B04C APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- Subclass:
- APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
Description
B04C covers apparatus that exploit natural vortex formation (free vortex flow) to separate or process materials, with cyclones as the primary example. These devices rely on centrifugal forces generated by rotational fluid motion rather than mechanical rotation, making them suitable for gas-solid, liquid-solid, and liquid-liquid separations in industrial applications. Typical technologies include hydrocyclones, dust cyclones, and classifier cyclones used in mining, chemical processing, and environmental control. This subclass excludes mechanically-driven centrifugal equipment covered by B04B.
Scope Notes
Limiting references: Combinations of cyclones with filters, for separating particles from gases or vapours Combinations of cyclones with electrostatic precipitating arrangements Cyclonic type combustion apparatus using fluent fuel Vortex burners e.g. for cyclone-type combustion apparatus
Related Keywords
6 direct subcodes
Child Classifications
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- B04C 1/00 Apparatus in which the main direction of flow follows a flat spiral
- B04C 11/00 Accessories, e.g. safety or control devices, not otherwise provided for
- B04C 3/00 Apparatus in which the axial direction of the vortex remains unchanged
- B04C 5/00 Apparatus in which the axial direction of the vortex is reversed
- B04C 7/00 Apparatus not provided for in group , or; Multiple arrangements not provided for in one of the groups , , or; Combinations of apparatus covered by two or more of the groups , , or
- B04C 9/00 Combinations with other devices, e.g. fans