Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1991-10-03
1995-08-15
Lander, Ferris
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423265, 252 82, 252391, 210697, C01B 2100
Patent
active
054417139
ABSTRACT:
The tendency of aqueous solutions of urea and other NH-containing compositions to force instability of hardness factors has been found to be detrimental to processes and apparatus employing them. The reliability of these processes and apparatus is improved by the inclusion of hardness-suppressing compositions, which preferably include both a water-soluble polymer and a phosphonate. In particular, agricultural and NO.sub.x -reducing applications are improved, especially for solutions containing urea hydrolysis products and the salts of them.
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Dubin Leonard
Epperly W. Robert
Sprague Barry N.
von Harpe Thure
Lander Ferris
Nalco Fuel Tech
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