METHOD OF CLEANING OIL FUEL FOR DIESEL ENGINE Russian patent published in 2020 - IPC B01D17/02 B01D17/12 C10G31/10 

FIELD: oil and gas industry.

SUBSTANCE: present invention relates to the field of oil fuel cleaning, such as oil fuel purification onboard the vessel. According to the method, said fuel oil to be purified is fed into centrifugal separator (2). Said oil fuel is cleaned in centrifugal separator (2) to produce clean oil phase. Viscosity of petroleum fuel to be cleaned is measured before cleaning in said centrifugal separator (2) or viscosity of clean oil phase. Temperature of petroleum fuel to be cleaned is controlled based on measured viscosity. Temperature control includes temperature change so that viscosity of oil fuel to be cleaned is maintained equal to preset value of viscosity v_set, which is less than specified maximum viscosity of v_max, or lying in some interval of viscosity, less, than specified certain maximum viscosity v_max. Stage of oil fuel temperature control includes comparison of measured value of viscosity with specified value of viscosity v_set and reduction of temperature if measured viscosity is less than v_set, and temperature increase if measured viscosity is more than v_set.

EFFECT: high efficiency of cleaning, which enables separation at high temperature, with reduced wear and damage of parts of the centrifugal separator.

11 cl, 4 dwg