In October, Bio4Fuels subproject 4, Gasification Processes, published an article titled “Numerical simulation of lignin gasification: The role of gasifying agents in entrained-flow reactors”.
Our findings reveal that air, due to nitrogen dilution, results in suboptimal lignin-to-syngas conversion, yielding lower energy content and hydrogen production. In contrast, steam enhances conversion efficiency, significantly increasing hydrogen output and LHV. CO2 as a gasifying agent boosts carbon monoxide levels through interactions with solid carbon, leading to a higher energy content in the syngas. The CO2-steam mixture is particularly effective, producing syngas with a high hydrogen concentration, primarily due to the water–gas shift reaction and steam’s reaction with the lignin carbon.
Read the article in Thermal Science and Engineering Progress, Volume 55