Method for preparing starch by soaking corn with desulfurized water in power plant
A technology for soaking corn and desulfurizing water is applied in the field of biological fermentation to achieve the effects of saving raw materials, not producing secondary pollution, and reducing production costs
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Embodiment 1
[0029] Example 1: Such as figure 1 Shown, the method that the desulfurized water of power plant is used for soaking corn to prepare starch, specifically comprises steps as follows:
[0030] (1) Corn purification: The corn is purified to remove impurities such as dust, corn coats, metals and some rotten particles carried in the raw corn;
[0031] (2) Soaking: Soak in the countercurrent way of desulfurized water from the power plant, dilute the desulfurized water of the power plant to a concentration of 0.1%, soak at a temperature of 50°C, and soak for 68 hours, and use process water as the dilution water for the desulfurized water of the power plant;
[0032] (3) Crushing and germ separation: the soaked corn is crushed by a convex tooth mill, and then the germ is separated by a germ separator, squeezed and dried by airflow to obtain dried germ;
[0033] (4) Fine grinding, separation of corn husks and protein: The corn husks separated from the germ are ground to obtain corn s...
Embodiment 2
[0037] Example 2: The method steps of using desulfurized water in power plant to soak corn to prepare starch figure 1 , but the difference from Example 1 is that the desulfurization water concentration of the power plant is 0.2%, the soaking temperature in step (2) is 52°C, the soaking time is 69 hours, and the moisture after soaking the corn reaches 46%, as described in step (3). The feed inlet pressure of the germ separator is 0.8MPa. The pressure of the curved sieve in step (4) is 0.4MPa, the water content of the wet yellow powder after vacuum suction filtration in step (4) is 10%, and the Baume degree of the finished starch milk obtained in step (5) is 22°Be'.
[0038] Starch was prepared by the method described in Example 2, and 10 batches of production tests were continuously carried out in the starch workshop of Linghua Group. The average corn consumption was 391.2t, the average starch production was 270.9t, and the average flour yield was 69.25%. Compared with the p...
Embodiment 3
[0039] Example 3: The method steps of using desulfurized water in power plant to soak corn to prepare starch figure 1 , but the difference from Example 1 is that the desulfurization water concentration of the power plant is 0.15%, the soaking temperature in step (2) is 54°C, the soaking time is 71 hours, and the moisture after soaking the corn reaches 43%, as described in step (3). The feed inlet pressure of the germ separator is 0.5MPa. The pressure of the curved sieve in step (4) is 0.35MPa, the water content of the wet yellow powder after vacuum suction filtration in step (4) is 9%, and the Baume degree of the finished starch milk obtained in step (5) is 20 ° Be'.
[0040] Starch was prepared by the method described in Example 3, and 10 batches of production tests were continuously carried out in the starch workshop of Linghua Group. The average corn consumption was 389.5t, the average starch production was 269.5t, and the average flour extraction rate was 69.19%. Compared...
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