High-Pressure Thermal Decomposition of Tetrahydrotricyclopentadiene (THTCPD) and Binary High-Density Hydrocarbon Fuels of JP-10/THTCPD in a Tubular Flowing Reactor
journal contributionposted on 06.07.2017, 00:00 by Xueke Jia, Baoman Guo, Baitang Jin, Xiangwen Zhang, Kai Jing, Guozhu Liu
High-pressure thermal decomposition of tetrahydrotricyclopentadiene (THTCPD) and binary high-density hydrocarbon fuels of JP-10/THTCPD were investigated at 500–660 °C and 4.0 MPa in an electrically heated tubular reactor. The decomposition of THTCPD under high temperature, high pressure, and low residence time was conducted to analyze their effects on the products. The experimental results of JP-10/THTCPD pyrolysis show that the THTCPD pyrolysis is greatly easier than the thermal cracking of JP-10, and the addition of JP-10 can significantly promote the THTCPD pyrolysis, which is evidenced by the fact that THTCPD conversion increases up to 80% at 660 °C when blended with 50% JP-10. It may be ascribed to possible reason about the pathway and mechanism of JP-10/THTCPD pyrolysis is that the free radicals generated by the decomposition of THTCPD help to promote the decomposition of JP-10 via H-abstraction reactions. Correspondingly, a large number of new free radicals generated from the JP-10 pyrolysis could also react with JP-10 and THTCPD, which is helpful to promote the decomposition of THTCPD via H-abstraction reaction. Besides, the contribution of THTCPD to JP-10 could also explained by the chemical equilibrium point of view, since JP-10 is one of the products of THTCPD. Meanwhile, the thermal isomerization pathways of THTCPD are also slightly changed in the presence of JP-10. Our experiments could provide necessary information for the potential applications of THTCPD fuels in advanced aircraft.