Analysis of trace compounds generated by pressurized oxygen blown entrained flow biomass gasification
Trace compounds were measured in synthesis gas and waste water from a pilot scale pressurized entrained flow oxygen blown biomass gasifier. The feedstock used was milled soft stem wood powder. Gaseous trace compounds were analyzed by gas chromatography. Up to 20 ppm of hydrogen sulfide was observed...
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Veröffentlicht in: | Environmental Progress and Sustainable Energy 2014-10, Vol.33 (3), p.699-705 |
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description | Trace compounds were measured in synthesis gas and waste water from a pilot scale pressurized entrained flow oxygen blown biomass gasifier. The feedstock used was milled soft stem wood powder. Gaseous trace compounds were analyzed by gas chromatography. Up to 20 ppm of hydrogen sulfide was observed in the cold synthesis gas and the concentration seemed to be independent of the oxygen equivalence ratio (ER). Benzene varied from 30 to 1100 ppm, strongly depended on the ER and correlated well with the methane concentration. The concentrations of acetylene and ethylene increased as the ER was reduced and could have acted as precursors for the observed soot particles which were characterized using thermogravimetric analysis, X‐ray diffraction, and scanning electron microscopy. Common polycyclic aromatic hydrocarbons from high temperature biomass gasification such as pyrene, phenanthrene, fluoranthene, and naphthalene were observed in low concentrations in the soot, in the cold synthesis gas and also in the waste water from the quench. Inorganic elements from the feedstock were observed in the waste water. Comparisons were also made with previous results from a black liquor gasifier. © 2014 American Institute of Chemical Engineers Environ Prog, 33: 699–705, 2014 |
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Common polycyclic aromatic hydrocarbons from high temperature biomass gasification such as pyrene, phenanthrene, fluoranthene, and naphthalene were observed in low concentrations in the soot, in the cold synthesis gas and also in the waste water from the quench. Inorganic elements from the feedstock were observed in the waste water. 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W.</creatorcontrib><creatorcontrib>Molinder, Roger</creatorcontrib><creatorcontrib>Weiland, Fredrik</creatorcontrib><creatorcontrib>Johansson, Ann-Christine</creatorcontrib><title>Analysis of trace compounds generated by pressurized oxygen blown entrained flow biomass gasification</title><title>Environmental Progress and Sustainable Energy</title><addtitle>Environ. Prog. Sustainable Energy</addtitle><description>Trace compounds were measured in synthesis gas and waste water from a pilot scale pressurized entrained flow oxygen blown biomass gasifier. The feedstock used was milled soft stem wood powder. Gaseous trace compounds were analyzed by gas chromatography. Up to 20 ppm of hydrogen sulfide was observed in the cold synthesis gas and the concentration seemed to be independent of the oxygen equivalence ratio (ER). Benzene varied from 30 to 1100 ppm, strongly depended on the ER and correlated well with the methane concentration. The concentrations of acetylene and ethylene increased as the ER was reduced and could have acted as precursors for the observed soot particles which were characterized using thermogravimetric analysis, X‐ray diffraction, and scanning electron microscopy. Common polycyclic aromatic hydrocarbons from high temperature biomass gasification such as pyrene, phenanthrene, fluoranthene, and naphthalene were observed in low concentrations in the soot, in the cold synthesis gas and also in the waste water from the quench. Inorganic elements from the feedstock were observed in the waste water. 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W.</creatorcontrib><creatorcontrib>Molinder, Roger</creatorcontrib><creatorcontrib>Weiland, Fredrik</creatorcontrib><creatorcontrib>Johansson, Ann-Christine</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>SwePub</collection><collection>SwePub Conference</collection><jtitle>Environmental Progress and Sustainable Energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Öhrman, Olov G. 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Benzene varied from 30 to 1100 ppm, strongly depended on the ER and correlated well with the methane concentration. The concentrations of acetylene and ethylene increased as the ER was reduced and could have acted as precursors for the observed soot particles which were characterized using thermogravimetric analysis, X‐ray diffraction, and scanning electron microscopy. Common polycyclic aromatic hydrocarbons from high temperature biomass gasification such as pyrene, phenanthrene, fluoranthene, and naphthalene were observed in low concentrations in the soot, in the cold synthesis gas and also in the waste water from the quench. Inorganic elements from the feedstock were observed in the waste water. Comparisons were also made with previous results from a black liquor gasifier. © 2014 American Institute of Chemical Engineers Environ Prog, 33: 699–705, 2014</abstract><cop>Hoboken, NJ</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/ep.11975</doi><tpages>7</tpages></addata></record> |
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subjects | Applied sciences biomass Biomass energy biorefinery entrained flow Environmental engineering Exact sciences and technology Gasification General purification processes Pollution trace compounds Wastewaters Water treatment and pollution |
title | Analysis of trace compounds generated by pressurized oxygen blown entrained flow biomass gasification |
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