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Products shall pack the guard bed and PSA vessels with fresh adsorbent. Air Products shall conduct a series of CO and H2S breakthrough tests with the PSA to determine the initial adsorption capacities. The mobile system will then be operated in cyclic mode with pressurized sour syngas from NCCC’s gasifier (taken after gas cooling and knockout of condensable species by NCCC). Air Products, or NCCC with Air Products’ guidance, will run the PSA in cyclic mode with sour feed gas for a total on-stream time of approximately eight weeks. The PSA operator will modify the feed gas rate to maintain a desired level of H2S in the PSA product gas. Air Products will then assess PSA stability and performance by evaluating the CO2 and H2S rejection and the CO and H2 recovery to the product gas. The breakthrough of benzene from the guard bed unit shall be monitored by gas chromatography (GC) to determine relative performance during the test period. NCCC or Air Products shall periodically withdraw gas samples to characterize the levels of H2, CO, CO2, H2S, and N2 in the feed, waste, and product gas streams. After consultation with NCCC to determine the most effective approach, Air Products or NCCC shall determine the fate of trace-level contaminants. At the end of the testing period, Air Products shall conduct a second set of CO and H2S breakthrough experiments to determine if the adsorption characteristics of the PSA have changed with exposure. Air Products will remove the guard bed and PSA adsorbent beds and ship them to Trexlertown for sample extraction and post-mortem studies of the adsorbent. Subtask 3.2. Conduct Post-Mortem Analysis. Air Products shall conduct lab tests, including thermo- gravimetric analysis (TGA), surface area analysis and chemical composition, to evaluate the relative condition of the exposed adsorbents. Air Products will conduct SIMPAC process simulations at the experimental conditions of the Sour PSA tests and compare the results with the observed performance. SIMPAC has been previously developed at private expense, and shall be considered as Restricted Computer Software for the purposes of this project. Test Unit Description The test unit consisted of a pretreatment skid followed by a PSA skid. The pretreatment skid containedPDF Image | Air Products Pressure Swing Adsorption at the National Carbon Capture Center
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