Betz Laboratories, Inc.

Other

Gene A Merrell

Deborah L Purnell

Richard J Sujdak

A process for detackifying paint in a wet paint spray booth wherein water is used to wash the air containing oversprayed paint from the paint spray operation. The process comprises forming stable colloid solutions consisting of weakly electropositive metals. Additionally, to activate the metal cation, various anionic or cathionic polymers may be selected and used.

Lyophobic detackifiers

A process for detackifying paint, lacquer or enamel in a paint spray booth in which water is used to wash the air containing oversprayed paint, lacquer or enamel particles. The process comprises adding to the wash water a sufficient amount for the purpose of a cationic organic polymer and a selective anionic organic polymer. The process is particularly adaptable to activator catalyzed treatment programs in which the inorganic anion is lost as a precipitate due to adverse conditions such as increasing wash water acidity. The substitution of an organic anionic polymer for the inorganic anion alleviates this problem.

Organic polymer activator for detackification

A process for detackifying and coagulating paint in a wet paint spray booth wherein water is used to wash the air containing oversprayed paint from the paint spray operation. The process comprises forming stable colloid solutions consisting of weakly electropositive metals. Additionally, to activate the metal cation, various anionic or cationic polymers may be selected and used.

This invention relates to an improved method for treating paint wastes and paint oversprays encountered in wet paint spray booths or any areas where these wastes and oversprays exist.

Paint spray booth treatment

In a coal fired boiler of the type having a combustion zone in which said coal is fired, a convection zone located downstream from said combustion zone and having a plurality of heater tubes disposed therein adapted to heat water or steam disposed therein, and in which convection zone combustion residues emanating from said coal have a tendency to stick to or agglomerate upon said tubes, a method of decreasing said tendency to stick or agglomerate, comprising burning said coal in the presence of an additive consisting essentially of super large magnesium oxide particles, a major mass fraction of which is about 150 microns in diameter or greater.

Method of conditioning fireside fouling deposits using super large

In a solid fuel furnace, such as a boiler, having a combustion zone in which the fuel is fired, a convection zone located downstream from said combustion zone and having a plurality of heater tubes disposed therein adapted to heat water or steam disposed therein, and in which convection zone combustion resides emanating from said solid fuel have a tendency to stick to or agglomerate upon said tubes, a method of decreasing said tendency to stick or agglomerate, comprising burning said fuel in the presence of a chromium containing compound adapted to form a chromium oxide compound upon combustion thereof.

Method of reducing fireside deposition from the combustion of solid fuels

In a coal fired boiler of the type having a combustion zone in which said coal is fired, a convection zone located downstream from said combustion zone and having a plurality of heater tubes disposed therein adapted to heat water or steam disposed therein, and in which convection zone combustion residues emanating from said coal have a tendency to stick to or agglomerate upon said tubes, a method of decreasing said tendency to stick or agglomerate, comprising burning said coal in the presence of an additive consisting essentially of amorphous silica particles, substantially all of said particles being greater than about 30 microns in diameter.

Method of conditioning fireside fouling deposits using large particle

In a coal fired boiler of the type having a combustion zone in which said coal is fired, a convection zone located downstream from said combustion zone and having a plurality of heater tubes disposed therein adapted to heat water or steam disposed therein, and in which convection zone combustion residues emanating from said coal have a tendency to stick to or agglomerate upon said tubes, a method of decreasing said tendency to stick or agglomerate, comprising burning said coal in the presence of an additive consisting essentially of amorphous silica particles, substantially all of said particles being greater than about 38 microns in diameter.

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Huntingdon Valley, PA, United States of America

Gene A Merrell