Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1982-02-18
1984-04-24
Page, Thurman K.
Compositions
Water-softening or purifying or scale-inhibiting agents
203 7, 210696, 210697, 210698, 210699, 210700, 210701, C02F 502
Patent
active
044446756
ABSTRACT:
Formation of alkaline scale in water distillation equipment is reduced or substantially eliminated without a significant increase in equipment corrosion rate by dissolving an effective amount of carbon dioxide in brine which is boiling or flashed or which has been boiled or flashed and which contains an effective amount of a high temperature threshold effect chemical scale control additive.
REFERENCES:
patent: 3218241 (1965-11-01), Checkovich
patent: 3420775 (1969-01-01), Cadwallader
patent: 3607666 (1971-09-01), Roller
patent: 3748234 (1973-07-01), Pottharst, Jr.
patent: 3810834 (1974-05-01), Jones et al.
patent: 4002538 (1977-01-01), Pottharst, Jr.
patent: 4188291 (1980-02-01), Anderson
patent: 4255259 (1981-03-01), Hwa et al.
patent: 4260461 (1981-04-01), Pottharst, Jr.
Powell, Water Conditioning for Industry, pp. 473-475, (McGraw-Hill 1954).
Betz Handbook of Industrial Water Conditioning, Chapter 14-"Recarbonation", (1945).
Betz Handbook of Industrial Water Conditioning, Chapter 13-"Recarbonation", (1953).
Ellis et al., "Alkaline Scale Abatement by Carbon Dioxide Injection", Environmental Science & Technology, vol. 5, No. 4 at 350, (1971).
"The Effect of Plant Operating Conditions on Recirculating Brine pH, and the Effect of Brine pH on the Activity of Scale Control Activities"-Finan et al.-Ciba-Geigy (UK) Ltd., (1978)-Circular DB 6.7.
Mechanical Equipment Company, Inc.
Page Thurman K.
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