太阳能反应器内废盐有机杂质热解特性研究

TK513; 为了解决有机杂质阻碍废盐回收利用的问题,基于槽式太阳能聚光器和管式反应炉,建立有机物热解反应器模型,采用光热耦合方法研究了反射镜深度、焦距和反应器外部直径对系统能量分布及有机物热解特性的影响.研究结果表明:随着反射镜深度从100 mm增加到1 000 mm,聚光器平均聚光比增加7.34,但光学效率降低0.52%,反应器最高温度和最低温度均呈上升趋势,温差在100 K左右,热解反应时间缩短,系统热效率提高约10.71%;随着反射镜焦距从100 mm增加到1 000 mm,热流密度更加集中,最大聚光比增大21.03,光学效率降低0.53%,反应器最低温度变化不大,但最高温度和温差呈线...

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Published in西安交通大学学报 Vol. 59; no. 2; pp. 115 - 126
Main Authors 董镇鲛, 陶于兵, 叶豪, 何源, 贾浩洋
Format Journal Article
LanguageChinese
Published 西安交通大学未来技术学院,710049,西安%西安交通大学未来技术学院,710049,西安 01.02.2025
西安交通大学热流科学与工程教育部重点实验室,710049,西安%西安交通大学热流科学与工程教育部重点实验室,710049,西安
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ISSN0253-987X
DOI10.7652/xjtuxb202502012

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Abstract TK513; 为了解决有机杂质阻碍废盐回收利用的问题,基于槽式太阳能聚光器和管式反应炉,建立有机物热解反应器模型,采用光热耦合方法研究了反射镜深度、焦距和反应器外部直径对系统能量分布及有机物热解特性的影响.研究结果表明:随着反射镜深度从100 mm增加到1 000 mm,聚光器平均聚光比增加7.34,但光学效率降低0.52%,反应器最高温度和最低温度均呈上升趋势,温差在100 K左右,热解反应时间缩短,系统热效率提高约10.71%;随着反射镜焦距从100 mm增加到1 000 mm,热流密度更加集中,最大聚光比增大21.03,光学效率降低0.53%,反应器最低温度变化不大,但最高温度和温差呈线性增长,温差从31.45 K增大到222.56 K,系统反应速率和热效率升高;随着反应器外部直径从14 mm增加到104 mm,热流密度降低,平均聚光比从34.75减小到4.71,光学效率提高0.53%,温差从52.13 K升高到114.32 K,反应速率和热效率均降低,单位体积废盐的热解时间从5.26 s·cm-3减小到1.29 s·cm-3.研究结果对废盐热解反应器的参数设计和优化具有重要意义.
AbstractList TK513; 为了解决有机杂质阻碍废盐回收利用的问题,基于槽式太阳能聚光器和管式反应炉,建立有机物热解反应器模型,采用光热耦合方法研究了反射镜深度、焦距和反应器外部直径对系统能量分布及有机物热解特性的影响.研究结果表明:随着反射镜深度从100 mm增加到1 000 mm,聚光器平均聚光比增加7.34,但光学效率降低0.52%,反应器最高温度和最低温度均呈上升趋势,温差在100 K左右,热解反应时间缩短,系统热效率提高约10.71%;随着反射镜焦距从100 mm增加到1 000 mm,热流密度更加集中,最大聚光比增大21.03,光学效率降低0.53%,反应器最低温度变化不大,但最高温度和温差呈线性增长,温差从31.45 K增大到222.56 K,系统反应速率和热效率升高;随着反应器外部直径从14 mm增加到104 mm,热流密度降低,平均聚光比从34.75减小到4.71,光学效率提高0.53%,温差从52.13 K升高到114.32 K,反应速率和热效率均降低,单位体积废盐的热解时间从5.26 s·cm-3减小到1.29 s·cm-3.研究结果对废盐热解反应器的参数设计和优化具有重要意义.
Abstract_FL To effectively remove organic impurities from waste salt for better waste salt recycling and environmental protection,a pyrolysis reactor model based on a parabolic trough concentrator and a tubular reactor was established in this paper.The effects of reflector depth,focal length,and reactor outer diameter on the energy distribution and the organics pyrolysis characteristics were investigated through photothermal coupling.The results show that as the reflector depth increased from 100 mm to 1000 mm,the average concentration ratio of the concentrator increased by 7.34 while the optical efficiency decreased by 0.52%;both the maximum temperature Tmax and minimum temperature Tmin of the reactor increased,with a temperature difference △T of the reactor about 100 K;the pyrolysis reaction time was shortened,and the thermal efficiency of the system increased by about 10.71%.As the focal length increased from 100 mm to 1 000 mm,the heat flow density became more concentrated,resulting in a 21.03 increase in the maximum concentration ratio and a 0.53%decrease in optical efficiency;the Tmin did not change significantly,but the Tmax and △T exhibited a linear increase,with the △T increasing from 31.45 K to 222.56 K;the system reaction rate and thermal efficiency increased.As the reactor outer diameter increased from 14 mm to 104 mm,the heat flow density decreased,the Rave decreased from 34.75 to 4.71,and the optical efficiency increased by 0.53%.The Tmax and Tmin exhibited a decreasing trend,while △T increased from 52.13 K to 114.32 K.The reaction rate and thermal efficiency decreased,but the pyrolysis time of per unit volume waste salt decreased from 5.26 s·cm-3 to 1.29 s·cm-3.The study results presented in this paper are significant for the parameter design and optimization of solar waste salt pyrolysis reactor.
Author 何源
陶于兵
董镇鲛
叶豪
贾浩洋
AuthorAffiliation 西安交通大学未来技术学院,710049,西安%西安交通大学未来技术学院,710049,西安;西安交通大学热流科学与工程教育部重点实验室,710049,西安%西安交通大学热流科学与工程教育部重点实验室,710049,西安
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Author_FL HE Yuan
TAO Yubing
YE Hao
DONG Zhenjiao
JIA Haoyang
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DocumentTitle_FL Pyrolysis Characteristics of Waste Salt Organic Impurities in Solar Reactors
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Keywords 有机物热解
solar reactor
organics pyrolysis
太阳能反应器
energy distribution
photothermal coupling
光热耦合
能量分布
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Snippet TK513; 为了解决有机杂质阻碍废盐回收利用的问题,基于槽式太阳能聚光器和管式反应炉,建立有机物热解反应器模型,采用光热耦合方法研究了反射镜深度、焦距和反应器外部直径对系统能量分布及有机物热解特性的影响.研究结果表明:随着反射镜深度从100 mm增加到1 000...
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Title 太阳能反应器内废盐有机杂质热解特性研究
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