WEKO3
アイテム
自己燃焼化におけるアブラヤシの空果房炭化に関する研究と山仙式炭化法によるバイオチャーの製造
https://doi.org/10.18997/00004247
https://doi.org/10.18997/0000424781dabedb-6a96-4a2a-9231-59161a11cd08
| 名前 / ファイル | ライセンス | アクション |
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sei_k_236.pdf (3.9 MB)
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| アイテムタイプ | 学位論文 = Thesis or Dissertation(1) | |||||||
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| 公開日 | 2015-08-18 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Study on Biochar Production from Empty Fruit Bunch Biomass Under Self-Sustained Carbonization for the Development of Yamasen Carbonization Oven | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 自己燃焼化におけるアブラヤシの空果房炭化に関する研究と山仙式炭化法によるバイオチャーの製造 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Juferi, Bin Idris
× Juferi, Bin Idris
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The usage of OPEFB biomass as an alternative source for renewable energy such as biochar has a great potential to overcome the shortage of fossil fuel. Moreover, the utilization of biomass as a source of biofuel can reduce the problem of environmental pollution particularly on the issues related to greenhouse gases. Being the second largest oil palm producer in the world, Malaysia has a great potential to produce clean renewable energy from biomass. The selfsustained carbonization was proposed and tested in this study, whereby oil palm biomass itself was combusted to provide heat for self-carbonization in inadequate oxygen without electrical heating element. In the first chapter, the reviews on the literature pertaining Malaysia palm oil industry, current carbonization technologies, proposed self-sustained carbonization to produce biochar and the objectives of this study have been discussed. In the second chapter, the temperature profiles and gaseous emission concentration during self-sustained carbonization of empty fruit bunch biomass in a pilot scale reactor (30 kg capacity) at different particles sizes (100-150, 30-99 and less than 29 mm) was evaluated. For self-sustained carbonization with natural exhausted gas flow rate, the maximum temperatures ranging 417-580 °C at all particle sizes were tested and found to be suitable for biochar production. The average concentration of CO2, CO and CH4 released during the carbonization process were between 2.8-4.1, 0.38-0.51 and 0.17-0.26 %, respectively. For self-sustained carbonization with fixed exhausted gas flow rate, the maximum temperatures were slightly similar when compared to self-sustained carbonization with natural exhausted gas flow rate which was between 493-564 °C at all particle size tested. The average concentration of CO2, CO and CH4 released during the carbonization process were between 3.65-5.59, 0.56-0.72 and 0.29-0.39 %, respectively. SO2 and HCl were not detected while NOx and particulate matter, (PM10) were well below permitted level set by the Department of Environment, Malaysia for both natural and fixed exhausted gas flow rate. Gaseous pollutant in this study can be considered low and the self-sustained carbonization process was environmental friendly when compared to other studies using same palm oil biomass carbonization. In the third chapter, the effect of exhausted gas flow rate and OPEFB biomass particle sizes on biochar yield and quality in a pilot scale (30 kg capacity) reactor under self-sustained carbonization were evaluated. For self-sustained carbonization with natural exhausted gas flow rate, harvesting carbonization temperature of < 500 °C of OPEFB biomass at the particle size ranging from 100-150 mm produced the highest biochar yield and CV between 23-25 % and 22.6-24.7 MJ/kg, respectively. The carbonization retention time was between 790-893 min and less compared to other particle sizes tested. This particle size, without further size reduction, is needed to reduce the energy requirement at production line. For self-sustained carbonization temperature with fixed exhausted gas flow rate, the OPEFB biochar yield at particle size 100-150 mm produced the highest yield (25-27 %), harvested at carbonization temperature of < 500 °C compared to other particle sizes in the same condition. Moreover, this yield was also high as compared to self-sustained carbonization with natural exhausted gas flow rate. The CV were found between 23.0-24.4 MJ/kg which were also comparable with other studies. The carbonization retention time between 280-462 min were found less when compared to natural exhausted gas flow rate which contributed to high yield. More consistent result can be achieved under self-sustained carbonization temperature with fixed exhausted gas flow rate but energy required from the usage of exhaust gas blower. In this study, as the carbonization harvesting temperature decreased, the biochar yield decreases, the carbonization retention time increased. In the fourth chapter, self-sustained carbonization of pressed-shredded and whole bunch OPEFB in large scale pool type reactor (3000 kg) from the development of YAMASEN oven (Shimane) were successfully adopted and tested. The pressed-shredded OPEFB was found suitable to be carried out under an open carbonization system while closed carbonization system was preferable for whole bunch OPEFB. The maximum self-sustained carbonization temperature were ranged 583-695 °C for pressed-shredded and bunch OPEFB biomass. In terms of CV, large scale biochar production for open and closed system under self-sustained carbonization produced in between 21.9-24.3 and 19.6-22.9 MJ/kg, respectively which is comparable to small scale biochar production. In the fifth chapter, the energy balance and potential energy saving of raw and biochar OPEFB (pressed-shredded and whole bunch) in a scaled-up pool type self-sustained carbonization reactor (3 tones capacity) was evaluated. The ratio energy output/input for pressed-shredded biochar, whole bunch biochar and raw pressed-shredded OPEFB briquette were positive which were 12, 15 and 8 respectively. Whole bunch biochar is still the highest ratio energy output/input biochar production although without pressed-shredder machine process step resulting in more energy produced than energy consumed. Briquetting raw pressed-shredded without carbonization process step also showed viable energy produced, however drying step with moisture below than 10 % is required. In conclusion and remarks, the self-sustained carbonization was successfully materialized, producing high yield and comparable CV in a small scale followed by scaling-up production of OPEFB biochar. This proposed system is preferable to the industry due to its simplicity, ease of operation and low energy requirement. | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1. Introduction and literature review||2. Temperature profiles and gaseous emission during selfsustained carbonization of opefb biomass in a pilot scale reactor (30 kg capacity).||3. The effect of exhausted gas flow rate and opefb biomass particle size on biochar yield and quality under self-sustained carbonization in a pilot scale (30 kg capacity) reactor||4. The effect of opefb biochar yield and quality in a scaled-up pool type reactor under self-sustained carbonization (3 tones capacity).||5. The effect of energy balance and potential energy saving of raw opefb and biochar in a scaled-up pool type self-sustained carbonization reactor (3 tones capacity)||6. Conclusion and remarks | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号:生工博甲第236号 学位授与年月日:平成27年3月25日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Biochar | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Self-sustained carbonization | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Heating value | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Oil palm empty fruit bunch | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Waste management and utilization | |||||||
| アドバイザー | ||||||||
| 白井, 義人 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第236号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2015-03-25 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 平成26年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00004247 | |||||||
| ID登録タイプ | JaLC | |||||||
