Method for operating boiler and boiler equipment

Abstract

This method for operating a boiler includes: a step of acquiring ash content of a plurality of kinds of solid fuels and specific surface areas of the plurality of kinds of solid fuels after incineration; and a step of determining a mixing ratio of the plurality of kinds of solid fuels on the basis of the ash content and the specific surface area after incineration of each of the plurality of kindsof solid fuels acquired in the step of acquiring ash contents and specific surface areas so that the specific surface area after incineration of the entire mixture of the plurality of kinds of solidfuels is less than or equal to a reference value.

Description

technical field [0001] The present invention relates to a boiler operating method and boiler equipment. Background technique [0002] For example, a boiler that burns solid fuel such as coal generally includes, for example, a furnace that burns solid fuel with a burner, and a plurality of heat transfer tubes arranged vertically in the furnace to perform heat exchange. For example, in boilers used in thermal power plants, etc., the above-mentioned heat transfer tubes have a lower heat transfer part for heat exchange in the primary heater, primary reheater and economizer arranged at the lower part of the furnace; The upper heat transfer section for heat exchange in the secondary heater, tertiary heater, final heater and secondary reheater in the upper part of the furnace. [0003] In such boilers, such as pulverized coal boilers using coal as a solid fuel, the ash in the combustion gas generated by the combustion of coal adheres to the furnace wall and heat transfer tubes of ...

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Problems solved by technology

[0006] However, in the above-mentioned conventional boiler operation method, although the adhesion of ash is suppressed, the heat storage rate of the furnace may decrease.

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