Thermodynamic Investigation of Selected Metal Sulfates for Controlling Fouling and Slagging During Combustion

A4 Conference proceedings


Internal Authors/Editors


Publication Details

List of Authors: Fiseha Tesfaye, Mykola Moroz, Daniel Lindberg, Leena Hupa, In-Ho Jung
Editors: Sang-Done Kim, Jong-Min Lee
Place: Seoul, South Korea
Publication year: 2018
Publisher: The Korean Institute of Chemical Engineers (KIChE)
Book title: 23rd International Conference on Fluidized Bed Conversion - Innovative Fluidized Bed Conversion Technology for a Sustainable Development
Start page: 1070
End page: 1077
ISBN: 978-89-950005-7-1


Abstract

Today, aside from the solar, wind and hydropower, solid biomass, municipal solid wastes and industrial wastes are increasingly becoming important sources of renewable energy. However, fouling, slagging and corrosion that are associated with the combustion processes of these renewable resources threaten long-term operation availability and costs of power plants. Alkali metal elements in the biomass fuel and the ash fusion behavior are the two major origins contributing to slagging during high-temperature biomass combustion. Slags accumulated on superheaters, which decrease thermal efficiency, often constitute complex combination of K-Ca-Mg-sulfates. However, thermodynamic properties of these sulfates and their combined effect with other phases, which will help to solve the fouling, slagging and high-temperature corrosion related problems in biomass combustion processes, are not well known. In this work, thermal stabilities including solubility limits of selected phases and phase mixtures in the MgSO4-K2SO4-CaSO4 system are both critically reviewed and experimentally studied. The obtained results are presented and discussed.


Keywords

Renewable energy, slagging and fouling, Sulfates, Thermal stability

Last updated on 2019-17-07 at 05:24