Device and method for recovering fractional hydrocarbons from recycled plastic fractions and/or oily residues

US7847136B2 · kind B2 · utility

Assignee

• Nill-Tech GmbH · DE

Inventors

• Wolf-Eberhard Nill · Stuttgart, DE
• Anton Schmillen · Schrobenhausen, DE

Key dates

• Filing date: Jan 24, 2005
• Grant date: Dec 7, 2010
• Expiry date: Jan 30, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G1/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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. Thereafter the second gas phase from the evaporation tank (20) and the third gas phase from the re-heater (23) are conveyed to a cracking tower (27) where further cracking of the long-chained hydrocarbons into short-chained hydrocarbons takes place, and the resulting oil gas is then conveyed to a condenser (30) in which the oil gas is condensed to form liquid oil, wherein the oil constitutes th…