Process for catalytic reforming
AssigneeUop LLC
InventorsEleftherios Adamopoulos, Wim Frans Elseviers, Bryan K. Glover
Life of this patent
Estimating the term…
Abstract
One exemplary embodiment can be a process for catalytic reforming The process can include catalytically reforming a hydrocarbon feed in a reaction zone, obtaining an effluent stream having hydrogen and hydrocarbons from the reaction zone, obtaining from at least a portion of the effluent stream a waste hydrocarbon stream from an adsorption zone, passing at least a portion of the waste hydrocarbon stream as a feed stream across a feed side of a membrane having the feed side and a permeate side, and being selective for hydrogen over one or more C1-C6 hydrocarbons, and withdrawing from the permeate side a permeate stream enriched in hydrogen compared with a residue stream withdrawn from the feed side.
Claims20
A process for catalytic reforming, comprising:
- A) catalytically reforming a hydrocarbon feed in a reaction zone;
- B) obtaining an effluent stream comprising hydrogen and hydrocarbons from the reaction zone;
- C) obtaining from at least a portion of the effluent stream a waste hydrocarbon stream from an adsorption zone;
- D) passing at least a portion of the waste hydrocarbon stream as a feed stream across a feed side of a membrane having the feed side and a permeate side, and being selective for hydrogen over one or more C1-C6 hydrocarbons;
- and
- E) withdrawing from the permeate side a permeate stream enriched in hydrogen compared with a residue stream withdrawn from the feed side.
A process for catalytic reforming, comprising:
- A) catalytically reforming a hydrocarbon feed in a reaction zone;
- B) obtaining an effluent stream comprising hydrogen and hydrocarbons from the reaction zone;
- C) obtaining from at least a portion of the effluent stream a waste hydrocarbon stream from an adsorption zone;
- D) passing at least a portion of the waste hydrocarbon stream as a feed stream across a feed side of a hollow fiber membrane having the feed side and a permeate side, and being selective for hydrogen over nitrogen, carbon monoxide, and one or more C1-C6 hydrocarbons;
- and
- E) withdrawing from the permeate side a permeate stream enriched in hydrogen and comprising at least about 85%, by mole, hydrogen.
A process for catalytic reforming, comprising:
- A) catalytically reforming a hydrocarbon feed in a reaction zone;
- B) obtaining an effluent stream comprising hydrogen and hydrocarbons from the reaction zone;
- C) separating a reformate liquid stream and a gas stream, comprising hydrogen and at least one of nitrogen, one or more carbon oxides, and one or more C1-C6 hydrocarbons, from the effluent stream;
- D) recycling at least a portion of the gas stream to the reaction zone;
- E) passing at least another portion of the gas stream to an adsorption zone to separate hydrogen;
- F) withdrawing a hydrogen product stream from the adsorption zone;
- G) withdrawing a tail gas stream from the adsorption zone;
- H) compressing and cooling the tail gas stream;
- I) passing at least a portion of a waste hydrocarbon stream as a feed stream across a feed side of a hollow fiber membrane having the feed side and a permeate side, and being selective for hydrogen over at least one of nitrogen, the one or more carbon oxides, and the one or more C1-C6 hydrocarbons;
- J) withdrawing from the permeate side a permeate stream enriched in hydrogen compared to a residue stream;
- and
- K) withdrawing from the feed side the residue stream enriched in at least one of nitrogen, the one or more carbon oxides, and the one or more C1-C6 hydrocarbons compared to the permeate stream.
Dependencies are inferred from the claim text.