System for extracting rubbish derived fuel (RDF) from municipal rubbish

Abstract

The invention relates to a system for extracting rubbish derived fuel (RDF) from municipal rubbish. The system is characterized by comprising a rubbish receiving device, a first crushing machine, a biological fermentation pond, a first iron remover, a sieving machine, a gravity separator, a second iron remover, a vortex separator, an inert material storage bank, a sorting belt, a vibrating sieve,a second crushing machine and an RDF storage bank, wherein a conveying device is arranged between the rubbish receiving device and an input port of the first crushing machine; a conveying device is arranged between the output port of the first crushing machine and the biological fermentation pond; the oversize product output port of the sieving machine is positioned above the input end of the sorting belt; the output end of the sorting belt is communicated with the input port of the vibrating sieve; and a conveying device is arranged between the undersize product output port of the vibrating sieve and the RDF storage bank. The system can extract the RDF from the municipal rubbish and is applicable to extracting the RDF from mixed and collected original rubbish.

Description

technical field [0001] The present invention relates to a system for extracting refuse-derived fuel (RDF) from municipal waste. Background technique [0002] The treatment and utilization of municipal waste "harmless, reduced, and resourceful" is a worldwide issue. At present, the centralized treatment methods of urban and rural municipal waste in my country mainly include landfill, composting, and incineration. The landfill method occupies a large area and has a low degree of waste reduction. It requires anti-seepage treatment, and a biogas recovery and leachate treatment plant must be built, which is likely to pollute groundwater and surrounding air. The composting method is suitable for treating waste containing a lot of perishable organic matter, and can realize the comprehensive utilization of some resources, but the quality of composting is not easy to control, and the harmful components often exceed the standard. Waste incineration power generation is developing ver...

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Problems solved by technology

[0004] After searching the literature of the prior art, it is found that the patent application number 201010274162.6 discloses a system and method for making garbage-derived fuel. After the domestic garbage is extracted by a combustible extraction device, it is crushed by a crushing device and formed by an extrusion molding device to prepare a garbage-derived fuel. fuel, but this method does not effectively solve the effective classification and treatment of other non-combustible components during the treatment process, and does not fully realize the resource utilization of domestic waste; the patent ZL98117498. The device with the steps of pressing, dispersing, and crushing, sends the garbage into the garbage sorting mechanism using water as the medium for separation and classification by means of vibration, but the facilities are complicated and the water consumption is large; when the equipment is shut down for maintenance, the entire garbage treatment process will be damaged. The chain is out of service; the generated RDF has a high water content and needs to be further dried, otherwise it will lead to additional energy consumption and increase CO 2 emissions

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