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SEPARATION AND CHARACTERIZATION OF AROMATIC FRACTIONS FROM FCC FEED AND PRODUCTS
Tatjana Tomić
Maja Fabulić Ruszkowski
Sanda Telen
Nada Uzorinac
Nikola Šegudović
Sažetak
Abstract
FCC process is one among major refinery processes, converting heavy gas oils into much more valuable products, such as FCC gasoline. In order to meet stringent environmental requirements prescribed by international specifications, it is necessary to reduce motor fuel – its component being also FCC gasoline - sulphur, aromatics and olefins content.
The origin and type of feed used for catalytic cracking impacts the distribution and volume of aromatic hydrocarbons in generated products.
Chromatographic techniques, such as liquid chromatography and its associated technique of GC/MS, makes it possible to follow the chemistry of generation and transformation of different aromatic compounds out of FCC feed into generated cracking products, such as FCC gasoline and light cyclic oil (LCU).
Out of two FCC feeds obtained from different origin crudes, separated were asphaltenes from maltenes. From the fraction of maltenes separated were fractions of saturated, aromatic and polar hydrocarbons on a semi-preparative column using the method of liquid chromatography. Fraction of aromatic hydrocarbons was separated into mono, di, tri+ aromatics, whose volume was determined by analytical liquid chromatography, and analyzed by its associated system GC/MS, in order to determine their properties as well. Products of catalytic cracking obtained from FCC feeds: FCC gasoline and light cyclic oil, were also analyzed by the said techniques, and the obtained results were compared.
Ključne riječi
Hrčak ID:
6541
URI
Datum izdavanja:
31.7.2006.
Posjeta: 2.082 *