Patent ID: 6186221
Filing Date: 2001-02-13
Classification: F22B

Abstract:
A heat recovery steam generator comprising:a housing defining a horizontal exhaust gas flow path;a plurality of heat recovery assemblies in said housing, at least one of said heat recovery assemblies comprising a plurality of rows of horizontal heat transfer tubes extending transversely across said flow path, said heat exchange tubes in said one heat recovery assembly being supported in said rows by a plurality of heat transfer tube support plate assemblies spaced transversely from each other, each of said support plate assemblies being divided into a plurality of separate support plate segments, each of said support plate segments extending in the direction of said gas flow path and being independently suspended and supporting a portion of said plurality of rows of said heat transfer tubes and said support plate segments of each of said support plate assemblies being coplanar in a plane extending in the direction of said gas flow path and defining vertical plate gaps therebetween for thermal expansion.