초록 ▼

A modular power plant operating from a source of geothermal fluid that produces geothermal steam containing non-condensable gases such as hydrogen sulfide, and geothermal brine, includes a steam module and an organic fluid module. The steam module has a steam turbine coupled to a generator for expan

A modular power plant operating from a source of geothermal fluid that produces geothermal steam containing non-condensable gases such as hydrogen sulfide, and geothermal brine, includes a steam module and an organic fluid module. The steam module has a steam turbine coupled to a generator for expanding the geothermal steam and producing electrical power, low pressure steam, and condensed steam. The organic fluid module includes a vaporizer containing an organic fluid and receiving low pressure steam slightly above atmospheric pressure from the steam module for producing vaporized organic fluid, steam condensate, and a mixture of steam and non-condensable gases, an organic vapor turbine coupled to a generator for expanding the vaporized organic fluid and producing electrical power and expanded organic fluid, a condenser for condensing the expanded organic fluid to liquid organic fluid, preheater apparatus for preheating the liquid organic fluid using heat contained in the steam condensate and producing cooled steam condensate, and a pump for supplying preheated organic fluid to the vaporizer.

대표청구항 ▼

[ What is claimed is:] [1.] A modular power plant for operating from a source of geothermal fluid that produces geothermal steam containing non-condensable gases including hydrogen sulfide, and geothermal brine, said power plant comprising:a) at least one steam module having a steam turbine coupled

[ What is claimed is:] [1.] A modular power plant for operating from a source of geothermal fluid that produces geothermal steam containing non-condensable gases including hydrogen sulfide, and geothermal brine, said power plant comprising:a) at least one steam module having a steam turbine coupled to a generator for expanding said geothermal steam and producing electrical power, low pressure steam, and condensed steam;b) at least one organic fluid module including a vaporizer containing an organic fluid and receiving low pressure steam from said steam module for producing vaporized organic fluid, steam condensate, and a mixture of steam and non-condensable gases, at least one organic vapor turbine coupled to a generator for expanding said vaporized organic fluid and producing electrical power, and expanded organic fluid, a condenser for condensing said expanded organic fluid to liquid organic fluid, preheater apparatus for preheating said liquid organic fluid using heat contained in both said steam condensate and said mixture, producing cooled steam condensate and non-condensable gases containing a small amount of steam, and a pump for supplying preheated organic fluid to said vaporizer;c) means for discarding cooled steam condensate;d) disposal apparatus for disposing of said non-condensable gases without releasing significant concentrations of hydrogen sulfide into the atmosphere.