| 摘要 |
PROBLEM TO BE SOLVED: To secure a prescribed combustion amount or more in a second boiler group 2B regardless of a use steam amount, in a boiler system 1 composed of a boiler 20A and the second boiler group 2B in which a target pressure value P1 of a can pressure value PVof the boiler 20A is set high, a target pressure value P2 of a header pressure value PV of a boiler 20B of the second boiler group 2B is set low, and the target pressure values are independently controlled.SOLUTION: A second boiler group 2B is constituted to output a first steam amount V1 when a necessary steam amount MV calculated by PI or PID algorithm so that a header pressure value PV is agreed with a predetermined second target pressure value P2, is lower than the predetermined first steam amount V1, and output a necessary steam amount MV when the necessary steam amount MV is the first steam amount V1 or more.SELECTED DRAWING: Figure 1 |
