Experimental investigation on multi-stage downdraft gasification: Influence of air ratio and equivalent ratio to the gasifier performance

Arif Rahman Saleh*, Bambang Sudarmanta

*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Multi-stage gasification process adding multiple air injection (at pyrolysis and oxidation) to reduce tar content and improve the efficiency. all components of the fuel can decompose perfectly into pyrolysis products and the total pyrolysis product also increases. The mean temperatures in the pyrolysis zone are respectively between 569°C and 633°C for the 0% and 90% Air Ratios. Temperature increases in the pyrolysis zone change the nature of the endothermal into exothermal and providing the heat energy for the drying, oxidation and reduction zones. While the temperature of the partial oxidation zone reaches 858°C. For a total air flow of 10.5 Nm3/h with a 90% air ratio, the gasifier can produce a low tar content of 32.27 mg/Nm3 when compared to 0% air ratio of 106.5 mg/Nm3. This result shown that multi-stage gasifier can reduce tar content by 30%.

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
DOIs
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
Volume1983
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Conference on Mechanical Engineering, ICOME 2017
Country/TerritoryIndonesia
CitySurabaya
Period5/10/176/10/17

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