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CN-121972082-A - A ventilation exhaust duct for high-pressure reaction kettle

CN121972082ACN 121972082 ACN121972082 ACN 121972082ACN-121972082-A

Abstract

The invention discloses a ventilation 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 easy blockage in cold environment in the prior art; the invention relates to a special-shaped exhaust pipe which is used for being connected with an exhaust port of a high-pressure reaction kettle, and further comprises an adsorption treatment assembly, wherein the special-shaped exhaust pipe is provided with an interface section and an inclined section with an inclination downward direction, the adsorption treatment assembly comprises a storage barrel, the outlet end of the inclined section is inserted below the liquid level of the storage barrel, a plurality of buffer plates for prolonging a gas path and a distribution plate for breaking bubbles are arranged in the inclined section, and condensate entrained in gas automatically flows back into the storage barrel under the action of gravity through the special-shaped exhaust pipe with the inclined downward direction.

Inventors

  • WANG JI
  • XU GUOFENG
  • LU JINGXUAN
  • WANG HONGGUO
  • WANG YANG

Assignees

  • 阜新峰成化工科技发展有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (9)

  1. 1. The ventilation exhaust pipeline for the high-pressure reaction kettle comprises a special-shaped exhaust pipe (2) which is used for being connected with an exhaust port of the high-pressure reaction kettle (1), and is characterized in that: The special-shaped exhaust pipe (2) is provided with an interface section (21) and an inclined section (22) which is inclined downwards; The device further comprises an adsorption treatment assembly (4), wherein the adsorption treatment assembly (4) comprises a storage cylinder (41), the outlet end of the inclined section (22) is inserted below the liquid level of the storage cylinder (41), a plurality of buffer plates (23) for prolonging the gas path and a distribution plate (24) for breaking bubbles are arranged in the inclined section (22), and a plurality of gas holes (25) distributed in an array are formed in the distribution plate (24); The variable-frequency negative pressure device (3) is communicated with the agent storage cylinder (41) and is used for enabling negative pressure to be generated in the special-shaped exhaust pipe (2) so that gas sequentially passes through the interface section (21), the inclined section (22), the buffer plate (23) and the distribution plate (24) and then enters the absorption liquid in the agent storage cylinder (41).
  2. 2. A ventilation and exhaust duct for a high-pressure reactor according to claim 1, characterized in that an exhaust valve (11) is fixedly arranged on the exhaust port of the high-pressure reactor (1), the interface section (21) is fixedly connected to the exhaust valve (11), and a unidirectional air inlet valve (26) is arranged on the interface section (21).
  3. 3. A venting line for autoclaves according to claim 2, characterized in that the interface section (21) is one of an elastic bellows, a metal hose.
  4. 4. The ventilation and exhaust pipeline for the high-pressure reaction kettle according to claim 1, wherein an outer sleeve (5) is wrapped outside an inclined section (22) of the special-shaped exhaust pipe (2), a heating layer (51) and an insulating layer (52) are arranged in the outer sleeve (5), the insulating layer (52) is wrapped outside the heating layer (51) and used for reducing heat dissipation, insulating cotton is filled in the insulating layer (52), the heating layer (51) is a self-regulating electric tracing band, and the insulating and heating pipeline is uniformly laid along the length direction of the inclined section (22) and used for heating gas in the inclined section (22) to prevent condensation.
  5. 5. A ventilation and exhaust duct for a high-pressure reactor according to claim 1, characterized in that a partition plate (42) is arranged in the agent storage cylinder (41) to partition the inside of the cylinder into a treatment area (401) and a buffer area (402), the treatment area (401) is used for containing absorption liquid, the outlet of the inclined section (22) is inserted below the liquid level of the treatment area (401), the buffer area (402) is communicated with the treatment area (401) above the liquid level, and the air inlet of the variable-frequency negative pressure device (3) is communicated with the buffer area (402) so that the gas treated by the absorption liquid is pumped out after entering the buffer area (402).
  6. 6. The ventilation and exhaust pipeline for the high-pressure reaction kettle according to claim 5, wherein the variable-frequency negative pressure device (3) comprises a negative pressure fan (31) fixed on the agent storage barrel (41) and a frequency converter (32) connected with the negative pressure fan, and the frequency converter (32) is used for adjusting the rotating speed of the negative pressure fan (31) according to the exhaust pressure of the reaction kettle so as to maintain a stable negative pressure state in the special-shaped exhaust pipe (2).
  7. 7. A venting line for autoclaves according to claim 1, characterized in that the buffer plates (23) are staggered baffles for extending the residence time of the gas in the inclined section (22) and for thoroughly mixing and cooling the gas before entering the distribution plate (24).
  8. 8. The ventilation and exhaust pipeline for the high-pressure reaction kettle according to claim 7, wherein the diameter of the bubble holes (25) of the distribution plate (24) is 0.5-2 mm, and gas is crushed into tiny bubbles through the distribution plate (24) and then enters the absorption liquid, so that the gas-liquid contact area is increased.
  9. 9. The ventilation and exhaust pipeline for the high-pressure reaction kettle according to claim 1, wherein a liquid filling opening (44) and a sewage draining opening (43) are sequentially arranged on the side surface of the agent storage barrel (41), and a liquid level observation window (45) is arranged on the side wall.

Description

A ventilation exhaust duct for high-pressure reaction kettle Technical Field The invention relates to the technical field of high-pressure reaction kettles, in particular to a ventilation exhaust pipeline for a high-pressure reaction kettle. Background The ventilating and exhausting pipeline is one pipeline system for exhausting gas, steam or volatile matter produced inside the reaction kettle, and has the main function of exhausting harmful gas or volatile matter produced inside the reaction kettle from the reaction kettle and through pipeline to the outside or treated before being exhausted. In the prior art, the following scheme is generally adopted in the ventilation exhaust pipeline of the high-pressure reaction kettle: (1) And the in-line pipeline is directly connected with an exhaust port of the reaction kettle and is communicated with the outside of the room. The scheme has simple structure, can not carry out purification treatment on the exhaust gas, directly discharges toxic and harmful gas to cause environmental pollution, and simultaneously, high-temperature gas exhausted by the reaction kettle is easy to generate condensate when meeting cold in a pipeline, and long-term operation leads to pipeline corrosion perforation to cause leakage risk. (2) The simple gas washing bottle is that the gas outlet of the reaction kettle is connected with a gas washing bottle filled with absorption liquid, and the gas is discharged after bubbling and absorption by the gas washing bottle. The scheme has certain purifying capacity, but has the defects that a ① gas washing bottle has small volume, short gas residence time and low absorption efficiency, the exhaust pressure fluctuation of a ② reaction kettle is large, gas cannot effectively pass through a liquid layer at low pressure, liquid medicine can be reversely poured due to the fact that the gas washing bottle is impacted at high pressure, a ③ heating and heat preservation measure is not adopted, a pipeline is easy to block in a cold environment, ④ condensate cannot be effectively collected, and a corrosion problem still exists after long-term operation. (3) And the conventional negative pressure suction system is characterized in that the reaction kettle is connected with a liquid storage tank and a negative pressure fan, and negative pressure exhaust is formed by suction of the fan. The scheme solves the problem of difficult low-pressure exhaust, but has the defects that the gas in a ① liquid storage tank is unevenly distributed, bubbles are large, the gas-liquid contact area is small, the absorption efficiency is to be improved, absorption liquid is easy to be pumped into a fan when the pumping force of the ② fan fluctuates, the ③ pressure-free self-adaptive adjusting function is realized, the system stability is poor, and the ④ pipeline condensation problem is not effectively solved. In summary, the prior art has the technical problems of pipeline corrosion, poor pressure fluctuation adaptability, low purification efficiency and easy blockage in cold environment. Disclosure of Invention The invention aims to solve the technical problems of pipeline corrosion, poor pressure fluctuation adaptability, low purification efficiency and easy blockage in cold environment of a ventilation exhaust pipeline of a traditional high-pressure reaction kettle. In order to achieve the above purpose, the invention adopts the following technology that a ventilation exhaust pipeline for a high-pressure reaction kettle comprises a special-shaped exhaust pipe which is used for being connected with an exhaust port of the high-pressure reaction kettle; the special-shaped exhaust pipe is provided with an interface section and an inclined section which is inclined downwards; The adsorption treatment assembly comprises a storage barrel, an outlet end of the inclined section is inserted below the liquid level of the storage barrel, a plurality of buffer plates for prolonging the gas path and a distribution plate for breaking bubbles are arranged in the inclined section, and a plurality of gas holes distributed in an array are formed in the distribution plate; The variable-frequency negative pressure device is communicated with the agent storage cylinder and is used for enabling negative pressure to be generated in the special-shaped exhaust pipe, so that gas sequentially passes through the interface section, the inclined section, the buffer plate and the distribution plate and then enters the absorption liquid in the agent storage cylinder. As the ventilation exhaust pipeline for the high-pressure reaction kettle, the exhaust valve is fixedly arranged on the exhaust port of the high-pressure reaction kettle, the interface section is fixedly connected to the exhaust valve, and the unidirectional air inlet valve is arranged on the interface section. As one of the above-mentioned techniques, a ventilation exhaust pipe for a high-pressure reaction vessel is used, and the joint section is