Abstract:
Sorbent compositions for the removal of sulfur and sulfur compounds, such as hydrogen sulfide, carbonyl sulfide and mercaptans, out of cracked gasoline and diesel fuels are prepared by impregnation of a sorbent support containing zinc oxide, expanded perlite and alumina with a promotor metal, such as nickel and/or cobalt, followed by reduction of the valence of the promotor metal. The use of milled expanded perlite in forming the sorbent support results in a support in which the zinc oxide content and binder content could be adjusted to provide an attrition resistant sorbent and extend the useful life of the sorbent.
Abstract:
This invention relates to a fuel composition comprising a base fuel having a final boiling point above 150 °C and an anti-foam, characterised in that the anti-foam comprises di-isobutylene in an amount greater than 2.5 % by volume based on the total fuel composition. The addition of this anti-foam reduces the break-up time for any foam formed significantly.
Abstract:
A fuel composition comprising gasoline having a sulphur content of less than 10 ppm by weight and an aromatic content of less than 25 % by volume, characterized in that said composition comprises at least 5 % by volume of olefins and is substantially free of any ethers. The fuel composition so formed has reduced emissions and improved fuel economy. The emissions from such compositions can be further reduced by incorporating therein a small amount of ethanol.
Abstract:
The invention concerns a fuel compound for use in hydrocarbon-fuel based internal combustion engines with spark ignition. The compound contains an anti-knock additive in the form of industrial ferrocene, specifically 0.001-0.2 wt.% α-hydroxyisopropyl/ferrocene.
Abstract:
Process for producing gasoline components from a hydrocarbonaceous feed containing hydrocarbons comprising at least 4 carbon atoms, and hydrocarbons obtained thereby. The process comprises:
a) separating feed into a heavy fraction containing hydrocarbons comprising at least 7 carbon atoms and a light fraction containing hydrocarbons comprising at most 7 carbon atoms, b) isomerizing at least part of the light fraction at a temperature between 50 and 300 °C, c) separating effluent of step b) into a stream containing branched hydrocarbons and a stream containing normal hydrocarbons, and d) isomerizing at least part of the stream containing normal hydrocarbons at a temperature which is higher than the temperature applied in step b).
Abstract:
Procédé de production d'essence à faible teneur en benzène et d'indice d'octane élevé caractérisé en ce que :
a - on fractionne un effluent de réformage en une fraction légère enrichie en benzène et une fraction lourde appauvrie en benzène, b - on fait réagir ladite fraction légère avec un gaz de cracking renfermant au moins une mono-oléfine de C₂ à C₅, au contact d'un catalyseur de mordénite désaluminée de rapport atomique Si/Al global supérieur à 20, de façon à obtenir une fraction alkylée, et c - on mélange ladite fraction alkylée avec ladite fraction lourde.