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Fast Pyrolysis of Technical Lignins in a Circulating Fluidized Bed Reactor

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Fast Pyrolysis of Technical Lignins in a Circulating Fluidized Bed Reactor (Volumen 12)

Miika Franck (Autor)

Previo

Lectura de prueba, PDF (620 KB)
Indice, PDF (520 KB)

ISBN-13 (Impresion) 9783736999657
ISBN-13 (E-Book) 9783736989658
Idioma Inglés
Numero de paginas 168
Laminacion de la cubierta mate
Edicion 1.
Serie SPE-Schriftenreihe
Volumen 12
Lugar de publicacion Göttingen
Lugar de la disertacion TU Hamburg
Fecha de publicacion 25.02.2019
Clasificacion simple Tesis doctoral
Area Química industrial e Ingeniería química
Ingeniería mecánica y de proceso
Tecnología del medio ambiente
Palabras claves lignin, cellulose, hemicellulose, biomass, wood, straw, pyrolysis, char combustion, CFB, circulating fluidized bed, riser reactor, fluidized bed, modeling, energetic analysis, two phase model, reaction kinetics, bed agglomeration, defluidization, mineral matter, product sampling, product composition, granulation, flash-DSC, SEC, GC, SEM
URL para pagina web externa https://www.tuhh.de/spe/research/dissertations.html
Descripcion

In search of an alternative for chemicals and energy from fossil fuels, lignin pyrolysis is experimentally investigated in a circulating fluidized bed. Deviation in pyrolysis behavior of a softwood Kraft lignin and a wheat straw hydrolysis lignin is analyzed by means of char morphology as well as overall yield and composition determination for gas, oil, and char. The influence of catalytically active mineral matter in lignin on the product distribution is investigated. Progressively, the fluidized bed pyrolysis process is modeled semi-empirically considering fluid dynamics, feedstock composition, micro-particle pyrolysis reactions and mass balances. The lignin secondary reaction kinetics from oil–to–gas are obtained from the Kraft lignin experimental data and a pyrolysis plant with integrated char and permanent gas combustion is modeled with a flowsheeting tool.