Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures
-
Miloslav Hartman
,
Karel Svoboda
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.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Characterisation of VOC composition of Slovak monofloral honeys by GC×GC-TOF-MS
- Combustion-derived CdO nanopowder as a heterogeneous basic catalyst for efficient synthesis of sulfonamides from aromatic amines using p-toluenesulfonyl chloride
- Molybdate sulfonic acid: preparation, characterization, and application as an effective and reusable catalyst for octahydroxanthene-1,8-dione synthesis
- Enantioselective extraction of hydrophilic 2-chloromandelic acid enantiomers by hydroxypropyl-β-cyclodextrin: experiments and modeling
- Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures
- Improvement of aquatic pollutant partition coefficient correlations using 1D molecular descriptors — chlorobenzene case study
- Mercury characterisation in urban particulate matter
- Thermal decomposition of lanthanide(III) complexes of bis-(salicylaldehyde)-1,3-propylenediimine Schiff base ligand
- Effect of hyamine on electrochemical behaviour of brass alloy in HNO3 solution
- Calorimetric determination of the effect of additives on cement hydration process
- Entrapment of ethyl vanillin in calcium alginate and calcium alginate/poly(vinyl alcohol) beads
- Facile synthesis of 3-substituted quinazoline-2,4-dione and 2,3-di-substituted quinazolinone derivatives
- Virtual screening of imidazole analogs as potential hepatitis C virus NS5B polymerase inhibitors
- A new phenanthroindolizidine alkaloid from Tylophora indica
