利用焦化工艺处理废塑料技术研究 Ⅰ. 热天平与10 g固定床实验
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摘要: 利用热天平和10 g固定床反应器分别考察了北京市生活垃圾中的废塑料与首钢炼焦配煤的热失重特性及热解产物分布规律。实验研究表明，首钢炼焦配煤主要热分解温度区域为300 ℃～750 ℃，北京市废塑料主要热分解温度区域为300 ℃～550 ℃，二者在相互重叠的失重温度区间产生“协同效应”，且在一定配比范围内，共热解产物出现 “增油减水”现象。首次提出了协同效应强度的概念及其计算式： 和 ，并得出废塑料的添加量为1％时，协同效应强度最大。Abstract: Thermogravimetric behavior and products distribution of the co-coking of coal from Shougang coking plant with waste plastics from municipal solid waste of Beijing were studied using thermal balance and 10 g fixed-bed reactor. The results showed that the temperature range of weight loss of Shougang blend coal was from 300 ℃ to 750 ℃, but for waste plastics it was from 300 ℃ to 550 ℃. Co-coking of blend coal and waste plastics made tar yield increase and water yield decrease in the overlapped decomposition temperature region for the synergism between them. Moreover, the new idea and formulas of synergism extent were proposed as and . Based on the formation, the conclusion was obtained that the maximum synergism occurred when the ratio of waste plastic added was 1%.
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Key words:
- waste plastics /
- coal /
- coking
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