TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION

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TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION ( temperature-swing-adsorption-processes-for-gas-separation )

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purification cycle can be executed quickly, improving the product yield for the same amount of adsorbent mass 15-fold over that of bed-based processes. Due to small mass transfer resistance between the microchannel and the adsorbent layer, adsorption and purge stage wave fronts are sharp, which enhances the product purity and CH4 recovery to 97% and above. Finally, this process is shown to work with water as the HTF at 90°C, obviating the use of electricity for its core operation. Such thermally driven separation systems can also utilize a part of the purified fuel they produce, reducing the need for subsystems for auxiliary operations. The primary distinctive feature of the present work is to pass the working and coupling fluids through the same channel, thus eliminating the need for dedicated HTF channels, which makes the purification systems much more compact. This not only reduces the system footprint, but also simplifies header design. This requires the Figure 1.5. Adsorbent bed design with alternate rows of adsorbent-coated and HTF microchannels (Pahinkar et al., 2016). 7

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TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION

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