Pressure Swing Adsorption: A Review of UK Patent Literature

Separation of Oxygen from Air Using Coordination Complexes: A Review

“…Usually, the production step is taking place at the highest pressure and the bed is regenerated by decreasing the partial pressure of the adsorbed component in the gas phase in contact with the solid, at least in part by dropping the pressure to lower pressures or eventually to the lowest limit. Several good books (Ruthven, 1984;Yang, 1987; Wankat, 1986; Vansant and Dewolfs, 1990;Rodrigues et al, 1989;Rousseau, 1987) and numerous reviews (Suzuki, 1988;Ray, 1986;Tandeur and Wankat, 1985;Riquarts and Leitgeb, 1985;Richter, 1987;Kawai and Kaneko, 1989;Lee and Stahl, 1973; Sircar and Kratz, 1988;Sircar, 1988;Jasra et al, 1991) on PSA technology have already been published. Several PSA models have also been reported including pressure drop effects (Sundaram and Wankat, 1988), heat effect (Farooq et al, 1988), mass transfer (Raghavan and Ruthven, 1985), micropore diffusion (Doong and Yang, 1986; Raghavan et al, 1986), multicomponent mixtures (Yang and Cen, 1986), and nonlinear equilibrium (Underwood, 1986).…”

Production of carbon molecular sieves from Illinois coal. [Quarterly] technical report, March 1, 1993--May 31, 1993

“…The desorptionstep regeneratesthe carbon surface for reuse in the subsequent adsorption step. An adsorption process consists of a cyclic sequence of adsorption and desorption steps; when desorption is achieved by decreasingthe pressure, the process is called pressure swing adsorption (Keller, 1983;Ray, 1986;Suzuki, 1988).…”

“…Production of industrial gases by noncryogenicmethods, e.g., pressure swing adsorption(PSA), is expected to grow much faster than by the conventionalmethod, cryogenicdistillation (Keller, 1983). Although there is some room for improvement in the design and operation of PSA processesfor gas separation,most gains in processefficiencywill likely come about from the developmentof new and improved adsorbent materials (Ray, 1986;Jasra et al, 1991). Commercialinterest in carbon molecular sieves is growingand these materials are currently being used to replace less efficient adsorbents (e.g., zeolites) in industrial gas separation processes.…”

Production of carbon molecular sieves from Illinois coal. Technical report, December 1, 1992--February 28, 1993

“…Productionof industrial gases by noncryogenic methods, e.g., pressure swing adsorption (PSA), is expected to grow much faster than by the conventionalmethod, cryogenicdistillation (Keller, 1983). Although there is some room for improvement in the design and operation of PSA processesfor gas separation,most gains in process efficiencywill likely come about from the development of new and improved adsorbent materials (Ray, 1986;Jasra et al, 1991). Commercialinterest in carbon molecular sieves is growing and these materialsare currently being used to replace less efficient adsorbents (e.g., zeolites) in industrialgas separation processes.…”