Biomass boiler flue gas thermal circulation system

Abstract

The invention discloses a biomass boiler flue gas thermal circulation system. The biomass boiler flue gas thermal circulation system comprises a biomass boiler, a thermal flue channel, and an air pre-heater, the side face of the air pre-heater is connected with a main wind channel, a main air inlet channel communicates with the main wind channel through a main fan and is divided into two pipelineswhich are installed on both sides of the biomass boiler, and each pipeline is connected with at least four air blast air inlet channels in sequence in the axial direction; and the air blast air inletchannels are led to a boiler, one end of a branch wind channel communicates with the main air channel, the other end of the branch wind channel communicates with a branch air inlet channel through abranch fan, the branch air inlet channel is divided into two pipelines which are installed on both sides of the biomass boiler, the back end of each pipeline is connected with upper and lower side airchannels, at least four branch air inlet channels are arranged on each of the upper and lower side air channels in the axial directions of the upper and lower side air channels, and the other end ofthe branch air inlet channel is led to the boiler. The biomass boiler flue gas thermal circulation system is simple in structure and low in cost, the formed thermal cycle can make more efficient use of heat energy, and the economy of the boiler operation is improved.

Description

technical field [0001] The invention belongs to the field of biomass boilers, and in particular relates to a biomass boiler flue gas heat circulation system. Background technique [0002] When the biomass boiler is working normally, in addition to producing slag, it will also produce a large amount of flue gas, which carries a large amount of heat energy. Existing biomass boilers fail to efficiently utilize this heat energy, but instead need to perform multiple processes such as cooling and dust removal of the hot flue gas, resulting in high economic costs and low heat energy utilization. [0003] In the current biomass boiler, in order to improve the burnout efficiency of the fuel in the furnace, a fan is often added to blow cold air directly into the furnace from the outside, but the cold air, especially in winter, will absorb the heat energy in the boiler to a certain extent after entering the boiler, On the contrary, it reduces boiler efficiency and reduces the economy ...

AI Technical Summary

Problems solved by technology

Existing biomass boilers fail to efficiently utilize this heat energy, but instead need to perform multiple processes such as cooling and dust removal on the hot flue gas, resulting in high economic costs and low heat energy utilization

[0003] In the current biomass boiler, in order to improve the burnout efficiency of the fuel in the furnace, a fan is often added to blow cold air directly into the furnace from the outside, but the cold air, especially in winter, will absorb the heat energy in the boiler to a certain extent after entering the boiler. On the contrary, it reduces the boiler efficiency and reduces the economy of boiler operation

Images