Smokeless combustion method of reverse combustion, roasting combustion and recombustion

Abstract

The invention belongs to the field of solid fuel combustion, and particularly relates to a smokeless combustion method of reverse combustion, roasting combustion and recombustion. The smokeless combustion method is suitable for all solid fuel combustion furnaces, such as the smokeless discharging of steam furnaces, heat conducting oil furnaces and the like. According to the smokeless combustion method of the reverse combustion, the roasting combustion and the recombustion, three combustion chambers arranged in a furnace body, three layers of grates separating the three combustion chambers, anash collecting chamber on the bottom layer, an air leading opening formed in the third combustion chamber and a high-power draught fan arranged in the leading opening are included; biomass materials are added into the first combustion chamber to form the reverse combustion; clean energy (coke or charcoal) is added into a roasting combustion layer of the second combustion chamber to form the roasting combustion; and the coke and the charcoal fall to the lower layer grate of the third combustion chamber to form the recombustion, and formed furnace ashes fall into the ash collecting chamber. According to the smokeless combustion method of the reverse combustion, the roasting combustion and the recombustion, a traditional combustion method is subverted, and black smoke and exhaust gas are notgenerated.

Description

technical field [0001] The invention relates to the field of boiler combustion, in particular to a combustion method for back-burning, roasting and re-burning. Background technique [0002] The previous small vertical boilers used the original direct combustion, and the volatiles, free carbon black, and hot gas produced by thermal decomposition of the fuel above the fire were directly discharged from the flue and produced a large amount of black smoke, which polluted the environment and wasted resources. ;In recent years, the bio-particle combustion technology has been introduced from Europe. The combustion of bio-particles has effectively improved the emission effect, but the bio-particle combustion furnace has only one furnace. Although two air intakes are added at the outlet for two combustions, the actual combustion Black smoke will still come out during the process, and the effect is not satisfactory. In addition, the cost of processing biological raw materials into bio...

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Problems solved by technology

[0002] The previous small vertical boilers used the original direct combustion, and the volatiles, free carbon black, and hot gas produced by thermal decomposition of the fuel above the fire were directly discharged from the flue and produced a large amount of black smoke, which polluted the environment and wasted resources. ;In recent years, the bio-particle combustion technology has been introduced from Europe. The combustion of bio-particles has effectively improved the emission effect, but the bio-particle combustion furnace has only one furnace. Although two air intakes are added at the outlet for two combustions, the actual combustion There will still be black smoke during the process, and the effect is not satisfactory. In addition, the cost of processing biological raw materials into biological particles is almost doubled, but the calorific value has not increased, which is too much waste

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