LOW PRESSURE HYDROGENATION OF HEAVY OIL RESIDUES

摘要

Processing of heavy oil residues with high content of sulphur and heavy metals is of great importance and practical interest. Process of the liquid phase hydrogenolysis of residues obtained from atmospheric or vacuum oil processing using a catalytic additive of the soluble metal (VI-VIII group) salts solution dispersed into the raw material was developed in Russia.The catalytic system is formed in a reaction zone at the contact of the additive with hot hydrogen. The sizes of both catalytical particles and raw materials are approximately equal. This fact provides reliable contacts of the phases and allow to decrease working pressure.The optimal parameters of the process were determined on a pilot plant with output 1 ton/h, duration test was 10-30 days. Different raw materials were used.Hydrogenolysis of tar was realised at 430-450 °C under low pressure <7 MPa at a mass rate of 1-3 h~(-1), and recycling of the process residues 30-50% with use of activating additives. Coke production in the system was not observed.A project of industrial plant with power 0.5-1 mln ton a year including devices for catalytic additive preparation, hydrogenolysis of raw material, demetallation and utilization of the process residues, has been worked out.