Method for using natural gas fuel to improve performance of pressure swing adsorption hydrogen unit in an integrated facility
AssigneeUop LLC
InventorBradley P. Russell
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Abstract
A process is disclosed for increasing hydrogen recovery in an integrated refinery and petrochemical complex in which natural gas is used as a co-purge gas in a pressure swing adsorption unit. This natural gas is recovered in tail gas from the pressure swing adsorption unit. This process is useful for refinery off-gas and partial oxidation feeds.
Claims17
A process for purifying a hydrogen containing feed with less than about 1 mol % carbon dioxide comprising sending said hydrogen containing feed to a pressure swing adsorption unit, purging said pressure swing adsorption unit with a methane containing stream comprising greater than about 80 mol % methane in the same flow direction as said hydrogen containing feed, recovering a product stream comprising more than about 99 mol % hydrogen and a fuel gas stream.
Dependencies are inferred from the claim text.