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The effect of composition of condensed fractions' mixtures of a venezuelan residue on the delayed coking products quality

Abstract:

The effect of the composition of resin and asphaltene on the quality of delayed coking prod-ucts was evaluated. 10 mixtures with a controlled composition of S.A.R.A. (Saturates, Aromatic, Resin, Asphaltene) fractions with high percentage of resin and asphaltene, obtained from a vacuum residue of Venezuelan crude commercially known as "Merey", were processed in a laboratory scale delayed coking unit. The physic-chemical characteristics of the mix-tures and products (distilled and coke) were obtained. Results indicate that on increasing the resin and as-phaltene content, there is a decrease in volatile mate-rial content and an fixed carbon and ash increase. Metal and sulphur content was lower in coke from resin' rich mixtures while it was higher in asphaltene' rich mixtures. This showed the impact that the S.A.R. A composition of the feed has on the products quality.