MULTI-STAGE EVAPORATION PLANT OF STEAM-GAS RECOVERY TYPE Russian patent published in 1998 - IPC

FIELD: making up losses of working medium and evaporation of wastes. SUBSTANCE: used as heating medium is steam of low-pressure loop of waste-heat boiler; excessive steam of last stage of plant is directed to part of low pressure of steam turbine. Multi-stage evaporation plant includes evaporation stages connected in series by secondary vapor pipe lines. Outlets of all heating sections of evaporation stages (but for first one) are connected to inlet of distillate expander whose steam outlet is connected to secondary vapor pipe line of last stage of plant and water outlet is connected to deaerator of steam turbine plant which is connected with condensate line of heating steam of first evaporation stage. EFFECT: enhanced efficiency. 1 dwg