The petrochemicals industry frequently uses extractive distillation or liquid-liquid extraction technologies to separate a molecule of interest from raw streams of hydrocarbons. Selective solvents, such as nitrogen heterocycles, are frequently used in extraction cycles involving dozen to hundreds of tons. Similarly circuits of thermal or cooling fluids containing hydrogenated hydrocarbons are used in a closed loop. At regular intervals or during its major five-year maintenance shutdowns, Speichim Processing offers customized services to regenerate circuits whose treatment requires impeccable planning. Waste management and the supply of virgin solvents round out this service which Speichim Processing offers all across the European continent.