A device for purifying tail gas produced in the hydration of benzalkonium chloride

Abstract

The utility model discloses a kind of benzalkonium chloride hydration law production tail gas treatment purification device, it is related to tail gas treatment purification technical field, the utility model discloses the included angle of the gas outlet and the gas outlet nozzle is greater than 0 ° with the one end of distribution pipe, when the gas outlet nozzle is actually manufactured, it is guaranteed that the opening angle of gas outlet meets the range requirement of greater than 0 ° and less than 60 °, the included angle of the gas outlet and the gas outlet nozzle is greater than 0 ° with the one end of distribution pipe, it is guaranteed that bubble can be discharged from gas outlet at certain angle, instead of being discharged in parallel with the axial direction of gas outlet nozzle, so it is more conducive to the front flow of bubble to the movement track of gas outlet nozzle, and then collide and break with gas outlet nozzle, further optimize the movement track and breaking effect of bubble in alkaline reagent, improve the contact effect of tail gas and alkaline reagent, improve tail gas purification efficiency, so that HCl and CO2 Gas is fully absorbed by alkaline solution, avoid certain pollution to environment.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment and purification technology, specifically to an exhaust gas treatment and purification device for benzalkonium chloride hydrate production. Background Technology

[0002] Although no gas is generated in the main reaction of benzalkonium chloride hydration production process, a small amount of HCl gas and volatile organic compounds (VOCs) may be produced under abnormal conditions.

[0003] Existing exhaust gas treatment technologies have the following shortcomings:

[0004] Traditional water washing devices have low HCl absorption efficiency, which can easily cause secondary pollution. Activated carbon adsorption of VOCs has the problem of rapid saturation and frequent replacement. To solve this problem, people use alkaline washing to remove HCl. The tail gas after alkaline washing enters a bio-trickling filter tower. VOCs are adsorbed and degraded into CO2 and H2O by the biofilm before being discharged. However, during the alkaline washing process, HCl gas turns into bubbles and floats to the surface. It is not fully absorbed by the alkaline solution. Furthermore, the VOCs adsorbed and degraded into CO2 by the biofilm are not treated in time before being discharged, which still causes some pollution to the environment.

[0005] Therefore, we propose a tail gas treatment and purification device for benzalkonium chloride hydration production to remove residual HCl and CO2. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a device for treating and purifying tail gas from the hydrated production of benzalkonium chloride.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A device for treating and purifying tail gas from benzalkonium chloride hydration production includes:

[0009] The treatment tank has a cylindrical storage cavity inside, which is filled with an alkaline reagent. An exhaust pipe is provided on the side wall of the treatment tank.

[0010] A central shaft is rotatably mounted inside the processing tank along the height direction of the processing tank, and an air cavity is formed inside the central shaft;

[0011] The air vent includes:

[0012] The distribution pipe is installed on the periphery of the central shaft and is connected to the air chamber;

[0013] An air outlet is located on the lower side of the distribution pipe along the length of the distribution pipe and is connected to the distribution pipe. An air outlet hole is opened on the surface of the air outlet hole, and the angle between the air outlet hole and the other end of the air outlet hole is less than 60°. The air bubble formed at the air outlet hole flows to the front of the air outlet hole's movement trajectory and collides with the air outlet hole and breaks.

[0014] The drive source is located at the end of the central shaft along the height direction of the central shaft;

[0015] The intake pipe is located at the end of the central shaft opposite to the drive source.

[0016] Preferably, the angle between the air outlet and the air nozzle at the end opposite to the distribution pipe is greater than 0°.

[0017] Preferably, the air outlet also includes a spike, which is fixedly installed at the end of the air outlet nozzle away from the distribution pipe and collides with the air bubbles formed at the air outlet.

[0018] Preferably, the driving source is a servo motor, which is fixedly installed on the processing tank. The driving source drives the ventilation section to rotate the exhaust section, and the exhaust gas is evenly distributed in the alkaline reagent.

[0019] Preferably, the spike of the spike is located at one end away from the spike.

[0020] Preferably, a support frame is provided at the bottom of the processing tank.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model ensures that the angle between the air outlet and the end of the air nozzle facing away from the distribution pipe is greater than 0°. During the actual manufacturing of the air nozzle, the opening angle of the air outlet is guaranteed to meet the requirement of being greater than 0° and less than 60°. This ensures that the bubbles can be discharged from the air outlet at a certain angle, rather than parallel to the axial direction of the air nozzle. This is more conducive to the bubbles flowing forward along the trajectory of the air nozzle, colliding and breaking with it. This further optimizes the movement trajectory and breaking effect of the bubbles in the alkaline reagent, improves the contact effect between the exhaust gas and the alkaline reagent, increases the exhaust gas purification efficiency, and allows HCl and CO2 gases to be fully absorbed by the alkaline solution, avoiding certain environmental pollution.

[0023] 2. This utility model fixes the spiked cone at the end of the air outlet that is away from the distribution pipe, ensuring that the position of the spiked cone corresponds to the air outlet so that it can collide with the bubbles formed at the air outlet. When the bubbles are discharged from the air outlet, in addition to colliding and breaking with the air outlet in front of the air outlet's movement trajectory, they will also collide with the spiked cone. The spiked cone can further break the bubbles, increase the degree of bubble breakage, greatly increase the contact area between the exhaust gas and the alkaline reagent, and significantly improve the exhaust gas purification effect. Attached Figure Description

[0024] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0025] Figure 1 A schematic diagram of a tail gas treatment and purification device for the hydrated production of benzalkonium chloride.

[0026] Figure 2 A top view schematic diagram of a tail gas treatment and purification device for the hydrated production of benzalkonium chloride.

[0027] Figure 3 This is a side sectional view of a tail gas treatment and purification device for the hydrated production of benzalkonium chloride;

[0028] Figure 4 This is a schematic diagram of the gas outlet in a tail gas treatment and purification device for benzalkonium chloride hydration production.

[0029] The diagram is labeled as follows: 1. Air outlet; 11. Air outlet hole; 12. Air outlet nozzle; 13. Spike; 2. Distribution pipe; 3. Ventilation section; 31. Central shaft; 32. Air chamber; 5. Drive source; 6. Processing tank. Detailed Implementation

[0030] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0031] Example

[0032] like Figures 1-4 As shown, a device for treating and purifying tail gas from benzalkonium chloride hydration production includes:

[0033] The treatment tank 6 has a cylindrical storage cavity inside, which is filled with an alkaline reagent, namely sodium hydroxide solution. This alkaline reagent is used to react with acidic or other reactive components in the exhaust gas to purify the exhaust gas. An exhaust pipe is provided on the side wall of the treatment tank 6, through which the purified gas will be discharged.

[0034] A central shaft 31 is rotatably installed inside the treatment tank 6 along the height direction of the treatment tank 6. An air chamber 32 is formed inside the central shaft 31 for conveying exhaust gas.

[0035] Air outlet 1 includes:

[0036] The distribution pipe 2 is installed on the periphery of the central shaft 31 and is connected to the air chamber 32 to ensure that the exhaust gas can enter the distribution pipe 2 from the air chamber 32 of the central shaft 31.

[0037] The air outlet 12 is disposed on the lower side of the distribution pipe 2 along the length of the distribution pipe 2 and is connected to the distribution pipe 2. The surface of the air outlet 12 is provided with an air outlet hole 11, and the angle between the air outlet hole 11 and the other end of the air outlet 12 is less than 60°. The air bubble formed at the air outlet hole 11 flows to the front of the movement trajectory of the air outlet 12 and collides with the air outlet 12 and breaks.

[0038] The drive source 5 is located at the end of the central shaft 31 along the height direction of the central shaft 31, and the exhaust gas enters the air chamber 32 of the central shaft 31 through the intake pipe.

[0039] The intake pipe is located at the end of the central shaft 31 opposite to the drive source 5;

[0040] Driven by the driving source 5, the central shaft 31 rotates, causing the exhaust section 1 to rotate accordingly. The exhaust gas enters the air chamber 32 from the intake pipe, and then exits through the distribution pipe 2 from the exhaust hole 11 of the exhaust nozzle 12, forming bubbles. Since the angle between the exhaust hole 11 and the other end of the exhaust nozzle 12 is less than 60°, the bubbles formed at the exhaust hole 11 flow to the front of the movement trajectory of the exhaust nozzle 12 and collide with the exhaust nozzle 12 and break. This allows the bubbles formed by the exhaust gas to continuously break in the alkaline reagent, increasing the contact area and contact time between the exhaust gas and the alkaline reagent, thereby improving the efficiency and effect of exhaust gas purification.

[0041] In one embodiment, the angle between the vent 11 and the nozzle 12 away from the distribution pipe 2 is greater than 0°. In the actual manufacturing of the nozzle 12, it is ensured that the opening angle of the vent 11 meets the requirement of being greater than 0° and less than 60°. The angle between the vent 11 and the nozzle 12 away from the distribution pipe 2 is greater than 0°, which ensures that the bubbles can be discharged from the vent 11 at a certain angle, rather than being discharged parallel to the axial direction of the nozzle 12. This is more conducive to the bubbles flowing forward of the movement trajectory of the nozzle 12, and then colliding and breaking with the nozzle 12. This further optimizes the movement trajectory and breaking effect of the bubbles in the alkaline reagent, improves the contact effect between the exhaust gas and the alkaline reagent, and improves the exhaust gas purification efficiency.

[0042] In one embodiment, the exhaust section 1 further includes a spike 13, which is fixedly installed at one end of the exhaust nozzle 12 away from the distribution pipe 2 and collides with the bubbles formed at the exhaust hole 11. When installing the exhaust nozzle 12, the spike 13 is fixedly installed at one end of the exhaust nozzle 12 away from the distribution pipe 2 to ensure that the position of the spike 13 corresponds to the exhaust hole 11 so as to collide with the bubbles formed at the exhaust hole 11. When the bubbles are discharged from the exhaust hole 11, in addition to colliding and breaking with the exhaust nozzle 12 in front of the movement trajectory of the exhaust nozzle 12, they will also collide with the spike 13. The spike 13 can further break the bubbles, increase the degree of bubble breakage, greatly improve the contact area between the exhaust gas and the alkaline reagent, and significantly improve the exhaust gas purification effect.

[0043] In one embodiment, the drive source 5 is a servo motor, which is fixedly installed on the processing tank 6. The drive source 5 drives the ventilation section 3 to rotate the exhaust section 1, and the exhaust gas is evenly distributed in the alkaline reagent. The drive source 5 is selected as a servo motor, and the servo motor is fixedly installed on the processing tank 6. Through electrical connection and control system, the servo motor can accurately drive the ventilation section 3 to rotate the exhaust section 1.

[0044] The servo motor has precise speed control and stable operating performance, which can ensure that the exhaust section 1 rotates at a stable and adjustable speed, so that the exhaust gas can be evenly distributed in the alkaline reagent. Compared with other driving methods, the servo motor can more accurately control the rotation speed of the exhaust section 1, thereby better controlling the movement and distribution of exhaust gas bubbles in the alkaline reagent, and further improving the uniformity and effect of exhaust gas purification.

[0045] In one embodiment, the spikes of the spike cone 13 are located at one end away from the spike cone 13. When manufacturing and installing the spike cone 13, the spikes of the spike cone 13 are located at the end away from the connection end between the spike cone 13 and the outlet nozzle 12, ensuring that the spikes can effectively collide with the bubbles. The spikes of the spike cone 13 are set in this way so that when they collide with the bubbles, the sharp spikes can contact the bubbles first, making it easier to puncture the bubbles, enhancing the bubble breaking effect, further improving the contact efficiency between the exhaust gas and the alkaline reagent, thereby improving the exhaust gas purification effect.

[0046] In one embodiment, a support frame is provided at the bottom of the treatment tank 6. The support frame is installed at the bottom of the treatment tank 6. The support frame of appropriate specifications and materials is selected according to the size and weight of the treatment tank 6. The support frame is fixed at the corresponding position at the bottom of the treatment tank 6 to ensure that the treatment tank 6 can be placed stably. The support frame provides stable support for the treatment tank 6, ensuring the stability of the entire exhaust gas treatment and purification device during operation, preventing the treatment tank 6 from tipping over due to unstable placement and other safety issues. It is also conducive to the long-term stable operation of the device.

[0047] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for treating and purifying tail gas from the hydration process of benzalkonium chloride, characterized in that, include: The processing tank (6) has a cylindrical storage cavity inside, which is filled with an alkaline reagent. An exhaust pipe is provided on the side wall of the processing tank (6). A central shaft (31) is rotatably mounted inside the processing tank (6) along the height direction of the processing tank (6), and an air chamber (32) is formed inside the central shaft (31). The air outlet (1) includes: The distribution pipe (2) is installed on the periphery of the central shaft (31) and is connected to the air chamber (32); The air outlet (12) is located on the lower side of the distribution pipe (2) along the length of the distribution pipe (2) and is connected to the distribution pipe (2). The surface of the air outlet (12) is provided with an air outlet hole (11), and the angle between the air outlet hole (11) and the other end of the air outlet (12) is less than 60°. The air bubble formed at the air outlet hole (11) flows to the front of the movement trajectory of the air outlet (12) and collides with the air outlet (12) and breaks. The drive source (5) is located at the end of the central shaft (31) along the height direction of the central shaft (31); The intake pipe is located at the end of the central shaft (31) away from the drive source (5).

2. The benzalkonium chloride hydration process tail gas treatment and purification device according to claim 1, characterized in that: The angle between the air outlet (11) and the air nozzle (12) at the end away from the distribution pipe (2) is greater than 0°.

3. The benzalkonium chloride hydration process tail gas treatment and purification device according to claim 2, characterized in that: The air outlet (1) also includes a spike (13), which is fixedly installed at one end of the air outlet (12) away from the distribution pipe (2) and collides with the air bubbles formed at the air outlet (11).

4. The benzalkonium chloride hydration process tail gas treatment and purification device according to claim 3, characterized in that: The drive source (5) is a servo motor, which is fixedly installed on the processing tank (6). The drive source (5) drives the ventilation section (3) to rotate the exhaust section (1), and the exhaust gas is evenly distributed in the alkaline reagent.

5. The benzalkonium chloride hydration process tail gas treatment and purification device according to claim 4, characterized in that: The spike (13) has its spikes positioned at one end away from the spike (13).

6. The benzalkonium chloride hydration process tail gas treatment and purification device according to claim 1, characterized in that: A support frame is provided at the bottom of the processing tank (6).

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