Research-cottrell

Asim B Ray

Paul L Feldman

Richard S Atkins

Converting both organic and inorganic sulfur compounds in coal to removable forms utilizing electron beam irradiation. The removable forms of sulfur include elemental suflur, gaseous compounds, and water-soluble compounds. Coal is pulverized and slurried and introduced into the electron beam reaction chamber where the conversion reactions take place. As a further benefit, coal dechlorination inherently results.

Electron beam coal desulfurization

Coal is oxidized by NO.sub.x in the presence of a liquid in which NO.sub.x is soluble. Oxidized sulfur species are removed by washing with water and dilute sulfuric acid. NO.sub.x is not consumed in the process and is recycled. More than 70% of sulfur in coal is removed.

Process for desulfurization of coal

A regenerable process for removing SO.sub.2 from a gas comprising contacting the gas with an aqueous suspension of gelatinous aluminum hydroxide.

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Bridgewater, NJ, United States of America

Asim B Ray