Rotary furnace for heat treatment of solids
AssigneeIfp Energies Nouvelles
InventorsElena Sanz Garcia, Mathieu Rolland
Life of this patent
Estimating the term…
Abstract
This invention relates to a rotary furnace that is designed for the heat treatment of solids comprising at least one rotary tube (1) into which the solids are introduced and a heating means outside of the rotary tube that makes it possible to conduct the heat treatment, characterized in that the rotary tube comprises—on its inside surface, in contact with the feedstock to be treated—at least 1 heating blade (30, 31, 32, 33, 34, 35, 36, 37, 38). The invention also relates to the use of this furnace for conducting the roasting of solid biomass.
Claims19
A rotary furnace that is designed for heat treatment of solids by conduction of heat in the absence of oxygen, comprising at least one rotary tube (1) into which the solids are introduced and a heater outside of the rotary tube that enables conducting the heat treatment, wherein the rotary tube comprises—on its inside surface, in contact with the feedstock to be treated—at least one heating blade (30, 31, 32, 33, 34, 35, 36) that is integral with the rotary tube (1), heated internally by conduction of the heat from the rotary tube (1), extends over the entire length of the rotary furnace is hollow to permit the internal passing of hot gases via piercing of the tube, and
- (a) the heating blade (30, 31, 32, 34, 37) is longitudinal, and is oriented along the radial axis of the rotary furnace, or
- (b) the blade (33) is in the form of a helical propeller that is oriented along the radial axis of the furnace.
A rotary furnace that is designed for heat treatment of solids by conduction of heat in the absence of oxygen, comprising at least one rotary tube (1) into which the solids are introduced and a heater outside of the rotary tube that enables conducting the heat treatment, wherein the rotary tube comprises—on its inside surface, in contact with the feedstock to be treated—at least one heating blade (30, 31, 32, 33, 34, 35, 36) that is integral with the rotary tube (1), heated internally by conduction of the heat from the rotary tube (1), extends over the entire length of the rotary furnace is hollow to permit the internal passing of hot gases via piercing of the tube, having at least two blades (31, 32) with at least two different heights (H, h) that are arranged alternately in such a way that the blades of same size are not side-by-side.
A rotary furnace that is designed for heat treatment of solids by conduction of heat in the absence of oxygen, comprising at least one rotary tube (1) into which the solids are introduced and a heater outside of the rotary tube that enables conducting the heat treatment, wherein the rotary tube comprises—on its inside surface, in contact with the feedstock to be treated—at least one heating blade (30, 31, 32, 33, 34, 35, 36) that is integral with the rotary tube (1), heated internally by conduction of the heat from the rotary tube (1), extends over the entire length of the rotary furnace is hollow to permit the internal passing of hot gases via piercing of the tube, wherein the blades (35) are formed by a corrugated sheet that replaces the inside wall of the furnace, said corrugated sheet having waves parallel to the longitudinal axis of the furnace.
Dependencies are inferred from the claim text.