| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: method for processing of heavy charge involves the stages as follows: of heavy charge (1b) at least partially at least bulk flow containing alphaltenes prepared in the deasphalting plant, or at least bulk flow containing alphaltenes with the appropriate hydrogenation catalyst, and supplying of the prepared mixture to the hydrotreating (HT) reactor with hydrogen or mixed hydrogen and H2S loaded thereto; supplying of the flow containing hydrotreating product and the catalyst in dispersed phase to one or more distillation (D) or flash evaporation stages, thereby various fractions resulted from hydrotreating are separated; at least partial recycling of stillage bottom (goudron) or liquid delivered from the flash evaporation unit, containing the catalyst in dispersed phase enriched by metal sulphides resulted from charge demetallation, and possibly, coke with solvents added to the deasphalting module (DAM) whereto heavy charge (1a) is supplied at least partially to make two flows one consisting of deasphalted oil (DAO) and another containing alphaltenes; the flow portion containing alphaltenes is removed from the deasphalting module (DAM) and called a flushing flow is delivered to the processing module with using appropriate solvent to divide the product into solid fraction and liquid fraction with the specified solvent to be removed therefrom. ^ EFFECT: method enhancement, cost reduction. ^ 36 cl, 6 ex, 8 tbl, 1 dwg |
