The highest ethylene yield 97% was observed at HTS temperature 420 ◦ C, which corresponds to the ethanol conversion X = 98.7% and ethy- lene selectivity S = 98.2%.
The increase in superficial gas velocity from 0.6 to 1.0 m/s leads to the decrease in residence time required for achievement of 98% ethanol conversion which is explained by intensification of the radial thermal conductivity in the catalyst bed. Also, superficial gas velocity strongly influences on the number of tubes and the cata- lyst weight in reactor: the maximal possible superficial gas velocity is favorable for reactor simplification and diminishing the catalyst weight.
Finally, the optimal characteristics and process parameters of industrial tubular fixed bed reactor for ethylene production from bioethanol at capacity 60,000 TPA have been determined (see Table 6).