Smoke recirculation system applying high-temperature efficient cyclone separator

Abstract

The invention discloses a smoke recirculation system applying a high-temperature efficient cyclone separator. The system is characterized by comprising a boiler, the high-temperature efficient cycloneseparator, a circulating fan and a mixing device with a pure oxygen pipeline, which are connected through smoke recirculation pipelines in sequence; a dust removing port of the high-temperature efficient cyclone separator is connected with a cyclone separator ash storage bin; ash separated from an outlet of the ash storage bin enters the boiler through an air blowing effect of the circulating fan; an outlet end of the circulating fan is respectively connected with the mixing device and the cyclone separator ash storage bin; the mixing device communicates with a boiler combustor of the boiler;and the cyclone separator ash storage bin respectively communicates with a hearth of the boiler and a tail flue of the boiler. The system is simple, low in investment and convenient to transform, caneffectively adjust the temperature in the boiler and the dirt slagging degree, reduces the fan wear, and improves the boiler operation economy and safety.

Description

technical field [0001] The invention relates to a flue gas recirculation system using a high-temperature and high-efficiency cyclone separator, belonging to the field of oxygen-enriched combustion of coal-fired boilers. Background technique [0002] Reducing the emission of greenhouse gases is a hot spot in the world today. Among them, reducing carbon dioxide emissions, especially reducing carbon dioxide from coal combustion is a top priority. For this reason, researchers have carried out a lot of research on carbon dioxide capture and storage technology, among which oxygen-enriched combustion is one of the main means and methods in carbon dioxide capture and storage technology. [0003] Oxygen-enriched combustion technology is an efficient energy-saving combustion technology. Refers to the use of high-purity O on the basis of the existing power plant boiler system 2 instead of combustion air. At the same time, flue gas circulation is used to adjust the medium flow rate ...

AI Technical Summary

Problems solved by technology

[0007] Therefore, effective measures must be taken to solve the wear problem of the circulation fan in the flue gas recirculation system in oxyfuel combustion, and at the same time effectively utilize fly ash particles, which have not been solved today

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