Regeneration process for solid waste of garbage power plants

Abstract

The invention discloses a regeneration process for solid waste of garbage power plants. According to the regeneration process, combustible materials, metal and sand in the solid waste are separated. A separation process comprises a dry separation process and a wet separation process; facilities related to the dry separation process comprise a vibrating mesh screen, a feeding bin, a conveyor, a cylinder screen, a jaw crusher, a material storage bin, an electromagnetic absorption machine and a wet type cylinder magnetic separator. Materials are subjected to coarse separation through dry type breaking and electromagnetic adsorption and then subjected to the wet separation process. The facilities related to the wet separation process comprise a wet type crusher, a U-shaped groove, a washbox, a cylinder fine screen, a water filtering screen, a shaking table, a bailing machine, a water extractor, a sand pool and a water pool. The materials are subjected to fine separation through the wet separation process, and finally the waste solid materials are divided into the combustible materials, metal and sand; the combustible materials are sent back to a combustion furnace to burn, the metal is regenerated and utilized after being classified, and the sand is used for manufacturing wall bricks and / or other construction materials.

Description

technical field [0001] The invention relates to a recycling process for solid waste in a waste-to-energy plant, in particular to a regeneration process for solid waste that cannot be burned by a combustion furnace in a waste-to-energy plant, and belongs to the technical field of resource recovery. Background technique [0002] The fuel of the waste-to-energy plant is municipal solid waste plus a certain proportion of coal. Municipal solid waste contains a wide variety of items, including a large number of plastic bags, fiber fabrics, black gold, non-ferrous metals, etc., which also contain a considerable proportion of sand and soil. Generally can burn under the ignition. However, the combustibles wrapped in sand cannot be burned because of the isolation layer, and the incombustible items, including metals and sand, are cleaned out of the furnace and become solid waste. A waste-to-energy plant in a relatively developed county-level city produces 1 to 2 million tons of such ...

AI Technical Summary

Problems solved by technology

If it cannot be recycled, landfill will occupy land, and land is a non-renewable resource. For cities that have the conditions to run waste-to-energy plants, land is particularly precious