Patent ID: 8067646

Claim:
A process for dehydration of a process stream for the production of motor fuel grade ethanol, the process comprising: separating a fermentation beer stream in a solids separation unit to provide a bottoms stream including solids, and a process stream including ethanol and water; providing the process stream to a first temperature controlled adsorber that is undergoing adsorption, where the first temperature controlled adsorber has one or more adsorption flow passages containing an adsorptive material coating and one or more heat transfer flow passages; passing the process stream through the one or more adsorption flow passages, where water is adsorbed by the adsorptive material coating to produce an MFGE product stream; generating heat of adsorption in the one or more adsorption flow passages; providing a cooling fluid to the first temperature controlled adsorber; removing heat of adsorption by passing a cooling fluid through the one or more heat transfer flow passages to produce a heated cooling fluid; and providing heat from the heated cooling fluid to a heat sink.