Patent ID: 6009711
Filing Date: 2000-01-04
Classification: F03G,Y02E

Abstract:
Apparatus for producing power using a geothermal fluid that is a mixture of high pressure steam and brine, said apparatus comprising;a) a separator for separating said geothermal; fluid into a brine stream and a steam stream;b) a steam turbine coupled to a generator for expanding said high pressure steam stream thereby driving said generator and producing power, and producing heat depleted steam;c) a steam condenser responsive to a supplied stream of organic fluid and to said heat depleted steam for producing a stream of vaporized organic fluid and a stream of steam condensate;d) a superheater responsive to said brine stream and to said vaporized organic fluid stream for producing a stream of superheated organic vapor and a stream of cooled brine;e) an organic vapor turbine coupled to a generator for expanding said superheated organic vapor thereby driving the last-mentioned generator and producing power, and producing heat depleted organic fluid;f) an organic vapor condenser for condensing said heat depleted organic fluid and producing organic condensate;g) a preheater responsive to said steam condensate and to said organic condensate for producing a stream of pre-heated organic fluid and a stream of cooled steam condensate;h) means for supplying said pre-heated organic fluid to said steam condenser; andi) means for combining said stream of cooled brine with said stream of cooled steam condensate to form a combined stream.