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Pulse columns, commonly used as liquid-liquid contactors in irradiated fuels reprocessing plants, require mechanisms for generating the pulse within the column. Pulse generation using timed pulses of compressed air have been used in at least two reprocessing plants. Design of these air pulsers requires the solution of three coupled nonlinear differential equations. This paper gives the necessary differential equations for the system and presents methods for their solution, by numerical means.Solution requires the use of a digital computer. The computed results compare very favorably with measured results. Air pressure wave shapes, column pulse wave shapes, and characteristic operating curves are given for a typical pulse column-air pulser system.Qulse columns are commonly used~CCntactors for liquid-* liquid extraction, primarily in the reprocessing of irradiated nuclear fuels, (Sege and Woodfield, 1954;Gier,
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