A gasification burner for a multiple-burner arrangement in an entrained-flow gasifier, in which the gasification burner extends along a main axis and in which the media for the gasification reaction in the gasification burner are guided in separate media channels and exit at the burner mouth in a direction having an angle to the main axis that is not zero. A vertical installation with an optimally adaptable flame shape is provided. Depending on the orientation of the burners, the flame shape is adaptable, whether it be a minimized total flame diameter for an initial slag formation of the cooling screen or an increase in the total twist of the total flame for an increased particle deposition on the reactor wall. The gasification burner with angled burner tips can be used as part of a retrofit.

The invention is directed to a burner for the gasification of a solid fuel, comprising a burner front having an opening for discharging a solid fuel, wherein the opening for discharging the solid fuel is fluidly connected to a central passage way and wherein the central passage way has a downstream part wherein the diameter of the passage way increases over a first length and subsequently decreases over a second length terminating at the burner front and wherein inside the downstream part of the central passage way a hollow member is positioned, and wherein the hollow member has an internal increasing diameter and inner decreasing diameter aligned with the increasing and decreasing diameter of the hollow member and wherein the connecting conduits have a discharge opening positioned in the diverging part of the hollow member.

A burner is described that includes a main longitudinal pipe into which there flows primary transport air loaded with solid particles of a pulverulent fuel, a longitudinal tube arranged inside and concentric to the main pipe, the longitudinal tube extending to the vicinity of a primary transport air outlet end of the main pipe and producing an outer longitudinal passage disposed around and concentric to an inner longitudinal passage, and means for distributing the different concentrations of solid particles in the primary transport air, in the outer longitudinal passage and in the inner longitudinal passage.

Process, reactor and burner for the gasification of a hydrocarbon fuel. The burner comprises coaxial channels for the separate supply of an oxidizer gas, a hydrocarbon fuel and a moderator gas. A coaxial channel with the smallest width is bordered by a separating wall with at least one gas exchange. The gas exchange passage can for example be formed by a retracted end of the separating wall and/or by openings in the separating wall.

An injector mixer for a gasification reactor system that utilizes reactants includes an injector body that extends between a first face and a second face. The injector body includes a first passage that extends between the first face and the second face and has a first central axis. At least one second, impinging passage extends between the first face and second face and has an associated second central axis that has an angle with the first axis. The angle satisfies mixing efficiency Equation (I) disclosed herein.

An apparatus is provided for combining oxygen and fuel to produce a mixture to be burned in a burner. The oxygen-fuel mixture is ignited in a fuel-ignition zone in a flame chamber to produce a flame.

A burner includes: an inner gas nozzle which extends along an axis while surrounding the axis, and which is capable of supplying a furnace with an inner combustion oxygen containing gas; a fuel supply nozzle surrounding the inner gas nozzle as seen in a direction along the axis, the fuel supply nozzle being capable of supplying the furnace with a fluid mixture of a solid powder fuel and a carrier gas; an outer gas nozzle surrounding the fuel supply nozzle as seen in the direction along the axis, the outer gas nozzle being capable of supplying the furnace with an outer combustion oxygen containing gas; and a flow-velocity-ratio adjustment apparatus capable of adjusting a relative flow velocity ratio of a discharge flow velocity of the inner combustion oxygen containing gas to a discharge flow velocity of the outer combustion oxygen containing gas.

The burner preferably exclusively burns substantially explosible solid fuels and preferably has instant ON-OFF thermostat control, wastes no energy preheating the enclosure or external air supply, achieves stable combustion the moment the powder-air mix is ignited in our burner, is used in the upward vertical mode except for oil burner retrofits, burns a solid fuel in a single-phase regime as if it were a vaporized liquid or gas, is designed to complete combustion within the burner housing itself rather than in a large, high temperature furnace enclosure which it feeds, has an ultra-short residence time requirement, is a recycle consuming burner with self-contained management of initially unburned particles, is much smaller, simpler and lower cost, has a wider dynamic range/turndown ratio, is more efficient in combustion completeness and thermal efficiency, and operates with air-fuel mix approximately at the flame speed.

A burner outlet set for a downshot firing burner is described comprising a first outlet array having at least one primary outlet, and at least one vent air outlet disposed either side of the primary outlet in an array direction of the first outlet array; second and third outlet arrays each comprising an array of secondary air outlets, respectively disposed either side of the a first outlet array. A burner system with a plurality of such burner outlet sets, a burner arch configured for downshot firing and having one or more such burner sets, and a combustion furnace with one or more such arches are also described.

The present application provides a tangentially fired boiler. The tangentially fired boiler may include a combustion chamber and an overfire air system positioned about the combustion chamber. The overfire air system may include a number of overfire air windboxes positioned in a horizontal orientation.