Biomass double heat exchange reverse burning hot blast stove

Abstract

The invention discloses a biomass double-heat-exchange reversal burning type hot-air furnace. The biomass double-heat-exchange reversal burning type hot-air furnace is characterized in that a hearth and a burn-out chamber are arranged in a furnace body, a communication opening is formed in a partition wall of the furnace body, a grate is arranged on the lower portion of the hearth, a feed inlet and an air inlet are formed in the top of the hearth, an ash discharge outlet is formed in a side surface of the hearth, a heat exchanger is arranged in the burn-out chamber, a flue gas outlet pipeline of the heat exchanger is communicated with a smoke outlet in a side surface of the burn-out chamber, a cold air inlet is formed in one end of the heat exchanger, a hot air outlet is formed in the other end of the heat exchanger, a heat exchange grate is arranged in the hearth and is positioned above the grate, a hearth burning gasification chamber is formed between the grate and the heat exchange grate, the heat exchange grate comprises an air inlet main pipe and air outlet branch pipes, one end of the air inlet main pipe extends out from a furnace wall of a side surface of the hearth, one end of each air outlet branch pipe is communicated with the air inlet main pipe, the other end of each air outlet branch pipe penetrates the partition wall between the hearth and the burn-out chamber to extend into the burn-out chamber, the air inlet main pipe and the air outlet branch pipes are made of stainless steel materials, and the furnace wall and the partition wall between the hearth and the burn-out chamber are heat-insulation walls constructed from refractory bricks. The biomass double-heat-exchange reversal burning type hot-air furnace has the advantages that heat can be sufficiently utilized, the utilization rate of the hot-air furnace can be increased, a reversal burning effect can be realized by the heat exchange grate, the biomass double-heat-exchange reversal burning type hot-air furnace is beneficial to completely burning biomass fuel, the fuel can be sufficiently utilized, energy can be saved, and environments can be protected.

Description

technical field [0001] The invention belongs to the technical field of biomass burners, and in particular relates to a biomass double heat exchange back-burning hot blast stove. Background technique [0002] The structure design of the existing biomass hot blast stove is unreasonable, and there is a defect that the temperature in the furnace is too high and the heat cannot be fully utilized, resulting in an excessively high temperature at the outlet of the furnace, which in turn causes the temperature of some heat exchangers to be too high, causing high-temperature oxidation and corrosion, making The service life of the heat exchanger is greatly reduced; in addition, because the furnace body is made of steel plate material, the heat conduction is fast and the heat loss is large, so that the heat preservation effect of the whole boiler is not good. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies ...

AI Technical Summary

Problems solved by technology

[0002] The structure design of the existing biomass hot blast stove is unreasonable, and there is a defect that the temperature in the furnace is too high and the heat cannot be fully utilized, resulting in an excessively high temperature at the outlet of the furnace, which in turn causes the temperature of some heat exchangers to be too high, causing high-temperature oxidation and corrosion, making The service life of the heat exchanger is greatly reduced; in addition, because the furnace body is made of steel plate material, the heat conduction is fast and the heat loss is large, which makes the insulation effect of the whole boiler poor.

Images