Method of operating a combustion unit of a coal-fired power plant with a slag tap furnace and combustion plant operating according to the method

US6067914A · kind A · utility

Assignees

• Siemens Aktiengesellschaft · DE
• STEAG GmbH · DE

Inventors

• Erich Hums · Prüm, DE
• Horst Spielmann · Baiersdorf, DE
• Ralf Gilgen · Velbert, DE

Key dates

• Filing date: Mar 18, 1998
• Grant date: May 30, 2000
• Expiry date: Mar 18, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S44/905
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method of operating a combustion unit of a coal-fired power plant operating according to a slag tap furnace firing method, which includes supplying a titanium-containing material in addition to coal to a melting chamber for accelerating coal burn-up, burning the titanium-containing material together with the coal in the melting chamber at a temperature above 1500.degree. C., and generating fly ash and molten ash as a result of combustion in the melting chamber. Additionally, a combustion unit for a coal-fired power plant, including a melting chamber that has a combustion zone for receiving coal. The combustion zone produces fly ash. The combustion unit also includes a separate feed line for supplying a titanium-containing material to the combustion zone for accelerating burn-up of the coal and a second separate feed line first to supply a titanium-containing material to the fly ash and then supply the titanium-containing material and fly ash combination to the combustion zone for accelerating burn-up of the coal and fly ash.