DRYING UNIT FOR MATERIALS CONTACT DRYING Russian patent published in 2018 - IPC F26B11/14 

FIELD: construction; technological processes.

SUBSTANCE: invention relates to building materials industry, namely for drying of loose materials – ash, coal, limestone, rock, sand, sawdust, clay, gypsum cooking, etc. For this purpose, drying unit for contact drying of bulk materials, consisting of heat-insulated housing, heat exchangers, heating system, transport system, contains inside hull horizontally mounted multi-tier heat exchangers, consisting of metal -like square boxes filled with loose material and supported by pipes mounted on hull, and sides and bottom of boxes contact channels through which coolant enters from furnace, top of the box is closed with covers made of sheet steel, which with their longitudinal protrusions rest on bottom of pockets filled with ash, installed on both sides of boxes parallel to heat exchangers axis, creating lock between material and flue gases, to move and mix material in boxes, screw-like transportation systems are mounted, which rotate in different directions, ensuring movement of material in boxes in opposite sides and its flow from box of one heat exchanger into box of inferior heat exchanger, flue gases under boxes bottom are divided into three streams along the length of heat exchangers by two limiters.

EFFECT: simplification of construction of transport system of the unit; improvement of service conditions of unit operation, increase in productivity and decrease in specific fuel consumption.

1 cl, 3 dwg