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US 11,224,849 B2Granted
Scale collection device for downflow reactors
AssigneeUop LLC
InventorsZhanping Xu, Pengfei Chen
Life of this patent
Estimating the term…
Abstract
The invention involves a scale collection device that is located within downflow reactor head for removing solids from feed streams to increase reactor operating cycle time without impact on effective reactor space for catalyst loading and reactor pressure drop. More particularly, a scale collection device is in an upper portion of a reactor vessel above a rough liquid distribution tray and a vapor-liquid distribution tray.
Claims22
A reactor comprising an upper portion and a lower portion, the upper portion comprising:
- a rough liquid distribution tray comprising a bottom plate comprising a plurality of perforations and a separate plurality of chimneys with caps affixed to the bottom plate and extending upward therefrom;
- a vapor-liquid distribution tray located below the rough liquid distribution tray, and
- a scale collection device above the bottom plate, the scale collections device comprising a cylindrical wall attached to the bottom plate, and a filtering zone comprising filtering material.
An apparatus comprising an upper portion and a lower portion the upper portion comprising:
- a rough liquid distribution tray comprising plurality of perforations and a separate plurality of chimneys and caps extending upward from the rough liquid distribution tray;
- a vapor-liquid distribution tray located below the rough liquid distribution tray, and
- a scale collection device above the rough liquid distribution tray, the scale collection device comprising a cylindrical wall defining a filtering zone comprising filtering material.
Dependencies are inferred from the claim text.