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Petroleum residue and heavy coal liquid processing with water-steam in presence of haematite catalyst.

100%

Kuznetsov B. N. , Sharypov V. I. , Beregovtsova N. G. , Baryshnikov S. V.

tom Vol. 9, nr 56

101-106

The processes of water-steam cracking of distillation residue and heavy coal-derived liquids to liquid hydrocarbon fractions in the presence of mechano-chemically activated haematite catalyst were studied at the temperatures 430-520 C and pressure 0.2 MPa.

Polycyclic aromatic hydrocarbons in heavy fuel oil components

67%

Surygała J. , Pieprz A. I.

2006

tom Vol. 8, nr 3

158-160

Heavy fuel oils are blended products based on the residues from various refinery distillation and conversion processes. In refineries with hydrogen process units or lubricating oil rerafination units, the hydroprocessed vacuum residue or the used lubricating oil are fuel oil components. Appreciable concentrations of polycyclic aromatic hydrocarbons (PAH) can be present in heavy fuel oils depending on the type of the components used. The goal of this study was the determination of the selected PAHs which are probably phototoxic or carcinogenic. The following components were put to the test: straight-run vacuum residue, hydroprocessed vacuum residue, vacuum gas oil, two samples of the used lubricating oils and two samples of vacuum distillate of the employed oils. The next PAH concentrations were determined: anthracene, benz(a)antracene, chrysene, benzo(b+k)fluorathene, benzo(a)pyrene, dibenzo(a,h)anthracene, indeno(1,2,3-cd)pyrene, benzo(g,h,i)perylene. The larger amounts of the most phototoxic and carcinogenic PAHs: benzo(a)pyrene and dibenzo(a,h)anthracene were found in the applied lubricating oil components.