초록

A process for the conversion of biomass to a liquid fuel is presented. The process includes the production of diesel and naphtha boiling point range fuels by hydrocracking of pyrolysis lignin extracted from biomass.

대표청구항 ▼

What is claimed is: 1. A process for producing hydrocarbon products comprising: adding water to a mixture of pyrolysis oil and lignin; separating pyrolysis oil and lignin from the mixture comprising pyrolysis oil and lignin thereby generating a water rich phase stream and a pyrolytic lignin stream;

What is claimed is: 1. A process for producing hydrocarbon products comprising: adding water to a mixture of pyrolysis oil and lignin; separating pyrolysis oil and lignin from the mixture comprising pyrolysis oil and lignin thereby generating a water rich phase stream and a pyrolytic lignin stream; passing the pyrolytic lignin stream to a hydrotreating unit thereby generating a deoxygenated light oil stream, wherein the hydrotreating unit is operated at a pressure in the range from about 5.5 MPa (800 psia) to about 8.3 MPa (1200 psia); passing the deoxygenated light oil stream to a separation unit thereby generating an aqueous stream and an organic stream; passing the organic stream to a hydrocracking unit and reacting the organic stream under mild hydrocracking conditions, thereby generating a product stream comprising hydrocarbon compounds useful for gasoline production or diesel fuel; and passing the water rich phase stream to a reforming unit, thereby generating a hydrogen stream. 2. The process of claim 1 further comprising passing the hydrogen stream to the hydrotreating unit. 3. The process of claim 1 wherein the hydrotreating unit is operated to maximize the decarboxylation of the pyrolytic lignin while minimizing the hydrogen consumption to minimize the hydrodeoxygenation. 4. The process of claim 1 wherein the hydrocracking unit is operated at a pressure between about 3.4 MPa (500 psia) to about 12 MPa (1800 psia). 5. The process of claim 4 wherein the hydrocracking unit is operated at a pressure between about 5.5 MPa (800 psia) to about 8.3 MPa (1200 psia). 6. The process of claim 1 wherein the hydrocracking unit is operated at a temperature between about 260° C. (500° F.) and 455° C. (850° F.). 7. The process of claim 6 wherein the hydrocracking unit is operated at a temperature between about 340° C. (650° F.) and 435° C. (810° F.). 8. The process of claim 1 wherein the hydrocracking unit is operated with a catalyst with a zeolite cracking function. 9. The process of claim 8 wherein the catalyst is a zeolitic and amorphous catalyst. 10. The process of claim 9 wherein the catalyst comprises a metal selected from the group consisting of Ni, Cr, Mo, W, Co, Rh, Ir, Ru, Re and mixtures thereof. 11. The process of claim 10 wherein the catalyst comprises a mixture of Ni and Mo metals. 12. The process of claim 10 wherein the catalyst comprises at least two metals selected from the group consisting of Ni, Cr, Mo, W and mixtures thereof. 13. The process of claim 1 wherein the hydrocracking of the organic stream comprises passing the organic stream over a large pore catalyst. 14. The process of claim 1 further comprising passing the product stream to a reforming unit thereby generating an aromatic rich product stream. 15. A process for producing hydrocarbon products comprising: adding water to a mixture of pyrolysis oil and lignin; separating pyrolysis oil and lignin comprising pyrolysis oil and lignin thereby generating a water rich phase stream and a pyrolytic lignin stream; passing the pyrolytic lignin stream to a hydrotreating unit thereby generating a deoxygenated light oil stream, wherein the hydrotreating unit is operated at a pressure in the range from about 5.5 MPa (800 psia) to about 8.3 MPa (1200 psia); passing the Light oil stream to a hydrocracking unit and reacting the light oil stream under mild hydrocracking conditions, thereby generating a product stream comprising hydrocarbon compounds; and passing the water rich phase stream to a reforming unit, thereby generating a hydrogen stream. 16. The process of claim 1 wherein the deoxygenated light oil stream is drawn off as a vapor from the hydrotreating unit and then passed to the hydrocracking unit.