The use of a fluidized bed reactor or a more ethylene-selective catalyst could increase the production of ethylene per ethanol basis. Based on results of this initial simulation, several alternatives are discussed for increasing the process efficiency and profitability. The process was modeled using Aspen HYSYS simulation software to estimate mass and energy flows and equipment sizing requirements. The ethanol feed passes through two fixed-bed reactors, each packed with an aluminum oxide catalyst, and the resulting ethylene is purified by two flash tanks and by absorption with water. This process consumers 100,000 kg/hr of 95 wt% ethanol, 5 wt% water feedstock and produces 53,000 kg/hr of 99.7 wt% chemical-grade ethylene. The following report outlines the design and analysis of a process converting ethanol to chemical-grade ethylene via catalytic dehydration.
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