Thermodynamic analysis of propane dry and steam reforming for synthesis gas or hydrogen production

Xiaodong Wang, Na Wang, Jie Zhao, Liang Wang

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Thermodynamics was applied to investigate propane dry reforming (DR) and steam reforming (SR). Equilibrium calculations employing the Gibbs free energy minimization were performed upon a wide range of pressure (1–5 atm), temperature (700–1100 K), carbon dioxide to propane ratio (CPR, 1–12) and water to propane ratio (WPR, 1–18). From a thermodynamic perspective, it is demonstrated that DR is promising for production of synthesis gas with low hydrogen content, as opposite to SR which favours generation of synthesis gas with high hydrogen content. Complete conversion of propane was obtained for the range of pressure, temperature, CPR and WPR considered in this study. Atmospheric pressure is shown to be preferable for both DR and SR. Approximately 10 mol of synthesis gas can be produced per mole of propane at a temperature greater than 1000 K from DR when CPR is higher than 6. The optimum conditions for synthesis gas production from DR are found to be 975 K (CPR = 3) for a H2/CO ratio of 1 and 1100 K (CPR = 1) for a H2/CO ratio of 2. The greatest CO2 conversion (95%) can be obtained also at 1100 K and CPR = 1. Preferential conditions for hydrogen production from SR are achieved with the temperatures between 925 and 975 K and WPRs of 12–18. The maximum number of moles of hydrogen produced is 9.1 (925 K and WPR = 18). Under conditions that favour hydrogen production, methane and carbon formation can be eliminated to negligible level.
Original languageEnglish
Pages (from-to)12800-12807
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number23
Early online date28 Sep 2010
DOIs
Publication statusPublished - Dec 2010

Fingerprint

synthesis gas
Synthesis gas
Steam reforming
hydrogen production
Reforming reactions
Hydrogen production
Propane
propane
steam
Thermodynamics
thermodynamics
Hydrogen
hydrogen
Temperature
temperature
Gibbs free energy
Atmospheric pressure
carbon dioxide
Carbon dioxide
atmospheric pressure

Keywords

  • propane
  • dry reforming
  • steam reforming
  • hydrogen
  • synthesis gas
  • thermodynamic analysis

Cite this

Thermodynamic analysis of propane dry and steam reforming for synthesis gas or hydrogen production. / Wang, Xiaodong; Wang, Na; Zhao, Jie; Wang, Liang.

In: International Journal of Hydrogen Energy, Vol. 35, No. 23, 12.2010, p. 12800-12807.

Research output: Contribution to journalArticle

Wang, Xiaodong ; Wang, Na ; Zhao, Jie ; Wang, Liang. / Thermodynamic analysis of propane dry and steam reforming for synthesis gas or hydrogen production. In: International Journal of Hydrogen Energy. 2010 ; Vol. 35, No. 23. pp. 12800-12807.
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AB - Thermodynamics was applied to investigate propane dry reforming (DR) and steam reforming (SR). Equilibrium calculations employing the Gibbs free energy minimization were performed upon a wide range of pressure (1–5 atm), temperature (700–1100 K), carbon dioxide to propane ratio (CPR, 1–12) and water to propane ratio (WPR, 1–18). From a thermodynamic perspective, it is demonstrated that DR is promising for production of synthesis gas with low hydrogen content, as opposite to SR which favours generation of synthesis gas with high hydrogen content. Complete conversion of propane was obtained for the range of pressure, temperature, CPR and WPR considered in this study. Atmospheric pressure is shown to be preferable for both DR and SR. Approximately 10 mol of synthesis gas can be produced per mole of propane at a temperature greater than 1000 K from DR when CPR is higher than 6. The optimum conditions for synthesis gas production from DR are found to be 975 K (CPR = 3) for a H2/CO ratio of 1 and 1100 K (CPR = 1) for a H2/CO ratio of 2. The greatest CO2 conversion (95%) can be obtained also at 1100 K and CPR = 1. Preferential conditions for hydrogen production from SR are achieved with the temperatures between 925 and 975 K and WPRs of 12–18. The maximum number of moles of hydrogen produced is 9.1 (925 K and WPR = 18). Under conditions that favour hydrogen production, methane and carbon formation can be eliminated to negligible level.

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