18817780. pH ESTIMATION DEVICE AND pH ESTIMATION METHOD FOR SILICA-SUPERSATURATED FLUID (FUJI ELECTRIC CO., LTD.)
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pH ESTIMATION DEVICE AND pH ESTIMATION METHOD FOR SILICA-SUPERSATURATED FLUID
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pH ESTIMATION DEVICE AND pH ESTIMATION METHOD FOR SILICA-SUPERSATURATED FLUID
This abstract first appeared for US patent application 18817780 titled 'pH ESTIMATION DEVICE AND pH ESTIMATION METHOD FOR SILICA-SUPERSATURATED FLUID
Original Abstract Submitted
A pH of a fluid is estimated without using a pH meter. A pH estimation system for a silica-supersaturated fluid includes: a first flow path that branches off from a pipe in which a fluid containing silica flows, and extracts a part of the fluid; a first measurement unit that is connected to the first flow path via an on-off valve; a retention portion that is connected to the first flow path; a second flow path that is connected to the retention portion and returns the fluid to the pipe; a second measurement unit that is connected to the second flow path via an on-off valve; and a computing device that is electrically connected to the first measurement unit and the second measurement unit, wherein the first measurement unit and the second measurement unit include a fluid temperature measurement device and a silica concentration measurement device; and the computing device stores a relational expression of a rate of decrease in a silica concentration, a silica saturation concentration, a temperature and a pH, and calculates the pH of the fluid, on the basis of measurement results in the first measurement unit and the second measurement unit and the relational expression.
