| 摘要 |
A grate structure (20) for a furnace comprises a grate (38), which has holes (42) for the passing through of gaseous substances and ash. On the first side of the grate there is a dome-shaped lid part, which is dimensioned to cover the grate at least partly. The lid part prevents the holes of the grate from clogging, whereby the gaseous substances can flow continuously through the grate. A flow channel (26) passes through the grate, in which flow channel there is a support axis (40) for supporting the lid part. On the second side of the grate there is a trough-like bottom part (22) surrounding the flow channel. There is a first ring-shaped gap (32) between the edge of the bottom part and the edge of the lid part and there is a second ring-shaped gap (34) between the edge of the lid part and the wall of the flow channel, into which second ring-shaped gap the grate is fitted. The gaseous substances can flow via the first gap underneath the grate and via the second gap through the grate above the grate to the space between the lid part and the grate. From this space the gaseous substances exit along the flow channel. The grate structure is advantageously the grate structure of the furnace of a co- current gasifier. |
