Fluidizing nozzle and fluidized bed reactor

A fluidized bed reactor, comprising

• a bed floor having an upper material carrying surface and a lower surface,
• a plurality of fluidizing nozzles projecting through the bed floor, and
• a fluid distribution arrangement provided with a plurality of fluid outlet means,
• wherein each fluid outlet means of the fluid distribution arrangement is in fluid connection with one fluidizing nozzle of said plurality of fluidizing nozzles,
• wherein the fluid distribution arrangement is arranged at a level below the bed floor, and
• wherein each fluidizing nozzle of said plurality of fluidizing nozzles comprise
• a nozzle tube having an upstream inlet end connected to one fluid outlet means of said plurality of fluid outlet means, wherein the nozzle tube limiting at least a part of a feed channel in which fluid is configured to flow,
• at least one fluid discharge opening arranged near a downstream end of the nozzle tube for discharging fluid from the nozzle tube to the surroundings, and
• a pot-like hood, which sealingly closes the nozzle tube with a hood cover at the downstream end of the nozzle tube at which said at least one fluid discharge opening is provided, wherein the pot-like hood includes a hood apron connected with the hood cover, which hood apron surrounding a part of the nozzle tube by forming an annular cap extending from the downstream end of the nozzle tube at which said at least one fluid discharge opening is provided,
• wherein each nozzle tube of each fluidizing nozzle together with one fluid outlet means of the fluid distribution arrangement to which the nozzle tube is connected defining the feed channel in which fluid is configured to flow, and
• wherein each feed channel being provided with a flow restriction element defining at least one flow restriction feed channel upstream of said at least one fluid discharge opening of the fluidizing nozzle,
• wherein
• the flow restriction element defining only one flow restriction feed channel, and by said only one flow restriction feed channel being in the form of a sonic nozzle.