Petroleum Asphaltenes - Part 1: Asphaltenes, Resins and the Structure of Petroleum
نویسندگان
چکیده
منابع مشابه
Measuring Asphaltenes and Resins, and Dipole Moment in Petroleum Fluids
A petroleum fluid can be di®ided into three types of species: asphaltenes, resins, and oils. Asphaltenes and resins are polar, while the rest of the so-called oils are either nonpolar or mildly polar. The interaction among these species strongly affect asphaltene precipitation from petroleum fluids. Different measuring methods for asphaltenes in a petroleum fluid gi®e similar results, but diffe...
متن کاملMaltenes and Asphaltenes of Petroleum Vacuum Residues: Physico- Chemical Characterization
Solvent separation is frequently applied to petroleum vacuum residues to reduce the coke-forming tendencies of these materials. This process is capable of removing all or a substantial amount of asphaltenes from feedstocks that are destined for further processing and thus applied as the first step of refining. Maltenes and asphaltenes obtained from vacuum residues of Heera (HVR) and Jodhpur (JV...
متن کاملStructural Characterization of Asphaltenes and Ethyl Acetate Insoluble Fractions of Petroleum Vacuum Residues
Asphaltenes and insoluble fractions of vacuum residues (VRs) of two Indian crude oils (viz. Heera and Jodhpur) of different specific gravity were obtained by precipitation of VRs in n-hexane, n-heptane, and ethyl acetate, and also ' by subsequent reprecipitation of n-heptane and ethyl acetate soluble fractions by n-pentane. The effect of various solvents on average molecular structure of asphal...
متن کاملMicroarray analysis of Neosartorya fischeri using different carbon sources, petroleum asphaltenes and glucose-peptone
Asphaltenes are considered as the most recalcitrant petroleum fraction and represent a big problem for the recovery, separation and processing of heavy oils and bitumens. Neosartorya fischeri is a saprophytic fungus that is able to grow using asphaltenes as the sole carbon source [1]. We performed transcription profiling using a custom designed microarray with the complete genome from N. fische...
متن کاملAdsorption behavior of petroleum asphaltenes dissolved in Toluene by low-cost mineral adsorbents
This paper presents the feasibility of the removal of asphaltenes from aqueous solutions by using low- cost natural adsorbents such as light expanded clay aggregate (LECA), perlite and bentonite. The structure of adsorbents was characterized by XRD, FTIR, and SEM before and after the adsorption of asphaltenes. The effect of the adsorbent type, initial asphaltene concentration, particle size of ...
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ژورنال
عنوان ژورنال: Oil & Gas Science and Technology
سال: 2004
ISSN: 1294-4475
DOI: 10.2516/ogst:2004032