The effect of two stage gasifying agent on biomass downdraft gasification to the gasifier performance

Bambang Sudarmanta*, Abdul Gafur, Arif Rahman Saleh, Bambang Arip Dwiyantoro, Sampurno

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)


Biomass from palm oil plant waste in the form of palm fronds that are abundant but underutilized. Considering the large and consistent supply, oil palm fronds (OPF) could be a promising source of biomass energy through gasification. This Paper presents an experimental evaluation the quality of the producer gas in a two-stage gasifier, for different operating conditions. Varying the equivalent ratio (ER) to the gasifier and the distribution of gasification air between each gasification stages (ARpir-oks). The gas composition and its lower heating value (LHV) were also determined. Experimental tests were performed varying the operating conditions of the gasifier: the air flow between 17,3 kg/h, 23,1 kg/h, and 28,9 kg/h (the proximate equivalence ratio from 0,3, 0,4 and 0.5) and the air flow ratio in the two stages (ARpir-oks) between 0%, 70%, 80%, and 90%, evaluating the effects of these parameters over the quality of the gas. The results show that a highest CO content (22.1% v) was achieved for airflow 23.1 kg / s (ER 0.4) at AR 90% along with decreasing CH4 (0.97% v) while H2 (16, 27% v) highest achieved at AR 80%. LHV gas shows maximum value at 4542.5 Kj/kg achieved at Air Ratio (AR) 90% with air flow 23.1 kg / s (ER 0.4). Gasification of two-stageair supply increase gas composition and allowed to reduce the tar content in the producer gas. This result can be explained by increasing temperature in pyrolysis and combustion zone. Good stability and performance of pyrolysis and combustion zones, H2O and CO2 formed in this zone and their interaction with charcoal is excellent in endothermicwater-gas reaction and boudouard reaction.

Original languageEnglish
Title of host publicationDisruptive Innovation in Mechanical Engineering for Industry Competitiveness
Subtitle of host publicationProceedings of the 3rd International Conference on Mechanical Engineering, ICOME 2017
EditorsVivien S. Djanali, Suwarno, Bambang Pramujati, Volodymyr A. Yartys
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416994
Publication statusPublished - 13 Jul 2018
Event3rd International Conference on Mechanical Engineering, ICOME 2017 - Surabaya, Indonesia
Duration: 5 Oct 20176 Oct 2017

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference3rd International Conference on Mechanical Engineering, ICOME 2017


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