CIRCULATING FLUIDISED-BED BOILER (VERSIONS) Russian patent published in 2015 - IPC F23C10/30 

FIELD: power industry.

SUBSTANCE: invention relates to power industry and can be used in circulating fluidised-bed boilers with a heat exchanger located in a heat transfer control bed. A circulating fluidised-bed boiler includes a reaction chamber, a fluidised bed, a heat exchanger in the bed, at least one non-mechanical valve that includes an opening between circulating bed and fluidised bed, and independently adjustable fluidised-bed devices located upstream and downstream of a process flow from the opening. Heat transfer control is performed by control of outlet of solid particles from a fluidised bed to a circulating fluidised bed. Elevation of the lower part of the valve opening in the wall is located at the upper part or above the upper part both of an independently adjustable first fluidised-bed device and an independently adjustable second fluidised-bed device. A flow control barrier can be located downstream of the process flow from the opening.

EFFECT: invention allows controlling outlet of particles in a circulating bed and improves operability and reliability of a boiler.

16 cl, 4 dwg