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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
A REVIEW OF NUMERICAL MODELING OF BIOMASS COMBUSTION IN GRATE-FIRED BOILERS
Submission Author:
Moisés Sousa , PA
Co-Authors:
Moisés Sousa, Leandro Rogel Silva, Felipe Augusto Menon, Edson Bazzo
Presenter: Moisés Sousa
doi://10.26678/ABCM.ENCIT2020.CIT20-0526
Abstract
CFD is a tool that has been widely used for the design and solution of specific problems in steam generators due to its versatility and lower costs when compared to measurements and experiments; it reduces solution times and allows the visualization of temperature, flow and species profiles in the simulation of a variety of flow conditions and types of fuels. The objective of this work is to present a literature overview of different results obtained from CFD simulations of grate-fired furnaces, reviewing its application in the development of boilers, such as in the investigation of primary pollutant emissions, deposit formation and corrosion. In most of the gathered data, a commercial software was coupled with specific mathematical models for the solid fuel conversion phases, i.e. drying, pyrolysis and char oxidation, and the models were validated with experimental measurements from operating equipment. These methodologies are shown to be a fundamental tool in increasing thermal efficiency and reducing the environmental impact of such technologies.
Keywords
CFD, Combustion, Biomass, Grate, boilers
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