Nozzle, solid matter unloading device, solid matter unloading system, and solid matter unloading method

A nozzle which is connectable to a conduit for supplying gas to a tubular body filled with granular solid matters, the nozzle comprising:

• a flow path which allows the gas to flow;
• a tip opening portion which is formed on a tip side of the flow path;
• a base end opening portion which is formed on a base end side of the flow path;
• and
• a side hole which is formed on the base end side from the tip opening portion and allows a part of the gas flowing through the flow path to be discharged toward the base end side, wherein
• the one or more tip opening portions are formed in a direction of the flow path,
• the one or more side holes are formed along a circumferential direction of the flow path, and
• when the gas is supplied from the base end opening portion, a ratio (Q1a/Q1b) of a flow rate (Q1a) of the gas discharged from the one or more tip opening portions and a flow rate (Q1b) of the gas discharged from the one or more side holes is 0.05 to 0.7.