Catalytic Cracking and Heat Sink Capacity of Aviation Kerosene Under Supercritical Conditions

Comparison of thermal and catalytic cracking of 1-heptene from ReaxFF reactive molecular dynamics simulations

“…Sobel and Spadaccini [2] studied catalytic cracking of n-heptane and Norpar 12 fuels over zeolites at temperatures up to 1000 K. These experimental results indicated that catalytic cracking of these fuels provide high cooling rate and excellent product selectivity with excellent combustion characteristics. Fan et al [3] studied the catalytic cracking of China No. 3 aviation kerosene over HZSM-5 zeolite at temperatures up to 1050 K and pressures up to 7.0 MPa.…”

“…Unfortunately, thermal cracking of hydrocarbons offers insufficient heat sink capacity to accommodate the cooling requirements, due to the large amount of methane formed at high temperatures. Conversely, catalytic cracking of hydrocarbons to produce light olefins and hydrogen is highly endothermic [3]. In general, hydrocarbon cracking reactions exhibit complex initiation chemistry and follow a complicated network of reaction pathways, with main products including hydrogen and a wide range of cracked products.…”

“…Recently, several experimental studies have been performed to examine the endothermic properties of aviation fuels with aluminosilicate catalysts under operating conditions simulative of high-speed flight applications (up to 1050 K and 7 MPa) [1][2][3]8,9]. Huang et al [1] performed catalytic cracking of JP-7 and JP-8 using zeolite catalysts at a temperature range of 800-1000 K and measured fuel heat sink, reaction products, and extent of conversion.…”

Combustion of Vaporized Kerosene in Supersonic Model Combustors with Dislocated Dual Cavities

“…Supercritical kerosene at a temperature of 760 10 K and a pressure of 3-6 MPa was prepared in a two-staged kerosene heating and delivering system [26], as shown in Fig. 2.…”

Visualization of Vaporized Kerosene Combustion in a Supersonic Combustor Using Pulsed Schlieren System

“…The luminous density of the spark from the flashlamp is several order of the magnitude higher than the background combustion radiation, and thus, within a very short time of exposure, the integral effect of background radiation could be neglected. The flow visualization experiments were conducted in a Ma 2.5 direct-connect wind tunnel facility 20 , which consists of a vitiated air supply system, a multi-purpose supersonic model combustor, a fuel delivery and heating system. The vitiated air heater, burning with hydrogen, oxygen, and air, was used to supply heated airflow.…”