A waste gasifier and a waste gasification method based thereon

Abstract

The invention discloses a garbage gasification furnace and a garbage gasification method based on the same. The gasification furnace comprises a gasification chamber and a combustion chamber, whereinthe gasification chamber has an oxygen-free reduction atmosphere with water vapor as a gasification medium, formation of dioxins is not facilitated, and ultra-low emission of dioxins can be achieved,so that the ultra-low standards of dioxin emission in China are met; meanwhile, since the gasification medium in the gasification chamber is water vapor, the generated synthesis gas has a high calorific value, and therefore requirements of most gas turbines for the calorific value of synthesized gas are met. The gasification chamber is arranged in the combustion chamber through a fixing device, alarge amount of heat is generated through combustion of a part of the synthesis gas and air in the combustion chamber, and is transferred to the gasification chamber through the wall of the gasification chamber in a heat conduction mode, and the amount of absorbed heat of an endothermic gasification reaction inside the gasification chamber can be met, so that the heat demand of a reactor is met; adoption of water vapor as a gasification medium, self-heat balance of the reactor and ultra-low emission of dioxins are achieved, and important guidance significance to harmless utilization of garbageresources is achieved.

Description

Technical field [0001] The invention belongs to the technical field of the harmless utilization of garbage, and relates to a garbage gasification furnace and a garbage gasification method based thereon. Background technique [0002] The continuous increase in the volume of municipal solid waste removal has promoted the vitality of my country's waste-to-energy market. With the continuous improvement of people's living standards and the rapid development of urbanization, the amount of domestic waste produced in my country is increasing year by year, and the rate of harmless treatment of domestic waste is also increasing year by year. In 2016, the national domestic waste removal and transportation volume was approximately 21,505,000 tons. It is expected that the volume of urban waste removal and transportation in my country will continue to grow in 2017, with a scale of about 235.97 million tons. Waste incineration power generation is the main method of domestic waste disposal in ...

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Problems solved by technology

However, at this time, the gasification reactor needs to provide external heat, and the system cannot achieve self-heat balance

[0004] At present, gasifiers generally use air as the gasification medium, but there are few gasifiers that use water vapor as the gasification medium, and there are basically no gasifiers that use water vapor as the gasification medium that can satisfy the self-heat balance. related reports

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