir according to the present invention is shown; Figure 8 A block diagram illustrating the principle modules according to the present invention is shown.

[0024] Legend: 1. High-pressure reactor; 11. Exhaust valve; 2. Special-shaped exhaust pipe; 21. Interface section; 22. Inclined section; 23. Buffer plate; 24. Distribution plate; 25. Bubble hole; 26. One-way air inlet valve; 3. Variable frequency negative pressure device; 31. Negative pressure fan; 32. Frequency converter; 4. Adsorption treatment component; 41. Storage tank; 42. Divider plate; 43. Drain outlet; 44. Liquid inlet; 45. Liquid level observation window; 46. Gas channel; 47. Interface groove; 401. Treatment area; 402. Buffer zone; 5. Outer jacket; 51. Heating layer; 52. Insulation layer. Detailed Implementation

[0025] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a ventilation and exhaust pipe for a high-pressure reactor. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1-8 As shown, a ventilation and exhaust pipe for a high-pressure reactor includes a special-shaped exhaust pipe 2, an adsorption treatment component 4, and a frequency conversion negative pressure device 3. The special-shaped exhaust pipe 2 is used to connect to the exhaust port of the high-pressure reactor 1. The special-shaped exhaust pipe 2 is provided with an interface section 21 and an inclined section 22 with a downward slope, which can make the condensate entrained in the gas automatically flow back under the action of gravity, effectively avoiding the corrosion of the pipe wall caused by the condensate staying in the pipe for a long time. The adsorption treatment component 4 includes a storage cylinder 41, the outlet end of the inclined section 22 is inserted below the liquid surface of the storage cylinder 41, and a number of buffer plates 23 for extending the gas path and a distribution plate 24 for breaking bubbles are provided in the inclined section 22. The distribution plate 24 has a number of arrayed bubble holes 25 for breaking the gas into bubbles. The variable frequency negative pressure device 3 is connected to the storage tank 41 and is used to generate negative pressure in the shaped exhaust pipe 2 so that the gas enters the absorbent liquid in the storage tank 41 after passing through the interface section 21, the inclined section 22, the buffer plate 23, and the distribution plate 24 in sequence. The variable frequency negative pressure device 3 includes a negative pressure fan 31 fixed on the storage cylinder 41 and a frequency converter 32 connected thereto. The top surface of the storage cylinder 41 is provided with an interface groove 47, and the input end of the negative pressure fan 31 is threaded into the interface groove 47. The frequency converter 32 is used to adjust the speed of the negative pressure fan 31 according to the real-time pressure value when the exhaust pressure of the reactor fluctuates: when the exhaust pressure increases, the speed is increased to maintain a stable negative pressure suction force; when the exhaust pressure decreases, the speed is reduced to prevent the absorbent liquid from being excessively sucked up.

[0027] Through the above adjustments, a stable negative pressure is maintained inside the shaped exhaust pipe 2, avoiding a decrease in gas treatment efficiency or backflow of absorbent liquid due to pressure fluctuations.

[0028] In this embodiment, as a preferred implementation, the interface section 21 adopts one of elastic corrugated pipe or metal flexible hose. Compared with traditional rubber material, it has a certain degree of flexibility (compensating for displacement and shock absorption), can withstand high pressure and high temperature, and has a corrosion resistance far superior to rubber. It should be noted that a one-way air inlet valve 26 is provided on the interface section 21. The one-way air inlet valve 26 is linked with the variable frequency negative pressure device 3. The one-way air inlet valve 26 can be a solenoid valve, interlocked with the start and stop signals of the variable frequency negative pressure device 3, or automatically controlled by a pressure sensor after detecting pressure changes in the reactor. When the variable frequency negative pressure device 3 switches from the running state to the stop state, or when the rate of pressure drop in the reactor exceeds a preset threshold, the one-way air inlet valve 26 automatically closes to prevent backflow of the absorbent liquid due to the disappearance of negative pressure. This part is controlled by an external PLC controller, which is existing technology and its working principle has been disclosed. This embodiment will not be described in detail.

[0029] To verify the effect of different buffer plate arrangements on gas mixing uniformity, the experimental conditions are shown in the table below:

[0030] The parameters for setting up the buffer plate are shown in the table below:

[0031] Note: The above test uses a multi-point concentration sampling method: gas samples are collected at different locations on the outlet section of the inclined section (center point, 1 / 3R from the center, and pipe wall) to determine the CO2 concentration.

[0032] The experimental results are shown in the table below:

[0033] Note: CV value (coefficient of variation) = (standard deviation of concentration ÷ average concentration) × 100%. A smaller CV value indicates a more uniform concentration distribution and a better mixing effect. The results show that setting up buffer plates and using a staggered arrangement can achieve thorough mixing of the gas in the inclined section, reducing the concentration variation coefficient to below 2.2%, and improving the mixing uniformity by about 88% compared to the scheme without buffer plates. This effect cannot be achieved by a single buffer plate or a unidirectional arrangement, demonstrating the unexpected technical benefits of the staggered arrangement.

[0034] Combination Figure 5In order to solve the problem of condensation of gas discharged from the exhaust port of traditional reactor, an outer sleeve 5 is wrapped around the inclined section 22. A heating layer 51 and an insulation layer 52 are provided inside the outer sleeve 5, and the insulation layer 52 is wrapped around the heating layer 51. Specifically, the heating layer 51 is a self-regulating electric heating tape, which is uniformly laid along the length of the inclined section 22. It should be noted that it is not necessary to lay the heating tape along the entire inclined section 22; it can be laid off at a certain distance from the distribution plate 24. When the ambient temperature is lower than the preset value, the heating layer 51 heats the gas in the inclined section 22 to prevent condensation. The insulation layer 52 is filled with insulation cotton, which can reduce the heat loss of the heating layer 51.

[0035] Combination Figures 3-4 To prevent excessive negative pressure from causing siphoning, a partition plate 42 is provided inside the storage cylinder 41 to divide the inside of the cylinder into a processing zone 401 and a buffer zone 402. The treatment zone 401 is used to contain the absorbent liquid. The outlet of the inclined section 22 is inserted below the liquid surface of the treatment zone 401, which allows the gas to bubble in the absorbent liquid to generate foam. The top of the partition plate 42 is lower than the top wall of the storage cylinder 41 but higher than the normal liquid level of the treatment zone 401, forming a gas channel 46 between the two sides of the partition plate 42 and the inner wall of the cylinder. This gas channel 46 allows the absorbed gas to pass through and be drawn away from the buffer zone 402 by the negative pressure fan 31. The partition plate 42 effectively prevents foam generated in the treatment zone 401 from entering the buffer zone 402, preventing foam from being sucked into the variable frequency negative pressure device 3. The air inlet of the variable frequency negative pressure device 3 is connected to the buffer zone 402 and is used to extract clean gas that has been treated with the absorbent liquid and had its foam removed.

[0036] In this embodiment, as a preferred implementation, a liquid inlet 44 and a drain outlet 43 are also provided on the side of the storage cylinder 41. Both the drain outlet 43 and the liquid inlet 44 are connected to the treatment area 401. A liquid level observation window 45 is provided on the side wall of the storage cylinder 41 to monitor the absorbent liquid in the treatment area 401 and facilitate the periodic replacement of the absorbent liquid. The above structure allows operators to monitor the absorbent status in real time through the liquid level observation window 45, replenish fresh absorbent through the liquid inlet 44, and periodically discharge waste liquid through the drain outlet 43, ensuring long-term stable operation of the system. This preferred configuration can be selected and configured according to actual working conditions without affecting the basic technical effect of the invention.

[0037] Combination Figures 5-6 In order to solve the problem of mixing and cooling of the gas discharged from the exhaust port of the traditional reactor, several buffer plates 23 are also arranged as baffles in an alternating manner. When the gas temperature entering the inclined section 22 is higher than the preset value or contains multiple components that need to be mixed, the gas is blocked by the buffer plate 23 when flowing in the inclined section 22, which prolongs the residence time of the gas in the inclined section 22, allowing the gas to be fully mixed and cooled before entering the distribution plate 24. After being mixed and cooled, the gas enters the distribution plate 24, and by lowering the gas temperature, the evaporation loss of the absorbent can be reduced. Through thorough mixing, the uniformity of subsequent bubbling absorption can be improved.

[0038] In this embodiment, as a preferred implementation, the diameter of the bubble holes 25 on the distribution plate 24 is 0.5 to 2 mm; When the solubility of the gas being treated in the absorbent is lower than a preset threshold, the gas is broken into tiny bubbles with a diameter of 0.5 to 2 mm by the distribution plate 24 and then enters the absorbent, thereby increasing the absorption efficiency of the low-solubility gas by increasing the gas-liquid contact area.

[0039] To verify the effect of different bubble pore sizes on the purification efficiency, this embodiment uses a typical acidic gas-alkali solution absorption system for testing. This test system is used to simulate acidic components in the exhaust gas from the reactor and is not limited to HCl gas only. The specific test conditions are as follows: Reactor operating conditions: reaction temperature 150℃, exhaust pressure 0.3MPa Simulated exhaust gas composition: 5% HCl + 95% N2 (volume fraction); where HCl is the target pollutant and N2 is an inert carrier gas. This ratio allows for clear observation of differences in absorption effects while ensuring safety, and is used to verify the gas-liquid contact efficiency of the present invention.

[0040] Absorbent: 10% NaOH solution (mass fraction); this concentration ensures sufficient absorption capacity while maintaining a moderate solution viscosity, which will not affect bubble morphology and gas-liquid contact efficiency. Note: It should be noted that the above HCl-NaOH system is only a verification embodiment of the technical solution of the present invention. The gases applicable to the present invention are not limited to HCl. For other acidic gases (such as SO2, H2S, NOx, etc.), alkaline gases (such as NH3), or soluble organic substances (such as alcohols and ketones), similar purification effects can be achieved by selecting appropriate absorption liquids (such as water, acid, alkali, or organic solvents).

[0041] Under the above operating conditions, the removal efficiency of HCl by plates with different pore sizes was tested, and the following comparative and example cases were set up: Comparative Example 1: No distribution plate, gas is discharged directly from the pipe opening; Example 1: Bubble pore diameter 0.3mm; Example 2: Bubble pore diameter 1.0 mm; Example 3: Bubble pore diameter 3.0 mm; Based on the above experimental conditions and parameters, the results are shown in the table below:

[0042] Note: The baseline value in the table refers to the gas-liquid contact area of ​​Comparative Example 1 (without the distribution plate), which is set to 1.0. The gas-liquid contact area multiples of the embodiments are estimated based on the bubble diameter and number, and are compared with Comparative Example 1 as a baseline to qualitatively illustrate the improvement effect of the gas-liquid contact area after the distribution plate is set in this invention.

[0043] Experimental results show that setting a distribution plate can significantly improve gas purification efficiency; a removal rate of over 95% can be achieved when the bubble pore diameter is within the range of 0.5–2 mm; while a diameter that is too small (less than 0.3 mm) can further improve the removal rate, it significantly increases gas resistance and energy consumption; and a diameter that is too large (greater than 3 mm) results in a significant decrease in the removal rate. Therefore, a bubble pore diameter range of 0.5–2 mm is preferred to ensure purification efficiency while also considering system energy consumption.

[0044] To facilitate understanding of this solution by those skilled in the art, the overall working principle of this solution is briefly explained below in conjunction with a specific application scenario: Combination Figures 1-8 The principle of the ventilation and exhaust pipe for a high-pressure reactor provided by this invention is as follows: When the high-pressure reactor 1 needs to be vented, the variable frequency negative pressure device 3 is first turned on to establish negative pressure. The frequency converter 32 adjusts the speed of the negative pressure fan 31 according to the real-time venting pressure in the high-pressure reactor 1; if the pressure in the reactor is high, the fan speed is increased to provide sufficient suction force; if the pressure is low, the fan speed is reduced to prevent excessive suction; through the above adjustment, a stable negative pressure state is maintained in the shaped exhaust pipe 2. Subsequently, the exhaust valve 11 on the high-pressure reactor 1 is opened, and the gas inside the high-pressure reactor 1 enters the adsorption treatment component 4 through the interface section 21 and the inclined section 22 in sequence under the action of the internal and external pressure difference; wherein, the interface section 21 is an elastic bellows, which can absorb the stress generated by pipeline vibration and thermal expansion and contraction; the one-way air inlet valve 26 remains open when the system is running normally, and automatically closes when the negative pressure device stops or the pressure drops abnormally, to prevent the absorbent liquid from backflowing; When the gas enters the inclined section 22, it first passes through the staggered buffer plates 23. During the flow, the gas is blocked by the buffer plates 23, forming a reverse flow, which significantly prolongs the residence time of the gas in the inclined section 22. During this process, the high-temperature gas exchanges heat with the pipe wall and cools down, and the various gas components are fully mixed and uniform. After the buffering treatment, the gas reaches the distribution plate 24 and is cut into a large number of microbubbles when it passes through the bubble holes 25 with a diameter of 0.5 to 2 mm. The microbubbles enter the absorbent liquid in the treatment zone 401. Due to the significantly increased gas-liquid contact area, the harmful components in the gas are efficiently captured by the absorbent liquid. Since the inclined section 22 is set at an angle downward, any condensate or a small amount of absorbent liquid that may be carried in the gas will automatically flow back to the treatment zone 401 under the action of gravity, which can avoid the accumulation of liquid in the pipe for a long time and cause corrosion. After being treated by the absorbent, the gas escapes from the liquid surface, generating a large amount of foam. The design of the separator 42 divides the interior of the storage tank 41 into a treatment zone 401 and a buffer zone 402. This prevents the foam from accumulating above the treatment zone 401 and entering the buffer zone 402, as it is blocked by the separator 42. The clean gas, after foam removal, enters the buffer zone 402 through the gas channel 46 above the liquid surface and is ultimately drawn into the air inlet of the variable frequency negative pressure device 3 for further treatment or direct discharge outdoors.

[0045] Throughout the exhaust process, the self-regulating electric heating cable inside the outer jacket 5 operates continuously. When the local temperature of the inclined section 22 falls below the set value, the heating cable automatically increases its heating capacity; when the temperature rises, it automatically reduces its heating capacity. The insulation layer 52 reduces heat loss, ensuring that the gas temperature inside the inclined section 22 is always maintained above the dew point, fundamentally preventing condensate formation. During the exhaust process, operators can monitor the absorbent liquid level in real time through the liquid level observation window 45, replenish fresh absorbent liquid through the liquid inlet 44, and periodically discharge waste liquid through the drain outlet 43, ensuring long-term stable operation of the system.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who makes equivalent substitutions or changes to the ventilation and exhaust pipe for a high-pressure reactor and its inventive concept according to the present invention within the scope of the technology disclosed in the present invention should be covered within the scope of protection of the present invention.

Claims

1. A ventilation and exhaust pipe for a high-pressure reactor, comprising a shaped exhaust pipe (2) for connecting to the exhaust port of the high-pressure reactor (1); characterized in that: The irregular exhaust pipe (2) is provided with an interface section (21) and an inclined section (22) that slopes downward. It also includes: an adsorption treatment component (4), which includes a storage cylinder (41), the outlet end of the inclined section (22) is inserted below the liquid surface of the storage cylinder (41), and the inclined section (22) is provided with a plurality of buffer plates (23) for extending the gas path and a distribution plate (24) for breaking bubbles, and the distribution plate (24) is provided with a plurality of arrayed bubble holes (25). The variable frequency negative pressure device (3) is connected to the storage cylinder (41) and is used to generate negative pressure in the shaped exhaust pipe (2) so that the gas enters the absorbent liquid in the storage cylinder (41) after passing through the interface section (21), the inclined section (22), the buffer plate (23), and the distribution plate (24) in sequence.

2. The ventilation and exhaust pipe for a high-pressure reactor according to claim 1, characterized in that, An exhaust valve (11) is fixedly installed on the exhaust port of the high-pressure reactor (1), and the interface section (21) is fixedly connected to the exhaust valve (11). A one-way air inlet valve (26) is installed on the interface section (21).

3. The ventilation and exhaust pipe for a high-pressure reactor according to claim 2, characterized in that, The interface section (21) is made of either an elastic corrugated pipe or a metal flexible hose.

4. The ventilation and exhaust pipe for a high-pressure reactor according to claim 1, characterized in that, The inclined section (22) of the shaped exhaust pipe (2) is wrapped with an outer sleeve (5). The outer sleeve (5) is provided with a heating layer (51) and an insulation layer (52). The insulation layer (52) is wrapped around the heating layer (51) to reduce heat loss. The insulation layer (52) is filled with insulation cotton. The heating layer (51) is a self-regulating electric heating tape, which is evenly laid along the length of the inclined section (22) to heat the gas in the inclined section (22) to prevent condensation.

5. A ventilation and exhaust pipe for a high-pressure reactor according to claim 1, characterized in that, The storage cylinder (41) is provided with a partition plate (42) to divide the inside of the cylinder into a treatment zone (401) and a buffer zone (402). The treatment zone (401) is used to contain the absorbent liquid. The outlet of the inclined section (22) is inserted below the liquid surface of the treatment zone (401). The buffer zone (402) is connected to the treatment zone (401) above the liquid surface. The air inlet of the variable frequency negative pressure device (3) is connected to the buffer zone (402) so that the gas treated by the absorbent liquid enters the buffer zone (402) and is then extracted.

6. A ventilation and exhaust pipe for a high-pressure reactor according to claim 5, characterized in that, The variable frequency negative pressure device (3) includes a negative pressure fan (31) fixed on the storage cylinder (41) and a frequency converter (32) connected thereto. The frequency converter (32) is used to adjust the speed of the negative pressure fan (31) according to the exhaust pressure of the reactor, so that the shaped exhaust pipe (2) maintains a stable negative pressure state.

7. A ventilation and exhaust pipe for a high-pressure reactor according to claim 1, characterized in that, The buffer plate (23) is a staggered baffle plate used to extend the residence time of the gas in the inclined section (22) so that the gas is fully mixed and cooled before entering the distribution plate (24).

8. A ventilation and exhaust pipe for a high-pressure reactor according to claim 7, characterized in that, The diameter of the bubble holes (25) of the distribution plate (24) is 0.5 to 2 mm. After the gas is broken into tiny bubbles by the distribution plate (24), it enters the absorption liquid, increasing the gas-liquid contact area.

9. A ventilation and exhaust pipe for a high-pressure reactor according to claim 1, characterized in that, The side of the storage cylinder (41) is provided with a liquid inlet (44) and a drain outlet (43), and the side wall is provided with a liquid level observation window (45).

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