Abstract: A reactor for producing a synthesis gas from a fuel, with a housing (2) with a combustion part accommodating a first fluidized bed in operation, a riser (3) extending along a longitudinal direction of the reactor (1) and accommodating a second fluidized bed in operation, a down-comer (4) positioned parallel to the riser and extending into the first fluidized bed, and one or more feed channels (33) for providing the fuel to the reactor (1). The reactor (1) further has a riser air chamber section (B) connected to a lower part of the riser (3), the riser air chamber section (B) comprising a cylindrical wall (28) with a plurality of circumferentially located holes (24, 25).

Abstract: A reactor for producing a synthesis gas from a fuel, with a housing (2) with a combustion part accommodating a first fluidized bed in operation, a riser (3) extending along a longitudinal direction of the reactor (1) and accommodating a second fluidized bed in operation, a down-comer (4) positioned parallel to the riser and extending into the first fluidized bed, and one or more feed channels (33) for providing the fuel to the reactor (1). The reactor (1) further has a riser air chamber section (B) connected to a lower part of the riser (3), the riser air chamber section (B) comprising a cylindrical wall (28) with a plurality of circumferentially located holes (24, 25).

Abstract: The present invention relates to a method for treating synthesis gas, from an indirect or direct gasifier; the method including steps for: allowing the gas within a predetermined entry temperature range to flow into a first heat exchanger, allowing the gas to flow through the first heat exchanger while exchanging heat to a first medium, allowing the gas to transfer from the first heat exchanger to a subsequent last heat exchanger, allowing the gas to flow though the last heat exchanger while exchanging heat to a last medium, and allowing the gas to exit the last heat exchanger for being available to a further treatment, such as a cleaning treatment, within a predetermined exit temperature range, preferably below an ash or mineral solidification point. Furthermore, the present invention relates to a cooling system for cooling of synthesis gas and to a gasification system.

Abstract: The present invention relates to a method for treating synthesis gas, from an indirect or direct gasifier; the method including steps for: allowing the gas within a predetermined entry temperature range to flow into a first heat exchanger, allowing the gas to flow through the first heat exchanger while exchanging heat to a first medium, allowing the gas to transfer from the first heat exchanger to a subsequent last heat exchanger, allowing the gas to flow though the last heat exchanger while exchanging heat to a last medium, and allowing the gas to exit the last heat exchanger for being available to a further treatment, such as a cleaning treatment, within a predetermined exit temperature range, preferably below an ash or mineral solidification point. Furthermore, the present invention relates to a cooling system for cooling of synthesis gas and to a gasification system.

Abstract: Reactor for producing a product gas from a fuel having a housing (11, 12, 13) with a combustion part accommodating a fluidized bed (7) in operation, a riser (2) extending along a longitudinal direction of the reactor (1), and a downcomer (3) positioned coaxially around the riser (2) and extending into the fluidized bed (7). One or more feed channels (8) for providing the fuel to the riser (2) are provided. The riser (2) is attached to the housing (11, 12, 13) of the reactor (1) in a bottom part (13) of the housing (11, 12, 13), and a part of the riser (2) above the one or more feed channels (8) is moveable with respect to the downcomer (3) in the longitudinal direction of the reactor (1).

Abstract: Reactor for producing a product gas from a fuel having a housing (11, 12, 13) with a combustion part accommodating a fluidized bed (7) in operation, a riser (2) extending along a longitudinal direction of the reactor (1), and a downcomer (3) positioned coaxially around the riser (2) and extending into the fluidized bed (7). One or more feed channels (8) for providing the fuel to the riser (2) are provided. The riser (2) is attached to the housing (11, 12, 13) of the reactor (1) in a bottom part (13) of the housing (11, 12, 13), and a part of the riser (2) above the one or more feed channels (8) is moveable with respect to the downcomer (3) in the longitudinal direction of the reactor (1).

Abstract: A method for torrefaction of biomass using a torrefaction reactor vessel having stacked trays including: feeding the biomass to an upper inlet of the vessel; cascading the biomass down through the trays by passing the biomass through an opening in each of the trays to deposit the biomass on a lower tray; heating the biomass material with an oxygen deprived gas; extracting moisture from below each of the upper trays; as the biomass undergoes torrefaction in the lower trays retaining the gas with the biomass until the biomass falls from the stacked trays to a pile of biomass in the reactor vessel; exhausting gases containing organic compounds through a gas outlet at an elevation between the stacked trays and the pile of biomass, and discharging torrefied biomass from the torrefaction reactor vessel.