Method and plant for the heat treatment of solids containing iron oxide
AssigneeOutotec Oyi
InventorsMartin Hirsch, Michael Stroeder, Peter Weber
Life of this patent
Estimating the term…
Abstract
A plant for the heat treatment of solids containing iron oxide includes a fluidized bed reactor. The reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located, and a mixing chamber being located above the upper orifice region of the at least one gas supply tube. The gas flowing through the at least one gas supply tube entrains solids from the stationary annular fluidized bed-into the mixing chamber when passing through the upper orifice region of the at least one gas supply tube.
Claims9
A plant for the heat treatment of solids containing in oxide, the plant comprising:
- a fluidized bed reactor, wherein the reactor comprises at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located;
- and
- a mixing chamber located above an upper orifice region of the at least one gas supply tube such that gas flowing through the at least one gas supply tube entrains solids from the stationary annular fluidized bed into the mixing chamber when passing through the upper orifice region of the at least one gas supply tube;
- and
- a preheating stage including a combustion chamber and a preheater for the solids disposed upstream of the reactor.
A plant for the heat treatment of solids containing iron oxide, the plant comprising:
- a first reactor, wherein the first reactor comprises at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located;
- a mixing chamber located above an upper orifice region of the at least one gas supply tube such that gas flowing through the at least one gas supply tube entrains solids from the stationary annular fluidized bed into the mixing chamber when passing through the upper orifice region of the at least one gas supply tube;
- and
- a second reactor disposed downstream of the first reactor, the second reactor including a solids separator and a supply conduit configured to provide exhaust gas from the solids separator into the fluidized bed of the first reactor.
Dependencies are inferred from the claim text.