Sulfur Binding by Ash in Oil Shale Boilers

Arro, H.; Prikk, A.; Pihu, T.

doi:10.3176/oil.2001.2.04

Cited by 3 publications

(3 citation statements)

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“…Investigations on oil shale combustion in CFB test devices [3] confirmed high capture of sulphur in fluidized bed. Due to that, there is no noticeable sulphating processes after the cyclone.…”

Section: Introductionmentioning

confidence: 86%

On the Fouling Mechanism of Non-Bounded Oil Shale Ash Deposits on Boiler Heat-Transfer Surfaces

Ots¹,

Tiikma²

2003

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As shown by preliminary pilot-scale experiments on oil shale combustion in circulating fluidized bed, deposition of very fine particles in the convective part of boiler takes place. Assuming a quite complete binding of sulphur in CFB combustor and taking into account low-temperature level of this combustion process, there will not be adequate conditions for formation of bounded deposits on convective boiler surfaces and the fouling process will be controlled mainly by thermophoretic, diffusion and adhesion forces. That might invoke a forced increase in deposits with high thermal resistance. The prognosis of that process is presented in the given paper.

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Section: Introductionmentioning

confidence: 86%

On the Fouling Mechanism of Non-Bounded Oil Shale Ash Deposits on Boiler Heat-Transfer Surfaces

Ots¹,

Tiikma²

2003

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“…This favors the reaction between sulfur dioxide and fly ash particles which have larger active surface area. Higher sulfur content of smaller ash particles can also be influenced by separation of larger particles with lower sulfur content from the ash flow in the boiler gas passes [26]. Grinding Rate of Fuel.…”

Section: Binding Of Sulfur Oxides With Ash In Industrial Oil Shale Bo...mentioning

confidence: 99%

“…Arro and coworkers have discussed the great influence of contact time between the particles and surrounding atmosphere on the extent of sulfation [26]. The extents of sulfation of ash samples taken from a circulating fluidized bed combustor 3 SO k are as follows: for fly ash 0.08-0.09, for intermediate ash 0.12-0.13, for circulating ash 0.16-0.22 and for bottom ash 0.13-0.15.…”

Section: Circulating Fluidized Bed Combustionmentioning

confidence: 99%

Formation and Emission of Compounds Affecting Environment

Ots¹

2005

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This paper gives an overview of the formation of nitrogen oxides, sulfur oxides, carbon monoxide, carbon dioxide and other harmful components emitted by oil shale-fired plants. Formation of these compounds and their concentration in flue gas are determined mainly by the properties of fuel and combustion technology. Some information is given on oil shale pulverized firing and combustion in circulating fluidized bed.

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Characterization and preparation of biomass, oil shale and coal-based feedstocks

Trass

2011

Advances in Clean Hydrocarbon Fuel Processing

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Sulfur Binding by Ash in Oil Shale Boilers

Abstract: Earlier research papers and reports dealing with sulfur binding by ash in oil shale boilers have been re-examined with the aim to learn to what extent these results enable to estimate sulfur binding dynamics in gas passes of oil shale boilers.

Cited by 3 publications

References 0 publications

On the Fouling Mechanism of Non-Bounded Oil Shale Ash Deposits on Boiler Heat-Transfer Surfaces

On the Fouling Mechanism of Non-Bounded Oil Shale Ash Deposits on Boiler Heat-Transfer Surfaces

Formation and Emission of Compounds Affecting Environment

Characterization and preparation of biomass, oil shale and coal-based feedstocks

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