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Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood

In Taiwan, combustible wood mostly comes from waste pallets and scrap packaging materials discarded by factories, which produced a total of 278,067 tons of waste wood in 2019. In this study, the heat value of waste wood was 18.3 ± 1.07 MJ kg–1. The measured volatile fraction was 76.5 ± 7.34%, the fi...

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Main Authors: Tsai, Jiun Horng, Lin, Kuo Hsiung, How, Vivien, Deng, Yu An, Chiang, Hung Lung
Format: Article
Language:English
Published: Taiwan Association for Aerosol Research 2021
Online Access:http://psasir.upm.edu.my/id/eprint/93567/1/Waste%20to%20energy.pdf
http://psasir.upm.edu.my/id/eprint/93567/
https://aaqr.org/articles/aaqr-21-11-oa-0301
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spelling my.upm.eprints.935672022-11-22T08:50:31Z http://psasir.upm.edu.my/id/eprint/93567/ Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood Tsai, Jiun Horng Lin, Kuo Hsiung How, Vivien Deng, Yu An Chiang, Hung Lung In Taiwan, combustible wood mostly comes from waste pallets and scrap packaging materials discarded by factories, which produced a total of 278,067 tons of waste wood in 2019. In this study, the heat value of waste wood was 18.3 ± 1.07 MJ kg–1. The measured volatile fraction was 76.5 ± 7.34%, the fixed carbon was 15.7 ± 3.19%, the ash content was 2.96 ± 2.45%, and the moisture content was 21.6 ± 10.2%. The proportions of the elemental constituents in the waste wood were 45.3 ± 4.95%, 46.9 ± 3.94%, 5.9 ± 0.44%, 0.21 ± 0.17%, 0.29 ± 0.26%, and 0.02 ± 0.02% for carbon, oxygen, hydrogen, sulfur, nitrogen, and chlorine, respectively. The average boiler capacity was 11.5 ± 6.84 ton hr–1, the average fuel consumption of the boilers was 1.47 ± 1.81 ton hr–1, the average operating temperature of the boilers was 853 ± 228°C, the average steam generation of the boilers was 7.63 ± 5.97 ton hr–1, and the average exhaust flow rate was 246.6 ± 200.9 m3 min–1. The main air pollution control systems used in the waste wood combustion boilers were systems combining a cyclone, a baghouse and a scrubber (37.8%), a cyclone and a baghouse (28.4%), a cyclone and a scrubber (10.2%), and systems using a baghouse only (9.8%). Based on our fuel consumption data, the air pollutant emission factors were 0.71 ± 1.44 kg per ton of wood for PM, 0.86 ± 1.47 kg per ton of wood for SOx, and 5.24 ± 9.56 kg per ton of wood for NOx. In July 2022, new emission standards for boilers will be implemented, and emission reductions of at least 30% for PM, 35% for NOx and 7% for SO2 will be required. Taiwan Association for Aerosol Research 2021-12 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/93567/1/Waste%20to%20energy.pdf Tsai, Jiun Horng and Lin, Kuo Hsiung and How, Vivien and Deng, Yu An and Chiang, Hung Lung (2021) Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood. Aerosol and Air Quality Research, 21 (12). pp. 1-16. ISSN 1680-8584; ESSN: 2071-1409 https://aaqr.org/articles/aaqr-21-11-oa-0301 10.4209/aaqr.210301
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description In Taiwan, combustible wood mostly comes from waste pallets and scrap packaging materials discarded by factories, which produced a total of 278,067 tons of waste wood in 2019. In this study, the heat value of waste wood was 18.3 ± 1.07 MJ kg–1. The measured volatile fraction was 76.5 ± 7.34%, the fixed carbon was 15.7 ± 3.19%, the ash content was 2.96 ± 2.45%, and the moisture content was 21.6 ± 10.2%. The proportions of the elemental constituents in the waste wood were 45.3 ± 4.95%, 46.9 ± 3.94%, 5.9 ± 0.44%, 0.21 ± 0.17%, 0.29 ± 0.26%, and 0.02 ± 0.02% for carbon, oxygen, hydrogen, sulfur, nitrogen, and chlorine, respectively. The average boiler capacity was 11.5 ± 6.84 ton hr–1, the average fuel consumption of the boilers was 1.47 ± 1.81 ton hr–1, the average operating temperature of the boilers was 853 ± 228°C, the average steam generation of the boilers was 7.63 ± 5.97 ton hr–1, and the average exhaust flow rate was 246.6 ± 200.9 m3 min–1. The main air pollution control systems used in the waste wood combustion boilers were systems combining a cyclone, a baghouse and a scrubber (37.8%), a cyclone and a baghouse (28.4%), a cyclone and a scrubber (10.2%), and systems using a baghouse only (9.8%). Based on our fuel consumption data, the air pollutant emission factors were 0.71 ± 1.44 kg per ton of wood for PM, 0.86 ± 1.47 kg per ton of wood for SOx, and 5.24 ± 9.56 kg per ton of wood for NOx. In July 2022, new emission standards for boilers will be implemented, and emission reductions of at least 30% for PM, 35% for NOx and 7% for SO2 will be required.
format Article
author Tsai, Jiun Horng
Lin, Kuo Hsiung
How, Vivien
Deng, Yu An
Chiang, Hung Lung
spellingShingle Tsai, Jiun Horng
Lin, Kuo Hsiung
How, Vivien
Deng, Yu An
Chiang, Hung Lung
Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
author_facet Tsai, Jiun Horng
Lin, Kuo Hsiung
How, Vivien
Deng, Yu An
Chiang, Hung Lung
author_sort Tsai, Jiun Horng
title Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
title_short Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
title_full Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
title_fullStr Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
title_full_unstemmed Waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
title_sort waste to energy: air pollutant emissions from the steam boilers using recycled waste wood
publisher Taiwan Association for Aerosol Research
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/93567/1/Waste%20to%20energy.pdf
http://psasir.upm.edu.my/id/eprint/93567/
https://aaqr.org/articles/aaqr-21-11-oa-0301
_version_ 1751538230052782080
score 13.211869

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