Method of preparing regenerated coal from municipal solid waste

Abstract

Provided is a novel method of preparing regenerated coal from municipal solid waste. The method comprises the following steps: (1) crude sorting; (2) bag break; (3) magnetic separation; (4) screening; (5) degradation; (6) extruding dehydration; (7) drying; (8) crushing; (9) preparation of materials; (10) molding; (11) drying; (12) packaging of regenerated coal. The invention enables the problem of difficult disposal of municipal solid waste to be solved and the regenerated coal to be prepared from the municipal solid waste, and the regenerated coal has the advantages of a high heat value, no secondary pollution and stable combustion, thereby realizing resource utilization; the regenerated coal can be used to substitute fossil fuels, thereby enabling a great amount of national resources to be saved and actually turning the waste into the valuable; the method provided in the invention has the advantages of small investment and occupied land area, a short treating period and low operational cost.

Description

Technical field: [0001] The invention relates to a resource treatment process of municipal domestic waste, in particular to a novel method for making recycled coal from municipal domestic waste. Background technique: [0002] The composition of China's urban domestic waste is complex, including waste paper, clothing, muck, metal, glass, kitchen waste, etc., which are difficult to effectively deal with. At present, there are certain limitations in the composting process, direct incineration process, and landfill process in waste treatment technologies. Defects. For example, landfill treatment not only occupies a large area, but also has secondary pollution such as polluted water and air. At present, it is difficult to find suitable landfill sites in many large cities; composting process has a long treatment cycle and produces high-concentration wastewater. It is difficult to handle and pollutes the environment; the direct incineration process has high construction and operat...

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Problems solved by technology

[0002] China's urban domestic waste has complex components, including waste paper, clothing, muck, metal, glass, kitchen waste, etc., and it is difficult to effectively deal with it. At present, there are certain limitations in the composting process, direct incineration process, and landfill process in waste treatment technologies. Defects

For example, landfill treatment not only occupies a large area, but also has secondary pollution such as polluted water and air. At present, it is difficult to find suitable landfill sites in many large cities; composting process has a long treatment cycle and produces high-concentration wastewater. It is difficult to handle and pollutes the environment; the direct incineration process has high construction and operating costs, and consumes energy, causing flue gas pollution

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