LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION

PDF Publication Title:

LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION ( limits-small-scale-pressure-swing-adsorption )

Previous Page View | Next Page View | Return to Search List

Text from PDF Page: 061

The four terms in the model describe the following phenomena in order: 1) axial dispersion 2) convective flow 3) gas phase accumulation 4) adsorption rate (i.e. solid phase accumulation). The adsorption rate is often described using a linear driving force (LDF) model expressed as: 25 where ni* is the equilibrium value of component i in the adsorbed phase at a given fluid phase concentration, and ni is the adsorbed phase concentration of component i, both averaged over an adsorbent particle. The mass transfer coefficient (MTC), ki, of a spherical particle is typically approximated as:24 where kf, is the film transfer coefficient, rp and rc are the particle and crystal radius respectivley, Dp and Dc are the macropore and micropore diffusivity of component i respectively, εp is the particle macroporosity, and K is the dimensionless equilibrium constant related to the Henry constant, KH, by K= KHRTρp. The three terms on the right side of the equation account for resistance to mass transfer in the film, macropore and micropore respectively. Equation 3.13 is defined from a flux equivalency through the three resistances in series and is exact for linear isotherms in the Henry’s law region. While only strictly applicable to linear isotherms, it is a useful approximation for non- linear isotherms, especially to understand the relative importance of different resistances. If the macropore term is considered controlling, equation 3.13 simplifies to: 42

PDF Image | LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION

PDF Search Title:

LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION

Original File Name Searched:

Limits of Small Scale PSA_Aaron Moran.pdf

DIY PDF Search: Google It | Yahoo | Bing

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

Heat Pumps CO2 ORC Heat Pump System Platform More Info

CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)