Continuous particle drying apparatus
OwnerLéon Crossetinventor
Life of this patent
Estimating the term…
Abstract
A dryer dries particles, wherein the dryer comprises two circular decks mounted substantially horizontally and rotating in opposite directions relative to one another about a same vertical axis, Z, the surface of said decks being perforated and permeable to air, steam and water, a means for blowing hot gas in a flow substantially parallel to the axis Z, passing through the second deck before passing through the first deck, means for distributing said particles to be dried on the first and second decks and means for recovering the particles after a rotation of each deck, and a means for transferring the particles collected from the first deck by the recovery means to a second distribution means suitable for distributing said particles along a radius of the second deck.
Claims17
A dryer for drying particles comprising,
- (a) a chamber comprising an essentially cylindrical wall extending along a vertical axis, Z,
- (b) a first circular deck mounted on the wall of said chamber substantially normal to the vertical axis, Z, and rotating in a first direction about the vertical axis, Z, the surface of the first deck being perforated, and permeable to the gases including air and steam and to water, and
- (c) a second circular deck mounted at a certain distance from the first deck on the wall of said chamber substantially normal to the vertical axis, Z, and rotating about said vertical axis, Z, in the reverse direction of rotation of the first deck, the surface of the second deck being perforated and permeable to the gases including air and steam and to water,
- (d) a blowing hot gas means for blowing hot gas in a flow substantially parallel to the axis Z, passing first through the perforated surface of the second deck before passing directly after through the perforated surface of the first deck,
- (e) a first distribution means for distributing said particles to be dried suitable for distributing said particles before drying along a radius of the first deck,
- (f) a recovery means for recovering the particles deposited on the first deck after a rotation of a given angle thereof, said recovery means being situated downstream of the first distribution means, and
- (g) a means for transferring the particles collected from the first deck by the recovery means to a second distribution means suitable for distributing said particles along a radius of the second deck.
Dependencies are inferred from the claim text.