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Hydrogen Production From Ethanol: A Thermodynamic Analysis of a Novel Sorbent Enhanced Gasification Process

[+] Author Affiliations
Madhukar R. Mahishi, Sanjay Vijayaraghavan, Dharendra Y. Goswami

University of Florida

Mojtaba S. Sadrameli

Tarbiat Modarres University

Paper No. IMECE2005-81458, pp. 455-463; 9 pages
doi:10.1115/IMECE2005-81458
From:
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Advanced Energy Systems
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 0-7918-4211-8 | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME

abstract

A novel biomass hydrogen production technique by integrating gasification and absorption reactions has been suggested. The method involves gasification of biomass in presence of a CO2 sorbent. Ethanol was used as the model biomass compound and CaO was the representative sorbent. Equilibrium modeling was used to determine the product gas composition and hydrogen yield. The analysis was done using ASPEN PLUS software (version 12.1) and Gibbs energy minimization approach was followed. The effects of temperature, pressure, steam/ethanol ratio and CaO/ethanol ratio on product yield were investigated. Three case studies were conducted to understand the effect of sorbent addition on hydrogen yield. Finally a simple energy analysis was carried out to determine the energy consumption and efficiency of sorbent enhanced ethanol gasification.

Copyright © 2005 by ASME

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