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Process flow of starch sugar processing line
The raw material for syrup production is starch milk, which is made from common starch plants such as corn, wheat, rice and cassava. (Recommended reading potato starch, wheat starch and corn starch pocessing line to find out how starch is produced )
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Detailed introduction of starch sugar processing process
1. Sizing and liquefaction:
Add water to adjust the milled starch to 18Be concentration, 5.6-6.0 PH value, add high-temperature resistant α-amylase, send it to the jet liquefier and add steam to raise the temperature to 100-108 ℃ for starch quality Liquefaction and hydrolysis.
2. Protein filtration:
The dextrin solution qualified for liquefaction and hydrolysis (DE value is about 20) is sent to the plate and frame filter for protein separation and filtration. The separated protein is washed, dried, crushed, sieved, and tested. Pack and store after qualified.
3. Saccharification:
The dextrin hydrolysate after separating the protein is sent to the saccharification tank for saccharification. At this time, after adjusting the temperature to 60°C and the pH value of about 4.2-4.8, add a certain amount of glucoamylase for about 36-50 hours.
4. One-time decolorization:
The saccharification solution with a DE value of 97 or higher is heated to 75°C to inactivate the enzyme, and then added with activated carbon. After 0.5 to 1 hour of adsorption treatment, it is sent to a plate filter for decarbonization and decolorization. The light transmittance must be ≥75%
5. Ion exchange:
Cool the solution after the first desorption to about 40～45℃ and send it to the ion exchange column for anion and cation exchange treatment. At this time, the conductivity of the solution should be less than 20ppm.
6. Pre-evaporation:
Pre-concentrate the separated sugar solution to 45Bx.
7. Isomerization:
Add magnesium sulfate and sodium metabisulfite to the sugar solution with a concentration of 45Bx, adjust the pH to 7.5-8.0 with sodium carbonate and then send it to the isomerization column, adjust the feed flow rate of the isomerization column, and make the outlet fructose content 42-44 about.
8. Secondary ionization:
Cool the solution after the secondary removal to about 30-35℃ and send it to the ion exchange column for anion and cation exchange treatment. At this time, the conductivity of the solution should be less than 15ppm.
9. Secondary decolorization:
Add the isomerized material to activated carbon, and after 0.5 to 1 hour of adsorption treatment, send it to the filter for decarbonization and decolorization. At this time, the light transmittance of the solution should be ≥95%.
10. Evaporation of F42:
Concentrate the solution after the second separation to 71Bx, which is the finished product of F42 fructose syrup; in addition, partially concentrate to 60Bx and send it to chromatographic separation.
11. Chromatographic separation:
F42 fructose syrup passes through the separation tower, glucose and fructose are separated, glucose is sent back to pre-evaporation, fructose is mixed with F42 fructose syrup from the second ionization to 55 and then sent to the next step.
12. Mixed bed:
The mixed F55 syrup enters the mixed bed. At this time, the light transmittance of the solution should be ≥97%, and the conductivity should be less than 15ppm.
13. Evaporation:
Concentrate the F55 fructose syrup after passing through the mixed bed to 77.5Bx, which is the finished product of F55 fructose syrup.
14. Storage and filling:
F42 and F55 are sent to the finished product tank for storage, pumped into the filling tank when necessary, and packed into the packaging container in a quantitative manner.
