High Quality Syngas Production with Supercritical Biomass Gasification Integrated with a Water–Gas Shift Reactor

M. M. Sarafraz, Mohammad Reza Safaei, M. Jafarian, Marjan Goodarzi and M. Arjomandi
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M. M. Sarafraz: School of Mechanical Engineering, University of Adelaide, Adelaide, Australia
Mohammad Reza Safaei: Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
M. Jafarian: School of Mechanical Engineering, University of Adelaide, Adelaide, Australia
Marjan Goodarzi: Department of Mechanical Engineering, Lamar University, Beaumont, TX 77705, USA
M. Arjomandi: School of Mechanical Engineering, University of Adelaide, Adelaide, Australia

Energies, 2019, vol. 12, issue 13, 1-14

Abstract: A thermodynamic assessment is conducted for a new configuration of a supercritical water gasification plant with a water–gas shift reactor. The proposed configuration offers the potential for the production of syngas at different H 2 :CO ratios for various applications such as the Fischer–Tropsch process or fuel cells, and it is a path for addressing the common challenges associated with conventional gasification plants such as nitrogen dilution and ash separation. The proposed concept consists of two reactors, R 1 and R 2 , where the carbon containing fuel is gasified (in reactor R 1 ) and in reactor R 2 , the quality of the syngas (H 2 :CO ratio) is substantially improved. Reactor R 1 is a supercritical water gasifier and reactor R 2 is a water–gas shift reactor. The proposed concept was modelled using the Gibbs minimization method with HSC chemistry software. Our results show that the supercritical water to fuel ratio (SCW/C) is a key parameter for determining the quality of syngas (molar ratio of H 2 :CO) and the carbon conversion reaches 100%, when the SWC/C ratio ranges between two and 2.5 at 500–1000 °C.

Keywords: supercritical water gasification; water–gas shift reactor; biomass gasification; syngas quality (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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