Neotame production system

Abstract

A neotame production system relates to the technical field of neotame production devices, and comprises a reaction unit, a distillation unit, a crude dissolution unit and a refining unit, the crude dissolution unit comprises a crude dissolution assembly, a crystallization pot and a second centrifuge, an outlet of the reaction unit is connected with an inlet of the distillation unit, an outlet of the distillation unit is connected with an inlet of the crude dissolution assembly, and an outlet of the refining unit is connected with an outlet of the crystallization pot. An outlet of the coarse dissolving assembly is connected with an inlet of the crystallization pot, an outlet of the crystallization pot is connected with an inlet of the second centrifugal machine, an outlet of the second centrifugal machine is connected with the refining unit, a product obtained after reaction is conveyed to the distillation unit for reduced pressure distillation, impurities are removed through reduced pressure distillation, and then the product is conveyed to the coarse dissolving assembly. Distillation is carried out through the coarse dissolving assembly, peculiar smell is brought out through gas, the peculiar smell is removed, then crystallization and centrifugation are carried out, and finally refining is carried out through the refining unit, so that the peculiar smell of the obtained product is relieved or even removed, and the yield of the product is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of sweet production equipment, and in particular relates to a neotame production system. Background Art

[0002] The chemical name of neotame is N-[N-(3,3-dimethylbutyl)-L-α-aspartyl]-L-phenylalanine-1-methyl ester. Neotame is a white crystalline powder containing about 4.5% of crystal water. It is a functional sweetener. It has a pure sweetness, which is very close to aspartame; its sweetness is 7000 to 13000 times sweeter than sucrose, 30 to 60 times sweeter than aspartame, and its energy value is almost zero. In the prior art, when preparing neotame, aspartame and 3,3-dimethylbutyraldehyde are first added to a closed reaction vessel, a catalyst is added and hydrogen is introduced for reaction. After the reaction, the crude product of neotame can be obtained by filtering, distilling, crystallizing and other steps. The crude product is further processed to obtain the finished product. During the synthesis process, the raw materials are not reacted thoroughly, resulting in the presence of peculiar smell in neotame. Summary of the invention

[0003] In view of this, the utility model provides a neotame production system for reducing the foreign taste in neotame.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A neotame production system comprises a reaction unit, a distillation unit, a crude dissolution unit and a refining unit, wherein the crude dissolution unit comprises a crude dissolution component, a crystallization pot and a second centrifuge, wherein the outlet of the reaction unit is connected to the inlet of the distillation unit, the outlet of the distillation unit is connected to the inlet of the crude dissolution component, the outlet of the crude dissolution component is connected to the inlet of the crystallization pot, the outlet of the crystallization pot is connected to the inlet of the second centrifuge, and the outlet of the second centrifuge is connected to the refining unit to remove odor.

[0006] Preferably, the crude dissolution component includes a crude dissolution kettle body, an anhydrous ethanol feed pipe, and a venting portion, wherein the venting portion is located outside the crude dissolution kettle body, the liquid phase inlet of the crude dissolution kettle body is connected to the anhydrous ethanol feed pipe, the material inlet of the crude dissolution kettle body is connected to the outlet of the distillation unit, the gas outlet of the crude dissolution kettle body is connected to the venting portion, and the material outlet of the crude dissolution kettle body is connected to the inlet of the crystallization pot.

[0007] Preferably, the venting part comprises a straight pipe fitting and a spiral pipe fitting, the inlet of the straight pipe fitting is connected to the gas outlet of the crude dissolving kettle body, and the outlet of the straight pipe fitting is connected to the inlet of the spiral pipe fitting.

[0008] Preferably, the displacement from the inlet of the spiral pipe to the outlet of the spiral pipe is more than 1.5 times the length of the straight pipe.

[0009] Preferably, the reaction unit comprises a hydrogenation reactor and a filter, the outlet of the hydrogenation reactor is connected to the inlet of the filter, and the outlet of the filter is connected to the distillation unit.

[0010] Preferably, the hydrogenation reactor is provided with a methanol inlet pipe, a catalyst inlet pipe, an aspartame inlet pipe, a 3,3-dimethylbutyraldehyde inlet pipe, a glacial acetic acid inlet pipe, and a hydrogen inlet pipe, and the raw material inlet of the hydrogenation reactor is respectively connected to the aspartame inlet pipe, the 3,3-dimethylbutyraldehyde inlet pipe, the methanol inlet pipe, the catalyst inlet pipe, and the glacial acetic acid inlet pipe, and the gas inlet of the hydrogenation reactor is connected to the hydrogen inlet pipe.

[0011] Preferably, the distillation unit comprises a vacuum distillation kettle, a first cooling kettle, and a first centrifuge, the inlet of the vacuum distillation kettle is connected to the outlet of the filter, the outlet of the vacuum distillation kettle is connected to the inlet of the first cooling kettle, the outlet of the first cooling kettle is connected to the inlet of the first centrifuge, and the outlet of the first centrifuge is connected to the inlet of the crude solution kettle body.

[0012] Preferably, a sodium bicarbonate inlet pipe and a first water inlet pipe are provided on the vacuum distillation kettle, and the inlet of the vacuum distillation kettle is connected to the sodium bicarbonate inlet pipe and the first water inlet pipe respectively.

[0013] Preferably, the refining unit comprises a refining kettle, a second cooling kettle, a third centrifuge, and a drying machine, the inlet of the refining kettle is connected to the outlet of the second centrifuge, the outlet of the refining kettle is connected to the inlet of the second cooling kettle, the outlet of the second cooling kettle is connected to the inlet of the third centrifuge, and the outlet of the third centrifuge is connected to the inlet of the drying machine.

[0014] Preferably, an ethanol inlet pipe, an activated carbon addition pipe, and a second water inlet pipe are provided on the refining kettle, and the inlet of the refining kettle is connected to the ethanol inlet pipe, the activated carbon addition pipe, and the second water inlet pipe, respectively.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The neotame production system provided by the utility model transports the product after the reaction to a distillation unit for vacuum distillation, removes impurities by vacuum distillation, and then transports it to the crude dissolving component. Under the premise of ensuring that the neotame product is not decomposed, distillation is performed through the crude dissolving component to bring out the odor through the gas, so that the odor is removed, and then crystallization and centrifugation are performed. Finally, the product is refined by the refining unit, so that the odor in the obtained product is reduced or even removed, and the product yield is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a flow chart of the neotame production system.

[0018] Figure 2 It is a front view of the rough dissolution component.

[0019] In the figure: neotame production system 10, reaction unit 100, hydrogenation reactor 110, methanol inlet pipe 111, catalyst inlet pipe 112, aspartame inlet pipe 113, 3,3-dimethylbutyraldehyde inlet pipe 114, glacial acetic acid inlet pipe 115, hydrogen inlet pipe 116, filter 120, distillation unit 200, vacuum distillation reactor 210, sodium bicarbonate inlet pipe 211, first water inlet pipe 212, first cooling reactor 220, first Centrifuge 230, crude dissolution unit 300, crude dissolution assembly 310, crude dissolution kettle body 311, anhydrous ethanol feed pipe 312, venting part 313, straight pipe fitting 3131, spiral pipe fitting 3132, crystallization pot 320, second centrifuge 330, refining unit 400, refining kettle 410, ethanol inlet pipe 411, activated carbon addition pipe 412, second water inlet pipe 413, second cooling kettle 420, third centrifuge 430, dryer 440. DETAILED DESCRIPTION

[0020] The technical scheme and technical effects of the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0021] Please see Figure 1 to Figure 2 A neotame production system 10 includes a reaction unit 100, a distillation unit 200, a crude dissolution unit 300, and a refining unit 400. The crude dissolution unit 300 includes a crude dissolution component 310, a crystallization pot 320, and a second centrifuge 330. The outlet of the reaction unit 100 is connected to the inlet of the distillation unit 200, the outlet of the distillation unit 200 is connected to the inlet of the crude dissolution component 310, the outlet of the crude dissolution component 310 is connected to the inlet of the crystallization pot 320, the outlet of the crystallization pot 320 is connected to the inlet of the second centrifuge 330, and the outlet of the second centrifuge 330 is connected to the refining unit 400 to remove odor.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The neotame production system 10 provided by the utility model transports the product after the reaction to the distillation unit 200 for vacuum distillation to remove impurities, and then transports it to the crude dissolution component 310. Under the premise of ensuring that the neotame product is not decomposed, distillation is performed through the crude dissolution component 310 to remove the odor through the gas, so that the odor is removed, and then crystallization and centrifugation are performed. Finally, the product is refined through the refining unit 400, so that the odor in the obtained product is reduced or even removed, and the product yield is not affected.

[0024] Furthermore, the crude dissolution component 310 includes a crude dissolution kettle body 311, an anhydrous ethanol feed pipe 312, and a venting portion 313, wherein the venting portion 313 is located outside the crude dissolution kettle body 311, the liquid phase inlet of the crude dissolution kettle body 311 is connected to the anhydrous ethanol feed pipe 312, the material inlet of the crude dissolution kettle body 311 is connected to the outlet of the distillation unit 200, the gas outlet of the crude dissolution kettle body 311 is connected to the venting portion 313, and the material outlet of the crude dissolution kettle body 311 is connected to the inlet of the crystallization pot 320. Anhydrous ethanol is added to the crude dissolution kettle body 311 through the anhydrous ethanol feed pipe 312, so that the neotame product will not be decomposed, and then the crude dissolution kettle body 311 is heated to generate ethanol vapor during vacuum distillation, and a small amount of ethanol is condensed and refluxed from the venting portion 313, and the gas is discharged through the venting portion 313 to remove the odor contained in the system through the ethanol vapor.

[0025] Furthermore, the venting part 313 includes a straight pipe 3131 and a spiral pipe 3132, the inlet of the straight pipe 3131 is connected to the gas outlet of the crude dissolving kettle body 311, and the outlet of the straight pipe 3131 is connected to the inlet of the spiral pipe 3132. When ethanol vapor enters the venting part 313, it is cooled by air, and a large amount of ethanol vapor is dissipated through the outlet of the spiral pipe 3132. When a small amount of steam condenses and flows back into the straight pipe 3131 along the spiral pipe 3132, since the ethanol vapor dissipates heat slowly in the straight pipe 3131 and dissipates heat quickly in the spiral pipe 3132, and the steam in the straight pipe 3131 has high heat, the steam in the straight pipe 3131 exchanges heat with a small amount of refluxed liquid, so that the liquid is heated by a large amount of gas again, further taking away the odor, and the target product can flow back into the crude dissolving kettle body 311.

[0026] Furthermore, the displacement from the inlet of the spiral pipe 3132 to the outlet of the spiral pipe 3132 is more than 1.5 times the length of the straight pipe 3131, so as to prevent a large amount of ethanol vapor from being liquefied.

[0027] Furthermore, the reaction unit 100 includes a hydrogenation reactor 110 and a filter 120 . The outlet of the hydrogenation reactor 110 is connected to the inlet of the filter 120 , and the outlet of the filter 120 is connected to the distillation unit 200 .

[0028] Further, the hydrogenation reactor 110 is provided with a methanol inlet pipe 111, a catalyst inlet pipe 112, an aspartame inlet pipe 113, a 3,3-dimethylbutyraldehyde inlet pipe 114, a glacial acetic acid inlet pipe 115, and a hydrogen inlet pipe 116. The raw material inlet of the hydrogenation reactor 110 is connected to the aspartame inlet pipe 113, the 3,3-dimethylbutyraldehyde inlet pipe 114, the methanol inlet pipe 111, the catalyst inlet pipe 112, and the glacial acetic acid inlet pipe 115, respectively. The gas inlet of the hydrogenation reactor 110 is connected to the The hydrogen inlet pipe 116 is connected; the catalyst inlet pipe 112 inputs 5%-10% palladium carbon catalyst, and the catalyst input by the catalyst inlet pipe 112 and the glacial acetic acid input by the glacial acetic acid inlet pipe 115 jointly catalyze the 3,3-dimethylbutyraldehyde input by the 3,3-dimethylbutyraldehyde inlet pipe 114 and the aspartame input by the aspartame inlet pipe 113 to react under the condition of hydrogen input by the hydrogen inlet pipe 116, so that the 3,3-dimethylbutyraldehyde reacts as completely as possible, which improves the yield on the one hand and reduces the generation of odor on the other hand.

[0029] Furthermore, the distillation unit 200 includes a vacuum distillation kettle 210, a first cooling kettle 220, and a first centrifuge 230. The inlet of the vacuum distillation kettle 210 is connected to the outlet of the filter 120, the outlet of the vacuum distillation kettle 210 is connected to the inlet of the first cooling kettle 220, the outlet of the first cooling kettle 220 is connected to the inlet of the first centrifuge 230, and the outlet of the first centrifuge 230 is connected to the inlet of the crude solution kettle body 311.

[0030] Furthermore, a sodium bicarbonate inlet pipe 211 and a first water inlet pipe 212 are provided on the vacuum distillation kettle 210, and the inlet of the vacuum distillation kettle 210 is connected to the sodium bicarbonate inlet pipe 211 and the first water inlet pipe 212 respectively; the product of the reaction in the hydrogenation reactor 110 is filtered by the filter 120 and then transported to the vacuum distillation kettle 210 by a pump, and vacuum distillation is performed to remove excess methanol, and then sodium bicarbonate transported by the sodium bicarbonate inlet pipe 211 and water transported by the first water inlet pipe 212 are added, so that sodium bicarbonate reacts with glacial acetic acid in the vacuum distillation kettle 210 to adjust the pH value of the system, and the product is cooled and crystallized by the first cooling kettle 220, and centrifuged by the first centrifuge 230 to remove the glacial acetic acid in the system and remove impurities.

[0031] Furthermore, the refining unit 400 includes a refining kettle 410, a second cooling kettle 420, a third centrifuge 430, and a drying machine 440. The inlet of the refining kettle 410 is connected to the outlet of the second centrifuge 330, the outlet of the refining kettle 410 is connected to the inlet of the second cooling kettle 420, the outlet of the second cooling kettle 420 is connected to the inlet of the third centrifuge 430, and the outlet of the third centrifuge 430 is connected to the inlet of the drying machine 440.

[0032] Furthermore, an ethanol inlet pipe 411, an activated carbon addition pipe 412, and a second water inlet pipe 413 are provided on the refining kettle 410, and the inlet of the refining kettle 410 is connected to the ethanol inlet pipe 411, the activated carbon addition pipe 412, and the second water inlet pipe 413 respectively; the material after centrifugation in the second centrifuge 330 is transported to the refining kettle 410 for refining, and then cooled by the second cooling kettle 420, centrifuged by the third centrifuge 430, and dried by the dryer 440 to obtain the product neotame.

[0033] The following describes the use of the utility model.

[0034] In the hydrogenation reactor 110, the catalyst input from the catalyst inlet pipe 112 and the glacial acetic acid input from the glacial acetic acid inlet pipe 115 jointly catalyze the 3,3-dimethylbutyraldehyde input from the 3,3-dimethylbutyraldehyde inlet pipe 114 and the aspartame input from the aspartame inlet pipe 113 to react under the condition of the hydrogen input from the hydrogen inlet pipe 116. The product of the reaction in the hydrogenation reactor 110 is filtered by the filter 120 and then pumped to the vacuum distillation reactor 210 for vacuum distillation to remove excess methanol. Then, sodium bicarbonate transported from the sodium bicarbonate inlet pipe 211 and water transported from the first water inlet pipe 212 are added to react with the glacial acetic acid in the vacuum distillation reactor 210 to adjust the pH value of the system. The product is cooled and crystallized by the first cooling reactor 220 and centrifuged by the first centrifuge 230. The product after centrifugation in the first centrifuge 230 is transported to the crude dissolving kettle body 311, and anhydrous ethanol is added to the crude dissolving kettle body 311 through the anhydrous ethanol feed pipe 312, so that the neotame product will not be decomposed. Then, during the vacuum distillation in the crude dissolving kettle body 311, ethanol vapor is generated by heating. When the ethanol vapor enters the venting part 313, it is cooled by air, and a large amount of ethanol vapor is exported through the spiral pipe 3132. After the vacuum distillation is completed, the liquid in the crude dissolving kettle body 311 is crystallized in the crystallization pot 320 and centrifuged in the second centrifuge 330. After centrifugation, the material centrifuged in the second centrifuge 330 is transported to the refining kettle 410 for refining. After refining, it is cooled by the second cooling kettle 420, centrifuged by the third centrifuge 430, and dried by the dryer 440 to obtain the product neotame.

[0035] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A neotame production system, characterized in that: The invention comprises a reaction unit, a distillation unit, a crude dissolution unit and a refining unit. The crude dissolution unit comprises a crude dissolution component, a crystallization pot and a second centrifuge. The outlet of the reaction unit is connected to the inlet of the distillation unit, the outlet of the distillation unit is connected to the inlet of the crude dissolution component, the outlet of the crude dissolution component is connected to the inlet of the crystallization pot, the outlet of the crystallization pot is connected to the inlet of the second centrifuge, and the outlet of the second centrifuge is connected to the refining unit to remove odor.

2. The neotame production system according to claim 1, characterized in that: The crude dissolution component includes a crude dissolution kettle body, an anhydrous ethanol feed pipe, and a venting part, wherein the venting part is located outside the crude dissolution kettle body, the liquid phase inlet of the crude dissolution kettle body is connected to the anhydrous ethanol feed pipe, the material inlet of the crude dissolution kettle body is connected to the outlet of the distillation unit, the gas outlet of the crude dissolution kettle body is connected to the venting part, and the material outlet of the crude dissolution kettle body is connected to the inlet of the crystallization pot.

3. The neotame production system according to claim 2, characterized in that: The venting part includes a straight pipe and a spiral pipe. The inlet of the straight pipe is connected to the gas outlet of the crude dissolving kettle body, and the outlet of the straight pipe is connected to the inlet of the spiral pipe.

4. The neotame production system according to claim 3, characterized in that: The displacement from the inlet of the spiral pipe to the outlet of the spiral pipe is more than 1.5 times the length of the straight pipe.

5. The neotame production system according to claim 2, characterized in that: The reaction unit comprises a hydrogenation reactor and a filter. The outlet of the hydrogenation reactor is connected to the inlet of the filter, and the outlet of the filter is connected to the distillation unit.

6. The neotame production system according to claim 5, characterized in that: The hydrogenation reactor is provided with a methanol inlet pipe, a catalyst inlet pipe, an aspartame inlet pipe, a 3,3-dimethylbutyraldehyde inlet pipe, a glacial acetic acid inlet pipe, and a hydrogen inlet pipe; the raw material inlet of the hydrogenation reactor is respectively connected with the aspartame inlet pipe, the 3,3-dimethylbutyraldehyde inlet pipe, the methanol inlet pipe, the catalyst inlet pipe, and the glacial acetic acid inlet pipe; and the gas inlet of the hydrogenation reactor is connected with the hydrogen inlet pipe.

7. The neotame production system according to claim 5, characterized in that: The distillation unit includes a vacuum distillation kettle, a first cooling kettle, and a first centrifuge. The inlet of the vacuum distillation kettle is connected to the outlet of the filter, the outlet of the vacuum distillation kettle is connected to the inlet of the first cooling kettle, the outlet of the first cooling kettle is connected to the inlet of the first centrifuge, and the outlet of the first centrifuge is connected to the inlet of the crude solution kettle body.

8. The neotame production system according to claim 7, characterized in that: The vacuum distillation kettle is provided with a sodium bicarbonate inlet pipe and a first water inlet pipe, and the inlet of the vacuum distillation kettle is connected to the sodium bicarbonate inlet pipe and the first water inlet pipe respectively.

9. The neotame production system according to claim 7, characterized in that: The refining unit includes a refining kettle, a second cooling kettle, a third centrifuge, and a drying machine. The inlet of the refining kettle is connected to the outlet of the second centrifuge, the outlet of the refining kettle is connected to the inlet of the second cooling kettle, the outlet of the second cooling kettle is connected to the inlet of the third centrifuge, and the outlet of the third centrifuge is connected to the inlet of the drying machine.

10. The neotame production system according to claim 9, characterized in that: The refining kettle is provided with an ethanol inlet pipe, an activated carbon addition pipe, and a second water inlet pipe, and the inlet of the refining kettle is connected to the ethanol inlet pipe, the activated carbon addition pipe, and the second water inlet pipe respectively.

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