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Process superstructure optimization for resin and aromatic monomer production from kraft lignin

TitleProcess superstructure optimization for resin and aromatic monomer production from kraft lignin
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2021
AuthorsGalanopoulos, C., Giuliano Antonio, Koutinas A., de Bari I., and Barletta D.
JournalChemical Engineering Transactions
Volume86
Pagination1453-1458
ISSN22839216
Abstract

Kraft lignin conversion to value-added products is an alternative way to manage the main pulp and paper secondary stream thus contributing to reducing avoid greenhouse gas emissions compared to equivalent fossil-based processes. Process simulation and integration can help to identify the most promising pathways and increase the profitability of the process. This work presents results of a comparison between the process optimization of two different potential products that were modeled and analyzed. Aromatic monomers and phenol-formaldehyde resins were considered as possible products by means of alternative process pathways, including hydrothermal liquefaction, hydrodeoxygenation, pyrolysis, dissolution with deep eutectic solvents, hot water extraction, and resin synthesis. Mixed-integer nonlinear programming was applied to optimize the superstructure and obtain the maximum lignin cost. A sensitivity analysis in terms of the final products selling price was performed to consider the market variability. Minimum selling prices of aromatic monomers and phenol-formaldehyde resins for a feasible lignin process were calculated. Maximum lignin cost larger than 100 €/t resulted acceptable only for phenol-formaldehyde resins selling price larger than 0.6 €/kg or for AM selling price larger than 1.80 €/kg. Aromatic monomers turned out to be the optimal product if its selling price is larger 1.20 €/kg and the phenol-formaldehyde resins cost is lower than or equal to 0.6 €/kg. Higher phenol-formaldehyde resins selling prices make this product more convenient. Copyright © 2021, AIDIC Servizi S.r.l.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85109496611&doi=10.3303%2fCET2186243&partnerID=40&md5=15cab24824ec05194c07f83de3d222a2
DOI10.3303/CET2186243
Citation KeyGalanopoulos20211453