METHOD FOR FREEZE-DRYING OF LUMPY FOOD PRODUCTS AND FEEDSTUFFS Russian patent published in 2016 - IPC F26B5/06 F26B3/20 

FIELD: food industry.

SUBSTANCE: present invention relates to drying equipment and can be used in food and feedstuff industry for drying plant and animal products. Method for freeze-drying large-sized products and feedstuffs includes heating a freeze-drying chamber, evacuating air with a pump, drying and draining condensate. Freeze-drying is carried out in two independently operating freeze-drying chambers, isolated from each other by a partition; steam with the temperature of 110 to 230 °C. is fed from five sides into a closed heating system made in the form of a heating jacket. Unloading of each chamber is performed when humidity reaches the preset value at continuous operation of the unit. To reduce heat losses freeze-drying chamber is covered with heat-insulating material.

EFFECT: use of the disclosed method widens the range and allows to increase particle size (pieces) of products and feedstuffs, ensures uniform heating of processed products throughout the volume of the freeze-drying chamber working at its full capacity, reduces specific energy consumption and processing times.

1 cl, 1 dwg