Patent ID: 7228250
Filing Date: 2007-06-05
Classification: G06Q

Abstract:
1. A method for monitoring the overall sulfur content of ultra low sulfur diesel having a maximum sulfur content equal to or less than 15 parts per million and for ensuring that the sulfur content remains at or below a predetermined specification during movement of the fuel through a petroleum transport, terminal and retail system comprising the steps of: transporting the ultra low sulfur diesel as a batch through a pipeline and having a second batch of different fuel with a higher sulfur content at its head-end interface and a third batch of different fuel with a higher sulfur content at its tail-end interface, wherein a first batch cut is made after the last indication of gravity chance at the head-end and second batch cut is made at the first indication of gravity chance at the tail-end, thus preserving the sulfur content integrity of the ultra low sulfur diesel; wherein the volume of the second fuel located at the head-end interface between the first indication of gravity change and the last indication of gravity change at the head-end is defined as the head-end interface volume and if the second fuel consists of a high sulfur fuel having a sulfur content greater than or equal to 500 parts per million, then the first batch cut is made at an interface volume greater than the head-end interface volume.