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Development of efficient separation method of extract and solvent in degradative solvent extraction of low-rank coals or biomass wastes |
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| รหัสดีโอไอ | |
| Title | Development of efficient separation method of extract and solvent in degradative solvent extraction of low-rank coals or biomass wastes |
| Creator | 1. Ryuichi Ashida 2. Ryo Takahashi 3. Janewit Wannapeera 4. Nakorn Worasuwannarak 5. Motoaki Kawase 6. Kouichi Miura |
| Publisher | Joint Graduate School of Energy and Environment |
| Publication Year | 2557 |
| Keyword | Degradative solvent extraction, dewatering, upgrading, low-rank coals, biomass wastes, separation of extract and solvent |
| Abstract | The authors have recently proposed a novel method that not only dewaters but upgrades low-grade carbonaceous resources such as biomass, peat, lignite, and sub-bituminous coals. The method comprises a treatment of the raw materials in non-polar solvent, such as 1-methylnaphthalene, at temperatures below 350?C, and subsequent separation of the upgraded samples into extract, residue, and gaseous product consisting of CO2 and a negligible amount of hydrocarbon gases at the treatment temperature. The extract is further separated into solvent-soluble fraction, Soluble, and solvent-insoluble fraction, Deposit, at room temperature. The method can produce a large amount of Soluble which consists of ashless, carbon-rich, low-molecular-weight compounds. From the viewpoint of practical application of the proposed method, it is desired to reduce the energy required to separate the Soluble from solvent. In this study a treatment using the solvent saturated with the Soluble has successfully been proposed in order to omit the energyconsuming distillation process of the solvent by enabling solid-liquid separation of the Soluble and solvent. |
| ISBN | 978-616-92228-1-1 |
