Patent ID: 8176738

Claim:
A power extraction system comprising: a cement plant producing a hot air stream and a flue gas stream; a particulate separation and heat transfer subsystem including: a hot air particulate separation and heat transfer unit adapted to heat a first high temperature heat transfer fluid stream with the air stream to form a heated first high temperature heat transfer fluid stream and a cooled air stream, a heat exchange apparatus including: a first heat exchange stage adapted to heat a fully condensed, multi-component working fluid stream in counterflow with the first high temperature heat transfer fluid stream to form a partially vaporized, multi-component working fluid stream comprising at least one lower boiling point component and at least one higher boiling point component and a cooled first high temperature heat transfer fluid stream; and a second heat exchange stage adapted to heat the partially vaporized, multi-component working fluid stream in counterflow with a second heat source stream to form a fully vaporized and superheated, working fluid stream and a cooled second heat source stream; a power plant including: an energy extraction unit adapted to convert a portion of thermal energy in the fully vaporized and superheated, working fluid stream into a usable form of energy and to form a spent, multi-component working fluid stream; and a condensation unit adapted to condense the spent, multi-component working fluid stream thermal to form the fully condensed, multi-component working fluid stream.