Method for determining the content of hydrogen sulfide in crude and residual oils
AssigneeClariant Finance (BVI) Limited
InventorsMichael Feustel, Michael Brauchle, Dominko Andrin, Matthias Krull
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Abstract
The subject of the invention is a method for determining the H2S content arising during the warm storage of sulfur-containing crude and residual oils and mineral distillates containing sulfur-containing crude and/or residual oils, in which a sample of the sulfur-containing mineral oil is dissolved in a solvent or solvent mixture that boils at more than 200° C. and a carrier gas is caused to flow through the solution of the sulfur-containing mineral oil at temperatures above 80° C., and the quantity of hydrogen sulfide carried out with the carrier gas is analyzed quantitatively.
Claims26
A process for determining the H2S content which is established in the course of high-temperature storage of a sulfur-containing mineral oil, wherein the sulfur-containing mineral oil is selected from the group consisting of sulfur-containing crude oils and residue oils, and mineral oil distillates comprising sulfur-containing crude oils and/or residue oils, comprising the steps of dissolving a sample of the sulfur-containing mineral oil in a solvent or solvent mixture having a boiling point above 200° C., conducting a carrier gas through the solution of the sulfur-containing mineral oil at a temperature above 80° C. and quantitatively analyzing the amount of hydrogen sulfide discharged with the carrier gas.
A process for determining the concentrations of dissolved hydrogen sulfide and inherent hydrogen sulfide in a sulfur-containing mineral oil, wherein the sulfur-containing mineral oil is selected from the group consisting of sulfur-containing crude oils and residue oils, mineral oil distillates comprising sulfur-containing crude oils and/or residue oils, comprising the steps of dissolving a sample of the sulfur-containing mineral oil in a solvent or solvent mixture having a boiling point above 200° C., firstly determining the dissolved H2S by conducting a carrier gas through the solution of the sulfur-containing mineral oil at a temperature below 100° C. and quantitatively analyzing the amount of hydrogen sulfide discharged with the carrier gas, and then, secondly determining the inherent H2S by heating the sample treated in such a way to a temperature above 80° C. while continuing to purge with carrier gas and quantitatively analyzing the H2S discharged with the carrier gas, wherein the temperature for the determination of the inherent H2S is higher than the temperature for the determination of the dissolved H2S.
The process as claimed in claim 19, in which the carrier gas is air.
Dependencies are inferred from the claim text.