Method and system for purification of slop oil and industrial emulsions comprising two processes run in parallel

A purification system for purification of slop oil comprising a mixture of oil, water, solid impurities and an emulsion phase of oil and water, and an industrial emulsion comprising an emulsion of water and oil, and configured to handle two processes in parallel, a slop oil purification process and an industrial emulsion purification process, said system comprising:

• a slop oil centrifugal separator (5) into which slop oil is provided for separation of water and oil;
• a slop oil tank (3) and a first fluid connection (7) from the slop oil tank (3) to the slop oil centrifugal separator (5);
• an emulsion centrifugal separator (25) into which an industrial emulsion is provided for separation of oil and water;
• an industrial emulsions tank (23) and a second fluid connection (27) from the industrial emulsions tank (23) to the emulsion centrifugal separator (25);
• and
• a first redirecting fluid connection (37, 37′) arranged for transferring oil separated from the industrial emulsion in the emulsion centrifugal separator (25) to the slop oil centrifugal separator (5).

A purification system for purification of slop oil and an industrial emulsions operated in parallel, wherein the slop oil comprises a mixture of oil, water, solid impurities and an emulsion phase of oil and water and the industrial emulsion comprises an emulsion of water and oil, said system comprising:

• a slop oil tank (3) into which slop oil to be purified is provided;
• a slop oil centrifugal separator (5) into which slop oil is provided for separation of oil and water;
• a first fluid connection (7) coupling the slop oil tank (3) and the slop oil centrifugal separator (5);
• an oil tank (9);
• a second fluid connection (11) coupling the slop oil centrifugal separator (5) and the oil tank (9);
• and emulsion centrifugal separator (25) into which an industrial emulsion is provided for separation of oil and water;
• a first redirecting fluid connection (37, 37′) coupling the emulsion centrifugal separator (25) and the slop oil tank (3);
• an industrial emulsions tank (23);
• a second redirecting fluid connection (39) coupling the slop oil centrifugal separator (5) and the industrial emulsions tank (23);
• a third fluid connection (27) coupling the industrial emulsions tank (23) and the emulsion centrifugal separator (25);
• a water tank (29);
• and
• a fourth fluid connection (31) coupling the emulsion centrifugal separator (25) and the water tank (29).