Urban solid waste and metallurgical solid waste combined treatment process

Abstract

The invention belongs to the field of waste treatment, and relates to an urban solid waste and metallurgical solid waste combined treatment process. The urban solid waste treatment process comprises crushing, sorting, drying and processing and forming so as to form refuse derived fuel; the metallurgical solid waste treatment process comprises the steps of burdening, mixing, granulating, drying andhigh-temperature roasting in a rotary hearth furnace so as to form a metalized product ball; and the urban solid waste and metallurgical solid waste combined treatment process comprises the steps that the waste derived fuel which is finally formed in the urban solid waste treatment process is used for high-temperature heat supply of the rotary hearth furnace for treating metallurgical solid waste, and meanwhile, the flue gas which is roasted in the rotary hearth furnace in the metallurgical solid waste treatment process is treated, and after the flue gas is treated, the flue gas is used for drying the waste derived fuel in the preparation process of the urban solid waste process. According to the combined treatment process, energy is saved, centralized treatment of the solid waste can berealized, overall planning can be realized, the urban solid waste treatment process and the metallurgical solid waste treatment process are supplemented each other, resources are shared, and the construction cost and the operation cost are saved.

Description

technical field [0001] The invention belongs to the field of waste disposal, and relates to a joint disposal process of urban solid waste and metallurgical solid waste. Background technique [0002] Municipal solid waste mainly refers to the solid waste generated by urban residents in their daily lives. At present, the main disposal methods are landfill and incineration, and the above two disposal methods will cause harmful components in solid waste to be released to nature (soil, soil, etc.) through different channels. water, air) pose a potential hazard. The new municipal solid waste disposal process trend is to separate the organic solid waste in the municipal solid waste into classified disposal, and use the process to prepare refuse-derived fuel (RDF), which has the advantages of high calorific value and stable combustion, but During the disposal process of the new process, additional heat energy is consumed to dry the material. How to efficiently utilize the product w...

AI Technical Summary

Problems solved by technology

The high-temperature roasting of the rotary hearth furnace process needs to consume a large amount of gas resources, resulting in an increase in operating costs. At the same time, the rotary hearth furnace process uses a single-sided heating process, and the production efficiency is low. How to reduce operating costs and improve production efficiency is the promotion of new rotary hearth furnace processes. the key to

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