Chao-Seader (K-value) property package

Semi-empirical K-value method for hydrocarbon / hydrogen-rich systems (hydrotreaters, reformers, hydrocrackers) — Curl-Pitzer liquid fugacity, regular-solution activity, SRK vapor fugacity (Chao-Seader 1961). The Grayson-Streed H2/CH4 special coefficients are a follow-up; light-gas K is approximate. SRK enthalpy/density.

Flowsheets that use it