Reducing CO2 levels in CO2-rich natural gases converted into liquid fuels
Abstract
Provided is a process for converting CO 2 -rich natural gas into liquid fuel. The process includes introducing a CO 2 -rich natural gas feed stream into a synthesis gas formation reactor and then forming a synthesis gas. At least a portion of the synthesis gas is then introduced into a Fischer-Tropsch reactor. A Fischer-Tropsch process is conducted generating a Fischer-Tropsch product. A naphtha is separated from the Fischer-Tropsch product and introduced into a naphtha reformer. Hydrogen by-product is generated by reforming the naphtha to obtain a C 6 -C 10 product having a hydrogen to carbon ratio less than about 2.0. At least a portion of the hydrogen by-product is recirculated and mixed with the CO 2 -rich natural gas feed stream. The hydrogen by-product mixes with the CO 2 -rich natural gas feed stream such that at least a portion of the CO 2 present in the natural gas feed stream is converted into additional CO by a reverse water gas shift reaction so that the synthesis gas derived from the feed stream contains a volume amount of CO 2 that is less than a volume amount of CO 2 present in the feed stream prior to mixing with the hydrogen by-product. Finally, the additional CO is converted into hydrocarbons in the Fischer-Tropsch reactor.
Claims
exact text as granted — not AI-modified1 - 6 . (Canceled)
7 . A Fischer-Tropsch-derived product comprising a hydrogen to carbon ratio of less than about 2.0.
8 . The Fischer-Tropsch-derived product of claim 7 , comprising a hydrogen to carbon ratio of less than about 1.95.
9 . The Fischer-Tropsch-derived product of claim 7 , comprising a hydrogen to carbon ratio of less than about 1.90.
10 . (Canceled)
11 . The Fischer-Tropsch-derived product of claim 29 , wherein the C 6 -C 10 product has a hydrogen to carbon ratio that is at least about 0.1 unit less than the hydrogen to carbon ratio of the C 10 + product.
12 . The Fischer-Tropsch-derived product of claim 29 , wherein the C 6 -C 10 product has a hydrogen to carbon ratio that is at least about 0.25 unit less than the hydrogen to carbon ratio of the C 10 + product.
13 - 23 . (Canceled)
24 . The Fischer-Tropsch-derived product of claim 7 , wherein the Fischer-Tropsch-derived product is a C 5 + product.
25 . The Fischer-Tropsch-derived product of claim 7 , wherein the Fischer-Tropsch-derived product is a C 6 -C 10 product.
26 . The Fischer-Tropsch-derived product of claim 7 , wherein the Fischer-Tropsch-derived product is a C 10 + product.
27 . The Fischer-Tropsch-derived product of claim 8 , wherein the Fischer-Tropsch-derived product is a C 6 -C 10 product.
28 . The Fischer-Tropsch-derived product of claim 9 , wherein the Fischer-Tropsch-derived product is a C 6 -C 10 product.
29 . A Fischer-Tropsch-derived product comprising a C 10 + product having a hydrogen to carbon ratio of less than about 2.0 and C 6 -C 10 product having a hydrogen to carbon ratio of less than the hydrogen to carbon ratio of the C 10 + product.
30 . The Fischer-Tropsch-derived product of claim 29 , wherein the C 6 -C 10 product has an aromatic content of at least about 2 wt. %.
31 . The Fischer-Tropsch-derived product of claim 29 , wherein the C 6 -C 10 product has an aromatic content of at least about 10 wt. %.
32 . The Fischer-Tropsch-derived product of claim 29 , wherein the C 6 -C 10 product has an aromatic content of at least about 25 wt. %.
33 . The Fischer-Tropsch-derived product of claim 25 , wherein the C 6 -C 10 product has an aromatic content of at least about 2 wt. %.
34 . The Fischer-Tropsch-derived product of claim 25 , wherein the C 6 -C 10 product has an aromatic content of at least about 10 wt. %.
35 . The Fischer-Tropsch-derived product of claim 25 , wherein the C 6 -C 10 product has an aromatic content of at least about 25 wt. %.Join the waitlist — get patent alerts
Track US2005043417A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.