CFD Simulation of Syngas Combustion in a Two-Pass Oxygen Transport Membrane Reactor for Fire Tube Boiler Application

Te Zhao, Chusheng Chen and Hong Ye
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Te Zhao: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, China
Chusheng Chen: Collaborative Innovation Center of Chemistry for Energy Materials, Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
Hong Ye: Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, China

Energies, 2021, vol. 14, issue 21, 1-15

Abstract: The oxygen transport membrane reactor technology enables the stable combustion of syngas and reduction in NO x emission. Applying the syngas combustion membrane reactor to fire tube boiler can integrate oxygen separation, syngas combustion, and steam generation in a single apparatus. In this study, a CFD model for oxygen permeation and syngas combustion in a two-pass LSCoF-6428 tubular membrane reactor for fire tube boiler application was developed to study the effects of the inlet temperature, the sweep gas flow rate, and the syngas composition on the reactor performance. It is shown that the inlet temperature has a strong effect on the reactor performance. Increasing the inlet temperature can efficiently and significantly improve the oxygen permeability and the heat production capacity. A 34-times increase of oxygen permeation rate and a doubled thermal power output can be obtained when increasing the inlet temperature from 1073 to 1273 K. The membrane temperature, the oxygen permeation rate, and the thermal power output of the reactor all increase with the increase of sweep gas flow rate or H 2 /CO mass ratio in syngas. The feasibility of the syngas combustion membrane reactor for fire tube boiler application was elucidated.

Keywords: oxygen transport membrane reactor; syngas combustion; fire tube boiler; CFD simulation; thermal power (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: 2021
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