Betz Laboratories, Inc.

Donald F Jacques

Frederick C Klaessig

Charles E Schell

Dennis C Deegan

K Robert Lange

A method is disclosed for inhibiting soft scale precipitation in black liquor systems by adding thereto polyacrylic acid.

Method for treating black liquor using acrylic acid polymer

A method is disclosed for inhibiting soft scale precipitation in black liquor systems by adding thereto a treatment comprising in combination polyacrylic acid and methyl vinyl ether/maleic anhydride copolymer.

Polyacrylic acids and methyl vinyl ether/maleic anhydride copolymers as

A corrosion probe assembly for use in measuring corrosion and deposition rates for test specimens in corrodant electrolyte solutions is disclosed. The probe is designed for versatility, simplicity of construction, and serviceability and comprises a heated (hot) test specimen and, preferably, an unheated (cold) test specimen. Thus, the effects of heat load on the corrosion rates and on the deposition rates on various metallic surfaces can be readily determined. By sensing the inside temperature of the hot test specimen and the corrodant temperature, the heat transfer coefficient across the hot test specimen can readily be measured.

Corrosion probe for use in measuring corrosion rate under specified heat

Measuring corrosion rate under specified heat transfer conditions

A method for reducing the residual chromate level in effluent waters comprising catalytic reduction of the chromate ion by hydrogen to the trivalent chromium state and removal of the chromium by passage through a cation exchange resin column or by base precipitation in a settling pond.

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Cornwells Heights, PA, United States of America

Donald F Jacques