An internal circulating fluidized bed oxygen enrichment device

Abstract

The invention provides an internal circulating fluidized bed oxygen-enriched gasification device, which includes a gasifier body, an oxygen-enriched generator, a multi-air chamber air distribution device, a feeding device and a slag discharge device; the gasifier body includes a The dense-phase area and the dilute-phase area on the upper part are connected by a throat area; the bottom of the dense-phase area is equipped with a multi-chamber air distribution device equipped with a directional air cap, and is connected with the oxygen-rich generator The devices are connected; the junction of the dense phase section and the dilute phase section is the outlet of the feeding device, and the gap between the multi-air chamber air distribution device at the bottom of the dense phase section and the gasifier body is the slag outlet. A slag discharge device is arranged. This system can efficiently realize the pyrolysis and gasification of waste solid organic matter such as garbage and biomass, and has the advantages of fast gasification speed, high conversion efficiency, less slag and residual carbon, and easy control of pollutants.

Description

technical field [0001] The invention relates to the field of pyrolysis and gasification of solid organic waste, in particular to an internal circulating fluidized bed oxygen-enriched gasification device. technical background [0002] With the rapid development of the country's economy, the generation of organic solid waste led by municipal solid waste has increased sharply, and the problem of disposal is imminent. [0003] At present, my country's waste treatment mainly adopts landfill, composting and incineration. Landfills are prone to produce methane-rich landfill gas, causing explosions, and a large amount of landfill leachate, which contains heavy metals, toxic and harmful organic chemical pollutants, and a large number of viral pathogens. Due to the imprecise classification of waste in the composting method, the fertilizer quality is low and difficult to sell. When the incineration method is used to treat municipal solid waste, since the solid waste contains a large ...

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Problems solved by technology

Once the gasification furnace does not reach the appropriate temperature, it cannot guarantee a sufficient gasification rate, resulting in excessive carbon content in the bottom slag, resulting in energy waste; and insufficient heat value of the syngas will lead to subsequent gasification without auxiliary fuel. The temperature of the melting furnace is low, and it is difficult to realize the melting of fly ash, which leads to a decrease in the collection rate of fly ash, resulting in a decrease in the environmental protection of the system

At present, my country's garbage has a high moisture content and a low calorific value, which cannot meet the needs of the current garbage gasification and melting process.

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