| 摘要 |
The invention concerns a system (10, 100) for the cooling down and dry filtering of process gas produced in a ferroalloy smelting process. The system (10, 100) includes an apparatus (20) for the dry filtering of process gas which includes a filtering chamber (22) in which a filtering element (24) is located. Process gas is fed into the filtering chamber through an inlet in a supply line (26) and directed to the filtering element (24). Filtered process gas is discharged through a discharge line (28) after having been filtered through the filtering element (24). The apparatus (20) further includes a cleaning gas inlet (32) for feeding a cleaning gas into the filtering chamber (22) for dislodging solids caught in the filtering element (24). The dislodged solids are collected in a discharge chamber (34) positioned below the filtering chamber (22) before being conveyed to a collection hopper (38) located below the discharge chamber (34). An equalisation conduit (46) running between the filtering chamber (22) and the collection hopper (38) is used to control the pressure difference between the filtering chamber (22) and collection hopper (38) in order to controlling the discharging of the solids. |
