USING FOSSIL FUELS TO INCREASE BIOMASS-BASED FUEL BENEFITS
First Claim
Patent Images
1. A method, comprising(A) providing fossil-fuel hydrocarbon feed;
- (B) forming from said fossil-fuel hydrocarbon feed a gaseous product stream comprising hydrogen and carbon monoxide at a mole ratio of H2;
CO of at least 2.0;
1;
(C) adding the gaseous product stream formed in step (B) to a syngas stream containing hydrogen and CO that is derived from carbonaceous feed material, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio greater than that of said syngas stream derived from carbonaceous feed material;
(D) converting said mixed syngas stream to form product fuel and recovering from said converting a byproduct stream comprising one or more of hydrogen, CO, water vapor, methane, and hydrocarbons containing 2 to 8 carbon atoms and 0 to 2 oxygen atoms; and
(E) reacting up to 100% of said byproduct stream in said formation of said gaseous product stream in step (B).
1 Assignment
0 Petitions
Accused Products
Abstract
In the production of fuel such as ethanol from carbonaceous feed material such as biomass, a stream comprising hydrogen and carbon monoxide is added to the raw gas stream derived from the feed material, and the resulting combined stream is converted into fuel and a gaseous byproduct such as by a Fischer-Tropsch reaction. The gaseous byproduct may be utilized in the formation of the aforementioned stream comprising hydrogen and carbon monoxide.
56 Citations
29 Claims
-
1. A method, comprising
(A) providing fossil-fuel hydrocarbon feed; -
(B) forming from said fossil-fuel hydrocarbon feed a gaseous product stream comprising hydrogen and carbon monoxide at a mole ratio of H2;
CO of at least 2.0;
1;(C) adding the gaseous product stream formed in step (B) to a syngas stream containing hydrogen and CO that is derived from carbonaceous feed material, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio greater than that of said syngas stream derived from carbonaceous feed material;(D) converting said mixed syngas stream to form product fuel and recovering from said converting a byproduct stream comprising one or more of hydrogen, CO, water vapor, methane, and hydrocarbons containing 2 to 8 carbon atoms and 0 to 2 oxygen atoms; and (E) reacting up to 100% of said byproduct stream in said formation of said gaseous product stream in step (B). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for improving the carbon conversion efficiency of fuel production from carbonaceous feed material, comprising
(A) deriving a raw gaseous stream comprising hydrogen and carbon monoxide in a mole ratio of hydrogen: - carbon monoxide of less than 2;
1 from carbonaceous feed material;(B) forming a second gaseous stream comprising hydrogen and carbon monoxide in a mole ratio of hydrogen;
carbon monoxide greater than 2;
1 and also comprising carbon dioxide, and combining said second gaseous stream and the stream derived in step (A);(C) converting said combined stream into liquid product fuel, and a gaseous byproduct mixture comprising hydrogen, carbon monoxide, water vapor and methane; (D) reacting hydrocarbon fuel and steam to form said second gaseous stream, wherein at least a portion of said gaseous byproduct mixture is combusted to produce heat which is consumed in said reaction.
- carbon monoxide of less than 2;
-
22. A method comprising
(A) providing a gaseous product stream which is formed from fossil-fuel-based hydrocarbon feed and which comprises hydrogen and carbon monoxide at a mole ratio of H2: - CO of at least 2.0;
1; and(B) adding the gaseous product stream provided in step (A) to a syngas stream derived from carbonaceous feed material and containing hydrogen and CO, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio higher than that of said syngas stream derived from carbonaceous feed material. - View Dependent Claims (23)
- CO of at least 2.0;
-
24. A method comprising
(A) providing fossil-fuel-based hydrocarbon feed; -
(B) forming from said fossil-fuel-based hydrocarbon feed a gaseous product stream comprising hydrogen and carbon monoxide at a mole ratio of H2;
CO of at least 2.0;
1; and(C) adding the gaseous product stream formed in step (B) to a syngas stream containing hydrogen and CO that is derived from carbonaceous feed material, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio higher than that of said syngas stream derived from carbonaceous feed material. - View Dependent Claims (25)
-
-
26. A method comprising
(A) deriving a syngas stream from carbonaceous feed material, wherein the syngas stream contains hydrogen and CO; - and
(B) adding to the syngas stream derived in step (A) a gaseous product stream comprising hydrogen and carbon monoxide, wherein the mole ratio of H2;
CO of said gaseous product stream is at least 2.0;
1, and wherein said gaseous product stream is formed from fossil-fuel-based hydrocarbon feed,wherein adding said gaseous product stream to said syngas stream forms a mixed syngas stream having a H2;
CO mole ratio higher than that of said syngas stream derived from carbonaceous feed material. - View Dependent Claims (27)
- and
-
28. A method, comprising
(A) providing fossil-fuel hydrocarbon feed; -
(B) forming from said fossil-fuel hydrocarbon feed a gaseous product stream comprising hydrogen and carbon monoxide at a mole ratio of H2;
CO of at least 2.0;
1, and preferably 2.0;
1 to 10;
1;(C) converting up to all of said gaseous product stream to form product fuel and recovering from said converting a byproduct stream comprising one or more of hydrogen, CO, water vapor, methane, and hydrocarbons containing 2 to 8 carbon atoms and 0 to 2 oxygen atoms; and (D) reacting up to 100% of said byproduct stream in said formation of said gaseous product stream in step (B); without adding to said gaseous product stream any other gaseous product derived from carbonaceous feed material; and
thereafter(E) adding to the gaseous product stream formed in step (B) a syngas stream containing hydrogen and CO that is derived from carbonaceous feed material, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio greater than that of said syngas stream derived from carbonaceous feed material;(F) converting said mixed syngas stream to form product fuel and recovering from said converting a byproduct stream comprising one or more of hydrogen, CO, water vapor, methane, and hydrocarbons containing 2 to 8 carbon atoms and 0 to 2 oxygen atoms; and (G) reacting up to 100% of said byproduct stream in said formation of said gaseous product stream in step (B). - View Dependent Claims (29)
(b) forming from said fossil-fuel hydrocarbon feed a gaseous product stream comprising hydrogen and carbon monoxide at a mole ratio of H2;
CO of at least 2.0;
1;(c) adding the gaseous product stream formed in step (b) to a syngas stream containing hydrogen and CO that is derived from carbonaceous feed material, in a sufficient amount to form a mixed syngas stream having a H2;
CO mole ratio greater than that of said syngas stream derived from carbonaceous feed material;(d) converting said mixed syngas stream to form product fuel and recovering from said converting a byproduct stream comprising one or more of hydrogen, CO, water vapor, methane, and hydrocarbons containing 2 to 8 carbon atoms and 0 to 2 oxygen atoms; and (e) reacting up to 100% of said byproduct stream in said formation of said gaseous product stream in step (b).
-
Specification