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中国塑料 ›› 2024, Vol. 38 ›› Issue (3): 86-93.DOI: 10.19491/j.issn.1001-9278.2024.03.015
收稿日期:
2023-08-28
出版日期:
2024-03-26
发布日期:
2024-03-28
通讯作者:
罗冠群(1987—),女,讲师,从事固体废弃物能源化与高值化利用方面的研究,luogq@hzcu.edu.cn基金资助:
LUO Guanqun1,2(), ZHAO Le2, PAN Yaqi1
Received:
2023-08-28
Online:
2024-03-26
Published:
2024-03-28
Contact:
LUO Guanqun
E-mail:luogq@hzcu.edu.cn
摘要:
使用废弃农夫山泉550 mL矿泉水瓶的瓶盖(PE)与瓶身(PET)作为原料。采用实验室规模固定床反应器和热重分析仪进行热解实验,探究废塑料PE与PET共热解的协同效应,并在失重阶段尺度上研究共热解反应的动力学特性。结果表明,PE与PET共热解可以促进热解油的生成,提升热解油中碳氢化合物的选择性;当PE与PET掺混比例为2∶1时,热解油产率最高为84.72 %;热解温度的升高促进“双烯合成”与芳构化等二次反应的发生,生成更多的芳烃类产物;PE与PET共热解过程中两个失重阶段的平均表观活化能分别为191.05 kJ/mol和215.22 kJ/mol,反应机理分别符合反应阶数机理函数模型和收缩体函数机理模型。
中图分类号:
罗冠群, 赵乐, 潘雅琪. 废弃PE与PET共热解特性与动力学特性研究[J]. 中国塑料, 2024, 38(3): 86-93.
LUO Guanqun, ZHAO Le, PAN Yaqi. Study on co⁃pyrolysis characteristics and kinetics of waste PE and PET plastics[J]. China Plastics, 2024, 38(3): 86-93.
项目 | 成分 | PE | PET |
---|---|---|---|
元素分析(质量分数)/% | C | 84.33 | 60.27 |
H | 14.82 | 4.69 | |
O* | 0.70 | 34.25 | |
N | 0.15 | 0.79 | |
工业分析(质量分数)/% | 水分 | 0 | 0 |
挥发分 | 98.78 | 84.18 | |
固定碳 | 0.16 | 14.43 | |
灰分 | 1.05 | 1.39 |
项目 | 成分 | PE | PET |
---|---|---|---|
元素分析(质量分数)/% | C | 84.33 | 60.27 |
H | 14.82 | 4.69 | |
O* | 0.70 | 34.25 | |
N | 0.15 | 0.79 | |
工业分析(质量分数)/% | 水分 | 0 | 0 |
挥发分 | 98.78 | 84.18 | |
固定碳 | 0.16 | 14.43 | |
灰分 | 1.05 | 1.39 |
反应机理类型 | 模型名称/代码 | ||
---|---|---|---|
幂函数模型 | |||
反应阶数模型 | 一阶模型 O1 | ||
二阶模型 O2 | |||
三阶模型 O3 | |||
几何模型 | 一维模型 D1 | ||
二维模型 D2 | |||
收缩面模型 R2 | |||
收缩体模型 R3 | |||
成核与生长 模型 | Avrami⁃Erofeev A2 | ||
Avrami⁃Erofeev A3 | |||
Avrami⁃Erofeev A4 |
反应机理类型 | 模型名称/代码 | ||
---|---|---|---|
幂函数模型 | |||
反应阶数模型 | 一阶模型 O1 | ||
二阶模型 O2 | |||
三阶模型 O3 | |||
几何模型 | 一维模型 D1 | ||
二维模型 D2 | |||
收缩面模型 R2 | |||
收缩体模型 R3 | |||
成核与生长 模型 | Avrami⁃Erofeev A2 | ||
Avrami⁃Erofeev A3 | |||
Avrami⁃Erofeev A4 |
样品 | 升温速率( | 最大失重速率所对应的温度/℃ | |
---|---|---|---|
PE | 5 | - | 463.04 |
10 | - | 477.00 | |
20 | - | 493.01 | |
PET | 5 | 422.97 | - |
10 | 436.93 | - | |
20 | 446.10 | - | |
PE和PET | 5 | 424.91 | 439.91 |
10 | 440.82 | 463.82 | |
20 | 455.06 | 472.06 |
样品 | 升温速率( | 最大失重速率所对应的温度/℃ | |
---|---|---|---|
PE | 5 | - | 463.04 |
10 | - | 477.00 | |
20 | - | 493.01 | |
PET | 5 | 422.97 | - |
10 | 436.93 | - | |
20 | 446.10 | - | |
PE和PET | 5 | 424.91 | 439.91 |
10 | 440.82 | 463.82 | |
20 | 455.06 | 472.06 |
升温速率/ ℃•min-1 | 温度区间/℃ | |
---|---|---|
第一失重阶段 | 第二失重阶段 | |
5 | 346.91~438.91 | 438.91~494.91 |
10 | 348.82~452.82 | 352.82~5028.82 |
20 | 355.06~467.06 | 467.06~546.06 |
升温速率/ ℃•min-1 | 温度区间/℃ | |
---|---|---|
第一失重阶段 | 第二失重阶段 | |
5 | 346.91~438.91 | 438.91~494.91 |
10 | 348.82~452.82 | 352.82~5028.82 |
20 | 355.06~467.06 | 467.06~546.06 |
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