Waste oil refining system was developed as the pre-treatment system for the waste oil recycling system for fuel, EOMIX, and it is used in the case when much sludge is contained in the waste oil and therefore when the filter element for EOMIX must be frequently exchanged due to its clogging.

Waste oil refining system is equipped with a centrifuge with which the sludge contained in waste oil is continuously separated. Using the system, the frequence of the filter element exchange for EOMIX can be remarkably decreased.

Waste oil refining system, ORM is the model which was developed as a popular and cheap one. Only the discharge operation of the accumulated sludge in the bucket type centrifuge should be done manually, but it is very easy.

When the waste oil gathered from various sources is changed to fuel, it contains much sludge generally. In such case, the use of ORM etc. is recommended. Before the ORM treatment, the waste oil should be settled in a conical bottom type tank to separate large solids and water.