FIELD: machine building.
SUBSTANCE: procedure for operation of steam-turbine plant consists of at least one steam generator heated with solid granulated fuel, for example, brown coal. Also, fuel is preliminary subjected to drying with indirect heating in a dryer with a fluidisated layer. The dryer with a fluidisated layer at least partially is heated with steam from a steam-water circuit of the steam generator. Temperature control in the dryer is performed in two stages depending on contents of moisture in fuel. Initially, temperature of the dryer with a fluidisated layer is controlled by means of pressure of steam for heating; after this regulation there is controlled temperature of superheat of steam for heating depending on steam pressure. The device for steam generation consists of at least one steam turbine with the generator connected after the steam generator. The dryer consists of at least one heat exchanger whereto there is supplied steam for heating and which is connected to the steam water circuit of the steam generator. At least one additional turbine is arranged before the heat exchanger for control of dryer temperature.
EFFECT: raised efficiency of drying.
25 cl, 1 dwg
