Device and method for preparing high-quality fuel gas by solar-driven solid waste sectional gasification

Abstract

The invention discloses a device and a method for preparing high-quality fuel gas by solar-driven solid waste sectional gasification, and belongs to the technical field of solar energy utilization. The device comprises a heliostat field, a solar fluidized bed, a solar melting furnace, a water vapor generator, a coal economizer, an air preheater, a bag-type dust collector, a desulfurizing tower, afuel gas compressor and a gas storage device. Solar energy is gathered by the heliostat field to supply heat, sensible heat of high-temperature combustible gas generated through segmented gasificationof a solar fluidized bed and a solar melting furnace is recycled through the water vapor generator, the coal economizer and the air preheater in sequence, and then the high-temperature combustible gas is subjected to purification treatment through the bag-type dust collector and the desulfurizing tower to form high-quality fuel gas to be compressed, stored or directly utilized. The solar-driven segmented gasification reaction system is realized, the quality of gasified combustible gas can be effectively improved while solid waste is treated, secondary pollutants such as dioxin are prevented from being generated, the gasification efficiency of the system is improved, excessive solar energy is reasonably utilized, and the energy-saving and environment-friendly effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a method and a device for producing high-quality fuel gas by staged gasification of solid waste driven by concentrated solar energy. Background technique [0002] Solid waste (solid waste) is defined as: "The solid, semi-solid and gaseous waste in containers that have lost their original use value or have not lost their use value but are discarded or abandoned in production, living and other activities. Articles, substances, and articles and substances that are included in the management of solid waste according to laws and administrative regulations.” With the acceleration of urbanization in my country and the continuous improvement of residents’ living standards, the types and total amount of solid waste are increasing day by day, and the output is difficult to control and the scope of pollution Widespread and difficult to deal with, solid waste dis...

AI Technical Summary

Problems solved by technology

On the one hand, due to the complex coordination between intermittent solar energy and the power grid, on the other hand, the scale of solar energy construction in some areas far exceeds the local consumption capacity and lacks delivery channels, resulting in serious waste of solar energy resources

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