Hydrocarbon analysis

Details Hydrocarbon analysis Hydrocarbon analysis

G - Physics

01

N

354/21, 73/95

G01N 31/12 (2006.01) G01N 33/28 (2006.01)

Patent

CA 1185811

- 25 - Abstract: Improved hydrocarbon analysis Analysis of hydrocarbon mixtures to determine desired characteristics, particularly a determination of octane number of gasolines, undergoing partial oxidation/cool flame reactions. Pre-analysis performed on a target fuel sample of known composition and octane number is utilized to arrive at an optimum point of the reaction, a point believed to represent a condition where a maxi- mum of the fuel is oxidized during the reaction. In the preferred embodiment disclosed, the optimum point is the reactor block temperature that generates a maximum peak temperature rise of the cool flame reaction of the target fuel. This optimum reactor temperature is utilized in further analyses of other known samples to develop a matrix of peak temperature rise versus time to reach peak coordinates. Any unknown fuel sample whose peak amplitude/time coordinate is within the matrix is compared with matrix values to determine its octane number as well as an indication of its composition.

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