Equipment for extracting amino acid from corn steep liquor

Abstract

The utility model discloses equipment for extracting amino acid from corn steep liquor, and relates to the technical field of corn steep liquor treatment, an inlet at the upper end of an extraction tower is communicated with a corn steep liquor tank through a pipeline, and an inlet at the lower end of the extraction tower is communicated with an extraction agent tank through a pipeline; an upper outlet of the extraction tower is communicated with a rectifying tower through a pipeline, and a bottom outlet of the rectifying tower is communicated with an amino acid concentrated solution tank through a rectifying circulating pump. The extraction agent enters from bottom to top from the bottom of the extraction tower, the corn steep liquor enters from top to bottom from the upper part of the extraction tower, after the extraction agent is in contact with the corn steep liquor, amino acid in the corn steep liquor is dissolved in the extraction agent and finally enters the rectifying tower through the feeding pump from the top of the extraction tower, and the extraction agent is evaporated out from the top of the rectifying tower after being heated; the bottom kettle residue of the rectifying tower is the amino acid concentrated solution. The whole technological process is simple, short in period, low in cost and suitable for industrial production.

Description

Technical Field

[0001] The utility model relates to the technical field of corn steep liquor treatment, and particularly relates to a device for extracting amino acids from corn steep liquor. Background Art

[0002] Corn steep liquor is a by-product of corn starch production, with raw materials being corn grits, water, and corn juice. To produce corn starch, corn kernels need to be soaked in sulfurous acid first, and the soaking liquid is concentrated to form a yellowish-brown liquid called corn steep liquor, which contains a large amount of amino acids and other organic salts. Among them, amino acids can regulate physiological functions and maintain normal metabolism in humans, and are essential substances for the human body. In addition, amino acids also have the functions of promoting growth and development, protecting the liver, and enhancing memory.

[0003] Currently, corn steep liquor is mainly used as an organic nitrogen source and growth factor supplier in amino acid fermentation. The biotin and limiting amino acids it is rich in have a great impact on the fermentation of various amino acids. However, the fermentation cycle is generally long, and the control of fermentation parameters is relatively strict. After fermentation, various processes such as sterilization and purification are required, resulting in high production costs. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: aiming at the deficiencies existing in the prior art, to provide a device for extracting amino acids from corn steep liquor, with simple process, short cycle, and low production cost.

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

[0006] A device for extracting amino acids from corn steep liquor, including an extraction tower. The upper inlet of the extraction tower is connected through a pipeline to a corn steep liquor tank, and the lower inlet of the extraction tower is connected through a pipeline to an extractant tank;

[0007] The upper outlet of the extraction tower is connected through a pipeline to a rectification tower, and the bottom outlet of the rectification tower is connected through a rectification circulation pump to an amino acid concentrate tank.

[0008] As an improved technical solution, the top outlet of the rectification tower is connected through a pipeline to a cooler, and the material outlet of the cooler is connected through a pipeline to a recovery tank.

[0009] As an improved technical solution, the outlet of the recovery tank is connected through a pipeline to a recovery circulation pump, and the outlet of the recovery circulation pump is connected through a pipeline to the rectification tower.

[0010] As an improved technical solution, the outlet of the recovery tank is connected through a pipeline to a recovery circulation pump, and the outlet of the recovery circulation pump is connected through a pipeline to the extractant tank.

[0011] As an improved technical solution, the outlet of the rectification circulation pump is connected to the rectification column through a pipeline.

[0012] As an improved technical solution, the outlet of the rectification circulation pump is connected to a heater through a pipeline, and the material outlet of the heater is connected to the rectification column through a pipeline.

[0013] As a preferred technical solution, the bottom material outlet of the extraction column is connected to a liquid crystallization tank for the feed liquid through a pipeline.

[0014] As a preferred technical solution, a stirring shaft is provided in the extraction column, and a plurality of rotary disk sieve plates are provided along the circumferential and axial directions of the stirring shaft.

[0015] As a preferred technical solution, the adjacent upper and lower rotary disk sieve plates are arranged staggeredly along the circumferential direction of the stirring shaft.

[0016] As a preferred technical solution, a plurality of baffle plates are axially provided along the inner wall of the extraction column.

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

[0018] An apparatus for extracting amino acids from corn steep liquor according to the present utility model comprises an extraction column. The upper inlet of the extraction column is connected to a corn steep liquor tank through a pipeline, and the lower inlet of the extraction column is connected to an extractant tank through a pipeline; the upper outlet of the extraction column is connected to a rectification column through a pipeline, and the bottom outlet of the rectification column is connected to an amino acid concentrate tank through a rectification circulation pump. The extractant enters from the bottom of the extraction column from bottom to top, and the corn steep liquor enters from the upper part of the extraction column from top to bottom. After the extractant and the corn steep liquor come into contact, the amino acids in the corn steep liquor are dissolved into the extractant, and finally enter the rectification column from the top of the extraction column through a feed pump. After heating, the extractant is evaporated from the top of the rectification column, and the bottom residue of the rectification column is the amino acid concentrate. The whole technological process is simple, with a short cycle and low cost, and is suitable for industrial production.

[0019] The top outlet of the rectification column of the present utility model is connected to a cooler through a pipeline, and the material outlet of the cooler is connected to a recovery tank through a pipeline. The extractant evaporated from the top of the rectification column is condensed into a liquid by the cooler and then collected in the recovery tank, avoiding waste of raw materials.

[0020] The outlet of the recovery tank is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the rectification column through a pipeline. The material in the recovery tank can re-enter the rectification column for re-rectification, improving the recovery rate of amino acids.

[0021] The outlet of the recovery tank is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the extractant tank through a pipeline. The materials in the recovery tank can be reused for the extraction of corn steep liquor. By repeated utilization, the product yield is increased, and at the same time, the waste of raw materials is reduced.

[0022] The outlet of the rectification circulation pump is connected to the rectification column through a pipeline. By circulating and distilling the materials at the bottom of the rectification column, the separation effect of the extractant and amino acids is better, and the purity of amino acids is improved.

[0023] The outlet of the rectification circulation pump is connected to a heater through a pipeline, and the material outlet of the heater is connected to the rectification column through a pipeline. By preheating the materials at the bottom of the rectification column, it is avoided that the temperature drop during the circulation process causes the out-of-control of the column bottom temperature after entering the rectification column.

[0024] The bottom material outlet of the extraction column is connected to a liquid crystallization tank through a pipeline. The materials at the bottom of the extraction column are lactate salts, which can be used as feed after crystallization, improving the economic benefits.

[0025] A stirring shaft is arranged in the extraction column, and a plurality of rotary disk sieve plates are arranged along the circumferential and axial directions of the stirring shaft. By means of the rotary disk sieve plates, the turbulent flow and mixing are increased, the mixing of the extractant and corn steep liquor is more uniform, and the extraction effect of amino acids is better.

[0026] A plurality of baffle plates are arranged axially along the inner wall of the extraction column, and the baffle plates play a role in deflecting the flow, and the mixing effect of the materials is better.

[0027] The baffle plates and the rotary disk sieve plates are arranged alternately and staggeredly along the axial direction of the stirring shaft, and the rotary disk sieve plates are located between the two baffle plates, and the flow deflection effect is better. Description of the Drawings

[0028] The present utility model will be further described below with reference to the drawings and embodiments.

[0029] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0030] Among them: 1. Extraction column; 2. Corn slurry liquid tank; 3. Extractant tank; 4. Rectification column; 5. Amino acid concentrate tank; 6. Cooler; 7. Recovery tank; 8. Heater; 9. Liquid crystallization tank; 10. Stirring shaft; 11. Rotary disk sieve plate; 12. Baffle plate; 13. Coiled tube condenser; 14. Cloth plate. Detailed Embodiments

[0031] The present utility model will be further elaborated below with reference to the drawings and embodiments.

[0032] As Figure 1As shown in the figure, a device for extracting amino acids from corn steep liquor includes an extraction tower 1. The upper inlet of the extraction tower 1 is connected to a corn slurry tank 2 through a pipeline, and the lower inlet of the extraction tower 1 is connected to an extractant tank 3 through a pipeline; the upper outlet of the extraction tower 1 is connected to a rectification tower 4 through a pipeline, and the bottom outlet of the rectification tower 4 is connected to an amino acid concentrate tank 5 through a rectification circulation pump. The extractant enters from the bottom of the extraction tower 1 from bottom to top, and the corn slurry enters from the upper part of the extraction tower 1 from top to bottom. After the extractant contacts the corn slurry, the amino acids in the corn slurry are dissolved into the extractant and finally enter the rectification tower 4 from the top of the extraction tower 1 through a feeding pump. After heating, the extractant is evaporated from the top of the rectification tower 4, and the bottom residue of the rectification tower 4 is the amino acid concentrate. The whole process is simple, with a short cycle and low cost, suitable for industrial production. A cloth plate 14 is provided at the top of the extraction tower 1, and the corn slurry enters the interior of the extraction tower through the cloth plate 14, with a better mixing effect with the extractant.

[0033] The top outlet of the rectification tower 4 is connected to a cooler 6 through a pipeline, and the material outlet of the cooler 6 is connected to a recovery tank 7 through a pipeline. The extractant distilled from the top of the rectification tower 4 is condensed into a liquid by the cooler 6 and then collected in the recovery tank 7 to avoid waste of raw materials. The cooler 6 in this embodiment is a shell-and-tube cooler 6. In order to enhance the cooling effect, a coil condenser 13 is connected to the outlet of the cooler 6 through a pipeline. Through double cooling, the condensation effect of the material is better.

[0034] The outlet of the recovery tank 7 is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the rectification tower 4 through a pipeline. The material in the recovery tank 7 can re-enter the rectification tower 4 for re-rectification, improving the recovery rate of amino acids.

[0035] The outlet of the recovery tank 7 is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the extractant tank 3 through a pipeline. The material in the recovery tank 7 can be reused for the extraction of corn slurry. Through repeated utilization, the recovery rate of the product is improved, and at the same time, the waste of raw materials is reduced.

[0036] The outlet of the rectification circulation pump is connected to the rectification tower 4 through a pipeline. By circulating and distilling the material at the bottom of the rectification tower 4, the separation effect of the extractant and amino acids is better, improving the purity of amino acids.

[0037] The outlet of the rectification circulation pump is connected to a heater 8 through a pipeline, and the material outlet of the heater 8 is connected to the rectification tower 4 through a pipeline. By preheating the material at the bottom of the rectification tower 4, it is avoided that the temperature drops during its circulation and causes the out-of-control of the tower bottom temperature after entering the rectification tower 4.

[0038] The bottom material outlet of the extraction tower 1 is connected to a liquid material crystallization tank 9 through a pipeline. The material at the bottom of the extraction tower 1 is lactate, which can be used as feed after crystallization, improving the economic benefits.

[0039] A stirring shaft 10 is provided in the extraction tower 1. A plurality of rotary disk sieve plates 11 are provided along the circumferential and axial directions of the stirring shaft 10. The turbulence and mixing are increased through the rotary disk sieve plates 11, the mixing of the extractant and the corn steep liquor is more uniform, and the extraction effect of the amino acid is better.

[0040] A plurality of baffle plates 12 are axially provided along the inner wall of the extraction tower 1. The baffle plates 12 play a role in flow deflection, and the mixing effect of the material is better.

[0041] The baffle plates 12 and the rotary disk sieve plates 11 are alternately arranged in a staggered manner along the axial direction of the stirring shaft 10. The rotary disk sieve plates 11 are located between the two baffle plates 12, and the flow deflection effect is better.

[0042] It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A device for extracting amino acids from corn steep liquor, characterized in that: It comprises an extraction tower, wherein the upper inlet of the extraction tower is connected to a corn slurry tank through a pipeline, and the lower inlet of the extraction tower is connected to an extractant tank through a pipeline; The upper outlet of the extraction tower is connected to the distillation tower through a pipeline, and the bottom outlet of the distillation tower is connected to the amino acid concentrate tank through a distillation circulation pump.

2. The device for extracting amino acids from corn steep liquor as claimed in claim 1, characterized in that: The top outlet of the distillation tower is connected to a cooler through a pipeline, and the material outlet of the cooler is connected to a recovery tank through a pipeline.

3. The device for extracting amino acids from corn steep liquor as claimed in claim 2, characterized in that: The outlet of the recovery tank is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the distillation tower through a pipeline.

4. The device for extracting amino acids from corn steep liquor as claimed in claim 2, characterized in that: The outlet of the recovery tank is connected to a recovery circulation pump through a pipeline, and the outlet of the recovery circulation pump is connected to the extractant tank through a pipeline.

5. The device for extracting amino acids from corn steep liquor as claimed in claim 1, characterized in that: The outlet of the rectification circulation pump is connected to the rectification tower through a pipeline.

6. The device for extracting amino acids from corn steep liquor as claimed in claim 5, characterized in that: The outlet of the distillation circulation pump is connected to a heater through a pipeline, and the material outlet of the heater is connected to the distillation tower through a pipeline.

7. The device for extracting amino acids from corn steep liquor as claimed in claim 1, characterized in that: The material outlet at the bottom of the extraction tower is connected to a feed liquid crystallization tank through a pipeline.

8. The device for extracting amino acids from corn steep liquor as claimed in claim 1, characterized in that: A stirring shaft is arranged in the extraction tower, and a plurality of rotating disc sieve plates are arranged along the circumferential direction and axial direction of the stirring shaft.

9. The device for extracting amino acids from corn steep liquor as claimed in claim 8, characterized in that: A plurality of shielding plates are axially arranged along the inner wall of the extraction tower.

10. The device for extracting amino acids from corn steep liquor as claimed in claim 9, characterized in that: The shielding plates and the rotating disc sieve plates are alternately and staggeredly arranged along the axial direction of the stirring shaft.

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