<p>The invention provides a process and system for the depolymerisation of hydrocarbon-containing material for producing diesel oil and/or heating oil comprising a reactor adapted to exceed temperature operation of 390 degrees Celsius and provided with a plant specific exothermal heat source. In a preferred embodiment, raw materials enter the reactor in a liquid or viscous state by pre-heating and introducing it under pressure to the specially adapted reactor where further heating of the raw material takes place under vacuum.</p>
