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US 10,767,124 B2Granted
Process for recovering hydrogen and liquefied petroleum gas from gaseous streams
AssigneeUop LLC
InventorsKiran Ladkat, Neeraj Tiwari
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Abstract
A process for recovery hydrogen and LPG from a gaseous separated hydroprocessed stream and a stripper gaseous stream and/or a fractionator gaseous stream by increasing the pressure of the stripper gaseous stream and/or the fractionator gaseous stream. Both streams or all three streams can be subjected to sponge absorption and hydrogen recovery in series.
Claims10
A process for recovering hydrogen comprising:
- hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor to provide a hydroprocessed effluent stream;
- separating said hydroprocessed effluent stream in a separation section comprising a separator to provide a liquid separated hydroprocessed stream and a gaseous separated hydroprocessed stream;
- stripping said liquid separated hydroprocessed stream to provide a stripper gaseous stream having a pressure of about 0.35 MPa (gauge) to about 2.0 MPa (gauge);
- increasing the pressure of the stripper gaseous stream to about 1.4 MPa (gauge) to about 6.9 MPa (gauge);
- absorbing C3+ hydrocarbons from said gaseous separated hydroprocessed stream and said stripper gaseous stream together by contact with a sponge oil in a sponge absorber, wherein said sponge absorber operates at an overhead pressure of between about 1.4 MPa (gauge) and about 6.9 MPa (gauge);
- and
- recovering hydrogen from said gaseous separated hydroprocessed stream and said stripper gaseous stream together.
4 more elements
Dependencies are inferred from the claim text.