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Applicability of Scaling Approach for Analysis of Pyrolysis and Gasification of Porous Structures Composed of Solid Fuel Particles
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology. (Högtemperaturgasifikation)
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.ORCID iD: 0000-0002-1837-5439
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.
2012 (English)In: ISRN Mechanical Engineering, ISSN 2090-5122, E-ISSN 2090-5130, 207464Article in journal (Refereed) Published
Abstract [en]

Experimental research on the pyrolysis and gasification of randomly packed straw pellets was conducted with an emphasis on the reactive properties of the shrinking porous structure of the pellets. The apparent kinetics of such pyrolysis was approximated by the random pore, grain, and volumetric models. The best approximation results were obtained with the grain and random pore models. The self-organized oscillations of the pellet conversion rate during pyrolysis were observed. Two complementary explanations of the phenomenon are proposed.

Place, publisher, year, edition, pages
Hindawi Publishing Corporation, 2012. 207464
Keyword [en]
pyrolisys, straw pellets, steam gasification
National Category
Energy Engineering
Research subject
Chemical Engineering; Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-162107DOI: 10.5402/2012/207464OAI: oai:DiVA.org:kth-162107DiVA: diva2:796982
Note

QC 20150324

Available from: 2015-03-20 Created: 2015-03-20 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Study of pyrolysis and gasification of biomass from the self-organization perspective
Open this publication in new window or tab >>Study of pyrolysis and gasification of biomass from the self-organization perspective
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis focuses on the analysis of kinetics of i) low-temperature pyrolysis of gaseous hydrocarbons, ii) high-temperature steam gasification of char of wood pellets (>700oC), iii) high temperature pyrolysis of straw pellets in an atmosphere of argon and steam, and iv) high temperature pyrolysis of slices of transversally cut wooden sticks. The results of the kinetic measurements in the high-temperature cases are approximated using a least-square based optimization software, which was specially developed to analyse kinetics prone for deviation from the Arrhenius law.In the thesis a general analysis of the researched materials and kinetics of their pyrolysis and gasification is presented from the self-organization perspective. The energy transfer phenomena in both the pyrolysis and gasification processes of biomass are discussed with an emphasis on an analysis of basic phenomena involving the self-organized dynamics on fractal structures in the chosen biomass samples.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2015. vi, 82 p.
Keyword
pyrolisys, pellets, hydrogen, gasification
National Category
Metallurgy and Metallic Materials Energy Engineering Chemical Process Engineering
Research subject
Materials Science and Engineering; Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-162109 (URN)978-91-7595-478-3 (ISBN)
Public defence
2015-04-10, B1, Brinellvägen 23, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
Swedish Research Council
Note

QC 20150324

Available from: 2015-03-24 Created: 2015-03-20 Last updated: 2015-03-31Bibliographically approved

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Alevanau, AliaksandrDonaj, PawelYang, WeihongBlasiak, Wlodzimierz
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