【作者】

Chiori Takahashi

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC世界大会上发表，论文的版权归CIMAC所有。 The effect of chemical composition of residual fuels on its ignition and combustion quality was investigated. In order to control the aromatic and paraffin hydrocarbons content, 18 sample fuels with a kinematic viscosity of 380 mm2/s were produced with different proportions of a straight-run light gas oil (LGO), a vacuum gas oil (VGO), a FCC light cycle oil (LCO), a FCC clarified oil (CLO) and a Vacuum Residue (VR). Their ignition, combustion and afterburning characteristics were examined by using Fuel Combustion Analyzer (FCA), and detailed chemical analyses were also conducted by using Thermo Gravimetric Analyzer (TGA) and Gas Chromatography - Mass Spectrometry (GC/MS). Addition of LCO and CLO led a longer FCA Ignition Delay (ID), and it depends on the total amount of LCO and CLO. Though 4 sample fuels, contain none of a straight-run component, exhibited a significant longer FCA ID, their poor ignition property cannot be recognized clearly by Estimated Cetane Number (ECN) and CCAI. The straight-run components, especially LGO, can improve FCA ID. The amount of VR does not affect the combustion property. Good ignition can lead good burning of VR which contains long paraffin hydrocarbons. Based on these results, we operated a 4 stroke 257kW engine by using some fuels with different chemical composition including MGO, HFO and indirect/direct desulfurization products. The indirect/direct desulfurization products might be used for base components of fuels to comply with the Emission Control Areas (ECA) and global sulfur cap. The exhaust gas emissions were measured using by the flue gas O2, CO, CO2, NOx, and SO2 Analyzer, Particulate Matter (PM) measurement method, Thermal Optical Analysis (TOA) and a filter smoke meter. The effect of fuel type on soot concentration was obviously observed. For example, the soot concentration when operating with indirect/direct desulfurization products was very low at higher load, engine in optimum condition, it was lower than that in MGO operation. In contrast, the soot concentration increased significantly at lower load, when engine operating with direct desulfurization product was higher than with HFO. It was supposed to be resulted from fuel injection condition.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

3

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