Evaporation of liquids with dispersant added

Details Evaporation of liquids with dispersant added Evaporation of liquids with dispersant added

1988-04-29

1992-10-20

Manoharan, Virginia

Concentrating evaporators

Processes

159 274, 159901, 159DIG2, 159DIG8, 159DIG13, 159DIG16, 159DIG38, 202174, 202237, 202264, 203 1, 203 7, 203 11, 203 22, 203 24, 203 25, 203 40, 203 92, 203 95, 203DIG8, 203DIG17, B01D 106, B01D 126, B01D 334, B01D 342

Patent

active

051567067

ABSTRACT:
A vertical tube evaporation process for the concentration of saline water and other liquids, including the addition of an anionic mono-molecular dispersant thereto which interacts with materials precipitated during concentration and inhibits the formation of scale or fouling depositions on evaporator surfaces, and wherein the additive is incorporated into the precipitated materials and improves their removal during the descaling or defouling of evaporator surfaces by rendering such precipitates redispersable in fresh water or in a non-saturated liquid used for descaling or defouling of evaporator surfaces.

REFERENCES:
patent: 2181146 (1939-11-01), Peebles et al.
patent: 2672926 (1954-03-01), Cross
patent: 3132064 (1964-05-01), Scheffers
patent: 3243359 (1966-03-01), Schmidt
patent: 3846254 (1974-11-01), Sephton
patent: 3880702 (1975-04-01), Troshenkin et al.
patent: 3932224 (1976-01-01), Hirota et al.
patent: 3974039 (1976-08-01), Frohner et al.
patent: 3997408 (1976-12-01), Barba et al.
patent: 4201669 (1980-05-01), Becker
patent: 4255259 (1981-03-01), Hwa et al.
patent: 4677168 (1987-06-01), Hoy et al.
patent: 4861512 (1989-08-01), Gosselink
Stickney et al., "Treating Chemical Wastes by Evaporation", Chemical Engineering Progress, Apr. 1976, pp. 41-46.
Sephton, "Renovation of Power Plant Cooling Tower Blowdown . . . ", EPA-600/7-77-063, Jun. 1977, pp. 12-17.

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