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Abstract

A pre-pilot plant facility for the thermal fixation of atmospheric nitrogen has been successfully built and operated.

Gas temperatures exceeding 3000°K. have been reached but the quenching rates available to fix the nitric oxide were found to be inadequate for the gases at these high temperatures. However, yields of 3.7 nitric oxide by volume have been realized experimentally.

A separate water cooled sampling probe inserted at the top of the furnace gave quenching rates of the order of 10°C./sec. This also permitted the study of the effect of variation in the quenching rate while maintaining other conditions constant. The oxygen concentration appeared to have less effect than previous results indicated, but this may have been due to uncertainties in estimating gas temperatures near 3000°K.