FIELD: petroleum processing.
SUBSTANCE: invention relates to processes of dehydration of watered petroleum products, which are formed during preparation for repairs or for change of loads in oil-loading and oil-transportation equipment. Petroleum product is preliminarily heated to temperature above water boiling temperature and applied by thin layer onto mobile surface moving it forcibly. Evaporation is effected using heat which product obtains in superheating step. Removal of product from mobile surface is also effected forcibly, after which product, if necessary, is intensively heated and sent to next evaporation step or product is discharged if its moisture content does not exceed allowed values. Dehydration process is accomplished in one, two, or more cycles, each comprising following steps: superheating, applying product onto mobile surface, spreading product across mobile surface in thin layer, and forcibly removing product from the surface. Distilled off vapors are condensed, condensate is collected and processed by a known way, while non-condensed vapors are heated and returned to distillation zone.
EFFECT: enabled dehydration of high-viscosity petroleum products (mazut, bitumen) with any initial moisture while preventing solidification thereof and "arching" during processing, which is thereby shortened as compared to conventional procedures.
5 cl, 1 dwg
