Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-11-17
1977-06-14
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
252180, C02B 506
Patent
active
040295770
ABSTRACT:
The present invention relates to processes for controlling the formation and deposition of scale and/or suspended solid matter which otherwise would occur in aqueous mediums containing scale imparting ions and dispersed particles. The invention, more particularly, relates to the control of the formation of, the reduction and/or the prevention of the deposition of calcium phosphate, magnesium silicate and/or iron oxide, clay and mixtures thereof in cooling water, scrubber and steam generating systems, evaporators, economisers and the like by the introduction of an effective amount for the purpose of a water soluble polymer composed primarily of moieties derived from acrylic acid or water soluble salt thereof and hydroxy lower alkyl acrylate moieties or water soluble salt thereof to the water used therein. The polymers discovered to be effective for the purpose are those preferably having a mole ratio of from about 34 : 1 to about 1 : 4 of acrylic acid to hydroxylated lower alkyl acrylate moieties. The lower alkyl is an alkyl of from 2 to 6 carbon atoms.
REFERENCES:
patent: 3463730 (1969-08-01), Booth
patent: 3663448 (1972-05-01), Ralston
patent: 3790610 (1974-02-01), Lum et al.
patent: 3880765 (1975-04-01), Watson
Godlewski Irene T.
Libutti Bruce L.
Schuck Joseph J.
Betz Laboratories Inc.
Markowitz Steven H.
Ricci Alexander D.
Wyse Thomas G.
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