Smoke recirculation device for separating primary air and secondary air

Abstract

The invention provides a smoke recirculation device for separating primary air and secondary air. The smoke recirculation device comprises an incinerator, a smoke purification device, a primary fan and a secondary fan. The incinerator is configured to incinerate biomass to generate smoke. The smoke purification device is configured to purify the smoke, and one part of purified smoke discharged bythe smoke purification device serves as recirculation smoke. The primary fan is configured to drain air, so that the air serves as primary air of the incinerator. The secondary fan is configured to drain air and the recirculation smoke, and the air and the recirculation smoke serve as secondary air of the incinerator. According to the provided smoke recirculation device for separating the primaryair and the secondary air, the primary fan drains the air as the primary air, the secondary fan drains the air and the recirculation smoke as the secondary air, thus the flying ash quantity and the flying ash carbon content are lowered, fuel unit consumption is lowered, high-temperature corrosion is reduced, and the combustion condition is optimized.

Description

technical field [0001] The invention relates to the field of biological power generation, in particular to a flue gas recirculation device for separating primary air and secondary air. Background technique [0002] In recent years, biomass energy has been paid more and more attention as a renewable resource. Biomass direct combustion power generation technology is an effective way to utilize biomass energy. Biomass direct combustion power plants can convert biomass energy into usable heat energy And electric energy, to avoid air pollution caused by direct burning of biomass in the open air. [0003] The basic principle of biomass direct combustion power generation is to incinerate biomass at high temperature, and the heat energy generated is converted into high-temperature steam, which drives the steam turbine to rotate, so that the generator generates electricity. In the process of biomass direct combustion power generation, the water-cooled vibrating grate is the carrier ...

AI Technical Summary

Problems solved by technology

However, in actual operation, since the primary air and the secondary air share a blower, the air supply of the primary air and the secondary air interferes with each other, resulting in a low air pressure of the secondary air nozzle, making it difficult to form a better secondary combustion, thus Indirectly, the amount of fly ash is large and the carbon content of fly ash is extremely high. While wasting fuel, it is easy to cause the tailpipe of the boiler to be blocked

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