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Effect of hydrotreating reaction conditions on viscosity, api gravity and specific gravity of maya crude oil

Abstract:

The hydrotreatment of Maya crude oil was carried out in a Parr batch reactor, using alumina-supported catalysts based on NiMo and CoMo sulfides, carbides, and nitrides, which were sulfided ex situ with a mixture of H2 /CS2,priorto reaction. Hydrotreating reactions were carried out under the following conditions: temperature: 320◦C, pressure: 70–80 kg/cm2, time: 4 h, stirring: 500 rpm, and catalyst mass: 2 g. The products of reaction were analyzed by simulated distillation, and the physical properties of the hydrotreated crude were obtained, such as the specific weight and viscosity, at different temperatures, and these values were used to determine specific gravity (SG) and API. In this contribution, we illustrate changes in the physical properties of Maya crude oil before and after hydrotreatment reaction with variations on residue conversion when different hydrotreatment catalysts were used.