TY - JOUR
T1 - Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures
AU - Hartman, Miloslav
AU - Svoboda, Karel
AU - Pohořelý, Michael
AU - Šyc, Michal
AU - Jeremiáš, Michal
N1 - Funding Information:
Acknowledgements. The authors gratefully acknowledge financial support of this research awarded by the Grant Agency of the Academy of Science of the Czech Republic through Grant No. IAA 400720701. Thanks are due to the Research Fund for Coal and Steel of the EC for support through Grant No. RFCR-CT-2010-00009 and the Ministry of Education, Youth and Sport of CR (Support No. 7C11009). Our thanks also go to Mrs. E. Fišerová for her assistance with the manuscript.
PY - 2013/2
Y1 - 2013/2
N2 - Results of an experimental study on the rate of attrition of lime catalyst/sorbent in a high-temperature, turbulent fluidized bed with quartz sand are presented. Batch measurements were conducted at 850 C in an electrically heated gasification reactor of the inner diameter of 5.1 cm with three samples of high-grade dolomitic lime of the particle size 450 μm, 715 μm, and 1060 μm, respectively. In addition to the influence of the particle size, the effect of operating (elapsed) time was investigated at different superficial gas velocities. Assuming that the attrition rate decreases exponentially with time, a simple mechanistic model, enabling the correlation of the measured experimental data, was developed. The course of the lime particles attrition is described as a function of the elapsed time, excess gas velocity, and particle size. The presented approach and the results might be applicable for the attrition of high-grade dolomitic lime, particularly in fluidized gasification of biomass.
AB - Results of an experimental study on the rate of attrition of lime catalyst/sorbent in a high-temperature, turbulent fluidized bed with quartz sand are presented. Batch measurements were conducted at 850 C in an electrically heated gasification reactor of the inner diameter of 5.1 cm with three samples of high-grade dolomitic lime of the particle size 450 μm, 715 μm, and 1060 μm, respectively. In addition to the influence of the particle size, the effect of operating (elapsed) time was investigated at different superficial gas velocities. Assuming that the attrition rate decreases exponentially with time, a simple mechanistic model, enabling the correlation of the measured experimental data, was developed. The course of the lime particles attrition is described as a function of the elapsed time, excess gas velocity, and particle size. The presented approach and the results might be applicable for the attrition of high-grade dolomitic lime, particularly in fluidized gasification of biomass.
KW - attrition
KW - catalytic gasification
KW - dolomitic lime
KW - fluidized bed
UR - http://www.scopus.com/inward/record.url?scp=84874450769&partnerID=8YFLogxK
U2 - 10.2478/s11696-012-0267-7
DO - 10.2478/s11696-012-0267-7
M3 - Article
AN - SCOPUS:84874450769
SN - 0366-6352
VL - 67
SP - 164
EP - 172
JO - Chemical Papers
JF - Chemical Papers
IS - 2
ER -
