A MECHANISTIC STUDY OF PHOSPHINOCARBOXYLIC ACID FOR BOILER DEPOSIT CONTROL

A laboratory study was conducted to identify the key properties of pho sphinocarboxylic acid polymers in controlling boiler water deposits, i ncluding their ability to transport iron; disperse boiler water sludge containing iron oxide, silica, and calcium phosphate; and dissolve de posits. The thermal and hydrolytic stability of the polymers was inves tigated in autoclave studies up to 1,500 psig, Performance testing sho wed their inherent thermal stability makes phosphinocarboxylic acid po lymers effective in maintaining deposit control in a boiler.