THERMALLY INTEGRATED ADSORPTION-DESORPTION SYSTEMS AND METHODS

摘要

High volumetric-efficiency thermally integrated systems for capturing a target gas from a process gas stream include a monolithic body and a distribution system. The monolithic body includes a first plurality of channels and a second plurality of channels each having sorbent surfaces that reversibly adsorb the target gas. The channels are in thermal communication such that heat from an exothermic adsorption of target gas in one plurality of channels is used by an endothermic desorption of target gas from the other plurality of channels. Methods for separating a target gas from a process gas stream include switching the high volumetric-efficiency thermally integrated systems between a first state and a second state. In the first state, the first plurality of channels undergoes desorption while the second undergoes adsorption. In the second state, the second plurality of channels undergoes desorption while the first plurality undergoes adsorption.

主权项

1. A method for separating a target gas from a process gas stream, the method comprising:
performing a first stage comprising simultaneously:
flowing a purge stream through a first plurality of discrete channels of a monolithic body to cause the target gas to desorb endothermically from sorbent surfaces of the first plurality of discrete channels and enter into the flowing purge stream, andflowing the process gas stream through a second plurality of discrete channels of the monolithic body to cause the target gas to adsorb exothermically into sorbent surfaces of the second plurality of discrete channels; and performing a second stage comprising simultaneously:
flowing the process gas stream through the first plurality of discrete channels to cause the target gas to adsorb exothermically into the sorbent surfaces of the first plurality of discrete channels, andflowing the purge stream through the second plurality of discrete channels to cause the target gas to desorb endothermically from the sorbent surfaces of the second plurality of discrete channels and enter into the flowing purge stream; and collecting at least a portion of the target gas in the flowing purge stream; wherein individual channels of the first plurality of discrete channels are in thermal communication with individual channels of the second plurality of discrete channels, and the first plurality of discrete channels are not in fluidic communication with any of the second plurality of discrete channels.