Process for purifying a hydrogen gas and recovering liquifiable hydrocarbons from hydrocarbonaceous effluent streams

Patent · Tue Aug 24 04:00:00 EDT 1993

OSTI ID:6056812

Pappas, S W; Felch, D E

A process is described for producing a hydrogen-rich gas stream by treating a hydrogen and hydrocarbon effluent from a catalytic hydrocarbon conversion reaction zone comprising the steps of: (a) passing at least a portion of said effluent to a first vapor liquid separation zone and recovering therefrom a hydrogen-containing vapor phase and a first liquid phase comprising hydrocarbon; (b) passing at least a portion of the hydrogen-containing vapor phase in indirect heat exchange with a hydrogen rich gas stream; (c) refrigerating the heat-exchanged hydrogen-containing vapor phase; (d) passing only a portion of the first liquid phase comprising about 20 to 75 vol. % of the total first liquid phase in indirect heat exchange with a second liquid phase; (e) refrigerating the heat-exchanged first liquid; (f) passing the refrigerated hydrogen-containing vapor phase and the refrigerated first liquid at a temperature of from [minus]20 to 20 F to an absorption zone and counter currently contacting said vapor phase with said first liquid in said absorption zone to absorb hydrocarbons from said vapor phase; (g) withdrawing said second liquid phase from said absorption zone; and (h) withdrawing said hydrogen-rich gas stream from said absorption zone and recovering said hydrogen rich gas stream after the heat exchange of step (b).

• Assignee: UOP, Des Plaines, IL (United States)
• Patent Number(s): A; US 5238555
• Application Number: PPN: US 7-799593
• OSTI ID: 6056812
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
08 HYDROGEN
080100* -- Hydrogen-- Production
ADSORPTION
COOLING
ELEMENTS
ENERGY TRANSFER
FLUIDS
GASES
HEAT TRANSFER
HYDROCARBONS
HYDROGEN
LIQUIDS
NONMETALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
SORPTION
VAPORS