CYCLONE FOR SEPARATING STICKY PARTICLES FROM GAS STREAMS

• US 20120180662A1
• Filed: 08/04/2010
• Published: 07/19/2012
• Est. Priority Date: 09/21/2009
• Status: Active Grant

• Current Assignee: Outotec Oyj (Metso Outotec Oyj)
• Original Assignee: Outotec Oyj (Metso Outotec Oyj)
• Inventors: Missalla, Michael, Schmitz, Mithat
• Granted Patent: US 8,657,934 B2
• Time in Patent Office: Days
• US Class Current: 95/271
• CPC Class Codes: B04C 5/04 Tangential inlets
• CPC Class Codes: B04C 5/13 formed as a vortex finder and extending into the vortex chamber exits with bulkheads preventing reverse flow vortex B04C3/00; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
• CPC Class Codes: B29B 9/16 Auxiliary treatment of granules

Abstract

A cyclone for separating sticky particles from gas streams includes an inlet duct having an end in a direction of a particle outlet. The end has a flow cross-section including a triangular expansion that is formed laterally by a vertical of a cylindrical outer wall of the cyclone and by art outer boundary of the cyclone. An outer angle of inclination between the vertical and the outer boundary, proceeding from the end of the inlet duct, is reduced from 30° to 0° in a flow direction of gas streams. An immersion tube is disposed eccentrically in a direction of the inlet duct.

Claims

1-5. -5. (canceled)

6. A cyclone for separating sticky particles from gas streams, comprising

an inlet duct having an end in a direction of a particle outlet, the end having a flow cross-section including a triangular expansion that is formed laterally by a vertical of a cylindrical outer wall of the cyclone and by an outer boundary of the cyclone, an outer angle of inclination between the vertical and the outer boundary, proceeding from the end of the inlet duct, being reduced from 30°

to 0°

in a flow direction of gas streams; and

an immersion tube disposed eccentrically in a direction of the inlet duct.

7. The cyclone according to claim 6, wherein the inlet duct is disposed with an angle of inclination in the direction of the particle outlet between 10°

and 45°

.

8. The cyclone according to claim 7, wherein an inner wall of the cyclone includes a non-stick coating.

9. The cyclone according to claim 6, wherein an inner wall of the cyclone includes a non-stick coating.

10. A method of using a cyclone for separating sticky particles from gas streams, comprising:

providing an inlet duct having an end in a direction of a particle outlet, the end having a flow cross-section including a triangular expansion that is formed laterally by a vertical of a cylindrical outer wall of the cyclone and by an outer boundary of the cyclone, an outer angle of inclination between the vertical and the outer boundary, proceeding from the end of the inlet duct, being reduced from 30°

to 0°

in a flow direction of gas streams;

providing an immersion tube disposed eccentrically in a direction of the inlet duct; and

providing the partly molten particles to the inlet duct so as separate the partly molten particles from a gas stream.