An apparatus for producing d-chiro-inositol

Abstract

This utility model discloses a production apparatus for D-chiral inositol, relating to the field of D-chiral inositol production technology. The outlet of the conversion liquid tank is connected to a first concentration tank, the outlet of the first concentration tank is connected to a first filter, the liquid phase outlet of the first filter is connected to a second concentration tank, the inlet of the second concentration tank is connected to an ethanol tank, the outlet of the second concentration tank is connected to a second filter, the liquid phase outlet of the second filter is connected to a cooling tank, the outlet of the cooling tank is connected to a third filter, the solid phase outlet of the third filter is connected to a dissolving tank, the inlet of the dissolving tank is connected to a purified water tank, the outlet of the dissolving tank is connected to a crystallization tank, the outlet of the crystallization tank is connected to a centrifuge, the solid phase outlet of the centrifuge is connected to a dryer, and the outlet of the dryer is connected to a finished product tank. The process is simple, reduces production costs, and improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of D-chiral inositol production technology, specifically to a D-chiral inositol production apparatus. Background Technology

[0002] D-chiral inositol is widely distributed in organisms, especially in the nervous system and cardiac muscle. It is an important secondary messenger molecule that participates in various biological metabolic and signal transduction processes.

[0003] In recent years, the bioconversion synthesis of D-chiral inositol has become a new development trend. Currently, research mainly focuses on two aspects: modifying microorganisms to convert muscle inositol into chiral inositol and improving the conversion rate. However, the conversion rate is low, and the resulting D-chiral inositol and muscle inositol are difficult to separate, resulting in low purity of D-chiral inositol and making it difficult to achieve industrial production. Therefore, there is an urgent need to develop a simple, low-cost, and high-yield method for preparing D-chiral inositol. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a production device for D-chiral inositol that addresses the shortcomings of the existing technology, with a simple production process, low cost, and high yield.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An apparatus for producing D-chiral inositol includes a conversion tank, the outlet of which is connected via a pipeline to a first concentration tank, the outlet of which is connected via a pipeline to a first filter, the liquid phase outlet of which is connected via a pipeline to a second concentration tank, the inlet of which is connected via a pipeline to an ethanol tank, the outlet of which is connected via a pipeline to a second filter, the liquid phase outlet of which is connected via a pipeline to a cooling tank, the outlet of which is connected via a pipeline to a third filter, the solid phase outlet of which is connected via a pipeline to a dissolving tank, the inlet of which is connected via a pipeline to a purified water tank, the outlet of which is connected via a pipeline to a crystallization tank, the outlet of which is connected via a pipeline to a centrifuge, the solid phase outlet of which is connected via a pipeline to a dryer, and the outlet of which is connected via a pipeline to a finished product tank.

[0007] As an improved technical solution, the outlet of the conversion liquid tank is connected to an adsorption tank via a pipeline, the inlet of the adsorption tank is connected to a diatomaceous earth tank via a pipeline, the outlet of the adsorption tank is connected to a fourth filter via a pipeline, and the liquid phase outlet of the fourth filter is connected to the first concentration tank via a pipeline.

[0008] As an improved technical solution, the liquid phase outlet of the first filter is connected to an ultrafiltration membrane device via a pipeline, and the clear liquid outlet of the ultrafiltration membrane device is connected to the first concentration tank via a pipeline.

[0009] The ultrafiltration membrane device has a molecular weight cutoff of 2500-5000 Da.

[0010] As an improved technical solution, the clear liquid outlet of the ultrafiltration membrane device is connected to a cation exchange resin column via a pipeline, and the outlet of the cation exchange resin column is connected to the first concentration tank via a pipeline.

[0011] The inlet of the cation exchange resin column is connected to a hydrochloric acid solution tank via a pipe.

[0012] As an improved technical solution, the outlet of the cation exchange resin column is connected to an anion exchange resin column via a pipeline, and the outlet of the anion exchange resin column is connected to the first concentration tank via a pipeline.

[0013] The inlet of the anion exchange resin column is connected to a sodium hydroxide solution tank via a pipe.

[0014] As an improved technical solution, the outlet of the conversion liquid tank is connected to a nanofiltration membrane device via a pipeline, and the outlet of the nanofiltration membrane device is connected to the first concentration tank via a pipeline.

[0015] The nanofiltration membrane device has a molecular weight cutoff of 200-250 Da.

[0016] As a preferred technical solution, the solid phase outlet of the first filter is connected to a muscle inositol recovery tank via a pipeline.

[0017] As a preferred technical solution, the liquid phase outlet of the third filter is connected to a distillation tank via a pipeline, the top gas phase outlet of the distillation tank is connected to an ethanol recovery tank via a pipeline, and the outlet of the ethanol recovery tank is connected to the ethanol tank via a pipeline.

[0018] As a preferred technical solution, the outlet of the dissolving tank is connected to a decolorizing tank via a pipeline, the inlet of the decolorizing tank is connected to an activated carbon tank via a pipeline, the outlet of the decolorizing tank is connected to a fifth filter via a pipeline, and the liquid phase outlet of the fifth filter is connected to the crystallizing tank via a pipeline.

[0019] As a preferred technical solution, the liquid phase outlet of the centrifuge is connected to a mother liquor tank via a pipeline, and the outlet of the mother liquor tank is connected to the second concentration tank via a pipeline.

[0020] Due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] This invention relates to a production apparatus for D-chiral inositol, comprising a conversion liquid tank, an outlet of which is connected via a pipeline to a first concentration tank, an outlet of which is connected via a first filter, a liquid outlet of which is connected via a pipeline to a second concentration tank, an inlet of which is connected via a pipeline to an ethanol tank, an outlet of which is connected via a pipeline to a second filter, a liquid outlet of which is connected via a pipeline to a cooling tank, an outlet of which is connected via a pipeline to a third filter, a solid outlet of which is connected via a pipeline to a dissolving tank, an inlet of which is connected via a pipeline to a purified water tank, an outlet of which is connected via a pipeline to a crystallization tank, an outlet of which is connected via a pipeline to a centrifuge, a solid outlet of which is connected via a pipeline to a dryer, and an outlet of which is connected via a pipeline to a finished product tank. The first concentration tank performs preliminary concentration of the conversion liquid, reducing the liquid volume for subsequent processing and improving processing efficiency. The first filter separates solid impurities from the concentrated liquid, ensuring the smooth operation of subsequent processes. Through a two-stage concentration process using a first and second concentration tank, the concentration of D-chiral inositol in the solution is gradually increased, while some solvent and low-boiling-point impurities are removed. Combined with multiple filtration processes using a first, second, and third filter, solid impurities and suspended solids generated at different stages are removed. This combination of multi-stage concentration and filtration effectively removes various impurities from the conversion solution, gradually improving the purity of D-chiral inositol and resulting in a higher-quality final product that meets market demand for high-quality D-chiral inositol. Ethanol, a commonly used organic solvent, can alter the polarity and solubility of a solution. In the production of D-chiral inositol, the addition of ethanol helps adjust the solution system, promotes the separation of the target product from impurities, and improves the recovery rate and purity of D-chiral inositol. Furthermore, the volatility and solubility of ethanol make it easier to remove and recycle in subsequent concentration and filtration processes, reducing production costs and improving production efficiency.

[0022] The outlet of the conversion liquid tank of this invention is connected to an adsorption tank via a pipeline. The inlet of the adsorption tank is connected to a diatomaceous earth tank via a pipeline. The outlet of the adsorption tank is connected to a fourth filter via a pipeline. The liquid phase outlet of the fourth filter is connected to the first concentration tank via a pipeline. In the production process of D-chiral inositol, the conversion liquid often contains impurities such as pigments and colloids. If these impurities are not removed in time, they will affect the purity and quality of subsequent products. Diatomaceous earth has excellent adsorption properties. By adding diatomaceous earth to the adsorption tank, these impurities in the conversion liquid can be effectively adsorbed. After adsorption treatment, solid-liquid separation is performed through the fourth filter, which significantly reduces the impurity content of the liquid entering the first concentration tank. This improves the efficiency of subsequent concentration and purification steps, ultimately significantly improving the purity of the D-chiral inositol product and ensuring that the product quality meets high standards.

[0023] The liquid outlet of the first filter is connected to an ultrafiltration membrane device via a pipeline, and the clarified liquid outlet of the ultrafiltration membrane device is connected to the first concentration tank via a pipeline. The ultrafiltration membrane device has a molecular weight cutoff of 2500-5000 Da. The ultrafiltration membrane device can retain larger molecular weight impurities in the conversion solution, such as large protein molecules and polysaccharides, according to the set molecular weight cutoff, allowing only small molecules that meet the requirements to pass through. In the production of D-chiral inositol, these large molecular impurities not only affect product purity but may also clog equipment pipelines during subsequent processing, affecting the smooth operation of the production process. Through the treatment of the ultrafiltration membrane device, large molecular impurities are effectively removed, making the liquid entering the first concentration tank purer, improving concentration efficiency, reducing equipment maintenance costs, and further ensuring the purity and quality stability of the product.

[0024] The clarified liquid outlet of the ultrafiltration membrane device is connected to a cation exchange resin column via a pipeline, and the outlet of the cation exchange resin column is connected to the first concentration tank via a pipeline; the inlet of the cation exchange resin column is connected to a hydrochloric acid solution tank via a pipeline. Various cationic impurities, such as metal ions, may be present in the D-chiral inositol conversion solution, which can adversely affect the quality and performance of the product. The cation exchange resin column utilizes the principle of ion exchange, regenerating and activating the resin with hydrochloric acid solution, exchanging and adsorbing cationic impurities in the clarified liquid onto the resin, thereby removing cationic impurities from the liquid. After treatment by the cation exchange resin column, the content of cationic impurities in the liquid entering the first concentration tank is significantly reduced, effectively improving the purity of the product and making the D-chiral inositol product more chemically stable, meeting the requirements of higher quality standards.

[0025] The outlet of the cation exchange resin column is connected to an anion exchange resin column via a pipeline, and the outlet of the anion exchange resin column is connected to the first concentration tank via a pipeline; the inlet of the anion exchange resin column is connected to a sodium hydroxide solution tank via a pipeline. After removing cationic impurities, anionic impurities, such as chloride ions and sulfate ions, may still exist in the conversion solution. Under the action of sodium hydroxide solution, the anion exchange resin column can adsorb and remove anionic impurities in the liquid through an ion exchange process. Through the dual treatment of the cation exchange resin column and the anion exchange resin column, comprehensive removal of cationic and anionic impurities in the conversion solution is achieved, greatly improving the purity and quality of the D-chiral inositol product, enabling the product to perform better in various application scenarios, while also reducing the corrosion of subsequent production equipment by impurities and extending the service life of the equipment.

[0026] The outlet of the conversion liquid tank is connected to a nanofiltration membrane device via a pipeline, and the outlet of the nanofiltration membrane device is connected to the first concentration tank via a pipeline. The nanofiltration membrane device has a molecular weight cutoff of 200-250 Da. The nanofiltration membrane device has high separation accuracy; its set molecular weight cutoff can effectively retain large-molecule substances in the conversion liquid that are not desired, while allowing target small molecules such as D-chiral inositol to pass through. Compared with traditional separation methods, the nanofiltration membrane device can separate impurities more accurately, reduce interference from impurities in subsequent processing, and improve the recovery rate and purity of D-chiral inositol. In addition, the application of the nanofiltration membrane device can simplify the production process, reduce energy consumption, and improve production efficiency, resulting in good economic and environmental benefits.

[0027] The solid phase outlet of the first filter is connected to a muscle inositol recovery tank via a pipeline. During the production of D-chiral inositol, the solid phase separated by the first filter often contains a certain amount of muscle inositol. Muscle inositol is also a substance with economic value. By connecting the solid phase outlet of the first filter to the muscle inositol recovery tank, the muscle inositol in these solid phases can be recovered and reused. This not only improves the utilization rate of raw materials, reduces resource waste, and lowers production costs, but also increases the economic benefits of the enterprise, maximizing resource utilization and aligning with the concept of sustainable development.

[0028] The liquid phase outlet of the third filter is connected to a distillation tank via a pipeline. The top gas phase outlet of the distillation tank is connected to an ethanol recovery tank via a pipeline. The outlet of the ethanol recovery tank is connected to the ethanol tank via a pipeline. In the production of D-chiral inositol, ethanol is used extensively as a common solvent. The liquid phase of the third filter contains a certain amount of ethanol. By introducing it into the distillation tank for distillation, the ethanol is separated into a gaseous form using the difference in boiling points between ethanol and other substances. This gaseous ethanol is then collected and stored in the ethanol recovery tank and finally returned to the ethanol tank for reuse in production. This method of ethanol recovery and reuse significantly reduces ethanol consumption, lowers production costs, and also reduces ethanol emissions, mitigating environmental pollution and demonstrating significant economic and environmental benefits.

[0029] The outlet of the dissolving tank is connected to a decolorizing tank via a pipeline. The inlet of the decolorizing tank is connected to an activated carbon tank via a pipeline. The outlet of the decolorizing tank is connected to a fifth filter via a pipeline. The liquid phase outlet of the fifth filter is connected to the crystallization tank via a pipeline. During the production of D-chiral inositol, even after the preceding series of treatments, some pigments may still remain in the solution, affecting the product's appearance and quality. Activated carbon has a strong ability to adsorb pigments; by adding activated carbon to the decolorizing tank, the pigments in the solution exiting the dissolving tank can be effectively adsorbed. After decolorization, solid-liquid separation is performed through the fifth filter, making the solution entering the crystallization tank purer. This ensures that the crystallized D-chiral inositol product has a good appearance and color, improving the product's market competitiveness and meeting customer requirements for product appearance quality.

[0030] The liquid outlet of the centrifuge is connected to a mother liquor tank via a pipeline, and the outlet of the mother liquor tank is connected to a second concentration tank via a pipeline. The mother liquor separated by the centrifuge still contains a certain amount of D-chiral inositol and other useful components. Collecting the mother liquor in the mother liquor tank and returning it to the second concentration tank for further processing allows for the recovery and reuse of these residual D-chiral inositol components, improving product yield, reducing raw material waste, and lowering production costs. Simultaneously, this recycling method reduces the environmental impact of mother liquor discharge, maximizing resource utilization and achieving a greener production process. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0033] The components are as follows: 1. Conversion liquid tank; 2. First concentration tank; 3. First filter; 4. Second concentration tank; 5. Ethanol tank; 6. Second filter; 7. Cooling tank; 8. Third filter; 9. Dissolving tank; 10. Purified water tank; 11. Crystallization tank; 12. Centrifuge; 13. Dryer; 14. Finished product tank; 15. Adsorption tank; 16. Diatomaceous earth tank; 17. Fourth filter; 18. Ultrafiltration membrane device; 19. Cation exchange resin column; 20. Hydrochloric acid solution tank; 21. Anion exchange resin column; 22. Sodium hydroxide solution tank; 23. Nanofiltration membrane device; 24. Muscle inositol recovery tank; 25. Distillation tank; 26. Ethanol recovery tank; 27. Decolorization tank; 28. Activated carbon tank; 29. ​​Fifth filter; 30. Mother liquor tank. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] like Figure 1 As shown, a production apparatus for D-chiral inositol includes a conversion tank 1, the outlet of which is connected to a first concentration tank 2 via a pipeline, the outlet of which is connected to a first filter 3 via a pipeline, the liquid phase outlet of which is connected to a second concentration tank 4 via a pipeline, the inlet of which is connected to an ethanol tank 5 via a pipeline, the outlet of which is connected to a second filter 6 via a pipeline, the liquid phase outlet of which is connected to a cooling tank 7 via a pipeline, the outlet of which is connected to a third filter 8 via a pipeline, the solid phase outlet of which is connected to a dissolving tank 9 via a pipeline, the inlet of which is connected to a purified water tank 10 via a pipeline, the outlet of which is connected to a crystallization tank 11 via a pipeline, the outlet of which is connected to a centrifuge 12 via a pipeline, the solid phase outlet of which is connected to a dryer 13 via a pipeline, and the outlet of which is connected to a finished product tank 14 via a pipeline. The first concentration tank 2 performs preliminary concentration of the conversion liquid, reducing the liquid volume for subsequent processing and improving processing efficiency. The first filter 3 separates solid impurities from the concentrated liquid, ensuring the smooth operation of subsequent processes. Through the two-stage concentration operation of the first concentration tank 2 and the second concentration tank 4, the concentration of D-chiral inositol in the solution is gradually increased, while removing some solvent and low-boiling-point impurities. Combined with multiple filtrations by the first filter 3, the second filter 6, and the third filter 8, solid impurities and suspended solids generated at different stages are removed respectively. The combination of multi-stage concentration and filtration effectively removes various impurities from the conversion liquid, gradually improving the purity of D-chiral inositol, resulting in a higher quality final product that meets market demand for high-quality D-chiral inositol. Ethanol, as a commonly used organic solvent, can alter the polarity and solubility of a solution. In the production process of D-chiral inositol, the addition of ethanol helps adjust the solution system, promotes the separation of the target product from impurities, and improves the recovery rate and purity of D-chiral inositol. Meanwhile, the volatility and solubility of ethanol make it easier to remove and recycle in subsequent concentration, filtration and other processes, reducing production costs and improving production efficiency.

[0036] The outlet of the conversion liquid tank 1 of this invention is connected to an adsorption tank 15 via a pipeline. The inlet of the adsorption tank 15 is connected to a diatomaceous earth tank 16 via a pipeline. The outlet of the adsorption tank 15 is connected to a fourth filter 17 via a pipeline. The liquid phase outlet of the fourth filter 17 is connected to the first concentration tank 2 via a pipeline. In the production process of D-chiral inositol, the conversion liquid often contains impurities such as pigments and colloids. If these impurities are not removed in time, they will affect the purity and quality of subsequent products. Diatomaceous earth has excellent adsorption properties. By adding diatomaceous earth to the adsorption tank 15, these impurities in the conversion liquid can be effectively adsorbed. After adsorption treatment, solid-liquid separation is performed through the fourth filter 17, which significantly reduces the impurity content of the liquid entering the first concentration tank 2, thereby improving the efficiency of subsequent concentration and purification steps, ultimately significantly improving the purity of the D-chiral inositol product and ensuring that the product quality reaches a high standard.

[0037] The liquid outlet of the first filter 3 is connected to an ultrafiltration membrane device 18 via a pipeline, and the clarified liquid outlet of the ultrafiltration membrane device 18 is connected to the first concentration tank 2 via a pipeline. The ultrafiltration membrane device 18 has a molecular weight cutoff of 2500-5000 Da. The ultrafiltration membrane device 18 can retain larger molecular weight impurities in the conversion liquid, such as large protein molecules and polysaccharides, according to the set molecular weight cutoff, allowing only small molecules that meet the requirements to pass through. In the production of D-chiral inositol, these large molecular impurities not only affect product purity but may also clog equipment pipelines during subsequent processing, affecting the smooth operation of the production process. Through the treatment of the ultrafiltration membrane device 18, large molecular impurities are effectively removed, making the liquid entering the first concentration tank 2 purer, improving concentration efficiency, reducing equipment maintenance costs, and further ensuring the purity and quality stability of the product.

[0038] The clarified liquid outlet of the ultrafiltration membrane device 18 is connected to a cation exchange resin column 19 via a pipeline, and the outlet of the cation exchange resin column 19 is connected to the first concentration tank 2 via a pipeline; the inlet of the cation exchange resin column 19 is connected to a hydrochloric acid solution tank 20 via a pipeline. Various cationic impurities, such as metal ions, may exist in the D-chiral inositol conversion solution, which can adversely affect the quality and performance of the product. The cation exchange resin column 19 utilizes the principle of ion exchange, regenerating and activating the resin with hydrochloric acid solution, exchanging and adsorbing cationic impurities in the clarified liquid onto the resin, thereby removing cationic impurities from the liquid. After treatment by the cation exchange resin column 19, the content of cationic impurities in the liquid entering the first concentration tank 2 is significantly reduced, effectively improving the purity of the product and making the D-chiral inositol product more chemically stable, meeting the requirements of higher quality standards.

[0039] The outlet of the cation exchange resin column 19 is connected to the anion exchange resin column 21 via a pipeline, and the outlet of the anion exchange resin column 21 is connected to the first concentration tank 2 via a pipeline; the inlet of the anion exchange resin column 21 is connected to the sodium hydroxide solution tank 22 via a pipeline. After removing cationic impurities, anionic impurities, such as chloride ions and sulfate ions, may still exist in the conversion solution. Under the action of sodium hydroxide solution, the anion exchange resin column 21 can adsorb and remove anionic impurities in the liquid through an ion exchange process. Through the dual treatment of the cation exchange resin column 19 and the anion exchange resin column 21, comprehensive removal of cationic and anionic impurities in the conversion solution is achieved, greatly improving the purity and quality of the D-chiral inositol product, enabling the product to perform better in various application scenarios, while also reducing the corrosion of subsequent production equipment by impurities and extending the service life of the equipment.

[0040] The outlet of the conversion liquid tank 1 is connected to a nanofiltration membrane device 23 via a pipeline, and the outlet of the nanofiltration membrane device 23 is connected to the first concentration tank 2 via a pipeline. The nanofiltration membrane device 23 has a molecular weight cutoff of 200-250 Da. The nanofiltration membrane device 23 has high separation accuracy; its set molecular weight cutoff can effectively retain large-molecule substances in the conversion liquid that are not desired, while allowing target small molecules such as D-chiral inositol to pass through. Compared with traditional separation methods, the nanofiltration membrane device 23 can separate impurities more accurately, reduce the interference of impurities in subsequent processing, and improve the recovery rate and purity of D-chiral inositol. In addition, the application of the nanofiltration membrane device 23 can simplify the production process, reduce energy consumption, and improve production efficiency, resulting in good economic and environmental benefits.

[0041] The solid phase outlet of the first filter 3 is connected to a muscle inositol recovery tank 24 via a pipeline. During the production of D-chiral inositol, the solid phase separated by the first filter 3 often contains a certain amount of muscle inositol. Muscle inositol is also a substance with economic value. By connecting the solid phase outlet of the first filter 3 to the muscle inositol recovery tank 24, and considering that the filter cake obtained from the solid phase outlet of the second filter 6 contains muscle inositol and a small amount of D-chiral inositol, it can be recovered and reconstituted. This allows for the recovery and reuse of muscle inositol from these solid phase materials. This not only improves the utilization rate of raw materials, reduces resource waste, and lowers production costs, but also increases the economic benefits of the enterprise, maximizing resource utilization and aligning with the concept of sustainable development.

[0042] The liquid phase outlet of the third filter 8 is connected to a distillation tank 25 via a pipeline. The top gas phase outlet of the distillation tank 25 is connected to an ethanol recovery tank 26 via a pipeline. The outlet of the ethanol recovery tank 26 is connected to the ethanol tank 5 via a pipeline. In the production process of D-chiral inositol, ethanol is used extensively as a commonly used solvent. The liquid phase of the third filter 8 contains a certain amount of ethanol. By introducing it into the distillation tank 25 for distillation, the ethanol is separated into a gaseous form by utilizing the difference in boiling points between ethanol and other substances. This gaseous ethanol is then collected and stored in the ethanol recovery tank 26 and finally returned to the ethanol tank 5 for reuse in production. This method of ethanol recovery and reuse significantly reduces ethanol consumption, lowers production costs, and also reduces ethanol emissions, mitigating environmental pollution and demonstrating significant economic and environmental benefits.

[0043] The outlet of the dissolving tank 9 is connected to a decolorizing tank 27 via a pipeline. The inlet of the decolorizing tank 27 is connected to an activated carbon tank 28 via a pipeline. The outlet of the decolorizing tank 27 is connected to a fifth filter 29 via a pipeline. The liquid phase outlet of the fifth filter 29 is connected to the crystallization tank 11 via a pipeline. During the production of D-chiral inositol, even after the preceding series of treatments, some pigments may still remain in the solution, affecting the appearance and quality of the product. Activated carbon has a strong ability to adsorb pigments; by adding activated carbon to the decolorizing tank 27, the pigments in the solution exiting the dissolving tank 9 can be effectively adsorbed. After decolorization, solid-liquid separation is performed through the fifth filter 29, making the solution entering the crystallization tank 11 purer. This ensures that the crystallized D-chiral inositol product has a good appearance and color, improving the product's market competitiveness and meeting customer requirements for product appearance quality.

[0044] The liquid outlet of the centrifuge 12 is connected to a mother liquor tank 30 via a pipeline, and the outlet of the mother liquor tank 30 is connected to the second concentration tank 4 via a pipeline. The mother liquor separated by the centrifuge 12 still contains a certain amount of D-chiral inositol and other useful components. Collecting the mother liquor in the mother liquor tank 30 and returning it to the second concentration tank 4 for further processing allows for the recovery and reuse of these residual D-chiral inositol components, improving product yield, reducing raw material waste, and lowering production costs. Simultaneously, this recycling method reduces the environmental pressure caused by mother liquor discharge, achieving maximum resource utilization and a greener production process.

[0045] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An apparatus for producing D-chiral inositol, characterized in that: The system includes a conversion liquid tank, the outlet of which is connected via a pipeline to a first concentration tank. The outlet of the first concentration tank is connected via a pipeline to a first filter. The liquid phase outlet of the first filter is connected via a pipeline to a second concentration tank. The inlet of the second concentration tank is connected via a pipeline to an ethanol tank. The outlet of the second concentration tank is connected via a pipeline to a second filter. The liquid phase outlet of the second filter is connected via a pipeline to a cooling tank. The outlet of the cooling tank is connected via a pipeline to a third filter. The solid phase outlet of the third filter is connected via a pipeline to a dissolving tank. The inlet of the dissolving tank is connected via a pipeline to a purified water tank. The outlet of the dissolving tank is connected via a pipeline to a crystallization tank. The outlet of the crystallization tank is connected via a pipeline to a centrifuge. The solid phase outlet of the centrifuge is connected via a pipeline to a dryer. The outlet of the dryer is connected via a pipeline to a finished product tank.

2. The apparatus for producing D-chiro-inositol according to claim 1, wherein: The outlet of the conversion liquid tank is connected to an adsorption tank via a pipeline, the inlet of the adsorption tank is connected to a diatomaceous earth tank via a pipeline, the outlet of the adsorption tank is connected to a fourth filter via a pipeline, and the liquid phase outlet of the fourth filter is connected to the first concentration tank via a pipeline.

3. The apparatus for producing D-chiro-inositol according to claim 2, wherein: The liquid phase outlet of the first filter is connected to an ultrafiltration membrane device via a pipeline, and the clear liquid outlet of the ultrafiltration membrane device is connected to the first concentration tank via a pipeline. The ultrafiltration membrane device has a molecular weight cutoff of 2500-5000 Da.

4. The apparatus for producing D-chiro-inositol according to claim 3, wherein: The clear liquid outlet of the ultrafiltration membrane device is connected to a cation exchange resin column via a pipeline, and the outlet of the cation exchange resin column is connected to the first concentration tank via a pipeline. The inlet of the cation exchange resin column is connected to a hydrochloric acid solution tank via a pipe.

5. The apparatus for producing D-chiro-inositol according to claim 4, wherein: The outlet of the cation exchange resin column is connected to an anion exchange resin column via a pipeline, and the outlet of the anion exchange resin column is connected to the first concentration tank via a pipeline. The inlet of the anion exchange resin column is connected to a sodium hydroxide solution tank via a pipe.

6. The apparatus for producing D-chiro-inositol according to claim 1, wherein: The outlet of the conversion liquid tank is connected to a nanofiltration membrane device via a pipeline, and the outlet of the nanofiltration membrane device is connected to the first concentration tank via a pipeline. The nanofiltration membrane device has a molecular weight cutoff of 200-250 Da.

7. The apparatus for producing D-chiro-inositol according to claim 1, wherein: The solid phase outlet of the first filter is connected to a muscle inositol recovery tank via a pipeline.

8. The apparatus for producing D-chiro-inositol according to claim 1, wherein: The liquid phase outlet of the third filter is connected to a distillation tank via a pipeline, and the top gas phase outlet of the distillation tank is connected to an ethanol recovery tank via a pipeline. The outlet of the ethanol recovery tank is connected to the ethanol tank via a pipeline.

9. The apparatus for producing D-chiro-inositol according to claim 1, wherein: The outlet of the dissolving tank is connected to a decolorizing tank via a pipeline, the inlet of the decolorizing tank is connected to an activated carbon tank via a pipeline, the outlet of the decolorizing tank is connected to a fifth filter via a pipeline, and the liquid phase outlet of the fifth filter is connected to the crystallizing tank via a pipeline.

10. The apparatus for producing D-chiral inositol as described in claim 1, characterized in that: The liquid phase outlet of the centrifuge is connected to a mother liquor tank via a pipeline, and the outlet of the mother liquor tank is connected to the second concentration tank via a pipeline.

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