MATEC Web Conf.
Volume 240, 2018XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018)
|Number of page(s)||8|
|Section||Mathematical Modeling in the Energy and Industrial Processes|
|Published online||27 November 2018|
Cyclone furnace as a way for mercury removal from lignite
Czestochowa University of Technology, Department of Energy Engineering, Brzeźnicka 60A, 42-201 Częstochowa, Poland
* Corresponding author: email@example.com
The power plants will have to meet the requirements regarding permissible Hg emission levels by 2021. A particularly unfavourable situation is observed for front of lignite, which contains more mercury than hard coal, and in addition its combustion also causes more CO2 emissions. The paper presents the proposal to use the cyclone furnace in the process of heat treatment for the process of the release of mercury from lignites. The structure and methods of operation of the cyclone furnace were presented. The paper also discusses the methodology of the process of numerical modelling of combustion and gasification of coal dust. The results showed that changing a fuel stream fed to the cyclone furnace allows for controlling the temperature and degree of fuel devolatilization. This leads to heating of the fuel to the desired temperature due to the expected level of mercury removal from the fuel. This is very important especially in the case of fuels containing significant amounts of moisture, such as lignite. The experiments performed in the study confirmed the results of numerical calculations for heating fuel and showed the possibility of over 90% removal of mercury from the fuel. The results confirmed the laboratory workplace rotary kiln.
© The Authors, published by EDP Sciences, 2018
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