Patent ID: 7968048

Claim:
A sparger for use in a process within a reactor vessel having an inlet nozzle, the sparger comprising: a tube having a first end for fluid communication with the reactor vessel and a second end for coupling to a reagent supply, wherein the tube is formed from a thermally conductive substrate metal and a corrosion resistant layer on a surface of the substrate, said corrosion resistant layer having an ignition temperature; and a flange connected to and extending outwardly from said tube for sealing said sparger to said inlet nozzle, wherein said thermally conductive metal forms a pipe having an interior surface and an exterior surface disposed within the reactor vessel or the inlet nozzle and has thermal conductive properties sufficient to maintain said corrosion resistant layer below its ignition temperature; and said corrosion resistant layer covers said interior surface and said exterior surface disposed within the reactor vessel or the inlet nozzle and is formed from concentric linings at said interior surface and said exterior surface joined with a seal weld at said first end; and said concentric linings defines an expansion gap between said concentric linings and said thermally conductive metal at said first end.