Assessment of the Co-firing in a Portable Boiler Using Rice Husk Biopellets and Sub-bituminous Coal

DOI

10.2991/978-94-6463-386-3_29How to use a DOI?

Keywords

biopellet; boiler; co-firing; rice husk

Abstract

Rice husks can be used to produce biopellets that can be co-fired in steam power plants. Performance testing investigations on portable boilers, using combinations of sub-bituminous coal and rice husk biopellets with varying ratios of 100%:0%, 95%:5%, and 85%:15%, reveal that the highest values are achieved with sub-bituminous coal alone, without any mixing. Rice husk bio-pellets provide a load of 17 watts with voltage parameters of 265V, a current of 1.17A, a temperature of 456°C and turbine rotation of 718 rpm. A voltage of 257V and a current of 0.83A is produced by sub-bituminous coal with a rice husk bio-pellet mixing ratio of 95%:5% and a load of 17 watts. The temperature produced at this ratio is 452°C, and the turbine rotates at 664 rpm. This is due to voltage losses in the conductor and the difference in calories caused by the mixing ratio. According to the results of combustion gas emissions, increasing the co-firing ratio with rice husk biopellets reduces CO₂ emissions. This is because the sulfur concentration of rice husk biopellets is lower than that of coal. However, the ash concentration, which is much higher than that of coal, affects the particle flow rate in the Electrostatic Precipitator (ESP) inlet area. Thus, while increasing the co-firing ratio, it is crucial to concentrate on improving ESP operation to ensure ESP conditions remain safe. The test results for NO combustion gas emissions were the highest (8 ppm) at a ratio of 95%:5%, caused by an unstable combustion temperature.

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  - Rusdianasari Rusdianasari
AU  - Leila Kalsum
AU  - Abu Hasan
AU  - Hengky Saputra
AU  - Riztamala Diana
AU  - Akhmad Rizal
PY  - 2024
DA  - 2024/02/27
TI  - Assessment of the Co-firing in a Portable Boiler Using Rice Husk Biopellets and Sub-bituminous Coal
BT  - Proceedings of the 7th FIRST 2023 International Conference on Global Innovations (FIRST-ESCSI 2023)
PB  - Atlantis Press
SP  - 266
EP  - 275
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-386-3_29
DO  - 10.2991/978-94-6463-386-3_29
ID  - Rusdianasari2024
ER  -