油茶果蒲与聚丙烯共热解特性及动力学分析

doi:10.3969/j.issn.1673-5854.2022.05.006

生物质化学工程 ›› 2022, Vol. 56 ›› Issue (5): 37-42.doi: 10.3969/j.issn.1673-5854.2022.05.006

油茶果蒲与聚丙烯共热解特性及动力学分析

邓星立¹^,², 蒋绍坚¹, 肖志红²^,*(), 李昌珠², 刘旭东²^,³, 李颖¹^,⁴

1. 中南大学能源科学与工程学院, 湖南长沙 410083
2. 湖南省林业科学院省部共建木本油料资源利用国家重点实验室, 湖南长沙 410004
3. 油脂分子构效湖南省重点实验室, 湖南长沙 410004
4. 南方木本油料利用科学国家林业和草原局重点实验室, 湖南长沙 410004

收稿日期:2022-01-24 出版日期:2022-09-30 发布日期:2022-09-27
通讯作者: 肖志红 E-mail:xiaozhihong@hnlky.cn
作者简介:肖志红, 研究员, 研究领域: 木本油料资源的开发和利用; E-mail: xiaozhihong@hnlky.cn
邓星立(1996—), 男, 湖南湘潭人, 硕士生, 主要从事生物质热化学转化研究
基金资助:
湖南省林业科技创新计划资助项目(XLK201909);长沙市科技计划重大专项资助项目(KQ20062024)

Thermal Behavior and Kinetic Analysis for Co-pyrolysis of Camellia oleifera Shell and Polypropylene

Xingli DENG¹^,², Shaojian JIANG¹, Zhihong XIAO²^,*(), Changzhu LI², Xudong LIU²^,³, Ying LI¹^,⁴

1. School of Energy Science and Engineering, Central South University, Changsha 410083, China
2. State Key Laboratory of Utilization of Woody Oil Resources, Hunan Academy of Forestry, Changsha 410004, China
3. Hunan Provincial Key Laboratory of Oils & Fats Molecular Structure and Function, Changsha 410004, China
4. Key Laboratory of National Forestry and Grassland Administration on Utilization Science for Southern Woody Oil Resources, Changsha 410004, China

Received:2022-01-24 Online:2022-09-30 Published:2022-09-27
Contact: Zhihong XIAO E-mail:xiaozhihong@hnlky.cn

摘要/Abstract

摘要：

为了研究油茶果蒲(CS)与聚丙烯(PP)混合比例(质量比)对两者共热解特性及动力学参数的影响, 将CS与PP按不同比例(3∶7、5∶5和7∶3)混合, 分别在5、10、15和20 ℃/min的升温速率下, 由50 ℃升温至800 ℃进行热重实验及动力学分析。热重实验结果表明: 混合样品的共热解可以分为两个阶段, 当温度低于352 ℃时, 在混合样品热解中CS热解占主导作用, 混合样品中的PP促进了CS的热解; 温度高于352 ℃时, PP的热解占主导作用, CS对PP热解起抑制作用。动力学分析结果表明: FWO法适合CS与PP单独热解及共热解动力学分析, m(CS)∶m(PP)为3∶7的混合样品平均表观活化能(217.04 kJ/mol)最低, 相比于CS单独热解的平均表观活化能(474.94 kJ/mol)降低了54.3%。

关键词: 共热解, 热重分析, 动力学分析, 油茶果蒲, 聚丙烯

Abstract:

To study the effects of mixing ratio on the co-pyrolysis thermal behavior and kinetic parameters of Camellia oleifera shell(CS) and polypropylene(PP), CS and PP were mixed at different mass ratios(3∶7, 5∶5 and 7∶3) to carry out thermogravimetric experiment and kinetic analysis from 50 to 800 ℃ with the heating rates of 5, 10, 15 and 20 ℃/min. The result of thermogravimetric experiment indicated that the co-pyrolysis of mixed samples could be divided into two stages. When the temperature was lower than 352 ℃, the pyrolysis of CS played a leading role in the pyrolysis of mixed samples and PP promoted the pyrolysis of CS. When the temperature was higher than 352 ℃, the pyrolysis of PP dominated the pyrolysis of mixed samples and the pyrolysis of CS played an inhibitory role. The results of kinetic analysis showed that the FWO method was suitable for the kinetic analysis of pyrolysis and co-pyrolysis of CS and PP, and the average apparent activation energy of the mixed samples with a mass ratio of 3∶7 between CS and PP was the lowest(217.04 kJ/mol), which was 54.3% lower than that of CS pyrolysis alone(474.94 kJ/mol).

Key words: co-pyrolysis, thermogravimetric analysis, kinetic analysis, Camellia oleifera shell, polypropylene

中图分类号:

TQ35
TK62

邓星立, 蒋绍坚, 肖志红, 李昌珠, 刘旭东, 李颖. 油茶果蒲与聚丙烯共热解特性及动力学分析[J]. 生物质化学工程, 2022, 56(5): 37-42.

Xingli DENG, Shaojian JIANG, Zhihong XIAO, Changzhu LI, Xudong LIU, Ying LI. Thermal Behavior and Kinetic Analysis for Co-pyrolysis of Camellia oleifera Shell and Polypropylene[J]. Biomass Chemical Engineering, 2022, 56(5): 37-42.

图/表 4

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图2

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原料 raw material	元素分析element analysis/%					H/C_eff	工业分析industrial analysis/%				低位热值/ (MJ·kg^-1) low heating value
原料 raw material	C	H	O	N	S	H/C_eff	水分 moisture	挥发分 volatile	灰分 ash	固定碳 fixed carbon	低位热值/ (MJ·kg^-1) low heating value
油茶果蒲(CS) C. oleifera shell	45.60	5.93	46.18	0.39	0	0.02	0.66	71.86	4.20	23.28	14.98
聚丙烯(PP) polypropylene	85.80	14.12	0	0	0	1.98	1.77	98.12	0.07	0.04	42.61

α	CS		PP		m(CS)∶m(PP)=3∶7		m(CS)∶m(PP)=5∶5		m(CS)∶m(PP)=7∶3
α	E/(kJ·mol^-1)	R²	E/(kJ·mol^-1)	R²	E/(kJ·mol^-1)	R²	E/(kJ·mol^-1)	R²	E(kJ·mol^-1)	R²
0.1	110.32	0.999	83.85	0.998	138.26	0.999	265.78	0.997	187.46	0.999
0.2	508.41	0.986	97.74	0.999	169.14	0.978	283.56	0.985	280.53	0.998
0.3	423.54	0.973	114.11	0.999	202.82	0.968	375.42	0.978	274.69	0.993
0.4	325.48	0.995	128.85	0.999	215.14	0.973	245.43	0.996	319.87	0.987
0.5	331.12	0.992	147.02	0.999	206.25	0.992	253.56	0.999	313.25	0.965
0.6	329.34	0.995	158.65	0.999	240.36	0.983	203.67	0.963	479.34	0.985
0.7	417.58	0.980	173.18	0.998	254.67	0.975	270.49	0.987	486.23	0.996
0.8	723.59	0.969	185.08	0.991	259.82	0.991	268.98	0.999	329.90	0.998
0.9	1105.08	0.983	196.03	0.999	266.90	0.997	261.31	0.993	315.74	0.996
平均值 mean	474.94		142.72		217.04		269.80		331.89

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油茶果蒲与聚丙烯共热解特性及动力学分析

Thermal Behavior and Kinetic Analysis for Co-pyrolysis of Camellia oleifera Shell and Polypropylene

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