The Analysis Of The Components In The Fluid Catalytically Cracked (FCC)Gasoline

The hydrocarbons components in the fluid catalytically cracked (FCC)gasoline were detected by gas chromatography—mass spectrometry(GC-MS) and gas chromatography-infrared spectroscopy (GC-IR)。Under the fixed conditions, the FCC gasoline was pretreated with concentrated sulfuric acid and potassium permanganate solutions. GC-MS and GC-IR was performed to qualitative analysis of hydrocarbons and oxygenic components in FCC gasoline. Mass spectra can provides information of molecular mass and fragment ions of components and infrared spectroscopy has advantages over mass Spectrometry on identifying isomers and functional groups The simultaneous using of the tow techniques solve the problems caused by single technique of the both when analyzing the components in a complex mixture. Many techniques such as chemicel reaction, gas chromatography(GC) retention time, standard substance addition and reference method were used to identify the structures of the components obtained by GC-MS and (GC-IR). The hydrocarbon groups were obtained by adding a hydrocarbon with the same type. The oxygenic compound correction factors via hydrocarbons in gasoline were determined. The contents of staturated hydrocarbon, olefin hydrocarbon, alkene, aromatic hydrocarbon (SOA) and benzene, toluene, ethylbenzene, xylene(BTEX) and oxygenic compounds were measured by correcting area normalization method. The relative standard deviation is less than 3.3. The qualitative analysis and quantitative analysis of sulfur compounds in FCC gasoline was carried out using gas chromatography with a pulsed-flame photometric detector(PFPD) and sulfur standard substance.