Process and device for regulating the air demand of extractive merox units
AssigneeTotal Raffinage Marketing
InventorsChristophe Hein, Alain Houlier
Life of this patent
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Abstract
Process and device for measuring the conversion of mercaptans to disulfides, in which the progress of the reaction for producing disulfides is monitored by measuring the redox potential.
Claims17
A method for tracking the conversion of mercaptans into disulfides, in which a hydrocarbon load containing mercaptans is brought into contact with a basic aqueous solvent to produce a mercaptan-depleted hydrocarbon fraction and a mercaptan-enriched aqueous phase, said mercaptan-enriched aqueous phase being separated and brought into contact with a gas containing oxygen to produce insoluble disulfides and a regenerated basic aqueous solvent, characterized in that the progress of the insoluble disulfide-producing reaction is monitored by measuring redox potential.
A unit for converting mercaptans into disulfides, comprising a first chamber configured to receive and bring into contact a hydrocarbon load containing mercaptans and a basic aqueous solvent to produce a mercaptan-depleted hydrocarbon fraction and a mercaptan-enriched aqueous phase, a second chamber configured to receive and bring into contact said separated mercaptan-enriched aqueous phase and an oxidant to produce insoluble disulfides and a regenerated basic aqueous solvent, characterized in that it comprises means for measuring redox potential.
A device for sampling and measuring the redox potential of a corrosive solution comprising a tank equipped with a potential-measuring probe, a duct intended to feed the tank with corrosive solution, a duct intended to feed the tank with water, a drain for the tank, characterized in that it comprises at least one means for isolating the duct intended to feed corrosive solution and at least one means for isolating the duct intended to feed water.
Dependencies are inferred from the claim text.