Methods for hydrothermal digestion of cellulosic biomass solids in the presence of a slurry catalyst and a digestible filter aid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-027/00
C07C-029/132
C13K-001/02
D21C-003/22
C10L-001/02
C10L-009/08
C10G-003/00
출원번호
US-0928877
(2013-06-27)
등록번호
US-9174898
(2015-11-03)
발명자
/ 주소
Komplin, Glenn Charles
Powell, Joseph Broun
출원인 / 주소
Shell Oil Company
인용정보
피인용 횟수 :
2인용 특허 :
4
초록▼
Digesting cellulosic biomass in the presence of a slurry catalyst may reduce degradation product formation, but catalyst distribution and retention can be problematic. Digestion methods can comprise: providing cellulosic biomass solids and a slurry catalyst capable of activating molecular hydrogen i
Digesting cellulosic biomass in the presence of a slurry catalyst may reduce degradation product formation, but catalyst distribution and retention can be problematic. Digestion methods can comprise: providing cellulosic biomass solids and a slurry catalyst capable of activating molecular hydrogen in a digestion unit; providing a digestible filter aid in the digestion unit; distributing the slurry catalyst within the cellulosic biomass solids using fluid flow; retaining at least a portion of the slurry catalyst in a fixed location using the digestible filter aid; heating the cellulosic biomass solids in the presence of the slurry catalyst, a digestion solvent, and molecular hydrogen, thereby forming a liquor phase comprising soluble carbohydrates; and performing a catalytic reduction reaction on the soluble carbohydrates within the digestion unit, thereby at least partially forming a reaction product comprising a triol, a diol, a monohydric alcohol, or any combination thereof in the digestion unit.
대표청구항▼
1. A method comprising: providing cellulosic biomass solids and a slurry catalyst in a hydrothermal digestion unit, the slurry catalyst being capable of activating molecular hydrogen;providing a digestible filter aid in the hydrothermal digestion unit;heating the cellulosic biomass solids in the hyd
1. A method comprising: providing cellulosic biomass solids and a slurry catalyst in a hydrothermal digestion unit, the slurry catalyst being capable of activating molecular hydrogen;providing a digestible filter aid in the hydrothermal digestion unit;heating the cellulosic biomass solids in the hydrothermal digestion unit in the presence of the slurry catalyst, a digestion solvent, and molecular hydrogen, thereby forming a liquor phase comprising soluble carbohydrates; andperforming a first catalytic reduction reaction on the soluble carbohydrates within the hydrothermal digestion unit, thereby at least partially forming a reaction product comprising a triol, a diol, a monohydric alcohol, or any combination thereof in the hydrothermal digestion unit;forming a filter cake comprising a digestible filter aid on a solids retention mechanism configured to allow the liquor phase to pass therethrough;collecting at least a portion of the slurry catalyst on the filter cake. 2. The method of claim 1, wherein the solids retention mechanism comprises a filter that is within the hydrothermal digestion unit. 3. The method of claim 1, wherein the solids retention mechanism comprises a filter that is external to the hydrothermal digestion unit. 4. The method of claim 1, further comprising: removing the filter cake from the solids retention mechanism; andreturning at least a portion of the filter cake comprising the slurry catalyst to the cellulosic biomass solids. 5. The method of claim 1, wherein at least a portion of the digestible filter aid is distributed in the cellulosic biomass solids and promotes retention of the slurry catalyst therein. 6. The method of claim 1, further comprising: performing a second catalytic reduction reaction on the liquor phase that has exited the hydrothermal digestion unit so as to further form the reaction product. 7. The method of claim 1, further comprising: dissolving at least a portion of the digestible filter aid while forming fresh digestible filter aid, the fresh digestible filter aid comprising cellulosic biomass particulates with a particulate size of at most about 3 mm that are formed by heating the cellulosic biomass solids in the presence of the digestion solvent. 8. The method of claim 1, wherein the digestible filter aid comprises cellulosic biomass particulates with a particulate size of at most about 3 mm. 9. The method of claim 1, wherein the slurry catalyst is provided in the hydrothermal digestion unit before the cellulosic biomass solids are provided. 10. The method of claim 1, wherein providing the digestible filter aid in the hydrothermal digestion unit comprises adding the digestible filter aid to the hydrothermal digestion unit. 11. The method of claim 10, wherein the digestible filter aid is added to the hydrothermal digestion unit with the cellulosic biomass solids. 12. The method of claim 1, wherein providing the digestible filter aid comprises forming the digestible filter aid in the hydrothermal digestion unit by heating the cellulosic biomass solids in the presence of the digestion solvent. 13. The method of claim 12, further comprising: adding an additional quantity of the digestible filter aid to the hydrothermal digestion unit while the digestible filter aid is being formed therein. 14. The method of claim 12, wherein the digestible filter aid comprises cellulosic biomass particulates with a particulate size of at most about 3 mm that are formed by heating the cellulosic biomass solids in the presence of the digestion solvent. 15. The method of claim 1, wherein the slurry catalyst is distributed in the cellulosic biomass solids using upwardly directed fluid flow. 16. The method of claim 15, wherein the upwardly directed fluid flow comprises one or more upwardly directed fluid streams, the one or more upwardly directed fluid streams comprising a gas stream, a liquid stream, or any combination thereof. 17. The method of claim 1, wherein the digestion solvent comprises the reaction product. 18. The method of claim 1, further comprising: converting the reaction product into a biofuel. 19. The method of claim 1, wherein the slurry catalyst comprises a poison-tolerant catalyst. 20. A method comprising: providing cellulosic biomass solids and a slurry catalyst in a hydrothermal digestion unit, the slurry catalyst being capable of activating molecular hydrogen and the cellulosic biomass solids comprising a digestible filter aid comprising cellulosic biomass particulates capable of forming a filter cake suitable for retaining at least a portion of the slurry catalyst thereon;heating the cellulosic biomass solids in the hydrothermal digestion unit in the presence of the slurry catalyst, a digestion solvent, and molecular hydrogen, thereby forming a liquor phase comprising soluble carbohydrates;allowing a portion of the liquor phase to exit the hydrothermal digestion unit;forming a filter cake comprising the digestible filter aid on a solids retention mechanism configured to allow the liquor phase to pass therethrough;collecting at least a portion of the slurry catalyst on the filter cake; andperforming a first catalytic reduction reaction on the soluble carbohydrates in the hydrothermal digestion unit, thereby at least partially forming a reaction product comprising a triol, a diol, a monohydric alcohol, or any combination thereof in the hydrothermal digestion unit. 21. The method of claim 20, wherein the solids retention mechanism comprises a filter that is within the hydrothermal digestion unit. 22. The method of claim 20, wherein the solids retention mechanism comprises a filter that is external to the hydrothermal digestion unit. 23. The method of claim 20, further comprising: removing the filter cake from the solids retention mechanism; andreturning at least a portion of the filter cake comprising the slurry catalyst to the cellulosic biomass solids. 24. The method of claim 20, wherein at least a portion of the digestible filter aid is distributed in the cellulosic biomass solids and promotes retention of the slurry catalyst therein. 25. The method of claim 20, further comprising: performing a second catalytic reduction reaction on the liquor phase that has exited the hydrothermal digestion unit so as to further form the reaction product. 26. The method of claim 20, wherein the cellulosic biomass particulates have a particulate size of at most about 3 mm. 27. The method of claim 20, wherein the digestible filter aid is added to the hydrothermal digestion unit. 28. The method of claim 27, wherein the digestible filter aid is mixed with the cellulosic biomass solids before the cellulosic biomass solids are provided in the hydrothermal digestion unit. 29. The method of claim 20, wherein the digestible filter aid is formed in the hydrothermal digestion unit by heating the cellulosic biomass solids in the presence of the digestion solvent. 30. The method of claim 29, further comprising: adding an additional quantity of the digestible filter aid to the hydrothermal digestion unit while the digestible filter aid is being formed therein. 31. The method of claim 20, wherein the upwardly directed fluid flow comprises one or more upwardly directed fluid streams, the one or more upwardly directed fluid streams comprising a gas stream, a liquid stream, or any combination thereof. 32. The method of claim 20, further comprising: dissolving at least a portion of the digestible filter aid while forming fresh digestible filter aid, the fresh digestible filter aid comprising cellulosic biomass particulates with a particulate size of at most about 3 mm that are formed by heating the cellulosic biomass solids in the presence of the digestion solvent. 33. The method of claim 20, wherein the slurry catalyst is provided in the hydrothermal digestion unit before the cellulosic biomass solids are provided. 34. The method of claim 20, wherein the digestion solvent comprises the reaction product. 35. The method of claim 20, further comprising: converting the reaction product into a biofuel. 36. The method of claim 20, wherein the slurry catalyst comprises a poison-tolerant catalyst.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Engstrom Johan,SEX ; Snekkenes Vidar,SEX ; Olsson Krister,SEX ; Gustavsson Soren,SEX ; Lindgren Christofer,SEX ; Lindstrom Mikael,SEX, Method for the continuous cooking of pulp.
de Boer Mark,NLX ; Sonnemans Johannes Wilhelmus Maria,NLX ; Desai Pankaj Himatlal ; Enters Jaap, Process for preparing a hydroprocessing catalyst from waste hydroprocessing catalyst.
Powell, Joseph Broun; Komplin, Glenn Charles; Smegal, John Anthony; Johnson, Kimberly Ann, Hydrothermal hydrocatalytic treatment of biomass using water tolerant catalysts.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.