Chemical formulation and combined process for inhibiting deposit

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component

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55 73, 55 89, 55 96, 261DIG46, 261 17, 261DIG11, 261DIG9, 261 21, 252180, C01B 1700

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active

048349550

ABSTRACT:
An inhibitor formulation for inhibiting corrosion and deposition of calcium phosphate, calcium carbonate, and silt in a cooling water system and calcium sulphate (gypsum) scaling in a flue gas desulfurization system. The inhibitor formulation comprises polyacrylate, polymaleic anhydride, and phosphonate in a active weight ratio range between about 1 to 40:1 to 40:0.1 to 15, respectively. The inhibitor formulation is employed to inhibit corrosion and scaling in a combined cooling water/flue gas desulfurization process wherein at least a portion of cooling water blowdown is supplied to make up at least a portion of reagent makeup and/or mist eliminator wash water in the flue gas desulfurization system.

REFERENCES:
patent: 3914378 (1975-10-01), Selmeczi
patent: 4250152 (1981-02-01), Biedell et al.
patent: 4406811 (1983-09-01), Christensen et al.
patent: 4464315 (1984-08-01), O'Leary
patent: 4530955 (1985-07-01), Wilson et al.
patent: 4670224 (1987-06-01), Stehnins et al.
patent: 4713195 (1987-12-01), Schneider
Dubin, L., "The Effect of Organophosphorus Compounds and Polymers on CACO.sub.3 Crystal Morphology," J. Cooling Tower Institute, 3 (1), 17 (1982).
Bohnsack, G., Lee, K. H., Johnson, D. A., and Buss, E., "Investigations of the Mechanisms of Organic Compounds used in Cooling Water Corrosion Control," presented at Corrosion/Nace, Mar. 1985.
Schumacher, P. D., J. A. Romberger, and R. A. Johnson, "Corrosion Inhibition Techniques in Recirculating Cooling Water," Proceedings Int. Water Conf., 47, 360, 1986.
Kelly, J. A., Lin, M. L., and Johnson, D. A., "Computer Aided Modeling and Monitoring of Cooling Water and Boiler Water Chemistry," presented at Corrosion/Nace, Mar. 1986.
Hoots, J. E. and Crucil, G. A., "The Mechanism of Polymers in Alkaline Cooling Water Programs," presented at Corrosion/Nace, Mar. 1986, also Materials Performance, 26 (4), 17 (1987).
Lin, M. L., Ekis, E. W., Jr., Mouche', R. J., and Nassos, P. A., "Effective Gypsum Scale Inhibitors for Flue Gas Desulfurization Applications," presented at Corrosion/Nace 88, Mar. 21-25, 1988.

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