Ethylene oxide Selectivity Enhancement from Oxidation of Ethylene on Silver Catalyst By Mathematical Modeling [ READ ]
Adeyinka S. Yusuff, Abel A. Adeyi, Oseh O. Jeffrey
The selectivity enhancement of ethylene oxide from oxidation of ethylene on silver catalyst at various operating conditions was studied. The effects of two factors on the ethylene oxide selectivity and its reactor performance were examined. The first was the variation of selectivity with flow rate for different total feed rates at constant temperature, while the second factor was the variation of selectivity with oxygen conversion for different flow rates at constant temperature. A kinetic model based on the definition of selectivity was introduced. It was assumed that oxygen is basic for conversion, flow pattern is ideal, constant pressure drop across the reactor and selective reaction is accompanied by side-reaction. It was found that ethylene oxide selectivity decreases with increasing total feed rate while increases with increasing volumetric flow rate and fraction conversion of oxygen. Also, it was more enhanced at low temperature. Therefore, the selectivity of ethylene oxide and its reactor performance could be enhanced by operating its reactor at high volumetric flow rate, low feed rate, high oxygen conversion and low temperature.
Adeyinka S. Yusuff, Abel A. Adeyi, Oseh O. Jeffrey
The selectivity enhancement of ethylene oxide from oxidation of ethylene on silver catalyst at various operating conditions was studied. The effects of two factors on the ethylene oxide selectivity and its reactor performance were examined. The first was the variation of selectivity with flow rate for different total feed rates at constant temperature, while the second factor was the variation of selectivity with oxygen conversion for different flow rates at constant temperature. A kinetic model based on the definition of selectivity was introduced. It was assumed that oxygen is basic for conversion, flow pattern is ideal, constant pressure drop across the reactor and selective reaction is accompanied by side-reaction. It was found that ethylene oxide selectivity decreases with increasing total feed rate while increases with increasing volumetric flow rate and fraction conversion of oxygen. Also, it was more enhanced at low temperature. Therefore, the selectivity of ethylene oxide and its reactor performance could be enhanced by operating its reactor at high volumetric flow rate, low feed rate, high oxygen conversion and low temperature.
