Enhancement of hydrogen production in a modified moving bed downdraft gasifier – A thermodynamic study by including tar

Challenges and Opportunities of Modeling Biomass Gasification in Aspen Plus: A Review

“…Tar formation , , , , was included in several studies though it was either considered as an inert compound or the comparison of the tar yields was not incorporated in the validation studies. For instance, tar formation in the pyrolysis stage was included in an Aspen Plus model for a two‐stage biomass pyrolysis and gasification using three different microalgae as feedstocks.…”

“…In another study , the focus of the model was the investigation of the gasifying agent injection through various zones for an effective tar cracking process at high temperatures. Tar was represented as C 4 H 4 O based on the literature , .…”

“…Even though each study handles the modeling process from a different technological perspective, the main goal is the development of a realistic process model with high efficiency and product quality. The number of studies dealing with biomass gasification has significantly increased, especially within the last decade , and there are many review studies based on a variety of aspects . However, as compiled in Tab.…”

Biochemical Conversion of Microalgae Biomass into Biofuel

“…However the main challenge of gasification is to avoid tar (a mixture of complex compounds) formation in the gasified products because this causes fouling in the pipes, filters, turbines, or gas engines , . As such, tar formation reduces the overall efficiency of gasification of the microalgae biomass.…”

CO2 gasification of microalgae (N. Oculata) – A thermodynamic study

“…The gasifying agent has a considerable effect on the producer gas composition. [3], [4] and [5,6] reported the injection of steam to the gasifier enhanced the H2 production in the producer gas. The use of CO2 as a gasifying agent attracts the attention of some researchers.…”