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US 10,239,754 B1Granted
Process for stripping hydroprocessed effluent for improved hydrogen recovery
AssigneeUop LLC
InventorsNeeraj Tiwari, Richard K. Hoehn, Kiran Ladkat
Life of this patent
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Abstract
A process is disclosed for reducing loss of hydrogen in solution to the fractionation section of a hydroprocessing unit. The hot liquid stream is stripped with an inert gas in a hot flash stripper to urge hydrogen into the hot flash vapor stream. Substantial conservation of hydrogen gas is achieved.
Claims14
A hydroprocessing process comprising:
- hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor with a hydrogen stream over hydroprocessing catalyst to provide hydroprocessed effluent stream;
- separating said hydroprocessed effluent stream in a hot separator to provide a hot vapor stream and a hot liquid stream having a concentration of hydrogen;
- stripping the hot liquid stream in a hot flash stripper with an inert gas stream to strip hydrogen from the hot liquid stream to provide a hot flash vapor stream of hydrogen and a hot flash liquid stream;
- recovering hydrogen from said hot flash vapor stream.
1 more element
A hydroprocessing process comprising:
- hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor with a hydrogen stream over hydroprocessing catalyst to provide hydroprocessed effluent stream;
- separating said hydroprocessed effluent stream in a hot separator to provide a hot vapor stream and a hot liquid stream having a concentration of hydrogen;
- stripping the hot liquid stream in a hot flash stripper with an inert gas stream to strip hydrogen from the hot liquid stream to provide a hot flash vapor stream of hydrogen and a hot flash liquid stream;
- stripping said hot flash liquid stream with an inert gas stream to remove additional volatiles;
- and
- recovering hydrogen from said hot flash vapor stream.
3 more elements
Dependencies are inferred from the claim text.