Thermogravimetric analysis and kinetic study of poplar wood pyrolysis
AbstractPoplar cultivated with Short Rotation Forestry (SRF) technique could be an important source of biomass. This dedicated crop could be produced to obtain solid biofuel transformed through combustion, pyrolysis or gasification into heat and power in CHP plants. In this work a kinetic study of the slow pyrolysis process of poplar wood (populus L.) is investigated with a thermogravimetric analyzer. A comparison of selected non-isothermal methods for analyzing solid-state kinetics data is presented. The weight loss was measured by TGA in nitrogen atmosphere. The samples were heated over a range of temperature from 298K to 973K with four different heating rates of 2, 5, 10, 15Kmin−1. The results obtained from thermal decomposition process indicate that there are three main stages such as dehydration, active and passive pyrolysis. In the DTG thermograms the temperature peaks at maximum weight loss rate changed with increasing heating rate. The activation energy and pre-exponential factor obtained by Kissinger method are 153.92kJmol−1 and 2.14×1012min−1, while, the same average parameters calculated from FWO and KAS methods are 158.58 and 157.27kJmol−1 and 7.96×1013 and 1.69×1013min−1, respectively. The results obtained from the first method represented actual values of kinetic parameters which are the same for the whole pyrolysis process, while the KAS and FWO methods presented apparent values of kinetic parameters, because they are the sum of the parameters of the physical processes and chemical reaction that occur simultaneously during pyrolysis. Experimental results showed that values of kinetic parameters obtained from three different methods are in good agreement, but KAS and FWO methods are more efficient in the description of the degradation mechanism of solid-state reactions. The devolatilization process was mathematically described by first order single reaction. The results of the kinetic study can be used in modeling devolatilization process through computational fluid dynamics (CFDs) to simulate mass and energy balances.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Bibliographic InfoArticle provided by Elsevier in its journal Applied Energy.
Volume (Year): 97 (2012)
Issue (Month): C ()
Contact details of provider:
Web page: http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Huang, Y.F. & Chiueh, P.T. & Kuan, W.H. & Lo, S.L., 2013. "Pyrolysis kinetics of biomass from product information," Applied Energy, Elsevier, vol. 110(C), pages 1-8.
- Wenjia Jin & Kaushlendra Singh & John Zondlo, 2013. "Pyrolysis Kinetics of Physical Components of Wood and Wood-Polymers Using Isoconversion Method," Agriculture, MDPI, Open Access Journal, vol. 3(1), pages 12-32, January.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Zhang, Lei).
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.