A Study of the Phase Equilibria of the Hydrogen—Carbon Monoxide—Propane System at Low Temperatures
One of the most common industrial processes involving low-temperature scrubbing for the purification of gases is the use of liquid nitrogen for the purification of hydrogen for ammonia synthesis. The scrub towers operate at 250 to 400 psi, with overhead temperatures in the vicinity of -320°F [1,2,3]. The hydrogen product contains about 10 to 13 mole % nitrogen as dictated by the equilibrium conditions at the top of the scrub towers. This nitrogen impurity can be tolerated because the final synthesis gas contains 25 mole % nitrogen.
KeywordsSolubility Parameter Virial Coefficient Virial Equation Ammonia Synthesis Propane System
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