| 摘要 |
A heat exchanger for heat exchange between downwardly flowing solid particulate material and a gas comprises a substantially conical casing having arranged at the bottom thereof a tubular outlet for material having undergone heat exchange. A tube extends downwardly into the casing substantially symmetrically about the vertical axis thereof and forms an outer defining wall of an annular inlet through which material to be treated is charged to the interior of the casing. Extending through the tube co-axially therewith is a gas inlet having a gas inlet pipe which extends down into the casing and which forms an inner defining wall of the annular material inlet. The gas inlet pipe has a discharge orifice located at a given distance beneath the discharge orifice of the material inlet, and a collecting chamber for gas having undergone heat exchange and arranged at the top of the casing is laterally defined by the wall of the tube and the wall of the casing, and is provided with a gas outlet. |
