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Mixing of Fast Pyrolysis Oil and Black Liquor: preparing an Improved Gasification Feedstock
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0003-1806-4187
SP Energy Technology Center AB.
Number of Authors: 22016 (English)In: Energy & Fuels, ISSN 0887-0624, Vol. 30, no 12, p. 10575-10582Article in journal (Refereed) Published
Abstract [en]

Co-gasification of fast pyrolysis oil and black liquor can be used to increase the size and improve profitability of pulp mill integrated biorefineries. The acids present in pyrolysis oil limit the amount that can be mixed into black liquor without causing precipitation of the black liquor dissolved lignin. This work shows that a simple model based on pyrolysis oil total acid number, including weak phenolic acids, can be used to predict the maximum pyrolysis oil fraction in blends. The maximum oil fraction is 20–25% for typical pyrolysis oil but can be increased up to at least 50% mass, corresponding to 70% energy, by addition of base. Thermodynamic equilibrium calculations are used to understand the effects of blend composition, including any added base, on the performance of a commercial scale gasification process. A substantial increase in overall gasification efficiency is observed with increasing pyrolysis oil fraction.

Place, publisher, year, edition, pages
2016. Vol. 30, no 12, p. 10575-10582
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-60581DOI: 10.1021/acs.energyfuels.6b02383ISI: 000390072900060Scopus ID: 2-s2.0-85006485760OAI: oai:DiVA.org:ltu-60581DiVA, id: diva2:1048307
Funder
Swedish Energy Agency, 38026-1
Note

Validerad; 2017; Nivå 2; 2016-12-27 (andbra)

Available from: 2016-11-21 Created: 2016-11-21 Last updated: 2018-07-10Bibliographically approved

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Publisher's full textScopushttp://pubs.acs.org/doi/abs/10.1021/acs.energyfuels.6b02383

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Furusjö, ErikPettersson, Esbjörn

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