Problem to be solved: to propose a truck capable of carrying out the exchange work of the quantitative feeder in a simple and short time.Solution: a vehicle 50 for replacing a quantitative feeder attached to the bottom of a silo having a supply or the like for supplying a solid fuel or desulfurizing agent to a convervistor of a circulating fluidized bed boiler The support feeder is provided with a lift mechanism for supporting the quantitative feeder while maintaining the posture to be attached to the silo.Diagram
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