Method for controlling and optimizing the manufacture of gasoline blendstocks for blending with an alcohol as an oxygenate

Patent metadata

Field	Value
Publication number	US-8986402-B2
Application number	US-201213621364-A
Country	US
Kind code	B2
Filing date	Sep 17, 2012
Priority date	Sep 17, 2012
Publication date	Mar 24, 2015
Grant date	Mar 24, 2015

Abstract

A method for manufacturing an oxygenated gasoline-blend by blending a hydrocarbon Basestock for Oxygenate Blending (BOB) with an alcohol such as ethanol to a required octane specification first blends the BOB to an octane number, (RON+MON)/2 based on the octane sensitivity (RON−MON) of the BOB and the proportion of alcohol to be added to the BOB, such that when the BOB is blended with the specification proportion of alcohol to form the oxygenated gasoline blend, this blend will have the required octane specification. The blending of the BOB with the alcohol will typically be done at a location remote from that where the BOB is blended, e.g. at the product distribution terminal after being transported from the refinery by pipeline or tank car.

First claim

The invention claimed is:

1. A method for manufacturing a hydrocarbon Basestock for Oxygenate Blending (BOB) to be blended with an alcohol to a required BOB-alcohol blend octane specification, which comprises:
determining an octane sensitivity (Research Octane Number (RON)−Motor Octane Number (MON)) of a BOB;
determining a relationship between the octane of the BOB and a required octane number of a BOB-alcohol blend, wherein said relationship is based upon the effect of BOB sens…

Assignees

• Exxonmobil Res & Eng Co

Inventors

• Kelly Francis X

Classifications

• C10L2290/58

  Chemistry & Metallurgy · mapped topic

• C10L2290/562

  Chemistry & Metallurgy · mapped topic

• C10L10/10 Primary

  Chemistry & Metallurgy · mapped topic

• C10L2290/24

  Chemistry & Metallurgy · mapped topic

• C10L1/023

  Chemistry & Metallurgy · mapped topic