A hydrocarbon cracker stream is combined with recycle content pyrolysis oil to form a combined cracker stream and the combined cracker stream is cracked in a cracker furnace to provide an olefin-containing effluent. The r-pyoil can be fed to the cracker feed. Alternatively, the r-pyoil with a predominantly c8+ fraction can be fed to the cracker feed. The furnace can be a gas fed furnace, or split cracker furnace.

The catalytic cracking catalyst contains a molecular sieve and an alumina substrate material. The alumina substrate material has a crystalline phase structure of γ-alumina. Based on the volume of pores with a diameter of 2-100 nm, the pore volume of the pores with a diameter of 2-5 nm accounts for 0-10%, the pore volume of the pores with a diameter of more than 5 nm and not more than 10 nm accounts for 10-25%, and the pore volume of the pores with a diameter of more than 10 nm and not more than 100 nm accounts for 65-90%.

The invention relates to a process configuration for production of light olefins and aromatics from residual hydrocarbon streams. In this configuration a high severity catalytic cracking process is employed for producing higher yields of lighter olefins and various boiling fractions. C4 stream separated from gaseous product is subjected to metathesis and aromatized to form mono aromatics.

Disclosed are Group III base stocks comprising at least 30 wt % naphthenes, a viscosity index from 120 to 145; and a unique ratio of molecules with multi-ring naphthenes to single ring naphthenes (2R+N/1RN). A method for preparing the base stocks is also disclosed. Also disclosed is a lubricating oil having the base stock as a major component, and an additive as a minor component.

A method of demulsifying an emulsion with an ionic liquid having a nitrogen or phosphorus cation.

A catalytic conversion process for producing gasoline and propylene includes the steps of 1) subjecting a feedstock oil to a first catalytic conversion reaction in a first catalytic conversion reaction device to obtain a first reaction product; 2) separating the first reaction product to obtain a propylene fraction, a gasoline fraction and a fraction comprising C.sub.4 olefin; 3) carrying out an oligomerization reaction on the fraction comprising C.sub.4 olefin in an oligomerization reactor to obtain an oligomerization product comprising C.sub.12 olefin, and optionally separating the oligomerization product to obtain a fraction comprising C.sub.12 olefin; 4) recycling the C.sub.12 olefin-containing oligomerization product or fraction to the first catalytic conversion reaction device, and/or sending the C.sub.12 olefin-containing oligomerization product or fraction to a second catalytic conversion reaction device for a second catalytic conversion reaction to obtain a second reaction product comprising propylene.

The present invention relates to a process for treating a plastics pyrolysis oil, comprising: a) selective hydrogenation of said feedstock in the presence of at least hydrogen and of at least one selective hydrogenation catalyst; b) hydrotreatment of said hydrogenated effluent in the presence of at least hydrogen and of at least one hydrotreatment catalyst, to obtain a hydrotreated effluent; c) hydrocracking of said hydrotreated effluent in the presence of at least hydrogen and of at least one hydrocracking catalyst, to obtain a hydrocracked effluent; d) separation of the hydrocracked effluent in the presence of an aqueous stream, at a temperature of between 50 and 370° C., to obtain at least one gaseous effluent, an aqueous liquid effluent and a hydrocarbon-based liquid effluent.

The present invention relates to a process for treating an SRF and/or plastics pyrolysis oil, comprising: a) optionally, selective hydrogenation of the feedstock; b) hydroconversion in an ebullated bed, in an entrained bed and/or in a moving bed, to obtain a hydroconverted effluent; c) separation of the hydroconverted effluent in the presence of an aqueous stream, to obtain a gaseous effluent, an aqueous liquid effluent and a liquid hydrocarbon effluent; d) fractionation of the liquid hydrocarbon effluent to obtain at least one gas stream and a cut with a boiling point of less than or equal to 385° C. and a cut with a boiling point above 385° C.; e) hydrotreatment of said cut comprising compounds with a boiling point of less than or equal to 385° C. to obtain a hydrotreated effluent; f) separation to obtain at least a gaseous effluent and a hydrotreated liquid hydrocarbon effluent.

A synthetic fuel production system and related techniques are disclosed. In accordance with some embodiments, the disclosed system may be configured to produce a liquid fuel using carbon dioxide extracted from the air and hydrogen generated from aqueous solutions by electrochemical means (e.g., water electrolysis). In production of the fuel, the disclosed system may be configured, in accordance with some embodiments, to react the carbon dioxide and hydrogen, for example, to form methanol. The disclosed system also may be configured, in accordance with some embodiments, to utilize one or more subsequent reaction steps to produce a given targeted set of hydrocarbons and partially oxidized hydrocarbons. For example, the disclosed system may be used to produce any one (or combination) of: ethanol; dimethyl ether; formic acid; formaldehyde; alkanes of various chain length; olefines; aliphatic and aromatic carbon compounds; and mixtures thereof, such as gasoline fuels, diesel fuels, and jet fuels.

Embodiments disclosed relate to a debutanizer with a dividing wall. The configuration of the debutanizer includes having a feed section, a top section, a bottom section, and a draw-off section. The debutanizer produces a C4s product, a C5s product and a natural gasoline (NG) product from a C4+s feed. The dividing wall is configured such that an upper portion of the dividing wall is positioned off-set from a vertical centerline and a lower portion of the dividing wall is positioned along the vertical centerline of the debutanizer. A process of use of the debutanizer is also disclosed. A natural gas liquids (NGL) system that includes parallel debutanizers, each with a dividing wall, and a process of use of such system, is also disclosed.