Arrangement for energy recovery in the pure-gas outlet of a centrifugal separator

Claim 1

In a centrifugal separator which comprises a cylindrical centrifugal chamber having a coaxial raw gas inlet at one end, said inlet having means to cause rotary motion of said gas, and a coaxial pure gas outlet at the other end and said separator is equipped with tangential auxiliary gas inlets in the wall of the centrifugal chamber between said inlet and outlet which inlets are inclined at an angle with respect to the raw gas inlet and includes a particle outlet concentrically surrounding the raw gas inlet, an improved arrangement for the recovery of energy in the pure gas outlet comprising: a. a pure gas outlet tube, having a central axis, said outlet tube being flared out in an approximately conical manner so as to have a narrow open end and a larger open end; with its narrow end coupled to the other end of the cylindrical centrifugal chamber; b. a cylindrical, closed chamber located at said other end of said centrifugal chamber, the larger end of said pure gas outlet tube extends into the closed cylindrical chamber, said chamber including a cover plate spaced from said larger end of said outlet tube; c. a radially extending plate of a diameter smaller than the chamber attached to said larger end of said outlet tube; d. an outlet conduit for the purified gas installed in the cylindrical wall of the ring chamber at approximately the height of said radial plate; and e. an aerodynamic body in the shape of a circular cone making a predetermined angle with its axis protruding from the cover plate into said outlet tube and having its axis coincident with said central axis.