Process for generating a hydrocarbon feedstock from lignin
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21F-001/66
C10G-001/06
C10L-001/02
D21C-011/00
C10G-003/00
출원번호
US-0039374
(2008-02-28)
등록번호
US-8795472
(2014-08-05)
발명자
/ 주소
Schinski, William Lawrence
Kuperman, Alexander E.
Han, Jinyi
Naae, Douglas Gene
출원인 / 주소
Chevron U.S.A. Inc.
대리인 / 주소
Weksberg, Tiffany E.
인용정보
피인용 횟수 :
0인용 특허 :
16
초록▼
The present invention discloses processes for generating a hydrocarbon feedstock for biofuels synthesis from lignin via hydroprocessing. Embodiments of the present invention can occur in a refinery setting or in a paper mill setting. Embodiments of the present invention can utilize the separated lig
The present invention discloses processes for generating a hydrocarbon feedstock for biofuels synthesis from lignin via hydroprocessing. Embodiments of the present invention can occur in a refinery setting or in a paper mill setting. Embodiments of the present invention can utilize the separated lignin or the entire black liquor solution.
대표청구항▼
1. A papermaking process comprising: hydroprocessing a lignin-containing feedstock to yield a biofuels feedstock, wherein the lignin-containing feedstock comprises spent cooking liquor with caustic salts and lignin, wherein the biofuels feedstock has been reduced in oxygen content and average molecu
1. A papermaking process comprising: hydroprocessing a lignin-containing feedstock to yield a biofuels feedstock, wherein the lignin-containing feedstock comprises spent cooking liquor with caustic salts and lignin, wherein the biofuels feedstock has been reduced in oxygen content and average molecular weight relative to the lignin as a result of hydroprocessing of the lignin contained therein, wherein the hydroprocessing produces water containing the caustic salts separate from the biofuels feedstock, and wherein the spent cooking liquor lignin is not chemically modified prior to hydroprocessing. 2. The papermaking process of claim 1, wherein the hydroprocessing comprises a plurality of hydroprocessing stages. 3. The papermaking process of claim 1, wherein the pulping process comprises a kraft pulping process. 4. The papermaking process of claim 1, wherein the lignin-containing feedstock further comprises one or more components selected from the group consisting of dried biomass, refinery residuals, and combinations thereof. 5. The papermaking process of claim 1, wherein the lignin-containing feedstock further comprises one or more components selected from the group consisting of pyrolysis oil from forestry slash, by-products from cellulosic hydrolysis, by-products from fermentation, and combinations thereof. 6. The papermaking process of claim 1, wherein the hydroprocessing involves a reductive gas selected from the group consisting of hydrogen, carbon monoxide, methanol, and combinations thereof. 7. The papermaking process of claim 1, wherein the hydroprocessing involves a catalyst selected from the group consisting of molybdenum, cobalt, nickel, tungsten, iron, platinum, and combinations thereof on an amorphous or crystalline oxide matrix. 8. The papermaking process of claim 1, further comprising recycling and recovering salt components of the black liquor by recycling the water containing caustic salts to a paper mill as green liquor. 9. A papermaking process comprising: hydroprocessing a lignin-containing feedstock to yield a biofuels feedstock, wherein the lignin-containing feedstock comprises lignin separated from black liquor from a pulping process wherein the lignin is separated from the black liquor from the pulping process by gaseous carbon dioxide (CO2) injection and refinery residuals, and wherein the biofuels feedstock has been reduced in oxygen content and average molecular weight relative to the lignin as a result of hydroprocessing of the lignin contained therein, and wherein the separated lignin is not chemically modified prior to hydroprocessing. 10. The papermaking process of claim 9, wherein the pulping process comprises a kraft pulping process. 11. The papermaking process of claim 9, wherein the lignin-containing feedstock further dried biomass. 12. The papermaking process of claim 9, wherein the lignin-containing feedstock further comprises one or more components selected from the group consisting of pyrolysis oil from forestry slash, by-products from cellulosic hydrolysis, by-products from fermentation, and combinations thereof. 13. The papermaking process of claim 9, wherein the hydroprocessing involves a reductive gas selected from the group consisting of hydrogen, carbon monoxide, methanol, and combinations thereof. 14. The papermaking process of claim 9, wherein the hydroprocessing involves a catalyst selected from the group consisting of molybdenum, cobalt, nickel, tungsten, iron, platinum, and combinations thereof on an amorphous or crystalline oxide matrix. 15. The papermaking process of claim 9, further comprising recycling and recovering salt components of the black liquor. 16. The papermaking process of claim 1, wherein the hydroprocessing involves syngas as a reductant. 17. The papermaking process of claim 1, further comprising recycling and recovering salt components of the black liquor by sending the water containing caustic salts to a boiler to reduce organic components and reject dissolved carbon dioxide. 18. The papermaking process of claim 9, wherein the hydroprocessing involves syngas as a reductant. 19. A method of producing a reduced oxygen content biofuel feedstock from black liquor comprising: receiving black liquor comprising unmodified lignin and inorganic salts;separating the lignin from the inorganic salts;hydroprocessing the separated lignin in a hydroprocessor to yield a reduced oxygen content biofuel feedstock, wherein the separated lignin is not chemically modified prior to hydroprocessing; andintroducing the biofuel feedstock into a refinery for biofuels synthesis, wherein the biofuels feedstock is introduced into the refinery in combination with other refinery streams. 20. The method of claim 19, further comprising recycling the inorganic salts separated from the lignin. 21. The method of claim 19, wherein hydroprocessing comprises coprocessing the separated lignin with refinery residuals. 22. The method of claim 19, wherein separating the lignin from the inorganic salts comprises gaseous CO2 injection. 23. The method of claim 19, wherein the reduced oxygen content biofuel comprises oxygenated hydrocarbons.
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이 특허에 인용된 특허 (16)
Avedesian Michael M. (Beaconsfield CAX), Apparatus and method involving supercritical fluid extraction.
Naae Douglas Gene ; Whittington Lawrence Edward ; Kieke Dan Edward, Catalytic method for the preparation of lignin phenol surfactants in organic solvents.
Naae Douglas Gene ; Whittington Lawrence Edward ; Kieke Dan Edward, Catalytic method for the preparation of lignin phenol surfactants in organic solvents.
Naae Douglas G. (Houston TX) DaGue Michael G. (Houston TX) Dunn Nancy G. (Houston TX), Hydrocarbon recovery comprising injecting a slug comprising oil soluble alkoxylated surfactants from lignin.
Naae Douglas G. (Houston TX) Whittington Lawrence E. (Katy TX) Ledoux Will A. (Sugar Lane TX) Debons Francis E. (Richmond TX), Recovering hydrocarbons with surfactants from lignin.
Naae Douglas G. (Houston TX) Whittington Lawrence E. (Katy TX) Ledoux Will A. (Sugar Lane TX) Debons Francis E. (Richmond TX), Surfactants from lignin.
El-Shall, Hassan E.; Abdel-Aal, El-Sayed A., Treatment of spent pulping liquor with lignin separation to recover alkali pulping chemicals in manufacture of paper pulp.
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