pH modification of geothermal brine with sulfur-containing acid

Details pH modification of geothermal brine with sulfur-containing acid pH modification of geothermal brine with sulfur-containing acid

1995-12-28

1997-08-12

Hruskoci, Peter A.

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

606412, 606415, 166310, 210743, 210747, 210698, C02F 508

Patent

active

056561725

ABSTRACT:
Sulfur-containing acid is produced at a geothermal energy source from hydrogen sulfide produced as part of a geothermal process and introduced into aqueous liquid brine to lower the pH of the liquid brine. The lowered pH of the brine inhibits silica, metal sulfide and/or calcite formation on the surfaces of geothermal energy processing equipment or in subterranean formations in which the brine is injected.

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patent: 5190664 (1993-03-01), Gallup et al.
Hirowatari et al., Production of Sulfuric Acid From Geothermal Power Station Exhausted Gas for Use in Scale Prevention, Research Laboratory of Kyushu Electric Power Co. Inc., Japan and Chemical Laboratory of Mitsubishi Heavy Industries, Ltd., Japan, pp. 2445-2450. (Orally presented in Italy in Jun., 1995; Published Aug., 1995).

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