Cracking of Maltenes of Naphthenic Petroleum in the Presence of WC/NiCr

Cracking of Maltenes of Naphthenic Petroleum in the Presence of WC/NiCr

Crude oil

Additives

Hydrocarbons

Molecular weight

Resins

Oil fields

Petroleum additives

Naphthas

Petroleum chemistry

Condensation reactions

Abstract: Influence of the WC/NiCr additive on the cracking of maltenes of naphthenic crude oil from the Usa oil field has been studied. Maltene cracking was carried out at 450 for 2 h in the isothermal mode. Material balance of cracking, the composition of gaseous products, and the fractional, component, and hydrocarbon compositions of feed maltenes and liquid products of their cracking have been determined. It has been shown that cracking with WC/NiCr gives more gaseous and solid products. In comparison with starting maltenes and the product of their cracking in the absence of the additive, the yield of IBP360 distillate fractions increases by factors of 1.6 and 1.4, respectively. It has been found that cracking reactions lead to degradation of resinous components to give low-molecular-weight resins and light hydrocarbons and parallel condensation reactions promote the formation of asphaltenes and solid products. It has been shown that the additive WC/NiCr has cracking properties, as indicated by significant differences in fractional and hydrocarbon compositions of liquid products, and by the fact that the amount of 2 and 12 hydrocarbon gases in the products of cracking is much higher in the presence than in the absence of WC/NiCr. This difference can be due to degradation of not only resins, but also high-molecular-weight naphthenoaromatic hydrocarbons. 2020, Pleiades Publishing, Ltd.

373-379

3

60

Petroleum Chemistry

2020

Pevneva, G.S.

Voronetskaya, N.G.

Sviridenko, N.N.

journalArticle

9655441

10.1134/S0965544120030160