CHEMICAL WASHING LIQUID FOR SCALE IN GEOTHERMAL POWER PLANT

摘要

PURPOSE:To dissolve and remove the scales deposited on a hot water pipeline, etc., and consisting essentially of SiO2 by using the titled chemical washing liquid obtained by adding a polyphosphate and an acid corrosion inhibitor to the fluorine compd. added with HF. CONSTITUTION:The chemical washing liquid for scales is composed of 1 kind selected from the F compds. (NH4HF2, KHF2, NaHF2, NH4F, KF, NaF, etc.), HF, a polyphosphate, and an acid corrosion inhibitor. The scales formed and deposited on the hot water pipeline of the geothermal power plant, the equipment through which hot water passes, etc., and consisting essentially of SiO2 are dissolved and removed by this washing liquid.