The role of rhodium sulfate on the bond angles of triglyceride molecules and their effect on the combustion characteristics of crude jatropha oil droplets

FUEL

卷:279

Article

Nanlohy, Hendry Y.¹  Wardana, I. N. G.²  Yamaguchi, Masaki^3,4  Ueda, Toshihisa⁵ 

[1] Jayapura Univ Sci & Technol, Dept Mech Engn, Jayapura 99351, Indonesia

[2] Brawijaya Univ, Dept Mech Engn, Malang 65145, East Java, Indonesia

[3] Keio Univ, Sch Sci Open & Environm Syst, Tokyo 1088345, Japan

[4] Teikyo Univ, Join Program Ctr, Tokyo 1088345, Japan

[5] Keio Univ, Dept Mech Engn, Tokyo 1088345, Japan

关键词: Bond angle;    Combustion characteristics;    Crude jatropha oil;    Droplet;    Rhodium sulfate;   

DOI  :  10.1016/j.fuel.2020.118373

来源: Elsevier

【 摘 要 】

The alternative fuels were developed from a blended fuel with crude jatropha oil (CJO) and rhodium sulfate as a homogeneous combustion catalyst. In this study, the performances of blended fuel droplets were investigated experimentally under normal gravity conditions. Combustion characteristics were observed by igniting droplets at the thermocouple junction, and the droplet combustion was observed using a high-speed camera. To this end, understanding how the molecular structure (bonding and angular properties of triglyceride carbon chains) of the fuel affects the combustion characteristics is crucial. The results showed that CJO had 53 rotatable and 111 nonrotatable bonds. This makes CJO more rigid and nonpolar. The interaction of the catalyst with triglycerides changes the molecular chain bond angle so that the atoms get extra space to move, thereby increasing the electron mobility. This makes the fuel molecule more reactive so that the viscosity and flash point are reduced and the fuel is easily ignited. Moreover, the results also showed that the catalyst improved combustion performance, where droplet ignition times were shorter at higher temperatures, and fuel droplets had higher burning rates and combustion temperatures.

【 授权许可】

Free