Reducing pressure drop buildup in bio-oil hydroprocessing reactors
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-075/00
C10G-003/00
C10L-010/00
C10L-001/02
출원번호
US-0092447
(2016-04-06)
등록번호
US-9523041
(2016-12-20)
발명자
/ 주소
Abhari, Ramin
Havlik, Peter
Tomlinson, H. Lynn
Roth, Gary
Record, Tsungani
출원인 / 주소
REG SYNTHETIC FUELS, LLC
대리인 / 주소
Foley & Lardner LLP
인용정보
피인용 횟수 :
0인용 특허 :
71
초록▼
A method is provided involving reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, where the reactor feed includes a bio-oil feed and a hydrocarbon diluent; and the step of reducing the pressure drop comprises stopping or substanti
A method is provided involving reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, where the reactor feed includes a bio-oil feed and a hydrocarbon diluent; and the step of reducing the pressure drop comprises stopping or substantially reducing the bio-oil feed supplied to the reactor and supplying the hydrocarbon diluent to the reactor with a mass flux of at least about 1,000 lb/hr/ft2.
대표청구항▼
1. A method comprising reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, wherein: the reactor feed comprises a bio-oil feed comprising a lipid, a carboxylic acid, a plant oil, animal fat, algal oil, a distillate from the fermenta
1. A method comprising reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, wherein: the reactor feed comprises a bio-oil feed comprising a lipid, a carboxylic acid, a plant oil, animal fat, algal oil, a distillate from the fermentation of sugars, or a liquid fraction derived from the fast pyrolysis of biomass, or a combination of any two or more thereof; anda hydrocarbon diluent comprising the hydroprocessing product;wherein a volumetric ratio of hydrocarbon diluent to bio-oil feed is from about 1:1 to about 3:1;reducing the pressure drop is performed after a rate of pressure drop increase in the hydroprocessing reactor is about 0.1 psi/hr;reducing the pressure drop comprises stopping the reactor feed to the hydroprocessing reactor and supplying the hydrocarbon diluent at a temperature of about 400° F. to about 800° F. to the hydroprocessing reactor to generate a mass flux of about 2,000 lb/hr/ft2 to about 10,000 lb/hr/ft2; andre-establishing the supply of reactor feed once a decrease in pressure drop is in the range from about 10% to about 99%;wherein the hydrocarbon diluent comprises the hydroprocessing product of the hydroprocessing reactor. 2. The method of claim 1, wherein reducing the pressure drop comprises supplying the hydrocarbon diluent at a temperature of about 400° F. to about 750° F. 3. The method of claim 1, wherein the hydrocarbon diluent has a boiling point of about 300° F. to about 650° F. 4. The method of claim 1, wherein the bio-oil comprises a plant oil, animal fat, an algal oil, or a combination of any two or more thereof. 5. The method of claim 1, wherein the bio-oil comprises a liquid fraction from the fast pyrolysis of biomass. 6. The method of claim 5, wherein the liquid fraction is derived from ground wood, ground switch grass, or combinations thereof. 7. The method of claim 1, wherein the hydroprocessing reactor comprises a graded bed. 8. The method of claim 7, wherein the graded bed comprises high void and high macro-porosity media. 9. The method of claim 7, wherein the graded bed comprises a catalyst comprising Co, Mo, Ni, Pt, Pd, Ru, W, NiMo, NiW, or CoMo. 10. The method of claim 8, wherein the graded bed comprises a catalyst comprising Co, Mo, Ni, Pt, Pd, Ru, W, NiMo, NiW, or CoMo. 11. The method of claim 1, wherein the reactor feed further comprises hydrogen gas. 12. The method of claim 1, wherein reducing pressure drop comprises stopping the reactor feed to the hydroprocessing reactor and supplying hydrogen gas and the hydrocarbon diluent at a temperature of about 400° F. to about 800° F. to the hydroprocessing reactor to generate a mass flux of about 2,000 lb/hr/ft2 to about 10,000 lb/hr/ft2. 13. The method of claim 1, wherein the hydroprocessing reactor performs at least some hydrodeoxygenation. 14. The method of claim 1, wherein the reactor feed is at a temperature from about 550° F. to about 750° F. 15. The method of claim 1, wherein the bio-oil feed is at a temperature of about 100° F. to about 350° F. 16. The method of claim 1, wherein reducing the pressure drop comprises supplying the hydrocarbon diluent at a temperature of about 350° F. to about 750° F. and the hydrocarbon diluent has a boiling point of about 300° F. to about 650° F. 17. The method of claim 1, wherein reducing the pressure drop comprises supplying the hydrocarbon diluent at a temperature of about 600° F. to about 750° F. and the hydrocarbon diluent has a boiling point of about 300° F. to about 650° F. 18. The method of claim 1, wherein reducing the pressure drop comprises re-establishing the supply of reactor feed once the decrease in pressure drop is in the range from about 25% to about 80%. 19. A method comprising reducing a pressure drop across a hydroprocessing reactor having a reactor feed and producing a hydroprocessing product, wherein: the reactor feed comprises a bio-oil feed comprising a lipid, a carboxylic acid, a plant oil, animal fat, algal oil, a distillate from the fermentation of sugars, or a liquid fraction derived from the fast pyrolysis of biomass, or a combination of any two or more thereof;a hydrocarbon diluent comprising the hydroprocessing product; andhydrogen gas;wherein a volumetric ratio of hydrocarbon diluent to bio-oil feed is from about 1:1 to about 3:1;reducing the pressure drop is performed after a rate of pressure drop increase in the hydroprocessing reactor is about 0.1 psi/hr;reducing the pressure drop comprises stopping the reactor feed to the hydroprocessing reactor and supplying hydrogen gas and the hydrocarbon diluent at a temperature of about 600° F. to about 800° F. to the hydroprocessing reactor to generate a mass flux of about 2,000 lb/hr/ft2 to about 10,000 lb/hr/ft2; andre-establishing the supply of reactor feed once a decrease in pressure drop is in the range from about 10% to about 99%;wherein the hydrocarbon diluent comprises the hydroprocessing product of the hydroprocessing reactor. 20. The method of claim 19, wherein reducing the pressure drop comprises stopping the reactor feed to the hydroprocessing reactor and supplying hydrogen gas and the hydrocarbon diluent at a ratio of hydrogen gas to hydrocarbon diluent from about 2,000 SCF/Bbl to about 10,000 SCF/Bbl and at a temperature of about 600° F. to about 800° F. to the hydroprocessing reactor.
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