GEOTHERMAL POWER GENERATION SYSTEM AND GEOTHERMAL POWER GENERATION SYSTEM SCALE PREVENTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a geothermal power generation system scale prevention method for preventing precipitation of scale in the steam system by supplying oxidant to provide an acidic property.SOLUTION: A geothermal power generation system includes: a steam separator 53 to which geothermal hot water 52 ejected from a production well 51 and containing steam 54 is supplied by a hot-water ejection line L, and which separates the steam 54 from the hot water 52; a turbine 55 rotating by the steam 54 separated by the steam separator 53; a generator 67 connected to the turbine 55 and generating electric power by rotation of the turbine 55; a hot-water return line Lreturning separated hot water 52a separated by the steam separator 53 to a hot-water return well 51B; and an oxidant supply unit 12 supplying oxidant 11 into the separated hot water 52a in the hot-water return line L.