Biomass gasifier with grate bars capable of rotating to discharge ash

Abstract

The invention discloses a biomass gasifier with grate bars capable of rotating to discharge ash. The biomass gasifier comprises a gasifier body, wherein a gasifier cavity for burning biomass particles is formed in the gasifier body; ash discharge space is arranged at the lower part of the gasifier cavity; a grate is arranged at an opening at the lower end of the gasifier cavity and is formed by assembling a plurality of grate bars side by side; flat-end dentures and pointed-end dentures are arranged on the grate bars along the axis direction and are arranged at intervals; each grate bar can rotate synchronously around the respective axis; the grate bars rotate until the flat-end dentures are butted during gas production; the gaps between the grate bars are reduced to support the biomass particles in the gasifier cavity; during ash discharge, the grate bars are rotated, and the pointed-end dentures are used for breaking ash and discharging the ash into the ash discharge space; the state that the flat-end dentures are butted is restored after ash discharge is completed. The biomass gasifier can discharge ash smoothly and avoid slagging, improves the gas production efficiency, and reduces the energy waste, thereby being an obvious innovation in the biomass gas production field.

Description

technical field [0001] The invention relates to a biomass gasification furnace with a rotatable ash-discharging furnace bar. During the gas production process, the ash can be quickly discharged from the furnace cavity through the rotation of the furnace bar itself, and particularly relates to the furnace bar structure in the gasification furnace. Background technique [0002] Using crushed crop stalks and other biomass particles to produce gas under high temperature cracking conditions is an energy-saving and environmentally friendly green new energy field. The common crop stalks used are corn stalks, cotton stalks, etc. This technology is especially used in rural areas. It has broad application prospects. Since the development of this gas production technology, there are many types of reaction furnaces designed by different manufacturers, but their structures are relatively simple, and they can only realize the basic functions of high temperature cracking. Poor, there are ...

AI Technical Summary

Problems solved by technology

Since the lower part of the reaction furnace needs to be sealed during the gas production process to prevent the combustion-supporting gas from entering, and the inside of the reaction furnace is a high-temperature environment, it is necessary to stop the furnace to discharge ash, thereby reducing production efficiency, and restarting the reaction furnace to ignite biomass will waste raw materials

[0005] In the Chinese utility model patent "A Thermal Cracking Reactor" (patent number: ZL201120127663.1), a reaction furnace with a double-layer grate is introduced. The double-layer grate is an upper and lower mechanism, and the upper grate is relatively lower. The distance between the grates can be adjusted in the horizontal direction, and different densities can be formed between the bars of the upper and lower grates, which can be combined to form a grate with a large gap or a grate with a small gap. The biomass can be fully burned and the ash can be discharged smoothly, but the grate with this structure still cannot solve the problem of ash slagging, and the improvement of the gas production process is not obvious

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