Treatment method of gluten water

Abstract

A treatment method of gluten water. The method comprises condensation of gluten water. A method for condensation of gluten water includes the steps of: (1) carrying out a first condensation on gluten water to obtain a first concentrated phase and a first water phase, wherein conditions of the first condensation enable an obtained first water phase to contain less than 0.3 wt% of solid containing protein; (2) carrying out a second condensation on the first concentrated phase to obtain a second concentrated phase and a second water phase, wherein conditions of the second condensation enable the second concentrated phase to contain more than 10 wt% of solid containing protein; and (3) mixing the second water phase with a flocculating agent solution and carrying out air floatation separation on the mixture, wherein the flocculating agent can flocculate and / or precipitate solid containing protein in the second water phase. The second concentrated phase obtained by the method of the invention has similar concentration as that of a concentrate obtained by a prior art; and water quality of the obtained first water phase is obvious superior to that of the water phase obtained by one-time condensation of the prior art. In addition, the method of adding the flocculating agent for air floatation can further separate solid out of the second water phase.

Description

technical field [0001] The invention relates to a treatment method of gluten water. Background technique [0002] The extraction process of starch is the process of separating the main components of corn kernels. There are two types of separation of the components of corn kernels: dry method and wet method, and the main separation operation is grinding. Therefore, there are dry grinding and wet grinding. . [0003] Wet milling is a common process in the current corn starch industry. It is mainly the process of crushing, degerming, fine grinding and sieving of soaked corn to separate the germ and fiber slag to obtain crude starch milk. After the starch is extracted through the grinding and sieving process, the obtained starch milk is still coarse starch milk, which still contains a large amount of protein-containing solids and soluble substances, and the concentration of the powder slurry is relatively thin, which needs to be refined and concentrated to provide for final pro...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the low yield of gluten protein powder obtained by the gluten water treatment method of the prior art and directly recycle the process water to the corn soaking process and germ and fiber washing process, the corn The soaking effect and the defects of product quality deterioration provide a process water that can increase the yield of gluten protein powder and meet the reuse requirements at the same time, that is, the high-quality process water can be directly reused to improve the cycle of process water Treatment of Gluten Water Recycled to Corn Steep Effect for Corn Steep Process and Recycled to Germ, Fiber Wash Process for Starch Wash Effect