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US 4,393,603 AGranted
Dryer thermal efficiency
AssigneePhillips Petroleum Company
InventorJohn R. Casperson
Life of this patent
Estimating the term…
Abstract
The thermal efficiency of a dryer is improved by affixing to the shell of the dryer that contains the material to be dried projections which contact a heating medium surrounding the shell of the dryer and protrude into the interior of the shell. Heat is transferred from the heating medium by the projections to the material to be dried that is inside the shell of the dryer.
Claims15
A process for removing liquid from particulate matter which comprises:
- (a) feeding said particulate matter containing the liquid into a rotary drum vessel which has attached thereto projections extending from the outside of the drum vessel through the drum vessel wall to the inside thereof, and having portions extending into the drum vessel and portions extending into the space outside of the drum vessel,
- (b) contacting the outside of said vessel and those portions of said projections which extend into the space surrounding said vessel with a heating medium,
- (c) rotating said rotary drum vessel containing said particulate material
- (d) exposing the particulate matter containing liquid to those inside portions of said projections which extend from the interior of the vessel through the walls of the vessel to the exterior of the vessel and which contact the heating medium that contacts the vessel thereby transferring heat through said projections,
- (e) vaporizing the liquid to be removed, and
- (f) recovering particulate matter having reduced liquid content.
3 more elements
An apparatus for removing liquid from particulate matter comprising:
- (a) a rotary drum vessel having projections extending from the interior of said vessel through the wall of said vessel to the exterior of said vessel, the internal and the external sections of the projections forming an integral part for heat conduction,
- (b) a housing surrounding at least a portion of said vessel and having an interior spaced from the exterior surface of the vessel forming a chamber with said external sections of the projections extending into the space formed between said vessel and said housing,
- (c) means for supplying a heating medium to contact the exterior of said vessel in said chamber
- (d) a means for feeding particulate matter containing liquid into the vessel,
- (e) a first outlet means for removing particulate matter with reduced liquid content from the vessel, and
- (f) a second outlet means for withdrawing liquid which has been vaporized and removed from the particulate matter inside the vessel.
3 more elements
Dependencies are inferred from the claim text.