| 摘要 |
<p><PICT:0933481/III/1> A gas producer has a fluid cooled grate 14 supporting a charge of lump fuel, and a chamber 17 beneath the grate to collect molten slag falling through the grate. The furnace has a fuel reservoir 28 and a gas off-take 31, and oxygen, air or enriched air passes through the grate from inlets 21 in the chamber 17, which may be heated by recycled gas, or solid or fluid fuel and has a heated outlet 20 to a quench bath 23. Air or oxygen for combustion delivered from a ring 25 in the quench bath is blown, together with entrained steam to the nozzles 21 in the slag chamber 17. The temperature of the bath 23 is kept sufficiently high to produce a steam/air mixture by pipes 34 connected in series with casing cooling tubes 13 and the cooled grate bars 15.</p> |
