Ethylene oxide tail gas emission buffer tank

Abstract

The utility model relates to the technical field of buffer tanks, and discloses an ethylene oxide tail gas emission buffer tank which comprises a tank body, the top of the tank body is fixedly connected with an isolation plate, the top of the isolation plate is fixedly connected with a motor, the driving end of the motor is fixedly connected with a connecting rod, and the periphery of the bottom of the connecting rod is fixedly connected with a connecting block. A plurality of uniformly distributed stirring blades are fixedly connected to the periphery of the connecting block, a water inlet pipe is fixedly connected to the right side of the tank body, a water outlet pipe is fixedly connected to the left side of the water inlet pipe, a plurality of uniformly distributed adjustable nozzles are fixedly connected to the periphery of the water outlet pipe, and a settling tank is fixedly connected to the bottom of the tank body; and the bottom of the settling tank is fixedly connected with a blow-off pipe. According to the utility model, through the motor, the stirring blade, the water outlet pipe and the adjustable nozzle, the problems of time and labor consumption and incomplete cleaning of manual cleaning in the prior art are effectively solved, and the high efficiency and safety of subsequent use of the buffer tank are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of buffer tank technology, and in particular to a buffer tank for ethylene oxide tail gas emission. Background Technology

[0002] Ethylene oxide (also known as ethylene oxide) is an organic compound, belonging to the oxygen-containing derivatives of hydrocarbons. It is toxic and carcinogenic. Its chemical properties are highly reactive, flammable, and explosive, making transportation difficult and thus highly regional. Ethylene oxide is widely used in the detergent, pharmaceutical, and printing and dyeing industries. It was once widely used as a bactericide and as a starting agent in cleaning agents in related chemical industries. During the production of ethylene oxide, buffer tanks are required to treat its exhaust gases.

[0003] Most existing buffer tanks are integrally molded, requiring manual cleaning of the interior after use. Manual cleaning is not only time-consuming and labor-intensive, but also often fails to clean the interior thoroughly, affecting the subsequent use of the buffer tank. After prolonged use, the connection of the vent pipe is prone to leaks, leading to the risk of leakage and causing inconvenience for later maintenance. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an ethylene oxide tail gas emission buffer tank, which aims to improve the problems of inconvenient internal cleaning, low efficiency and incomplete cleaning, poor sealing reliability of the gas outlet pipe connection, inconvenient maintenance and easy leakage in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ethylene oxide tail gas emission buffer tank includes a tank body, an isolation plate fixedly connected to the top of the tank body, a motor fixedly connected to the top of the isolation plate, a connecting rod fixedly connected to the drive end of the motor, a connecting block fixedly connected to the bottom outer periphery of the connecting rod, and multiple evenly distributed stirring blades fixedly connected to the outer periphery of the connecting block. A water inlet pipe is fixedly connected to the right side of the tank body, a water outlet pipe is fixedly connected to the left side of the water inlet pipe, a fixing rod is fixedly connected to the left side of the water outlet pipe, and multiple evenly distributed adjustable nozzles are fixedly connected to the outer periphery of the water outlet pipe. A sedimentation tank is fixedly connected to the bottom of the tank body, and a sewage discharge pipe is fixedly connected to the bottom of the sedimentation tank.

[0007] As a further description of the above technical solution:

[0008] An air vent is provided on the top right side of the isolation plate. An air vent pipe is slidably connected to the top right side of the isolation plate. A washer is abutted at the bottom of the air vent pipe. Multiple evenly distributed mounting blocks are fixedly connected to the bottom of the outer periphery of the air vent pipe. Mounting holes are provided on the top of the mounting blocks. Multiple evenly distributed threaded rods are fixedly connected to the top right side of the isolation plate. A rotating nut is abutted at the top of the mounting block.

[0009] As a further description of the above technical solution:

[0010] An air inlet pipe is fixedly connected to the left side of the outer periphery of the tank body, and a support frame is fixedly connected to the outer periphery of the bottom of the tank body. Multiple evenly distributed support legs are fixedly connected to the bottom of the support frame.

[0011] As a further description of the above technical solution:

[0012] The washer abuts against the vent hole, and the vent pipe is slidably connected to the vent hole;

[0013] As a further description of the above technical solution:

[0014] The threaded rod is threadedly connected to the rotating nut, and the threaded rod is slidably connected to the mounting hole;

[0015] As a further description of the above technical solution:

[0016] The fixing rod is fixedly connected to the inside of the tank;

[0017] As a further description of the above technical solution:

[0018] The sedimentation tank is funnel-shaped, and the outlet pipe is annular.

[0019] As a further description of the above technical solution:

[0020] The gasket is made of rubber.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, when the stirring blades are driven by a motor to rotate at high speed, a strong airflow is generated, which effectively removes impurities such as polymers and condensate adhering to the tank wall and component surfaces. At the same time, the washing liquid sprayed from the spray head evenly covers the entire tank under the turbulence formed by stirring, achieving indiscriminate rinsing of dead corners inside the tank. The funnel-shaped sedimentation tank allows the impurities washed down to quickly gather at the bottom of the tank and be discharged in time through the drain pipe. The cleaning work can be completed without manual entry into the tank, which significantly solves the problems of time-consuming and labor-intensive manual cleaning and incomplete cleaning in the prior art, ensuring the efficiency and safety of the buffer tank in subsequent use.

[0023] 2. In this utility model, an initial sealing barrier is formed by embedding the gasket at the bottom of the vent pipe into the vent hole 16. The outer peripheral mounting block achieves sealing through the threaded connection between the threaded rod and the rotating nut. This allows for quick assembly and disassembly of the vent pipe. At the same time, this structure eliminates the risk of sealing failure caused by human misalignment through mechanical clamping. It solves the problems of poor sealing and easy leakage after long-term use of the vent pipe in the prior art, as well as the inconvenience of maintenance. It is especially suitable for the treatment of flammable, explosive, toxic and harmful gases such as ethylene oxide, effectively improving the safety and ease of operation and maintenance of the equipment. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of an ethylene oxide tail gas emission buffer tank proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the inlet pipe of an ethylene oxide tail gas emission buffer tank proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the stirring blade of an ethylene oxide tail gas emission buffer tank proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the motor structure of the ethylene oxide tail gas emission buffer tank proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the outlet pipe of an ethylene oxide tail gas emission buffer tank proposed in this utility model.

[0029] In the diagram: 1. Tank body; 2. Air inlet pipe; 3. Support frame; 4. Support leg; 5. Isolation plate; 6. Motor; 7. Connecting rod; 8. Connecting block; 9. Stirring blade; 10. Water inlet pipe; 11. Fixing rod; 12. Water outlet pipe; 13. Adjustable nozzle; 14. Sedimentation tank; 15. Sewage pipe; 16. Air outlet; 17. Washer; 18. Air outlet pipe; 19. Mounting block; 20. Mounting hole; 21. Threaded rod; 22. Rotary nut. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-5This utility model provides an embodiment of an ethylene oxide tail gas emission buffer tank, comprising a tank body 1, which serves as the main structure of the buffer tank and is used to contain ethylene oxide tail gas and washing liquid, providing a space for gas-liquid mixing and buffering. An isolation plate 5 is fixedly connected to the top of the tank body 1, separating the interior of the tank body 1 from the top components. A motor 6 is fixedly connected to the top of the isolation plate 5, providing rotational power. A connecting rod 7 is fixedly connected to the drive end of the motor 6, and a connecting block 8 is fixedly connected to the outer periphery of the bottom of the connecting rod 7. Multiple evenly distributed stirring blades 9 are fixedly connected to the outer periphery of the connecting block 8. The stirring blades 9 can rotate stably within the tank body 1 via the connecting rod 7 and the connecting block 8. A water inlet pipe 10 is fixedly connected to the right side of the tank body 1, connecting to an external aqueous solution pipe. A water outlet pipe 12 is fixedly connected to the left side of the water inlet pipe 10. The water outlet pipe 12 is annular and connected to the water inlet pipe 10, serving as the main pipe of the spray system. 2. A fixing rod 11 is fixedly connected to the left side. The fixing rod 11 is used to fix the water outlet pipe 12 to operate stably inside the tank 1. The fixing rod 11 is fixedly connected to the inside of the tank 1. Multiple evenly distributed adjustable nozzles 13 are fixedly connected to the outer periphery of the water outlet pipe 12. The water output of the adjustable nozzles 13 can be adjusted according to different needs. A sedimentation tank 14 is fixedly connected to the bottom of the tank 1. The sedimentation tank 14 is funnel-shaped and is a sedimentation area for impurities. It receives the condensate, polymer and solid particles after gas-liquid separation in the tank, which is convenient for centralized discharge and treatment. A sewage pipe 15 is fixedly connected to the bottom of the sedimentation tank 14. Sewage and impurities can be discharged from the tank 1 through the sewage pipe 15. An air inlet pipe 2 is fixedly connected to the left side of the outer periphery of the tank 1. The air inlet pipe 2 transports ethylene oxide tail gas into the tank 1. A support frame 3 is fixedly connected to the outer periphery of the bottom of the tank 1. Multiple evenly distributed support legs 4 are fixedly connected to the bottom of the support frame 3. The support frame 3 and support legs 4 can provide stable support for the operation of the whole device.

[0032] Reference Figure 1 , Figure 2 and Figure 5In one embodiment of this utility model: a vent 16 is provided on the top right side of the isolation plate 5, which is a channel for discharging the treated exhaust gas. A vent pipe 18 is slidably connected to the top right side of the isolation plate 5, and the vent pipe 18 is slidably connected inside the vent pipe 16. The vent pipe 18 can move along the axial direction of the vent pipe 16, which facilitates quick installation and disassembly, while ensuring that the exhaust gas is smoothly discharged to the subsequent treatment device. A washer 17, made of rubber, abuts against the bottom of the vent pipe 18 inside the vent pipe 16. The washer 17 fills the gap between the vent pipe 18 and the vent pipe 16 through elastic deformation. The gap forms an initial sealing layer to prevent ethylene oxide tail gas from leaking from the connection. Multiple evenly distributed mounting blocks 19 are fixedly connected to the bottom of the outer periphery of the outlet pipe 18. The top of the mounting block 19 has a mounting hole 20. Multiple evenly distributed threaded rods 21 are fixedly connected to the top right side of the isolation plate 5. The threaded rods 21 are slidably connected in the mounting hole 20. The top of the mounting block 19 abuts against a rotating nut 22. The threaded rods 21 are threadedly connected in the rotating nut 22. The mounting block 19 and the threaded rods 21 can be fixed by rotating the nut 22, thereby further fixing the sealing between the outlet pipe 18 and the outlet hole 16.

[0033] Working principle: When ethylene oxide tail gas enters the tank from the inlet pipe 2 on the left side of the tank body 1, the motor 6 drives the connecting block 8 and the outer stirring blades 9 to rotate at high speed through the connecting rod 7, forming a strong rotating flow field in the tank. This allows the tail gas to be fully mixed with the washing liquid sprayed from the water inlet pipe 10 through the adjustable nozzles 13 on the outer periphery of the annular water outlet pipe 12. The stirring blades 9 not only enhance gas-liquid mass transfer and accelerate the absorption or decomposition reaction of ethylene oxide by the washing liquid, but also prevent polymer and condensate deposition by flushing the tank wall and component surfaces with fluid. Combined with the gravity settling effect of the funnel-shaped settling tank 14, impurity particles gather to the bottom of the tank and are subsequently discharged through the drain pipe 15. This achieves integrated operation of buffering, washing and self-cleaning, and can complete impurity removal and gas-liquid treatment without manual intervention in the tank body 1.

[0034] During the installation of the vent pipe (18), first align the rubber gasket (17) at the bottom of the vent pipe 18 with the vent hole (16) of the isolation plate (5), and slide it in along the axial direction of the vent hole 16 so that the gasket 17 is embedded in the vent hole 16 to form an initial seal. Then align the mounting hole (20) of the mounting block (19) on the outer periphery of the vent pipe 18 with the threaded rod (21). By rotating the rotating nut (22), the threaded engagement between the threaded rod 21 and the rotating nut 22 generates a downward clamping force, which gradually presses the mounting block (19) and the vent pipe (18) against the isolation plate (5), so that the gasket (17) fills the gap between the vent pipe 18 and the vent hole 16 due to elastic deformation, forming a reliable sealing space. When disassembling, simply rotate the rotating nut 22 in the opposite direction to quickly loosen the mounting block 19 and pull out the vent pipe 18. The whole process does not require tools. The clamping force ensures the sealing reliability under long-term use and avoids the risk of ethylene oxide leakage.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ethylene oxide tail gas emission buffer tank, comprising a tank body (1), characterized in that: The tank (1) is fixedly connected to the top of the isolation plate (5), the isolation plate (5) is fixedly connected to the top of the motor (6), the motor (6) is fixedly connected to the drive end of the motor (6) and the bottom outer periphery of the connecting rod (7) is fixedly connected to the connecting block (8), and the connecting block (8) is fixedly connected to the outer periphery of multiple evenly distributed stirring blades (9). The tank (1) is fixedly connected to the right side of the water inlet pipe (10), the water inlet pipe (10) is fixedly connected to the left side of the water outlet pipe (12), the water outlet pipe (12) is fixedly connected to the left side of the water outlet pipe (12) and the water outlet pipe (12) is fixedly connected to multiple evenly distributed adjustable nozzles (13). The tank (1) is fixedly connected to the bottom of the sedimentation tank (14), and the sedimentation tank (14) is fixedly connected to the bottom of the sewage pipe (15).

2. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: An air vent (16) is provided on the top right side of the isolation plate (5). An air vent pipe (18) is slidably connected to the top right side of the isolation plate (5). A washer (17) is abutted at the bottom of the air vent pipe (18). Multiple evenly distributed mounting blocks (19) are fixedly connected to the bottom of the outer periphery of the air vent pipe (18). An mounting hole (20) is provided on the top of the mounting block (19). Multiple evenly distributed threaded rods (21) are fixedly connected to the top right side of the isolation plate (5). A rotating nut (22) is abutted at the top of the mounting block (19).

3. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: An air inlet pipe (2) is fixedly connected to the left side of the outer periphery of the tank (1), and a support frame (3) is fixedly connected to the outer periphery of the bottom of the tank (1). Multiple evenly distributed support legs (4) are fixedly connected to the bottom of the support frame (3).

4. The ethylene oxide tail gas emission buffer tank according to claim 2, characterized in that: The washer (17) abuts against the air outlet (16), and the air outlet pipe (18) is slidably connected to the air outlet (16).

5. The ethylene oxide tail gas emission buffer tank according to claim 2, characterized in that: The threaded rod (21) is threadedly connected to the rotating nut (22), and the threaded rod (21) is slidably connected to the mounting hole (20).

6. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: The fixing rod (11) is fixedly connected to the inside of the tank (1).

7. The ethylene oxide tail gas emission buffer tank according to claim 1, characterized in that: The sedimentation tank (14) is funnel-shaped, and the outlet pipe (12) is annular.

8. The ethylene oxide tail gas emission buffer tank according to claim 2, characterized in that: The washer (17) is made of rubber.

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