Nozzle for a fluidized bed firing system

US4526111A · kind A · utility

Assignee

• Deutsche Babcock Aktiengesellschaft · DE

Inventor

• Walter Mischke · Herne, DE

Key dates

• Filing date: May 23, 1983
• Grant date: Jul 2, 1985
• Expiry date: May 23, 2003

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23C10/18
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A nozzle for a fluidized bed firing system in which a pipe for transporting coal/air mixture has an end surrounded by a hood. This pipe extends into the fluidized bed, and an axial exit opening is located between the hood and the pipe. The pipe, moreover, is provided with that axial exit opening, while the hood is spaced from this exit opening. A deflecting face, moreover, is located in a vicinity opposite to the exit opening. A downwardly-pointing baffle is attached underneath a lower edge of the hood, to the pipe so as to be adjustable in height. The deflecting face may be in the form of a cone with a tip pointing towards the exit opening of the pipe. The hood may be provided, furthermore, with a hemispherical cap.