Method and apparatus for producing liquid biofuel from solid biomass
AssigneeUpmkymmene Oyj
InventorsPetri Kukkonen, Pekka Knuuttila, Pekka Jokela
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Abstract
The invention relates to a method and apparatus for producing liquid hydro carbonaceous product (1) such as biofuel from solid biomass (2). The method comprises a gasifying step for gasifying solid biomass (2) in a gasifier (6) to produce raw synthesis gas (3), conditioning of the raw synthesis gas (3) to purify the raw synthesis gas (3) to obtain purified synthesis gas (4) having a molar ratio of hydrogen to carbon monoxide between 2.5 to 1 and 0.5 to 1, preferably to between 2.1 to 1 and 1.8 to 1, more preferably about 2 to 1, and subjecting purified synthesis gas (4) to a Fischer-Tropsch synthesis in a Fischer-Tropsch reactor (5) to produce liquid hydro carbonaceous product (1).
Claims33
A method for producing liquid hydro carbonaceous product (1) such as biofuel from solid biomass (2), characterized by the method comprising:
- a gasifying step for gasifying solid biomass (2) in a gasifier (6) to produce raw synthesis gas (3),
- conditioning of the raw synthesis gas (3) to purify the raw synthesis gas (3) to obtain purified synthesis gas (4) having a molar ratio of hydrogen to carbon monoxide between 2.5 to 1 and 0.5 to 1, preferably to between 2.1 to 1 and 1.8 to 1, more preferably about 2 to 1, wherein one of the conditioning steps is a catalytic treatment in a reformer (18) and
- subjecting purified synthesis gas (4) to a Fischer-Tropsch synthesis in a Fischer-Tropsch reactor (5) to produce liquid hydro carbonaceous product (1).
An apparatus for producing liquid hydro carbonaceous product (1) such as biofuel from solid biomass (2), characterized in that the apparatus comprises
- a gasifier (6) for gasifying solid biomass (2) to produce raw synthesis gas (3),
- means for conditioning of the raw synthesis gas (3) comprising catalytic treatment of the raw synthesis gas in a reformer (18) to obtain purified synthesis gas (4) having a molar ratio of hydrogen to carbon monoxide between 2.5 to 1 and 0.5 to 1, preferably to between 2.1 to 1 and 1.8 to 1, more preferably about 2 to 1, and
- a Fischer-Tropsch reactor (5) for subjecting the purified synthesis gas (4) to a Fischer-Tropsch synthesis to produce liquid hydro carbonaceous product (1) of the purified synthesis gas (4).
Dependencies are inferred from the claim text.