Dec International, Inc.

Damrow Company, Inc.

Mark P Haak

Jack A Quee

A mixture of solids and a liquid such as a food product is sprayed into a chamber concurrently with a stream of hot gas to evaporate the liquid from the solids. Lecithin or other non-oxidative substance is sprayed into the chamber concurrently with the heated gas and mixture so the droplets of the substance can be put in contact with droplets of the mixture and the solid particles derived from the mixture. Thus, the solid particles are coated with the substance.

Spray drying method and apparatus for concurrent particle coating

Sulfur dioxides are dry scrubbed from a flue gas by introducing minute droplets containing a liquid, such as water, and an alkali or alkaline reactant, such as lime, into the spray zone in the primary spray drying chamber of a spray dryer and concurrently contacting these droplets with the hot flue gas. The droplets are partially dried to a tacky condition before reaching a foraminous collecting member extending through the primary spray drying chamber and collect on the collecting member as a moist, porous mat. As the flue gas continues to flow through the mat, the mat serves as a filter for removing fly ash and other particulate matter and remaining sulfur oxides react with unreacted particles of the reactant and reactive ingredients of the fly ash particles in the mat.

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Fond du Lac, WI, United States of America

Mark P Haak