| 摘要 |
PURPOSE:To facilitate the entry of ash into a jet pulsation pump by a method wherein the sum of the volume of the cooling feed water and of the jetting water to be supplied to a clinker hopper is rendered to be slightly smaller than the volume to be sucked by said jet pulsation pump. CONSTITUTION:The hopper 1, which is connected to the furnace bottom tube of a boiler, is water-sealed by immersing a sealing plate 10 fixed at the lower part of said tube into the cooling feed water 9 stored in a sealing trough 8 and, after that, said water 9 is uniformly led into the hopper 1 along the whole periphery of the hopper 1. Then, the water 9 is discharged from a water intake port 11 through an overflow pipe 12 in order to maintain the temperature of the water within the hopper 1 below the fixed value. In order to discharge ash, the jet pulsation pump 6 and a clinker crusher 7 are put into operation. Henceforth a gate 3 is open and then water is jetted from nozzles 14 under the controlled conditions that the sum of the volume of the water jetted from the nozzles 14 and of the cooling feed water 9 is rendered to be slightly smaller than the volume to be sucked by the pump 6. |
