A tail gas absorption device for producing methyl benzoate
By designing a exhaust gas absorption device for the production of methyl betinate, the harmful components in the exhaust gas are treated with a combination of water and adsorbent, and the unabsorbed parts are treated by activated carbon filter cotton, the problems of degradation of water absorption capacity and toxicity after exhaust gas absorption in the prior art are solved, and the recycling of wastewater and efficient removal of exhaust gas are achieved.
Patent Information
- Application Number
- CN202421439844.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-21
AI Technical Summary
After the existing exhaust gas absorption device absorbs the exhaust gas generated during the production process of methyl benting acid, the water absorption capacity will be greatly reduced, and frequent water replacement is required, which increases the workload of staff. The absorbed water is highly toxic and has the risk of environmental pollution and health hazards.
An exhaust gas absorption device is designed, including a box, a wastewater treatment component and a waste gas treatment component. The device absorbs harmful components in the exhaust gas through the water in the box. When the water absorption capacity decreases, the wastewater will be treated and re-discharged into the box to realize the recycling of wastewater. During the treatment process, the stirring leaves and adsorbent are used to absorb and remove pollutants, and the exhaust gas components that are not absorbed by water are treated by activated carbon filtering cotton.
The timely treatment and recycling of wastewater has been achieved, the absorption capacity of exhaust gas has been improved, the workload of staff has been reduced, and the toxicity of exhaust gas has been significantly reduced through multiple treatment methods, protecting the environment and human health.
Smart Images
Figure CN222709338U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of methyl pentanoate production equipment, in particular to a tail gas absorption device for producing methyl pentanoate. Background Art
[0002] The chemical name of methyl pentanoate is 3,3-dimethyl-4-pentenoate, which is a colorless, transparent liquid with an ester aroma and is flammable. It is an important intermediate for the synthesis of many pyrethroid insecticides for hygiene and clothing.
[0003] Industrial production of methyl benzoate is generally obtained by synthesizing isopentenol and trimethyl orthoacetate in the presence of a catalyst. Tail gas is generated during the production process. The tail gas includes methanol, volatilization of raw materials and final products, among which methanol accounts for the highest proportion in the tail gas. Methanol, raw materials and final products are all highly toxic and need to be treated using a tail gas absorption device. The existing tail gas absorption device absorbs the tail gas generated during the production of methyl benzoate through water. When water absorbs a large amount of tail gas, the subsequent absorption capacity will drop significantly, and the water must be replaced in time, increasing the workload of the staff. In addition, the water body after absorbing the tail gas is highly toxic. If only simple drainage and water replacement are performed, improper operation may cause pollution to the environment and even endanger the health of the staff. Summary of the invention
[0004] The utility model aims to provide a tail gas absorption device for producing methyl benzoate, which can treat waste water in time and automatically discharge the treated water back into the box for the next absorption operation, thereby realizing the recycling of waste water, saving resources, improving the absorption capacity of tail gas and reducing workload.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a tail gas absorption device for producing methyl benzoate, comprising a box body, the bottom of the box body is fixedly connected to a water outlet pipe, the lower end surface of the water outlet pipe is fixedly connected to a wastewater treatment component, the wastewater treatment component comprises a wastewater tank, the top center of the wastewater tank is fixedly connected to a motor, the output end of the motor extends to the inside of the wastewater tank, the output end of the motor is fixedly connected to a stirring rod, the outer surface of the stirring rod is fixedly connected to a stirring blade, the number of the stirring blades is multiple, and ... is fixedly connected to a stirring rod, the outer surface of the stirring rod is fixedly connected to a stirring blade, the number of the stirring blades is multiple, and the wastewater treatment component comprises a wastewater tank, the top center of the wastewater tank is fixedly connected to a motor, the output end of the motor is fixedly connected to a stirring rod, the output end of the motor is fixedly connected to a stirring blade, the output end of the motor is fixedly connected to a stirring rod, the output end of the motor is fixedly connected to a stirring blade, the output end of the motor is fixedly connected to a stirring rod, the output end of the motor is fixedly connected to A support block is fixedly connected to the inner wall of the water tank, and there are four support blocks. The four support blocks are respectively located at the four corners of the wastewater tank. A filter plate is installed on the upper surface of the four support blocks, and the filter plate is located below the stirring blade. A through hole is opened on the surface of the filter plate, and there are multiple through holes. An L-shaped plate is fixedly connected to the upper surface of the filter plate, and there are multiple L-shaped plates. Multiple L-shaped plates are located between adjacent through holes. A baffle is fixedly connected to the upper surface of the filter plate, and the baffle is located at the front end of the filter plate.
[0006] Optionally, a medicine delivery pipe is fixedly connected to the top of the wastewater tank, a cover plate is installed on the top of the medicine delivery pipe, and a handle is fixedly connected to the top of the cover plate.
[0007] Optionally, a first connecting pipe is fixedly connected to the back of the wastewater tank, an upper port of the first connecting pipe is fixedly connected to a water pump, an output end of the water pump is fixedly connected to a second connecting pipe, and an upper port of the second connecting pipe is fixedly connected to the outer surface of the tank.
[0008] Optionally, a first valve is installed inside the water outlet pipe, and a second valve is fixedly connected inside the second connecting pipe.
[0009] Optionally, an air inlet pipe is fixedly connected to the top of the box body, an exhaust gas treatment component is fixedly connected to the top of the air inlet pipe, the exhaust gas treatment component includes an exhaust box, a fan is fixedly connected to the left side wall of the exhaust box, activated carbon filter cotton is installed inside the exhaust box, the air inlet pipe is located between the fan and the activated carbon filter cotton, and an exhaust pipe is fixedly connected to the right side wall of the exhaust box.
[0010] Optionally, an air supply pipe is fixedly connected to the left side wall of the box, and the other end of the air supply pipe extends into the internal water of the box.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. The utility model is provided with a box body, a wastewater treatment component, an air delivery pipe, a water outlet pipe, a first valve, a first connecting pipe, a second connecting pipe, a first valve, a second valve and a water pump. When in use, the tail gas generated in the production process of methyl benzoate enters the water in the box body through the air delivery pipe, and the water-soluble components in the tail gas, such as methanol, can be absorbed by the water. When the water absorbs most of the tail gas, the first valve is opened, and the waste water is discharged to the inside of the wastewater tank through the water outlet pipe. At this time, the cover is opened, and the adsorbent is added to the waste water through the drug delivery pipe. The motor works, and the output end of the motor drives the agitator The stirring rod rotates, and the stirring blades on the stirring rod rotate accordingly, so that the adsorbent is fully in contact with and absorbs pollutants such as methanol in the wastewater. After the motor is turned off, the adsorbent particles that have absorbed the pollutants will sink to the filter plate. The L-shaped plate on the filter plate can prevent the particles from falling on the bottom of the box through the through hole. At the same time, the inclined setting of the filter plate can make the adsorbent particles fall on the baffle, which is convenient for centralized collection and treatment. After opening the second valve, the water pump is started to extract the treated water through the first connecting pipe, and then discharged to the inside of the box through the second connecting pipe for the next tail gas absorption operation. The utility model can treat wastewater in time, and automatically discharge the treated water back into the box for the next absorption operation, realizing the recycling of wastewater, saving resources, improving the absorption capacity of tail gas, and reducing workload.
[0013] 2. The utility model is provided with a box body, an air supply pipe and an exhaust gas treatment component. When in use, the exhaust gas enters the water in the box body through the air supply pipe, and the components not absorbed by the water will be concentrated in the upper space of the box body. At this time, the fan will generate airflow to guide the exhaust gas inside the box body, so that the exhaust gas can enter the exhaust gas box through the air inlet pipe, and pass through the activated carbon filter cotton and be discharged through the air outlet pipe. In the process of the exhaust gas passing through the activated carbon filter cotton, the harmful substances in the exhaust gas will be absorbed by the activated carbon. The toxicity of the exhaust gas after water absorption and activated carbon treatment has been basically eliminated, and it can be collected or discharged in a centralized manner. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;
[0017] Figure 3For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0018] Figure 4 It is a schematic diagram of the main partial cross-section three-dimensional structure of the utility model.
[0019] In the figure: 1. box body; 2. water outlet pipe; 3. wastewater treatment component; 301. wastewater tank; 302. motor; 303. stirring rod; 304. stirring blade; 305. support block; 306. filter plate; 307. through hole; 308. L-shaped plate; 309. baffle; 310. medicine delivery pipe; 311. cover plate; 312. handle; 4. first connecting pipe; 5. water pump; 6. second connecting pipe; 7. first valve; 8. second valve; 9. waste gas treatment component; 901. waste gas tank; 902. fan; 903. activated carbon filter cotton; 904. outlet pipe; 10. inlet pipe; 11. air delivery pipe. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0024] Reference Figure 1-4, now an exhaust gas absorption device for producing methyl benzoate provided by the embodiment of the utility model is described. An exhaust gas absorption device for producing methyl benzoate comprises a box body 1, a water outlet pipe 2 is fixedly connected to the bottom of the box body 1, and a ramp is provided at the bottom of the box body 1 to facilitate the discharge of wastewater through the water outlet pipe 2; a first valve 7 is installed inside the water outlet pipe 2, and a wastewater treatment component 3 is fixedly connected to the lower end face of the water outlet pipe 2, and the wastewater treatment component 3 comprises a wastewater tank 301, a motor 302 is fixedly connected to the top center of the wastewater tank 301, and the output end of the motor 302 extends to the inside of the wastewater tank 301, and a stirring rod 303 is fixedly connected to the output end of the motor 302. When the motor 302 is working, the output end of the motor 302 drives the stirring rod 303 to rotate; a stirring blade 304 is fixedly connected to the outer surface of the stirring rod 303, There are multiple stirring blades 304, and when the stirring rod 303 rotates, it will drive the stirring blades 304 to rotate, so that the pollutants in the wastewater can be fully contacted with the adsorbent; the inner wall of the wastewater tank 301 is fixedly connected with a support block 305, and the number of the support blocks 305 is four. The four support blocks 305 are respectively located at the four corners of the wastewater tank 301, and the four support blocks 305 are installed inclined to the horizontal plane. The upper surfaces of the four support blocks 305 are installed with filter plates 306, and the filter plates 306 are located below the stirring blades 304, so that the stirring blades 304 will not contact the filter plates 306 when rotating; the surface of the filter plate 306 is provided with through holes 307, and the number of through holes 307 is multiple. The upper surface of the filter plate 306 is fixedly connected with L The number of L-shaped plates 308 is multiple, and the multiple L-shaped plates 308 are located between adjacent through holes 307. The gaps between the multiple L-shaped plates 308 can prevent the adsorbent particles from entering the through holes 307; the upper surface of the filter plate 306 is fixedly connected with a baffle 309, and the baffle 309 is located at the front end of the filter plate 306. After the adsorbent particles adsorb pollutants, they will slide onto the baffle 309. When the water in the wastewater tank 301 is discharged, the filter plate 306 can be removed to centrally treat the adsorbent; the top of the wastewater tank 301 is fixedly connected with a drug delivery pipe 310, and the adsorbent can be added to the wastewater for water purification through the drug delivery pipe 310; the top of the drug delivery pipe 310 is installed with a cover plate 311, and the cover plate 311 1 is fixedly connected with a handle 312 on the top, and a first connecting pipe 4 is fixedly connected with the back of the wastewater tank 301, and the first connecting pipe 4 is located below the filter plate 306. The upper port of the first connecting pipe 4 is fixedly connected with a water pump 5. When the wastewater treatment is completed, the water pump 5 can be started to pump water from the bottom of the wastewater tank 301 into the first connecting pipe 4. The output end of the water pump 5 is fixedly connected with a second connecting pipe 6, and the upper port of the second connecting pipe 6 is fixedly connected to the outer surface of the box body 1. The water pump 5 discharges the water in the first connecting pipe 4 to the inside of the box body 1 through the second connecting pipe 6. The inside of the second connecting pipe 6 is fixedly connected with a second valve 8, and the second valve 8 can prevent the exhaust gas in the box body 1 from entering the inside of the second connecting pipe 6.
[0025] Compared with the prior art, the tail gas absorption device for producing methyl benzoate provided by the utility model can timely treat waste water and automatically discharge the treated water back into the box for the next absorption operation, thereby realizing the recycling of waste water, saving resources, improving the absorption capacity of tail gas and reducing workload.
[0026] In another embodiment of the present invention, please refer to Figures 1 to 4 An air intake pipe 10 is fixedly connected to the top of the box body 1, and an exhaust gas treatment component 9 is fixedly connected to the top of the air intake pipe 10. The exhaust gas treatment component 9 includes an exhaust box 901. A fan 902 is fixedly connected to the left wall of the exhaust box 901. When the fan 902 is working, it will generate airflow to guide the exhaust gas inside the box body 1, so that the exhaust gas can enter the exhaust box 901 through the air intake pipe 10; an activated carbon filter cotton 903 is installed inside the exhaust box 901. When the exhaust gas passes through the activated carbon filter cotton 903, the harmful substances in the exhaust gas will be absorbed by the activated carbon; the air intake pipe 10 is located between the fan 902 and the activated carbon filter cotton 903, and the right side wall of the exhaust box 901 is fixedly connected to the exhaust pipe 904.
[0027] In another embodiment of the present invention, please refer to Figures 1 to 4 The left side wall of the box body 1 is fixedly connected with an air supply pipe 11, and the other end of the air supply pipe 11 extends into the internal water of the box body 1. The air supply pipe 11 needs to have a certain length to prevent back suction.
[0028] Working principle: When in use, the tail gas generated during the production of methyl benzoate enters the water in the box 1 through the air delivery pipe 2, and the water-soluble components in the tail gas, such as methanol, can be absorbed by the water. When the water absorbs most of the tail gas, the first valve 7 is opened, and the waste water is discharged into the waste water tank 301 through the outlet pipe 2. At this time, the cover plate 311 is opened, and the adsorbent is added to the waste water through the drug delivery pipe 310. The motor 302 works, and the output end of the motor 302 drives the stirring rod 303 to rotate, and the stirring blade 304 on the stirring rod 303 rotates accordingly, so that the adsorbent and the waste water are mixed. The methanol and other pollutants are fully contacted and absorbed. After the motor 302 is turned off, the adsorbent particles that have absorbed the pollutants will sink to the filter plate 306. The L-shaped plate 308 on the filter plate 306 can prevent the particles from falling on the bottom of the box body 1 through the through hole 307. At the same time, the filter plate 306 is tilted to allow the adsorbent particles to fall on the baffle 309, which is convenient for centralized collection and treatment. After opening the second valve 8, start the water pump 5, and extract the treated water through the first connecting pipe 4, and then discharge it to the inside of the box body 1 through the second connecting pipe 6 for the next exhaust gas absorption operation.
[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A tail gas absorption device for producing methyl benzoate, comprising a housing (1), characterized in that: The bottom of the box body (1) is fixedly connected to a water outlet pipe (2), the lower end surface of the water outlet pipe (2) is fixedly connected to a wastewater treatment component (3), the wastewater treatment component (3) comprises a wastewater tank (301), the top center of the wastewater tank (301) is fixedly connected to a motor (302), the output end of the motor (302) extends into the interior of the wastewater tank (301), the output end of the motor (302) is fixedly connected to a stirring rod (303), the outer surface of the stirring rod (303) is fixedly connected to stirring blades (304), the number of the stirring blades (304) is plural, the inner wall of the wastewater tank (301) is fixedly connected to a support block (305), the number of the support blocks (305) is four, and the four support blocks (305) are fixedly connected to the inner wall of the wastewater tank (301). The support blocks (305) are respectively located at the four corners of the wastewater tank (301); filter plates (306) are installed on the upper surfaces of the four support blocks (305); the filter plates (306) are located below the stirring blades (304); a through hole (307) is opened on the surface of the filter plate (306); the number of the through holes (307) is multiple; an L-shaped plate (308) is fixedly connected to the upper surface of the filter plate (306); the number of the L-shaped plates (308) is multiple; the multiple L-shaped plates (308) are located between adjacent through holes (307); a baffle (309) is fixedly connected to the upper surface of the filter plate (306); the baffle (309) is located at the front end of the filter plate (306).
2. The tail gas absorption device for producing methyl benzoate according to claim 1, characterized in that: A medicine delivery pipe (310) is fixedly connected to the top of the wastewater tank (301), a cover plate (311) is installed on the top of the medicine delivery pipe (310), and a handle (312) is fixedly connected to the top of the cover plate (311).
3. The tail gas absorption device for producing methyl benzoate according to claim 1, characterized in that: The back of the waste water tank (301) is fixedly connected to a first connecting pipe (4), the upper end of the first connecting pipe (4) is fixedly connected to a water pump (5), the output end of the water pump (5) is fixedly connected to a second connecting pipe (6), and the upper end of the second connecting pipe (6) is fixedly connected to the outer surface of the tank body (1).
4. The tail gas absorption device for producing methyl benzoate according to claim 3, characterized in that: A first valve (7) is installed inside the water outlet pipe (2), and a second valve (8) is fixedly connected inside the second connecting pipe (6).
5. The tail gas absorption device for producing methyl benzoate according to claim 1, characterized in that: The top of the box body (1) is fixedly connected to an air intake pipe (10), the top of the air intake pipe (10) is fixedly connected to an exhaust gas treatment component (9), the exhaust gas treatment component (9) comprises an exhaust gas box (901), the left side wall of the exhaust gas box (901) is fixedly connected to a fan (902), an activated carbon filter cotton (903) is installed inside the exhaust gas box (901), the air intake pipe (10) is located between the fan (902) and the activated carbon filter cotton (903), and the right side wall of the exhaust gas box (901) is fixedly connected to an exhaust pipe (904).
6. The tail gas absorption device for producing methyl benzoate according to claim 1, characterized in that: An air supply pipe (11) is fixedly connected to the left side wall of the box body (1), and the other end of the air supply pipe (11) extends into the internal water of the box body (1).