A system for refining hydrocarbon containing materials in a continuous coking mode may provide a pyrolyzer which may be inclined to effect a liquid seal between a liquid conduction environment and a gaseous conduction environment. Symbols corresponding to pre-recorded programs contained on a recording medium are displayed on a screen. The invention also relates to a control system for carrying out said method. The stacked structure thus formed is subjected to thermal treatment. From a working node M that is included in the selected path, the next node that is selected for the path is a node N such that a link MN exists, and the link MN forms an angle relative to a line that connects working node with the destination node that is smaller than the angle that any other link from node M forms with the line that connects working node with the destination node.