Thermodynamic analysis of glycerin steam reforming

Wang, Xiaodong and Li, S. and Wang, H. and Liu, B. and Ma, X. (2008) Thermodynamic analysis of glycerin steam reforming. Energy and Fuels, 22 (6). pp. 4285-4291. ISSN 0887-0624

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Thermodynamic properties of glycerin steam reforming have been studied with the method of Gibbs free energy minimization for hydrogen and/or synthesis gas production. Equilibrium compositions including the coke-formed and coke-free regions were determined as a function of water/glycerin molar ratios (1:1−12:1) and reforming temperatures (550−1200 K) at different pressures (1−50 atm). Optimum conditions for hydrogen production are temperatures between 925 and 975 K and water/glycerin ratios of 9−12 at atmospheric pressure, whereas temperatures above 1035 K and water/glycerin ratios between 2 and 3 at 20−50 atm are suitable for the production of synthesis gas that favors both methanol synthesis and low-temperature Fischer−Tropsch synthesis. However, synthesis gas obtained from glycerin steam reforming is not feasible for direct use in high-temperature Fischer−Tropsch synthesis. Under these optimum conditions, carbon formation can be thermodynamically inhibited.

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Energy and Fuels
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23 Sep 2019 11:25
Last Modified:
22 Nov 2022 08:05