黏胶纤维/杨木共水热炭的燃烧和热解特性

邢语彤; 张一唯; 卢平

doi:10.13205/j.hjgc.202308017

黏胶纤维/杨木共水热炭的燃烧和热解特性

doi: 10.13205/j.hjgc.202308017

南京师范大学能源与机械工程学院, 南京 210023

基金项目:

国家自然科学基金(51476079)

详细信息

作者简介:
邢语彤(1998-),女,硕士研究生,主要从事生物质热化学转化与利用研究。xingyt0902@163.com

通讯作者:
卢平(1968-),男,博士,教授,主要从事燃烧及污染物控制,生物质热化学转化与利用等研究。luping@njnu.edu.cn

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出版历程
- 收稿日期: 2022-09-01
- 网络出版日期: 2023-11-15

COMBUSTION AND PYROLYSIS CHARACTERISTICS OF HYDROCHARS BY CO-HYDROTHERMAL CARBONIZATION OF VISCOSE FIBER AND POPLAR WOOD

School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210023, China

摘要

摘要: 水热炭化是极具发展前景的高水分生物质和有机固废预处理方法。以黏胶纤维(VF)与杨木(PW)为对象,采用水热反应釜,研究2种原料掺混比对水热炭工业分析、元素分析和热值演变的影响,并结合热重分析,评价水热炭的热解和燃烧性能。结果表明:水热处理能够显著提升原料的燃料性能,原料中的固定碳和碳元素含量分别由8.48%和41.94%增加至54.28%和73.89%,相应的热值可达到29.22 MJ/kg,同时原料中的挥发分和氧元素含量显著降低,由87.02%和62.45%分别最低降至45.01%和20.19%。2种原料共水热处理,一方面能够拓宽水热炭热解失重温度区间,降低热解活化能;另一方面能够显著改善水热炭的着火和燃烧性能,使得共水热炭的燃烧最大速率温度和温度区间向高温转移,并降低燃烧反应活化能。随着黏胶纤维掺混比的增加,水热炭热解和燃烧稳定性均有所提高,且当两者质量掺混比为5∶5时,共水热炭的综合热解指数、综合燃烧指数和着火指数均达到最大,分别为6.13×10^-8、9.64×10^-7和5.27×10^-5。研究表明,黏胶纤维与杨木的共水热,获得高质量的固体燃料,有效改善了单一原料水热炭化时存在的不足,为黏胶纤维等固废能源化利用提供了参考。
- 水热炭化 /
- 黏胶纤维 /
- 杨木 /
- 燃烧 /
- 热解 /
- 热重分析
Abstract: Hydrothermal carbonization is a promising method for pretreatments of high moisture biomass and organic solid wastes. In this paper, hydrochars were prepared from two raw samples of viscose fiber (VF) and poplar wood (PW) in a hydrothermal reactor, the effects of the blending ratio of raw materials on proximate analysis, ultimate analysis, and caloric value of as-prepared hydrochars, and the combustion and pyrolysis characteristics of hydrochars were evaluated by the thermogravimetric analyzer. The results indicated that hydrothermal carbonization can improve the fuel characteristics of raw materials, the contents of fixed carbon and oxygen in raw materials increased significantly from 8.48% and 41.94% to 54.28% and 73.89%, respectively, and the relevant calorific value achieved 29.22 MJ/kg; at the same time, the contents of volatile matter and oxygen decreased significantly from 87.02% and 62.45% to 45.01% and 20.19%, respectively. Through co-hydrothermal pretreatment of raw materials, on one hand, the temperature interval of hydrochar pyrolysis was extended, and the relevant pyrolysis activation energy was decreased; on the other hand, the ignition and combustion characteristics were improved significantly, which made the maximum combustion rate temperature and its temperature interval shift towards a higher temperature zone, and the activation energy of combustion reaction was decreased. The stability of combustion and pyrolysis of hydrochars was enhanced with the increase of the blending ratio of viscose fiber. When the blending ratio of viscose fiber to poplar wood was 5∶5, the comprehensive pyrolysis index, comprehensive combustion index, and ignition index all achieved the maximum values of 6.13×10^-8, 9.64×10^-7 and 5.27×10^-5, respectively. This study showes that the co-hydrothermal of viscose fibers with poplar, to gain high mass solid fuel, effectively improves the shortcomings of hydrothermal carbonization of single raw materials, and provides a reference for the energy utilization of solid waste such as viscose fiber.
- hydrothermal carbonization /
- viscose fiber /
- poplar wood /
- combustion /
- pyrolysis /
- thermogravimetric analyzer

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参考文献(29)

[1]	姜椿芳.中国大百科全书:纺织[M].北京:中国大百科全书出版社,1984.
[2]	华经情报网.2020年中国黏胶短纤行业市场现状,行业库存持续下降[Z].https://baijiahao.baidu.com/s?id=1683663781772587181&wfr=spider&for=pc:2020-11 -18.
[3]	潘肖.黏胶纤维成品质量提升的研究分析[D].唐山:华北理工大学,2019.
[4]	昝逸凡,张彦飞,赵新鹏,等.原生生物质水热炭化制备碳材料及其应用[J].辽宁石油化工大学学报,2020,40(4):70-79.
[5]	ZHANG Y,LU P,CHEN D,et al.Effect of operation conditions on fuel characteristics of hydrochar via hydrothermal carbonization of agroforestry biomass[J/OL].Biomass Conversion and Biorefinery (2021).https://doi.org/10.1007/s13399-021-02003-w:.
[6]	KUBO S,DEMIR-CAKAN R,ZHAO L,et al.Porous carbohydrate-based materials via hard templating[J].Chemsuschem,2010,3(2):188-194.
[7]	李田,赵培涛,黄能,等.水热提质对木屑燃烧特性和热分解特性的影响[J].可再生能源,2016,34(12):1868-1876.
[8]	杨秀英,方志,张德庆.水热法碳化废旧棉织物制备碳微球的研究[J].齐齐哈尔大学学报(自然科学版),2015,31(2):5-7,11.
[9]	张永芳,王淑花,郭红,等.废旧黏胶织物水热碳化制备碳微球的研究[J].棉纺织技术,2020,48(5):20-25.
[10]	ZHAI Y,WANG T,ZHU Y,et al.Production of fuel pellets via hydrothermal carbonization of food waste using molasses as a binder[J].Waste Management,2018,77:185-194.
[11]	BARDHAN M,NOVERA T M,TABASSUM M,et al.Co-hydrothermal carbonization of different feedstocks to hydrochar as potential energy for the future world:a review[J].Journal of Cleaner Production,2021,298:126734.
[12]	WANG T F,ZHAI Y B,LI H,et al.Co-hydrothermal carbonization of food waste-woody biomass blend towards biofuel pellets production[J].Bioresource Technology,2018,267:371-377.
[13]	ZHANG X J,ZHANG L,LI A M.Co-hydrothermal carbonization of lignocellulosic biomass and waste polyvinyl chloride for high-quality solid fuel production:hydrochar properties and its combustion and pyrolysis behaviors[J].Bioresource Technology,2019,294:122113.
[14]	LIN Y S,GE Y,XIAO H M,et al.Investigation of hydrothermal co-carbonization of waste textile with waste wood,waste paper and waste food from typical municipal solid wastes[J].Energy,2020,210:118606.
[15]	宋艳培,庄修政,詹昊,等.城市污泥/褐煤共水热碳化产物的热化学转化特性及规律研究[J].化工学报,2020,71(5):2320-2332.
[16]	张晓娟.典型废弃生物质水热碳化提质制备多功能生物炭研究[D].大连:大连理工大学,2019.
[17]	ÇEPELIOGULLAR Ö,PUTUN A E.A pyrolysis study for the thermal and kinetic characteristics of an agricultural waste with two different plastic wastes[J].Waste Management & Research,2014,32(10):971-979.
[18]	吴倩芳,张付申.水热炭化废弃生物质的研究进展[J].环境污染与防治,2012,34(7):70-75.
[19]	宋艳培,庄修政,詹昊,等.污泥与褐煤共水热碳化的协同特性研究[J].化工学报,2019,70(8):3132-3141.
[20]	KARAGOZ S,BHASKAR T,MUTO A,et al.Comparative studies of oil compositions produced from sawdust,rice husk,lignin and cellulose by hydrothermal treatment[J].Fuel,2005,84(7/8):875-884.
[21]	WU M B,ZHANG Z X,WANG X W,et al.Effect of lignin content on hydrothermal liquefication of biomass into oil[Z].2011 International Conference on Materials for Renewable Energy & Environment.Shanghai,China,2011:294-297.
[22]	冯钰.煤热解半焦气化反应活性和燃烧特性研究[D].大连:大连理工大学,2016.
[23]	张灿.油茶壳和油页岩/半焦混合燃烧的实验研究[D].广州:华南理工大学,2017.
[24]	王绪崇,张胜,袁晓君,等.木质素含量对纤维素纳米纤维热稳定性的影响[J].中国造纸,2021,40(7):70-77.
[25]	ZHANG S P,PI M,SU Y H,et al.Physiochemical properties and pyrolysis behavior evaluations of hydrochar from co-hydrothermal treatment of rice straw and sewage sludge[J].Biomass and Bioenergy,2020,140:105664.
[26]	熊绍武,张守玉,吴巧美,等.生物质炭燃烧特性与动力学分析[J].燃料化学学报,2013,41(8):958-965.
[27]	LIN Y S,MA X Q,PENG X W,et al.A mechanism study on hydrothermal carbonization of waste textile[J].Energy & Fuels,2016,30(9):7746-7754.
[28]	ZHENG C P,MA X Q,YAO Z L,et al The properties and combustion behaviors of hydrochars derived from co-hydrothermal carbonization of sewage sludge and food waste[J].Bioresource Technology,2019,285:121347.
[29]	冯锴瑜,孙军,王娟.夏威夷果壳热解特性实验研究[J].科学技术与工程,2020,20(7):2705-2710.