| 摘要 |
Disclosed is a pelletizer vessel and a prilling head assembly for use in the pelletizer vessel for prilling a hard resid material. The pellitizer vessel has an has an upright pelletizing vessel with an upper prilling zone, a sphere-forming zone below the prilling zone, a cooling zone below the sphere-forming zone, a bath below the cooling zone, and a prilling head in the prilling zone rotatable along a vertical axis and having a plurality of discharge orifices for throwing molten material radially outwardly. A vertical height of the sphere-forming zone is sufficient to allow material discharged from the prilling head to form substantially spherical liquid pellets. Nozzles are provided for spraying water inwardly into the cooling zone to cool and at least partially solidify the liquid pellets to be collected in the bath. The prilling head assembly has a a feed inlet to allow for the introduction of resid material, rotary union with a fluid tight seal, a rotatable pipe to convey a resid material to the prilling head, a drive wheel to provide rotation to the rotatable pipe, a support housing having a mount for attachment to the pellitizer vessel, and a prilling head with a flow passage in fluid communication with the rotatable pipe and radially offset orifices. Bearings are provided for stablizing and guiding the rotatable pipe. Inert gas is introduced into the annular spaces of the support housing to prohibit foreign matter.
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