Gasification of Municipal Solid Waste in Dual Reactor Fluidized Bed with Steam and CO₂ as Gasification Agent

DOI

10.2991/978-94-6463-772-4_38How to use a DOI?

Keywords

Gasification; Municipal solid waste; Dual reactor fluidized bed

Abstract

Municipal solid waste (MSW), a prevalent environmental concern, presents a significant energy harnessing opportunity. This study explores the gasification of MSW into a usable gaseous fuel utilizing a Dual Reactor Fluidized Bed, a thermal technology that transitions solid substrates into gases. The primary objective of this gasification process is to generate a superior quality gas by employing specific gasifying agents, with a comparative analysis of steam and CO 2 against conventional air. This research particularly examines the influence of these agents on the H2/CO ratio under varying operational temperatures, ranging from 400 ℃ to 700 ℃. Employing silica sand as a medium for heat conduction between interconnected reactors, the investigation demonstrates that syngas composition is profoundly affected by fluctuations in gasification temperatures. A rise in temperature correlates with an enriched syngas composition, evidenced by heightened CO and H2 levels when the temperature is elevated from 400 ℃ to 700 ℃. Notably, the transition from air to steam as the gasification agent resulted in a substantial increase in H2 concentration, reaching 28.6%. Conversely, utilizing CO2 as the gasifying agent led to a surge in CO composition, with a peak value of 24.8%. The study further reveals a H2/CO ratio augmentation from 0.6 with air to 1.3 with steam (H2O), and 0.7 with CO2, indicating the critical role of the gasifying agent. In conclusion, the findings underscore an overall enhancement in the heating value of the produced gas, attributable to both the escalation in gasification temperature and the transition among different agents (air, steam, and CO2). This research illuminates the potential for optimizing syngas production from MSW, thereby turning a substantial environmental challenge into a promising energy solution.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - I Wayan Temaja
AU  - I Nyoman Suprapta Winaya
AU  - I Ketut Gede Wirawan
AU  - Made Sucipta
PY  - 2025
DA  - 2025/07/01
TI  - Gasification of Municipal Solid Waste in Dual Reactor Fluidized Bed with Steam and CO₂ as Gasification Agent
BT  - Proceedings of the 10th International Conference on Science and Technology (ICST 2024)
PB  - Atlantis Press
SP  - 430
EP  - 437
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-772-4_38
DO  - 10.2991/978-94-6463-772-4_38
ID  - Temaja2025
ER  -