Process for producing high-octane, low-olefin motor fuels and motor fuel components

US5141525A · kind A · utility

Assignee

• EC Erdolchemie GmbH · DE

Inventors

• Arnd Stuwe · Leverkusen, DE
• Herbert Tschorn · Dormagen, DE
• Hans-Volker Scheef · Dormagen, DE
• Jorg Michel · Schwarzenbach am Wald, DE

Key dates

• Filing date: Apr 18, 1991
• Grant date: Aug 25, 1992
• Expiry date: Apr 18, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L1/023
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

High-octane, low-olefin motor fuels and motor fuel components having a content of alkyl tert.-alkyl ethers can be produced by reacting a crude hydrocarbon stream, which contains tertiary C.sub.5 -C.sub.8 -olefins in addition to saturated and olefinically, diolefinically and acetylenically unsaturated hydrocarbons in the same boiling range, simultaneously with one or more C.sub.1 -C.sub.4 -alkanols in a quantity from 0.5 to 5 mol per mol of the tertiary olefin(s) and with excess hydrogen relative to the total unsaturation under a pressure from 12 to 80 bar and at a temperature from 60.degree. to 180.degree. C. on a catalyst known per se or a mixture of catalysts known per se, which effect(s) both the etherification and the olefin hydrogenation.