L-aspartic acid purification device

Abstract

The utility model provides an L-aspartic acid purification device. According to the L-aspartic acid purification device, a dissolving tank is fixedly connected to the top of a mounting frame, a filter disc is mounted at the position, close to the middle, of the interior of the dissolving tank through a fixing ring, a plurality of inlet pipes are mounted at the top of the dissolving tank, and a driving structure is mounted at the top of the dissolving tank. A rotating shaft is mounted at the output end of the driving structure, a third mounting ring and two first mounting rings are mounted on the outer surface of the rotating shaft, fixing frames are fixedly connected to the positions, located on the two sides, of the outer surface of the third mounting ring, and grinding rods are fixedly connected to the bottoms of the two fixing frames. According to the L-aspartic acid purification device provided by the utility model, the dissolving speed of raw materials and additives is increased by stirring and grinding in the dissolving tank through the structure, so that the purification efficiency is improved, and the purification purity is favorably improved through multiple purification.

Description

Technical Field

[0001] The utility model relates to the technical field of L-aspartic acid purification, in particular to an L-aspartic acid purification device. Background Art

[0002] L-Aspartic acid is a good nutritional supplement added to various refreshing drinks. It is the main raw material for the production of the sugar substitute aspartame. In the chemical industry, it can be used as a raw material for the manufacture of synthetic resins. It is used in large quantities in the synthesis of the environmentally friendly material polyaspartic acid. It can also be used as a nutritional additive for cosmetics.

[0003] L-aspartic acid needs to be extracted and purified before processing or use. The chemical synthesis method of L-aspartic acid is to use maleic acid or fumaric acid and its esters as raw materials, treat them with ammonia under pressure, and then hydrolyze them to obtain racemic aspartic acid.

[0004] Some auxiliary additives need to be added during the purification process of L-aspartic acid, but the traditional purification equipment process is relatively complicated and lacks structure, which reduces the dissolution rate and quality of additives and raw materials, thereby affecting the purification efficiency and purity.

[0005] Therefore, it is necessary to provide an L-aspartic acid purification device to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model provides an L-aspartic acid purification device, which solves the problem that the traditional purification equipment lacks a stirring structure, reduces the speed and quality of dissolving raw materials and auxiliary additives, and thus affects the purification efficiency and purity of L-aspartic acid.

[0007] In order to solve the above technical problems, the utility model provides an L-aspartic acid purification device comprising: a bottom plate;

[0008] A mounting frame, wherein the mounting frame is fixedly connected to a position near one side of the top of the bottom plate, a dissolving tank is fixedly connected to the top of the mounting frame, a filter disc is installed near the middle of the inside of the dissolving tank through a fixing ring, a plurality of inlet pipes are installed on the top of the dissolving tank, a driving structure is installed on the top of the dissolving tank, a rotating shaft is installed on the output end of the driving structure, a third mounting ring and two first mounting rings are respectively installed on the outer surface of the rotating shaft, the outer surface of the third mounting ring is fixedly connected to the fixing frame at the positions on both sides, a grinding rod is fixedly connected to the bottom of the two fixing frames, a supporting rod is fixedly connected to the opposite side of the outer surfaces of the two first mounting rings, the other end of each group of the supporting rods is fixedly connected to the mounting rod, a cleaning strip is fixedly connected to the opposite side of the two mounting rods, and a mounting pipe with a first solenoid valve is installed at the bottom of the dissolving tank;

[0009] A conveying structure, the conveying structure is fixedly connected to the middle position of the top of the bottom plate, the inlet and outlet of the conveying structure are respectively installed with a fixed pipe and a conveying pipe, a catalytic tank is installed on the top of the bottom plate through a heating structure, the top of the catalytic tank is fixedly connected with a connecting pipe, and an isoelectric point dissolution device is installed on the top of the bottom plate;

[0010] A hole is provided in the middle of the filter disc for the shaft to pass through, and the shaft and the hole are connected without affecting the rotation of the shaft. The bottom of the grinding rod is in contact with the top of the filter disc, and the grinding rod can accelerate the dissolution of the raw materials or additives as the shaft rotates. The support rods on the same side of the two first mounting rings are a group, and the cleaning strip is in contact with the inner surface of the dissolving tank. The cleaning strip is located below the filter disc. For details, please refer to Figure 2 , the other end of the fixed tube is connected to the other end of the first solenoid valve.

[0011] Preferably, a mounting base is fixedly connected to the outer surface of the dissolving tank at the front position, and a control panel is installed on the front of the mounting base;

[0012] The control panel can detect the operating status of the equipment on the baseboard.

[0013] Preferably, a control box is installed on the top of the base plate, and a box door is rotatably connected to the front of the control box;

[0014] A lock is installed on the door.

[0015] Preferably, a second mounting ring is mounted on the outer surface of the rotating shaft, and a stirring rod is mounted on the opposite side of the outer surface of the mounting ring;

[0016] The stirring rod can assist in stirring the liquid.

[0017] Preferably, an addition pipe is installed at a position on one side of the outer surface of the catalyst tank, an outlet of the isoelectric point dissolution device is fixedly connected to a discharge pipe, and the other end of the discharge pipe is fixedly connected to a second solenoid valve;

[0018] The addition tube can be used to add additives to allow the separated and purified fumaric acid to be catalyzed by L-aspartate aminolyase and excess ammonia to generate L-aspartate ammonium.

[0019] Preferably, the driving structure comprises a mounting shell, the front and back sides of the mounting shell are provided with heat dissipation holes, and a driving motor is installed inside the mounting shell;

[0020] The output end of the driving motor is connected to the top end of the rotating shaft.

[0021] Compared with the related art, the L-aspartic acid purification device provided by the utility model has the following beneficial effects:

[0022] The utility model provides an L-aspartic acid purification device. In order to improve the purification efficiency and quality of L-aspartic acid, a dissolving tank with a pressurizing function is first installed on a bottom plate through a mounting frame, and a filter disc is installed inside the dissolving tank through a fixing ring. Then, two first mounting rings and a third mounting ring are installed inside the dissolving tank through a rotating shaft at the output end of a driving structure, and the third mounting ring is located above the filter disc, while the two first mounting rings are located below the filter disc. Then, only two grinding rods need to be installed on both sides of the third mounting ring through two fixing frames, and a cleaning strip is installed on the two first mounting rings through a supporting rod and a mounting rod, and the cleaning strip is close to the inner surface of the dissolving tank. Then, only a catalytic tank and an isoelectric point dissolving device need to be connected through a conveying structure, a conveying pipe, a connecting pipe and a mounting pipe with a first solenoid valve. In actual use, maleic anhydride prepared by cracking benzene and maleic acid hydrolyzed are used as raw materials, which are respectively conveyed to the inside of the dissolving tank through a plurality of inlet pipes. Under the condition of inorganic catalyst and strong acid, it is converted into fumaric acid. In this process, the driving structure will drive the grinding rod to assist in dissolving the raw materials and auxiliary additives on the filter disc. At the same time, the mounting rods on the two support rods will drive the cleaning bar to rotate along the inner surface of the dissolution tank, so that the dissolved raw materials can be stirred and the inner surface of the dissolution tank can be cleaned to prevent the raw materials from sticking to the inner surface of the dissolution tank. The separated and purified fumaric acid is transported to the inside of the catalytic tank through the conveying structure, and catalytically generates L-aspartate ammonium under the action of L-aspartate aminolyase and excess ammonia. The reaction liquid after the conversion is neutralized with sulfuric acid to neutralize the excess ammonia, and then injected into the inside of the isoelectric point dissolution equipment through the connecting pipe. L-aspartic acid is used to precipitate L-aspartic acid at the lowest solubility of the isoelectric point, and the product L-aspartic acid is separated and purified. The structure uses stirring and grinding inside the dissolution tank to increase the dissolution rate of the raw materials and additives, improves the purification efficiency, and is conducive to improving the purification purity through multiple purifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a preferred embodiment of the L-aspartic acid purification device provided by the utility model;

[0024] Figure 2 A structural schematic diagram of a filter disc is provided for the utility model;

[0025] Figure 3 Provided for the utility model Figure 2 An enlarged view of point A is shown;

[0026] Figure 4 A schematic diagram of the structure of the discharge pipe is provided for the utility model;

[0027] Figure 5 A structural schematic diagram of a driving motor is provided for the utility model.

[0028] Numbers in the figure: 1, bottom plate, 2, mounting frame, 3, dissolving tank, 4, mounting base, 5, control panel, 6, inlet pipe, 7, driving structure, 701, mounting shell, 702, driving motor, 703, heat dissipation hole, 8, isoelectric point dissolution equipment, 9, conveying pipe, 10, connecting pipe, 11, catalytic tank, 12, adding pipe, 13, fixing pipe, 14, first solenoid valve, 15, mounting pipe, 16, box door, 17, control box, 18, conveying structure, 19, heating structure, 20, support rod, 21, mounting rod, 22, stirring rod, 23, first mounting ring, 24, second mounting ring, 25, third mounting ring, 26, fixing frame, 27, rotating shaft, 28, filter plate, 29, fixing ring, 30, cleaning strip, 31, grinding rod, 32, discharge pipe, 33, second solenoid valve. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of the L-aspartic acid purification device provided by the utility model; Figure 2 A structural schematic diagram of a filter disc is provided for the utility model; Figure 3 Provided for the utility model Figure 2 An enlarged view of point A is shown; Figure 4 A schematic diagram of the structure of the discharge pipe is provided for the utility model; Figure 5 The utility model provides a schematic diagram of the structure of the driving motor. The L-aspartic acid purification device comprises: a bottom plate 1;

[0031] A mounting frame 2, wherein the mounting frame 2 is fixedly connected to a position near one side of the top of the bottom plate 1, a dissolving tank 3 is fixedly connected to the top of the mounting frame 2, a filter disc 28 is installed near the middle of the inside of the dissolving tank 3 through a fixing ring 29, a plurality of inlet pipes 6 are installed on the top of the dissolving tank 3, a driving structure 7 is installed on the top of the dissolving tank 3, a rotating shaft 27 is installed on the output end of the driving structure 7, a third mounting ring 25 and two first mounting rings 23 are respectively installed on the outer surface of the rotating shaft 27, a fixing frame 26 is fixedly connected to the positions of the outer surface of the third mounting ring 25 at both sides, a grinding rod 31 is fixedly connected to the bottom of the two fixing frames 26, a support rod 20 is fixedly connected to the opposite side of the outer surface of the two first mounting rings 23, a mounting rod 21 is fixedly connected to the other end of each group of the support rods 20, a cleaning strip 30 is fixedly connected to the opposite side of the two mounting rods 21, and a mounting pipe 15 with a first solenoid valve 14 is installed at the bottom of the dissolving tank 3;

[0032] A conveying structure 18, the conveying structure 18 is fixedly connected to the middle position of the top of the bottom plate 1, the inlet and outlet of the conveying structure 18 are respectively installed with a fixed pipe 13 and a conveying pipe 9, a catalytic tank 11 is installed on the top of the bottom plate 1 through a heating structure 19, the top of the catalytic tank 11 is fixedly connected with a connecting pipe 10, and an isoelectric point dissolution device 8 is installed on the top of the bottom plate 1;

[0033] A hole is provided in the middle of the filter disc 28 for the shaft 27 to pass through, and the shaft 27 and the hole are connected so as not to affect the rotation of the shaft 27. The bottom of the grinding rod 31 is in contact with the top of the filter disc 28. The grinding rod 31 can accelerate the dissolution of the raw material or additive as the shaft 27 rotates. The support rods 20 on the same side of the two first mounting rings 23 are a group. The cleaning strip 30 is in contact with the inner surface of the dissolving tank 3. The cleaning strip 30 is located below the filter disc 28. For details, please refer to Figure 2 The other end of the fixed tube 13 is connected to the other end of the first solenoid valve 14, the other end of the delivery tube 9 is connected to the outer surface of the catalyst tank 11, the other end of the connecting tube 10 is connected to the inlet of the isoelectric point dissolution device 8, and the delivery structure 18 includes a shell and a delivery pump that can deliver liquid.

[0034] The outer surface of the dissolving tank 3 is fixedly connected to a mounting base 4 at the front position, and a control panel 5 is installed at the front of the mounting base 4;

[0035] The control panel 5 can detect the operation status of the equipment on the base plate 1 and control the start and stop of the equipment.

[0036] A control box 17 is installed on the top of the base plate 1, and a box door 16 is rotatably connected to the front of the control box 17;

[0037] The box door 16 is provided with a lock, and the control box 17 is provided with a power switch.

[0038] The outer surface of the rotating shaft 27 is mounted with a second mounting ring 24, and the outer surface of the mounting ring 24 is mounted with a stirring rod 22 on the opposite side thereof;

[0039] The stirring rod 22 can assist in stirring the liquid, and the stirring rod 22 is located below the filter plate 28 .

[0040] An addition pipe 12 is installed at one side of the outer surface of the catalyst tank 11, and a discharge pipe 32 is fixedly connected to the outlet of the isoelectric point dissolution device 8, and a second solenoid valve is fixedly connected to the other end of the discharge pipe 32;

[0041] The adding tube 12 is used to add an additive to allow the separated and purified fumaric acid to catalyze the generation of L-aspartate ammonium under the action of L-aspartate aminolyase and excess ammonia. The other end of the second solenoid valve 33 is connected to a sealed tank for collecting the purified L-aspartic acid through a pipeline.

[0042] The driving structure 7 comprises a mounting shell 701, the front and back of the mounting shell 701 are provided with heat dissipation holes 703, and a driving motor 702 is installed inside the mounting shell 701;

[0043] The output end of the driving motor 702 is connected to the top of the rotating shaft 27, and the heat dissipation hole 703 is used to assist in heat dissipation.

[0044] The working principle of the L-aspartic acid purification device provided by the utility model is as follows:

[0045] First, a dissolving tank 3 with a pressurizing function is installed on the bottom plate 1 through the mounting frame 2, and a filter disc 28 is installed inside the dissolving tank 3 through the fixing ring 29, and then two first mounting rings 23 and a third mounting ring 25 are installed inside the dissolving tank 3 through the rotating shaft 27 at the output end of the driving structure 7, and the third mounting ring 25 is located above the filter disc 28, and the two first mounting rings 23 are located below the filter disc 28, and then only two grinding rods 31 need to be installed on both sides of the third mounting ring 25 through two fixing frames 26, and a cleaning strip 30 is installed on the two first mounting rings 23 through the supporting rod 20 and the mounting rod 21, and the cleaning strip 30 is close to the inner surface of the dissolving tank 3, and then only the catalytic tank 11 and the isoelectric point dissolving device need to be connected through the conveying structure 18, the conveying pipe 9, the connecting pipe 10 and the mounting pipe 15 with the first solenoid valve 14, and in actual use, benzene is cracked to prepare maleic anhydride and hydrolyzed to maleic anhydride The diacid is used as the raw material, which is transported to the inside of the dissolving tank 3 through multiple inlet pipes 6, and is converted into fumaric acid under inorganic catalyst and strong acid conditions. In this process, the driving structure 7 will drive the grinding rod 31 to assist in dissolving the raw materials and auxiliary additives on the filter disc 28. At the same time, the mounting rod 21 on the two support rods 20 will drive the cleaning bar 30 to rotate along the inner surface of the dissolving tank 3, which can stir the dissolved raw materials and clean the inner surface of the dissolving tank 3 to prevent the raw materials from sticking to the inner surface of the dissolving tank 3. The separated and purified fumaric acid is transported to the inside of the catalytic tank 11 through the conveying structure 18, and is catalyzed to generate L-aspartate ammonium under the action of L-aspartate aminolyase and excess ammonia. The reaction liquid after the conversion is neutralized with sulfuric acid to remove excess ammonia, and then injected into the inside of the isoelectric point dissolution equipment 8 through the connecting pipe 10, and L-aspartic acid is precipitated at the lowest solubility of the isoelectric point by using L-aspartic acid, and the product L-aspartic acid is separated and purified.

[0046] Compared with the related art, the L-aspartic acid purification device provided by the utility model has the following beneficial effects:

[0047] In order to improve the purification efficiency and quality of L-aspartic acid, a dissolving tank 3 with a pressurizing function is first installed on the bottom plate 1 through the mounting frame 2, and a filter disc 28 is installed inside the dissolving tank 3 through the fixing ring 29. Then, two first mounting rings 23 and a third mounting ring 25 are installed inside the dissolving tank 3 through the rotating shaft 27 at the output end of the driving structure 7, and the third mounting ring 25 is located above the filter disc 28, and the two first mounting rings 23 are located below the filter disc 28. Then, only two grinding rods 31 need to be passed through the two The fixing frame 26 is installed on both sides of the third mounting ring 25, and the cleaning strip 30 is installed on the two first mounting rings 23 through the support rod 20 and the mounting rod 21, and the cleaning strip 30 is placed close to the inner surface of the dissolving tank 3. After that, it is only necessary to connect the catalytic tank 11 and the isoelectric point dissolving device through the conveying structure 18, the conveying pipe 9, the connecting pipe 10 and the mounting pipe 15 with the first solenoid valve 14. In actual use, benzene is cracked to prepare maleic anhydride and hydrolyzed to maleic acid as raw materials, and is respectively conveyed to the dissolving tank 3 through multiple inlet pipes 6. The inside of the tank 3 is converted into fumaric acid under the condition of inorganic catalyst and strong acid. In this process, the driving structure 7 will drive the grinding rod 31 to assist in dissolving the raw materials and auxiliary additives on the filter disc 28. At the same time, the mounting rods 21 on the two support rods 20 will drive the cleaning bar 30 to rotate along the inner surface of the dissolving tank 3, so that the dissolved raw materials can be stirred and the inner surface of the dissolving tank 3 can be cleaned to prevent the raw materials from sticking to the inner surface of the dissolving tank 3. The separated and purified fumaric acid is transported to the inside of the catalytic tank 11 through the conveying structure 18, and catalyzed to generate L-aspartate ammonium under the action of L-aspartate aminolyase and excess ammonia. The reaction liquid after the conversion is neutralized with sulfuric acid to neutralize the excess ammonia, and then injected into the inside of the isoelectric point dissolution device 8 through the connecting pipe 10, and L-aspartic acid is precipitated at the lowest solubility of the isoelectric point by L-aspartic acid, and the product L-aspartic acid is separated and purified. Through this structure, stirring and grinding are used to increase the dissolution rate of raw materials and additives in the dissolving tank 3 to improve the purification efficiency, and multiple purifications are beneficial to improve the purification purity.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An L-aspartic acid purification device, characterized in that, include: Base plate; A mounting frame, wherein the mounting frame is fixedly connected to a position near one side of the top of the bottom plate, a dissolving tank is fixedly connected to the top of the mounting frame, a filter disc is installed near the middle of the inside of the dissolving tank through a fixing ring, a plurality of inlet pipes are installed on the top of the dissolving tank, a driving structure is installed on the top of the dissolving tank, a rotating shaft is installed on the output end of the driving structure, a third mounting ring and two first mounting rings are respectively installed on the outer surface of the rotating shaft, the outer surface of the third mounting ring is fixedly connected to the fixing frame at the positions on both sides, a grinding rod is fixedly connected to the bottom of the two fixing frames, a supporting rod is fixedly connected to the opposite side of the outer surfaces of the two first mounting rings, the other end of each group of the supporting rods is fixedly connected to the mounting rod, a cleaning strip is fixedly connected to the opposite side of the two mounting rods, and a mounting pipe with a first solenoid valve is installed at the bottom of the dissolving tank; A conveying structure, wherein the conveying structure is fixedly connected to the middle position of the top of the base plate, the inlet and outlet of the conveying structure are respectively installed with a fixed pipe and a conveying pipe, a catalytic tank is installed on the top of the base plate through a heating structure, the top of the catalytic tank is fixedly connected with a connecting pipe, and an isoelectric point dissolution device is installed on the top of the base plate.

2. The L-aspartic acid purification device according to claim 1, characterized in that: The outer surface of the dissolving tank is fixedly connected to a mounting base at the front position, and a control panel is installed on the front of the mounting base.

3. The L-aspartic acid purification device according to claim 1, characterized in that: A control box is installed on the top of the bottom plate, and a box door is rotatably connected to the front of the control box.

4. The L-aspartic acid purification device according to claim 1, characterized in that: A second mounting ring is mounted on the outer surface of the rotating shaft, and a stirring rod is mounted on the opposite side of the outer surface of the mounting ring.

5. The L-aspartic acid purification device according to claim 1, characterized in that: An addition tube is installed on one side of the outer surface of the catalyst tank, an outlet of the isoelectric point dissolution device is fixedly connected to a discharge tube, and the other end of the discharge tube is fixedly connected to a second solenoid valve.

6. The L-aspartic acid purification device according to claim 1, characterized in that: The driving structure comprises a mounting shell, the front and back sides of the mounting shell are provided with heat dissipation holes, and a driving motor is installed inside the mounting shell.

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