PERIODIC STEADY-STATE SOLUTION TO PRESSURE SWING ADSORPTION WITH SHORT CYCLE TIME

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

TAKATOSHI MINODA¹  TSUTOMU HIROSE¹ 

[1] Department of Applied Chemistry, Kumamoto University

关键词: Adsorption;    Mass Transfer;    PSA;    Perturbation Method;    Gas Separation;   

DOI  :  10.1252/jcej.19.300

来源: Maruzen Company Ltd

【 摘 要 】

References(7)Cited-By(12)A set of differential equations describing the material balance of PSA operated at periodic steady state was expanded into a power series of small value of λ (= KAatc/ρs) and the following solution was derived for the average concentration of product CA1 and its swing ΔCA1. CA1= C(0)A1(1 + λ2H(2)), ΔCA1=λC(O)A1=M(1)in which C(0)A1 = (1 -η)/(1 -ηpD/PA), η = (1-E1)/(1 -E1uA/uD) M(1) = (1 -pD/pA)(1 - E2)/(KA/KD + uA/uD) In E1 = - (KAamL/uA)/(1-uA/uD)/(1+ KA/KD) lnE2=- (KAamL/uA)(KA/KD + uA/uD)/(1 + KA/KD)and H(2) is a function given in the text. Parameters KAa, L, m, p, u and ρs, respectively, are overall volumetric mass transfer coefficient, column length, adsorption coefficient, pressure, superficial gas velocity and bulk density. Subscripts A and D, respectively, refer to adsorption and desorption steps. The present analysis holds when λ<2 and the term λ2H(2) can be neglected when λ<0.5.

【 授权许可】

Unknown