PRESSURIZATION AND BLOWDOWN OF ADSORPTION BEDS .2. EFFECT OF THE MOMENTUM AND EQUILIBRIUM RELATIONS ON ISOTHERMAL OPERATION

• Type: Article in International Scientific Journal
• Date: 1993

Authors

LU, ZP (Author) Other; José Miguel Loureiro (Author) FEUP; Alírio Rodrigues (Author) FEUP; LEVAN, MD (Author) Other

Journal

Title: Chemical Engineering Science

Vol. 48 No. 9

Pages: 1699-1707

ISSN: 0009-2509

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 20 Citations

Other information

Authenticus ID: P-001-N2Y

DOI: 10.1016/0009-2509(93)80129-e

Abstract (EN): Pressurization and blowdown of adsorption beds with a binary mixture of inert and adsorbable gas are studied. For pressurization, the stoichiometric penetration distance for the feed is predicted using a simplified analysis. An equilibrium model is then developed involving material and momentum balance equations to describe the bed dynamics. The pressure drop is given by Ergun's or Darcy's equations, and adsorption equilibrium is described by linear or Langmuir isotherms. The effects of pressure drop equation, isotherm shape, adsorbent capacity, pressure ratio and feed composition on penetration distance, pressurization time and pressurization amount are assessed. For blowdown, the equilibrium model is used to evaluate the bed dynamics. Also, plateau concentrations for blowdown, estimated using a simplified analysis, are compared with predictions of the equilibrium model.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9