Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1984-06-29
1986-04-22
Hruskoci, Peter
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210697, 210699, 252181, 252389R, 422 15, 422 18, 422 19, C02F 508
Patent
active
045841047
ABSTRACT:
A method of inhibiting amorphous silica scale formation on surfaces in contact with industrial waters containing dissolved silicates is disclosed. The method involves treating the industrial waters with a boron compound which dissolves in or hydrolyzes in these industrial waters to give the orthoborate ion. The preferred boron compound is boric acid, its salts, or precursors.
REFERENCES:
patent: 2805915 (1957-09-01), Rohrback
patent: 3284319 (1966-11-01), Hill
patent: 3436350 (1964-10-01), Schwedler
patent: 3639279 (1972-02-01), Gardner et al.
patent: 3671447 (1972-06-01), Kowalski
patent: 3671448 (1972-06-01), Kowalski
patent: 3770413 (1973-11-01), Tabor et al.
patent: 3852213 (1974-12-01), Cooney
patent: 3948792 (1976-04-01), Watsen et al.
patent: 4000083 (1976-12-01), Heesen
patent: 4328106 (1982-05-01), Harrar et al.
patent: 4344862 (1982-08-01), Widder et al.
patent: 4405461 (1983-09-01), Rogers
Weres, O., Yee, A., Tsao, L., Kinetics of Silica Polymerization, May, 1980, University of California, Lawrence Berkely Laboratory Earth Science Division, U.S. Dept. of Energy Contract W-7405-Eng-48.
Iler, Ralph K., The Chemistry of Silica, New York, John Wiley and Sons, 1979.
On-Line Tests of Organic Additives for the Inhibition of the Precipitation of Silica from Hypersaline Geothermal Brine by Jackson, E. Harrar and others, Apr. 3, 1979, U.S. Government Contract Report *UCID-18091.
Field Tests of Organic Additives for Scale Control at the Salton Sea Geothermal Field by Harrar, J. E., and others, Society of Petroleum Engineers Journal, Feb. 1982, pp. 17-27.
On-Line Tests of Organic Additives for the Inhibition of the Precipitation of Silica from Hypersaline Geothermal Brine IV, Final Tests of Candidate Additives, by Jackson E. Harrar and others, Feb. 1980, University of California, Lawrence Livermore, Report UCID-18536.
Final Report on Tests of Proprietary Chemical Additives as Antiscalants for Hypersaline Geothermal Brine, by J. E. Harrar and others, Lawrence Livermore Laboratory, Jan. 1980, Report #UCID-18521.
On-Line Tests of Organic Additives for the Inhibition of the Precipitation of Silica from Hypersaline Geothermal Brine III, Scaling Measurements and Tests of other Methods of Brine Modification by J. E. Harrar and others, Report #UCID-18238.
Meutterties, The Chemistry of Boron and its Compounds, New York, John Wiley and Sons, 1980.
Cotton, F., Albert and Wilkinson, Geoffrey, Advanced Inorganic Chemistry, New York, John Wiley and Sons, 1980.
Epple Donald G.
Hruskoci Peter
Nalco Chemical Company
Premo John G.
LandOfFree
Silica inhibition: prevention of silica deposition by boric acid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silica inhibition: prevention of silica deposition by boric acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silica inhibition: prevention of silica deposition by boric acid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1914165