Layered Vacuum Pressure Swing Adsorption for Biogas Upgrading

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Carlos Grande (Author) FEUP; Alírio Rodrigues (Author) FEUP

Journal

Title: Industrial & Engineering Chemistry Research

Vol. 46 No. 23

Pages: 7844-7848

ISSN: 0888-5885

Publisher: American Chemical Society

Indexing

ISI Proceedings

Scientific classification

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Resumo (PT): GAS; PSA; BEDS

Abstract (EN): Biogas is an important source of renewable raw methane that can be upgraded and applied as fuel for vehicles. One of the economic limitations of the upgrading relies in the bulk separation Of CO2. In a previous communication (Grande, C. A.; Rodrigues, A. E. Ind. Eng. Chem. Res. 2006, 46, 4595), we have compared the performance of equilibrium- and kinetic-based adsorbents for application in vacuum pressure-swing adsorption (VPSA) processes for biogas upgrading. The main disadvantage of using carbon molecular sieves (CMSs) is that less than 40% of the total capacity to remove CO2 is employed to satisfy purity requirements of methane product (> 98%) with direct impact in process productivity. In this work, we report a new adsorbent layer-in g strategy to improve the total productivity Of CO2 removal, resulting in a kinetic VPSA process with size reductions up to 60%.

Language: Portuguese

Type (Professor's evaluation): Scientific