Abstract
AbstractBy use of the Benedict‐Webb‐Rubin (BWR) equation of state an attempt has been made to correlate experimental vapor‐liquid equilibrium data on hydrogen‐methane‐propane mixtures in the temperature range from 0° to −250°F. and pressure range from 500 to 1,500 lb./sq. in. abs. Considerable improvement in hydrogen K values has been obtained by adjusting the coefficient ν in the BWR equation for hydrogen. In the final adjustment it was necessary to specify a new value of ν for hydrogen at each temperature. The root‐mean‐square deviation of calculated from observed K values for hydrogen is 6.6%As a further check the recommended BWR coefficients for hydrogen have been used to calculate the low‐temperature hydrogen K values in mixtures with ethane and ethylene with good results.The predicted K values for propane at temperatures below −150°F. have not been altered and are still in error by as much as 2 orders of magnitude.
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