Silica scale deposition control

Details Silica scale deposition control Silica scale deposition control

1991-10-31

1993-09-21

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

606412, 606415, 210713, 210714, 210741, 210742, 210747, 210 961, 210143, 210149, 364502, B01D 2130

Patent

active

052465934

ABSTRACT:
The concentration of amorphous silica in an aqueous solution is monitored to determine a concentration above which silica will precipitate. The precipitation concentration is data processed with a means for data processing by solving the Setchnow equation for aqueous solutions containing silica. The means for data processing generates a signal that, if need be, can be used to automatically adjust the parameters of the system to prevent silica precipitation or to carefully control the precipitation rate. An alternative embodiment provides a method for determining amorphous silica concentration, then data processing the solution to the Setchnow equation, generating a signal, and adjusting the parameters of the system. The apparatus and method of this invention are particularly useful in geothermal power plants.

REFERENCES:
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patent: 4931187 (1990-06-01), Derham et al.
D. L. Gallup, manuscript of Geothermal Resources Council Transactions, 13, 241 (1989), "The Solubility of Amorphous Silica in Geothermal Brines."

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