| 摘要 |
PROBLEM TO BE SOLVED: To constantly keep steam pressure at an outlet of a steam superheater at a set value, increase generating efficiency and increase power generation and the annual total power generation amount in an urban refuse incineration plant with a steam turbine power generation device even if a steam evaporating amount of a waste heat recovery boiler varies due to a change in refuse quality of urban refuse to be incinerated.SOLUTION: This invention discloses a constitution in which urban refuse of desired refuse quality is incinerated; an inlet steam pressure Pof a preceding pressure controlling type steam turbine is increased by a decremental amount &Dgr;Pof a steam pressure loss &Dgr;P in a main steam pipe passage to attain a steam pressure of P+ &Dgr;P, to keep an outlet steam pressure Pof the steam superheater at a specified pressure, and to operate the steam turbine with a turbine inlet steam pressure of P+ &Dgr;P, in the case that a steam evaporation amount Q is decreased during operation of the urban refuse incineration plant and the steam pressure loss &Dgr;P in the main steam pipe passage is decreased under conditions of the steam evaporation amount Q of the waste heat recovery boiler, an outlet steam pressure Pof the steam superheater and the turbine inlet steam pressure P. |
