Molding process and molding equipment for refuse derived fuel (RDF)

Abstract

The invention discloses a molding process and molding equipment for refuse derived fuel (RDF). The molding equipment for the RDF comprises a mixer, a fine crushing machine, a screw extruder and a molding head on the screw extruder in sequence, and a discharging outlet is formed in the molding head; one end of the mixer communicates with a closed type conveyor belt A, an adjustable oblique outlet is formed in the other end of the mixer, the adjustable oblique outlet communicates with one end of a closed type conveyor belt B, the other end of the closed type conveyor belt B communicates with oneend of the fine crushing machine, the other end of the fine crushing machine communicates with a feeding hopper through a closed type conveyor belt C, the screw extruder is arranged at the lower endof the feeding hopper, and parts are driven by a motor; and a sodium hydroxide spray head is arranged at the top of inside of the mixer. According to the molding process and equipment for the RDF, themolding efficiency is higher, the density of the RDF after molding can reach 1 or above, the water content is lower, and the maintenance cost is lower.

Description

technical field [0001] The invention relates to a production process of biomass derived fuel (RDF), in particular to a molding process and molding equipment of biomass derived fuel RDF. Background technique [0002] Biomass waste includes municipal solid waste, urban sludge, agricultural and forestry waste, medical waste, industrial organic waste, etc., and its equivalent is more than 8 times the energy used by all human beings. The above-mentioned wastes are crushed-air separation-screening-magnetic separation-crushing to a certain particle size, and pressed into biomass-derived fuel RDF (abbreviation of Refuse Derived Fuel), then the RDF has high calorific value, stable calorific value, It has the characteristics of complete pyrolysis, complete gasification, stable combustion, easy transportation, easy storage, no secondary pollution, no odor, and low emission of dioxins after combustion. [0003] The birth of biomass waste derived fuel (RDF) has undoubtedly brought vital...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of large equipment wear, high energy consumption and low production capacity caused by low moisture content of biomass waste in the background technology; to overcome the problems of high moisture content, low particle viscosity, difficulty in molding and poor consistency in the background technology Disadvantages: overcome the disadvantages of low density and low calorific value after molding in the background technology, and are difficult to industrialize; overcome the disadvantages of time-consuming, laborious and expensive replacement of the wall and screw of the screw extruder in the background technology

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