Apparatus for producing ignitable solids-gas suspensions

US4665842A · kind A · utility

Assignee

• Norddeutsche Affinerie Aktiengesellschaft

Inventors

• Adalbert Bartsch · Marxen, DE
• Georg Gospos · Hamburg, DE
• Lars Kersten · Hamburg, DE
• Arno Bartsch · Clausthal-Zellerfeld, DE

Key dates

• Filing date: Oct 4, 1985
• Grant date: May 19, 1987
• Expiry date: Oct 4, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F23/32
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An apparatus for producing ignitable solids-gas suspensions has a feeder for vertically feeding the solids-primary gas suspension, a secondary gas passage concentrically surrounding said feeder, and a stage for mixing both streams. In order to improve the igniting and melting of solids-gas suspensions in such apparatus, the feeder for the solids-primary gas suspension consists of a pressure relief vessel, which is provided with a tangentially extending supply line for supplying the solids-primary gas suspension, which supply line opens into said vessel in a substantially horizontal direction, and in that the pressure relief vessel is succeeded by two series-connected mixing stages which consist of venturi diffusers, the secondary gas passage concentrically surrounds the diffuser in the first mixing stage and the second mixing stage contains a flame-sustaining annular gas burner having fuel gas and oxygen nozzles arranged in alternation and surrounding the diffuser outlet, which is provided with a cooling chamber. The entire burner apparatus is mounted on the top rim of a vertical combustion shaft, which opens into a horizontal melting cyclone chamber.