Starch sugar and method for recovering protein in derivative production process thereof

Abstract

The invention relates to starch sugar and a method for recovering protein in a derivative production process thereof. The method adopts the following steps of: (1) slurrying starch, (2) recovering cluster protein through a protein recovery device, (3) recovering protein through an ultrafiltration membrane, and (4) filter-pressing protein concentrated solution through a plate-and-frame filter press to recover protein. According to the method, the recovery rate of the protein is high, the quality of sugar liquor after protein recovery process is good, the burden of subsequent decoloration and desalinization sections is reduced, especially the hybridization operation time is prolonged, the produced hybridization waste water is less, the degree of automation is high, the labor intensity is reduced, the industrial production is easy to realize, the production efficiency is improved, and the service life of membrane equipment can be prolonged.

Description

technical field [0001] The invention relates to a method for recovering protein, in particular to a method for recovering protein in the production process of starch sugar and its derivatives. Background technique [0002] Today, the starch sugar industry has become one of the most popular industries in my country. With the change of people's consumption concept and the improvement of consumption level, as well as the improvement of awareness of the importance of health, the demand for starch sugar is increasing day by day. [0003] In order to improve the comprehensive utilization rate of raw materials, reduce grain consumption, increase the recovery rate of dry matter, and comprehensively utilize waste steam and waste water, the industrial production mode of starch sugar and its derivatives is more in line with low-carbon and green environmental protection requirements. Many manufacturers at home and abroad have begun to pay attention to the comprehensive utilization of st...

AI Technical Summary

Problems solved by technology

[0004] However, limited to the technical level, most manufacturers use the plate and frame filter press technology to recover the protein in the sugar solution. The recovery rate of the protein is low, and the quality of the sugar solution after recovering the protein is poor, which increases the burden on the subsequent section.

There are also a few manufacturers that use membrane equipment to recover protein. Although the quality of the sugar solution after protein recovery is high, the concentration factor of the membrane equipment is greatly reduced because the protein in the liquefied solution has not been pretreated by a box-type protein removal device, resulting in low working efficiency of the membrane equipment. , Moreover, too much protein will cause the membrane core to be clogged and reduce the service life of the membrane filter element; there are very few manufacturers who use plate and frame filter press with membrane equipment for protein recovery in the starch sugar production process, although the quality of the sugar solution after protein recovery is good , The protein recovery rate is high, but the equipment investment is large, the floor area is large, the labor intensity of the workers is high, and the working environment of the workshop is poor