Change search
ReferencesLink to record
Permanent link

Direct link
Co-gasification of crude glycerol and black liquor blends: char morphology and gasification kinetics
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-8235-9839
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Umeå University, Department of Applied Physics and Electronics, Thermochemical Energy Conversion Laboratory,.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Show others and affiliations
Number of Authors: 5
2017 (English)In: Energy Technology, ISSN 2194-4296Article in journal (Refereed) Epub ahead of print
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.  

Place, publisher, year, edition, pages
2017.
Keyword [en]
alkali; gasification; black liquor; glycerol; kinetics
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-59768DOI: 10.1002/ente.201600569OAI: oai:DiVA.org:ltu-59768DiVA: diva2:1037460
Projects
LTU Area of Excellence in Research and Innovation - Renewable Energy
Available from: 2016-10-15 Created: 2016-10-15 Last updated: 2017-01-13

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://dx.doi.org/10.1002/ente.201600569

Search in DiVA

By author/editor
Kirtania, KawnishHäggström, GustavUmeki, KentaroFurusjö, Erik
By organisation
Energy Science
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link