Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1997-11-25
1999-01-12
Hruskoci, Peter A.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
606412, 606415, 210747, 166310, C02F 510
Patent
active
058582452
ABSTRACT:
A method for controlling fouling of a production or reinjection well, a flashing vessel or a heat-exchange surface exposed to a high-enthalpy geothermal brine that forms metal/silicon-containing scale comprises the addition of a metal complexing agent to the brine to form a fluid mixture containing a soluble metal/silicon component complex that inhibits the amount of scale formation when the temperature of the fluid mixture is reduced. The addition of a preferred metal complexing agent such as forms of EDTA, citric acid or acetic acid maintains dissolved aluminum species in the brine and inhibits the formation of aluminum silicate precipitate.
REFERENCES:
patent: 4032460 (1977-06-01), Zilch et al.
patent: 4479543 (1984-10-01), Kalfayan et al.
patent: 4500434 (1985-02-01), Jost et al.
patent: 4532047 (1985-07-01), Dubin
patent: 5190664 (1993-03-01), Gallup et al.
patent: 5200165 (1993-04-01), Harper et al.
patent: 5229003 (1993-07-01), Duyvesteyn
patent: 5277823 (1994-01-01), Hann et al.
patent: 5328690 (1994-07-01), Sikes
patent: 5342787 (1994-08-01), Bardsley et al.
patent: 5403493 (1995-04-01), Mouche et al.
patent: 5665242 (1997-09-01), Gallup
D.L. Gallup, "Brine pH Modification Scale Control Technology," Geothermal Resources Council Transactions Vo. 20, Sep./Oct. 1996, pp. 749-755.
D.L. Gallup, "Recovery of Silver-Containing Scales From Geothermal Brines," Geotherm. Sci. & Tech., 1995 vol. 4(3), pp. 175-187.
D.L. Gallup, "The Use of Reducing Agents for Control of Ferric Silicate Scale Deposition," Geothermics, Vol. 22, No. 1, pp. 39-48, 1993.
D.L. Gallup, "Recovery of Silver-Containing Scales From Geothermal Brines," Geothermal Resources Council Transactions, vol. 16, Oct. 1992, pp. 351-355.
D.L. Gallup, "Aluminum Silicate Scale Formation And Inhibition: Scale Characterization and Laboratory Experiments," Geothermics, Vol. 26, No. 4, pp. 483-499, 1997.
Frieman Shlomo R.
Hruskoci Peter A.
Union Oil Company of California
Wirzbicki Gregory F.
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