GTL灯油の灯芯燃焼における火炎特性

摘要

Characteristics of GTL (gas to liquid) kerosene laminar diffusion flame were investigated experimentally. To clarify the flame characteristics of the GTL kerosene, conventional kerosene, aromatics addition GTL kerosene, naphthene addition GTL kerosene and nparaffin kerosene were also used. Each fuel was burnt using a wick combustion burner. Flame length, fuel consumption rate and flame temperature of each flame were measured. In the case of GTL kerosene, soot release to surroundings was not observed. Thus, flame length of the GTL kerosene flame was shorter than other flames. Compared to conventional kerosene, the GTL kerosene indicated smaller fuel consumption rate and higher flame temperature. Obtained results suggested that the flame characteristics were greatly influenced by soot formation characteristics within the flame. To investigate the concentration distributions of polycyclic aromatic hydrocarbons (PAH) regarded as the soot precursor and soot particles, laser-induced fluorescence from PAH and Mie scattering from soot particles were measured. Distribution of PAH fluorescence was significantly differed from GTL kerosene and conventional kerosene, and PAH fluorescence and Mie scattering intensities of GTL kerosene were much lower than conventional kerosene.%室内環境改善の観点から，家庭用暖房機器や給湯器等の民 生用燃焼機器の一層の排気ガスクリーン化が要求されている。 民生用燃焼機器は小型で可搬性を有するものが多く，後処理 装置等の設置が困難であるため，燃焼技術の改善により排気 ガスのクリーン化を図る必要がある。