Reduction of carbon dioxide emissions from fischer-tropsch gtl facility by aromatics production

A process for reducing CO2 emissions from a Fischer-Tropsch GTL facility, the process comprising:

• a) introducing a synthesis gas comprising CO, H2 and CO2, into a Fischer-Tropsch reactor;
• b) performing a Fischer-Tropsch process on the synthesis gas to produce a Fischer-Tropsch product;
• c) separating the Fischer-Tropsch product into unreacted CO, H2 and CO2, a C1-C5 product having a hydrogen to carbon ratio of at least about 2.0, a naphtha, and a C10+ product having a hydrogen to carbon ratio of about 2.0;
• d) recirculating the unreacted CO, H2 and CO2 into at least one of a feed stream being fed into a synthesis gas formation reactor that produces the synthesis gas or the synthesis gas being fed into the Fischer-Tropsch reactor;
• e) reforming the naphtha to generate hydrogen by-product and C6-C10 product with a hydrogen to carbon ratio of less than about 2.0;
• and
• f) mixing the hydrogen by-product with the feed stream so that at least a portion of any CO2 emitted from the Fischer-Tropsch reactor and recirculated into the feed stream, or any CO2 otherwise present in the feed stream, is converted into additional CO by a reverse water gas shift reaction;
• and
• g) converting the additional CO into hydrocarbons in the Fischer-Tropsch reactor.

A process for reducing CO2 emissions from a Fischer-Tropsch GTL process, the process comprising:

• a) introducing a synthesis gas comprising CO, H and CO2, into a Fischer-Tropsch reactor;
• b) conducting a Fischer-Tropsch process on the synthesis gas to obtain a Fischer-Tropsch product;
• c) introducing the Fischer-Tropsch product into a first separator and separating the Fischer-Tropsch product into unreacted CO, H2 and CO2, and hydrocarbon products comprising C5+ liquids;
• d) directing at least a portion of the unreacted CO, H2 and CO2 separated from the Fischer-Tropsch product back into at least one of a feed stream being fed into a synthesis gas formation reactor, that produces the synthesis gas or the synthesis gas being fed into the Fischer-Tropsch reactor;
• e) directing at least a portion of the hydrocarbon products separated from the Fischer-Tropsch product into a second separator;
• f) in the second separator, separating C1-C5 product having a hydrogen to carbon ratio of at least about 2.0 and separating C10+ product having a hydrogen to carbon ratio of about 2.0 from the hydrocarbon products fed into the second separator;
• g) in the second separator, separating naphtha from the hydrocarbon products fed into the second separator;
• h) feeding at least a portion of the naphtha into a naphtha reformer;
• i) generating hydrogen by-product by reforming the naphtha in the naphtha reformer to produce C6-C10 product having a hydrogen to carbon ratio of less than about 2.0;
• j) recirculating at least a portion of the hydrogen by-product, generated during naphtha reforming, to mix with the feed stream so that at least a portion of the CO2 emitted by the Fischer-Tropsch process, or otherwise present in the feed stream, is converted into additional CO by a reverse water gas shift reaction fueled by the hydrogen by-product;
• and
• k) converting the additional CO into hydrocarbons in the Fischer-Tropsch reactor.