Patent ID: 9080111
Filing Date: 2015-07-14
Classification: C10G

Abstract:
1. A method of in-line addition of a blending stock to a batch of fuel stock flowing through a line to produce a batch of blended product without exceeding an allowable volatility value for said batch of blended product, said method comprising the steps of: (a) determining an arrival of an interface between said batch of fuel stock flowing through said line and a previous batch of material flowing through said line immediately ahead of said batch of fuel stock, said line having an addition point for adding said blending stock and said line having a sampling point for an automated volatility analyzer downstream of said addition point; (b) when said arrival of said interface between said batch of fuel stock and said previous batch of material has been determined in accordance with step (a), initiating an analysis delay interval during which said automated volatility analyzer is prevented from taking samples from said sampling point; (c) terminating said analysis delay interval when said interface between said batch of fuel stock and said previous batch of material has passed said sampling point so that said automated volatility analyzer is activated to automatically monitor an actual volatility value of said batch of fuel stock or said batch of blended product downstream of said addition point by automatically taking and testing samples at said sampling point; and (d) adding at said addition point to said batch of fuel stock flowing through said line said blending stock at a blending stock addition rate which is automatically controlled by comparing said actual volatility value to a target volatility value for said batch of blended product.