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Cogasification of crude glycerol and black liquor blends: char morphology and gasification kinetics
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0002-8235-9839
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0001-5420-965X
Umeå University, Department of Applied Physics and Electronics, Thermochemical Energy Conversion Laboratory,.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0001-6081-5736
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Antal upphovsmän: 52017 (Engelska)Ingår i: Energy Technology, ISSN 2194-4296, Vol. 5, nr 8, s. 1272-1281Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study assesses the feasibility of black liquor/glycerol blends as potential gasification feedstock. The char gasification reactivity and kinetics were studied at T = 750 °C, 800 °C, 850 °C and 900 °C for 20% and 40% blends of glycerol with black liquor. Three qualities of glycerol were used including two industrial grade crude glycerols. Gasification rates were similar for all blends, indicating sufficient alkali metal catalysis also for the char blends (Alkali/C atomic ratio between 0.45 and 0.55). The blends with the most impure glycerol (containing K) were found to have the lowest activation energies (~120 kJ/mol) and reaction times for char gasification indicating fuel properties suitable for gasification. Char particles from different blends showed similar surface morphology as black liquor chars with even surface distribution of alkali elements. A loss of alkali (mainly, K) from the fuel blends during pyrolysis indicated the necessity to perform gas-phase studies of alkali release. Overall, these results encourage the use of glycerol as a potential gasification feedstock for catalytic gasification based bio-refineries.  

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2017. Vol. 5, nr 8, s. 1272-1281
Nyckelord [en]
alkali, gasification, black liquor, glycerol, kinetics
Nationell ämneskategori
Energiteknik
Forskningsämne
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-59768DOI: 10.1002/ente.201600569ISI: 000407591200020Scopus ID: 2-s2.0-85010628698OAI: oai:DiVA.org:ltu-59768DiVA, id: diva2:1037460
Projekt
LTU Area of Excellence in Research and Innovation - Renewable Energy
Anmärkning

Validerad;2017;Nivå 2;2017-08-16 (inah)

Tillgänglig från: 2016-10-15 Skapad: 2016-10-15 Senast uppdaterad: 2019-09-13Bibliografiskt granskad

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Kirtania, KawnishHäggström, GustavUmeki, KentaroFurusjö, Erik

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