Parallels between slow pyrolysis of Estonian oil shale and forest biomass residues |
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| Affiliation: | 1. Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, SE 901 83 Umeå, Sweden;2. RISE Energy Technology Center, Box 726, SE 941 28 Piteå, Sweden;1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;2. Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha 410083, China;3. School of Metallurgy and Environment, Central South University, Changsha 410083, China;1. Area Fisicoquímica, DETEMA, Facultad de Química – Universidad de la República, Gral. Flores 2124 CC 1157, 11800 Montevideo, Uruguay;2. School of Civil Engineering, The University of Queensland, Brisbane QLD 4072, Australia;1. Soil Conservation Engineering Laboratory, Environmental Engineering Graduate Program of Rural Federal of Pernambuco University, Av. Dom Manuel Medeiros, N/A, 52171900 Recife, PE, Brazil;2. Environmental Engineering Graduate Program of Rural Federal of Pernambuco University by PNPD/CAPES Brazilian Program, Av. Dom Manuel Medeiros, N/A, 52171900 Recife, PE, Brazil;3. MEtRiCS, Departamento de Ciências e Tecnologia da Biomassa, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal;1. Division of Soil & Land Resources, 875 Perimeter Drive, MS 2339, University of Idaho, Moscow, ID 83844-2339, USA;2. Department of Geological Sciences, 875 Perimeter Drive, MS 3022, University of Idaho, Moscow, ID 83844-3022, USA;3. Geology Department, 217 McGlothlin Street Hall, The College of William & Mary, Williamsburg, VA 23187, USA |
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| Abstract: | Different types of forest residual biomass, including pine wood, pine bark and spruce needles, and Estonian Kukersite oil shale, were parallelly subjected to the slow pyrolysis in similar conditions. A Fischer assay, modeling industrial semi-coking retorts, was used. Both the yield and the composition of liquid, gaseous and solid products of pyrolysis were determined. FTIR-spectroscopic and chromatographic methods were used to study products group and individual composition. Common and specific features in biomass and oil shale semi-coking have been described. In comparison with oil shale, the biomass yielded less oil and more gas. Specifically large amounts of reaction water and carbon dioxide were obtained in biomass pyrolysis resulting in formation of significantly deoxygenated liquid and solid products. Bio-oils can be distinguished by the solubility in conventional solvents. Kukersite shale oil and the benzene-soluble fractions of different bio-oils were characterized by similar group composition. |
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