Fluidized Bed Gasification of Coal-Oil and Coal-Water-Oil Slurries by Oxygen –Steam and Oxygen-CO2 Mixtures

0374232 - ÚCHP 2012 RIV NL eng J - Journal Article
Svoboda, Karel - Pohořelý, Michael - Jeremiáš, Michal - Kameníková, Petra - Hartman, Miloslav - Skoblia, S. - Šyc, Michal
Fluidized Bed Gasification of Coal-Oil and Coal-Water-Oil Slurries by Oxygen –Steam and Oxygen-CO2 Mixtures.
Fuel Processing Technology. Roč. 95, č. 1 (2012), s. 16-26. ISSN 0378-3820. E-ISSN 1873-7188
R&D Projects: GA MŠMT 2B08048; GA MŠMT 7C08034
Grant - others:RFCR(XE) CT-2010-00009
Institutional research plan: CEZ:AV0Z40720504
Keywords : fluidized bed * gasification * coal slurries
Subject RIV: JE - Non-nuclear Energetics, Energy Consumption ; Use
Impact factor: 2.816, year: 2012
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Polish bituminous coal and German subbituminous coal were selected for preparation of coal-vegetable oil slurry (COS) and coal-oil in water slurry (COWS) with content of coal about 50 mass %. Laboratory, electrically heated gasifier with fluidized bed (FB) of sand particles was used for the gasification with steam-O2 and CO2-O2 mixtures (ER = 0.19 – 0.23) at temperatures between 800 and 925 °C. FB gasification with mixtures of O2/CO2 can generate producer gas with heating values (LHV) about 8 - 10 MJ/m3. The LHV values of the producer gas are influenced by relatively high content of methane, ethylene and BTX compounds. The yield of heavier tar compounds (excluding BTX) is high, exceeding 20 g tar/kg of dry German coal based COS and 36 g/kg of fuel for Polish coal based COS. FB gasification of the COWS prepared from the Polish coal with 40 mass % of water and 12 mass % of oil by steam–O2 and CO2-O2 mixtures (ER =0.20) reduces tar yield approx. to an half.
Permanent Link: http://hdl.handle.net/11104/0207197