Gasification and pyrolysis of different biomasses in lab scale system: A comparative study

Abstract

Abstract. Gasification and pyrolysis are very promising technologies for clean energy production especially from low rank fuels. Biomass and wastes with high chlorine, alkali and even heavy metals content are fuels preferential for thermal utilization. However, several problems during combustion in conventional steam boilers occurs e.g. slagging, fouling, chlorine corrosion, boiler efficiency deterioration. New efficient and cost effective technologies are needed, even in small-scale applications. The main objective of this work was to compare the thermochemical behaviour and process parameters effects of different biomass under air gasification and pyrolysis conditions. Three important fuels for European power industry were selected: woody biomass and two residual biomass, such as oat straw and dried citrus wastes. In order to evaluate the possibility to use different feedstocks or to combine and/or integrate them in thermochemical processes, a comparison among typical and untypical feedstocks is needed. Tests performed on small scale fixed bed reactor show the gas yield, its composition and LHV parameter. The results were performed in Royal Institute of Technology (KTH) in Sweden during BRISK program (Biofuels Research Infrastructure for Sharing Knowledge).

A comprehensive review on how ionic liquids enhance the pyrolysis of cellulose, lignin, and lignocellulose toward a circular economy

“…Pyrolysis has garnered considerable attention in recent years as an emerging thermochemical process and is a method that may be used for treating a broad range of complicated residues (Kim et al, 2020). Compared with gasification, pyrolysis does not have the problems of tar production, and a lower temperature is required (300 C-600 C) (Gądek et al, 2016). Also, due to pyrolysis being performed in an inert condition, the generation of polluting gases such as NO x , CO 2 , and SO 2 is prevented, which shows its environmental superiority over the other two thermochemical methods mentioned (Basu, 2018).…”

“…Tar is a complex mixture of condensable hydrocarbons that cause technical problems such as the blockage of filters and fuel lines (Font Palma, 2013). Also, gasification requires a high temperature (700°C–1200°C) which is not economically desirable (Gądek et al, 2016). Pyrolysis has garnered considerable attention in recent years as an emerging thermochemical process and is a method that may be used for treating a broad range of complicated residues (Kim et al, 2020).…”

Waste to Energy: Investigation of Characteristics and Thermal Behaviors of Wastes

“…Numerous studies of characteristics and thermal behaviors have been conducted on various types of waste, for instance, pyrolysis and gasification of corn wastes [5], woody biomass, oat straw, dried citrus waste [6] as well as food waste [7]; co-pyrolysis of raw/terrified wood and coal blends [8]; pyrolysis of paper waste [9], [10]; combustion on wood pellet and sawdust [11] and municipal waste [12], [13]; gasification of rice husk [14], bagasse [15] and municipal solid waste [16]. Nevertheless, due to the wide variation in the nature of different waste sources, the existing data regarding municipal, agricultural and industrial wastes is still very small and fragmented.…”

On the wake effect in wind farm power forecasting: a new data-driven approach

“…Renewable technologies, such as solar energy [2], biomass energy conversion systems [3][4][5], and especially wind power plants [6], are usually considered to be less efficient than traditional conversion systems because of the inherent random nature of the primary renewable source. This implies some difficulties to forecast energy production of such complex systems.…”