Abstract: Process for preparing a hydrocarbon product from a solid carbonaceous fuel (8), the process at least comprising the steps of: (a) supplying a solid carbonaceous fuel (8) and an oxygen containing stream (9) to a burner of a gasification reactor (10), wherein a CO2 containing transport gas (30, 32) is used to transport the solid carbonaceous fuel (8) to the burner wherein the weight ratio of CO2 to the carbonaceous fuel in step (a) is less than 0.5 on dry basis.; (b) partially oxidising the carbonaceous fuel in the gasification reactor, thereby obtaining a gaseous stream at least comprising CO, CO2, and H2 (11); (c) removing the gaseous stream obtained in step (b) from the gasification reactor; (d) optionally shift converting (16) at least part of the gaseous stream as obtained in step (c) thereby obtaining a CO depleted stream, (e) subjecting the gaseous stream of step (c) and/or the optional CO depleted stream of step (d) to a Fischer-Tropsch reaction to obtain a hydrocarbon product (24).

Abstract: The invention relates to a burner, particularly for the gasification of solid carbonaceous materials by partial combustion. The burner comprises a central channel (2) and at least one coaxial channel (6). The channels (2, 6) are defined by concentric walls (3, 5) having free downstream outer ends profiled to define an annular slit (10) forming a discharge end of the coaxial channel (6) and converging towards an adjacent discharge end of the central channel (2). The burner (1) is encased by a cooling jacket (14) and comprises a front face (21) with double walls spaced by one or more baffles (28) defining a coolant flow path operatively connected to the cooling jacket (14). The cooling jacket (14) has an upstream section (14A) and a transitional section (25) narrowing down to the front face (21) having a smaller outer diameter than the upstream cooling jacket section.

Abstract: A spray ring, for wetting char and/or slag in a water bath with a wetting fluid. The spray ring comprises a loop conduit arranged in a loop-line. The loop conduit is at an inlet point provided with an inlet for feeding the wetting fluid into the loop conduit in an inlet flow direction. The loop-line has a plurality of outlet openings for spraying the wetting fluid out of the loop conduit. The inlet flow direction has a component that is tangential to a loop-line flow direction of the wetting fluid through the loop conduit at the inlet point.

Abstract: A spray ring, for wetting char and/or slag in a water bath with a wetting fluid. The spray ring comprises a loop conduit arranged in a loop-line. The loop conduit is at an inlet point provided with an inlet for feeding the wetting fluid into the loop conduit in an inlet flow direction. The loop-line has a plurality of outlet openings for spraying the wetting fluid out of the loop conduit. The inlet flow direction has a component that is tangential to a loop-line flow direction of the wetting fluid through the loop conduit at the inlet point.

Abstract: A gasification reactor comprising a pressure shell, a reaction zone partly bounded by a vertically oriented tubular membrane wall, a horizontally directed burner having a burner head at which, in use, a combustion flame is discharged into said reaction zone, said burner protruding into the vertical wall part of the membrane wall via a burner muffle, said burner muffle comprising several vertically oriented, concentric and interconnected rings, wherein each successive ring has an increasing diameter relative to the preceding ring resulting in that the burner muffle has a muffle opening for the burner head at one end and a larger opening at its other—flame discharge—end, the rings comprising a conduit having an inlet end for a cooling medium and an outlet for used cooling medium and wherein the muffle opening for the burner head is located between the pressure shell and the membrane wall and wherein the burner muffle protrudes into the reaction zone.

Abstract: A spray ring, for wetting char and/or slag in a water bath with a wetting fluid. The spray ring comprises a loop conduit arranged in a loop-line. The loop conduit is at an inlet point provided with an inlet for feeding the wetting fluid into the loop conduit in an inlet flow direction. The loop-line has a plurality of outlet openings for spraying the wetting fluid out of the loop conduit. The inlet flow direction has a component that is tangential to a loop-line flow direction of the wetting fluid through the loop conduit at the inlet point.

Abstract: A system and method for removal of a toxic gas from a powder contaminated with the toxic gas. The system comprises: a source of the contaminated powder; a stripper assembly for stripping at least part of the toxic gas from a batch load of the contaminated powder; connecting means for fluidly connecting the source with the stripper assembly for transporting the contaminated powder from the source to the stripper assembly. The stripper assembly may comprise two or more stripper vessels, and the connecting means is arranged to selectively connect the source to one or more of the stripper vessels. Gravity-driven transport of the contaminated powder from the source of the contaminated powder to the stripper assembly may be established. The source may comprise a gasifier and a depressurising chamber.

Abstract: A gasification reactor comprising a pressure shell, a reaction zone partly bounded by a vertically oriented tubular membrane wall, a horizontally directed burner having a burner head at which, in use, a combustion flame is discharged into said reaction zone, said burner protruding into the vertical wall part of the membrane wall via a burner muffle, said burner muffle comprising several vertically oriented, concentric and interconnected rings, wherein each successive ring has an increasing diameter relative to the preceding ring resulting in that the burner muffle has a muffle opening for the burner head at one end and a larger opening at its other—flame discharge—end, the rings comprising a conduit having an inlet end for a cooling medium and an outlet for used cooling medium and wherein the muffle opening for the burner head is located between the pressure shell and the membrane wall and wherein the burner muffle protrudes into the reaction zone.

Abstract: Process for preparing a hydrocarbon product from a solid carbonaceous fuel (8), the process at least comprising the steps of: (a) supplying a solid carbonaceous fuel (8) and an oxygen containing stream (9) to a burner of a gasification reactor (10), wherein a CO2 containing transport gas (30, 32) is used to transport the solid carbonaceous fuel (8) to the burner wherein the weight ratio of CO2 to the carbonaceous fuel in step (a) is less than 0.5 on dry basis.; (b) partially oxidising the carbonaceous fuel in the gasification reactor, thereby obtaining a gaseous stream at least comprising CO, CO2, and H2 (11); (c) removing the gaseous stream obtained in step (b) from the gasification reactor; (d) optionally shift converting (16) at least part of the gaseous stream as obtained in step (c) thereby obtaining a CO depleted stream, (e) subjecting the gaseous stream of step (c) and/or the optional CO depleted stream of step (d) to a Fischer-Tropsch reaction to obtain a hydrocarbon product (24).

Abstract: Process to remove solid slag particles from a mixture of solid slag particles and water present in a quench zone, which quench zone is part of a process for the preparation of synthesis gas by partial combustion of finely dispersed solid carbon-containing fuel with an oxygen-containing gas, by a) discharging of the mixture from the quench zone to a first vessel, (b) discharging slag particles from the first vessel to a second vessel and discharging water poor in solid slag from a second vessel, which second vessel is located below and fluidly connected to said first vessel by means of an open connecting conduit provided with pumping means and is further provided with closed means to discharge slag from its lower end, (c) fluidly closing the first vessel from the second vessel, (d) opening of the means to discharge slag from the second vessel to remove slag from the second vessel to a lower pressure zone, and (e) closing the means to discharge slag from the second vessel and repeating steps (a) to (e).