Process for the processing of salvaged or waste plastic materials

US5849964A · kind A · utility

Assignee

• Veba Oel AG · DE

Inventors

• Rolf Holighaus · Haltern, DE
• Klaus Niemann · Oberhausen, DE
• Martin Rupp · Edingen-Neckarhausen, DE

Key dates

• Filing date: Dec 27, 1995
• Grant date: Dec 15, 1998
• Expiry date: Dec 27, 2015

Classification

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

Abstract

A process is disclosed for processing used or waste plastic materials in order to recover chemical raw materials and liquid fuel components by depolymerisation of the used materials, which are transformed into a pumpable and into a volatile phase. The volatile phase is separated into a gaseous phase and a condensate or condensable depolymerisation product, which are refined by standard usual procedures. The pumpable phase remaining once the volatile phase is separated is subjected to liquid phase hydrogenation, gasification, low temperature carbonisation or to a combination of said processes.