Protection of superheater tubes against corrosion

摘要

This invention relates to panels comprising a rigidly interconnected set of metal tubes with a continuous sheet of a refractory lining material which has a satisfactory thermal conductivity and is chemically inert with respect to combustion products covering at least a portion of the surface of the set of tubes, the lining material including a binder which provides the sheet with resistance to collapse in the cold state. Such panels are of particular value in recuperation boilers which burn fuels such as domestic garbage, industrial waste or waste oil.