Development of a Simulation Model for Fluidized Bed Mild Gasifier

<p>A mild gasification method has been developed to provide an innovative clean coal technology. The objective of this study is to developed a numerical model to investigate the thermal-flow and gasification process inside a specially designed fluidized-bed mild gasifier using the commercial CFD solver ANSYS/FLUENT. Eulerain-Eulerian method is employed to calculate both the primary phase (air) and secondary phase (coal particles). The Navier-Stokes equations and seven species transport equations are solved with three heterogeneous (gas-solid), two homogeneous (gas-gas) global gasification reactions. Development of the model starts from simulating single-phase turbulent flow and heat transfer to understand the thermal-flow behavior followed by five global gasification reactions, progressively with adding one equation at a time. Finally, the particles are introduced with heterogeneous reactions. The simulation model has been successfully developed. The results are reasonable but require future experimental data for verification.</p>

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis-Restricted

Discipline thesis:degree_discipline

Mechanical Engineering

Year

2010

Author dc:creator

• Mazumder, AKM Monayem Hossain

Contributors dc:contributor

• Wang, Ting
• Schilling, Paul
• Verges, Melody

• Clean coal technology
• coal gasification
• fluidized-bed
• mild gasifier
• CFD
• heterogeneous and homogeneous reaction
• finite rate model
• multi-phase flow

Repository record dc:identifier

https://scholarworks.uno.edu/td/101

OAI identifier oai:identifier

oai:scholarworks.uno.edu:td-1100