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Improvement of Municipal Solid Waste Syngas Premixed Flame with Cellular Structure on a Flat Burner

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  • Amornrat Kaewpradap

    (Combustion and Energy Research Laboratory (CERL), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand)

  • Paweenuch Sarmarnjit

    (Combustion and Energy Research Laboratory (CERL), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand)

  • Pisit Korkeatkangwan

    (Combustion and Energy Research Laboratory (CERL), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand)

  • Kritchaniphat Sawatnuchart

    (Combustion and Energy Research Laboratory (CERL), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand)

  • Sumrerng Jugjai

    (Combustion and Energy Research Laboratory (CERL), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok 10140, Thailand)

Abstract

This research was conducted to study the flame instability of syngas derived from raw municipal solid waste (MSW) and its potential as a natural gas (NG) replacement in power generation. MSW syngas is a mixture of various components such as methane (CH 4 ), nitrogen (N 2 ), oxygen (O 2 ), and hydrogen (H 2 ), whereas NG is mainly composed of CH 4 (>70%) and CO 2 (>10%). The flame characteristics of these two gases are quite different thus a direct replacement of NG with MSW syngas is impossible. Improvements to MSW syngas combustion are needed through the augmentation of the gas with CH 4 and H 2 active additives at various ratios so that its flame characteristics are comparable to those of NG. A typical MSW syngas composed of 16.2% methane (CH 4 ), 13.5% hydrogen (H 2 ), 69.1% nitrogen (N 2 ), and 0.6% oxygen (O 2 ) (by vol.) is available in Thailand with great potential for use as an NG replacement. In this study, this gas is used as a representative fuel for improvement and is referred to as simulated Syngas 1. Its premixed flame was studied using a McKenna flat burner to understand its flame instability. Various percentages of CH 4 and H 2 were added to Syngas 1. Its flame characteristics were measured and compared to those of NG. These characteristics included the cellular flame, cell size, flat flame, flammability limit, and flame temperature. The results showed that the flame instability of Syngas 1 was significantly suppressed by adding minimal amounts of CH 4 and H 2 . The new composition of Syngas 1 consisted of 19.3% methane (CH 4 ), 19.0% hydrogen (H 2 ), 61.2% nitrogen (N 2 ), and 0.5% oxygen (O 2 ) (by vol.). It yielded flame characteristics that were comparable to those of an NG flame. This study shows that MSW syngas can potentially replace NG in power generation.

Suggested Citation

  • Amornrat Kaewpradap & Paweenuch Sarmarnjit & Pisit Korkeatkangwan & Kritchaniphat Sawatnuchart & Sumrerng Jugjai, 2023. "Improvement of Municipal Solid Waste Syngas Premixed Flame with Cellular Structure on a Flat Burner," Energies, MDPI, vol. 16(5), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:5:p:2361-:d:1084710
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    References listed on IDEAS

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    1. Kaewpradap, Amornrat & Jugjai, Sumrerng, 2019. "Experimental study of flame stability enhancement on lean premixed combustion of a synthetic natural gas in Thailand," Energy, Elsevier, vol. 188(C).
    2. Hu, Yisheng & Pang, Kang & Cai, Longhao & Liu, Zhibin, 2021. "A multi-stage co-gasification system of biomass and municipal solid waste (MSW) for high quality syngas production," Energy, Elsevier, vol. 221(C).
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