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Energy Efficiency of Gas Separation Pressure Swing Adsorption

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Energy Efficiency of Gas Separation Pressure Swing Adsorption ( energy-efficiency-gas-separation-pressure-swing-adsorption )

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the entire pressure range and the limits of integration are PH and PL. WB dP (3.21) i-pi (3.20) Iy) .y0 -h If Po is greater than both PH and PL , work is required to evacuate the bed over Equation (3.21) is again solved simultaneously with Equation (3.20). This must be done numerically (by Mathcad). At the end of this step, the mole fraction in the bed is found from Equation (3.20), with P = PL. This mole fraction is important for the next step, in which the bed is purged of the remaining heavy gas. yB=y{PL) (3.22) The number of moles of heavy and light gas that leave the bed can be found by mtegrating the flow out of the bed. The change in mole fraction must be taken into account, so the following equations must be solved simultaneously with Equation (3.20). N BDA - f p, y sVB dP p, (3.23) (3.24) NBDB '" R T 0 [l+ (/3-l)y] dP B 53

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Energy Efficiency of Gas Separation Pressure Swing Adsorption

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