Gasification of fine-grained or sludgy carbonaceous material

US4758248A · kind A · utility

Assignee

• Waagner-Biro A.G. · AT

Inventors

• Bruno Hillinger · Hinterbrühl, AT
• Georg Beckmann · Wien, AT

Key dates

• Filing date: Nov 18, 1986
• Grant date: Jul 19, 1988
• Expiry date: Nov 18, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10J2300/1807
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Method for gasifying carbonaceous fine-grained or sludgy material, such as powdered brown coal or biomass, in fixed bed reactors. Carbonaceous material to be gasified is pre-heated and dried, and mixed with coarse-grained, non-carbonaceous ballast material. This mixing is carried out prior to, during or after the pre-heating and drying of the carbonaceous material, to thereby obtain a pre-heated and dried mixture of the carbonaceous material and the ballast material, and to also obtain vapor from the pre-heating and drying of the same. The heated and dried mixture is contacted with a gasification medium within a fixed bed reactor, at a temperature sufficiently high to gasify the carbonaceous material. The gasification medium includes the vapor from the pre-heating and drying of the carbonaceous material. The ballast material provides sufficient gas permeability to the fine-grained or sludgy carbonaceous material, to permit gasification thereof in the fixed bed reactor.