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    • 4. 发明授权
    • Fluid coking process
    • 流体焦化工艺
    • US4295956A
    • 1981-10-20
    • US126400
    • 1980-03-03
    • William J. Metrailer
    • William J. Metrailer
    • C10B55/10C10G9/00C10G9/32
    • C10G9/005C10B55/10C10G9/32
    • A fluid coking process is provided in which the recycling of coke particles of less than about 44 microns in diameter to the coking reactor is minimized by passing the stream of coke withdrawn from the coking reactor to a vessel comprising a fluidized bed of solids separated into two zones. The coke withdrawn from the coker is passed into one zone where seed generation for the process is performed. Coke recycled to the coker is withdrawn from the second zone which is operated as an elutriation zone. The solid fines of less than 44 microns are removed overhead from the vessel with the gaseous effluent of the vessel. This improvement is particularly suitable for once-through fluid coking to minimize small fines being present in the coker liquid product.
    • 提供了一种流体焦化方法,其中通过使从焦化反应器中排出的焦炭流通过包含分离成两部分的固体流化床的容器将直径小于约44微米的焦炭颗粒再循环至焦化反应器被最小化 区域。 从焦化器中取出的焦炭进入一个进行该过程的种子生成的区域。 再循环到焦化器的焦炭从作为淘汰区域运行的第二区域排出。 小于44微米的固体细粉从容器的顶部除去容器的气态流出物。 这种改进特别适用于直接流体焦化以使焦化液体产品中存在的小细屑最小化。