Method and system for preparing synthetic oil
A method of preparing synthetic oil, the method including producing synthetic gas by introducing the feed into a synthetic gas production reaction in the presence of a catalyst, producing synthetic oil and an FT tail gas by introducing the synthetic gas into a Fischer-Tropsch (FT) reaction, regenerating the catalyst used in the producing of the synthetic gas in a catalyst regenerator, and supplying the FT tail gas to a catalyst regenerator.
1 . A method of preparing synthetic oil, the method comprising:
producing a reformed synthetic gas from a feed comprising a carbon material using a catalyst;
subjecting the reformed synthetic gas to a Fischer-Tropsch (FT) process to produce synthetic oil and an FT tail gas;
regenerating the catalyst in a catalyst regenerator; and
supplying the FT tail gas to the catalyst regenerator.
2 . The method of claim 1 , wherein the producing the reformed synthetic gas comprises a gasification reaction.
3 . The method of claim 1 , wherein the producing the reformed synthetic gas comprises a partial oxidation reaction, a catalytic reforming reaction, a water-gas shift reaction, a hydrogen injection, or any combination thereof.
4 . The method of claim 1 , wherein the producing the reformed synthetic gas comprises physically or chemically scrubbing the reformed synthetic gas.
5 . The method of claim 1 , wherein the method further comprises adjusting the FT tail gas to a temperature in a range of about 400° C. to about 1,000° C. before supplying the FT tail gas to the catalyst regenerator.
6 . The method of claim 5 , wherein the adjusting of the temperature of the FT tail gas comprises partially combusting the FT tail gas, pre-heating the FT tail gas, or a combination thereof.
7 . The method of claim 1 , wherein the method further comprises adjusting the catalyst regenerator temperature to a range of about 400° C. to about 1,000° C.
8 . The method of claim 7 , wherein the adjusting of the temperature of the catalyst regenerator is carried out by heating the catalytic regenerator with an electric heater or an inductive heater.
9 . The method of claim 7 , wherein the adjusting of the reaction temperature of the catalyst regenerator further comprises partially combusting the FT tail gas with oxygen.
10 . The method of claim 1 , wherein the catalyst comprises one or more of a nickel-based catalyst, an iron-based catalyst, a cobalt-based catalyst, a ruthenium-based catalyst, a platinum-based catalyst, or a rhodium-based catalyst.
11 . The method of claim 1 , wherein the producing of the reformed synthetic gas is carried out in two or more reactors operating in swing mode.
12 . The method of claim 1 , wherein the producing of the reformed synthetic gas is carried out in a circulating fluidized bed reactor.
13 . The method of claim 1 , wherein the method comprises generating a catalyst regenerator tail gas from the catalyst regenerator and wherein the catalyst regenerator tail gas is introduced into one or more processes downstream of producing the reformed synthetic gas.
14 . A system for preparing synthetic oil, the system comprising:
a section for producing a reformed synthetic gas comprising:
a feed inlet; and
one or more reactors to generate a reformed synthetic gas in the presence of a catalyst;
a section for carrying out a Fischer-Tropsch (FT) process comprising:
an inlet for introducing the reformed synthetic gas;
an outlet for discharging synthetic oil;
an outlet for discharging an FT tail gas;
a section for regenerating the catalyst comprising a catalyst regenerator; and
a recirculating conduit for supplying the FT tail gas to the section for regenerating catalyst.
15 . The system of claim 14 , wherein the system further comprises a pre-heater, a pre-combustor, or a combination thereof downstream of the recirculating conduit for supplying the FT tail gas to the section for regenerating catalyst.
16 . The system of claim 14 , wherein the system further comprises a catalyst regenerator tail gas conduit for transporting tail gas generated from the catalyst regenerator to a catalytic reformer in the section for producing a reformed synthetic gas, optionally wherein the tail gas conduit for transporting tail gas generated from the catalyst regenerator to a catalytic reformer comprises an oxygen inlet.
17 . The system of claim 14 , wherein the system further comprises one or more oxygen inlets, optionally wherein one or both of the catalyst regenerator and recirculation conduit comprises an oxygen inlet.
18 . The method of claim 1 , wherein the FT tail gas comprises methane.
19 . The method of claim 1 , wherein supplying the FT tail gas to the catalyst regenerator converts methane in the FT tail gas to a catalyst regenerator tail gas comprising H 2 and CO and supplying the catalyst regenerator tail gas upstream of a catalytic reforming unit.
20 . The method of claim 1 , wherein the carbon material is biomass.