Method and plant for thermal waste disposal

US4878440A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Herbert Tratz · Ottensoos, DE
• Klaus Riedle · Uttenreuth, DE
• Georg Loesel · Uttenreuth, DE

Key dates

• Filing date: May 31, 1988
• Grant date: Nov 7, 1989
• Expiry date: May 31, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A plant for thermal waste disposal includes a pyrolysis reactor converting waste into carbonization gas and substantially non-volatile pyrolysis residue and a discharge device connected to the pyrolysis reactor. A combustion chamber operated with an oxygen excess is connected to a carbonization gas discharge fitting of the discharge device for receiving the carbonization gas. A residue sorting device is connected to the pyrolysis residue outlet of the discharge device for sorting out coarser coarse components substantially including non-combustible ingredients such as rocks, glass shards, broken porcelain, and metal parts, from combustible finer coarse components. A transport device connected to the residue sorting device transports the finer coarse components. A grinding apparatus has an inlet side connected to the transport device and a discharge side for feeding the finer coarse components to the combustion chamber after grinding. The combustion chamber maintains combustion gases produced from delivered combustible material for a sufficiently long time at a sufficient temperature level to produce molten slag. The combustion chamber has an outlet for removing the molten slag whic…