DIESEL ADDITIVE FOR IMPROVING CETANE, LUBRICITY AND STABILITY

• Main Authors: BRUCE RANDALL COOK, PAUL JOSEPH BERLOWITZ, ROBERT JAY WITTENBRINK
• Format: Patent
• Language: English
• Published: 30.06.2004
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; ORGANIC CHEMISTRY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

A PROCESS FOR PRODUCING ADDITIVE COMPOSITIONS, ESPECIALLY VIA A FISCHER-TROPSCH REACTION, USEFUL FOR IMPROVING THE CETANE NUMBER OR LUBRICITY, OR BOTH THE CETANE NUMBER AND LUBRICITY, OF A MID-DISTILLATE, DIESEL FUEL. IN PRODUCING THE ADDITIVE, THE PRODUCT OF A FISCHER-TROPSCH REACTION IS SEPARATED INTO A HIGH BOILING FRACTION AND A LOW BOILING, E.G., A 371 °C- (700°F-) FRACTION. THE HIGH BOILING FRACTION IS HYDRO ISOMERIZED AT CONDITIONS SUFFICIENT TO CONVERT IT TO A 371 °C- (700°F-) LOW BOILING FRACTION, THE LATTER BEING BLENDED WITH THE 371 °C- (700°F-) FRACTION AND THE DIESEL ADDITIVE IS RECOVERED THEREFROM. (FIGURE 1)