Process for gasifying solid carbonaceous fuel

US4017272A · kind A · utility

Assignee

• Bamag Verfahrenstechnik GmbH

Inventors

• Jamil Anwer · Cologne, DE
• Ira Norman Banchik · Lakeland, US
• Gerhard Wilhelm Bode
• Werner Lemberg · Cologne, DE
• Kuldip Kumar Sud

Key dates

• Filing date: May 27, 1976
• Grant date: Apr 12, 1977
• Expiry date: May 27, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S48/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for continuously gasifying carbonaceous material using fluidizing medium and oxygen-containing gas, under controlled feed rates and certain delivery conditions, and under selective processing conditions to produce a product rich in carbon monoxide and hydrogen is provided. If desired, the product can be produced with increased amounts of methane. Gasification is conducted under pressure in a fluidized bed to produce a gaseous reaction product, and char solids are coproduced. Additional increments of oxygen-containing gas with steam is selectively introduced. The product is passed through a dilute-phase, maintained at certain temperatures, at a certain superficial velocity, and for a certain residence time. The presence of undesirable heavy hydrocarbon by-products is precluded. Char, in removal from the bottom of the bed, is contacted with steam or inert gas to recover sensible heat. Cooled product gas is provided having less than about 4 grains of solid per scf at certain conditions. Partially spent char is removed from the product for discharge or certain purposes. The product is cooled and is conducted in a heat recovery zone to recover heat values at least a part of wh…