The Diesel Fuel Wax Crystallization Mechanism And The Action Mechanism Of Pour Point Depression

This text carries on the analysis to six kinds of main diesel of Xinjiang, measuresing the mainly constitute of diesel and the diesel wax crystal; Using Gas Chromatography-Mass Spectrometry measures the content of the normal alkane hydrocarbon,the saturate hydrocarbon and the aromatic hydrocarbon within the diesel; Measuresed main composition that the diesel wax crystal constitute with the GC- MS; Using the low temperature DSC to measure the concretion process and the calories; Using the low temperature scanning electron microscopy, observe the wax crystal distribution of the setting diesel fuel, which some not add the DFI and some added. Analysing component of the diesel fuel and the effection of pour point depression, get the foundation for the principle of the pour point depression act on the diesel fuel and the synthesis of the diesel fuel pour point depression.In Chapter 2, analys the main component to six kinds of diesel fuels in Xinjiang, make sure the contents of the normal alkane,the saturated hydrocarbon and the aromatic hydrocarbon by GC- MS, and discuss the the main components of diesel fuel; Segregate the normal alkane hydrocarbon,the saturate hydrocarbon and the aromatic hydrocarbon from the diesel, and add into the diesel respectively, elementary realize the diesel fuel freezing process and the influence of each hydrocarbon in the diesel fuel.In Chapter 3, get the solid crystal in the diesel fuel by the solid-liquid separation , analys the components of crystal through GC- MS, find the main components of the wax crystal; Through contrasting the component of the wax crystal and the diesel fuel, further get the process of the wax in the diesel fuel.In Chapter 4, measure the calories in the freezing process of the diesel fuel which add DFI and the diesel fuel which not add; Using the low temperature scanning electron microscopy, observe the wax crystal distribution of the freezing diesel fuel; Discuss the action process and the effect of the DFI; Contrast the components'structure and property of the diesel fuel and the DFI, inllustrate the mechanism of DFI; make conceive to the synthesis of the diesel fuels DFI.