The co-combustion of torrefied municipal solid waste and coal in bubbling fluidised bed combustor under atmospheric and elevated pressure

RENEWABLE ENERGY

卷:179

Article

Lasek, Janusz A.¹  Glod, Krzysztof¹  Sowik, Krzysztof¹ 

[1] Inst Chem Proc Coal, Ul Zamkowa 1, PL-41803 Zabrze, Poland

关键词: Municipal solid waste;    Coal;    Pressurised combustion;    Torrefaction;    NOx;    SO2;   

DOI  :  10.1016/j.renene.2021.07.106

来源: Elsevier

【 摘 要 】

Municipal solid waste (MSW) is considered a valuable energy source that can be applied as a secondary (co-combustion) or even primary fuel in a power plant. Torrefaction of MSW led to significant benefits related to reduced chlorine and mercury content. The aim of this paper is to investigate the cocombustion of torrefied municipal solid waste and coal in a bubbling fluidised bed combustor under atmospheric and elevated pressure. Torrefaction of pelletised MSW was carried out using a rotary kiln reactor under inert atmosphere (N2) and synthetic flue gas (mixture of CO2 - -11 v.%, O2 - -4,35 v.%, and N2- as balance). The pelletisation was carried out using a pelletiser with the rotating rollers in contact with the matrix. The pressurised co-combustion of hard coal and MSW (5% and 15% by weight) was carried out under a total pressure of 3 bar and a temperature bed of 850 degrees C. The main component of the experimental setup was a fluidised bed combustor (bubbling regime). The increase in pressure in the combustion chamber caused significant benefits in terms of the emission of gaseous pollutants. Lower emissions of NO (by -56%) and SO2 (by -35%) were observed for pressurised combustion. (c) 2021 Institute for Chemical Processing of Coal. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

【 授权许可】

Free