| 摘要 |
A solid carbonaceous fuel is subjected to partial oxidation to produce a gas comprising carbon monoxide and hydrogen and containing unconverted solid fuel particles which gas is quenched and scrubbed to form a water suspension of such particles. The suspension is passed to a settling zone at elevated temperature and pressure to form an upper clarified water portion and a lower more-concentrated water containing suspension settled solid fuel particles, at least a portion of the lower portion being returned to the partial oxidation zone. The suspension is not cooled on passing to the settling zone and the pressure therein is not less than 5.2 bars. The invention is applicable to gasification of any solid carbonaceous fuel containing ash-forming ingredients, e.g. coal, sub-bituminous coal, lignite, petroleum coke, organic waste. |
