Abstract
Simultaneous optimization of EDC and ethane concentrations to maximize ethylene oxide production rate (rEO) over a commercial catalyst at 17.4 bar, 213–240 °C and in the GHSV range of 3000–5000 h−1 was done in this study. The feed composition and operating conditions were chosen similar to those in the industry, so that the findings are practical. EDC and ethane concentrations in the feed are merged into a practical parameter referred to as equivalent EDC (EDCeq) in this study which is indicative of the chlorinating power of the gas mixture. It was noticed that the higher the temperature, the higher the optimum EDCeq to maximize rEO. Although rEO had a decreasing trend versus EDCeq for 213 °C, it showed a maximum with EDCeq for 225 and 240 °C. While CO2 production rate (rCO2) monotonically decreased with EDCeq, EO selectivity experienced an upward trend with EDCeq, approaching a horizontal asymptote.
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