Abstract: A conveying and lock system (10) for introducing a bulk material into a reactor (14) with exclusion of gas and while preventing gas exchange at low pressure differences has a screw shaft (44) on which first windings (46) and second windings (48) are formed. A winding-free section (50) is disposed between the first and the second windings (46, 48) in which the conveyed bulk material is compacted. The compacting causes a bulk material plug which is substantially gas free and, during bulk material transport, the bulk material plug is constantly formed in the conveying and lock system (10) by the screw shaft (44) to prevent gas exchange between the product inlet and the product outlet of the conveying and lock system.

Abstract: Fractional hydrocarbons are recovered from reclaimed plastic materials and/or from oily residues. The reclaimed plastic materials and/or residues are sorted according to type and compacted using a feed system (1,2,3,4) in the absence of air. Thereafter the compacted mass is fed to a melting tank (7) below the liquid level. There the compacted mass is heated, so that a separation occurs into a first liquid phase, a first gas phase and a residue fraction. Thereafter the liquid phase and the first gas phase are transported into an evaporation tank (20) in which a second liquid phase and a second gas phase are formed under continued heat input. The second liquid phase is transferred to a re-heater (23) and is additionally heated there under further heat input so that a third gas phase is formed.