Furfural multi-effect reaction rectification device

Abstract

The utility model relates to the technical field of rectification devices, and provides a furfural multi-effect reaction rectification device which comprises supporting legs, a rectification tower is fixedly mounted at the top ends of the supporting legs, and a water storage tank is fixedly mounted at the left end of the rectification tower; the scraping mechanism is arranged in the rectifying tower; the driving mechanism is arranged at the top end of the rectifying tower; the scraping mechanism comprises a limiting ring, the limiting ring is fixedly connected to the top end of the interior of the rectifying tower in a sleeving mode, the outer surface of the limiting ring is movably connected with a driven gear in a sleeving mode, the outer surface of the driven gear is movably connected with the inner surface of the rectifying tower in a sleeving mode, and scraping plates are fixedly installed on the left side and the right side of the bottom end of the driven gear correspondingly. The number of the scrapers is two, and the opposite faces of the two scrapers are movably connected with the inner surface of the rectifying tower. According to the technical scheme, the problem that furfural is easily left on the inner wall in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation devices, and specifically relates to a furfural multi-effect reaction distillation device. Background Art

[0002] Furfural is an organic compound, a colorless, transparent, oily liquid with a special smell similar to benzaldehyde. It is mainly used as an industrial solvent and can also be used to prepare furfuryl alcohol, furoic acid, tetrahydrofuran, γ-valerolactone, pyrrole, tetrahydropyrrole, etc. When storing, the warehouse should be kept ventilated, low temperature and dry, and it should be stored separately from oxidants, acids, alkalis and food additives.

[0003] Furfural usually needs to go through the steps of mixing, hydrolysis, distillation and neutralization to be prepared, and distillation requires the use of corresponding distillation equipment. However, the existing distillation equipment is limited by structure and design. In actual use, since the prepared furfural is liquid, furfural raw materials will remain on the inner wall of the distillation equipment during the preparation process, and there is no scraping mechanism inside the distillation equipment. Therefore, the residual furfural will reduce the concentration of the prepared furfural raw material, thereby increasing the loss of furfural and causing waste of resources. Therefore, improvements are needed. Utility Model Content

[0004] The utility model provides a furfural multi-effect reaction distillation device, which solves the problem of furfural residue on the inner wall in the related technology.

[0005] The technical solution of the utility model is as follows: a furfural multi-effect reaction distillation device, comprising:

[0006] A supporting leg, a distillation tower is fixedly installed on the top of the supporting leg, and a water storage tank is fixedly installed on the left end of the distillation tower;

[0007] A scraping mechanism, wherein the scraping mechanism is arranged inside the distillation tower;

[0008] A driving mechanism, wherein the driving mechanism is arranged at the top of the distillation tower;

[0009] Among them, the scraping mechanism includes a limiting ring, which is fixedly sleeved on the top of the inside of the distillation tower, and the outer surface of the limiting ring is movably sleeved with a driven gear, and the outer surface of the driven gear is movably sleeved with the inner surface of the distillation tower, and scrapers are fixedly installed on the left and right sides of the bottom end of the driven gear respectively. The number of scrapers is two, and the opposite back surfaces of the two scrapers are movably connected to the inner surface of the distillation tower. The inside of the two scrapers is movably sleeved with a circular ring, and the outer surface of the circular ring is fixedly sleeved with the inner surface of the distillation tower. A square hole is opened inside the circular ring, and the driven gear will cause the scraper to rotate.

[0010] As a preferred technical solution of the utility model, the driving mechanism includes:

[0011] A driving motor, wherein the driving motor is fixedly mounted on the left side of the top of the distillation tower, the other end of the output shaft of the driving motor is fixedly sleeved with a driving shaft, and the bottom end of the driving shaft penetrates the distillation tower and extends to the inside of the distillation tower;

[0012] A driving gear is fixedly sleeved on the bottom end of the outer surface of the driving shaft, and the outer surface of the driving gear is meshed with the inner surface of the driven gear.

[0013] As a preferred technical solution of the utility model, a power motor is fixedly installed in the middle of the top of the distillation tower, and the other end of the output shaft of the power motor is fixedly sleeved with a rotating shaft. The bottom end of the rotating shaft passes through the distillation tower and extends to the interior of the distillation tower, and the outer surface of the rotating shaft is fixedly sleeved with a mixing disc.

[0014] As a preferred technical solution of the utility model, the top of the outer surface of the rotating shaft is movably connected with a vertical pipe, the top of the vertical pipe is fixedly connected to the top of the inside of the distillation tower, the bottom of the outer surface of the vertical pipe is movably connected with a horizontal pipe, the inner surface of the bottom end of the horizontal pipe is fixedly connected to the outer surface of the rotating shaft, the outer surface of the horizontal pipe is fixedly connected with a nozzle, and the horizontal pipe will rotate with the rotating shaft.

[0015] As a preferred technical solution of the utility model, a water pump is fixedly installed on the top of the water tank, a water suction pipe is fixedly installed on the right end of the water pump, the other end of the water suction pipe passes through the water tank and extends to the interior of the water tank, a water outlet pipe is fixedly installed on the top of the water pump, the other end of the water outlet pipe passes through the distillation tower and the vertical pipe and extends to the interior of the vertical pipe, and a water inlet pipe is fixedly sleeved on the top of the left end of the water tank.

[0016] As a preferred technical solution of the utility model, a steam reboiler is fixedly installed on the left side of the bottom end of the water storage tank, a steam inlet pipe is fixedly installed on the right end of the steam reboiler, the other end of the steam inlet pipe passes through the distillation tower and extends to the interior of the distillation tower, a liquid inlet pipe is fixedly sleeved on the top of the right end of the distillation tower, a liquid inlet valve is fixedly installed on the right end of the liquid inlet pipe, a drain pipe is fixedly sleeved on the bottom end of the distillation tower, and a drain valve is fixedly installed on the bottom end of the drain pipe.

[0017] As an optimal technical solution of the utility model, a steam exhaust pipe is fixedly sleeved on the right side of the top of the distillation tower, a condenser is fixedly installed on the other end of the steam exhaust pipe, a reflux pipe is fixedly installed on the bottom end of the condenser, and the other end of the reflux pipe is fixedly sleeved on the inner surface of the top of the liquid inlet pipe.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model is provided with a limit ring, a driven gear, a scraper, a driving motor and a driving gear. When the driving motor is started, the driving shaft will drive the driving gear to rotate. Since the outer surface of the driving gear and the inner surface of the driven gear are meshed and connected, the driven gear will rotate along the outer surface of the limit ring with the scraper under the action of the driving gear, thereby scraping the residual raw materials on the inner wall of the distillation tower, so as to realize the cleaning of the residual raw materials on the inner wall of the distillation tower, thereby preventing the residual raw materials from causing waste of furfural raw materials and reducing the concentration, and reducing the loss of furfural.

[0020] 2. The utility model is provided with a rotating shaft, a vertical pipe, a horizontal pipe, a nozzle and a water pump. When the power motor is started, the rotating shaft will rotate, and the horizontal pipe will rotate along the inner surface of the vertical pipe. When the water pump is started, the water inside the water tank will enter the water pump from the suction pipe and then be input into the vertical pipe and the horizontal pipe through the outlet pipe, and finally be sprayed out from the nozzle. In this way, the inner wall of the distillation tower can be evenly cleaned, thereby improving the cleaning efficiency of the distillation tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a cross-sectional structural schematic diagram of the front side of the utility model;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of the side of the utility model;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the top of the utility model;

[0026] Figure 5 It is a schematic cross-sectional structure diagram of the limit ring of the utility model;

[0027] Figure 6 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0028] Figure 7 for Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0029] In the figure: 1. supporting leg; 2. distillation tower; 3. water storage tank; 4. scraping mechanism; 401. limiting ring; 402. driven gear; 403. scraper; 404. circular ring; 405. square hole; 5. driving mechanism; 501. driving motor; 502. driving shaft; 503. driving gear; 6. power motor; 7. rotating shaft; 8. mixing disc; 9. vertical pipe; 10. horizontal pipe; 11. nozzle; 12. water pump; 13. water suction pipe; 14. water outlet pipe; 15. water inlet pipe; 16. steam reboiler; 17. steam inlet pipe; 18. liquid inlet pipe; 19. liquid inlet valve; 20. liquid discharge pipe; 21. liquid discharge valve; 22. steam discharge pipe; 23. condenser; 24. reflux pipe. DETAILED DESCRIPTION

[0030] The following will be combined with 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 of 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.

[0031] like Figures 1 to 7 As shown, the utility model provides a furfural multi-effect reaction distillation device, comprising:

[0032] Support leg 1, a distillation tower 2 is fixedly installed on the top of the support leg 1, and a water storage tank 3 is fixedly installed on the left end of the distillation tower 2;

[0033] A scraping mechanism 4, wherein the scraping mechanism 4 is arranged inside the distillation tower 2;

[0034] A driving mechanism 5, which is arranged at the top of the distillation tower 2;

[0035] Among them, the scraping mechanism 4 includes a limiting ring 401, which is fixedly sleeved on the top of the inside of the distillation tower 2, and the outer surface of the limiting ring 401 is movably sleeved with a driven gear 402, and the outer surface of the driven gear 402 is movably sleeved with the inner surface of the distillation tower 2, and scrapers 403 are fixedly installed on the left and right sides of the bottom of the driven gear 402. There are two scrapers 403, and the opposite back surfaces of the two scrapers 403 are movably connected to the inner surface of the distillation tower 2. The inside of the two scrapers 403 is movably sleeved with a circular ring 404, and the outer surface of the circular ring 404 is fixedly sleeved with the inner surface of the distillation tower 2. A square hole 405 is opened inside the circular ring 404, and the driven gear 402 will cause the scraper 403 to rotate.

[0036] When the driven gear 402 rotates, since the driven gear 402 and the scraper 403 are fixedly connected, the scraper 403 will rotate along with the driven gear 402. The existence of the limit ring 401 and the circular ring 404 can limit the rotation of the driven gear 402 and the scraper 403 respectively. With the rotation of the scraper 403, the residual raw material on the inner wall of the distillation tower 2 can be scraped off. At the same time, the square hole 405 opened inside the circular ring 404 will prevent the circular ring 404 from hindering the falling of the raw material scraped by the scraper 403. The mutual cooperation of various mechanisms can realize the cleaning of the residual raw material on the inner wall of the distillation tower 2, thereby reducing the loss of furfural and saving costs.

[0037] Wherein, the driving mechanism 5 comprises:

[0038] A driving motor 501 is fixedly mounted on the left side of the top of the distillation tower 2. The other end of the output shaft of the driving motor 501 is fixedly sleeved with a driving shaft 502. The bottom end of the driving shaft 502 penetrates the distillation tower 2 and extends to the inside of the distillation tower 2.

[0039] The driving gear 503 is fixedly sleeved on the bottom end of the outer surface of the driving shaft 502 , and the outer surface of the driving gear 503 is meshedly connected with the inner surface of the driven gear 402 .

[0040] When the driving motor 501 is started, the driving shaft 502 drives the driving gear 503 to rotate, thereby causing the driven gear 402 meshing with the driving gear 503 to rotate.

[0041] Among them, a power motor 6 is fixedly installed in the middle of the top of the distillation tower 2, and a rotating shaft 7 is fixedly sleeved on the other end of the output shaft of the power motor 6. The bottom end of the rotating shaft 7 passes through the distillation tower 2 and extends to the interior of the distillation tower 2. A mixing disc 8 is fixedly sleeved on the outer surface of the rotating shaft 7.

[0042] When the power motor 6 is started, the rotating shaft 7 will drive the mixing disc 8 to rotate.

[0043] Among them, the top of the outer surface of the rotating shaft 7 is movably connected with a vertical pipe 9, the top of the vertical pipe 9 is fixedly connected to the top of the inside of the distillation tower 2, the bottom of the outer surface of the vertical pipe 9 is movably connected with a horizontal pipe 10, the inner surface of the bottom end of the horizontal pipe 10 is fixedly connected to the outer surface of the rotating shaft 7, the outer surface of the horizontal pipe 10 is fixedly connected with a nozzle 11, and the horizontal pipe 10 will rotate with the rotating shaft 7.

[0044] When the rotating shaft 7 rotates, the horizontal tube 10 will rotate along the outer surface of the vertical tube 9 .

[0045] Among them, a water pump 12 is fixedly installed on the top of the water tank 3, a water suction pipe 13 is fixedly installed on the right end of the water pump 12, the other end of the water suction pipe 13 penetrates the water tank 3 and extends to the inside of the water tank 3, a water outlet pipe 14 is fixedly installed on the top of the water pump 12, the other end of the water outlet pipe 14 penetrates the distillation tower 2 and the vertical pipe 9 and extends to the inside of the vertical pipe 9, and a water inlet pipe 15 is fixedly sleeved on the top of the left end of the water tank 3.

[0046] When the water pump 12 is started, the water inside the water tank 3 will enter the water pump 12 from the water suction pipe 13 and then enter the vertical pipe 9 from the water outlet pipe 14. The existence of the water inlet pipe 15 makes it convenient to replenish the water inside the water tank 3.

[0047] Among them, a steam reboiler 16 is fixedly installed on the left side of the bottom end of the water storage tank 3, a steam inlet pipe 17 is fixedly installed on the right end of the steam reboiler 16, the other end of the steam inlet pipe 17 passes through the distillation tower 2 and extends to the interior of the distillation tower 2, a liquid inlet pipe 18 is fixedly sleeved on the top of the right end of the distillation tower 2, a liquid inlet valve 19 is fixedly installed on the right end of the liquid inlet pipe 18, a drain pipe 20 is fixedly sleeved on the bottom end of the distillation tower 2, and a drain valve 21 is fixedly installed on the bottom end of the drain pipe 20.

[0048] Due to the existence of the steam reboiler 16, secondary heating of the steam is achieved.

[0049] Among them, a steam exhaust pipe 22 is fixedly sleeved on the right side of the top of the distillation tower 2, a condenser 23 is fixedly installed on the other end of the steam exhaust pipe 22, a reflux pipe 24 is fixedly installed on the bottom end of the condenser 23, and the other end of the reflux pipe 24 is fixedly sleeved on the inner surface of the top of the liquid inlet pipe 18.

[0050] Due to the existence of the condenser 23, condensation and reflux of the steam are achieved.

[0051] The working principle and use process of this utility model:

[0052] First, the operator starts the power motor 6, so that the rotating shaft 7 drives the mixing disc 8 to rotate, and then opens the liquid inlet valve 19 to input the prepared raw materials into the distillation tower 2 through the liquid inlet pipe 18, and inputs high-temperature steam into the distillation tower 2 through the steam reboiler 16 and the steam inlet pipe 17. With the cooperation of the condenser 23 and the mixing disc 8, a high concentration of furfural can be obtained. At the same time, the operator starts the driving motor 501, so that the driving shaft 502 drives the driving gear 503 to rotate, so that the driving gear The driven gear 402 meshingly connected with 503 rotates along the outer surface of the limit ring 401, and the scraper 403 will rotate along the inner surface of the distillation tower 2 together with the driven gear 402, thereby scraping off the residual raw materials on the inner wall of the distillation tower 2, and finally opening the drain valve 21 to discharge the high-concentration furfural raw materials. The mutual cooperation of various mechanisms realizes the cleaning of the residual raw materials on the inner wall of the distillation tower 2, thereby preventing the raw materials from adhering to the inner wall of the distillation tower 2 and causing a decrease in the concentration of the furfural raw materials, thereby reducing the loss of furfural.

[0053] When the distillation tower 2 is used up, the operator restarts the power motor 6 so that the rotating shaft 7 drives the horizontal tube 10 and the nozzle 11 to rotate, and starts the water pump 12 at the same time, so that the water inside the water tank 3 is input into the vertical pipe 9 through the suction pipe 13 and the outlet pipe 14, and then input into the inside of the horizontal tube 10 from the vertical pipe 9. At this time, the water in the horizontal tube 10 will be sprayed out from the nozzle 11, so that the distillation tower 2 is evenly cleaned with the rotation of the horizontal tube 10 and the nozzle 11, so as to improve the cleaning efficiency inside the distillation tower 2, thereby preventing the residual raw materials from affecting the next use.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 furfural multiple-effect reaction distillation device, characterized in that: Included are: A supporting leg (1), a distillation tower (2) being fixedly mounted on the top end of the supporting leg (1), and a water storage tank (3) being fixedly mounted on the left end of the distillation tower (2); A scraping mechanism (4), wherein the scraping mechanism (4) is arranged inside the distillation tower (2); A driving mechanism (5), wherein the driving mechanism (5) is arranged at the top of the distillation tower (2); The scraping mechanism (4) comprises a limit ring (401), the limit ring (401) is fixedly sleeved on the top of the interior of the distillation tower (2), the outer surface of the limit ring (401) is movably sleeved with a driven gear (402), the outer surface of the driven gear (402) is movably sleeved with the inner surface of the distillation tower (2), and scrapers (403) are fixedly installed on the left and right sides of the bottom of the driven gear (402), the number of the scrapers (403) is two, the opposite surfaces of the two scrapers (403) are movably connected to the inner surface of the distillation tower (2), the inside of the two scrapers (403) are movably sleeved with a circular ring (404), the outer surface of the circular ring (404) is fixedly sleeved with the inner surface of the distillation tower (2), the inside of the circular ring (404) is provided with a square hole (405), and the driven gear (402) causes the scraper (403) to rotate.

2. A furfural multiple-effect reaction distillation device according to claim 1, characterized in that: The driving mechanism (5) comprises: A driving motor (501), the driving motor (501) being fixedly mounted on the left side of the top end of the distillation tower (2), the other end of the output shaft of the driving motor (501) being fixedly sleeved with a driving shaft (502), the bottom end of the driving shaft (502) passing through the distillation tower (2) and extending into the interior of the distillation tower (2); A driving gear (503) is fixedly sleeved on the bottom end of the outer surface of the driving shaft (502), and the outer surface of the driving gear (503) is meshingly connected with the inner surface of the driven gear (402).

3. A furfural multiple-effect reaction distillation device according to claim 1, characterized in that: A power motor (6) is fixedly mounted in the middle of the top of the distillation tower (2); a rotating shaft (7) is fixedly sleeved on the other end of the output shaft of the power motor (6); the bottom end of the rotating shaft (7) passes through the distillation tower (2) and extends into the interior of the distillation tower (2); a mixing disc (8) is fixedly sleeved on the outer surface of the rotating shaft (7).

4. A furfural multiple-effect reaction distillation device according to claim 3, characterized in that: The top of the outer surface of the rotating shaft (7) is movably sleeved with a vertical pipe (9), the top of the vertical pipe (9) is fixedly connected to the top of the inside of the distillation tower (2), the bottom of the outer surface of the vertical pipe (9) is movably sleeved with a horizontal pipe (10), the inner surface of the bottom end of the horizontal pipe (10) is fixedly sleeved with the outer surface of the rotating shaft (7), the outer surface of the horizontal pipe (10) is fixedly sleeved with a nozzle (11), and the horizontal pipe (10) will rotate along with the rotating shaft (7).

5. A furfural multiple-effect reaction distillation device according to claim 1, characterized in that: A water pump (12) is fixedly mounted on the top of the water storage tank (3); a water suction pipe (13) is fixedly mounted on the right end of the water pump (12); the other end of the water suction pipe (13) penetrates the water storage tank (3) and extends into the interior of the water storage tank (3); a water outlet pipe (14) is fixedly mounted on the top of the water pump (12); the other end of the water outlet pipe (14) penetrates the distillation tower (2) and the vertical pipe (9) and extends into the interior of the vertical pipe (9); and a water inlet pipe (15) is fixedly sleeved on the top of the left end of the water storage tank (3).

6. A furfural multiple-effect reaction distillation device according to claim 1, characterized in that: A steam reboiler (16) is fixedly mounted on the left side of the bottom end of the water storage tank (3); a steam inlet pipe (17) is fixedly mounted on the right end of the steam reboiler (16); the other end of the steam inlet pipe (17) passes through the distillation tower (2) and extends into the interior of the distillation tower (2); a liquid inlet pipe (18) is fixedly sleeved on the top of the right end of the distillation tower (2); a liquid inlet valve (19) is fixedly mounted on the right end of the liquid inlet pipe (18); a liquid discharge pipe (20) is fixedly sleeved on the bottom end of the distillation tower (2); a liquid discharge valve (21) is fixedly mounted on the bottom end of the liquid discharge pipe (20).

7. A furfural multiple-effect reaction distillation device according to claim 1, characterized in that: A steam exhaust pipe (22) is fixedly sleeved on the right side of the top of the distillation tower (2), a condenser (23) is fixedly installed on the other end of the steam exhaust pipe (22), a reflux pipe (24) is fixedly installed on the bottom end of the condenser (23), and the other end of the reflux pipe (24) is fixedly sleeved on the inner surface of the top of the liquid inlet pipe (18).

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