APPARATUS FOR DUST ABSORBING, HEAT RECOVERY AND DUST FRACTIONATING Russian patent published in 2008 - IPC B04C5/20 

FIELD: physics.

SUBSTANCE: apparatus comprises of cylinder-conic body with inlet fitting tangentially located angularly 11°С to horizontal line and outlet fitting connected in alignment. Central part of body contains helical aligned insertion designed as metal plate with inward-bent lower edge forming spiral chute. Exterior of spiral chute is designed as hollow channel with upper and lower faces connected to fittings for heat-carrier or refrigerant supply and abstraction, and lower face of spiral chute is directed through fitting from upper part of apparatus body cone.

EFFECT: improving of decontamination efficiency of dusty gas discharges; separation of dust for coarse and fine grain; heat recovery of dusty gases.

3 dwg