METHOD OF COMPLEX PROCESSING OF SOYBEAN SEEDS Russian patent published in 2017 - IPC A23L5/00 

FIELD: agriculture.

SUBSTANCE: method of complex processing of soybean seeds includes drying soybean seeds in a drum dryer at a drying agent temperature of 80…85°C to a humidity of 10…12%; grinding and mechanically pressing the dried seeds in a screw oil press with the output of soybean oil as a finished product and removing the oilcake for grinding in a vibrating mill to the fraction up to 50 mcm or less, mixing the oilcake with water and heating to a temperature of 51…60°C in a container with a vibrating mixer accommodated therein, dividing the obtained mixture on a vibrating screen into the soluble fraction and the insoluble fraction, with subsequently extracting protein from the soluble fraction and removing the insoluble fraction with a humidity of 7…10%, dried in the drum dryer. Additionally, a gravitation cooler for cooling the oilcake with cold air up to 10…15°C before grinding, cyclone separators for removing suspended solid particles contained in the spent drying agent after drying the soybeans and drying the insoluble fraction, as well as in the air after the gravitation cooler, and a vapour-compression heat pump including a compressor, a two-section condenser with sections mounted in parallel, one of which is designed for heating air, and the other one for heating water, a thermoregulating valve and a two-section evaporator, the working and backup sections of which alternately work respectively in the condensation and regeneration modes, a condensate collector, and a receiver are used in the method. The flows of the spent drying agent and the exhaust air after purification from suspended solid particles are combined and fed in the closed cycle mode to cooling and dehumidification to the working evaporator section operating in the condensation mode. Conditioned air obtained after the working evaporator section is divided into two flows, one of which is fed for cooling the oilcake in the gravitation cooler, and the other is removed to the condenser section for heating air and heated to a temperature of 90…95°C, after which it is accumulated in the receiver, and then it is fed in two flows as a drying agent for drying the soybeans and drying the insoluble fraction. Condensate from the condensate collector is heated in the condenser section for heating water, a part of which is fed for mixing with the oilcake into the container with a vibrating mixer accommodated therein, and the other part is sent for defrosting the evaporator section operating in the regeneration mode, with removing the condensate formed to the condensate collector.

EFFECT: method of complex soybean processing allows creating conditions for implementing an energy-efficient technology in the continuous operation mode of main and auxiliary equipment.

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