Bio-oils were produced within a fast pyrolysis microreactor at 400°C from Pinus taeda (Loblolly pine) with varying residence times. This study has considered six residence times, evaluating the products of the reaction between 10 s and 120 s. The collected bio-oils and solids were analyzed for their calorific values and yields. Heating rates greater than 100°C/s were achieved, allowing for isothermal conditions throughout the majority of the reaction despite short residence times. The predictive capabilities of thermogravimetric analysis derived Arrhenius coefficients are evaluated and a new two component degradation model is empirically derived, showing a much improved representation of the fast pyrolysis process.

1.
Bridgwater
,
A. V.
, and
Peacocke
,
G. V. C.
, 2000, “
Fast Pyrolysis Processes for Biomass
,”
Renewable Sustainable Energy Rev.
1364-0321,
4
(
1
), pp.
1
73
.
2.
Cui
,
L.
,
Song
,
W.
,
Zhang
,
J.
,
Yao
,
J.
, and
Lin
,
W.
, 2007, “
Influence of the Gas and Particle Residence Time on Fast Pyrolysis of Lignite
,”
ASME J. Energy Resour. Technol.
0195-0738,
129
(
2
), pp.
152
158
.
3.
Srinivas
,
T.
,
Gupta
,
A. V. S. S. K. S.
, and
Reddy
,
B. V.
, 2009, “
Thermodynamic Equilibrium Model and Exergy Analysis of a Biomass Gasifier
,”
ASME J. Energy Resour. Technol.
0195-0738,
131
(
3
), pp.
031801
.
4.
Di Blasi
,
C.
, 1996, “
Kinetic and Heat Transfer Control in the Slow and Flash Pyrolysis of Solids
,”
Ind. Eng. Chem. Res.
0888-5885,
35
, pp.
37
46
.
5.
Bharadwaj
,
A.
,
Baxter
,
L. L.
, and
Robinson
,
A. L.
, 2004, “
Effects of Intraparticle Heat and Mass Transfer on Biomass Devolatilization: Experimental Results and Model Predictions
,”
Energy Fuels
0887-0624,
18
, pp.
1021
1031
.
6.
He
,
Q.
,
Winter
,
F.
, and
Lu
,
J. -D.
, 2002, “
Analysis of the Heat Transfer Mechanism in High-Temperature Circulating Fluidized Beds by a Numerical Model
,”
ASME J. Energy Resour. Technol.
0195-0738,
124
(
1
), pp.
34
39
.
7.
Zhang
,
J.
,
Toghiani
,
H.
,
Mohan
,
D.
,
Charles
,
U.
,
Pittman
,
J.
, and
Toghiani
,
R. K.
, 2007, “
Product Analysis and Thermodynamic Simulations From the Pyrolysis of Several Biomass Feedstocks
,”
Energy Fuels
0887-0624,
21
, pp.
2373
2385
.
8.
Korbee
,
R.
,
van Ommen
,
J. R.
,
Lensselink
,
J.
,
Nijenhuis
,
J.
,
Kiel
,
J. H. A.
, and
van den Bleek
,
C. M.
, 2006, “
Early Agglomeration Recognition System (EARS)
,”
ASME J. Energy Resour. Technol.
0195-0738,
128
(
2
), pp.
143
149
.
9.
Miller
,
R. S.
, and
Bellan
,
J.
, 1997, “
A Generalized Biomass Pyrolysis Model Based on the Superimposed Cellulose Hemicellulose and Lignin Kinetics
,”
Combust. Sci. Technol.
0010-2202,
126
, pp.
97
137
.
10.
Di Blasi
,
C.
, 1997, “
Influences of Physical Properties on Biomass Devolatilization Characteristics
,”
Fuel
0016-2361,
76
(
10
), pp.
957
964
.
11.
Di Blasi
,
C.
, 1996, “
Heat, Momentum and Mass Transport Through a Shrinking Biomass Particle Exposed to Thermal Radiation
,”
Chem. Eng. Sci.
0009-2509,
51
(
7
), pp.
1121
1132
.
12.
Grønli
,
M. G.
, and
Melaaen
,
M. C.
, 2000, “
Mathematical Model for Wood Pyrolysis-Comparison of Experimental Measurements With Model Predictions
,”
Energy Fuels
0887-0624,
14
, pp.
791
800
.
13.
Grønli
,
M. G.
, 1996, “
A Theoretical and Experimental Study of the Thermal Degradation of Biomass
,” Ph.D. thesis, The Norwegian University of Science and Technology, Trondheim, Norway.
14.
Di Blasi
,
C.
, 2008, “
Modeling Chemical and Physical Processes of Wood and Biomass Pyrolysis
,”
Pror. Energy Combust. Sci.
,
34
, pp.
47
90
.
15.
Wang
,
J.
,
Zhang
,
M.
,
Chen
,
M.
,
Min
,
F.
,
Zhang
,
S.
,
Ren
,
Z.
, and
Yan
,
Y.
, 2006, “
Catalytic Effects of Six Inorganic Compounds on Pyrolysis of Three Kinds of Biomass
,”
Thermochim. Acta
0040-6031,
444
, pp.
110
114
.
16.
Scott
,
S. A.
,
Dennis
,
J. S.
,
Davidson
,
J. F.
, and
Hayhurst
,
A. N.
, 2006, “
An Algorithm for Determining the Kinetics of Devolatilisation of Complex Solid Fuels From Thermogravimetric Experiments
,”
Chem. Eng. Sci.
0009-2509,
61
, pp.
1339
2348
.
17.
Sutcu
,
H.
, 2008, “
The Examination of Liquid, Solid, and Gas Products Obtained by the Pyrolysis of Three Different Peat and Reed Samples
,”
ASME J. Energy Resour. Technol.
0195-0738,
130
, p.
021401
.
18.
Lanzetta
,
M.
,
Di Blasi
,
C.
, and
Buonanno
,
F.
, 1997, “
An Experimental Investigation of Heat-Transfer Limitations in the Flash Pyrolysis of Cellulose
,”
Ind. Eng. Chem. Res.
0888-5885,
36
, pp.
542
552
.
19.
Diebold
,
J. P.
,
Milne
,
T. A.
,
Czernik
,
S.
,
Oasmaa
,
A.
,
Bridgwater
,
A. V.
,
Cuevas
,
A.
,
Gust
,
S.
,
Huffman
,
D.
, and
Piskorz
,
J.
, 1997, “
Proposed Specifications for Various Grades of Pyrolysis Oils
,”
Developments in Thermochemical Biomass Conversion
,
Chapman and Hall
,
Suffolk, Great Britain
, Vol.
1
.
20.
Huber
,
G. W.
,
Iborra
,
S.
, and
Corma
,
A.
, 2006, “
Synthesis of Transportation Fuels From Biomass: Chemistry, Catalysts, and Engineering
,”
Chem. Rev. (Washington, D.C.)
0009-2665,
106
, pp.
4044
4098
.
21.
Mayor
,
J. R.
, and
Williams
,
A.
, 2008, “
Design, Development and Characterization of a Micro-Reactor for Fast Pyrolysis of Biomass Feedstocks
,”
ASME Energy Systems Design and Analysis Conference 2008
, Haifa, Israel, July 7–9, p.
10
.
22.
Scientech Inc
, 2009, Scientech Zeta Series Specifications, www.scientech-inc.com/zeta.phtmlwww.scientech-inc.com/zeta.phtml
23.
Sannigrahi
,
P.
,
Ragauskas
,
A.
, and
Miller
,
S.
, 2008, “
Effects of Two-Stage Dilute Acid Pretreatment on the Structure and Composition of Lignin and Cellulose in Loblolly Pine
,”
BioEnergy Research
,
1
(
3–4
), pp.
205
214
.
24.
Sannigrahi
,
P.
,
Ragauskas
,
A. J.
, and
Miller
,
S. J.
, 2010, “
Lignin Structural Modifications Resulting From Ethanol Organosolv Treatment of Loblolly Pine
,”
Energy Fuels
0887-0624,
24
, pp.
683
689
.
25.
Fu
,
Q.
,
Argyropoulos
,
D. S.
,
Tilotta
,
D. C.
, and
Lucia
,
L. A.
, 2008, “
Understanding the Pyrolysis of CCA-Treated Wood: Part I. Effect of Metal Ions
,”
J. Anal. Appl. Pyrolysis
0165-2370,
81
, pp.
60
64
.
26.
Reed
,
T. B.
, and
Gaur
,
S.
, 1997, “
The High Heat of Fast Pyrolysis for Large Particles
,”
Developments in Thermochemical Biomass Conversion
,
Chapman and Hall
,
Suffolk, Great Britain
, Vol.
1
.
27.
Scott
,
D. S.
,
Majerski
,
P.
,
Piskorz
,
J.
, and
Radlein
,
D.
, 1999, “
A Second Look at Fast Pyrolysis of Biomass—The RTI Process
,”
J. Anal. Appl. Pyrolysis
0165-2370,
51
, pp.
23
37
.
28.
Bevington
,
P. R.
, and
Robinson
,
D. K.
, 2003,
Data Reduction and Error Analysis for the Physical Sciences
, 3rd ed.,
McGraw-Hill
,
New York
.
29.
Kline
,
S. J.
, and
McClintock
,
F. A.
, 1953, “
Describing Uncertainties in Single-Sample Experiments
,”
Mech. Eng. (Am. Soc. Mech. Eng.)
0025-6501,
75
(
1
), pp.
3
8
.
30.
Horne
,
P. A.
, and
Williams
,
P. T.
, 1996, “
Influence of Temperature on the Products From the Flash Pyrolysis of Biomass
,”
Fuel
0016-2361,
75
(
9
), pp.
1051
1059
.
31.
Shaddix
,
C. R.
, and
Huey
,
S. P.
, 1997, “
Combustion Characteristics of Fast Pyrolysis Oils
,”
Developments in Thermochemical Biomass Conversion
,
Chapman and Hall
,
Suffolk, Great Britain
, Vol.
1
.
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