SYSTEM FOR EXTRACTING PRECURSOR ACIDS FROM CALCIUM NAPHTHENATE DEPOSITS AND METHOD

摘要

The present invention is a system for the extraction and quantification of tetraprotic naphthenic acids present in oils, precursors of the formation of calcium naphthenates, which are potential formers of deposits, causing of damage to pieces of equipment used in the oil production industry.

主权项

1- SYSTEM FOR EXTRACTING PRECURSOR ACIDS FROM CALCIUM NAPHTHENATE DEPOSITS AND METHOD, characterized by basically comprising the following steps:
filling the glass column with granulated solids with affinity for aqueous solutions adding buffered calcium ion aqueous solution awaiting X minutes for maximum absorption of the buffered calcium ion aqueous solution by the granulated solids removing the non-absorbed portion of the buffered calcium ion aqueous solution, draining it into a Kitasato flask adding the oil sample to be tested adjusting the flow of percolated liquid in the glass column to 1 drop every 3 seconds percolating an additional volume of solvent equivalent to 15-20 times the mass of solids used on the bed percolating the acid solutionin order todesorb the components present in the oil retained on the water/oil interface percolating dichloromethaneand then the methanol solution in dichloromethane at 5% v/v separating the aqueous and organic phases in a separation funnel setting aside the organic phase evaporating the organic phase solvent in a rotary evaporator until a constant residue mass achieved analyzing and quantifying tetraprotic naphthenic acids in the evaporation residue