Separation device for cis-1-chloro-3, 3, 3-trifluoropropene

Abstract

The utility model discloses a separation device for cis-1-chloro-3, 3, 3-trifluoropropene, which relates to the technical field of separation devices and comprises a reactor, a filter box, a first conveying tank, a second conveying tank, an exhaust tank, a gas storage tank, a crude product tank, a first distillation tower, a water pump and a clearing mechanism. According to the R1233zd (Z) separation production device, the removal mechanism is arranged, and the first material conveying tank, the exhaust tank, the gas storage tank, the first distillation tower, the intermediate tank, the second distillation tower, the finished product tank, the solvent tank, the water pump, the crude product tank, the filter box, the material guide pipe, the material guide frame and the second material conveying tank are matched with one another, so that R1233zd (Z) separation production can be realized; in the filtering process, the filtered solid salt can be automatically cleaned through the separation assembly, and meanwhile, the cleaning assembly is matched with the parts, so that the solid salt can be discharged into the storage box, the solid salt is stored in a concentrated manner, and the purpose of cleaning the solid salt without stopping the machine can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of separation devices, in particular to a separation device for cis-1-chloro-3,3,3-trifluoropropene. Background Art

[0002] In the process of preparing R1233zd (E) (i.e., trans-1-chloro-3,3,3-trifluoropropene), two by-products are produced: R244fa (i.e., 1,1,1,3-tetrafluoro-3-chloropropane, CAS: 149329-29-3) and R1233zd (Z) (i.e., cis-1-chloro-3,3,3-trifluoropropene, CAS: 99728-16-2). The mixture of R244fa and R1233zd (Z) forms an azeotropic or azeotropic-like component, which is difficult to purify, thereby reducing the raw material utilization rate and yield.

[0003] In order to purify R1233zd (Z) in the mixture of R244fa and R1233zd (Z), an alkali solution dissolved in an alcohol solvent (methanol or ethanol) is added to the mixture of byproducts R244fa and R1233zd (z), and the alkali selected is potassium hydroxide or sodium hydroxide. The alkali solution reacts with R244fa to obtain R1234ze. After exhausting, filtering salt and distilling to remove the alcohol solvent, R1233zd (Z) can be separated. In this process, the material discharged into the crude product tank needs to be filtered through a filter to screen out the solid salt contained in the material. However, long-term filtration will cause the solid salt to accumulate inside the filter and cause blockage. In order to achieve the purpose of cleaning the solid salt without stopping the machine, a separation device for cis-1-chloro-3,3,3-trifluoropropene is proposed. Utility Model Content

[0004] The utility model aims to provide a separation device for cis-1-chloro-3,3,3-trifluoropropene in order to achieve the purpose of cleaning solid salt without stopping the machine.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cis-1-chloro-3,3,3-trifluoropropene separation device, comprising a reactor, the bottom end of the reactor is fixedly connected to a filter box through a connecting pipe and a flange, the top of the reactor is symmetrically fixedly connected to a first feed tank and a second feed tank through a connecting pipe, the top of the reactor is fixedly connected to an exhaust tank through a connecting pipe, the exhaust tank is fixedly connected to a gas storage tank through a connecting pipe, the bottom end of the filter box is fixedly connected to a crude product tank through a connecting pipe and a flange, a first distillation tower is arranged on one side of the filter box, a water pump is arranged between the first distillation tower and the crude product tank, the water pump is fixedly connected to the crude product tank and the first distillation tower through a connecting pipe and a flange, a cleaning mechanism is arranged on the filter box, and the cleaning mechanism is used to clean up solid salt;

[0006] The cleaning mechanism includes: a separation component and a cleaning component; the separation component arranged on the filter box is used to scrape and separate the filtered solid salt; the cleaning component arranged on the filter box is used to clean the solid salt adhering to the separation component;

[0007] The separation component includes: a driving motor installed on the outer wall of one end of the filter box, two second transmission rollers are symmetrically arranged inside the filter box, the two second transmission rollers are rotatably connected to the filter box through a rotating shaft, one of the second transmission rollers is fixedly connected to the output end of the driving motor, and two synchronous belts are symmetrically arranged inside the filter box, the two synchronous belts are respectively sleeved on the outer walls at both ends of the two second transmission rollers, and a plurality of scraper plates are fixedly connected circumferentially equidistantly between the two synchronous belts.

[0008] As a further solution of the utility model: the cleaning assembly includes: a first gear interference-fitted on one end of another second transmission roller, the first gear is located outside one end of the filter box, the outer wall of the first gear is meshingly connected with the second gear, one end of the second gear is provided with a first transmission roller located inside the filter box, the first transmission roller is rotatably connected to the filter box through a rotating shaft, and the second gear is interference-fitted on one end of the first transmission roller.

[0009] As a further solution of the utility model: a second distillation tower is arranged on the side of the first distillation tower away from the filter box, a solvent tank is arranged below the first distillation tower and the second distillation tower, and an intermediate tank located between the first distillation tower and the second distillation tower is arranged above the solvent tank.

[0010] As a further solution of the utility model: the intermediate tank and the solvent tank are fixedly connected to the first distillation tower and the second distillation tower through connecting pipes and flanges, and the second distillation tower is fixedly connected to the finished product tank through connecting pipes and flanges.

[0011] As a further solution of the utility model: one side of the bottom end of the filter box is fixedly connected to a material guide frame located below the first transmission roller, the bottom end of the material guide frame is fixedly connected to a material guide pipe, the end of the material guide pipe away from the material guide frame is fixedly connected to the storage box, and the inner cavity of the material guide frame is respectively connected to the inner cavity of the filter box and the material guide pipe.

[0012] As a further solution of the utility model: a filter plate is fixedly connected to the inside of the filter box, and the filter plate is located between the two second transmission rollers and contacts the inner walls of the two synchronous belts and the outer walls of multiple scraper plates, and one side outer wall of the multiple scraper plates is inclined.

[0013] As a further solution of the utility model: a plurality of groups of brushes are fixedly connected to the outer wall of the first transmission roller at equal intervals in the transverse direction, a group of brushes is provided with a plurality of brushes, and the plurality of brushes are fixedly connected to the outer wall of the first transmission roller at equal intervals in the circumferential direction.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting a cleaning mechanism, through the cooperation of the first feed tank, the exhaust tank, the gas storage tank, the first distillation tower, the intermediate tank, the second distillation tower, the finished product tank, the solvent tank, the water pump, the crude product tank, the filter box, the guide pipe, the guide frame, and the second feed tank, the separation production of R1233zd (Z) can be realized. During the filtering process, the driving motor is started to drive a second transmission roller to rotate. At this time, a second transmission roller drives another second transmission roller to rotate synchronously through two synchronous belts. At the same time, multiple scraping plates can scrape the upper surface of the filter plate driven by the two synchronous belts, so that the filtered solid salt can be automatically cleaned. , and the solid salt is driven by multiple scraper plates to move to the top of the material guide frame. During this process, the first gear is driven by another second transmission roller to drive the second gear to rotate through meshing. At this time, the first transmission roller is driven by the second gear to clean the outer walls of the synchronous belt and the scraper plates through multiple brushes, so that the solid salt can be cleaned into the inner cavity of the material guide frame and effectively prevent some solid salt from adhering to the outer walls of the synchronous belt and the scraper plates. After that, the solid salt in the inner cavity of the material guide frame can be discharged into the storage box through the material guide pipe, so as to realize the centralized storage of the solid salt, thereby achieving the purpose of cleaning the solid salt without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the filter box and the cleaning mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter box of the utility model;

[0019] Figure 4 It is a schematic diagram of the explosion structure of the cleaning mechanism of the utility model.

[0020] In the figure: 1. reactor; 2. cleaning mechanism; 201. drive motor; 202. first gear; 203. second gear; 204. brush; 205. first transmission roller; 206. second transmission roller; 207. scraper plate; 208. filter plate; 209. timing belt; 3. first feed tank; 4. exhaust tank; 5. gas storage tank; 6. first distillation tower; 7. intermediate tank; 8. second distillation tower; 9. finished product tank; 10. solvent tank; 11. water pump; 12. crude product tank; 13. filter box; 14. guide pipe; 15. guide frame; 16. second feed tank. DETAILED DESCRIPTION

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

[0022] See also Figure 1 to Figure 4 In the embodiment of the utility model, a separation device of cis-1-chloro-3,3,3-trifluoropropene includes a reactor 1, the bottom end of the reactor 1 is fixedly connected to a filter box 13 through a connecting pipe and a flange, the top of the reactor 1 is symmetrically fixedly connected to a first feed tank 3 and a second feed tank 16 through a connecting pipe, the top of the reactor 1 is fixedly connected to an exhaust tank 4 through a connecting pipe, the exhaust tank 4 is fixedly connected to a gas storage tank 5 through a connecting pipe, the bottom end of the filter box 13 is fixedly connected to a crude product tank 12 through a connecting pipe and a flange, a first distillation tower 6 is arranged on one side of the filter box 13, a water pump 11 is arranged between the first distillation tower 6 and the crude product tank 12, and a water pump 11 is arranged between the first distillation tower 6 and the crude product tank 12. The pump 11 is fixedly connected to the crude product tank 12 and the first distillation tower 6 through connecting pipes and flanges respectively. A second distillation tower 8 is arranged on the side of the first distillation tower 6 away from the filter box 13. A solvent tank 10 is arranged below the first distillation tower 6 and the second distillation tower 8. An intermediate tank 7 located between the first distillation tower 6 and the second distillation tower 8 is arranged above the solvent tank 10. The intermediate tank 7 and the solvent tank 10 are fixedly connected to the first distillation tower 6 and the second distillation tower 8 through connecting pipes and flanges. A finished product tank 9 is fixedly connected to the second distillation tower 8 through connecting pipes and flanges. A cleaning mechanism 2 is arranged on the filter box 13, and the cleaning mechanism 2 is used to clean solid salt.

[0023] The cleaning mechanism 2 includes: a separation component and a cleaning component; the separation component arranged on the filter box 13 is used to scrape and separate the filtered solid salt; the cleaning component arranged on the filter box 13 is used to clean the solid salt adhering to the separation component.

[0024] The separation component includes: a driving motor 201 installed on the outer wall of one end of the filter box 13, two second transmission rollers 206 are symmetrically arranged inside the filter box 13, the two second transmission rollers 206 are rotatably connected to the filter box 13 through a rotating shaft, and one second transmission roller 206 is fixedly connected to the output end of the driving motor 201; two synchronous belts 209 are symmetrically arranged inside the filter box 13, and the two synchronous belts 209 are respectively sleeved on the outer walls of the two ends of the two second transmission rollers 206, and a plurality of scraper plates 207 are fixedly connected between the two synchronous belts 209 at equidistant intervals in the circumferential direction; a filter plate 208 is fixedly connected inside the filter box 13, and the filter plate 208 is located between the two second transmission rollers 206, and contacts with the inner walls of the two synchronous belts 209 and the outer walls of the plurality of scraper plates 207, and one side outer wall of the plurality of scraper plates 207 is in the shape of an inclined surface.

[0025] The cleaning assembly includes: a first gear 202 which is interference fitted at one end of another second transmission roller 206, the first gear 202 is located outside one end of the filter box 13, the outer wall of the first gear 202 is meshedly connected with the second gear 203, one end of the second gear 203 is provided with a first transmission roller 205 which is located inside the filter box 13, the first transmission roller 205 is rotatably connected to the filter box 13 through a rotating shaft, and the second gear 203 is interference fitted at one end of the first transmission roller 205.

[0026] In this embodiment, it is particularly noted that the first feed tank 3 is a container for placing a mixture of R244fa and R1233zd(Z), the second feed tank 16 is a container for placing an alkaline solution such as potassium hydroxide or sodium hydroxide, a servo motor is installed at the top of the reactor 1, and a stirring rod for repeatedly stirring the material is fixedly connected to the output end of the servo motor, and an electric valve is installed at the opening at the bottom end of the inner wall of the reactor 1, and the electric valve is electrically connected to an external controller through a wire.

[0027] When the device is used, the materials in the first feed tank 3 and the second feed tank 16 are transported to the inner cavity of the reactor 1 through the connecting pipe, and the servo motor is started to drive the stirring rod to repeatedly stir the materials. In this process, the alkaline solution reacts with the mixture to obtain gaseous R1234ze. At this time, the gaseous R1234ze is guided to the inner cavity of the gas storage tank 5 through the exhaust tank 4, so as to store the gaseous R1234ze.

[0028] After the alkaline solution and the mixture react repeatedly, the electric valve is opened by the external controller to allow the material to enter the inner cavity of the filter box 13 for filtration. At this time, the solid salt in the material can be filtered through the filter plate 208, and then the filter box 13 guides the filtered material to the inner cavity of the crude product tank 12, and then the water pump 11 can transport the material to the inner cavity of the first distillation tower 6 for distillation operation. At the same time, the first distillation tower 6 discharges the distilled material into the inner cavity of the second distillation tower 8 through the intermediate tank 7 for secondary distillation. In this process, the first distillation tower 6 and the second distillation tower 8 transport the alcohol solvent after distillation of the material to the inner cavity of the solvent tank 10 for storage, and then the R1233zdz after secondary distillation is transported to the inner cavity of the finished product tank 9, thereby realizing the separation and production of R1233zdz.

[0029] During the filtering process of the reacted material, the driving motor 201 is started to drive a second transmission roller 206 to rotate. At this time, a second transmission roller 206 drives another second transmission roller 206 to rotate synchronously through two synchronous belts 209. At the same time, a plurality of scraper plates 207 driven by the two synchronous belts 209 can scrape the upper surface of the filter plate 208, so that the filtered solid salt can be automatically cleaned. The solid salt is driven by the plurality of scraper plates 207 to move to the top of the guide frame 15. In this process, the first gear 202 is on the other second transmission roller 2 06, the second gear 203 is driven to rotate through meshing. At this time, the first transmission roller 205, driven by the second gear 203, cleans the outer walls of the synchronous belt 209 and the scraper plate 207 through multiple brushes 204, so that the solid salt can be cleaned into the inner cavity of the guide frame 15, and part of the solid salt can be effectively prevented from adhering to the outer walls of the synchronous belt 209 and the scraper plate 207. After that, the solid salt in the inner cavity of the guide frame 15 can be discharged into the storage box through the guide pipe 14, so as to realize the centralized storage of the solid salt, thereby achieving the purpose of cleaning the solid salt without stopping the machine.

[0030] Please refer to Figure 2 to Figure 4 One side of the bottom end of the filter box 13 is fixedly connected to a material guide frame 15 located below the first transmission roller 205, and the bottom end of the material guide frame 15 is fixedly connected to a material guide pipe 14, and one end of the material guide pipe 14 away from the material guide frame 15 is fixedly connected to the storage box, and the inner cavity of the material guide frame 15 is respectively connected to the inner cavity of the filter box 13 and the material guide pipe 14 and the storage box.

[0031] In this embodiment, the cleaned solid salt can be discharged into the interior of the storage box through the cooperation between the material guide tube 14 and the material guide frame 15, so as to realize the automatic storage of the solid salt.

[0032] Please refer to Figure 2 to Figure 4The outer wall of the first transmission roller 205 is laterally and equidistantly fixedly connected with a plurality of groups of brushes 204 , and a group of brushes 204 is provided with a plurality of brushes 204 circumferentially and equidistantly fixedly connected with the outer wall of the first transmission roller 205 .

[0033] In this embodiment, the brush 204 can be used to clean the solid salt remaining on the outer wall of the synchronous belt 209 and the scraper plate 207, thereby effectively avoiding the residual solid salt.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for separating cis-1-chloro-3,3,3-trifluoropropene, comprising a reactor (1), wherein the bottom end of the reactor (1) is fixedly connected to a filter box (13) via a connecting pipe and a flange, the top end of the reactor (1) is symmetrically fixedly connected to a first feed tank (3) and a second feed tank (16) via a connecting pipe, the top end of the reactor (1) is fixedly connected to an exhaust tank (4) via a connecting pipe, the exhaust tank (4) is fixedly connected to an air storage tank (5) via a connecting pipe, the bottom end of the filter box (13) is fixedly connected to a crude product tank (12) via a connecting pipe and a flange, a first distillation tower (6) is arranged on one side of the filter box (13), a water pump (11) is arranged between the first distillation tower (6) and the crude product tank (12), the water pump (11) is fixedly connected to the crude product tank (12) and the first distillation tower (6) via a connecting pipe and a flange, and the water pump (11) is fixedly connected to the crude product tank (12) and the first distillation tower (6) via a connecting pipe and a flange, respectively, wherein: The filter box (13) is provided with a cleaning mechanism (2), and the cleaning mechanism (2) is used to clean the solid salt; The cleaning mechanism (2) comprises: a separation component and a cleaning component; the separation component arranged on the filter box (13) is used to scrape and separate the filtered solid salt; the cleaning component arranged on the filter box (13) is used to clean the solid salt adhering to the separation component; The separation component comprises: a driving motor (201) mounted on the outer wall of one end of the filter box (13); two second transmission rollers (206) are symmetrically arranged inside the filter box (13); the two second transmission rollers (206) are rotatably connected to the filter box (13) via a rotating shaft; one of the second transmission rollers (206) is fixedly connected to the output end of the driving motor (201); two synchronous belts (209) are symmetrically arranged inside the filter box (13); the two synchronous belts (209) are respectively sleeved on the outer walls of both ends of the two second transmission rollers (206); and a plurality of scraping plates (207) are fixedly connected between the two synchronous belts (209) at equal intervals in the circumferential direction.

2. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 1, characterized in that: The cleaning assembly comprises: a first gear (202) interference-fitted on one end of another second transmission roller (206); the first gear (202) is located outside one end of the filter box (13); the outer wall of the first gear (202) is meshingly connected with a second gear (203); one end of the second gear (203) is provided with a first transmission roller (205) located inside the filter box (13); the first transmission roller (205) is rotationally connected to the filter box (13) via a rotating shaft; and the second gear (203) is interference-fitted on one end of the first transmission roller (205).

3. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 1, characterized in that: A second distillation tower (8) is arranged on a side of the first distillation tower (6) away from the filter box (13); a solvent tank (10) is arranged below the first distillation tower (6) and the second distillation tower (8); and an intermediate tank (7) located between the first distillation tower (6) and the second distillation tower (8) is arranged above the solvent tank (10).

4. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 3, characterized in that: The intermediate tank (7) and the solvent tank (10) are fixedly connected to the first distillation tower (6) and the second distillation tower (8) via connecting pipes and flanges, and the second distillation tower (8) is fixedly connected to a finished product tank (9) via a connecting pipe and a flange.

5. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 2, characterized in that: A material guide frame (15) located below the first transmission roller (205) is fixedly connected to one side of the bottom end of the filter box (13); a material guide pipe (14) is fixedly connected to the bottom end of the material guide frame (15); an end of the material guide pipe (14) away from the material guide frame (15) is fixedly connected to the storage box; the inner cavity of the material guide frame (15) is respectively connected to the inner cavity of the filter box (13) and the inner cavity of the material guide pipe (14).

6. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 1, characterized in that: A filter plate (208) is fixedly connected to the interior of the filter box (13); the filter plate (208) is located between the two second transmission rollers (206) and is in contact with the inner walls of the two synchronous belts (209) and the outer walls of a plurality of scraper plates (207); one side outer wall of the plurality of scraper plates (207) is in the shape of an inclined surface.

7. A separation device for cis-1-chloro-3,3,3-trifluoropropene according to claim 2, characterized in that: The outer wall of the first transmission roller (205) is fixedly connected to multiple groups of brushes (204) at equal intervals in the transverse direction, one group of brushes (204) is provided with multiple brushes, and the multiple brushes (204) are fixedly connected to the outer wall of the first transmission roller (205) at equal intervals in the circumferential direction.

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