Multilayer bubbling type municipal solid waste refined sorting unit and method

Abstract

The invention discloses a multilayer bubbling type municipal solid waste refined sorting unit and method, belonging to the waste reutilization technical field. The multilayer bubbling type municipal solid waste refined sorting unit mainly comprises a piece of crushing equipment, a washing blender, a low-speed bubbling separating column, a speed governing and subsiding sorting box and a cyclone bubbling sorting column which are sequentially connected through a water flow conveyor trough. Oversize products are crushed and then are conveyed to the cleaning blender in which surfactant is added by water flow; after that, the products enter the low-speed bubbling separating column to remove part of the material with the specific gravity bigger than or equal to one; and the rest material enters the speed governing and subsiding sorting box so as to separate the material with the specific gravity bigger than one from the material with the specific gravity smaller than one; the material with the specific gravity smaller than one which is separated out by a branch channel of the speed governing and subsiding sorting box is conveyed to the cyclone bubbling separating column to separate out PP (Propene Polymer) and PE (Poly Ethylene); and part of paper scraps and fibers flow back and enter the low-speed bubbling separating column and the other part is separated out and recovered. The multilayer bubbling type municipal solid waste refined sorting unit is energy-saving, environment-friendly and high in efficiency.

Description

technical field [0001] The invention relates to a device and method for finely sorting municipal domestic garbage, belonging to the technical field of garbage recycling. Background technique [0002] Garbage resource sorting technology can be divided into dry method and wet method. It is generally believed that wet method is easier to obtain higher sorting accuracy than dry method. [0003] Dry separation includes optical separation, electric separation, and wind separation. The optical separation method is suitable for the separation of some old garbage in the blocky old garbage. In addition, it is difficult to separate the black old garbage by the spectral method; the electric separation is divided into electrostatic separation and friction separation. Charged separation, but because the difference in charging of old garbage is not very obvious, especially for actual old garbage, its charging properties are different from pure old garbage, and electric separation is greatl...

AI Technical Summary

Problems solved by technology

[0005] Optical separation, electric separation, wind separation, density separation, flotation, etc. have been applied to varying degrees in the separation of old waste, but there are generally poor separation accuracy, low cleanliness, high operating costs, and resource-based products. low price problem

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