Pyrolysis of sugarcane bagasse in a fixed bed reactor: Influence of operational conditions in the distribution of products

Abstract

This work experimentally evaluated the pyrolysis of sugarcane bagasse in a fixed bed reactor in order to obtain products useful in energy applications. The raw material was characterized to understand its behaviour during the thermal degradation process. The effects of operating conditions on mass yields of bio‐oil, biochar, and non‐condensable gases were investigated. The operating variables studied were temperature (400 to 700 °C), particle size (<0.5 mm, 0.5–1.0 mm, and 1.0–1.41 mm), heating rate (5, 10, and 15 °C/min), and nitrogen flow (50, 100, and 200 mL/min). Analysis of variance showed that for almost all product mass yields, with the exception of the effect of nitrogen flow in bio‐oil yield, the treatment levels result in different means. The highest bio‐oil yield (0.54 g/g) occurred at 600 °C, at a heating rate of 15 °C/min, at a flow rate of 200 mL/min, and for a particle size of 0.5 to 1.0 mm. The process temperature and particle size were the most influential factors in the results.

Biomass co-pyrolysis: Effects of blending three different biomasses on oil yield and quality

“…Pyrolysis is a decomposition process that occurs with heat in an oxygen-free environment. In the pyrolysis process, the lignocellulosic biomass that contains cellulose, hemicellulose, and lignin is transformed into carbon-rich solid (char) and liquid (bio-oil) products (Gonçalves et al, 2017; Hopa et al, 2016; Naqvi and Naqvi, 2018; Yusup et al, 2015). Co-pyrolysis and pyrolysis are the same process; the only difference is that two or more different substances are used as raw material in co-pyrolysis.…”

Evaluation of hydrothermal sugarcane bagasse treatment for the production of xylooligosaccharides in different pressures

“…(Ehman et al, 2020;Miranda, Bica, Nachtigall, Rehman, & Rosa, 2013). After this peak, there is an exothermic rise close to 400 C attributed to the degradation of lignin (Gonçalves et al, 2017;Miyahara et al, 2018). In this way, it is suggested that these differences in the FTIR spectra and thermal behavior represent effects of solubilization and concentration of biomass components, with no chemical changes during the hydrothermal process.…”

Sugarcane bagasse-based biochar and its potential applications: a review

“…The high levels of carbon in biochar are correlated with the elevated trends in fixed carbon. Furthermore, due to the presence of mineral components remaining after carbonization, biochar exhibits higher ash levels (up to 23 wt%) compared to bagasse (1-6%) [79,[81][82][83][84][85]. Lastly, in contrast to bagasse, which typically contains volatile matter levels of up to 85 wt%, biochar displays a reduced volatile matter content of up to 57 wt%.…”