Process and device for treating furnace gas
AssigneeDanieli Corus B.V.
InventorsWouter Bernd Ewalts, Pieter Dirk Klut
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Abstract
A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel. A powder agent, such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector which is positioned centrally within the channel. The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet.
Claims16
A process for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel, wherein a powder agent is injected into the furnace gas flow, wherein the powder agent is first fluidized in a fluidized bed and then added to the furnace gas flow via an injector which is positioned centrally within the channel, and wherein an injection velocity of the powder agent is adjusted by controlling a volume of fluidization gas vented via a venting outlet.
A device for treating a flow of furnace gas, the device comprising:
- a flow channel and an injector centrally arranged within the flow channel and provided with radially directed outlets, the injector comprising a chamber configured to contain a fluidized bed of a powder agent with a supply for a fluidizing gas configured to blow the powder agent via the radially directed outlets into the furnace gas flow;
- and
- a vent connecting the chamber to a fluidizing gas discharge outside the flow channel, wherein the vent is adjustable to control an injection velocity of the powder agent when it is injected into the furnace gas flow.
Dependencies are inferred from the claim text.