A simple kinetic analysis of syngas during steam hydrogasification of biomass using a novel inverted batch reactor with instant high pressure feeding

Abstract

Highlights Inverted batch reactor with a high pressure feeding system for kinetics study.  Instant feedstock loading into a hot and pressurized reactor with agitation system.  The enhanced carbon conversion and char morphology indicated high heating rate.  Steam hydrogasification of biomass had comparatively lower CH4 activation energy. AbstractA newly designed inverted batch reactor equipped with a pressure-driven feeding system was built for investigating the kinetics of syngas during the steam hydrogasification (SHR) of biomass. The system could instantly load the feedstock into the reactor at high temperature and pressure, which simulated the way to transport the feedstock into a hot and pressurized gasifier. Experiments were conducted from 600 °C to 700 °C. The inverted reactor showed very high heating rate by enhancing the carbon conversion and syngas production. The kinetic study showed that the rates of CH4, CO and CO2 formation during SHR were increased when the gasification temperature went up. SHR had comparatively lower activation energy for CH4 production. The activation energies of CH4, CO and CO2 during SHR were 42.8, 51.8 and 14 kJ/mol, respectively.

Improved Bio-Oil Quality from Pyrolysis of Pine Biomass in Pressurized Hydrogen

“…In recent years, much research has focused on pyrolysis, gasification, liquefaction, combustion, and carbonization of biomass [5]. Among these research topics, pyrolysis has attracted extensive attention [6].…”