Theoretical and experimental approach of fuel gas and carbon black production from coal tar pitch by thermal plasma process

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dc.contributor.authorPrado, E. S.P.
dc.contributor.authorMiranda, F. S.
dc.contributor.authorMarquesi, A. R.
dc.contributor.authorEssiptchouk, A. [UNESP]
dc.contributor.authorLabat Amaral, G. A.
dc.contributor.authorda Silva Sobrinho, A. S.
dc.contributor.authorPetraconi, G.
dc.contributor.authorBaldan, M. R.
dc.contributor.institutionNational Institute of Space Research
dc.contributor.institutionTechnological Institute of Aeronautics
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:47:41Z
dc.date.available2022-04-28T19:47:41Z
dc.date.issued2021-01-01
dc.description.abstractThe processing of coal tar pitch (CTP) to produce clean fuel gas and carbon black (CB) is studied in a plasma reactor equipped with a direct-current plasma torch. The composition of the gas produced and energy costs were estimated theoretically for the CTP pyrolysis and gasification processes by two oxidants, namely oxygen and water vapor. We have found that the main gaseous compounds obtained in the pyrolysis and gasification processes are hydrogen (H2), carbon monoxide (CO), and very often carbon dioxide (CO2). For the pyrolysis case, the mean value of the synthesis gas concentration reaches a major value of 98 vol.% (H2–81 vol.%, CO–17. vol.%). However, only 23% of the initial CTP is transformed into gas phase at 1100 K and its content increases up to 37.4% at a temperature of 3000 K. For oxygen gasification, the syngas quantity is little less compared to the pyrolysis case and attains 96.6 vol.% (H2–26.5 vol.%, CO–70.1 vol.%) for T > 1100 K. An intermediate syngas content for the water steam gasification is 97.8 vol.% (with H2–55.8 vol.% and CO–42.0 vol.%). The CB produced was composed of well-defined spherical particles of 30-nm size. Furthermore, it is composed of carbon (98.2%), and followed by oxygen (1.8%) with a surface area of 97 m2 g−1. The thermal plasma system shows high efficiency in conversion of CTP into high-value-added products.en
dc.description.affiliationNational Institute of Space Research
dc.description.affiliationTechnological Institute of Aeronautics
dc.description.affiliationSão Paulo State University
dc.description.affiliationUnespSão Paulo State University
dc.identifierhttp://dx.doi.org/10.1080/09593330.2021.2003437
dc.identifier.citationEnvironmental Technology (United Kingdom).
dc.identifier.doi10.1080/09593330.2021.2003437
dc.identifier.issn1479-487X
dc.identifier.issn0959-3330
dc.identifier.scopus2-s2.0-85120071653
dc.identifier.urihttp://hdl.handle.net/11449/222939
dc.language.isoeng
dc.relation.ispartofEnvironmental Technology (United Kingdom)
dc.sourceScopus
dc.subjectcarbon black
dc.subjectCoal tar pitch
dc.subjectequilibrium calculation
dc.subjectFuel Gas
dc.subjectthermal plasma
dc.titleTheoretical and experimental approach of fuel gas and carbon black production from coal tar pitch by thermal plasma processen
dc.typeArtigo
unesp.author.orcid0000-0002-3727-2347[1]
unesp.author.orcid0000-0002-5012-4592[2]
unesp.author.orcid0000-0001-9961-4237[7]

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