System and method for decreasing NOx emissions from a fluidized bed combustion system
AssigneeALSTOM Technology Ltd
InventorIqbal F. Abdulally
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a NOx reducing system comprising a first inner conduit in fluid communication with a reactant source; and a first outer conduit comprising an open end for receiving the first inner conduit and a closed end; the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream. Also disclosed herein is a NOx reducing system comprising a conduit comprising a closed end and an open end that is in fluid communication with a reactant source; the conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream; the port being located on a downstream surface of the first outer conduit.
Claims27
A NOx reducing system comprising:
- a conduit comprising a closed end and an open end;
- the open end being in fluid communication with a reactant source;
- the conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream, wherein the port is located on a downstream side of the conduit;
- the downstream side being defined by a flow direction of the exhaust gas stream.
A fluidized combustion bed system comprising:
- a NOx reducing system comprising:
- a first inner conduit in fluid communication with a reactant source;
- and
- a first outer conduit comprising an open end for receiving the first inner conduit and a closed end;
- the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream, wherein the port is located on a downstream side of the first outer conduit;
- the downstream side being defined by a flow direction of the exhaust gas stream.
A method comprising:
- injecting a reactant from a reactant source into a NOx reduction system that comprises:
- a first inner conduit in fluid communication with the reactant source;
- and
- a first outer conduit comprising an open end for receiving the first inner conduit and a closed end;
- the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream;
- wherein the port is located on a downstream side of the first outer conduit;
- the downstream side being defined by a flow direction of the exhaust gas stream;
- and
- discharging the reactant from the port into the exhaust gas stream.
A NOx reducing system comprising:
- a first inner conduit in fluid communication with a reactant source;
- and
- a first outer conduit comprising an open end for receiving the first inner conduit and a closed end;
- the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream, wherein the port is located on a downstream side of the first outer conduit;
- the downstream side being defined by a flow direction of the exhaust gas stream.
A fluidized combustion bed system comprising:
- a furnace;
- a solids separator in fluid communication with the furnace;
- the furnace comprising a vortex finder;
- and
- an outlet duct in fluid communication with the vortex finder;
- the outlet duct having a NOx reducing system located downstream of the vortex finder, the NOx reducing system comprising:
- a first inner conduit in fluid communication with a reactant source;
- and
- a first outer conduit comprising an open end for receiving the inner conduit and a closed end;
- the first outer conduit comprising a port for discharging reactant from the reactant source into an exhaust gas stream, wherein the port is located on a downstream side of the first outer conduit;
- the downstream side being defined by a flow direction of the exhaust gas stream.
Dependencies are inferred from the claim text.