Chain gasification furnace

Abstract

The invention relates to the technical field of chain transmission structures in gasification furnaces, and discloses a chain gasification furnace which comprises a furnace wall structure, a chain fire grate is arranged at the bottom of an inner cavity of the furnace wall structure, and a transmission mechanism is in transmission connection with the interior of the chain fire grate. The chained fire grate is of an annular structure formed by connecting a plurality of groups of fire grate chain links end to end through transmission shaft pieces, a supporting bottom frame is arranged at the bottom of an inner cavity of the furnace wall structure and located at the top of an inner cavity of the chained fire grate of the annular structure, and the front side and the rear side of the top end of the supporting bottom frame are each fixedly provided with a group of fixing racks. According to the chain gasification furnace, a transmission gear on a transmission connecting shaft and a fixed rack on a supporting bottom frame are arranged, and no matter how the initial position of a movable pressing tongue on a transmission shaft piece is, the movable pressing tongue can be forced to be turned up once in the process of rotating for a circle, so that biomass raw materials stacked and conveyed on a chain type fire grate are extruded and vibrated; and the interior of the material is loosened, so that the temperature is quickly increased.

Description

technical field [0001] The invention relates to the technical field of chain transmission structures in gasifiers, in particular to a chain gasifier. Background technique [0002] Gasification is a technical means for the thermochemical conversion of biomass, that is, under the condition of incomplete combustion of biomass fuel, the organic hydrocarbon chains with higher molecular weight are cracked and become CO, H with lower molecular weight. 2 , CH 4 and other combustible gases, and then use agricultural and forestry wastes as raw materials to generate combustible gases through four processes: oxidation reaction, reduction reaction, pyrolysis and drying, turning waste into treasure, and while processing a large number of agricultural and forestry wastes, it reduces the amount of waste. pollution to the environment. [0003] Among them, the chain gasifier transports biomass raw materials (that is, agricultural and forestry wastes) into the furnace chamber by chain transm...

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Problems solved by technology

[0007] The present invention provides a chain gasifier, which can cause a certain degree of vibration to loosen the accumulated biomass raw materials while the chain is transporting them. In order to make the temperature of its inner layer rise rapidly to carry out gasification reaction, thereby effectively improving its energy conversion rate for biomass raw materials and its own advantages of high working efficiency, stability and reliability, it solves the problem of The gasification reaction of material raw materials has obvious temperature boundaries at each stage, and the way of chain conveying biomass raw materials keeps it in a piled state in the furnace cavity, which leads to the accumulation and transportation of biomass raw materials on the outer layer and The temperature difference between the inner layers is large, and the difference in gasification reaction speed caused by the temperature difference makes the biomass raw materials in the outer layer reach the temperature and complete the reaction before the biomass raw materials in the inner layer start to react, and even No gasification reaction occurs, and the energy conversion efficiency of the inner biomass raw material is low during the continuous transmission of the chain; and in order to ensure the gasification reaction of the inner layer biomass raw material, the transmission speed of the chain is reduced, and the Problems that will reduce the working efficiency of the biomass gasifier

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