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monolith with porous adsorbent-binder matrix coated along the inner walls of each microchannel representing an MMM hollow fiber. This configuration is unique in that both the working fluid and the HTFs flow through the same microchannel, resulting in direct and simultaneous interaction of feed gas mixture and hot and cold HTFs with the adsorbent-polymer matrix. This design reduces heat and mass transfer resistances when compared to configurations in which heat is transferred across separate parallel channels (Pahinkar et al., 2016); thus increasing the possibility of reducing the system footprint with direct contact heat and mass exchange. The cycle has four stages, the first being the adsorption stage as shown in Figure 2.3(a), where CO2 is removed from CH4 by passing the feed gas through the adsorbent microchannel. The adsorption stage is followed by a desorption stage, in which the hot HTF enters the microchannel, heats the adsorbent, and desorbs the adsorbed gases. These desorbed gases are carried away with the hot liquid stream as shown in Figure 2.3(b). This concept could also be an improvement over more conventional PSA and TSA processes because the HTF serves the purpose of heating the adsorbent as well as that of a purge gas for partial pressure reduction and impurity removal, making this a ―pressure- enhanced temperature swing‖ process. After impurities are removed from the adsorbent, cold liquid is sent through the microchannel, which lowers the adsorbent temperature and prepares it for the next adsorption stage. The cooling stage is shown in Figure 2.3(c). After the adsorbent is cooled, the cold liquid is driven out of the microchannel by a purge gas, bled from the product stream. The purge gas is expected to displace the cold liquid in the microchannel and dry it by shearing the liquid attached to the microchannel walls as shown in Figure 2.3(d). In addition, after the liquid displacement is accomplished, the 20PDF Image | TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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