Solid separation equipment for methyl propionate production and use method of solid separation equipment

Abstract

The invention discloses solid separation equipment for methyl propionate production and a use method thereof, and relates to the field of methyl propionate production equipment.The solid separation equipment comprises a solid separation tower body, a solid separation mechanism and a filter screen flushing mechanism are arranged in the solid separation tower body, and the filter screen flushing mechanism is arranged over the solid separation mechanism; the solid separation mechanism comprises a solid impurity filter cylinder, a separation bin and a lifting driving assembly, and a discharging round opening is formed in the solid impurity filter cylinder. In the solid separation tower, a heavy electric telescopic rod in the lifting driving assembly drives the separation bin to rise, a blocked water outlet hole of the separation bin rises to a supernatant area of a methyl propionate mixture, and supernatant is guided into the lower end of the interior of the solid separation tower body through the water outlet hole, so that a solid catalyst is prevented from blocking filter holes; therefore, the solid impurity filter cartridge and the separation bin can continuously filter a methyl propionate mixture, and continuity of a filtering process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of methyl propionate production equipment, in particular to solid separation equipment for methyl propionate production and a use method thereof. Background Art

[0002] Methyl propionate is a colorless transparent liquid. In the industrial preparation of methyl propionate, methanol and propionic acid are added to a reactor in a certain proportion, and a solid catalyst is added to carry out an esterification reaction. The mixture after the reaction contains methyl propionate, unreacted methanol and propionic acid, water, and a solid catalyst. Therefore, solid classification equipment is required to separate the solid catalyst from the mixture.

[0003] For example, a liquid separation device for a catalyst solid-liquid mixture with a Chinese patent publication number of CN216537253U includes a separation casing, both sides of the separation casing are provided with support plates, a plurality of limit grooves are provided inside the top of the support plate, a support frame is provided inside the separation casing above the support plate, and a plurality of rollers are provided on both sides of the bottom of the support frame.

[0004] Existing solid separation equipment often uses filtration to separate solid catalysts from organic mixtures. However, during the separation process, the solid catalyst can easily clog the filter holes on the filter screen. As the number of clogged filter holes increases, the efficiency of the filter screen in filtering solid impurities will drop significantly, which will not only affect the continuity and efficiency of production, but also cause the equipment to be frequently shut down for cleaning and maintenance, increasing production costs and time costs. Summary of the invention

[0005] The object of the present invention is to provide a solid separation device for methyl propionate production and a method for using the same, so as to solve the problem that the solid catalyst proposed in the above background technology is easy to clog the filter holes on the filter screen during the separation process. As the number of clogged filter holes increases, the efficiency of the filter screen in filtering solid impurities will be greatly reduced, which not only affects the continuity and efficiency of production, but also causes the equipment to be frequently shut down for cleaning and maintenance.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a solid separation device for producing methyl propionate, comprising a solid separation tower body, wherein a solid separation mechanism and a filter screen flushing mechanism are arranged inside the solid separation tower body, wherein the filter screen flushing mechanism is arranged directly above the solid separation mechanism, wherein the solid separation mechanism comprises a solid impurity filter cartridge, a separation bin and a lifting drive assembly, wherein a discharge circular opening is provided inside the solid impurity filter cartridge, wherein one end of the separation bin is movably inserted into the discharge circular opening, wherein the separation bin comprises a separation circular tube, a support rod, a plurality of reinforcing rods and a mounting disc, wherein a plurality of water outlet holes are evenly arranged on the outside of the separation circular tube, wherein one end of the support rod is fixedly mounted on one end inside the separation circular tube, and the other end of the support rod is fixedly mounted at the center of the mounting disc, wherein one end of a plurality of the reinforcing rods is fixedly mounted on the outside of the support rod, and the other end of a plurality of the reinforcing rods is fixedly mounted on the inside of the separation circular tube.

[0007] Preferably, the lifting drive assembly includes a mounting base and a plurality of heavy-duty electric telescopic rods, and the driving ends of the plurality of heavy-duty electric telescopic rods are fixedly mounted below the mounting disc.

[0008] Preferably, the solid impurity filter cartridge comprises a No. 1 filter cartridge and a No. 2 filter cartridge, one end of the No. 1 filter cartridge and one end of the No. 2 filter cartridge are welded to each other, and the inner diameter of one end of the No. 2 filter cartridge is smaller than the inner diameter of one end of the No. 1 filter cartridge.

[0009] Preferably, the filter flushing mechanism includes a mounting plate No. 1, a water outlet pipe and a plurality of nozzles, the outer side of the mounting plate No. 1 is fixedly connected with a plurality of connecting rods in a circular arrangement, the other ends of the plurality of connecting rods are fixedly connected to the inner side of the water outlet pipe, and the plurality of nozzles are fixedly connected to the outer side of the water outlet pipe.

[0010] Preferably, one end of the filter flushing mechanism is transmission-connected to a vertical lifting assembly.

[0011] Preferably, the vertical lifting assembly includes a mounting frame, a driving plate, a No. 2 mounting rod and a No. 1 electric telescopic rod, the mounting frame is fixedly mounted above the mounting base, the driving plate is movably clamped inside the mounting frame, two groups of the No. 1 electric telescopic rod are symmetrically fixed to the inner side of the mounting frame, the driving ends of the two groups of the No. 1 electric telescopic rods are fixedly mounted on one side of the driving plate, the No. 2 mounting rod is fixedly mounted on the middle part of the other side of the driving plate, and one end of the No. 2 mounting rod is fixedly mounted in the middle part of the filter flushing mechanism.

[0012] Preferably, a separation recovery component is fixedly installed inside the solid separation tower body.

[0013] Preferably, the separation recovery component includes a separation collection tank and a plurality of separation outlet pipes, one end of the plurality of separation outlet pipes are respectively fixedly connected to the bottom end of the separation collection tank, and one end of the plurality of separation outlet pipes are fixedly connected to an electrically controlled valve.

[0014] Preferably, the inner wall of the separation collection tank is a curved surface.

[0015] A method for using a solid separation device for producing methyl propionate, comprising the following steps: S1. Introducing a methyl propionate mixture containing a solid catalyst into the interior of a solid impurity filter cartridge, wherein the solid catalyst is filtered out by the solid impurity filter cartridge and a separation bin and is accumulated in a gap between the solid impurity filter cartridge and the separation bin; S2, the lifting drive assembly drives the separation bin to rise, the water outlet on the separation bin rises, and the methyl propionate clear liquid located above the solid catalyst flows into the interior of the separation recovery assembly through the water outlet, and the methyl propionate clear liquid is collected; S3. After the separation operation is completed, the lifting drive assembly drives the separation bin to descend and move out of the discharge circular port, and the solid catalyst accumulated inside the solid impurity filter cartridge falls into the interior of the solid separation tower body; S4. The filter flushing mechanism flushes the inner side of the solid impurity filter cartridge and the top of the separation bin, and the flushing liquid and the filtered solid catalyst are finally recovered uniformly from the inside of the separation recovery component.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the heavy-duty electric telescopic rod in the lifting drive assembly drives the separation bin to rise, and the blocked water outlet of the separation bin rises to the supernatant area of ​​the methyl propionate mixture. The supernatant is introduced into the lower end of the solid separation tower body through the water outlet, so as to avoid the solid catalyst from clogging the filter hole, so that the solid impurity filter cartridge and the separation bin can continuously filter the methyl propionate mixture, thereby ensuring the continuity of the filtration process.

[0017] 2. In the present invention, the vertical lifting assembly drives the filter flushing mechanism to fall into the interior of the solid impurity filter cartridge, and the water pump pumps the cleaning liquid into the interior of the outlet pipe, and sprays it from a plurality of nozzles outside the outlet pipe to flush the inner wall of the solid impurity filter cartridge, and flush the solid catalyst and methyl propionate liquid attached to the inner wall of the solid impurity filter cartridge into the interior of the outlet pipe. At the same time, the cleaning liquid that flows down performs secondary flushing and soaking on the separation bin, completing the cleansing operation of the solid separation mechanism to avoid residual solid catalyst and methyl propionate mixed liquid inside it.

[0018] 3. In the present invention, the solid catalyst accumulated inside the solid impurity filter cartridge falls into the bottom end of the solid separation tower body through the discharge circular opening, and the clean waste liquid is also stored at the bottom end of the solid separation tower body. At this time, the electric control valve is opened again to introduce the solid catalyst and the clean waste liquid into the methyl propionate recovery and extraction tank, and methyl propionate in the solid catalyst and the clean waste liquid is extracted, thereby improving the recovery rate of methyl propionate, and cleaning the solid catalyst for next use, thereby reducing the catalyst raw material cost of methyl propionate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a solid separation device for producing methyl propionate according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a solid separation tower body in a solid separation device for producing methyl propionate according to the present invention; Figure 3 This is a schematic diagram of the connection relationship between a solid impurity filter cartridge and a separation bin in a solid separation device for producing methyl propionate according to the present invention; Figure 4 This is a schematic diagram of the internal structure of a separation bin in a solid separation device for producing methyl propionate according to the present invention; Figure 5 This is a schematic diagram of the connection relationship between the separation bin and the lifting drive assembly in a solid separation device for producing methyl propionate according to the present invention; Figure 6 It is a schematic diagram of the connection relationship between the vertical lifting assembly and the filter screen washing mechanism in a solid separation device for producing methyl propionate of the present invention; Figure 7 The present invention is a schematic diagram of the three-dimensional structure of a filter screen flushing mechanism in a solid separation device for producing methyl propionate.

[0020] In the figure: 1. solid separation tower body; 2. solid separation mechanism; 21. solid impurity filter cartridge; 211. discharge round mouth; 212. No. 1 filter cartridge; 213. No. 2 filter cartridge; 22. separation bin; 221. separation circular tube; 222. support rod; 223. reinforcement rod; 224. mounting disc; 225. water outlet; 23. lifting drive assembly; 231. mounting base; 232. heavy-duty electric telescopic rod; 3. filter screen flushing mechanism; 31. No. 1 mounting disc; 32. water outlet pipe; 33. nozzle; 34. connecting rod; 4. vertical lifting assembly; 41. mounting frame; 42. drive plate; 43. No. 2 mounting rod; 44. No. 1 electric telescopic rod; 5. separation recovery assembly; 51. separation collection tank; 52. separation outlet pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1 - Figure 6 As shown: A solid separation device for producing methyl propionate, comprising a solid separation tower body 1, wherein a solid separation mechanism 2 and a filter screen flushing mechanism 3 are arranged inside the solid separation tower body 1, wherein the filter screen flushing mechanism 3 is arranged directly above the solid separation mechanism 2, wherein the solid separation mechanism 2 comprises a solid impurity filter cartridge 21, a separation bin 22 and a lifting drive assembly 23, wherein a discharge circular opening 211 is provided inside the solid impurity filter cartridge 21, wherein one end of the separation bin 22 movably penetrates inside the discharge circular opening 211, wherein the separation bin 22 comprises a separation circular tube 221, a support rod 222, a plurality of reinforcing rods 223 and a mounting disc 224, wherein a plurality of water outlet holes 225 are evenly arranged outside the separation circular tube 221, wherein one end of the support rod 222 is fixedly mounted on the separation disc 224. One end of the inner part of the circular tube 221, the other end of the support rod 222 is fixedly installed at the center of the mounting disc 224, one end of several reinforcing rods 223 is fixedly installed on the outside of the support rod 222, and the other end of several reinforcing rods 223 is fixedly installed on the inner side of the separation circular tube 221. The lifting drive assembly 23 includes a mounting base 231 and several heavy-duty electric telescopic rods 232. The driving ends of several heavy-duty electric telescopic rods 232 are fixedly installed below the mounting disc 224. The solid impurity filter cartridge 21 includes a No. 1 filter cartridge 212 and a No. 2 filter cartridge 213. One end of the No. 1 filter cartridge 212 is welded to one end of the No. 2 filter cartridge 213, and the inner diameter of one end of the No. 2 filter cartridge 213 is smaller than the inner diameter of one end of the No. 1 filter cartridge 212.

[0023] In this embodiment, a methyl propionate mixture containing a solid catalyst is introduced into the interior of the solid impurity filter cartridge 21, and the solid catalyst is filtered out by the solid impurity filter cartridge 21 and the separation bin 22, and is accumulated in the gap between the solid impurity filter cartridge 21 and the separation bin 22, and the filtered clear liquid flows into the lower end of the solid separation tower body 1 through the water outlet 225. At this time, the solid catalyst sinks to the bottom of the gap between the solid impurity filter cartridge 21 and the separation bin 22 under the action of gravity, and blocks the nearby water outlet 225. At this time, the heavy-duty electric telescopic rod 232 in the lifting drive assembly 23 drives the separation bin 22 to rise, and the blocked water outlet 225 of the separation bin 22 rises to the supernatant area of ​​the methyl propionate mixture. The supernatant is introduced into the lower end of the solid separation tower body 1 through the water outlet 225, so as to avoid the solid catalyst from clogging the filter holes, so that the solid impurity filter cartridge 21 and the separation bin 22 can continuously filter the methyl propionate mixture, thereby ensuring the continuity of the filtration process.

[0024] Embodiment 2: Figure 1 - Figure 7As shown, a solid separation device for producing methyl propionate comprises a solid separation tower body 1, wherein a solid separation mechanism 2 and a filter screen flushing mechanism 3 are arranged inside the solid separation tower body 1, wherein the filter screen flushing mechanism 3 is arranged directly above the solid separation mechanism 2, wherein the solid separation mechanism 2 comprises a solid impurity filter cartridge 21, a separation bin 22 and a lifting drive assembly 23, wherein a discharge circular opening 211 is provided inside the solid impurity filter cartridge 21, wherein one end of the separation bin 22 movably penetrates inside the discharge circular opening 211, wherein the separation bin 22 comprises a separation circular tube 221, a support rod 222, a plurality of reinforcing rods 223 and a mounting disc 224, wherein a plurality of water outlet holes 225 are evenly arranged on the outer side of the separation circular tube 221, wherein one end of the support rod 222 is fixedly mounted on one end inside the separation circular tube 221, wherein the other end of the support rod 222 is fixedly mounted on the center of the mounting disc 224, wherein one end of the plurality of reinforcing rods 223 is fixedly mounted on the outer side of the support rod 222, and the other end of the plurality of reinforcing rods 223 is fixedly mounted on the outer side of the separation circular tube 221, wherein the plurality of water outlet holes 225 are evenly arranged on the outer side of the separation circular tube 221, wherein the plurality of water outlet holes 225 are evenly mounted ... On the inner side of the pipe 221, the filter screen flushing mechanism 3 includes a No. 1 mounting plate 31, a water outlet pipe 32 and a plurality of nozzles 33. The outer side of the No. 1 mounting plate 31 is fixedly connected with a plurality of connecting rods 34 in a circular arrangement. The other ends of the plurality of connecting rods 34 are fixedly connected to the inner side of the water outlet pipe 32. The plurality of nozzles 33 are fixedly connected to the outer side of the water outlet pipe 32. One end of the filter screen flushing mechanism 3 is transmission-connected with a vertical lifting assembly 4. The vertical lifting assembly 4 includes a mounting frame 41, a driving plate 4 2. The No. 2 mounting rod 43 and the No. 1 electric telescopic rod 44, the mounting frame 41 is fixedly installed above the mounting base 231, the driving plate 42 is movably connected to the inside of the mounting frame 41, and the two groups of No. 1 electric telescopic rods 44 are symmetrically fixed to the inner side of the mounting frame 41, and the driving ends of the two groups of No. 1 electric telescopic rods 44 are fixedly installed on one side of the driving plate 42, and the No. 2 mounting rod 43 is fixedly installed in the middle of the other side of the driving plate 42, and one end of the No. 2 mounting rod 43 is fixedly installed in the middle of the filter flushing mechanism 3.

[0025] In this embodiment, when the filtration is completed, the lifting drive assembly 23 drives the separation bin 22 to descend and move out from the discharge circular opening 211, and the solid catalyst accumulated inside the solid impurity filter cartridge 21 falls into the bottom end of the solid separation tower body 1 through the discharge circular opening 211. The two groups of No. 1 electric telescopic rods 44 in the vertical lifting assembly 4 drive the driving plate 42 to descend, so that the filter flushing mechanism 3 falls into the interior of the solid impurity filter cartridge 21, and the water pump pumps the cleaning liquid into the interior of the outlet pipe 32, and sprays it from several nozzles 33 on the outside of the outlet pipe 32 to flush the inner wall of the solid impurity filter cartridge 21, and flushes the solid catalyst and methyl propionate liquid attached to the inner wall of the solid impurity filter cartridge 21 into the interior of the outlet pipe 32. At the same time, the cleaning liquid that flows down performs secondary flushing and soaking on the separation bin 22 to complete the clean cleaning operation of the solid separation mechanism 2.

[0026] Embodiment 3: According to Figure 1 - Figure 6 As shown, a solid separation device for producing methyl propionate comprises a solid separation tower body 1, wherein a solid separation mechanism 2 and a filter screen flushing mechanism 3 are arranged inside the solid separation tower body 1, wherein the filter screen flushing mechanism 3 is arranged directly above the solid separation mechanism 2, wherein the solid separation mechanism 2 comprises a solid impurity filter cartridge 21, a separation bin 22 and a lifting drive assembly 23, wherein a discharge circular opening 211 is provided inside the solid impurity filter cartridge 21, wherein one end of the separation bin 22 movably penetrates inside the discharge circular opening 211, wherein the separation bin 22 comprises a separation circular tube 221, a support rod 222, a plurality of reinforcing rods 223 and a mounting disc 224, wherein a plurality of water outlet holes 225 are evenly provided outside the separation circular tube 221, wherein one end of the support rod 222 is provided at a position where the water outlet holes 225 are provided. One end is fixedly mounted on the inside of the separation circular tube 221, the other end of the support rod 222 is fixedly mounted at the center of the mounting disc 224, one end of a plurality of reinforcing rods 223 is fixedly mounted on the outside of the support rod 222, the other end of a plurality of reinforcing rods 223 is fixedly mounted on the inside of the separation circular tube 221, a separation recovery component 5 is fixedly mounted inside the solid separation tower body 1, the separation recovery component 5 comprises a separation collecting tank 51 and a plurality of separation export pipes 52, one end of the plurality of separation export pipes 52 are respectively fixedly connected to the bottom end of the separation collecting tank 51, one end of the plurality of separation export pipes 52 are fixedly connected to an electric-controlled valve, and the inner wall of the separation collecting tank 51 is an arc surface.

[0027] In this embodiment, the filtered methyl propionate clear liquid flows into the separator collecting tank 51 in the separator recovery component 5, and the electric control valve is opened to introduce the clear liquid in the separator collecting tank 51 into the clear liquid collection tank; after the filtration is completed, the solid catalyst accumulated in the solid impurity filter cartridge 21 falls into the bottom of the solid separation tower body 1 through the discharge circular port 211, and the clean waste liquid is also stored at the bottom of the solid separation tower body 1. At this time, the electric control valve is opened again to introduce the solid catalyst and the clean waste liquid into the methyl propionate recovery and extraction tank, and methyl propionate in the solid catalyst and the clean waste liquid is extracted, thereby improving the recovery rate of methyl propionate, and cleaning the solid catalyst for next use, thereby reducing the catalyst raw material cost of methyl propionate.

[0028] Embodiment 4: A method for using a solid separation device for producing methyl propionate, comprising the following steps: S1, introducing the methyl propionate mixture containing the solid catalyst into the interior of the solid impurity filter cartridge 21, the solid catalyst is filtered out by the solid impurity filter cartridge 21 and the separation bin 22, and accumulates in the gap between the solid impurity filter cartridge 21 and the separation bin 22; S2, the lifting drive assembly 23 drives the separation chamber 22 to rise, the water outlet 225 on the separation chamber 22 rises, and the methyl propionate clear liquid located above the solid catalyst flows into the interior of the separation recovery assembly 5 through the water outlet 225, and the methyl propionate clear liquid is collected; S3. After the separation operation is completed, the lifting drive assembly 23 drives the separation bin 22 to descend and move out of the discharge circular opening 211, and the solid catalyst accumulated inside the solid impurity filter cartridge 21 falls into the interior of the solid separation tower body 1; S4, the filter screen flushing mechanism 3 flushes the inner side of the solid impurity filter cartridge 21 and the top of the separation bin 22, and the flushing liquid and the filtered solid catalyst are finally recovered uniformly from the inside of the separation recovery component 5.

[0029] The use method and working principle of the device are as follows: a methyl propionate mixture containing a solid catalyst is introduced into the interior of the solid impurity filter cartridge 21, the solid catalyst is filtered out by the solid impurity filter cartridge 21 and the separation bin 22, and accumulates in the gap between the solid impurity filter cartridge 21 and the separation bin 22, the filtered clear liquid flows into the lower end of the interior of the solid separation tower body 1 through the water outlet 225, at which time the solid catalyst sinks to the bottom of the gap between the solid impurity filter cartridge 21 and the separation bin 22 under the action of gravity, and blocks the nearby water outlet 225, At this time, the heavy-duty electric telescopic rod 232 in the lifting drive assembly 23 drives the separation bin 22 to rise, and the blocked water outlet 225 of the separation bin 22 rises to the supernatant area of ​​the methyl propionate mixture, and the supernatant is introduced into the lower end of the solid separation tower body 1 through the water outlet 225, and the electric control valve is opened to introduce the clear liquid in the separation collection tank 51 into the clear liquid collection tank; when the filtration is completed, the lifting drive assembly 23 drives the separation bin 22 to descend, and moves out from the discharge circular port 211, and accumulates on the solid impurity filter cartridge 21 The solid catalyst inside falls into the bottom of the solid separation tower body 1 through the discharge circular opening 211, and the two sets of No. 1 electric telescopic rods 44 in the vertical lifting assembly 4 drive the driving plate 42 to descend, so that the filter screen flushing mechanism 3 falls into the interior of the solid impurity filter cartridge 21, and the water pump pumps the cleaning liquid into the interior of the outlet pipe 32, and sprays it from the plurality of nozzles 33 outside the outlet pipe 32 to flush the inner wall of the solid impurity filter cartridge 21, and flushes the solid catalyst and methyl propionate liquid attached to the inner wall of the solid impurity filter cartridge 21 into the outlet water. The cleaning liquid flowing down inside the pipeline 32 performs secondary flushing and soaking of the separation bin 22, completing the clean cleaning operation of the solid separation mechanism 2, and the solid catalyst accumulated inside the solid impurity filter cartridge 21 falls into the bottom of the solid separation tower body 1 through the discharge circular port 211. At the same time, the cleaning waste liquid is also stored at the bottom of the solid separation tower body 1. At this time, the electric control valve is opened again to introduce the solid catalyst and the cleaning waste liquid into the methyl propionate recovery and extraction tank to extract the methyl propionate in the solid catalyst and the cleaning waste liquid.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid separation device for producing methyl propionate, characterized in that: The invention comprises a solid separation tower body (1), wherein a solid separation mechanism (2) and a filter screen flushing mechanism (3) are arranged inside the solid separation tower body (1), wherein the filter screen flushing mechanism (3) is arranged directly above the solid separation mechanism (2), wherein the solid separation mechanism (2) comprises a solid impurity filter cartridge (21), a separation bin (22) and a lifting drive assembly (23), wherein a discharge circular opening (211) is provided inside the solid impurity filter cartridge (21), wherein one end of the separation bin (22) movably penetrates inside the discharge circular opening (211), and wherein the separation bin (22) comprises a separation circular tube (221 ), a support rod (222), a plurality of reinforcing rods (223) and a mounting disc (224); a plurality of water outlet holes (225) are evenly arranged on the outside of the separation circular tube (221); one end of the support rod (222) is fixedly mounted on one end inside the separation circular tube (221); the other end of the support rod (222) is fixedly mounted at the center of the mounting disc (224); one end of a plurality of the reinforcing rods (223) is fixedly mounted on the outside of the support rod (222); and the other end of a plurality of the reinforcing rods (223) is fixedly mounted on the inside of the separation circular tube (221).

2. A solid separation device for producing methyl propionate according to claim 1, characterized in that: The lifting drive assembly (23) comprises a mounting base (231) and a plurality of heavy-duty electric telescopic rods (232), wherein the driving ends of the plurality of heavy-duty electric telescopic rods (232) are fixedly mounted below the mounting disc (224).

3. The solid separation equipment for producing methyl propionate according to claim 1, characterized in that: The solid impurity filter cartridge (21) comprises a first filter cartridge (212) and a second filter cartridge (213), one end of the first filter cartridge (212) and one end of the second filter cartridge (213) being welded to each other, and the inner diameter of one end of the second filter cartridge (213) is smaller than the inner diameter of one end of the first filter cartridge (212).

4. The solid separation device for producing methyl propionate according to claim 1, characterized in that: The filter screen flushing mechanism (3) comprises a first mounting plate (31), a water outlet pipe (32) and a plurality of nozzles (33); a plurality of connecting rods (34) are fixedly connected to the outside of the first mounting plate (31) in a circular arrangement; the other ends of the plurality of connecting rods (34) are fixedly connected to the inside of the water outlet pipe (32); and the plurality of nozzles (33) are fixedly connected to the outside of the water outlet pipe (32).

5. The solid separation equipment for producing methyl propionate according to claim 1, characterized in that: One end of the filter screen flushing mechanism (3) is drivingly connected to a vertical lifting assembly (4).

6. A solid separation device for producing methyl propionate according to claim 5, characterized in that: The vertical lifting assembly (4) comprises a mounting frame (41), a driving plate (42), a second mounting rod (43) and a first electric telescopic rod (44); the mounting frame (41) is fixedly mounted above the mounting base (231); the driving plate (42) is movably clamped inside the mounting frame (41); two groups of the first electric telescopic rods (44) are symmetrically fixed to the inner side of the mounting frame (41); the driving ends of the two groups of the first electric telescopic rods (44) are fixedly mounted on one side of the driving plate (42); the second mounting rod (43) is fixedly mounted in the middle of the other side of the driving plate (42); and one end of the second mounting rod (43) is fixedly mounted in the middle of the filter screen flushing mechanism (3).

7. The solid separation device for producing methyl propionate according to claim 6, characterized in that: A separation material recovery component (5) is fixedly installed inside the solid separation tower body (1).

8. The solid separation device for producing methyl propionate according to claim 7, characterized in that: The separation recovery assembly (5) comprises a separation collection tank (51) and a plurality of separation outlet pipes (52), one end of each of the plurality of separation outlet pipes (52) being fixedly connected to the bottom end of the separation collection tank (51), and one end of each of the plurality of separation outlet pipes (52) being fixedly connected to an electric control valve.

9. The solid separation device for producing methyl propionate according to claim 8, characterized in that: The inner wall of the separation collecting tank (51) is a curved surface.

10. A method for using a solid separation device for producing methyl propionate, using the solid separation device for producing methyl propionate according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, introducing a methyl propionate mixture containing a solid catalyst into the interior of a solid impurity filter cartridge (21), wherein the solid catalyst is filtered out by the solid impurity filter cartridge (21) and the separation bin (22), and accumulates in a gap between the solid impurity filter cartridge (21) and the separation bin (22); S2, the lifting drive assembly (23) drives the separation chamber (22) to rise, the water outlet hole (225) on the separation chamber (22) rises, and the methyl propionate clear liquid located above the solid catalyst flows into the interior of the separation recovery assembly (5) through the water outlet hole (225), and the methyl propionate clear liquid is collected; S3. After the separation operation is completed, the lifting drive assembly (23) drives the separation bin (22) to descend and move out of the discharge circular opening (211), and the solid catalyst accumulated inside the solid impurity filter cartridge (21) falls into the interior of the solid separation tower body (1); S4. The filter screen flushing mechanism (3) flushes the inner side of the solid impurity filter cartridge (21) and the top of the separation chamber (22), and the flushing liquid and the filtered solid catalyst are finally recovered from the inside of the separation recovery component (5).

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