Pyrolysis of hydrocarbon fuel ZH-100 under different pressures

Wang, Ze; Guo, Yongsheng; Lin, Ruisen

doi:10.1016/j.jaap.2009.01.009

Cited by 41 publications

(12 citation statements)

References 7 publications

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“…A wide spectrum of pyrolysis conditions is covered in studies of the open literature (fluid nature, conditions of temperature/pressure/residence time, open/close reactors, dilution ratio, experimental/numerical work,…) [8]- [13]. A deep review is notably available in [14].…”

Section: Introductionmentioning

confidence: 99%

Synthetic and jet fuels pyrolysis for cooling and combustion applications

Gascoin

Abraham

Gillard

2010

Journal of Analytical and Applied Pyrolysis

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Large heat load are encountered in hypersonic flight applications due to the high vehicle speed (over Mach 5, i.e. 5000 km.h-1) and to the combustion heat release. If passive and ablative protections are a way to ensure the thermal management, the regenerative cooling is probably the most efficient one to enable the structures withstanding (notably for reusable structures). The present study is a part of COMPARER project (COntrol and Measure of PArameters in a REacting stReam) which aims at investigating the highly coupled phenomenon (heat and mass transfers, pyrolysis, combustion) in a cooling channel surrounding a SCRamjet combustion chamber and at proposing some parameters to enable the control of such a complex technology. In this paper, we present the comparative numerical pyrolysis study of some selected synthetic and jet fuels (heptane, decane, dodecane, kerosene surrogate). The fluid pyrolysis has been studied experimentally and the results of RESPIRE numerical simulation under lab and in-flight conditions are given with validation to provide a deep understanding of phenomenon. The impact of the density, of the critical parameters, of the viscosity and of the chemistry is investigated to analyze their effect on the cooling efficiency of the engine. That also enables to estimate which properties the best cooling fuel should have. Furthermore, a combustion study is conducted because the cooling fuel is the one that ensure the thrust. The RESPIRE code enables to conduct both coupled pyrolysis and combustion studies. A first approach of the dynamic regeneratively cooled SCRamjet is provided to get a large vision of the fuel nature impact on the system.

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Section: Introductionmentioning

confidence: 99%

Synthetic and jet fuels pyrolysis for cooling and combustion applications

Gascoin

Abraham

Gillard

2010

Journal of Analytical and Applied Pyrolysis

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“…For bi-substituted cyclohexanes, the more close the distance between the bi-substituents, the higher the gaseous product yield is. However, opposite result on the selectivity to hydrogen and olefins (≤C 4 ) is generally obtained except 1,3-dimethylcyclohexane (1,. The position of tri-substituents acts little significance on the gaseous product yield, as well as the selectivity to hydrogen and olefins (≤C 4 ).…”

Section: Discussionmentioning

confidence: 98%

Theoretic heat sink simulation and experimental investigation of the pyrolysis of substituted cyclohexanes

Sun

et al. 2015

Journal of Energy Chemistry

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“…This program contains heat and mass transport, flow mechanism, and detailed pyrolysis mechanism. Wang et al 29 investigated the cracking characteristics of their self-developed hydrocarbon fuel ZH-100 in a tube reactor under different pressures (0.1, 1.5, 2, and 2.5 MPa). Jiang et al 30 investigated the thermal cracking characteristics of several model species (n-octane, n-decane, n-dodecane, China No.…”

Section: Thermal and Catalytic Crackingmentioning

confidence: 99%

Research status of active cooling of endothermic hydrocarbon fueled scramjet engine

Ning

Pan

Zhang

2012

Proceedings of the Institution of Mechanical Engineers, Part G:

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The active cooling with endothermic hydrocarbon fuel is proved to be a very effective approach for scramjet thermal protection. This article has summarized the research status of active cooling of endothermic hydrocarbon fueled scramjet engine from the following five aspects, cooling capacity and heat sink measurement, thermal and catalytic cracking, coking suppression, heat transfer characteristics, and injection, mixing, ignition, and combustion performance, and suggestions on the further study of active cooling of endothermic hydrocarbon fueled scramjets are put forward. The total heat sink of endothermic hydrocarbon fuel is found to be sufficient for scramjet cooling as the additional chemical heat sink is generated from cracking reactions, and catalytic cracking is proved to be better, because of its low cracking starting temperature, high conversion percentage, and good selectivity. As for coking mitigation, approaches are usually made from eliminating the oxygen dissolved in the fuel, reducing the amount of coking-foregoing substances, and doing some special treatments on the metal surface. The heat transfer of endothermic hydrocarbon fuels presents two enhancements. The first one is related to the variation of parameters near the critical point while the second one is a result of cracking reactions. The cracked products are proved to have better performance of injection, mixing, ignition, and combustion, and this is especially attractive for scramjets as effective mixing and stable ignition and combustion has always been difficult.

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Pyrolysis of hydrocarbon fuel ZH-100 under different pressures

Cited by 41 publications

References 7 publications

Synthetic and jet fuels pyrolysis for cooling and combustion applications

Synthetic and jet fuels pyrolysis for cooling and combustion applications

Theoretic heat sink simulation and experimental investigation of the pyrolysis of substituted cyclohexanes

Research status of active cooling of endothermic hydrocarbon fueled scramjet engine

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