PROCESS FOR RECOVERING HYDROCARBON FROM HYDROPROCESSED GASEOUS STREAM

• US 20200131445A1
• Filed: 10/24/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: UOP Llc (Honeywell International Inc.)
• Original Assignee: UOP Llc (Honeywell International Inc.)
• Inventors: Hoehn, Richard K., Griswold, Olga I.
• Granted Patent: US 11,028,331 B2
• Time in Patent Office: Days
• CPC Class Codes: C10G 2300/202 Heteroatoms content, i.e. S, N, O, P
• CPC Class Codes: C10G 2300/207 Acid gases, e.g. H2S, COS, SO2, HCN
• CPC Class Codes: C10G 67/14 including at least two different refining steps in the absence of hydrogen

Abstract

A process for recovery of C₅+ hydrocarbons from a stripper gaseous hydroprocessed stream by contacting it with a stripper liquid stream. The stripper liquid stream absorbs C₅+ hydrocarbons predominantly over other hydrocarbons thereby increasing C₅+ yield and enabling the stripper gaseous stream to meet hydrocarbon limits. The rich absorbent stream may be sent to recovery with the stripper liquid from whence it came.

Claims

1. A process for recovering hydrocarbons comprising:

hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor to provide a hydroprocessed effluent stream;

stripping a hydroprocessed stream taken from said hydroprocessed effluent stream to provide a stripper gaseous stream and a stripped liquid stream; and

absorbing C₅+ hydrocarbons from said stripper gaseous stream by contact with an absorbent stream to provide a C₅+-rich absorbent stream.

2. The process of claim 1 wherein C₅+ hydrocarbons are a predominant material absorbed from the stripper gaseous stream in the rich absorbent stream.

3. The process of claim 1 further comprising taken said absorbent stream from said stripped liquid stream.

4. The process of claim 1 wherein said stripping step comprises condensing a stripper overhead stream and separating said stripper gaseous stream from a stripped liquid overhead stream.

5. The process of claim 1 further comprising scrubbing acid gases from said stripper gaseous stream by contact with a solvent to provide a scrubbed stripper gaseous stream and absorbing C₅+ hydrocarbons from said scrubbed stripper gaseous stream.

6. The process of claim 4 further comprising washing amines from said scrubbed stripper gaseous stream to provide a washed, scrubbed stripper gaseous stream and absorbing C₅+ hydrocarbons from said washed, scrubbed stripper gaseous stream.

7. The process of claim 1 further comprising adding said rich absorbent stream to said stripped liquid stream.

8. The process of claim 7 further comprising splitting said stripped liquid stream into an absorbent stream and a remaining stripped liquid stream and said rich absorbent stream is added to said remaining liquid stream.

9. The process of claim 1 further comprising separating said hydroprocessed effluent stream in a separation section comprising a separator to provide a separated liquid hydroprocessed stream comprising said hydroprocessed stream and a separated gaseous hydroprocessed stream.

10. The process of claim 9 wherein said separation step further comprises separating a process stream taken from said hydroprocessed effluent stream in a separator to provide a separated gaseous hydroprocessed stream and a separated liquid hydroprocessed stream and taking said hydroprocessed stream from said separated liquid hydroprocessed stream.

11. The process of claim 10 wherein said separation step further comprises separating said hydroprocessed effluent stream in a hot separator to provide a hot separated liquid hydroprocessed stream and a hot separated gaseous stream comprising said process stream taken from said hydroprocessed effluent stream.

12. The process of claim 1, further comprising at least one of:

sensing at least one parameter of the process, and

generating or transmitting a signal or data from the sensing.

13. A process for recovering hydrocarbons comprising:

hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor to provide a hydroprocessed effluent stream;

stripping a hydroprocessed stream taken from said hydroprocessed effluent stream to provide a stripper gaseous stream and a stripped liquid stream;

condensing a stripper overhead stream;

separating said stripper gaseous stream from a stripped liquid overhead stream;

scrubbing acid gases from said stripper gaseous stream by contact with a solvent to provide a scrubbed stripper gaseous stream and

absorbing C₅+ hydrocarbons from said scrubbed stripper gaseous stream by contact with an absorbent stream taken from said stripped liquid stream to provide a rich absorbent stream.

14. The process of claim 13 wherein C₅+ hydrocarbons are a predominant material absorbed from the stripper gaseous stream in the rich absorbent stream.

15. The process of claim 13 further comprising washing amines from said scrubbed stripper gaseous stream to provide a washed, scrubbed stripper gaseous stream and absorbing C₅+ hydrocarbons from said washed, scrubbed stripper gaseous stream.

16. The process of claim 13 further comprising adding said rich absorbent stream to said stripped liquid stream.

17. The process of claim 16 further comprising splitting said stripped liquid stream into an absorbent stream and a remaining stripped liquid stream and said rich absorbent stream is added to said remaining liquid stream.

18. The process of claim 13 further comprising separating said hydroprocessed effluent stream in a separation section comprising a separator to provide a separated liquid hydroprocessed stream comprising said hydroprocessed stream and a separated gaseous hydroprocessed stream.

19. The process of claim 18 wherein said separation step further comprises:

separating said hydroprocessed effluent stream in a hot separator to provide a hot separated liquid hydroprocessed stream and a hot separated gaseous hydroprocessed stream;

separating said hot separated gaseous hydroprocessed stream in a cold separator to provide a cold separated gaseous hydroprocessed stream and a cold separated liquid hydroprocessed stream and taking said hydroprocessed stream from said cold separated liquid hydroprocessed stream.

20. A process for recovering hydrocarbons comprising:

hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor to provide a hydroprocessed effluent stream;

stripping a hydroprocessed stream taken from said hydroprocessed effluent stream to provide a stripper gaseous stream and a stripped liquid stream; and

absorbing C₅+ hydrocarbons from said stripper gaseous stream by contact with an absorbent stream taken from said stripped liquid stream to provide a rich absorbent stream, wherein C₅+ hydrocarbons are a predominant material absorbed from the stripper gaseous stream in the rich absorbent stream.