Purification process and purification equipment for tartaric acid production

Abstract

The invention discloses a purification process for tartaric acid production and purification equipment thereof, and relates to the technical field of tartaric acid purification, the equipment comprises a purification tank, a liquid pumping structure for pumping waste liquid is arranged in an inner cavity of the purification tank, a liquid inlet pipe and a feeding pipe are fixed on the side wall of the purification tank, a discharging pipe is fixed at the bottom end of the purification tank, and the discharging pipe is connected with the purification tank. A valve is installed on the discharging pipe, a fixing plate is fixed to the upper end of the purification tank, and an air injection structure and a driving structure are arranged at the upper end of the fixing plate. The air injection structure is matched with the driving structure, the driving structure drives the plum blossom pipe fitting and the conical cover connected with the lower end to rotate, vortex is formed in an inner cavity of the purification tank, the dissolving process of crude tartaric acid in a solvent can be remarkably accelerated, and the production efficiency is improved; and the air injection structure can blow air into the solution before the solution reaches a supersaturated state, so that uniform mixing of the solvent is promoted, the local supersaturation phenomenon is avoided, and high-quality tartaric acid crystals can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of tartaric acid purification, in particular to a purification process and purification equipment for tartaric acid production. Background Art

[0002] Tartaric acid, an important polyhydroxy organic acid, is widely used in food, medicine, and chemical industries. Its purification process not only affects product quality but also directly impacts production efficiency.

[0003] When it comes to solution mixing, traditional methods struggle to achieve uniform solvent mixing, making localized oversaturation more likely. This can lead to rapid crystal precipitation in that area, resulting in crystals of varying sizes and quality. This not only affects the product's appearance and quality, but can also increase the difficulty and cost of subsequent processing.

[0004] Based on this, a purification process and purification equipment for tartaric acid production are now provided, which can eliminate the disadvantages of existing equipment. Summary of the Invention

[0005] The object of the present invention is to provide a purification process and purification equipment for tartaric acid production to solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A purification device for tartaric acid production includes a purification tank, wherein a liquid extraction structure for extracting waste liquid is provided in the inner cavity of the purification tank, a liquid inlet pipe and a feed pipe are fixed to the side wall of the purification tank, a discharge pipe is fixed to the bottom end of the purification tank, a valve is installed on the discharge pipe, a fixed plate is fixed to the upper end of the purification tank, and an air injection structure for accelerating the precipitation of tartaric acid crystals in the inner cavity of the purification tank and a drive structure for driving the air injection structure are provided at the upper end of the fixed plate;

[0008] The inner cavity of the purification tank is divided into an upper cavity and a lower cavity from top to bottom;

[0009] The liquid extraction structure includes a plum blossom pipe fitting, the lower end of which extends to the inner cavity of the purification tank and is fixedly connected to a conical cover, a filter plate is rotatably mounted on the lower end of the conical cover, a rotating ring is fixed to the top of the outer wall of the plum blossom pipe fitting, the plum blossom pipe fitting is rotatably mounted on the adjustment plate via the rotating ring, and the plum blossom pipe fitting is connected to the driving structure;

[0010] A top plate is rotatably installed in the purification tank, and a plum blossom opening matching the plum blossom pipe fitting is opened in the middle of the top plate.

[0011] Preferably, the driving structure includes a motor mounted on the upper end of the fixed plate, a gear 1 is fixed to the output end of the motor, the gear 1 is meshed and connected to the gear 2, a plum blossom mouth 2 is opened in the middle of the gear 2 to match the plum blossom pipe fitting, and the gear 2 is connected to the jet structure.

[0012] Preferably, the jet structure includes an air cylinder installed on the upper end of a fixed plate, the air cylinder is connected to the interior of the purification tank through an exhaust pipe, the air cylinder is connected to the interior of the air hood through a retractable exhaust pipe, an air disc is rotatably installed on the bottom of the inner wall of the air hood, four connecting pipes are fixed at equal angles on the lower end of the air disc, the air disc is connected to the plum blossom pipe fitting through four connecting pipes, a piston block is sliding on the inner wall of the air cylinder, the piston block is fixedly connected to the connecting block through a piston rod, the connecting block is rotatably connected to one end of the connecting rod at one end away from the piston rod, the other end of the connecting rod is rotatably connected to a turntable deviating from the center of the circle, the turntable is fixed on the upper end of gear three, the gear three is rotatably installed on the upper end of the fixed plate, and gear three is meshed with gear two.

[0013] Preferably, a one-way air extraction valve and a one-way air exhaust valve are respectively provided at the connection positions between the air cylinder, the air extraction pipe and the telescopic exhaust pipe.

[0014] Preferably, the plum blossom pipe fitting includes a main pipe and four side pipes fixed at equal angles on the outer wall of the main pipe, the upper end of each side pipe is connected to a connecting pipe, the inner wall of the main pipe is slidably connected to the outer wall of the special-shaped long pipe, and a liquid pump is installed on the special-shaped long pipe.

[0015] Preferably, the lower end of the side pipe is connected to a ventilation pipe, the ventilation pipe is opened in the conical cover, and a plurality of nozzles are installed on the ventilation pipe, and the nozzles are directed towards the filter plate.

[0016] Preferably, two hydraulic cylinders are symmetrically provided at both ends of the adjustment plate, and the two hydraulic cylinders are mounted on the upper end of a fixing ring, and the fixing ring is fixed to the outer side wall of the purification tank.

[0017] Preferably, a scraper is fixed to the lower end of the top plate, and the scraper is in contact with the inner wall of the upper cavity.

[0018] A purification process for tartaric acid production uses the above-mentioned purification equipment for tartaric acid production to produce and purify tartaric acid.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention cooperates with a jet structure and a drive structure. The drive structure drives the plum blossom pipe and the conical cover connected to the lower end to rotate, forming a vortex in the inner cavity of the purification tank, which can significantly accelerate the dissolution process of crude tartaric acid in the solvent and improve production efficiency. The jet structure can blow gas into the solution before the solution reaches a supersaturated state, promote uniform mixing of the solvent, avoid the occurrence of local supersaturation, and help obtain high-quality tartaric acid crystals.

[0021] 2. The jet structure of the present invention allows the gas to enter the ventilation pipe in the conical cover through the side pipe and finally be discharged from the nozzle. Since the nozzle is directed towards the filter plate, the material at the filter hole position of the filter plate can be cleaned during the jetting process, ensuring that the filter hole of the filter plate is always unobstructed and the normal operation of the equipment is guaranteed; and the gas can slowly cool the solution to avoid rapid cooling of the solution to prevent the formation of fine crystals or impurities.

[0022] 3. The liquid extraction structure of the present invention can effectively extract the waste liquid from the upper layer of the purification tank, and the hydraulic cylinder can adjust the filter plate height, so that the filter plate presses down the tartaric acid crystals during drainage, avoiding crystal accumulation affecting the waste liquid extraction, thereby improving the convenience and efficiency of the drainage operation.

[0023] 4. When the plum blossom tube of the present invention rotates, it drives the top plate to rotate, and then drives the scraper to rotate. The scraper can scrape off the solution and crystals attached to the inner wall of the upper cavity of the purification tank and allow them to enter the lower cavity, which is beneficial to the subsequent precipitation of tartaric acid crystals and improves the yield of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the liquid pumping structure of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the driving structure and the jet structure of the present invention.

[0028] Figure 5 It is a structural schematic diagram of the conical cover, ventilation pipe, nozzle and filter plate of the present invention.

[0029] Figure 6 For the present invention Figure 3 Schematic diagram of the structure at position A in the figure.

[0030] Reference numerals: 1. Purification tank; 101. Upper chamber; 102. Lower chamber; 11. Liquid inlet pipe; 12. Feed pipe; 13. Discharge pipe; 14. Valve; 16. Fixed plate; 21. Top plate; 22. Plum blossom port 1; 23. Scraper; 3. Liquid extraction structure; 31. Plum blossom pipe fitting; 311. Main pipe; 312. Side pipe; 313. Rotating ring; 32. Conical cover; 321. Ventilation pipe; 322. Nozzle; 33. Filter plate; 34. Special-shaped long pipe; 4. Driving structure; 401. Motor; 402. Gear 1; 403. Gear 2; 404. Gear 2; 5. Jet structure; 501. Gear 3; 502. Turntable; 503. Connecting rod; 504. Connecting block; 505. Piston rod; 506. Piston block; 507. Air cylinder; 508. Exhaust pipe; 5081. One-way exhaust valve; 509. Retractable exhaust pipe; 5091. One-way exhaust valve; 510. Air hood; 511. Air disc; 512. Connecting pipe; 61. Fixing ring; 62. Hydraulic cylinder; 63. Adjusting plate. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] In one embodiment, Figures 1 to 6 As shown, a purification device for tartaric acid production includes a purification tank 1, an inner cavity of the purification tank 1 is provided with a liquid extraction structure 3 for extracting waste liquid, a liquid inlet pipe 11 and a feed pipe 12 are fixed to the side wall of the purification tank 1, a discharge pipe 13 is fixed to the bottom end of the purification tank 1, and a valve 14 is installed on the discharge pipe 13, a fixing plate 16 is fixed to the upper end of the purification tank 1, and an injection structure 5 for accelerating the precipitation of tartaric acid crystals in the inner cavity of the purification tank 1 and a driving structure 4 for driving the injection structure 5 are provided on the upper end of the fixing plate 16;

[0033] The inner cavity of the purification tank 1 is composed of an upper cavity 101 and a lower cavity 102 from top to bottom;

[0034] The liquid extraction structure 3 includes a plum blossom pipe 31, the lower end of which extends to the inner cavity of the purification tank 1 and is fixedly connected to a conical cover 32. A filter plate 33 is rotatably mounted on the lower end of the conical cover 32. A rotating ring 313 is fixed to the top of the outer wall of the plum blossom pipe 31. The plum blossom pipe 31 is rotatably mounted on the adjustment plate 63 via the rotating ring 313, and the plum blossom pipe 31 is connected to the driving structure 4.

[0035] A top plate 21 is rotatably mounted in the purification tank 1 , and a plum blossom opening 22 matching the plum blossom pipe fitting 31 is opened in the middle of the top plate 21 .

[0036] In this embodiment, crude tartaric acid is first added to the interior of the purification tank 1 through the feed pipe 12, and the solvent is added to the interior of the purification tank 1 through the liquid inlet pipe 11. The driving structure 4 drives the plum blossom pipe 31 to rotate, and the conical cover 32 connected to its lower end forms a vortex during rotation to accelerate the dissolution of the solid. Before the solution reaches an oversaturated state, gas is blown into the solution through the jet structure 5 to promote uniform mixing of the solvent and avoid local oversaturation.

[0037] During the cooling and crystallization stage, the air jet structure 5 synchronously adjusts the gas flow rate to control the crystallization rate by changing the solution convection intensity.

[0038] After the crystallization is completed, the liquid extraction structure 3 extracts the waste liquid from the upper layer. After the extraction is completed, the valve 14 is opened and the purified tartaric acid crystals are discharged through the discharge pipe 13.

[0039] In an optional embodiment, if Figure 1 、 Figure 2 and Figure 4 As shown, the driving structure 4 includes a motor 401 mounted on the upper end of the fixed plate 16, and a gear 1 402 is fixed to the output end of the motor 401. The gear 1 402 is meshed and connected to the gear 2 403. A plum blossom mouth 2 404 matching the plum blossom pipe 31 is opened in the middle of the gear 2 403, and the gear 2 403 is connected to the jet structure 5.

[0040] It should be noted that the motor 401 transmits power to the plum blossom pipe 31 and the jet structure 5 through the meshing transmission of the gear 1 402 and the gear 2 403 , thereby driving the jet structure 5 to operate and driving the plum blossom pipe 31 to rotate.

[0041] In an optional embodiment, if Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6As shown, the jet structure 5 includes an air cylinder 507 mounted on the upper end of the fixed plate 16, the air cylinder 507 is connected to the interior of the purification tank 1 through an exhaust pipe 508, and the air cylinder 507 is connected to the interior of the air hood 510 through a telescopic exhaust pipe 509. A gas disc 511 is rotatably mounted on the bottom of the inner wall of the air hood 510, and four connecting pipes 512 are fixed at equal angles at the lower end of the gas disc 511. The gas disc 511 is connected to the plum blossom pipe 31 through the four connecting pipes 512. The gas A piston block 506 slides on the inner wall of the cylinder 507, and the piston block 506 is fixedly connected to the connecting block 504 through the piston rod 505. The end of the connecting block 504 away from the piston rod 505 is rotatably connected to one end of the connecting rod 503, and the other end of the connecting rod 503 is rotatably connected to the turntable 502 at a position offset from the center of the circle. The turntable 502 is fixed to the upper end of the gear three 501, and the gear three 501 is rotatably installed on the upper end of the fixed plate 16, and the gear three 501 is meshed with the gear two 403.

[0042] Among them, the connection positions of the air cylinder 507, the air extraction pipe 508 and the telescopic exhaust pipe 509 are respectively provided with a one-way air extraction valve 5081 and a one-way exhaust valve 5091.

[0043] It should be noted that, through the engagement of gear three 501 with gear two 403, gear two 403 drives gear three 501 to rotate, thereby driving the turntable 502 to rotate, and the piston block 506 is driven to reciprocate in the air cylinder 507 through the connecting rod 503, the connecting block 504 and the piston rod 505. Due to the one-way air extraction valve 5081 and the one-way exhaust valve 5091, when the piston block 506 reciprocates in the air cylinder 507, the exhaust pipe 508 extracts the gas inside the purification tank 1 and discharges it into the air hood 510 through the retractable exhaust pipe 509. The air hood 510 discharges the gas into the purification tank 1 through four connecting pipes 512 and the plum blossom pipe fitting 31, thereby accelerating air circulation and facilitating subsequent crystal precipitation.

[0044] In an optional embodiment, if Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the plum blossom pipe fitting 31 includes a main pipe 311 and four side pipes 312 fixed at equal angles on the outer wall of the main pipe 311. The upper end of each side pipe 312 is connected to a connecting pipe 512. The inner wall of the main pipe 311 is slidably connected to the outer wall of the special-shaped long pipe 34. A liquid pump is installed on the special-shaped long pipe 34.

[0045] It should be noted that the liquid extraction pump discharges the waste liquid from the interior of the purification tank 1 through the main pipe 311 and the special-shaped long pipe 34 in sequence, which is conducive to the subsequent collection of tartaric acid crystals.

[0046] In an optional embodiment, if Figure 2 and Figure 3As shown, the lower end of the side pipe 312 is connected to the ventilation pipe 321 . The ventilation pipe 321 is opened in the conical cover 32 . A plurality of nozzles 322 are installed on the ventilation pipe 321 . The nozzles 322 face the filter plate 33 .

[0047] It should be noted that the gas enters the ventilation pipe 321 through the side pipe 312 and is finally discharged through the nozzle 322. Since the nozzle 322 is facing the filter plate 33, the gas can clean the material at the filter holes of the filter plate 33 when it is sprayed out, thereby ensuring that the filter holes of the filter plate 33 are unobstructed.

[0048] In an optional embodiment, if Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, two hydraulic cylinders 62 are symmetrically provided at both ends of the adjustment plate 63 , and the two hydraulic cylinders 62 are installed on the upper end of a fixing ring 61 , and the fixing ring 61 is fixed to the outer wall of the purification tank 1 .

[0049] It should be noted that, since the cooperation between the plum blossom mouth 2 404 and the plum blossom pipe fitting 31 adopts a non-circular cross-section design, the plum blossom pipe fitting 31 allows axial displacement while transmitting torque; and since the plum blossom pipe fitting 31 is rotatably mounted on the adjustment plate 63 through the rotating ring 313, the hydraulic cylinder 62 can adjust the height position of the adjustment plate 63, thereby adjusting the height of the plum blossom pipe fitting 31, and further adjusting the height of the conical cover 32 and the filter plate 33 at the lower end of the plum blossom pipe fitting 31.

[0050] In an optional embodiment, if Figure 2 and Figure 3 As shown, a scraper 23 is fixed to the lower end of the top plate 21 , and the scraper 23 is in contact with the inner wall of the upper cavity 101 .

[0051] It should be noted that, since gear 2 403 can drive the plum blossom tube 31 to rotate through the plum blossom mouth 2 404, and a plum blossom mouth 1 22 matching the plum blossom tube 31 is provided in the middle of the top plate 21, the plum blossom tube 31 drives the top plate 21 to rotate when it rotates, and further drives the scraper 23 to rotate. During the rotation of the scraper 23, the solution and crystals attached to the inner wall of the upper chamber 101 are scraped off, and then the solution and crystals enter the lower chamber 102, which is beneficial to the subsequent crystal precipitation of tartaric acid.

[0052] The above embodiment discloses a purification device for tartaric acid production, wherein crude tartaric acid is first added into the interior of the purification tank 1 through the feed pipe 12 , and the solvent is added into the interior of the purification tank 1 through the liquid inlet pipe 11 .

[0053] During the fusion stage, the height of the adjustment plate 63 is first adjusted by the hydraulic cylinder 62, and the height of the conical cover 32 and the filter plate 33 fixed at the lower end of the plum blossom tube 31 is further adjusted. The conical cover 32 and the filter plate 33 enter the solution, and the motor 401 drives the plum blossom tube 31 and the conical cover 32 and the filter plate 33 at its lower end to rotate through gear 1 402 and gear 2 403, thereby accelerating the dissolution of crude tartaric acid in the solvent; at the same time, the piston block 506 reciprocates inside the gas cylinder 507, thereby sucking gas from the lower chamber 102 through the exhaust pipe 508, and after compression, it is injected into the gas cover 510 through the retractable exhaust pipe 509, and finally enters the solution, promoting uniform mixing of the solvent and avoiding local oversaturation.

[0054] During the cooling and crystallization stage, the hydraulic cylinder 62 adjusts the conical cover 32 and the filter plate 33 above the solution. At this time, the nozzle 322 sprays air, and the gas passes through the filter holes of the filter plate 33 and acts on the surface of the solution, which not only cleans the filter holes of the filter plate 33, but also achieves a slow cooling of the solution to avoid rapid cooling of the solution to prevent the formation of fine crystals or impurities.

[0055] After the crystallization is completed, the liquid extraction pump discharges the waste liquid from the inside of the purification tank 1 through the main pipe 311 and the special-shaped long pipe 34 in sequence. The hydraulic cylinder 62 causes the filter plate 33 to press down the tartaric acid crystals to prevent the crystals from piling up, which is not conducive to the extraction of the waste liquid. After the extraction is completed, the valve 14 is opened, and the purified tartaric acid crystals are discharged through the discharge pipe 13.

[0056] This embodiment also discloses a purification process for tartaric acid production, which uses the above-mentioned purification equipment for tartaric acid production to produce and purify tartaric acid.

[0057] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A purification device for tartaric acid production, characterized in that, The invention comprises a purification tank (1), wherein an inner cavity of the purification tank (1) is provided with a liquid extraction structure (3) for extracting waste liquid, a liquid inlet pipe (11) and a feed pipe (12) are fixed to the side wall of the purification tank (1), a discharge pipe (13) is fixed to the bottom end of the purification tank (1), a valve (14) is installed on the discharge pipe (13), a fixing plate (16) is fixed to the upper end of the purification tank (1), and an injection structure (5) for accelerating the precipitation of tartaric acid crystals in the inner cavity of the purification tank (1) and a driving structure (4) for driving the injection structure (5) to operate are provided at the upper end of the fixing plate (16); The inner cavity of the purification tank (1) is composed of an upper cavity (101) and a lower cavity (102) from top to bottom; The liquid extraction structure (3) comprises a plum blossom pipe (31), the lower end of the plum blossom pipe (31) extends to the inner cavity of the purification tank (1) and is fixedly connected to a conical cover (32), a filter plate (33) is rotatably mounted on the lower end of the conical cover (32), a rotating ring (313) is fixed on the top of the outer wall of the plum blossom pipe (31), the plum blossom pipe (31) is rotatably mounted on the adjustment plate (63) via the rotating ring (313), and the plum blossom pipe (31) is connected to the driving structure (4); A top plate (21) is rotatably mounted in the purification tank (1), and a plum blossom opening (22) matching the plum blossom pipe fitting (31) is provided in the middle of the top plate (21).

2. A tartaric acid production purification equipment according to claim 1, characterized in that, The driving structure (4) comprises a motor (401) mounted on the upper end of a fixed plate (16); a gear 1 (402) is fixed to the output end of the motor (401); the gear 1 (402) is meshedly connected to a gear 2 (403); a plum blossom opening 2 (404) matching the plum blossom pipe (31) is provided in the middle of the gear 2 (403); and the gear 2 (403) is connected to the jet structure (5).

3. A tartaric acid production purification equipment according to claim 2, characterized in that, The jet structure (5) includes an air cylinder (507) mounted on the upper end of the fixed plate (16), the air cylinder (507) is connected to the interior of the purification tank (1) through an air extraction pipe (508), the air cylinder (507) is connected to the interior of the air hood (510) through a telescopic exhaust pipe (509), an air disc (511) is rotatably mounted on the bottom of the inner wall of the air hood (510), four connecting pipes (512) are fixed at equal angles on the lower end of the air disc (511), the air disc (511) is connected to the plum blossom pipe (31) through the four connecting pipes (512), and the air cylinder A piston block (506) slides on the inner wall of (507), and the piston block (506) is fixedly connected to the connecting block (504) through the piston rod (505). The end of the connecting block (504) away from the piston rod (505) is rotatably connected to one end of the connecting rod (503), and the other end of the connecting rod (503) is rotatably connected to the turntable (502) at a position deviated from the center of the circle. The turntable (502) is fixed to the upper end of the gear three (501), and the gear three (501) is rotatably installed on the upper end of the fixed plate (16), and the gear three (501) is meshed with the gear two (403).

4. A purification equipment for tartaric acid production according to claim 3, characterized in that, A one-way air extraction valve (5081) and a one-way air exhaust valve (5091) are respectively provided at the connection positions between the air cylinder (507), the air extraction pipe (508) and the telescopic exhaust pipe (509).

5. A purification equipment for tartaric acid production according to claim 3, characterized in that, The plum blossom pipe member (31) comprises a main pipe (311) and four side pipes (312) fixed at equal angles on the outer wall of the main pipe (311), the upper end of each side pipe (312) being connected to a connecting pipe (512), the inner wall of the main pipe (311) being slidably connected to the outer wall of the special-shaped long pipe (34), and a liquid pump being installed on the special-shaped long pipe (34).

6. A purification equipment for tartaric acid production according to claim 5, characterized in that, The lower end of the side pipe (312) is connected to a ventilation pipe (321). The ventilation pipe (321) is opened in the conical cover (32). A plurality of nozzles (322) are installed on the ventilation pipe (321). The nozzles (322) face the filter plate (33).

7. A purification equipment for tartaric acid production according to claim 1, characterized in that, Two hydraulic cylinders (62) are symmetrically arranged at both ends of the adjustment plate (63). The two hydraulic cylinders (62) are mounted on the upper end of a fixing ring (61). The fixing ring (61) is fixed to the outer wall of the purification tank (1).

8. A purification equipment for tartaric acid production according to claim 1, characterized in that, A scraper (23) is fixed to the lower end of the top plate (21), and the scraper (23) is in contact with the inner wall of the upper cavity (101).

9. A purification process for tartaric acid production, characterized in that: Tartaric acid is produced and purified using the tartaric acid production purification equipment according to any one of claims 1 to 8.

Images