Adsorbent and adsorbent bed for materials capture and separation processes
A method device and material for performing adsorption wherein a fluid mixture is passed through a channel in a structured adsorbent bed having a solid adsorbent comprised of adsorbent particles having a general diameter less than 100 um, loaded in a porous support matrix defining at least one straight flow channel. The adsorbent bed is configured to allow passage of a fluid through said channel and diffusion of a target material into said adsorbent under a pressure gradient driving force. The targeted molecular species in the fluid mixture diffuses across the porous support retaining layer, contacts the adsorbent, and adsorbs on the adsorbent, while the remaining species in the fluid mixture flows out of the channel.
1. A flow reactor system for adsorption and desorption characterized by
a structured adsorbent bed comprising a solid adsorbent having nanocrystallized zeolite-alkali earth metal adsorbent particles having a general diameter less than 500 nm, loaded in a porous support matrix defining at least one straight flow channel, said adsorbent bed configured to allow passage of a fluid through said channel and diffusion of a target material into said adsorbent.
2. The structured adsorbent bed of claim 1 wherein said adsorbent material comprises NaZSM-5 and silicalite.
3. The structured adsorbent of claim 1 wherein the solid adsorbent is loaded to a thickness of less than 3 mm, the porous support has a mean pore size between 1 to 30 um and a porosity of between 25 to 60%.
4. The structured adsorbent bed of claim 1 wherein said structured adsorbent bed enables CO2 capture in a CO2-containing gas mixture in a residence time of less than one second.
5. The structured adsorbent bed of claim 4 wherein said structured adsorbent bed enables CO2 capture at a gas superficial linear velocity of 1 cm to 20 m/s and pressure drop less than one bar.
6. A structured adsorbent bed comprising
a solid adsorbent comprised of adsorbent hydride particles having an average diameter between 10 and 500 nms, loaded in a porous support matrix defining at least one straight flow channel, said adsorbent bed configured to allow passage of a fluid through said channel and diffusion of a target material into said adsorbent.
7. The structured adsorbent bed of claim 6 wherein said channel has a hydraulic diameter from about 0.3 to 10 mm.
8. The structured adsorbent bed of claim 6 wherein said solid adsorbent is loaded to a thickness of less than 10 mm.
9. The structured adsorbent bed of claim 6 wherein said solid adsorbent is loaded to a thickness of less than 3 mm.
10. The structured adsorbent bed of claim 6 wherein said porous support has a mean pore size between 0.05 um to 100 um and a porosity of between 25 to 90%.