Abstract
A scheme for the technological processing of oil sludge by separating it using thermal degradation of a high-boiling hydrocarbon fraction boiling off at temperatures above > 360 °C and having a kinematic viscosity corresponding to industrial commodity oils I-50 and I-70 (kinematic viscosity measured at 50 °C, is in the range of 45–70 mm2/s), which can be used as a dispersion medium in the production of greases is proposed. When it is thickened with 2 % of the masses, crushed with polymer waste from low-pressure polyethylene and polypropylene, it is possible to obtain products that correspond to greases in their properties: classification according to NLGI, corresponds to 0 (semi-fluid lubricant) and 1 (soft lubricant); the upper aisle of the range of operating temperatures corresponds to 85 °C and 110 °C; the absence of corrosive effects on the metal (for example, copper); high protective properties (for steel, grade 3). Due to its properties the resulting products can be used as preservation greases designed to protect metal surfaces against atmospheric corrosion.
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