Abstract
The purpose of this study is a comparative analysis of droplet burnout rates of coal-water slurries with typical composition (based on coal dust) and new compositions of waste-derived slurries (based on coal flotation waste and used petroleum oil). The main variable parameters included the temperature in the combustion chamber (700–900°С), the initial droplet diameter (0.8–2.2 mm), the particle size (40–250 μm) and the component composition of slurry. We tested the effect of these parameters on three main characteristics: ignition delay time, burnout time, and burnout rate). The dominant impact of petroleum oil on ignition delay times and burnout rates of fuel slurry droplets was found. These parameters can change 2- or 3-fold with the addition of as little as 15–25% of used turbine oil. It was established that the ultra-grinding of coal dust is impractical to increase the burnout rate of a slurry droplet. The burnout rates of fuel slurries based on coal dust and coal processing waste are almost identical under adequate conditions. Also, the burnout rates of a coal-water slurry containing petrochemicals, in contrast to those of coal-water slurry, grow nonlinearly as the droplet size increases. In the conditions under study, the investigated characteristics may change several times. This result shows ample opportunities for adjusting combustion systems to the required conditions and a wide range of slurry compositions.
| Original language | English |
|---|---|
| Pages (from-to) | 204-214 |
| Number of pages | 11 |
| Journal | Powder Technology |
| Volume | 343 |
| DOIs | |
| Publication status | Published - 1 Feb 2019 |
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Keywords
- Burnout rate
- Coal and oil processing waste
- Coal particle size
- Coal-water slurry containing petrochemicals
- Droplet
- Ignition delay
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Burnout rates of fuel slurries containing petrochemicals, coals and coal processing waste. / Vershinina, Ksenia; Shabardin, Dmitrii; Strizhak, Pavel.
In: Powder Technology, Vol. 343, 01.02.2019, p. 204-214.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Burnout rates of fuel slurries containing petrochemicals, coals and coal processing waste
AU - Vershinina, Ksenia
AU - Shabardin, Dmitrii
AU - Strizhak, Pavel
PY - 2019/2/1
Y1 - 2019/2/1
N2 - The purpose of this study is a comparative analysis of droplet burnout rates of coal-water slurries with typical composition (based on coal dust) and new compositions of waste-derived slurries (based on coal flotation waste and used petroleum oil). The main variable parameters included the temperature in the combustion chamber (700–900°С), the initial droplet diameter (0.8–2.2 mm), the particle size (40–250 μm) and the component composition of slurry. We tested the effect of these parameters on three main characteristics: ignition delay time, burnout time, and burnout rate). The dominant impact of petroleum oil on ignition delay times and burnout rates of fuel slurry droplets was found. These parameters can change 2- or 3-fold with the addition of as little as 15–25% of used turbine oil. It was established that the ultra-grinding of coal dust is impractical to increase the burnout rate of a slurry droplet. The burnout rates of fuel slurries based on coal dust and coal processing waste are almost identical under adequate conditions. Also, the burnout rates of a coal-water slurry containing petrochemicals, in contrast to those of coal-water slurry, grow nonlinearly as the droplet size increases. In the conditions under study, the investigated characteristics may change several times. This result shows ample opportunities for adjusting combustion systems to the required conditions and a wide range of slurry compositions.
AB - The purpose of this study is a comparative analysis of droplet burnout rates of coal-water slurries with typical composition (based on coal dust) and new compositions of waste-derived slurries (based on coal flotation waste and used petroleum oil). The main variable parameters included the temperature in the combustion chamber (700–900°С), the initial droplet diameter (0.8–2.2 mm), the particle size (40–250 μm) and the component composition of slurry. We tested the effect of these parameters on three main characteristics: ignition delay time, burnout time, and burnout rate). The dominant impact of petroleum oil on ignition delay times and burnout rates of fuel slurry droplets was found. These parameters can change 2- or 3-fold with the addition of as little as 15–25% of used turbine oil. It was established that the ultra-grinding of coal dust is impractical to increase the burnout rate of a slurry droplet. The burnout rates of fuel slurries based on coal dust and coal processing waste are almost identical under adequate conditions. Also, the burnout rates of a coal-water slurry containing petrochemicals, in contrast to those of coal-water slurry, grow nonlinearly as the droplet size increases. In the conditions under study, the investigated characteristics may change several times. This result shows ample opportunities for adjusting combustion systems to the required conditions and a wide range of slurry compositions.
KW - Burnout rate
KW - Coal and oil processing waste
KW - Coal particle size
KW - Coal-water slurry containing petrochemicals
KW - Droplet
KW - Ignition delay
UR - http://www.scopus.com/inward/record.url?scp=85056658064&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056658064&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2018.11.052
DO - 10.1016/j.powtec.2018.11.052
M3 - Article
VL - 343
SP - 204
EP - 214
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
ER -