Patent · US Expired

Method and apparatus for gasifying solid carbonaceous material

US6117199A · kind A · utility

6Cited by

14References

13Claims

0Family size

Assignee

FOSTER WHEELER ENERGIA OY · FI

Inventor

Seppo Ruottu · Karhula, FI

Key dates

Filing date	Sep 3, 1993
Grant date	Sep 12, 2000
Priority date	—
Expiry date	Sep 3, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10J2300/1884
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Method and apparatus for gasifying of a solid carbonaceous material in a fluidized bed reactor in which the solid particles entrained by the gases being removed from the upper part of the reactor are separated and returned to the lower part of the reactor. oxygenous gas is supplied into the lower part of the reactor and the non-reacted carbonaceous material separated from the gases is oxidized in the lower part of the reactor. The carbonaceous material is introduced above the oxidizing zone into a zone substantially free of oxygen and the carbonaceous material is pyrolyzed and reduced by means of the hot gases and particles rising from the lower part of the reactor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.