Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures

Miloslav Hartman; Karel Svoboda; Michael Pohořelý; Michal Šyc; Michal Jeremiáš

doi:10.2478/s11696-012-0267-7

Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures

Miloslav Hartman^*
, Karel Svoboda
, Michael Pohořelý
, Michal Šyc
, Michal Jeremiáš

^*Corresponding author for this work

Not published at VTT

Czech Academy of Sciences
University of Chemistry and Technology, Prague

Research output: Contribution to journal › Article › Scientific › peer-review

13 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	164-172
Journal	Chemical Papers
Volume	67
Issue number	2
DOIs	https://doi.org/10.2478/s11696-012-0267-7
Publication status	Published - Feb 2013
MoE publication type	A1 Journal article-refereed

Funding

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.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

attrition
catalytic gasification
dolomitic lime
fluidized bed

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10.2478/s11696-012-0267-7

Cite this

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title = "Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures",

abstract = "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.",

keywords = "attrition, catalytic gasification, dolomitic lime, fluidized bed",

author = "Miloslav Hartman and Karel Svoboda and Michael Poho{\v r}el{\'y} and Michal {\v S}yc and Michal Jeremi{\'a}{\v s}",

note = "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. Fi{\v s}erov{\'a} for her assistance with the manuscript.",

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doi = "10.2478/s11696-012-0267-7",

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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

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DO - 10.2478/s11696-012-0267-7

M3 - Article

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SN - 0366-6352

VL - 67

SP - 164

EP - 172

JO - Chemical Papers

JF - Chemical Papers

IS - 2

ER -

Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures

Abstract

Funding

UN SDGs

Keywords

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