Abstract: Provided is a method and system for providing fire shield protection to an aircraft auxiliary power unit, or portion thereof, or to other aircraft systems.

Abstract: A hybrid combustor, for providing stable high and low levels of operation while minimizing emissions of NOx, CO, and UHCs, includes a casing having a chamber, a catalytic combustor disposed in the chamber, and a non-premixed combustor disposed in the chamber. The hybrid combustor may comprise a fuel nozzle comprising a casing having a chamber, and a body supportable in the chamber to define a passageway between the body and the casing. The passageway has an inlet for receiving a stream of air and an outlet for discharging a stream of fuel and air, and the body includes a tapering downstream portion. Desirably, flow separation of the fuel and air mixture from the body (i.e., recirculation of the fuel and air mixture in the passageway and/or chamber) is inhibited whereby a generally uniform fuel and air mixture is provided.

Abstract: A support structure for securing a catalyst structure comprising a multiplicity of longitudinally disposed channels for passage of a flowing gas mixture within a reactor, said support structure being comprised of a monolithic open celled or honeycomb-like structure formed by thin strips or ribs of high temperature resistant metal or ceramic which abuts against one end of the catalyst structure, and extends in a direction perpendicular to the longitudinal axis of the catalyst structure to essentially cover an end face (at either the inlet end or outlet end or both) of the catalyst structure with the support structure being secured on its periphery to the reactor wall. The strips or ribs making up the support structure are bonded together to form a unitary structure having cellular openings at least as large as the catalyst structure channel openings.

Abstract: A method is described for the thermal insulation of steel mill reheat furnace skid pipes, which comprises adhering to the pipes an unbonded, unreinforced batt of refractory fiber, and, preferably, thereafter applying a layer of refractory cement to the top of the adhered batt. The insulation structure formed by this method is also described.

Abstract: Lining slabs for prolonged contact with molten metals, e.g. for use in tundishes, are made from a refractory heat-insulating composition comprising by weight:0 to 1% bentonite clay0 to 4% cellulosic fibre4 to 8% synthetic resin binder0 to 7% refractory fibrous material, andBalance to 100% a mixture of particulate magnesia and particulate olivine,The weight ratio of magnesia : olivine being from 1:10 to 4:1 and the composition containing at least 1% by weight of fibrous material.

Abstract: The invention provides a tundish comprising a casing having a floor with at least one outlet nozzle located therein and upstanding sidewalls, the casing having a permanent refractory lining, and an expendable partition of refractory heat insulating material being located adjacent one or each nozzle within the tundish and dimensioned to stand proud of the adjacent portion of the tundish floor. Generally the expendable partition is made of a material comprising a major proportion of particulate refractory, a minor proportion of fibrous material and an organic binder. The partition may comprise four walls together defining a box section or it may be an integral preformed sleeve.