Technology for immersing corn in a corn starch production process

Abstract

The invention discloses a technology for immersing corn in a corn starch production process, wherein the technology uses a seven-can immersing method, and comprises a seventh into fragmentation grinding and a first can where new core is added, new-prepared acid is added into a sixth can before into fragmentation grinding, and concentration of sulfurous acid in the new-prepared acid is 0.15-0.17%; before the new-prepared acid is added, a can-inversing method is used, that is opposite to the direction in which the core is fed, a immersion liquid in the first to sixth cans is orderly poured form a can with a bigger sequence number to a can with a smaller sequence number, the liquid is poured until a liquid level that the immersed core is not exposed, and the immersion liquid level in each can is same; and the a total immersion time of the core is controlled in a range from 25h to 29h. The technology for immersing corn in the corn starch production process, strictly controls the immersion concentration and temperature, needs short immersion time, can effectively immerse out effective components in the corn, and has advantages of high yield, low concentration of sulfurous acid, short immersion time, and low power consumption and steam consumption.

Description

technical field [0001] The invention relates to the technical field of corn deep processing, in particular to a corn soaking process in corn starch production. Background technique [0002] In the production process of cornstarch, corn needs to be soaked, and there are mainly two kinds of existing soaking processes: static method and countercurrent method. The static method is to mix the direct soaking liquid with the corn, the soaking process takes a long time, the soaking effect is poor, the yield is low, and the purpose of continuous production cannot be achieved, and it is only suitable for small starch factories. The countercurrent method is a method widely used by major manufacturers. The specific process is to connect a number of soaking tanks in series with pumps and pipelines for countercurrent soaking; the newly input corn is soaked in the soaking solution with the longest soaking time. Soak corn with new sulfurous acid solution, so that the direction of pouring ...

AI Technical Summary

Problems solved by technology

[0003] However, the current corn soaking process has the defects of long soaking time, high concentration of sulfurous acid in the soaking liquid, high power consumption, high steam consumption, low yield, and high production cost At present, the soaking time by countercurrent method is generally more than 50 hours, the concentration of sulfurous acid is as high as 0.2%, and the loss of sulfurous acid is high, which affects the subsequent production process.