FEEDWATER STORAGE AND RECIRCULATION SYSTEM AND METHOD

摘要

A feed water storage and recirculation system for a steam turbine power plant having a post-combustion carbon capture plant which uses steam from the power plant as a heat source for regeneration of absorbent and returns condensate from the post-combustion carbon capture plant to the steam turbine power plant, and a plant with post-combustion carbon capture are described, comprising: a feed water storage tank; a deaerator integral to or fluidly in series with the feed water storage tank; a steam extraction conduit to convey water/ steam to the feed water storage tank and deaerator after extraction from a turbine of a steam turbine power plant; a feed water supply conduit to supply feed water from the feed water storage tank to a boiler of a steam turbine power plant; a low pressure condensate conduit comprising at least a PCC condensate conduit to return condensate from an associated post-combustion carbon capture plant to a location upstream of the deaerator, together with the condensate returning through the low pressure feed water heaters from the condenser; a flow restrictor provided in the steam extraction conduit between the turbine and the feed water storage tank and deaerator.