Circulating air path device of biomass boiler

Abstract

The invention relates to a biomass boiler system, and particularly relates to a circulating air path device of a biomass boiler. The circulating air path device of the biomass boiler comprises a boiler body, a combustion chamber, a moving grate, a feeding device, a boiler barrel, a first air inlet chamber, a second air inlet chamber and a smoke outlet, wherein the second air inlet chamber is arranged below a discharge port of the feeding device, the smoke outlet is formed in the combustion chamber, a smoke pipeline is connected to the smoke outlet, the other end of the smoke pipeline is connected to an inlet of a dust remover, an outlet of the dust remover is connected to the feeding device through a pipeline so as to dry materials, an air preheater which is used for preheating air by using smoke in the pipeline is arranged on the smoke pipeline, an inlet of the air preheater is connected with a first blower, an outlet of the air preheater is connected with the first air inlet chamber through a pipeline, and the second air inlet chamber is connected with a second blower through a pipeline. The circulating air path device has the advantage of simple structure, and the utilization rate of energy is effectively increased; additionally, the circulating air path device has an ideal dust removal effect, the energy is recycled, and the cost is reduced.

Description

technical field [0001] The invention relates to a biomass boiler system, in particular to a circulation air path device of a biomass boiler. Background technique [0002] With the development of society, human beings demand more and more energy, but the reserves of conventional energy such as coal and oil are limited, and the use of these energy sources will cause various environmental problems. For this reason, people began to develop renewable and non-polluting biomass energy, which is matched with biomass boilers. At present, the thermal efficiency of biomass boilers is only about 80%, and the energy utilization rate is low. At the same time, the exhaust gas temperature of existing biomass boilers is generally 180 ° C ~ 150 ° C, and this part of the flue gas energy can account for 7 ~ 7% of the total energy of the boiler fuel. 9%, this part of the heat energy of the flue gas is discharged into the atmosphere, which causes a great waste of energy and also causes thermal p...

AI Technical Summary

Problems solved by technology

At present, the thermal efficiency of biomass boilers is only about 80%, and the energy utilization rate is low. At the same time, the exhaust gas temperature of existing biomass boilers is generally 180 ° C ~ 150 ° C, and this part of the flue gas energy can account for 7 ~ 7% of the total energy of the boiler fuel. 9%, this part of the heat energy of the flue gas is discharged into the atmosphere, causing a great waste of energy, and also causing heat pollution to the surrounding environment

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