Method for preparing fuel gas by gasifying biomass materials and device thereof

Abstract

The invention relates to a method for preparing fuel gas by gasifying biomass materials and a device thereof, belonging to the technical fields of methods for preparing fuel gas by solid biomass materials in a gasifying process and the devices thereof. The method comprises the following steps: feeding, gasifying, dedusting, spraying and purifying, detarring, pumping front-end gases and conveying rear-end fuel gas by a Roots blower, and conveying the fuel gas to a fuel gas storage cabinet through a tempering preventing device. The device realizing the method comprises a feeding mechanism, a controllable gasifying furnace and a circulation water pump, a gravity deduster, a spraying purifier and a spraying pump, a biomass tar purifier, the Roots blower, the tempering preventing device and thefuel gas storage cabinet. The device is used for transforming the solid biomass materials of straws and the like into the fuel gas with less impurities and high heat value and supplying the fuel gasfor users centrally.

Description

technical field [0001] The invention relates to a carbonization or coking process and its device, in particular to a method and its device for producing fuel gas from biomass solid materials through a gasification process. Background technique [0002] In the agricultural and forestry production industry, a huge amount of biomass waste is produced every year, such as straw, fruit shell, cork, branches, leaves, roots, etc., only a part of which is used as fertilizer, feed, and cultivation substrate. There is also a considerable amount that has not been utilized, allowing it to rot and decompose naturally, or be burned in the field, which is not only a waste of these natural resources, but also pollutes the environment. In some places, crop stalks and trees are traditionally used as fuel for living and heating. Using straw and trees directly as fuel not only has low calorific value and occupies a stacking site, but also produces smoke and dust that causes great harm to people ...

AI Technical Summary

Problems solved by technology

[0004] The design of the prior art generally has a relatively long process flow, and does not achieve high processing efficiency in each process link; on the corresponding equipment that executes the process flow, there are many devices that execute the process flow, which will inevitably bring Defects of large investment in equipment, heavy daily use and maintenance workload, which will lead to reduced economic effect

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