METHOD OF DETERMINATION OF CONTENT OF VARIOUS FORMS OF WATER IN FUEL Russian patent published in 1996 - IPC

FIELD: petroleum refining industry. SUBSTANCE: invention is meant for determination of degree of oxidation of oil products and mass concentration of water dissolved in them. After injection of additives into hydrocarbon liquid sample of it is cooled to negative temperature, is filtered and mass concentration of water solubilized with surface-active substances is determined. Before determination of mass concentration of water solubilized with oxidation products total mass concentration of water dissolved in hydrocarbon liquid is found. Total mass concentration of water solubilized with surface-active substances and oxidation products is determined after removal of molecularly dissolved water. After this mass concentration of water solubilized with oxidation products is calculated by formula , where is mass concentration of water solubilized with oxidation products; is mass concentration of water solubilized with surface-active substances and oxidation products; is mass concentration of water solubilized with surface-active substances. After determination of degree of oxidation of oil product mass concentration of water molecularly dissolved in hydrocarbon liquid is calculated by formula , where is mass concentration of water dissolved molecularly; is total mass concentration of dissolved water. EFFECT: enhanced authenticity of method.