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U2A [Urea to Ammonia] A process for converting urea to ammonia for use in controlling emissions of NO
x
from industrial power units. It generates ammonia on demand, which is safer than transporting ammonia.
Developed by the Wahlco Air Systems division of Thermatrix, and Research-Cottrell.
Eur. Chem. News, 2000, 72(1898), 39.
UBC [Upgraded Brown Coal] A process for upgrading brown coal for use in power plants. The pulverized coal is
mixed with light petroleum and asphalt and heated to >140°C, which expels the water and solvent, leaving a porous
material containing asphalt in the pores. This material is briquetted and is then suitable for ...