Method of adsorptive gas separation using thermally conductive contactor structure

摘要

A method of temperature swing adsorption allows separation of a first fluid component from a fluid mixture comprising at least the first fluid component in an adsorptive separation system having a parallel passage adsorbent contactor with parallel flow passages having cell walls which include an adsorbent material and axial thermally conductive filaments in direct contact with the adsorbent material. The method provides for transferring heat from the heat of adsorption in a countercurrent direction along at least a portion of the filaments during adsorption and transferring heat in either axial direction along the filaments to provide at least a portion of the heat of desorption during a desorption step. A carbon dioxide TSA separation process to separate carbon dioxide from flue gas also includes steps transferring heat from adsorption or for desorption along axial thermally conductive filaments.

主权项

1. A temperature swing adsorption method for separating a fluid mixture comprising at least first and second fluid components, the method comprising:
admitting said fluid mixture into an adsorptive separation system comprising at least one parallel passage adsorbent contactor, said parallel passage adsorbent contactor comprising
a plurality of substantially parallel fluid flow passages oriented in a first axial direction between an inlet and an outlet end thereof;cell walls situated between said fluid flow passages comprising at least one adsorbent material; anda plurality of axially continuous thermally conductive filaments oriented in said axial direction and in direct contact with said at least one adsorbent material; admitting said fluid mixture into said inlet end of said parallel passage adsorbent contactor to flow towards said outlet end in said first axial direction; adsorbing at least a portion of said first fluid component on said at least one adsorbent material; transferring heat from a heat of adsorption of said first fluid component on said at least one adsorbent material along at least a portion of said thermally conductive filaments in a second axial direction towards said inlet end and opposite to said first axial direction during said adsorbing step; recovering a first product fluid depleted in said first fluid component relative to said fluid mixture from said outlet end; desorbing at least a portion of said first fluid component adsorbed on at least one said adsorbent material by heating at least one said adsorbent material; transferring heat along at least a portion of said thermally conductive filaments in either of said first or second axial directions to provide at least a portion of the heat of desorption of said first fluid component during said desorbing step; and recovering a desorbed second product fluid enriched in said first fluid component from at least one of said inlet and said outlet ends.