Centrifugal dust separator - with spiral cyclone inlet and spiral guide plates on central dip tube

摘要

A centrifugal separator to remove suspended solids from gases in a cyclone has a tangentially or hyperbolically curved raw gas inlet into the cyclone. Guide plates, fitted to the periphery of the central dip tube, are inclined in the direction of rotation of the raw gas. The combination of the two features avoids turbulences and results in a high separation efficiency. Specifically the cylindrical cyclone casing receives e.g. the flue gases from a wood-fired boiler through a spiral inlet. The central dip tube has on the outside several guide plates which form a radial spiral. Their helix angle can vary from 10-30 deg.