An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures,including NH3,C3H8 and C2H4.The study provided the high speed video images and data about...An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures,including NH3,C3H8 and C2H4.The study provided the high speed video images and data about the flame locations,propagation patterns,overpressures and the quenching diameters during the course of combustion in different channels to elucidate the dynamics of various combustion processes.The onset decomposition temperature was determined using high-performance adiabatic calorimetry.It was shown that the order of the flame acceleration rate and thermal hazard was N2O/C2H4>N2O/C3H8>N2O/NH3.展开更多
The development of heat recovery methods for dry granulation processes from blast furnace slag in the iron and steel industry is limited because of the high consumption of granulation energy during these processes.To ...The development of heat recovery methods for dry granulation processes from blast furnace slag in the iron and steel industry is limited because of the high consumption of granulation energy during these processes.To determine the factors that influence the diameter of granulated particles,a paraffin test platform for gas quenching granulation was established.The influences of air velocity,air flow rate,liquid mass flow rate,and liquid pipe diameter on the final particle size and mass distribution were studied.Experimental results showed that the final particle size decreased(from 1.07 mm to 0.81 mm) with increasing air velocity(from 28.3 m/s to 113.2 m/s).However,when air velocity was higher than 60 m/s,its influence on particle diameter decreased significantly.The experimental data were analyzed using SPSS Statistics software,which indicated that the effect of air velocity on particle diameter was the most significant,followed by those of air flow and liquid pipe diameter.The effect of liquid mass flow was the least significant.展开更多
基金This research was supported by Open Research Fund Program of Science and Technology on Aerospace Chemical Power Laboratory(STACPLXXXXXXXX).
文摘An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures,including NH3,C3H8 and C2H4.The study provided the high speed video images and data about the flame locations,propagation patterns,overpressures and the quenching diameters during the course of combustion in different channels to elucidate the dynamics of various combustion processes.The onset decomposition temperature was determined using high-performance adiabatic calorimetry.It was shown that the order of the flame acceleration rate and thermal hazard was N2O/C2H4>N2O/C3H8>N2O/NH3.
基金supported by the National Natural Science Foundation of China(Grant No.51206010)the National Basic Research Program of China(973 Program)(Grant No.2012CB720406)
文摘The development of heat recovery methods for dry granulation processes from blast furnace slag in the iron and steel industry is limited because of the high consumption of granulation energy during these processes.To determine the factors that influence the diameter of granulated particles,a paraffin test platform for gas quenching granulation was established.The influences of air velocity,air flow rate,liquid mass flow rate,and liquid pipe diameter on the final particle size and mass distribution were studied.Experimental results showed that the final particle size decreased(from 1.07 mm to 0.81 mm) with increasing air velocity(from 28.3 m/s to 113.2 m/s).However,when air velocity was higher than 60 m/s,its influence on particle diameter decreased significantly.The experimental data were analyzed using SPSS Statistics software,which indicated that the effect of air velocity on particle diameter was the most significant,followed by those of air flow and liquid pipe diameter.The effect of liquid mass flow was the least significant.
