Production device of high-content corn protein

Abstract

The utility model discloses a production device for high-content corn protein. The production device comprises a first plate-and-frame filter, a continuous ion exchange resin system, a first concentration tank, a detoxification tank, a second plate-and-frame filter, a buffer tank, an electrodialysis system, a second concentration tank, a third plate-and-frame filter, a spray dryer and a protein storage tank which are communicated with one another, the detoxification tank is respectively communicated with a sodium hydroxide solution storage tank and an activated carbon storage tank; a glucose oxidase adding opening is also formed in the detoxification tank; the buffer tank is communicated with a hydrochloric acid solution storage tank; a desalination chamber, a salt phase chamber and a pole chamber of the electrodialysis system are respectively communicated with a buffer tank, an aqueous solution storage tank and a sodium sulfate solution storage tank; a desalination chamber of the electrodialysis system is communicated with the second concentration tank; the second concentration tank is also communicated with a calcium hydroxide solution storage tank. The device can be used for effectively removing ash, vomitoxin and fumonisins in the corn soaking water to prepare high-content corn protein, and can be used for recycling inorganic salt and organic salt in the process, so that the economic value of the corn soaking water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protein production, in particular to a production device for high-content corn protein. Background Art

[0002] Corn protein powder has a high protein content and is rich in amino acids. In the feed market where soybean cake and fish meal are in short supply, it can be used to replace protein feeds such as soybean cake and fish meal. Corn protein powder is rich in protein nutrients, does not contain toxic and harmful substances, and does not need to be reprocessed. It can be directly used as a protein raw material and is a feed raw material with high feeding value.

[0003] Corn steep liquor is organic wastewater generated after the processing and utilization of corn kernels, mainly from the wet milling process for extracting corn starch. Corn steep liquor contains rich components such as protein, amino acids, inorganic salts, and phytic acid. Recycling corn steep liquor has great economic value. At present, the effective utilization of corn steep liquor mainly lies in: using the resin method to extract phytic acid from corn steep liquor, and then preparing inositol through the hydrolysis of phytic acid. The protein prepared from the corn steep liquor after phytic acid extraction by the membrane separation method has the following problems: high ash content, and the contents of vomitoxin and fumonisin exceed the national standards, which affects the quality of the protein. Therefore, how to reduce the contents of ash, vomitoxin, and fumonisin in the protein to prepare high-content protein is a problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: aiming at the deficiencies existing in the prior art, to provide a production device for high-content corn protein, which can effectively remove the ash, vomitoxin, and fumonisin in corn steep liquor, prepare high-content corn protein, and can also recycle the inorganic salts and organic salts in the process, improving the economic value of corn steep liquor.

[0005] To solve the above technical problem, the technical solution of the utility model is:

[0006] A production device for high-content corn protein, comprising a connected first plate and frame filter, a continuous ion exchange resin system, a first concentration tank, a detoxification tank, a second plate and frame filter, a buffer tank, an electrodialysis system, a second concentration tank, a third plate and frame filter, a spray dryer, and a protein storage tank;

[0007] The detoxification tank is respectively connected to a sodium hydroxide solution storage tank and an activated carbon storage tank; a glucose oxidase addition port is also provided on the detoxification tank; the buffer tank is connected to a hydrochloric acid solution storage tank; the desalination chamber, the salt phase chamber, and the electrode chamber of the electrodialysis system are respectively connected to the buffer tank, an aqueous solution storage tank, and a sodium sulfate solution storage tank; the desalination chamber of the electrodialysis system is connected to the second concentration tank; the second concentration tank is also connected to a calcium hydroxide solution storage tank.

[0008] Preferably, the continuous ion exchange resin system includes at least two resin columns connected in series, and the resin columns are filled with weakly basic anion resins.

[0009] Preferably, the liquid inlet and the liquid outlet of the continuous ion exchange resin system are respectively communicated with an analytical agent storage tank and a phytic acid solution storage tank.

[0010] Preferably, the salt phase chamber of the electrodialysis system is sequentially communicated with a first drying tank and a potassium sulfate storage tank.

[0011] Preferably, the solid outlet of the third plate and frame filter is sequentially communicated with a second drying tank and a calcium lactate storage tank.

[0012] Preferably, the liquid outlet of the electrode chamber of the electrodialysis system is communicated with a sodium sulfate solution storage tank.

[0013] Preferably, a first pH sensor is provided in the detoxification tank, a first electric valve is provided on the connecting pipe between the sodium hydroxide solution storage tank and the detoxification tank, and the first pH sensor and the first electric valve are interlocked.

[0014] Preferably, a second pH sensor is provided in the buffer tank, a second electric valve is provided on the connecting pipe between the hydrochloric acid solution storage tank and the buffer tank, and the second pH sensor and the second electric valve are interlocked.

[0015] Preferably, a third pH sensor is provided in the second concentration tank, a third electric valve is provided on the connecting pipe between the calcium hydroxide solution storage tank and the second concentration tank, and the third pH sensor and the third electric valve are interlocked.

[0016] Preferably, a stirring device is provided in the detoxification tank, and the stirring device includes a stirring motor, a stirring shaft connected to the output shaft of the stirring motor, and a plurality of anchor-shaped stirring blades provided on the stirring shaft.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are:

[0018] The utility model provides a production device for high-content corn protein, which comprises a connected first plate-and-frame filter, a continuous ion-exchange resin system, a first concentration tank, a detoxification tank, a second plate-and-frame filter, a buffer tank, an electrodialysis system, a second concentration tank, a third plate-and-frame filter, a spray dryer, and a protein storage tank; the detoxification tank is respectively connected to a sodium hydroxide solution storage tank and an activated carbon storage tank; the buffer tank is connected to a hydrochloric acid solution storage tank; the desalination chamber, the salt phase chamber, and the electrode chamber of the electrodialysis system are respectively connected to the buffer tank, an aqueous solution storage tank, and a sodium sulfate solution storage tank; the desalination chamber of the electrodialysis system is connected to the second concentration tank; the second concentration tank is also connected to a calcium hydroxide solution storage tank. After the corn steep water is decontaminated by the first plate-and-frame filter, phytic acid is removed by the continuous ion-exchange resin system, and then it is detoxified in the detoxification tank under the combined action of activated carbon and glucose oxidase, and then filtered by the second plate-and-frame filter. The filtrate is cooled and the pH is adjusted in the buffer tank and then enters the electrodialysis system for desalination. The desalinated desalination liquid enters the second concentration tank for concentration, the pH is adjusted for precipitation treatment, and finally it is filtered by the third plate-and-frame filter. The filtrate is dried by the spray dryer to obtain high-content corn protein, which not only has a low ash content, but also has low vomitoxin and fumonisin contents and high safety.

[0019] The continuous ion-exchange resin system of this device includes at least two resin columns connected in series, and weak-base anion resin is filled in the resin columns; the liquid inlet and the liquid outlet of the continuous ion-exchange resin system are respectively connected to an analytical agent storage tank and a phytic acid solution storage tank. The above settings can better remove phytic acid from corn steep water and recycle it.

[0020] The salt phase chamber of the electrodialysis system of this device is successively connected to a first drying tank and a potassium sulfate storage tank; the solid outlet of the third plate-and-frame filter is successively connected to a second drying tank and a calcium lactate storage tank; the liquid outlet of the electrode chamber of the electrodialysis system is connected to the sodium sulfate solution storage tank. The potassium sulfate and calcium lactate generated during the protein preparation process of this device are recycled and sold as inorganic fertilizer and organic fertilizer respectively, and the sodium sulfate solution is recycled as the electrode liquid, reducing the preparation cost of the product and increasing the economic value of corn steep water.

[0021] A first pH sensor is arranged in the detoxification tank of this device, a first electric valve is arranged on the connecting pipeline between the sodium hydroxide solution storage tank and the detoxification tank, and the first pH sensor and the first electric valve are interlocked. A second pH sensor is arranged in the buffer tank, a second electric valve is arranged on the connecting pipeline between the hydrochloric acid solution storage tank and the buffer tank, and the second pH sensor and the second electric valve are interlocked. A third pH sensor is arranged in the second concentration tank, a third electric valve is arranged on the connecting pipeline between the calcium hydroxide solution storage tank and the second concentration tank, and the third pH sensor and the third electric valve are interlocked. The above settings can better control the conditions for protein preparation, and thus obtain high-content corn protein. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0024] In the figure, 1. First plate-frame filter; 2. Continuous ion-exchange resin system; 3. First concentration tank; 4. Detoxification tank; 5. Second plate-frame filter; 6. Buffer tank; 7. Electrodialysis system; 8. Second concentration tank; 9. Third plate-frame filter; 10. Spray dryer; 11. Protein storage tank; 12. Sodium hydroxide solution storage tank; 13. Activated carbon storage tank; 14. Glucose oxidase addition port; 15. Hydrochloric acid solution storage tank; 16. Aqueous solution storage tank; 17. Sodium sulfate solution storage tank; 18. Calcium hydroxide solution storage tank; 19. Analytic agent storage tank; 20. Phytate solution storage tank; 21. First drying tank; 22. Potassium sulfate storage tank; 23. Second drying tank; 24. Calcium lactate storage tank; 25. First pH sensor; 26. First electric valve; 27. Second pH sensor; 28. Second electric valve; 29. Third pH sensor; 30. Third electric valve; 31. Stirring motor; 32. Stirring shaft; 33. Anchor-type stirring blade. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Embodiment 1

[0027] As Figure 1 shown, a production device for high-content corn protein includes a connected first plate-frame filter 1, a continuous ion-exchange resin system 2, a first concentration tank 3, a detoxification tank 4, a second plate-frame filter 5, a buffer tank 6, an electrodialysis system 7, a second concentration tank 8, a third plate-frame filter 9, a spray dryer 10, and a protein storage tank 11;

[0028] The detoxification tank 4 is respectively connected to a sodium hydroxide solution storage tank 12 and an activated carbon storage tank 13; a glucose oxidase addition port 14 is also provided on the detoxification tank 4; the buffer tank 6 is connected to a hydrochloric acid solution storage tank 15; the desalination chamber, the salt phase chamber and the electrode chamber of the electrodialysis system 7 are respectively connected to the buffer tank 6, an aqueous solution storage tank 16 and a sodium sulfate solution storage tank 17; the desalination chamber of the electrodialysis system 7 is connected to a second concentration tank 8; the second concentration tank 8 is also connected to a calcium hydroxide solution storage tank 18.

[0029] Based on the above device, when using corn steep water to prepare corn protein, the corn steep water is filtered and decontaminated by the first plate and frame filter press 1, and the filtrate enters the continuous ion exchange system for adsorption treatment to remove phytic acid. The effluent enters the first concentration tank 3 for concentration treatment. The concentrated solution after concentration enters the detoxification tank 4. Sodium hydroxide solution is added to the detoxification tank 4 from the sodium hydroxide solution storage tank 12 to adjust the pH of the solution. Then, activated carbon and glucose oxidase are added to the detoxification tank 4 for reaction. After the reaction ends, the liquid in the detoxification tank 4 is filtered by the second plate and frame filter press 5, and the filtrate enters the buffer tank 6 for cooling treatment. Then, a certain amount of hydrochloric acid solution is added to the buffer tank 6 from the hydrochloric acid solution storage tank 15 to adjust the pH of the solution. Then, the filtrate enters the desalination chamber of the electrodialysis system 7, and aqueous solution and sodium sulfate solution are added to the salt phase chamber and the electrode chamber of the electrodialysis system 7 for cyclic desalination. After the desalination ends, the solution in the desalination chamber enters the second concentration tank 8 for concentration. Then, a certain amount of calcium hydroxide solution is added to the second concentration tank 8 to adjust the pH of the solution. The obtained liquid is filtered by the third plate and frame filter press 9, and the filtrate is dried by a spray dryer 10. The obtained corn protein enters the protein storage tank 11.

[0030] Further, in this embodiment, the continuous ion exchange resin system 2 includes at least two resin columns connected in series, and weak base anion resin is filled in the resin columns. The corn steep water after impurity removal is subjected to adsorption treatment through at least two resin columns connected in series, and phytic acid in the corn steep water can be better removed.

[0031] Further, in this embodiment, the inlet and outlet of the continuous ion exchange resin system 2 are respectively connected to a resolving agent storage tank 19 and a phytic acid solution storage tank 20. The continuous ion exchange system adsorbed with phytic acid is resolved by using a resolving agent, and the phytic acid adsorbed on the resin is resolved and recovered.

[0032] Further, in this embodiment, the salt phase chamber of the electrodialysis system 7 is sequentially connected to the first drying tank 21 and the potassium sulfate storage tank 22. The salt phase solution in the electrodialysis system 7 is potassium sulfate solution. After being dried by the first drying tank 21, it enters the potassium sulfate storage tank 22 for recovery and can be used as an inorganic fertilizer. Specifically, the structure of the electrodialysis system can adopt the commonly used structure in the prior art, for example, it can be selected from the experimental electrodialysis system BONA-ED-18 of Shandong Bona Biotechnology Group Co., Ltd.

[0033] Further, in this embodiment, the solid outlet of the third plate and frame filter press 9 is sequentially connected to the second drying tank 23 and the calcium lactate storage tank 24. The filter cake obtained by filtering the third plate and frame filter press 9 is calcium lactate. After being dried by the second drying tank 23, it enters the calcium lactate storage tank 24 for recovery and can be used as an organic fertilizer.

[0034] Further, in this embodiment, the liquid outlet of the electrode chamber of the electrodialysis system 7 is connected to the sodium sulfate solution storage tank 17. The sodium sulfate solution in the electrodialysis desalination process can be recycled after recovery, effectively reducing the preparation cost of corn protein.

[0035] Further, in this embodiment, a first pH sensor 25 is provided in the detoxification tank 4, a first electric valve 26 is provided on the connection pipeline between the sodium hydroxide solution storage tank 12 and the detoxification tank 4, and the first pH sensor 25 and the first electric valve 26 are interlocked; a second pH sensor 27 is provided in the buffer tank 6, a second electric valve 28 is provided on the connection pipeline between the hydrochloric acid solution storage tank 15 and the buffer tank 6, and the second pH sensor 27 and the second electric valve 28 are interlocked; a third pH sensor 29 is provided in the second concentration tank 8, a third electric valve 30 is provided on the connection pipeline between the calcium hydroxide solution storage tank 18 and the second concentration tank 8, and the third pH sensor 29 and the third electric valve 30 are interlocked.

[0036] Further, in this embodiment, a stirring device is provided in the detoxification tank 4. The stirring device includes a stirring motor 31, a stirring shaft 32 connected to the output shaft of the stirring motor 31, and a plurality of anchor-shaped stirring blades 33 provided on the stirring shaft.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A production device for corn protein with high content, characterized in that: It includes a connected first plate-and-frame filter, a continuous ion-exchange resin system, a first concentration tank, a detoxification tank, a second plate-and-frame filter, a buffer tank, an electrodialysis system, a second concentration tank, a third plate-and-frame filter, a spray dryer, and a protein storage tank; The detoxification tank is respectively connected to a sodium hydroxide solution storage tank and an activated carbon storage tank, and a glucose oxidase addition port is also provided on the detoxification tank; the buffer tank is connected to a hydrochloric acid solution storage tank; the desalination chamber, the salt phase chamber, and the electrode chamber of the electrodialysis system are respectively connected to the buffer tank, an aqueous solution storage tank, and a sodium sulfate solution storage tank; the desalination chamber of the electrodialysis system is connected to the second concentration tank; the second concentration tank is also connected to a calcium hydroxide solution storage tank.

2. The production device of a high-content corn protein according to claim 1, wherein: The continuous ion-exchange resin system includes at least two resin columns connected in series, and weak-base anion resin is filled in the resin columns.

3. The production device of a high-content corn protein according to claim 1, characterized in that: The inlet and outlet of the continuous ion-exchange resin system are respectively connected to an analytical agent storage tank and a phytic acid solution storage tank.

4. The production device of a high-content corn protein according to claim 1, characterized in that: The salt phase chamber of the electrodialysis system is sequentially connected to a first drying tank and a potassium sulfate storage tank.

5. The production device of a high-content corn protein according to claim 1, characterized in that: The solid outlet of the third plate-and-frame filter is sequentially connected to a second drying tank and a calcium lactate storage tank.

6. The production device of a high-content corn protein according to claim 1, characterized in that: The outlet of the electrode chamber of the electrodialysis system is connected to the sodium sulfate solution storage tank.

7. The production device of a high-content corn protein according to claim 1, characterized in that: A first pH sensor is provided in the detoxification tank, a first electric valve is provided on the connection pipeline between the sodium hydroxide solution storage tank and the detoxification tank, and the first pH sensor and the first electric valve are interlocked.

8. The production device of a high-content corn protein according to claim 1, characterized in that: A second pH sensor is provided in the buffer tank, a second electric valve is provided on the connection pipeline between the hydrochloric acid solution storage tank and the buffer tank, and the second pH sensor and the second electric valve are interlocked.

9. The production device of a high-content corn protein according to claim 1, characterized in that: A third pH sensor is provided in the second concentration tank, a third electric valve is provided on the connection pipeline between the calcium hydroxide solution storage tank and the second concentration tank, and the third pH sensor and the third electric valve are interlocked.

10. The production device of a high-content corn protein according to claim 1, characterized in that: A stirring device is provided in the detoxification tank, and the stirring device includes a stirring motor, a stirring shaft connected to the output shaft of the stirring motor, and a plurality of anchor-shaped stirring blades provided on the stirring shaft.

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