Device for separating impurities from gases

• US 3,988,132 A
• Filed: 02/20/1975
• Issued: 10/26/1976
• Est. Priority Date: 01/16/1974
• Status: Expired due to Term

• Current Assignee: Stamicarbon B.V. (MAIRE)
• Original Assignee: Stamicarbon B.V. (MAIRE)
• Inventors: Oranje, Leendert
• Primary Examiner(s): Lutter, Frank W.
• Assistant Examiner(s): Lacey, David L.
• Application Number:
  US05/551,293
• Time in Patent Office: 614 Days
• Field of Search: 55/391, 55/392, 55/394, 55/396-399, 55/424-426, 55/449, 55/456, 55/457, 55/458, 55/459 C
• US Class Current: 55/399
• CPC Class Codes: B01D 45/16 generated by the winding course of the gas stream , the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
• CPC Class Codes: B04C 5/02 Construction of inlets by which the vortex flow is generated , e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admissionfluid dynamics in general F15D
• CPC Class Codes: B04C 5/103 Bodies or members, e.g. bulkheads, guides, in the vortex chamber cores B04C5/107

Abstract

This invention relates to a device for separating particles from a gas stream which consists essentially of a cylindrical vessel having a feed pipe connected thereto and intersecting the axis of said vessel; an axial discharge pipe connected to and protruding into said vessel, a sleeve located with some clearance around said discharge pipe and having fixed thereto a plurality of helicoidal first impeller blades so as to cause the gas feed to rotate; means located within said vessel and below said blades to discharge said particles; said device being further characterized by a plurality of spiral second impeller blades extending perpendicularly below and above, and being fixed to, said helicoidal first impeller blades, such that one vertical edge of each of said spiral blades touches said sleeve along, essentially, a straight vertical line, that the other, essentially straight, vertical edge of each spiral blade is located at a distance from the surface of said sleeve which is between 0.33 and 0.90 of the distance between said sleeve and the inner wall of said vessel and that said spiral blades extend to beyond the lower edges of said helicoidal blades.

Claims

1. Device for separating particles from a gas stream which consists essentially of a cylindrical vessel having a feed pipe connected thereto;

an axial discharge pipe connected to and protruding into said vessel, a sleeve located in said vessel around said discharge pipe and spaced therefrom and having fixed thereto helicoidal impeller blade means for causing the gas feed to rotate;

a guide plate extending between said sleeve and the inner surface of said vessel and positioned adjacent said feed pipe so as to guide the feed toward said helicoidal blade means;

means located within said vessel and below said blade means to discharge said particles;

said device further having a plurality of spiral impeller blades extending perpendicularly below and above, and being fixed to, aid helicoidal impeller blade means, such that one vertical edge of each of said spiral blades touches said sleeve along, essentially, a straight vertical line, the other, essentially straight, vertical edge of each spiral blade being located at a distance from the surface of said sleeve which is between 0.33 and 0.90 of the distance between said sleeve and the inner wall of said vessel and that said spiral blades extend to beyond the lower edges of said helicoidal blade means.