G070034 ジエチルエーテル平坦バーナー低温度炎におけるアセチレン添加の影響
詳細
An experimental study was carried out in order to better understand the mechanism of a polycyclic aromatic hydrocarbons (PAHs) formation in a low temperature ignition. A modified Powling burner at atmospheric pressure was used to stabilize the flat low-temperature flame of a diethyl-ether/acetylene/air (acetylene content in mixute : 500 ppm) at an equivalence ratio of 2.0. Aromatic hydrocarbons and unsaturated aliphatic hydrocarbons measurement are preformed by a liquid- and gas-chromatograph. The temperature profiles in the low-temperature flames were measured with a type K thermocouple of 50 μm in diameter. Light emission spectra (250-900 nm) were recorded with a scanning monochromator. Acetylene addition promotes the low-temperature flame appearance, and strengthens a continuous radiation in a near-infrared light area of the yellow column. Although the amount of detection of single aromatic hydrocarbons and aliphatic hydrocarbons decreases, large molecule PAH increases. These results show the possibility of contributing in the growth of soot of the yellow column by the addition of acetylene.
