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US 4,988,289 AGranted
Reaction furnace
AssigneeCustom Equipment Corporation
InventorRobert G. Coucher
Life of this patent
Estimating the term…
Abstract
A reaction furnace includes a rotating core within a heated shell, the core and shell defining an active annular zone. An interrupted helical screw carried by the core conveys material from an inlet at one end of the zone to an outlet at the opposite end of the zone. The furnace is operated with the annulus only partially filled. Volatiles rise to a void space at the top of the annulus and are drawn off.
Claims40
A furnace, comprising:
- stationary structure including a barrel element with a stationary inner surface defining an approximately cylindrical open chamber having a central axis which is oriented substantially inclined from vertical;
- heating means positioned to introduce heat to the chamber;
- a shaft mounted axially with respect to said central axis to turn within said chamber;
- moving structure carried by and rotatable on said shaft, including an approximately cylindrical outer surface positioned approximately concentric with respect to said inner surface and said shaft, wherein to define an approximately annular active zone within said chamber isolated from said shaft;
- and
- conveying means associated with said active zone for urging material from an inlet at one end of said chamber towards an outlet at an opposite end of said chamber.
3 more elements
Dependencies are inferred from the claim text.