Two stage process for producing renewable biofuels
AssigneeKiOR, Inc.
InventorsLorenz J. Bauer, Daniel J. Strope, Maria Magdalena Ramirez Corredores
Life of this patent
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Abstract
A process for treating bio-oil or pyrolysis oil used to produce renewable biofuel. In a first stage, solids and/or organic reactive molecules within the feedstream are reduced without substantially deoxygenating the organic reactive molecules in the feedstream. The resulting feedstream is then introduced into a second hydrotreatment stage to produce deoxygenated bio-oil or pyrolysis oil.
Claims58
A process for treating bio-oil or pyrolysis oil used to produce renewable biofuel, the process comprising:
- (a) introducing a feedstream containing bio-oil or pyrolysis oil to a first stage and reducing solids and/or organic reactive molecules within the feedstream in the first stage without substantially deoxygenating the organic reactive molecules in the feedstream;
- (b) introducing the feedstream having reduced solids and/or reduced organic reactive molecules to a second stage, wherein the second stage is a hydrotreatment stage, and further wherein the temperature in the second stage is greater than the temperature in the first stage and the pressure in the first stage is less than or equal to the pressure in the second stage and producing deoxygenated bio-oil or pyrolysis oil in the second stage.
A process for producing renewable biofuel from bio-oil or pyrolysis oil comprising:
- (a) introducing a feedstream containing bio-oil or pyrolysis oil and containing solids and organic reactive materials into a first stage wherein the temperature at the entrance is from about 120° F. to about 350° F.;
- (b) reducing the amount of solids and/or reactive species in the bio-oil or pyrolysis oil without substantially deoxygenating the organic reactive molecules at elevated temperature and pressure in the first stage, wherein the temperature at the entry port of the first stage does not exceed 450° F.;
- (c) introducing the bio-oil or pyrolysis oil having reduced solids into a second stage, wherein the second stage is a hydrotreatment stage, and deoxygenating the bio-oil or pyrolysis oil within the second stage, wherein the temperatures and pressure in the second stage is an amount sufficient to produce a deoxygenated bio-oil or pyrolysis oil;
- and
- (d) producing renewable biofuels from the deoxygenated bio-oil or pyrolysis oil.
A process for producing renewable biofuels from bio-oil or pyrolysis oil comprising:
- (a) reducing solids in the bio-oil or pyrolysis oil in a first stage while minimizing hydrogenation of organic reactive molecules in the bio-oil or pyrolysis oil, wherein:
- (i) the temperature in the first stage at the port of entry is from about 120° F. to about 350° F. and wherein the temperature at the exit port of the first stage does not exceed 450° F.;
- (ii) the pressure in the first stage is less than about 1,000 psig;
- (iii) the space velocity within the first stage is from about 0.2 to about 6;
- and
- (iv) the amount of organic reactive molecules in the first stage is less than 5 percent;
- and
- (b) deoxygenating the product of step (a) in a second stage to render deoxygenated bio-oil or pyrolysis oil, wherein:
- (i) the temperature at the exit port of the second stage is from about 650° F. to about 850° F.;
- (ii) the pressure in the second stage is between from about 500 to about 2,000 psig;
- (iii) the space velocity within the second stage is less than 2;
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- (c) generating renewable biofuels from the deoxygenated product of step (b).
Dependencies are inferred from the claim text.