TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION
The most extensive use of coal in Indonesia is for electricity generation. Due to increasing concerns about climate change and the need to reduce emissions caused by burning coal, biomass-based fuels are becoming more competitive. The biomass carbonization process, or torrefaction, to produce solid...
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University of Zagreb
2024-01-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
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| Online Access: | https://hrcak.srce.hr/file/464651 |
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| author | Datin Fatia Umar Zulfahmi Zulfahmi Liston Setiawan Gunawan Gunawan Agus Prakosa Truman Wijaya Edwin Akhdiat Daranin |
| author_facet | Datin Fatia Umar Zulfahmi Zulfahmi Liston Setiawan Gunawan Gunawan Agus Prakosa Truman Wijaya Edwin Akhdiat Daranin |
| author_sort | Datin Fatia Umar |
| collection | DOAJ |
| description | The most extensive use of coal in Indonesia is for electricity generation. Due to increasing concerns about climate change and the need to reduce emissions caused by burning coal, biomass-based fuels are becoming more competitive. The biomass carbonization process, or torrefaction, to produce solid fuel has been introduced elsewhere. This research uses sub-bituminous coal and rice husks, considering Indonesia’s large potential for both. The primary objective of this research was to determine the optimal temperature and residence time for the rice husk torrefaction process, intending to reduce the alkali oxide content that led to ash deposition. This was necessary due to the limited information available, particularly for local rice husks from Indonesia. We carried out the rice husk torrefaction at 300, 350, and 400°C temperatures for 30, 60, and 90 minutes. The results show that a temperature of 350°C and a residence time of 60 minutes were the optimal conditions. In these conditions, the potassium and sodium oxides decreased, and the calorific value increased. To get a coal-rice husk blending with a calorific value greater than 5,000 cal/g (ADB), the proportion of coal to rice husk should be 90 and 10%, respectively. The rice husk torrefaction process did not have much influence on the occurrence of ash deposition. However, the torrefaction process increased the calorific value, reduced transportation costs due to the lower moisture content, and improved grindability so that it was easy to blend with coal. |
| format | Article |
| id | doaj-art-943f3dbaafe74977a23a3db06f91406f |
| institution | OA Journals |
| issn | 0353-4529 1849-0409 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | University of Zagreb |
| record_format | Article |
| series | Rudarsko-geološko-naftni Zbornik |
| spelling | doaj-art-943f3dbaafe74977a23a3db06f91406f2025-08-20T01:48:02ZengUniversity of ZagrebRudarsko-geološko-naftni Zbornik0353-45291849-04092024-01-0139412513610.17794/rgn.2024.4.10TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITIONDatin Fatia Umar0Zulfahmi Zulfahmi1Liston Setiawan2Gunawan Gunawan3Agus Prakosa4Truman Wijaya5Edwin Akhdiat Daranin6Research Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaResearch Centre of Mining Technology, National Research and Innovation Agency, The Republic of Indonesia, Jalan Sutami KM 15, Tanjung Bintang 35361, Lampung, IndonesiaThe most extensive use of coal in Indonesia is for electricity generation. Due to increasing concerns about climate change and the need to reduce emissions caused by burning coal, biomass-based fuels are becoming more competitive. The biomass carbonization process, or torrefaction, to produce solid fuel has been introduced elsewhere. This research uses sub-bituminous coal and rice husks, considering Indonesia’s large potential for both. The primary objective of this research was to determine the optimal temperature and residence time for the rice husk torrefaction process, intending to reduce the alkali oxide content that led to ash deposition. This was necessary due to the limited information available, particularly for local rice husks from Indonesia. We carried out the rice husk torrefaction at 300, 350, and 400°C temperatures for 30, 60, and 90 minutes. The results show that a temperature of 350°C and a residence time of 60 minutes were the optimal conditions. In these conditions, the potassium and sodium oxides decreased, and the calorific value increased. To get a coal-rice husk blending with a calorific value greater than 5,000 cal/g (ADB), the proportion of coal to rice husk should be 90 and 10%, respectively. The rice husk torrefaction process did not have much influence on the occurrence of ash deposition. However, the torrefaction process increased the calorific value, reduced transportation costs due to the lower moisture content, and improved grindability so that it was easy to blend with coal.https://hrcak.srce.hr/file/464651torrefactiontemperatureresidence timealkaliash deposition |
| spellingShingle | Datin Fatia Umar Zulfahmi Zulfahmi Liston Setiawan Gunawan Gunawan Agus Prakosa Truman Wijaya Edwin Akhdiat Daranin TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION Rudarsko-geološko-naftni Zbornik torrefaction temperature residence time alkali ash deposition |
| title | TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION |
| title_full | TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION |
| title_fullStr | TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION |
| title_full_unstemmed | TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION |
| title_short | TORREFACTION OF RICE HUSK AS PREPARATION OF COAL-BIOMASS CO-FIRING AND ITS PROPENSITY ON ASH DEPOSITION |
| title_sort | torrefaction of rice husk as preparation of coal biomass co firing and its propensity on ash deposition |
| topic | torrefaction temperature residence time alkali ash deposition |
| url | https://hrcak.srce.hr/file/464651 |
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