| 摘要 |
A process for recovering metal from spent catalyst, containing at least a metal component, comprising providing a heated, liquid metal bath, at a temperature sufficient to melt the metal in the spent catalyst, and create off gas from any volatile non-metal catalyst components, adding spent catalyst to the bath, collecting off gas from the bath, transporting the collected off gas to a gas cooler, and maintaining the off gas during the transportation at a temperature of at least about 875 DEG F.; rapidly cooling the off gas to less than about 275 DEG F. in no more than about 0.15 seconds, to prevent the formation of dioxin; and withdrawing melted metal from the bath, for reuse as catalyst.
|
