Cyclone separator

The invention is related to a cyclone separator (1) for particle collection from a gas stream containing entrained solid particles, said cyclone separator (1) comprising: - a cylindrical-shaped body portion (3), - an inlet duct (2) having an intrados face (2a) and an extrados face (2b), and which is connected to the body portion (3), - a gas outlet tube (4) connected to the body portion (3) at its upper end, characterized in that: - the ratio (d/D) of the distance (d) between the parallel to the extrados face (2b) dropped from the tip (T) of the cyclone separator (1) and the closest point of the gas outlet tube (4) to the internal diameter (D) of the body portion (3) is superior or equal to 0.1, said distance (d) being measured at the lower extremity (4a) of the gas outlet tube (4), - the ratio (s/S) of the inlet duct area (s), measured at the tip (T) of the cyclone separator (1) and perpendicularly to the extrados face (2b), to the cross-sectional area (S) of the body portion (3), is comprised between 0.24 and 0.32, and - the ratio (h/w) of the height (h) of the inlet duct (3) to the width (w) of the inlet duct (2) at the tip (T) of the cyclone separator (1) does not exceed 4.