FEED WATER CONTROL FOR FORCED THROUGHPUT BY-PRODUCT STEAM GENERATOR

摘要

The invention relates to a method for operating a continuous steam generator designed as a waste heat steam generator with a preheater (1) comprising a number of preheater heating surfaces (2) and with an evaporator (3) comprising a number of evaporator heating surfaces (4) connected downstream of the preheater heating surfaces (2) ), in which a setpoint (Ṁ sub S /sub) for the feedwater mass flow (M) is supplied to a device for setting a feedwater mass flow (M), wherein when the setpoint (Ṁ sub S / sub ) For the feed water mass flow, a waste heat flow transferred to a fluid in the evaporator heating surfaces (4) is determined, mass storage and energy storage in the fluid in the evaporator heating surfaces (4) also being taken into account. The invention also relates to a once-through heat recovery steam generator (11).