Kinetics of dissolution of asphalt-resin-paraffin deposits when adding dispersing agents

Abstract

The study is devoted to the determination of kinetic parameters of the process of asphalt-resin-paraffin deposits dissolution by oil fractions, solvents and compositions based on them. The study of the kinetics of deposits dissolution and the effect of additives on this process is relevant, as the use of solvents will reduce the cost of cleaning and repairing process equipment of refineries. A series of experiments was performed to determine the kinetic regularities of dissolution of different types of asphalt-resin-paraffin deposits in petroleum solvents of different fractional composition and the effect of dispersing agents on this process. Crude distilled oil fractions 110–1500С, 150–2000С and 140–2430С were shown to be the most effective for dissolving the asphalt-resin-paraffin deposits. The use of dispersant agents increases the degree of solubility of the components of the asphalt-resin-paraffin deposits. The kinetics of dissolution process obeys the Erofeyev-Kolmogorov equation.