Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EFFECT OF FUEL MOISTURE AND AIRFLOW RATE ON COMBUSTION CHARACTERISTICS OF COCONUT SHELL IN A FIXED BED
Submission Author:
Kaio Pandolfi Pessotti , ES , Brazil
Co-Authors:
Kaio Pandolfi Pessotti, Joana Freitas Campana, Carlos Eduardo Silva Abreu
Presenter: Kaio Pandolfi Pessotti
doi://10.26678/ABCM.ENCIT2018.CIT18-0503
Abstract
This work evaluates the influence of air flow rate and fuel moisture on the combustion characteristics of the coconut shell and verify the economic feasibility of performing a pre-treatment of drying before burning. Therefore, experiments were carried out in a fixed bed reactor using grinded coconut shell. Before the experiments, the biomass characterization was performed through the proximate analysis, following the procedures of ASTM D1762-84. To prepare the biomass, the coconut shell was cut manually with scissors, and then 12.5 and 4mm sieves were used to standardize the grain size. Then, the combustion experiments were carried out in the reactor. Flow rates of 100, 130 and 160% of theoretical air will be used, and for the moisture analysis, the samples that dried for 1 and 2h in the oven will be compared with the samples without pre-drying. The partial results showed, through the immediate analysis, that the characteristics of the coconut shell are propitious to its burning due to the high content of volatile matter and fixed carbon. Through the temperature profile we observe the mechanisms occurring during the burning of the biomass and understand its processes.
Keywords
residue combustion, Biomass, coconut shell, fuel moisture, airflow rate
