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where εp and ρp are the pellet porosity and density, respectively, εb is bulk porosity, v is the interstitial velocity, yi is the molar fraction of species i in the gas phase, T is the temperature of both gas and solid phases, P is the pressure and qi is loading of species i in the solid phase, R is the universal gas constant. To determine the mass transfer rate for the particle for each gas one parameter non- isothermal macro pore model was used. The mass transfer of species i between the solid and gas phase is defined given by Eq. (3): = ∗ ,− 3 , where kM,eff is the overall effectiv∗e macropore mass transfer coefficient, ∗ is the adsorbed equilibrium concentration, i.e., = , given by the isotherm and is the average adsorbed concentration. The overall effective macropore mass transfer coefficient is given by Eq. (4): kM,eff = 1 kM (4) RTρp ∂q* 1+ εp ∂PT,Pi ∗ where ρP is the particle density, εP is the particle porosity, , is the slope of the isotherm, kM macorpore mass transfer parameter. The fitting parameter for this model is kM. The equilibrium loading of component i, qi* is calculated from the Three Process Langmuir isotherm Eq. (5): Bi,k bi,k =bi,k,oexp T 3 bPq i,k i i,k,s ∑ k=11+∑(b P) where (5) q* = in = q * * T [ k = 1 t o 3 ] j,k j j=1 and q i,k,s is the saturation loadings of component i in mol/kg on sites k, Pi is the partial pressure of component I, is the temperature in K. The energy balance (E.B.) is expressed as Eq. (6): * i,k,s + q i,k,s where is the total loading of component i in mol/kg, n is the number of components, q i,k,st 8PDF Image | Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture
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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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