Stability of system against aggregation in coking a compounded feedstock

Journal Article · Tue May 01 00:00:00 EDT 1984 · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

OSTI ID:6785276

Mimun, K; Smidovich, E V; Zaitseva, N P

This article examines a vacuum resid from West Siberian crude and a 250/sup 0/C+ fraction of pyrolysis tar. The pyrolysis tar consists of heavy aromatic hydrocarbons and asphaltenes in approximately equal amounts of 46-48%. The vacuum resid is a conventional straight-run feedstock with a predominance of light and medium aromatic hydrocarbons (37.6%) and a moderate content of asphaltenes (10.2%). The vacuum resid and the pyrolysis tar were subjected to coking in a laboratory still, being coked separately and also in blends with a paraffin wax having a density of 739 kg/m/sup 3/ at 68/sup 0/C, melting point of 54/sup 0/C, and molecular weight of 356. The stability factor was determined for each blend. It is concluded that paraffin wax, like highly aromatic additives, when it is blended with residual stocks with low contents of paraffinic/naphthenic hydrocarbons or none of these hydrocarbons at all (such stocks have a low stability factor), may increase the stability of these residual stocks against phase separation to a significant degree.

• Research Organization: I.M. Gubkin Moscow Inst. of the Petrochemical and Gas Industry
• OSTI ID: 6785276
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Vol. 19:9; Other Information: Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 9, pp. 32-34, September 1983
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
AROMATICS
COKING
PHASE STABILITY
ASPHALTENES
HYDROCARBONS
PETROLEUM RESIDUES
SIBERIA
PETROLEUM
ADDITIVES
AGGLOMERATION
CHEMICAL FEEDSTOCKS
CYCLOALKANES
DENSITY
MELTING POINTS
MIXTURES
MOLECULAR WEIGHT
PARAFFIN
QUANTITY RATIO
ALKANES
ASIA
ASPHALTS
BITUMENS
CARBONIZATION
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
EASTERN EUROPE
ENERGY SOURCES
EUROPE
FOSSIL FUELS
FUELS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM FRACTIONS
PHYSICAL PROPERTIES
STABILITY
TAR
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
USSR
WAXES
020400* - Petroleum- Processing