OXY BOILER POWER PLANT OXYGEN FEED SYSTEM HEAT INTEGRATION

摘要

PROBLEM TO BE SOLVED: To provide an improved coal fired oxy boiler power plant.SOLUTION: A scheme for a coal fired oxy boiler power plant is provided in which a steam coil oxygen preheater (5) located on an oxygen line of an air separation unit is thermally integrated with the condensate system. Thermal energy for the steam coil oxygen preheater (5) is provided via an extraction line (4) connected to a steam extraction port (2) of an intermediate pressure steam turbine (1). A drain line (8) of the steam coil oxygen preheater (5) fluidly connects the steam coil oxygen preheater to a point of the Rankine steam cycle fluidly within the condensate system.