Numerical Simulation of the Multi-Component Slurry Gasification with the Non-Premixed Combustion Model

Abstract:

Considering the volumetric reactions and particle surface reactions in an entrained flow gasifier, the non-premixed combustion model based on the wet particles combustion method is adopted to simulate the multi-component slurry gasification process with FLUENT software. The velocity, temperature and concentration profiles of the gas products in the gasifier are obtained. Simulated results agree well with the commercial data, which verified the validity and applicability of the present model. Simultaneously, the reaction subarea in the gasifier has turned out to be obvious, the water evaporation, volatiles cracking and combustion reactions mainly appear in the jet region of the gasifier, the char gasification mainly appear in the freeboard region, but few reactions appear in the recirculation region. Moreover, with the increase of the mass fraction of the multi-component slurry, the content of the syngas at the gasifier outlet increases, while with the oxygen carbon atom ratio increasing, the syngas yield is rising early but declining later.

• Periodical: Advanced Materials Research (Volume 704)
• Pages: 326-331
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.704.326
• Online since: June 2013
• Authors: Xing Xing Li, Chun Hai Yi, Bo Lun Yang, Yong Zhang, Chang Gui Men, Gen Liang He, Hong Dong Xu
• Keywords: Multi-Component Slurry Gasification, Non-Premixed Combustion Model, Reaction Subarea, Simulation, Wet Particles Combustion Method

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