Fluidized bed gasification of coal-oil and coal-water-oil slurries by a gas containing CO2-oxygen mixture

Karel Svoboda; Michael Pohořelý; Michal Jeremiáš; Petra Kameníková; Siarhei Skoblja; Michal Šyc

doi:10.3303/CET1021036

Fluidized bed gasification of coal-oil and coal-water-oil slurries by a gas containing CO₂-oxygen mixture

Karel Svoboda^*, Michael Pohořelý, Michal Jeremiáš, Petra Kameníková, Siarhei Skoblja, Michal Šyc

^*Corresponding author for this work

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Research output: Contribution to journal › Article in a proceedings journal › Scientific › peer-review

Abstract

Laboratory fluidized bed (FB) gasification of coal-vegetable oil slurries (COS) with 50 mass % of coal by CO₂-O₂ mixtures (ER ≈ 0.2, CO₂/dry fuel mass ratio = 1 - 2.4) at temperatures around 850 - 900 oC produced fuel gas with LHV values about 8 - 12 MJ/kg fuel. Composition of producer gas was studied by GC (major and minor gas components). The yield of heavier tar components (excluding BTX) exceeds 20 g tar/kg of dry German (lignite) coal and 36 g tar/kg of dry Polish bituminous coal. FB gasification of coal-oil in water emulsion slurry (COWS) prepared from the Polish coal and containing 47 mass % of coal, 40 mass % of water and 12 mass % of vegetable oil by CO₂-O₂ mixtures at similar operating conditions moderately reduces heating value (LHV) of dry, N₂ free producer gas in comparison with gasification of COS, elevates H₂ concentrations and substantially reduces yield of tar. Excessive entrainment of char particles from the FB can be solved by recirculation (circulating FB gasification).

Original language	English
Pages (from-to)	211-216
Number of pages	6
Journal	Chemical Engineering Transactions
Volume	21
DOIs	https://doi.org/10.3303/CET1021036
Publication status	Published - 2010
MoE publication type	A4 Article in a conference publication

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title = "Fluidized bed gasification of coal-oil and coal-water-oil slurries by a gas containing CO2-oxygen mixture",

abstract = "Laboratory fluidized bed (FB) gasification of coal-vegetable oil slurries (COS) with 50 mass % of coal by CO2-O2 mixtures (ER ≈ 0.2, CO2/dry fuel mass ratio = 1 - 2.4) at temperatures around 850 - 900 oC produced fuel gas with LHV values about 8 - 12 MJ/kg fuel. Composition of producer gas was studied by GC (major and minor gas components). The yield of heavier tar components (excluding BTX) exceeds 20 g tar/kg of dry German (lignite) coal and 36 g tar/kg of dry Polish bituminous coal. FB gasification of coal-oil in water emulsion slurry (COWS) prepared from the Polish coal and containing 47 mass % of coal, 40 mass % of water and 12 mass % of vegetable oil by CO2-O2 mixtures at similar operating conditions moderately reduces heating value (LHV) of dry, N2 free producer gas in comparison with gasification of COS, elevates H2 concentrations and substantially reduces yield of tar. Excessive entrainment of char particles from the FB can be solved by recirculation (circulating FB gasification).",

author = "Karel Svoboda and Michael Poho{\v r}el{\'y} and Michal Jeremi{\'a}{\v s} and Petra Kamen{\'i}kov{\'a} and Siarhei Skoblja and Michal {\v S}yc",

year = "2010",

doi = "10.3303/CET1021036",

language = "English",

volume = "21",

pages = "211--216",

journal = "Chemical Engineering Transactions",

issn = "1974-9791",

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T1 - Fluidized bed gasification of coal-oil and coal-water-oil slurries by a gas containing CO2-oxygen mixture

AU - Svoboda, Karel

AU - Pohořelý, Michael

AU - Jeremiáš, Michal

AU - Kameníková, Petra

AU - Skoblja, Siarhei

AU - Šyc, Michal

PY - 2010

Y1 - 2010

N2 - Laboratory fluidized bed (FB) gasification of coal-vegetable oil slurries (COS) with 50 mass % of coal by CO2-O2 mixtures (ER ≈ 0.2, CO2/dry fuel mass ratio = 1 - 2.4) at temperatures around 850 - 900 oC produced fuel gas with LHV values about 8 - 12 MJ/kg fuel. Composition of producer gas was studied by GC (major and minor gas components). The yield of heavier tar components (excluding BTX) exceeds 20 g tar/kg of dry German (lignite) coal and 36 g tar/kg of dry Polish bituminous coal. FB gasification of coal-oil in water emulsion slurry (COWS) prepared from the Polish coal and containing 47 mass % of coal, 40 mass % of water and 12 mass % of vegetable oil by CO2-O2 mixtures at similar operating conditions moderately reduces heating value (LHV) of dry, N2 free producer gas in comparison with gasification of COS, elevates H2 concentrations and substantially reduces yield of tar. Excessive entrainment of char particles from the FB can be solved by recirculation (circulating FB gasification).

AB - Laboratory fluidized bed (FB) gasification of coal-vegetable oil slurries (COS) with 50 mass % of coal by CO2-O2 mixtures (ER ≈ 0.2, CO2/dry fuel mass ratio = 1 - 2.4) at temperatures around 850 - 900 oC produced fuel gas with LHV values about 8 - 12 MJ/kg fuel. Composition of producer gas was studied by GC (major and minor gas components). The yield of heavier tar components (excluding BTX) exceeds 20 g tar/kg of dry German (lignite) coal and 36 g tar/kg of dry Polish bituminous coal. FB gasification of coal-oil in water emulsion slurry (COWS) prepared from the Polish coal and containing 47 mass % of coal, 40 mass % of water and 12 mass % of vegetable oil by CO2-O2 mixtures at similar operating conditions moderately reduces heating value (LHV) of dry, N2 free producer gas in comparison with gasification of COS, elevates H2 concentrations and substantially reduces yield of tar. Excessive entrainment of char particles from the FB can be solved by recirculation (circulating FB gasification).

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DO - 10.3303/CET1021036

M3 - Article in a proceedings journal

AN - SCOPUS:78650288268

SN - 1974-9791

VL - 21

SP - 211

EP - 216

JO - Chemical Engineering Transactions

JF - Chemical Engineering Transactions

ER -

Fluidized bed gasification of coal-oil and coal-water-oil slurries by a gas containing CO₂-oxygen mixture

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