System and method for achieving flexible operation of circulating fluidized bed boiler based on acoustic wave technology

Abstract

The invention provides a system and method for achieving flexible operation of a circulating fluidized bed boiler based on the acoustic wave technology. The system comprises the circulating fluidizedbed boiler and an acoustic wave emission device, wherein the circulating fluidized bed boiler comprises a limestone powder feeding device, a coal feeding device, a furnace, a horizontal flue, a central cylinder, a separator, a return feeder and a tail flue; and the acoustic wave emission device comprises a loudspeaker, a compression drive device and a remote control device. By means of the systemand method for achieving flexible operation of the circulating fluidized bed boiler based on the acoustic wave technology, the particle size distribution of flue gas and dust can be flexibly changed,and the circulation ratio of materials is increased through acoustic wave agglomeration effect, so that the system and the method are directly beneficial to improving the combustion efficiency of theboiler and reducing the combustible index of fly ash, and economic benefits are generated; and the system and the method are indirectly beneficial to low nitrogen combustion and reducing the emissionconcentration of SO2, NOX and other pollution gases in the boiler, so that environmental benefits are generated.

Description

technical field [0001] The invention relates to the field of circulating fluidized bed boiler power generation, in particular to a system and method for realizing flexible operation of a circulating fluidized bed boiler based on sound wave technology. Background technique [0002] Today's environmental situation is becoming increasingly tense, extreme weather such as smog and coal rain emerges one after another, energy conservation and emission reduction standards for various industries are increasing, and coal consumption and pollutant emissions for power generation in the thermal power industry are the top priorities. At the same time, with the large-scale promotion of renewable energy power generation technologies such as wind power and photovoltaic power generation, the phenomena of "abandoning wind" and "abandoning light" are emerging one after another across the country, especially during the winter heating period, when thermal power units with a high proportion of inst...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a system and method for realizing the flexible operation of circulating fluidized bed boilers based on sound wave technology, which solves the problem that the material circulation adjustment method in existing circulating fluidized bed boilers has a single means and it is difficult to realize flexible operation Defects

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