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US 12,515,158 B2Granted
Vapor-liquid contacting apparatus and process with downcomer at shell
AssigneeUop LLC
InventorZhanping Xu
Life of this patent
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Abstract
A high capacity and high efficiency vapor-liquid contacting apparatus and process is useful in distillation columns and other vapor-liquid contacting processes. The apparatus is characterized by a half module comprising a downcomer against a shell of a vessel for transporting liquid to a subjacent stage which utilizes a demister to effect vapor-liquid separation at the downcomer outlet.
Claims3
A process for vapor-liquid contacting, comprising the steps of:
- directing a liquid through an inlet of a downcomer in a vessel;
- contacting the liquid with a shell of the vessel or an outer wall of the downcomer adjacent to the shell of the vessel while descending in said downcomer;
- directing the liquid from an outlet of the downcomer into a contacting volume;
- entraining the liquid in a first portion of a vapor ascending in said contacting volume to flow co-currently into a demister;
- separating the liquid from the first portion of the vapor in the demister to provide a separated liquid;
- and
- passing the separated liquid from the demister onto a transport deck having a plurality of perforations,
- wherein only the first portion of the vapor flows up passed the transport deck through the demister and a second portion of the vapor flows up passed the transport deck through the plurality of perforations,
- wherein the first portion of the vapor is prohibited from flowing up passed the transport deck through the plurality of perforations, and
- wherein the second portion of the vapor is prohibited from flowing up passed the transport deck through the demister.
7 more elements
Dependencies are inferred from the claim text.