Biomass gasifier with rotatable grate for ash discharge

Abstract

The invention discloses a biomass gasification furnace with rotatable ash-discharging furnace bars, which comprises an upper furnace body and a lower furnace body. The upper furnace body is provided with a furnace cavity for burning biomass particles, and the furnace cavity communicates with the lower furnace body. There is a grate at the opening of the lower end of the furnace cavity, and the grate is composed of several furnace bars arranged side by side. On the furnace bar, there are flat tooth rows and pointed tooth rows arranged at intervals. Each furnace bar can rotate synchronously around its own axis. When making gas, it rotates to the flat tooth row butt joint, narrows the gap between the furnace bars to hold the biomass particles in the furnace cavity, rotates the furnace bar when discharging ash, and the pointed teeth The row crushes the furnace ash and discharges it into the lower furnace body. After the ash discharge is completed, it returns to the state of butt joint teeth; the grate is installed on a movable base, which can be moved out of the lower furnace body. The biomass gasification furnace of the present invention can discharge ash smoothly without fear of slagging, improves gas production efficiency, reduces energy waste, and is a remarkable innovation in the field of biomass gas production.

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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