Enameled wire and wire cable co-pyrolysis method

Abstract

The invention discloses a co-pyrolysis method for enameled wires and electric wires and cables, and relates to the technical field of resources and environments. The method comprises the following steps: (1) determining the pyrolysis termination temperature and the copyrolysis matching property of copyrolysis of the enameled wire, the wire and cable insulating layer and the blended sample of the enameled wire, the wire and cable insulating layer and the blended sample; (2) formulating and optimizing a pyrolysis process window of the enameled wire sample, the wire cable insulation layer sample and the blended sample of the enameled wire sample, the wire cable insulation layer sample and the blended sample of the enameled wire sample and the wire cable insulation layer sample according to the pyrolysis termination temperature of the enameled wire sample, the wire cable insulation layer and the blended sample of the enameled wire sample and the wire cable insulation layer obtained in the step (1); the actual pyrolysis temperature of the pyrolysis process window is calculated according to the following formula: T = Tm + 100 DEG C + x * (50-100 DEG C); in the formula, T is the actual pyrolysis temperature; tm is the pyrolysis termination temperature obtained in the step (1); x is the loading capacity. The method disclosed by the invention can be used for treating various materials at the same time, and can improve the pyrolysis efficiency and reduce the energy consumption to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of resources and environment, in particular to a co-pyrolysis method for enameled wires and wires and cables. Background technique [0002] Waste copper enameled wires and wires and cables, as common equipment in the electrical industry and household appliances, have high copper content. The recycling of waste enameled wires and wires and cables has become an important supplement to recycled copper resources and has a high recycling value. [0003] The paint layer of waste enameled wire mainly includes organic resins such as polyester (PET), polyurethane (PU), polyesterimide, etc. The main methods of recycling enameled wire are laser stripping, chemical stripping and pyrolysis to achieve the purpose of stripping enameled wire. Laser paint stripping equipment is expensive, and the paint stripping efficiency is low, which is difficult to apply to industrial production; chemical paint stripping method has a h...

AI Technical Summary

Problems solved by technology

[0010] (1) The pyrolysis material is single, and the blending of enameled wire and plastics and other related materials to be pyrolyzed as waste is not considered;

[0011] (2) The blending pyrolysis technology of enameled wire and wire and cable is lacking, and the research on polymer co-pyrolysis still stays in plastics, biomass and other substances, and its pyrolysis compatibility has not yet been determined;

[0012] (3) The lack of scientificity in the control of pyrolysis degree leads to the lack of scientific analysis guidance for the formulation of pyrolysis process parameters

[0013] (4) The formulation and optimization of pyrolysis process parameters remain in the laboratory, which is not enough to guide production practice

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