| 摘要 |
This invention relates to a method of gasification/combustion of a solid fuel in a furnace by means of a grate device comprising a plurality of grate means, positioned on different levels, which device is intended to be positioned at the bottom portion of the furnace. According to the invention the method is characterized by the combination of the following steps: the solid fuel is fed out onto the outside of the grate device so that the fuel forms a layer on the same; primary air is brought up through the grate device (1), the primary air during the passage from one grate means to a superposed grate means (3-6) hitting against the underside of this grate means, whereby the pressure fall of the primary air becomes great; the primary air is evenly and effectively distributed out to the fuel on the outside of the grate device (1), the primary air being allowed to stream outwards from each grate means (3-6) with a low velocity. The invention also relates to a grate device which is usable for carrying out the method. |
