Combined first and second generation biofuels process
First Claim
1. An integrated process for producing biofuels from a biofuel feedstock, comprising a cellulosic component and a starch component, the process comprising:
- introducing the cellulosic component and a hydrogen stream generated by a hydrogen production unit, into a first biofuels process,introducing the starch component and a steam stream into a second biofuels process,introducing a char stream generated by a pyrolysis of the first biofuels process; and
a hydrocarbon stream generated by a low pressure hydrotreating component into the hydrogen production unit.
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Accused Products
Abstract
A process to integrate a first biofuels process and a second generation cellulosic biofuels process is provided. The pyrolysis means which produces the char stream and a bioliquid stream. The low pressure hydrotreating component, a high pressure hydrotreating component, the low pressure hydrotreating component which produces the hydrocarbon stream, the high pressure hydrotreating component which produces the steam stream and bioliquid stream. A distillation means, which produces a green gasoline stream and a green diesel stream from the bioliquid stream. The second biofuels process may be a first generation bio-ethanol process, which produces a bio-ethanol stream. The hydrogen production unit, which produces the hydrogen stream and the steam stream. The hydrogen production unit may be a steam reformer or partial oxidation unit.
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Citations
22 Claims
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1. An integrated process for producing biofuels from a biofuel feedstock, comprising a cellulosic component and a starch component, the process comprising:
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introducing the cellulosic component and a hydrogen stream generated by a hydrogen production unit, into a first biofuels process, introducing the starch component and a steam stream into a second biofuels process, introducing a char stream generated by a pyrolysis of the first biofuels process; and
a hydrocarbon stream generated by a low pressure hydrotreating component into the hydrogen production unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A biofuels production process, comprising:
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providing a biofuel feedstock, comprising a cellulosic component and a starch component, separating the cellulosic component from the starch component, introducing the cellulosic component to a pyrolysis process, thereby producing at least a char stream and a bio-oil stream, introducing the bio-oil stream and a purge hydrogen stream into a low pressure hydrotreating process, thereby producing a first intermediate liquid stream, and a hydrocarbon stream, introducing the first intermediate liquid stream and a hydrogen stream into a high pressure hydrotreating process, thereby producing a second intermediate liquid stream, the purge hydrogen stream, and the steam stream, introducing the second intermediate liquid stream to a distillation column, thereby producing a product green gasoline stream and a product green diesel stream, introducing the char stream, the hydrocarbon stream, into a hydrogen production unit, thereby producing the hydrogen stream, and a second steam stream, combining the steam stream and the second steam stream to form combined steam stream, introducing the starch component, and the combined steam stream into an ethanol plant, thereby producing a bio-ethanol stream.
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Specification