PROCESSOS PARA SEPARAR ÁGUA DE COMPOSTOS ORGÂNICOS, PARA EXTRAIR/SEPARAR POR MEMBRANA PARA SEPARAR ÁGUA DE COMPOSTOS ORGÂNICOS, E PARA PRODUZIR ETANOL, E MEMBRANA COMPÓSITA

摘要

Processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol.