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CPOTE2020 logo
CPOTE2020
6th International Conference on
Contemporary Problems of Thermal Engineering
Online | 21-24 September 2020

Abstract CPOTE2020-1144-A

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

Janusz LASEK, Institute for Chemical Processing of Coal, Poland
Krzysztof GŁÓD, Institute for Chemical Processing of Coal, Poland
Krzysztof SŁOWIK, Institute for Chemical Processing of Coal, Poland

Municipal solid wastes (MSW) are considered as a valuable energy source that can be applied as a secondary (co-combustion) or even primary fuel in a power plant. Torrefaction of MSW caused atmosphere (N2) and synthetic flue gas (mixture of CO2 –~11 v.%, O2 – ~4,35 v.%, and N2– as balance). The pelletization were carried out using a pelletizer with the rotating rollers that are in contact with the matrix. The pressurized co-combustion of hard coal and MSW (5% and 15% by weight) was carried out under total pressure of 3 bar and temperature bed of 850°C. The main component of the experimental setup was a fluidized bed combustor (bubbling regime). The reactor consisted of a stainless steel tube with a reactor diameter of 105 mm and height of 1500 mm. The increase of pressure in combustion chamber caused significant benefits in terms of gaseous pollutants emission. A lower emission of NO (by ~56%) and SO2 (by ~35%) was observed for pressurized combustion.significant benefits related to material stabilization, and reduced chlorine and mercury content. The aim of this paper is to investigate co-combustion of torrefied municipal solid waste and coal in bubbling fluidized bed combustor under atmospheric and elevated pressure. Torrefaction of pelletized (diameter of 6 mm) of MSW were carried out using a rotary kiln reactor under inert

Keywords: Municipal solid waste (MSW), Coal, Pressurized bubbling fluidized bed combustion, Torrefaction, NOx and SO2
Acknowledgment: This research was investigated under the Polish-Taiwanese/Taiwanese-Polish Joint Research Project entitled “Towards the enhancement of an application of municipal solid waste (MSW) in energy sector.” and “Utrzymanie potencjału badawczego Centrum Badań Technologicznych” (IChPW no. 11.20.011), financed by the Ministry of Science and Higher Education, Republic of Poland. The authors gratefully acknowledge the Ministry of Science and Technology (Taiwan), agreement No. MOST 106-2923-E-006-003-MY3; the National Centre for Research and Development (Poland), agreement No. PL-TW IV/4/2017 and the Ministry of Science and Higher Education, Republic of Poland.