| 摘要 |
<p>PURPOSE:To increase the efficiency of recovery of sensible heat of coke, by taking out inert gas divided in two types; high-temperature gas being used for recovery of heat in a waste heat boiler and moderate-temperature gas being circulated to a dry quenching machine after it has been utilized for preheating of coal. CONSTITUTION:Red hot coke 2 is fed into a grate type dry quenching machine 1, where it is heat exchanged with low-temperature inert gas, quenched and discharged as cold coke 3. Inert gas passing through an inert gas path in the quenching machine 1 divided into two channels in the direction of the progress of the grate by a partition pannel for sealing 8, it taken out in two types, i.e. high-temperature gas 9, 10 and moderate-temperature gas 11, 12. The high-temperature gas is used for generation of steam in a waste heat boiler 15, cooled and recycled to the quenching machine 1 via a dust remover 16. The moderate- temperature gas is used for drying of coal in a fluid bed coal drier 4, subjected to dust removal in a gas/liquid contact machine 7 and dehumidified for conditioning and cycled for reuse.</p> |
