Boiler and cooling water treatment

Programs such as phosphate and zinc treatments of boiler and cooling water require the use of appropriate polymer to demonstrate satisfactory corrosion control. These polymers also prevent bulk precipitation of the corrosion additives in the circulating water. Sulfonated copolymers have thus proven to be effective for both boiler and cooling water treatments. 

A novel sulfonated copolymer, claimed to be superior to the aforesaid sulfonated polymers, has been introduced for boiler and cooling water treatment [20]. The polymer is said to have a unique composition based on multiple sulfonic acid containing monomers which provide hydrophobic character and high charge density [20]. This composition has been shown to provide a range of exceptional properties. The new polymer demonstrates not only equivalent or better performance for calcium phosphate and zinc stabilization, but also superior thermal stability when compared to other sulfonated polymers. A notable property of the new polymer is its ability to disperse and resolubilize preexisting scale and corrosion product. 

Uses Scale inhibitor for boiler and cooling water treatment, aq. systems antiprecipitant dispersant for inorg. pigments, flat thru semigloss latex paints, caulks, sealants, paper industry food pkg. adhesives, coatings, paper... 

Uses Thickener, stabilizer, protective colloid for natural and syn. latexes for paints, films, coatings, and adhesives antiredeposition agents dispersant, antisealant for boiler and cooling water treatment, oil prod., laundry detergents, l l cleaners Alcosperse 459-N [Aico]... 

Uses Aniifoam, defoamer for pulp/paper mill systems, water-based coatings and adhesives defoamer for water treatment, industrial effluents, boiler and cooling water, and boil-out treatments Features For applies, where waxes, fats, or petrol, oils are undesirable penetrating and dispersing components aid corrosion resist, and in reducing org. deposits Regulatory FDA 21CFR 176.210... 

An ammonia plant needs water of two qualities process water for boilers and cooling water, Water-treatment installations do not produce harmful wastes. 

Uses Antifoam, defoamer for pulp/paper mill systems, aq. coatings and adhesives defoamer for water treatment. Industrial effluents, boiler and cooling water, and boil-out treatments... 

Uses Scale inhibitor, dispersant for water treatment, boiler and cooling water, boiler water (food contact), pulp and papermaking systems food-contact paper/ paperboard... 

Water Treatment Industrial CleaningPipplications. Boiler and cooling tower waters are treated with lignosulfonates to prevent scale deposition (78). In such systems, lignosulfonates sequester hard water salts and thus prevent their deposition on metal surfaces. They can also prevent the precipitation of certain iasoluble heat-coagulable particles (79). Typical use levels for such appHcatioas range from 1—1000 ppm. 

Phosphonic acid is an intermediate in the production of alkylphosphonates that are used as herbicides and as water treatment chemicals for sequestration, scale inhibition, deflocculation, and ion-control agents in oil weUs, cooling tower waters, and boiler feed waters. For example, aqueous phosphonic acid reacts with formaldehyde and ammonium chloride in the presence of hydrochloric acid to yield aminotri(methylenephosphonic acid) [6419-19-8]. 

Dispersible silicone emulsions are generally preferred for aqueous systems, whereas silicone fluids and compounds are preferred for non-aqueous systems. Silicones are widely employed in cooling water treatment programs, less so in boiler plants because of higher operating costs than available alternatives, but also because of sometimes questionable emulsion stability at higher temperatures. 

Wastewater streams from the utility functions include boiler and cooling tower blowdowns and waste brine and sludge produced by demineralizing and other water treatment systems. The quantity and quality of the wastewater streams depend on the design of the systems and the water source. These streams usually contain high dissolved and suspended solids concentrations and treatment chemicals from the boiler and cooling tower. The blowdown streams also have elevated temperatures. 

The water treatment plant which treats water from the Waitara River for use as boiler feedwater, cooling water make-up, and potable water,... 

Poly-l-lysine. See Polylysine Polymaleic acid CAS 26099-09-2 Formula [CHCOOHCHCOOHJx Hazardous Decomp. Prods. Heated to decomp., emits acrid smoke and irritating fumes Uses Scale inhibitor, dispersant in cooling water treatment, beet/cane sugar processing boiler water additive for food contact food processing aid... 

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