Bioethanol is produced through fermentation processes at very low concentrations. In order to be used as fuel in gasoline mixtures, it is necessary to have a purity of at least 99 wt.%. Both, separation and purification processes used are highly energy demanding, due to the presence of the azeotrope in the bioethanol - water mixture. A novel proposal is reactive dehydration with epoxides; however, without control the operation of the process cannot be guaranteed. Given this fact, this research presents, via dynamic simulation in Aspen Dynamics ® V8.8, the control systems for four reactive dehydration processes of bioethanol with ethylene oxide and propylene oxide, which support the operation of those technologies. It was found that it is possible to control the purity of bioethanol in reactive distillation by using temperature measures instead of compositions, thus reducing the dead times and allowing the control to be realizable.

生物乙醇是通过发酵过程产生的，浓度非常低。为了用作汽油混合物中的燃料，必须具有至少99重量％的纯度。由于在生物乙醇-水混合物中存在共沸物，因此所使用的分离和纯化过程都需要很高的能量。一种新的提议是用环氧化物进行反应性脱水。但是，如果没有控制，就无法保证过程的运行。鉴于这一事实，本研究通过在Aspen Dynamics®V8.8中进行动态仿真，提出了生物乙醇与环氧乙烷和环氧丙烷的四种反应脱水过程的控制系统，这些系统支持了这些技术的运行。