The Influence Of Calcite On The Ash Flow Temperature For Semi-Anthracite Coal From Donbas District

• Authors: Mária Čarnogurská , Miroslav Příhoda , René Pyszko , Ľubomíra Širillová , Ján Palkóci
• Languages of publication: EN

Abstracts

EN

This paper presents the results of research focused on the lowering of ash flow temperature at semianthracite coal from Donbas district by means of additive (calcite) dosing. Ash fusion temperatures were set for two coal samples (A, B) and for five various states (samples of ash without any additives, with 1%, with 3%, with 5% and with 7% of the additive) in total. The macroscopicphotographic method was used for identifying all specific temperatures. Obtained outputs prove that A type coal has a lower value of sphere temperature than B type coal in the whole scope of percentage representation of the additive. The flow temperature dropped in total from 1489 °C to 1280 °C, i.e. by 14% during the test of coal of type A with 7% of the additive; while it was near 10% for coal of type B (from 1450 °C to 1308 °C). Numerical simulations of the process showed that it is not effective to add an additive with a grain size lower than 280 μm by means of wastevapour burners.

Keywords

EN

coal; ash; additive; flow temperature; numerical simulation

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2014
• Volume: 35
• Issue: 4
• Pages: 515-525

Dates

published

1 - 12 - 2014

online

17 - 12 - 2014

revised

21 - 10 - 2014

accepted

27 - 10 - 2014

received

4 - 2 - 2014

Contributors

author

Mária Čarnogurská

• Technical University of Košice, Faculty of Mechanical Engineering, Department of Power Engineering, Vysokoškolská 4, 042 00 Košice, Slovakia

author

Miroslav Příhoda

• VŠB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic

author

René Pyszko

• VŠB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, 708 33 Ostrava-Poruba, Czech Republic

author

Ľubomíra Širillová

• Technical University of Košice, Faculty of Mechanical Engineering, Department of Power Engineering, Vysokoškolská 4, 042 00 Košice, Slovakia

author

Ján Palkóci

• Slovenské elektrárne, subsidiary of the Enel Group, Thermal Power Plant Vojany, 076 72 Vojany, Slovakia

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Identifiers

DOI

10.2478/cpe-2014-0038