Process for operating a continuous steam generator

Details Process for operating a continuous steam generator Process for operating a continuous steam generator

2005-07-06

2009-12-01

Wilson, Gregory A (Department: 3749)

Liquid heaters and vaporizers

Automatic control of fluid fuel and water

C122S447000, C060S775000

Reexamination Certificate

active

07624708

ABSTRACT:
The invention relates to a process for operating a continuous steam generator. The aim of the invention is to provide, with little technical complexity and for any operating state, a synchronous variation of the feed-water mass flow passing through the evaporator heating surface and of the heat input into the evaporator heating surface. To this end, a regulating device for the discharge of feed-water is allocated to a device for adjusting the feed-water mass flow. The control variable of said regulating device is the feed-water mass flow, while its set-point value in relation to the feed-water mass flow depends on the set-point value associated to the power of the steam generator. The actual value of the feed-water density at the entry of the pre-heater is fed to the regulating device for the discharge of feed-water as one of the input values.

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