Patent ID: 8901359
Filing Date: 2014-12-02
Classification: B01D,C07C

Abstract:
1. A process for the dehydration of a C 1-4 alcohol comprising the steps of: providing an adsorption bed having an adsorbent material; first contacting a feedstream comprising C 1-4 alcohol and water at a temperature above 260 degrees Fahrenheit with an adsorption bed at a first pressure for an adsorption phase time to produce a dehydrated alcohol stream; reducing the pressure of the adsorption bed to a second pressure for a blowdown phase time; second contacting the dehydrated alcohol stream with the adsorption bed for a purge phase time at a second pressure wherein the ratio of the purge phase time to an adsorption phase time is greater than 0.1; and increasing the pressure of the adsorption bed to the first pressure for a pressurization phase time.