Straw bundle burning direct-fired biomass boiler with in-boiler drying function

Abstract

The invention discloses a straw bundle burning direct-fired biomass boiler with an in-boiler drying function. The straw bundle burning direct-fired biomass boiler comprises a drying roller assembly, a bag breaking roller assembly and a material stirring roller assembly. The drying roller assembly is located in a drying chamber on the inner side of a feeding port of the boiler and comprises one or two drying roller main shaft pipes. A water cooling channel is arranged in each drying roller main shaft pipe, and a plurality of hollow drying thorns are evenly distributed on the annular outer wall of each drying roller main shaft pipe. Cooling water passes through the water cooling channel of the drying roller main shaft pipe and then enters the drying thorns; the bag breaking roller assembly is located in a hearth of the boiler and comprises one or two rotatable bag breaking roller main shaft pipes. The material stirring roller assembly is located in a hearth of the boiler and comprises one or two rotatable material stirring roller main shaft pipes. The drying roller main shaft pipe, the bag breaking roller main shaft pipe and the material stirring roller main shaft pipe are the same in structure. According to the biomass boiler, straw bundles can be fully combusted in the boiler, the temperature rise of the boiler is fast, and the heat efficiency is high; the service life of the boiler is long, and the replacement and maintenance cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of straw bale burning, in particular to a straw bale burning direct combustion biomass boiler with oven drying. Background technique [0002] At present, there is a problem that the straw bales cannot be fully burned in the existing direct-fired biomass boilers. The reason is that the straw bales are naturally burned by the blower in the existing boiler, which not only has a slow combustion speed, but also does not burn completely. ; In addition, if the moisture in the straw seriously exceeds the standard, the straw cannot be burnt out in the furnace, resulting in the disadvantages of slow heating and low thermal efficiency in the existing straw bales burning biomass boilers. In the boiler, due to the high bundling temperature, the broken bag and material removal components in the boiler work in a high temperature environment for a long time, and the broken bag and material removal needle have a short servic...

AI Technical Summary

Problems solved by technology

[0002] At present, there is a problem that the straw bales cannot be fully burned in the existing direct-fired biomass boilers. The reason is that the straw bales are naturally burned by the blower in the existing boiler, not only the burning speed is slow, but also the combustion is not complete. In addition, if the moisture in the straw seriously exceeds the standard, the straw cannot be burned out in the furnace, which leads to the disadvantages of slow temperature rise and low thermal efficiency in the existing straw-bundled direct-fired biomass boilers; in addition, the existing straw-bundled burning Due to the high temperature of bundling and firing in the boiler, the bag breaking and material pulling components in the boiler work in a high temperature environment for a long time, and the bag breaking needles and material pulling components have a short service life. to higher cost

[0003] Therefore, how to solve the technical shortcomings of the existing straw bundle burning direct-fired boilers and provide a boiler that can fully burn out and have a long service life is a problem that those skilled in the art need to solve urgently.

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