Separation method and equipment of protein from starch sugar liquefied solution

Abstract

The invention discloses separation equipment of protein from a starch sugar liquefied solution, which structurally comprises a laminar flow tank system, a protein separation storage tank, and a protein separation sieve which are sequentially connected, wherein the laminar flow tank system comprises 2-6 laminar flow tanks connected in series, and the laminar flow tank at the end is connected with a feed port at the bottom end of the protein separation storage tank through a pipeline; and an overflow port is arranged at the top of the protein separation storage tank, and the protein separation sieve is arranged below the overflow port. The method for separating the protein from the starch sugar liquefied solution by utilizing the equipment comprises the following steps of: preparing a starch pasting liquid; B, treating the starch pasting liquid by the laminar flow tank system to obtain a primary liquefied solution; C, the primary liquefied solution being overflowed from the laminar flow tanks into the protein separation storage tank for layering; and D, the primary liquefied solution being overflowed from the protein separation storage tank to the surface of the protein separation sieve for protein separation. According to the method, a series of targeted treatment of the starch sugar liquefied solution is conducted, and the efficient separation of the protein from the starch sugar liquefied solution is realized by reasonably setting the sieve mesh size and the sieve mesh density of the protein separation sieve.

Description

technical field [0001] The invention relates to the separation and removal technology of protein in starch sugar liquefaction liquid. Background technique [0002] Under the action of α-amylase, the starch is hydrolyzed from a large molecule to a relatively small molecule (dextrin), and the protein in the starch will be freed, because the protein in the liquefaction liquid is basically soluble, and the formed protein is flocculated. shape and high viscosity. At present, most starch sugar manufacturers adopt the method of not treating the liquefied liquid, and then pass through pre-coating vacuum filter or plate and frame filtering equipment to remove it after saccharification. This not only often blocks the liquefied liquid cooling equipment (plate heat exchanger, etc.), shortens the life of the cooling equipment, but also consumes more glucoamylase and filter aids (diatomaceous earth, perlite, activated carbon), etc. There are also manufacturers who use a plate and frame ...

AI Technical Summary

Problems solved by technology

However, since this patent only generally provides a kind of gravity sieve equipment, as for the specific technical information of this gravity sieve, as well as the supporting equipment and its pretreatment process required for the separation of proteins by gravity sieve, they are not disclosed.

However, if there is no proper pretreatment process, so that the starch sugar liquid has a suitable concentration, viscosity, ph value, and suitable stratification, etc., it is impossible to truly realize protein separation by gravity sieve in the industry.

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