A waste gas treatment device for pharmaceutical intermediates

Abstract

This invention relates to the field of waste gas treatment technology and discloses a waste gas treatment device for pharmaceutical intermediates. The device includes a rotating shaft, a gear ring fixedly connected to the bottom of the rotating shaft, circular gears uniformly meshing with the teeth of the gear ring, a hollow tube fixedly connected to the inner wall of the circular gears, connecting pipes fixedly connected to the bottom of each hollow tube, nozzles uniformly fixedly connected to the outer wall of each connecting pipe, a bevel gear one fixedly connected to the top of the rotating shaft, a bevel gear two meshing with the teeth of the bevel gear one, a connecting shaft fixedly connected to the inner wall of the bevel gear two, and a drive motor mounted on one end of the connecting shaft. By starting the drive motor, the rotating shaft drives the gear ring to rotate, which in turn drives the hollow tubes and circular gears to rotate, ultimately causing the hollow tubes to drive the connecting pipes and nozzles to rotate. This expands the spray range of the nozzles, allowing the treatment liquid to contact the waste gas more fully and improving the treatment effect.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for pharmaceutical intermediates. Background Technology

[0002] Pharmaceutical intermediates are indispensable fine chemical intermediates in the synthesis of chemical raw materials and are the core link in the pharmaceutical industry chain that connects basic chemical raw materials and finished raw materials. The production process of pharmaceutical intermediates will continuously emit a large amount of process waste gas. If the waste gas is discharged directly without treatment, it will cause a decline in regional air quality and cause environmental pollution. Therefore, a waste gas treatment device for pharmaceutical intermediates is needed.

[0003] Traditional waste gas treatment devices often use spray absorption to treat waste gas. Traditional spray absorption operations mostly use fixed nozzle structures, which have obvious spray blind zones and cannot achieve sufficient contact between the gas and liquid phases in the tower. This leads to a reduction in the treatment effect of waste gas, and easily results in incomplete waste gas treatment and failure to meet emission standards. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a waste gas treatment device for pharmaceutical intermediates. It solves the problem that traditional spray absorption operations often use fixed nozzle structures, which have obvious spray blind spots and cannot achieve sufficient contact between the gas and liquid phases in the tower. This leads to a reduction in the treatment effect of waste gas and easily results in incomplete waste gas treatment and failure to meet emission standards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment device for pharmaceutical intermediates, comprising a base plate, a treatment tower, and an annular pipe. A mounting frame is fixedly connected to the bottom of the annular pipe. A rotating shaft is rotatably connected inside the mounting frame. A gear ring is fixedly connected to the bottom of the rotating shaft. Circular gears are uniformly meshed at the tooth ends of the gear ring. A hollow tube is fixedly connected to the inner wall of the circular gear. The top of the hollow tube is rotatably connected to the bottom of the annular pipe. Connecting pipes are fixedly connected to the bottom of each hollow tube. Nozzles are uniformly fixedly connected to the outer wall of each connecting pipe. A bevel gear one is fixedly connected to the top of the rotating shaft. A bevel gear two is meshed at the tooth ends of bevel gear one. A connecting shaft is fixedly connected to the inner wall of bevel gear two. A drive motor is installed at one end of the connecting shaft. An agitator is installed at the bottom of the base plate.

[0006] By adopting the above technical solution, the output end of the drive motor drives the connecting shaft to rotate, which in turn drives the second bevel gear to rotate synchronously. The tooth end of the second bevel gear meshes with the first bevel gear, thereby driving the first bevel gear and the rotating shaft to rotate. The gear ring rotates synchronously with the rotating shaft. When the gear ring rotates, it synchronously drives all the circular gears to rotate around their own axes, which in turn drives each hollow tube to rotate synchronously. During the rotation of the hollow tube, the nozzles on the connecting tube rotate synchronously in a 360° circular motion, achieving a seamless rotating spray, reducing the spray blind zone of traditional fixed nozzles, and significantly expanding the spray coverage of the treatment liquid. This allows the treatment liquid to fully and evenly contact the rising pharmaceutical intermediate waste gas, enhancing the absorption and purification effect of the waste gas. This solves the problem that traditional spray absorption operations mostly use fixed nozzle structures, which have obvious spray blind zones and cannot achieve full contact between the gas and liquid phases in the tower, thus reducing the treatment effect of the waste gas and easily leading to incomplete waste gas treatment and non-compliance with emission standards.

[0007] Preferably, a base plate is fixedly connected to the bottom of the processing tower, and support plates are symmetrically fixedly connected to the top of the processing tower. The outer wall of the annular tube is fixedly connected to one side of the two support plates. The outer wall of the connecting shaft is rotatably connected inside the processing tower. A fixing frame is fixedly connected to the outer wall of the processing tower. One side of the drive motor is installed in the fixing frame. An input pipe is fixedly connected to the outer wall of the annular tube, and the outer wall of the input pipe is fixedly connected inside the processing tower.

[0008] Preferably, an air inlet pipe is fixedly connected to the bottom of the processing tower, and an air outlet pipe is fixedly connected to the top of the processing tower.

[0009] Preferably, the top of the intake pipe is rotatably connected to a rotating shaft, and the outer wall of the rotating shaft is symmetrically fixedly connected to a baffle, the outer wall of the baffle being disposed inside the intake pipe.

[0010] Preferably, a drive wheel is fixedly connected to the outer wall of the connecting shaft, a belt is sleeved on the outer wall of the drive wheel, a driven wheel is sleeved on the inner wall of one end of the belt, and the inner wall of the driven wheel is fixedly connected to the outer wall of the shaft.

[0011] Preferably, the agitation assembly includes a servo motor, the bottom of which is mounted on the inner wall of the bottom of the base plate. A stirring shaft is fixedly connected to the output end of the servo motor. Stirring blades are uniformly fixedly connected to the outer wall of the stirring shaft. A bevel gear one is fixedly connected to the top of the stirring blades. A bevel gear two is symmetrically meshed with the tooth ends of the bevel gear one. A rotating shaft two is fixedly connected to the inner wall of the bevel gear two. A connecting frame is fixedly connected to the top of the stirring shaft. The outer wall of the rotating shaft two is rotatably connected to the connecting frame. Stirring blades are uniformly fixedly connected to the outer wall of the rotating shaft two.

[0012] Preferably, a driving wheel 2 is fixedly connected to the bottom of the stirring shaft, a belt 2 is sleeved on the outer wall of the driving wheel 2, a driven wheel 2 is sleeved on the inner wall of one end of the belt 2, a rotating shaft 3 is fixedly connected to the inner wall of the driven wheel 2, the bottom of the rotating shaft 3 is rotatably connected to the bottom plate, the top of the rotating shaft 3 is rotatably connected to the air inlet pipe, and fan blades are uniformly fixedly connected to the top of the rotating shaft 3.

[0013] Preferably, a filter plate is fixedly connected to the bottom of the processing tower, the outer wall of the stirring shaft is rotatably connected to the filter plate, and a discharge pipe is fixedly connected to the bottom of the processing tower, with the discharge pipe located at the bottom of the filter plate.

[0014] Preferably, the inner wall of the treatment tower is fixedly connected with an adsorption mesh one and an adsorption mesh two in sequence, and the pore size of the adsorption mesh one and the adsorption mesh two decreases from bottom to top.

[0015] Preferably, a support column is uniformly and fixedly connected to the top of the air outlet pipe, and a cover plate is fixedly connected to the top of the support column.

[0016] Working principle: The waste gas to be treated enters the treatment tower through the inlet pipe. The servo motor starts and drives the stirring shaft to rotate the second drive wheel. Through the second belt, the second driven wheel and the third shaft rotate, causing the fan blades to rotate at high speed and create a negative pressure suction force in the inlet pipe, which draws in the waste gas. At the same time, the stirring shaft and stirring blades are driven to rotate horizontally to agitate the gas and liquid. The stirring shaft drives the first bevel gear and the connecting frame to rotate, which in turn drives the second bevel gear to rotate the second rotating shaft and the stirring blades vertically, forming a multi-directional three-dimensional agitation. When the drive motor is started, its output end drives the connecting shaft and bevel gear two to rotate, which in turn drives bevel gear one and the rotating shaft to rotate. The gear ring rotates with the rotating shaft, causing the circular gear to rotate, so that the hollow tube, connecting tube and nozzle make a circular rotation motion to achieve spraying without dead angles. The treatment liquid enters the annular tube through the input pipe, is diverted to the hollow tube and connecting tube and then sprayed downward from the nozzle, and comes into counter-current contact with the rising exhaust gas for spray absorption and purification. At the same time, the drive motor drives the connecting shaft and the drive wheel to rotate, and the belt drives the driven wheel and the shaft to rotate, causing the baffle to rotate in the intake pipe to change the airflow cross-sectional area, so that the intake speed and intake volume change intermittently and continuously. After the reaction, the treated liquid falls onto the filter plate for solid-liquid separation. The filtered clean waste liquid is discharged through the discharge pipe for recycling. Solid impurities can be removed by opening the sealed door on the side wall of the treatment tower. The exhaust gas, after being absorbed by the spray, continues upward and passes through adsorption mesh one and adsorption mesh two in sequence for gradient adsorption filtration. The exhaust pipe is then covered by a cover plate.

[0017] This invention provides a waste gas treatment device for pharmaceutical intermediates. It has the following beneficial effects: 1. This invention drives the connecting shaft to rotate via the output of a drive motor. The connecting shaft then drives a second bevel gear to rotate synchronously. The teeth of the second bevel gear mesh with the first bevel gear, which in turn drives the first bevel gear and the rotating shaft to rotate. The gear ring rotates synchronously with the rotating shaft. When the gear ring rotates, it synchronously drives all the circular gears to rotate around their own axes, which in turn drives each hollow tube to rotate synchronously. During the rotation of the hollow tube, the nozzles on the connecting tube rotate synchronously in a 360° circular motion, achieving a seamless rotating spray. This reduces the spray blind zone of traditional fixed nozzles, significantly expands the spray coverage of the treatment liquid, and allows the treatment liquid to fully and evenly contact the rising pharmaceutical intermediate waste gas, enhancing the absorption and purification effect of the waste gas. This invention solves the problem that traditional spray absorption operations often use fixed nozzle structures, which have obvious spray blind zones and cannot achieve sufficient contact between the gas and liquid phases in the tower, thus reducing the treatment effect of the waste gas and easily leading to incomplete waste gas treatment and non-compliance with emission standards.

[0018] 2. In this invention, the connecting shaft drives the second bevel gear to rotate, which in turn drives the first driving wheel to rotate. The first driving wheel drives the first driven wheel to rotate synchronously via the first belt. This causes the first rotating shaft to drive the two baffles to rotate synchronously inside the air inlet pipe. By dynamically changing the cross-sectional area of ​​the air passage inside the air inlet pipe through the rotation of the baffles, the intermittent and continuous changes in the air intake speed and volume are achieved. This avoids the problem of excessive instantaneous air intake volume of waste gas caused by batch production of pharmaceutical intermediates, ensuring that the waste gas entering the treatment tower can rise at a uniform and stable speed, reserving sufficient contact time for subsequent full reaction with the treatment liquid, thereby improving the effect of waste gas treatment.

[0019] 3. In this invention, a servo motor drives a stirring shaft and multiple stirring blades to rotate synchronously in a horizontal direction, which agitates the rising waste gas and falling treatment liquid in the treatment tower. At the same time, as the stirring shaft drives the stirring blades to rotate, it also drives the first bevel gear and the connecting frame to rotate. When the first bevel gear rotates, it causes the second rotating shaft to drive the stirring blades to rotate synchronously in a vertical direction, forming a multi-directional three-dimensional stirring effect with the horizontally rotating stirring blades. This greatly increases the turbulence and residence time of the waste gas inside the treatment tower, further improving the purification effect of the waste gas.

[0020] 4. In this invention, while the servo motor drives the stirring component to operate, the rotating shaft synchronously drives the second driving wheel to rotate. The second driving wheel transmits torque to the second driven wheel through the second belt, causing the second driven wheel to rotate synchronously. The second driven wheel drives the third rotating shaft to rotate stably inside the air inlet pipe. The fan blades rotate synchronously at high speed with the third rotating shaft, forming a continuous negative pressure suction inside the air inlet pipe. This promotes the continuous and stable intake of the pharmaceutical intermediate waste gas to be treated from the outside into the air inlet pipe, solving the problems of poor air intake and low treatment efficiency in traditional devices, and improving the waste gas treatment throughput and working efficiency of the entire device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the processing tower of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the processing tower of the present invention; Figure 5 This is a schematic diagram of a partial structure of the annular tube of the present invention; Figure 6 This is a partial structural diagram of the bevel gear of the present invention; Figure 7 This is a partial structural diagram of the nozzle of the present invention; Figure 8 This is a partial structural diagram of the stirring blade of the present invention; Figure 9 This is a partial structural diagram of the stirring plate of the present invention; Figure 10 This is a partial structural diagram of the mounting frame of the present invention.

[0022] The components are as follows: 1. Base plate; 2. Processing tower; 201. Support plate; 202. Annular pipe; 203. Mounting frame; 204. Rotating shaft; 205. Gear ring; 206. Circular gear; 207. Hollow tube; 208. Connecting pipe; 209. Nozzle; 210. Bevel gear one; 211. Bevel gear two; 212. Connecting shaft; 213. Drive motor; 214. Fixing frame; 215. Input pipe; 3. Inlet pipe; 301. Outlet pipe; 4. Rotating shaft one; 401. Baffle; 5. Drive wheel one. 501. Belt 1; 502. Driven wheel 1; 6. Servo motor; 6001. Stirring shaft; 601. Stirring blade; 602. Bevel gear 1; 603. Bevel gear 2; 604. Rotating shaft 2; 605. Connecting frame; 606. Stirring plate; 7. Driving wheel 2; 701. Belt 2; 702. Driven wheel 2; 703. Rotating shaft 3; 704. Fan blade; 8. Filter plate; 801. Discharge pipe; 9. Adsorption net 1; 901. Adsorption net 2; 10. Support column; 1001. Cover plate. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0024] Please see the appendix Figure 1 - Appendix Figure 7 Appendix Figure 10 This invention provides a waste gas treatment device for pharmaceutical intermediates, including a base plate 1, a treatment tower 2, and an annular pipe 202. A mounting frame 203 is fixedly connected to the bottom of the annular pipe 202. A rotating shaft 204 is rotatably connected inside the mounting frame 203. A gear ring 205 is fixedly connected to the bottom of the rotating shaft 204. A circular gear 206 is evenly meshed with the tooth ends of the gear ring 205. A hollow tube 207 is fixedly connected to the inner wall of the circular gear 206. The top of the hollow tube 207 rotates... The bottom of the annular tube 202 is dynamically connected, and the bottom of the hollow tube 207 is fixedly connected to the connecting tube 208. The outer wall of the connecting tube 208 is uniformly fixedly connected to the nozzle 209. The top of the rotating shaft 204 is fixedly connected to the bevel gear 210. The tooth end of the bevel gear 210 is meshed with the bevel gear 211. The inner wall of the bevel gear 211 is fixedly connected to the connecting shaft 212. One end of the connecting shaft 212 is equipped with a drive motor 213. The bottom of the base plate 1 is equipped with an agitator.

[0025] Specifically, as the exhaust gas enters the treatment tower 2, a spraying operation needs to be performed simultaneously. The control system of the device starts the drive motor 213, and the output of the drive motor 213 drives the connecting shaft 212 to rotate. The connecting shaft 212 drives the second bevel gear 211 to rotate synchronously. The tooth ends of the second bevel gear 211 mesh with the first bevel gear 210, thereby driving the first bevel gear 210 and the rotating shaft 204 to rotate. The gear ring 205 rotates synchronously with the rotating shaft 204. When the gear ring 205 rotates, it synchronously drives all the circular gears 206 to rotate around their own axes, thereby driving each hollow tube 207 to rotate synchronously. During the rotation of the hollow tube 207... The nozzles 209 on the connecting pipe 208 rotate 360° synchronously, achieving rotational spraying without dead angles. This reduces the spray blind zone of traditional fixed nozzles 209, significantly expands the spray coverage of the treatment liquid, and allows the treatment liquid to fully and evenly contact the rising pharmaceutical intermediate waste gas, enhancing the absorption and purification effect of the waste gas. This avoids the problem of incomplete waste gas treatment and non-compliance with emission standards caused by spray blind zones. At the same time, the stirring component increases the turbulence and residence time of the waste gas inside the treatment tower 2, allowing the pollutants that are not fully absorbed in the waste gas to mix and react more fully with the treatment liquid, further improving the purification effect of the waste gas.

[0026] Please see the appendix Figure 1 - Appendix Figure 5The bottom of the processing tower 2 is fixedly connected to a base plate 1, and the top of the processing tower 2 is symmetrically fixedly connected to a support plate 201. The outer wall of the annular pipe 202 is fixedly connected to one side of the two support plates 201. The outer wall of the connecting shaft 212 is rotatably connected inside the processing tower 2. The outer wall of the processing tower 2 is fixedly connected to a fixing frame 214. One side of the drive motor 213 is installed inside the fixing frame 214. The outer wall of the annular pipe 202 is fixedly connected to an input pipe 215. The outer wall of the input pipe 215 is fixedly connected inside the processing tower 2.

[0027] Specifically, the treatment liquid enters the annular pipe 202 through the input pipe 215. The support plate 201 provides stable support for the annular pipe 202. The treatment liquid in the annular pipe 202 is diverted to multiple hollow pipes 207 and connecting pipes 208, and finally sprayed downward from the evenly distributed nozzles 209, making counter-current contact with the rising exhaust gas, so as to achieve spray absorption and purification of acidic gases such as HF and HCl, water-soluble VOCs, and dust aerosols in the exhaust gas. The treatment liquid can be, but is not limited to, sodium hydroxide solution. Meanwhile, the fixed frame 214 provides a stable support platform for the drive motor 213, ensuring that the drive motor 213 can operate stably and guaranteeing the normal operation of the entire spraying operation.

[0028] Please see the appendix Figure 1 - Appendix Figure 5 An air inlet pipe 3 is fixedly connected to the bottom of the processing tower 2, and an air outlet pipe 301 is fixedly connected to the top of the processing tower 2. The top of the intake pipe 3 is rotatably connected to a rotating shaft 4, and the outer wall of the rotating shaft 4 is symmetrically fixedly connected to a baffle 401, the outer wall of the baffle 401 is set inside the intake pipe 3. A drive wheel 5 is fixedly connected to the outer wall of the connecting shaft 212. A belt 501 is sleeved on the outer wall of the drive wheel 5. A driven wheel 502 is sleeved on the inner wall of one end of the belt 501. The inner wall of the driven wheel 502 is fixedly connected to the outer wall of the rotating shaft 4.

[0029] Specifically, the production process of pharmaceutical intermediates continuously emits a large amount of process waste gas. Direct discharge of this waste gas without treatment will cause a decline in regional air quality and environmental pollution. The waste gas from the production of pharmaceutical intermediates to be treated enters the treatment tower 2 through the inlet pipe 3. Simultaneously with the waste gas intake, the connecting shaft 212 drives the bevel gear 211 to rotate, which in turn drives the drive wheel 5 to rotate synchronously. The drive wheel 5 transmits torque to the driven wheel 502 via the belt 501, causing the driven wheel 502 to rotate synchronously. The driven wheel 502 then drives the rotating shaft 4 to rotate within the inlet pipe 3. The rotating shaft 4... Two baffles 401 rotate synchronously inside the air inlet pipe 3. The rotation of the baffles 401 dynamically changes the cross-sectional area of ​​the air flow inside the air inlet pipe 3, realizing intermittent and continuous changes in the air intake speed and volume. This avoids the problem of excessive instantaneous air intake volume of waste gas caused by batch production of pharmaceutical intermediates, ensuring that the waste gas entering the treatment tower 2 can rise at a uniform speed and stably, reserving sufficient contact time for subsequent full reaction with the treatment liquid, thereby improving the treatment effect of waste gas. Finally, the compliant waste gas after deep purification is discharged into the atmosphere through the air outlet pipe 301 fixed at the top of the treatment tower 2.

[0030] Please see the appendix Figure 4 Appendix Figure 5 Appendix Figure 8 Appendix Figure 9 The stirring assembly includes a servo motor 6. The bottom of the servo motor 6 is mounted on the inner wall of the bottom of the base plate 1. The output end of the servo motor 6 is fixedly connected to a stirring shaft 6001. Stirring blades 601 are uniformly fixedly connected to the outer wall of the stirring shaft 6001. A bevel gear 602 is fixedly connected to the top of the stirring blades 601. A bevel gear 603 is symmetrically meshed with the tooth ends of the bevel gear 602. A rotating shaft 604 is fixedly connected to the inner wall of the bevel gear 603. A connecting frame 605 is fixedly connected to the top of the stirring shaft 6001. The outer wall of the rotating shaft 604 is rotatably connected to the connecting frame 605. Stirring blades 606 are uniformly fixedly connected to the outer wall of the rotating shaft 604.

[0031] Specifically, when the exhaust gas enters the treatment tower 2 through the inlet pipe 3, the servo motor 6 is started by the control system of the device. The output end of the servo motor 6 drives the stirring shaft 6001 and multiple stirring blades 601 to rotate horizontally in circumferential direction, which stirs the rising exhaust gas and falling treatment liquid in the treatment tower 2 in the horizontal direction, breaks the laminar flow state of the gas and liquid phases, and enhances the gas-liquid mixing effect. Simultaneously, as the stirring shaft 6001 drives the stirring blades 601 to rotate, it also drives the bevel gear 602 and the connecting frame 605 to rotate. Since the bevel gear 602 is meshed with the bevel gear 603, when the bevel gear 602 rotates, it simultaneously drives the two bevel gears 603 to rotate around their own axes, which in turn drives the rotating shaft 604 to rotate within the connecting frame 605. The rotating shaft 604 drives the stirring blades 606 to rotate in a vertical direction in a circular motion, forming a multi-directional three-dimensional stirring effect with the horizontally rotating stirring blades 601. This increases the turbulence and residence time of the waste gas inside the treatment tower 2, allowing the pollutants that have not been fully absorbed in the waste gas to mix and react more thoroughly with the treatment liquid, further improving the purification and treatment effect of the waste gas.

[0032] Please see the appendix Figure 2 Appendix Figure 4 Appendix Figure 5 The bottom of the stirring shaft 6001 is fixedly connected to the driving wheel 7. The outer wall of the driving wheel 7 is fitted with a belt 701. One end of the belt 701 is fitted with a driven wheel 702. The inner wall of the driven wheel 702 is fixedly connected to the rotating shaft 703. The bottom of the rotating shaft 703 is rotatably connected to the bottom plate 1. The top of the rotating shaft 703 is rotatably connected to the air inlet pipe 3. Fan blades 704 are evenly fixedly connected to the top of the rotating shaft 703.

[0033] Specifically, while the servo motor 6 drives the stirring component, the stirring shaft 6001 synchronously drives the second drive wheel 7 to rotate. The second drive wheel 7 transmits torque to the second driven wheel 702 through the second belt 701, causing the second driven wheel 702 to rotate synchronously. The second driven wheel 702 drives the third rotating shaft 703 to rotate stably inside the air inlet pipe 3. The fan blade 704 rotates at high speed synchronously with the third rotating shaft 703, forming a continuous negative pressure suction inside the air inlet pipe 3. This promotes the continuous and stable intake of the pharmaceutical intermediate waste gas to be treated from the outside into the air inlet pipe 3, thereby improving the waste gas treatment throughput and working efficiency of the entire device.

[0034] Please see the appendix Figure 2 Appendix Figure 4 Appendix Figure 10 A filter plate 8 is fixedly connected to the bottom of the processing tower 2, and the outer wall of the stirring shaft 6001 is rotatably connected inside the filter plate 8. A discharge pipe 801 is fixedly connected to the bottom of the processing tower 2, and the discharge pipe 801 is located at the bottom of the filter plate 8. The inner wall of the treatment tower 2 is fixedly connected with adsorption mesh 1 9 and adsorption mesh 2 901 in sequence, and the pore size of adsorption mesh 1 9 and adsorption mesh 2 901 decreases from bottom to top.

[0035] Specifically, during the spray purification process, the treated liquid, which reacts with the exhaust gas, carries the absorbed pollutants, dust, crystalline salts, and other impurities. Under the influence of gravity, it falls onto the filter plate 8. The filter plate 8 performs solid-liquid separation filtration on the falling waste liquid, trapping solid impurities and crystalline particles in the waste liquid to prevent impurities from clogging subsequent pipelines. The filtered waste liquid will remain temporarily at the bottom of the treatment tower 2 and will eventually be discharged from the treatment tower 2 through the discharge pipe 801 for further treatment and recycling, reducing the consumption of treatment agents. At the same time, the treatment tower 2 is equipped with a sealed door on the side wall, and the solid impurities on the filter plate 8 can be treated by opening the sealed door. After being absorbed by spraying, the waste gas continues to flow upward, passing sequentially through adsorption mesh 9 and adsorption mesh 901. Adsorption mesh 9 can be made of porous activated carbon mesh or glass fiber filter, while adsorption mesh 901 can be made of activated carbon fiber mesh or modified molecular sieve adsorption mesh. The pore size of adsorption mesh 9 and adsorption mesh 901 decreases from bottom to top. Adsorption mesh 9 can initially intercept dust, pharmaceutical aerosols, and large droplets, while adsorbing some VOCs and acidic gases. Adsorption mesh 901 deeply adsorbs residual VOCs, trace amounts of acidic gases, and odorous substances, ensuring that the effluent meets the standards. This achieves staged adsorption of gases in the waste gas, realizing deep purification treatment of the waste gas.

[0036] Please see the appendix Figure 1 Appendix Figure 10 The top of the air outlet pipe 301 is uniformly and fixedly connected with support columns 10, and the top of the support columns 10 is fixedly connected with a cover plate 1001.

[0037] Specifically, the support column 10 ensures that there is space between the cover plate 1001 and the air outlet pipe 301, so as not to affect the normal operation of the air outlet pipe 301. The cover plate 1001 can cover the exhaust pipe 301 to prevent external debris, rainwater, etc. from entering the treatment tower 2, avoid damage to the equipment inside the treatment tower 2, and also ensure the pure emission of the treated exhaust gas.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for pharmaceutical intermediates, comprising a base plate (1), a treatment tower (2), and an annular pipe (202), characterized in that: A mounting frame (203) is fixedly connected to the bottom of the annular tube (202). A rotating shaft (204) is rotatably connected inside the mounting frame (203). A gear ring (205) is fixedly connected to the bottom of the rotating shaft (204). A circular gear (206) is evenly meshed with the tooth ends of the gear ring (205). A hollow tube (207) is fixedly connected to the inner wall of the circular gear (206). The top of the hollow tube (207) is rotatably connected to the bottom of the annular tube (202). The bottom of each of the base plates (1) is fixedly connected to a connecting pipe (208), and nozzles (209) are evenly fixedly connected to the outer wall of the connecting pipe (208). The top of the rotating shaft (204) is fixedly connected to a bevel gear (210), and the tooth end of the bevel gear (210) is meshed with a bevel gear (211). The inner wall of the bevel gear (211) is fixedly connected to a connecting shaft (212), and a drive motor (213) is installed at one end of the connecting shaft (212). An agitation assembly is installed at the bottom of the base plate (1).

2. The waste gas treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The bottom of the processing tower (2) is fixedly connected to a base plate (1), and the top of the processing tower (2) is symmetrically fixedly connected to a support plate (201). The outer wall of the annular tube (202) is fixedly connected to one side of the two support plates (201). The outer wall of the connecting shaft (212) is rotatably connected inside the processing tower (2). The outer wall of the processing tower (2) is fixedly connected to a fixed frame (214). One side of the drive motor (213) is installed inside the fixed frame (214). The outer wall of the annular tube (202) is fixedly connected to an input pipe (215). The outer wall of the input pipe (215) is fixedly connected inside the processing tower (2).

3. The waste gas treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The bottom of the processing tower (2) is fixedly connected to an air inlet pipe (3), and the top of the processing tower (2) is fixedly connected to an air outlet pipe (301).

4. The waste gas treatment device for pharmaceutical intermediates according to claim 3, characterized in that: The top of the air intake pipe (3) is rotatably connected to a rotating shaft (4), and a baffle (401) is symmetrically fixedly connected to the outer wall of the rotating shaft (4). The outer wall of the baffle (401) is located inside the air intake pipe (3).

5. The waste gas treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The outer wall of the connecting shaft (212) is fixedly connected to the drive wheel (5), the outer wall of the drive wheel (5) is fitted with a belt (501), the inner wall of one end of the belt (501) is fitted with a driven wheel (502), and the inner wall of the driven wheel (502) is fixedly connected to the outer wall of the rotating shaft (4).

6. The waste gas treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The stirring assembly includes a servo motor (6), the bottom of which is mounted on the inner wall of the bottom of the base plate (1). The output end of the servo motor (6) is fixedly connected to a stirring shaft (6001). Stirring blades (601) are uniformly fixedly connected to the outer wall of the stirring shaft (6001). A bevel gear (602) is fixedly connected to the top of the stirring blades (601). A bevel gear (603) is symmetrically meshed with the tooth ends of the bevel gear (602). A rotating shaft (604) is fixedly connected to the inner wall of the bevel gear (603). A connecting frame (605) is fixedly connected to the top of the stirring shaft (6001). The outer wall of the rotating shaft (604) is rotatably connected to the connecting frame (605). Stirring blades (606) are uniformly fixedly connected to the outer wall of the rotating shaft (604).

7. The waste gas treatment device for pharmaceutical intermediates according to claim 6, characterized in that: The bottom of the stirring shaft (6001) is fixedly connected to the second driving wheel (7), the outer wall of the second driving wheel (7) is fitted with the second belt (701), the inner wall of one end of the second belt (701) is fitted with the second driven wheel (702), the inner wall of the second driven wheel (702) is fixedly connected to the third rotating shaft (703), the bottom of the third rotating shaft (703) is rotatably connected to the bottom plate (1), the top of the third rotating shaft (703) is rotatably connected to the air inlet pipe (3), and the top of the third rotating shaft (703) is uniformly fixedly connected with fan blades (704).

8. The waste gas treatment device for pharmaceutical intermediates according to claim 6, characterized in that: The bottom of the processing tower (2) is fixedly connected to a filter plate (8), the outer wall of the stirring shaft (6001) is rotatably connected to the filter plate (8), and the bottom of the processing tower (2) is fixedly connected to a discharge pipe (801), which is located at the bottom of the filter plate (8).

9. The waste gas treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The inner wall of the treatment tower (2) is fixedly connected with an adsorption mesh one (9) and an adsorption mesh two (901) in sequence, and the pore size of the adsorption mesh one (9) and the adsorption mesh two (901) decreases from bottom to top.

10. The waste gas treatment device for pharmaceutical intermediates according to claim 3, characterized in that: The top of the air outlet pipe (301) is uniformly and fixedly connected with a support column (10), and the top of the support column (10) is fixedly connected with a cover plate (1001).

Images