Temperature controlled adsorption for dehydration of water rich streams

A process for dehydration of an effluent stream from a fermentation process for the production of motor fuel grade ethanol, the process comprising:

• providing a process stream containing ethanol and water 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;
• generating heat of adsorption in the one or more adsorption flow passages;
• removing heat of adsorption by passing a cooling fluid through the one or more heat transfer flow passages;
• and
• producing an MFGE product stream containing less than 5% water by weight.

A process for dehydration of a water rich process stream, the process comprising:

• providing a 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;
• generating heat of adsorption;
• removing heat of adsorption by passing a cooling fluid through the one or more heat transfer flow passages;
• producing a dehydrated effluent stream;
• providing a second temperature controlled adsorber undergoing regeneration that is isolated from the process stream, where the second temperature controlled adsorber has one or more adsorption flow passages containing an adsorptive material coating and one or more heat transfer flow passages;
• providing a heating fluid to the one or more heat transfer flow passages of the second temperature controlled adsorber;
• regenerating the adsorptive material coating by removing water;
• and
• producing a cooled heating fluid and a water effluent stream.