Air Fuel Ratio (AFR) and Temperature’s Effects on Syngas Composition and Calorific Value Using a Coconut Shell Downdraft Gasifier

DOI

10.2991/978-94-6463-475-4_12How to use a DOI?

Keywords

Gasification; Syngas; Downdraft Gasifier; Coconut Shell; Caloric value

Abstract

Biomass is an environmentally friendly alternative energy due to its sulphur-free, carbon-neutral, and the abundant availability. Coconut Shell is a type of The calorific value of biomass waste, which is suitable for use as a raw material in the gasification process, is 20890 kcal/kg. Gasification is a process that uses restricted air, 20% to 40% of air stoichiometry, to burn solid fuels and produce syngas (CO, CH4, and H2). Gasifiers are categorized as updraft, downdraft, or cross-flow based on the direction of airflow..The type downdraft gasifier produce lower tar content than type updraft gasifier. This research was carried out gasification of biomass with Using a downdraft gasifier with coal as a stabilizer, the aim of this research is to ascertain the impact of temperature and AFR on the calorific value and composition of syngas.The variations of air fuel ratio were 0.79, 068, and 1.22. The temperature variations used were the temperature range in the reduction process, that was 600ºC-1000ºC. As a result, the calorific value drops as a result of the decrease in the percentage of CO, H2, and CH4 brought on by the increase in AFR. Only the percentages of H2 and CO 2 grow in the temperature range of 800ºC-1000ºC, whereas the percentages of CO, H2, and CH4 increase in the 600ºC-800ºC range. Syngas’s calorific value rises as temperature rises. By using coal in the gasification pro Syngas’s calorific value rises as temperature rises. By using coal in the gasification process, stable combustion temperatures within the gasifier may be maintained. Additionally, more syngas can be produced, which increases the amount of CO, CH4, and H2, increasing the calorific value. The research’s optimal working parameters were achieved with coal acting as a stabilizer, at an AFR of 0.79 and a temperature of 800ºC. 40.18% of CO, 19.36% of H2, 12.38% of CH4, and 11.4003 MJ/m3 of low heating value (LHV) were found to be the percentage of syngas.

Copyright

© 2024 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  - T. Tiara
AU  - Miftahul Djana
AU  - Dina Endang Ristanti
AU  - Ananda Amelia Yusuf
PY  - 2024
DA  - 2024/08/02
TI  - Air Fuel Ratio (AFR) and Temperature’s Effects on Syngas Composition and Calorific Value Using a Coconut Shell Downdraft Gasifier
BT  - Proceedings of the 1st International Conference on Industry Science Technology and Sustainability (IConISTS 2023)
PB  - Atlantis Press
SP  - 121
EP  - 136
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-475-4_12
DO  - 10.2991/978-94-6463-475-4_12
ID  - Tiara2024
ER  -