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101 1 _aeng
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181 0 _ai
182 0 _ab
200 1 _aThe ignition parameters of the coal-water slurry droplets at the different methods of injection into the hot oxidant flow
_fK. Yu. Vershinina, R. I. Egorov, P. A. Strizhak
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 51 tit.]
330 _aTwo different experimental approaches were realized for investigations of integral characteristics of single droplet ignition of coal-water slurry containing petrochemicals (CWSP) inside the hot flow of the gas oxidant. At first, the droplet was fixed inside the flow by special holder and the second way is free injection of the soaring droplet into the volume of combustion chamber. Research reports an experimental estimation of influence of material holder on ignition characteristics for typical CWSP. This is important, since many researchers use various holders (the ceramic rod, thermocouple junction, metal wire) when inserting droplets of coal-water slurry (CWS) and CWSP into the combustion chamber. There were three types of the droplet holders: the junction of the high-speed thermocouple, metallic wire and the ceramic rod. The basic components of the CWSP were filter-cake (the coal processing waste), the used turbine oil, the plasticizer (wetting agent) and water. Initial droplet radius was 0.5–1 mm, and the temperature and the oxidant flow velocity were 400–1000 K and 0.5–5 m/s correspondingly. The ignition delays and the combustion times for the fuel droplets together with minimal temperatures of the stable ignition (with further combustion) were defined. Comparison of parameters of the flying droplet ignition with corresponding values for droplets that were fixed by holder was done. Soaring droplets have smaller ignition delay times (for 7–25%) relative to the case of droplet fixed inside the oxidant flow by holder (when the all rest parameters are similar). Influence of the holder material onto the values of times of ignition delay and combustion become essentially weaker with oxidant temperature growth. The obtained numerical results show the limitations and advances of the two approaches for laboratory investigations of the CWSP ignition and combustion.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tApplied Thermal Engineering
463 _tVol. 107
_v[P. 10–20]
_d2016
610 1 _aтруды учёных ТПУ
610 1 _aэлектронный ресурс
610 1 _aвоспламенение
610 1 _aводоугольное топливо
610 1 _aкапля
610 1 _aзажигание
610 1 _aотходы
610 1 _aугольная промышленность
700 1 _aVershinina
_bK. Yu.
_cspecialist in the field of heat and power engineering
_claboratory assistant of Tomsk Polytechnic University
_f1992-
_gKseniya Yurievna
_2stltpush
_3(RuTPU)RU\TPU\pers\33706
701 1 _aEgorov
_bR. I.
_cspecialist in the field of heat and power engineering
_cAssociate Scientist of Tomsk Polytechnic University, candidate of physical and mathematical sciences
_f1980-
_gRoman Igorevich
_2stltpush
_3(RuTPU)RU\TPU\pers\36601
701 1 _aStrizhak
_bP. A.
_cSpecialist in the field of heat power energy
_cDoctor of Physical and Mathematical Sciences (DSc), Professor of Tomsk Polytechnic University (TPU)
_f1985-
_gPavel Alexandrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\30871
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bЭнергетический институт (ЭНИН)
_bКафедра автоматизации теплоэнергетических процессов (АТП)
_h121
_2stltpush
_3(RuTPU)RU\TPU\col\18678
801 2 _aRU
_b63413507
_c20170511
_gRCR
856 4 _uhttps://doi.org/10.1016/j.applthermaleng.2016.06.156
942 _cCF