FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to the method of thermal oil dewaxing comprising the fraction thermolysis 340-540°C, separated at fractionation of heated oil mixed with the circulating part of the thermolysis residue, separation of the thermolysis product with emission of thermolysis vapour and residue which is separated into circulating and balance parts, cooling of mix of thermolysis vapours and balance part of the thermolysis residue with other obtained oil fractions, its stabilisation with obtaining of gas stabilisation and dewaxed oil.
EFFECT: decrease of mass fraction of paraffin, viscosity and temperature of hardening of oil.
1 dwg
