Domestic garbage recycling system and method

Abstract

The invention relates to a domestic garbage recycling system and method. The domestic garbage recycling system comprises a garbage drying device, a pre-treatment device, a pyrolysis device, a CO2 collecting device, a gasification device, an energy-saving deacidification device, a gasification gas purification device, a methanol synthesis device, a methanol rectification device and a power generation device; garbage pyrolytic carbon is used as a gasification raw material and water vapor generated by the power generation device is used as a gasification agent; the garbage pyrolytic carbon is gasified by adopting a fluidized bed and the garbage pyrolytic carbon with low calorific value is sufficiently utilized; meanwhile, cyclic utilization of CO2 in a factory is also realized and the carbonemission amount is reduced.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a system and method for recycling domestic garbage. Background technique [0002] Our country is facing the dual pressure of environment and energy. With the acceleration of economic and urbanization, the national energy consumption is huge. At the same time, 2 / 3 of the big cities are facing the dilemma of garbage siege. Through technical means, domestic garbage can be turned into usable resources. To a certain extent, it can alleviate my country's energy and environmental crisis. Domestic waste pyrolysis technology belongs to the world's advanced third-generation waste treatment technology, which truly realizes resource utilization, reduction and harmlessness. The moisture content of domestic waste in my country is relatively high (40%-60%), which reduces the sorting efficiency of inorganic slag, resulting in high ash content of pyrolytic carbon, low calori...

AI Technical Summary

Problems solved by technology

The moisture content of domestic waste in my country is relatively high (40%-60%), which reduces the sorting efficiency of inorganic slag, resulting in high ash content of pyrolytic carbon, low calorific value, and poor market sales. If it is used as a solid fuel, the combustion effect is poor Poor, and a large amount of secondary pollutants will be produced during the combustion process, and the environmental protection benefits are poor. Therefore, most of the waste pyrolysis charcoal can only be landfilled as pyrolysis residues, occupying land resources and causing energy waste. At the same time High moisture content also increases waste pyrolysis energy consumption

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