摘要 |
A cyclone for treating a gas flow (F) containing dust comprises a cyclo ne chamber (1) of circular cross section and having a vertical axis, and a central tube (7) of circular cross section, which is coaxially arranged in the upper portion of the cyclone chamber (1). An elongate insert element (10), which is vertically inserted in the central tube (7), is so designed and extends in such a manner downwar ds in the central tube (7) from the upper end thereof that a circumferential ga p (17) exists between the insert element (10) and the central tube (7). This gap (1 7) has a preferably constant cross-sectional area which does not increase in the direction of the gas flow. |