World Oil Recycling acquired Demenno-Kardoon and aimed to build a new waste oil processing plant to remove sulfur and produce Group II and III oils.<br> <br>Seneca’s affiliate, Ultragen, was initially contracted by World Oil Recycling to complete the preliminary engineering phase and obtain the necessary permits to operate a Group II and III oil production plant.<br> <br>To produce these oils, several units were required, including a dehydration unit, a vacuum distillation column to recover light oils, an evaporation unit, and a solvent extraction unit. The solvent extraction unit consisted of two components: one for operating the refined base oils and another for extracting base oils. Our team carried out the detailed engineering and supervised the construction and repair work.<br>