METHOD FOR SEPARATION OF STARCH-PROTEIN SUSPENSION AND DEVICE FOR SEPARATION OF STARCH-PROTEIN SUSPENSION FOR ITS IMPLEMENTATION Russian patent published in 2025 - IPC C08B30/08 

FIELD: chemistry.

SUBSTANCE: invention relates to production of starch. Method of separation of starch-protein suspension involves at least two stages of separation of starch-protein suspension into thick collection and liquid collection. At first stage of separation of starch-protein suspension containing starch from 11% to 15% and protein from 1% to 1.5%, starch-protein suspension is divided into thick and liquid collection, performing the formation of thick collection and liquid collection, containing protein, with return of liquid collection to the initial suspension, formation of protein suspension containing from 1% to 2% of protein and from 3% to 1% of starch. Further, the thick collection of the first stage, containing starch from 26% to 31%, protein from 1% to 2%, is sent to the second stage of separation of the starch-protein suspension, where it is divided into an upper collection containing protein and a lower collection containing starch and protein. Lower collection is washed with water to obtain a purified suspension containing starch from 37% to 41%, protein from 0.2% to 0.15%. Upper collection is directed in counter-flow to movement of thick collection along multi-cyclones for dilution of thick collection of the second and first stages. At the same time content of protein to starch decreases with each multicyclone in 1.3 times, at the same time total content of protein in lower collection after n-multicyclones corresponds to formula Kpr=Kpr.init/1.3n. Device for separation of starch-protein suspension contains collector with initial starch-protein suspension, collectors with starch-protein suspension and water, collector with end product, units of separation of the first and second stages, connected to each other by pipelines. At that, the unit of the first stage is made of two separators connected in series and a collector. First separator is connected to the gluten thickening line, the second stage unit is made of 8-15 multicyclones connected in series. Multicyclones are arranged inside the microcyclones with the possibility of separating the starch-protein suspension inside the microcyclones into starch and protein. Collector with water is connected through a pump made with possibility of water supply under pressure from 2 kg/cm² to 5 kg/cm², with inlet of the last multicyclone unit of the second stage.

EFFECT: invention makes it possible to efficiently and qualitatively separate the suspension and isolate protein, thereby simultaneously obtaining dry starch with protein content from 0.3% to 0.54% and dry protein with starch content from 33.3% to 66.7%.

15 cl, 2 dwg