AXIAL CYCLONIC APPARATUS FOR THE ABATEMENT OF PARTICULATE MATTER AND SPARKS FROM A GASEOUS FLOW AND SMOKE SUCTION SYSTEM OF A METALLURGICAL FURNACE PROVIDED WITH SUCH CYCLONIC APPARATUS

摘要

The present invention concerns an axial cyclonic apparatus (1) for the abatement of particulate matter and sparks from a gaseous flow, comprising: - a containment mantle (10) that extends along an axial direction X between an inlet opening (2) and an outlet duct (3); and - a first vaned body (4) which is equipped with a plurality of first vanes (41) and is arranged near said inlet opening (2) coaxially thereto. The first vanes are adapted to give a centrifugal radial component to the incoming axial gaseous flow. The outlet duct extends coaxially at least partially inside the mantle and delimits with an end portion (12) of such mantle a peripheral annular chamber (20) for the interception of the particulate matter which separates itself from the gaseous flow. The peripheral annular chamber is closed downstream in a longitudinal direction and is radially communicating with a particulate collection chamber (21). The containment mantle comprises an axially divergent truncated-cone portion (11) which connects the inlet opening (2) to the end portion (12) of the mantle which externally defines the peripheral annular chamber (20). The divergent truncated-cone portion forms with the axial direction X an angle of divergence δ between 5° and 15°. The first vaned body (4) is arranged at the divergent, truncated-cone portion (11). The first vanes (41) each form an angle of detachment a of between 40° and 50° relative to said axial direction X.