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Development of Thermal Recycle Technology for Wasted Insulating Material of Electric Power Cable

废旧电力电缆绝缘材料热回收技术开发

基本信息

批准号：
06555060
负责人：
OHTAKE Kazutomo
金额：
$ 10.18万
依托单位：
Toyohashi University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555060/
关键词：
Waste Treatment Industrial Waste Thermal Recycle Combustion Recycle Insulating Material of Electric Power Cable Plastics Pulverized Combustion

项目摘要

In order to thermally recycle a wasted insulating material of electric power cable, which was made of cross-linked polyethylene (XLPE), the combustion properties and fundamental ignition/combustion characteristics were studied by using a thermogravimetric analyzer and an electrically heated drop furnace. The practical combustion behaviors were also tested by using a swirl flow turbulent combustor.From the thermobalance experiments, the combustion behavior of sample is divided into two stages. During the first stage the volatile matter evolves and burns around 500 K.Ih the second stage, on the other hand, the combustion of residual solid component takes place in the temperature range of 700-800 K.Regarding the fundamental ignition/combustion characteristics obtained by using the drop furnace, the particles sieved from 150 until 300 mum can burn at the lowest ignition temperature, and the fluctuation of ignition temperature becomes narrow. The detail combustion behavior was elucidated by measuring the components of released gas along the furnace axis during the combustion. Although low-grade hydrocarbonsand CO are produced in the upper stream of furnace, all of them diminish at the exit. Comparing the fundamental combustion behavior of the wasted material of cable coating with pulverized coals, the former can burn more easily than the latter.Based on the above-mentioned results, the wasted material was applied as the solid fuel to the swirling turbulent combustor. As a result, even the coarse particles ranged from 300 to 440 mum can burn completely. However, the larger particles ranged more than 500 mum cannot maintain the steady combustion. These results suggest that the wasted insulating material of electricpower cable can be applied worthily as one of practical solid fuels.

为了热回收废旧交联聚乙烯（XLPE）电缆绝缘料，采用热重分析仪和电热沉降炉研究了XLPE电缆绝缘料的燃烧性能和着火燃烧特性。在旋流湍流燃烧室中进行了实际燃烧性能的测试，通过热天平实验，将样品的燃烧过程分为两个阶段。另一方面，在第二阶段中，残余固体组分的燃烧在700-800 K的温度范围内发生。关于通过使用下落炉获得的基本点火/燃烧特性，从150 μ m筛分到300 μ m的颗粒可以在最低点火温度下燃烧，并且着火温度的波动变窄。通过测量燃烧过程中沿炉轴沿着方向的气体成分，阐明了燃烧的详细行为。虽然低品位烃和CO在炉的上游产生，但它们在出口处都减少。通过对电缆包覆废料与煤粉基本燃烧特性的比较，发现电缆包覆废料比煤粉更易燃烧，并在此基础上将电缆包覆废料作为固体燃料应用于旋流湍流燃烧室。因此，即使是300至440微米的粗颗粒也可以完全燃烧。然而，大于500 μ m的较大颗粒不能维持稳定燃烧。这些结果表明，电力电缆废绝缘料可以作为一种实用的固体燃料得到很好的应用。