Master Thesis Defense | Ibrahim Alsheikh

Title

An Experimental Investigation of Soot Formation in Laminar Inverse Diffusion Flames and Normal Diffusion Flames at Elevated Pressure 


Ibrahim M. Alsheikh, Master Student supervised by Prof. William Roberts

Date: Thursday July 7, 2022

Time: 4 PM

Location: Building 5, Level 5, Room 5220

Abstract

Hydrogen production from autothermal reforming (ATR) with CCUS is gaining traction as prospect for a blue hydrogen economy. ATR is susceptible to catalyst poisoning and degradation  from soot formation, which decrease H2 yield. In this work soot formation was examined thoroughly in conditions close to ATR, using an oxygen rich inverse diffusion flame (IDF) burner at elevated pressure. normal diffusion flames (NDF) were also investigated against the same conditions to ultimately be compared alongside IDF. In NDF, soot formation and oxidation happen simultaneously, while in IDF soot oxidation is ignorable. Primary fuel was CO2 diluted methane, and the oxidizer stream has a 70%-by-mol O2 (30% N2) concentration. OH* chemiluminescence was used to find flame height against key parameters, PAH concentration and soot volume fraction were captured using Laser Induced Fluorescence (LIF) and Laser Induced Incandescence (LII) respectively. Key findings in this work were the dissimilarities between IDF and NDF against pressure and the effects of varying flame constituents on flame height in IDF.

Bio

Ibraheem Alsheikh is a Mechanical Engineering Masters student in the group of Prof. William L. Roberts working on soot laser diagnostics. He Obtained his Bachelors degree from the University of California at Irvine through the KAUST Gifted Students Program (KGSP). 

 

Event Quick Information

Date
07 Jul, 2022
Time
04:00 PM - 05:00 PM
Venue
Room 5220, Level 5, Building 5