升温速率对纤维素与聚乙烯共热解影响的研究

刘波; 郭欣; 吴棒; 刘子蒙

doi:10.19906/j.cnki.JFCT.2023006

升温速率对纤维素与聚乙烯共热解影响的研究

doi: 10.19906/j.cnki.JFCT.2023006

刘波^{1, 2,},
郭欣^{1, 2, ,},
吴棒^1,,
刘子蒙^{1, 2,}

1.
华中科技大学煤燃烧国家重点实验室, 湖北武汉 430074
2.
华中科技大学中欧清洁与可再生能源学院, 湖北武汉 430074

详细信息

通讯作者:
E-mail: 477791868@qq.com

中图分类号: TK6
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出版历程
- 收稿日期: 2022-10-24
- 录用日期: 2022-12-26
- 修回日期: 2022-12-14
- 网络出版日期: 2023-01-18

A study on the effect of heating rate during cellulose and polyethylene co-pyrolysis

LIU Bo^{1, 2
,},
GUO Xin^{1, 2
, ,},
WU Bang^1
,,
LIU Zi-meng^{1, 2
,}

1.
State Key Laboratory of Coal Combustion, University of Science and Technology, Wuhan 430074, China
2.
China-EU Institute for Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, China

摘要

摘要: 在管式炉反应器中，对纤维素（CE）与高密度聚乙烯（HDPE）进行了慢速共热解和快速共热解的研究，考察了升温速率和混合比例对CE与HDPE共热解的影响。结果表明，CE与HDPE慢速共热解可以提高液态产率，并降低气态产率和焦炭产率。在CE与HDPE为1∶3时，慢速共热解相互作用最强烈，此时液态产率为95.4%，比计算值相比，增加了9.8%；而快速共热解降低液态产率，同时提高气态产率。在CE与HDPE为3∶1时，快速共热解相互作用最强烈，此时液态产率与气态产率分别为49.3%和42.8%，与计算值相比，液态产率降低了14.5%，而气态产率提高了14.1%。热解油分析结果表明，CE与HDPE共热解存在协同效应，CE与HDPE共热解有利于降低液态产物的含氧量，提高焦油的质量。
- 共热解 /
- 纤维素 /
- 聚乙烯 /
- 相互作用
Abstract: Slow co-pyrolysis and fast co-pyrolysis of cellulose (CE) with high density polyethylene (HDPE) were investigated in a tube furnace reactor. The effects of heating rate and mixing ratio on the co-pyrolysis of CE and HDPE were investigated. The results show that slow co-pyrolysis of CE and HDPE can boost liquid yields while lowering gas and char yields. When the ratio of CE to HDPE is 1∶3, the slow co-pyrolysis interaction is strongest. At this ratio, the liquid yield was 95.4%. Compared with the calculated yield, the liquid yield is increased by 9.8%. Rapid co-pyrolysis reduce the liquid yield, but increase the gas yield. When the ratio of CE to HDPE is 3∶1, the rapid co-pyrolysis interaction is strongest. The liquid and gas yields were 49.3% and 42.8%, respectively. Compared with the calculated yields, the liquid yield is reduced by 14.5% but the gas yield is increased by 14.1%. These results verified that the Synergistic effect existed during co-pyrolysis of CE and HDPE under the experimental conditions. Co-pyrolysis of CE and HDPE favors reducing the oxygen content of the liquid product and improving the quality of the liquid product.
- co-pyrolysis /
- cellulose /
- polyethylene /
- interaction

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图 1 热解试验装置示意图

Figure 1 Schematic diagram of pyrolysis process 1 Mass flow meter, 2 Rotor flow meter, 3 Holder, 4 Quartz tube, 5 Reactor, 6 Condenser, 7 Ice, 8 Exhaust gas

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图 2 CE/HDPE不同混合比例的TG和DTG曲线

Figure 2 TG and DTG curves of CE and HDPE with different blending ratios

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图 3 CE/HDPE不同混合比例产物产率分布（a）慢速热解（b）快速热解

Figure 3 Products yield distribution of CE and HDPE with different blending ratios (a)Slow pyrolysis (b)Fast pyrolysis

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图 4 CE/HDPE不同混合比例气态产物变化趋势（a）慢速热解主要无机气体（b）快速热解主要无机气体（c）慢速热解主要有机气体（d）快速热解主要有机气体

Figure 4 Changes of gas products of CE and HDPE with different blending ratios (a) Inorganic gases of slow pyrolysis (b) Inorganic gases of fast pyrolysis (c) Organic gases of slow pyrolysis,and(d) Organic gases of fast pyrolysis

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图 5 CE/HDPE不同混合比例的液态产物分布（a）慢速热解（b）快速热解

Figure 5 Liquid products distribution of CE and HDPE with different blending ratios (a)Slow pyrolysis (b)Fast pyrolysis

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图 6 液态产物随CE/HDPE不同混合比例的变化趋势（a）慢速热解（b）快速热解

Figure 6 Changes of liquid products for CE and HDPE with different blending ratios (a)Slow pyrolysis (b) Fast pyrolysis

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图 7 气态产物差异（a）慢速热解（b）快速热解

Figure 7 The different of gas products (a)Slow pyrolysis (b) Fast pyrolysis

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图 8 液态产物差异（a）慢速热解（b）快速热解

Figure 8 The different of liquid products (a)Slow pyrolysis (b) Fast pyrolysis

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表 1 CE与HDPE样品的工业分析与元素分析

Table 1 Proximate and ultimate analysis of CE and HDPE

Feedstock Proximate analysis (wt%) Ultimate analysis (wt%)
V FC C H O

CE 90.86% 9.14% 44.44% 6.17% 49.39%
HDPE 100% 0 85.71% 14.29% 0%

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