Simple Methodology To Quantify the Fragmentation on Batches of Char Pellets During Fluidized Bed Combustion

Abstract

A simple technique is used to determine the degree of fragmentation during the fluidized bed combustion of biochar pellets. From the analysis of the evolution of the overall resistance of combustion of batches of particles, composed alternatively by robust and fragile particles, kinetic and diffusive data for both types of particles were obtained. Subsequently, through the obtained combustion information, the degree of fragmentation of the fragile particles was determined. The experiments were carried out for bed temperatures of 700 and 800 °C, using Acacia dealbata char pellets.

The Experimental Analysis of Biochar Combustion in a Traveling Grate Furnace

“…Figure 1 shows the finalized Acacia dealbata char pellets in the three different sizes. The biochar exact dimensions were determined from digital photographs using the ImageJ software version 1.51, following the procedure referred to in a previous work [34]. For this purpose, each batch was weighed using a Sartorius BP 310P digital balance, from Sartorius, Göttingen, Germany, and labeled.…”