Three-dimensional simulation of a novel microwave-assisted heating device for methyl ricinoleate pyrolysis
Three-dimensional simulation of a novel microwave-assisted heating device for methyl ricinoleate pyrolysis
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新型微波辅助蓖麻油酸甲酯热解加热装置的三维模拟
DOI：
10.1016/j.applthermaleng.2019.03.003
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发表时间：
2019-05
影响因子：
6.4
通讯作者：
Jianbing Ji
中科院分区：
文献类型：
--
作者：
Shangzhi Yu;Ying Duan;Xing Zhou;Qinglong Xie;Gaoxiang Zeng;Xiaoning Mao;Xiaojiang Liang;Meizhen Lu;Yong Nie;Jianbing Ji
在热解中，稳定的高温反应位置和原料的快速且均匀的加热是特别重要的。以碳化硅（SiC）为微波吸收剂，采用微波辅助加热（MAH）与雾化进料相结合的新型装置，对蓖麻油酸甲酯（MR）进行了连续热解研究。采用三维数值模拟的方法研究了马来酸酐（MAH）装置中微波加热和磁流变热裂解的传热过程。考察了微波加热过程中加热功率、加热孔数、进料流量、进料方式和MR平均液滴直径等因素对热解过程的影响。采用不同数量的通气孔可以获得均匀的SiC床面温度分布。微波功率越大，能量利用率越高，在1000 W时能量利用率最高，可达81%。在稳定的高温床面条件下，MR的最大流量可达40 mL/min。雾化加料方式有利于SiC床层温度的均匀性。雾化MR液滴的加热速率约为50000 °C/s，明显高于滴落MR液滴的加热速率。结果表明,模拟计算结果与实际焊接结果比较吻合.结果表明，MAH与雾化加料相结合，可以提供稳定的高温反应场所，提高原料的快速均匀加热。
A stable high-temperature reaction site and the rapid and uniform heating of the feedstocks are particularly important in pyrolysis. A novel device consisting of microwave-assisted heating (MAH) coupled with atomization feeding was used for continuous pyrolysis of methyl ricinoleate (MR) using silicon carbide (SiC) as the microwave absorbent bed. The heat transfer in microwave heating and MR pyrolysis in MAH device was studied by three-dimensional simulation. The effects of number of ports and heating power in microwave heating process, flow rate, feed mode and average droplet diameter of MR in pyrolysis process were investigated. Uniform temperature distribution of SiC bed surface was obtained with different numbers of ports. Higher energy efficiency was obtained at higher microwave power, with the highest value reaching 81% at 1000 W. The maximum flow rate of MR could reach 40 mL/min at a stable high-temperature bed surface. The atomization feed mode was beneficial to the temperature uniformity of SiC bed. The heating rate of atomized MR droplets was about 50000 °C/s, significantly higher than that of dropped MR droplets. The simulated results agreed well with the experimental results. It indicated the MAH coupled with atomization feeding could provide a stable high-temperature reaction site and increase the rapid and uniform heating of the feedstocks.
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影响因子：
2.2
作者：
Fan, Han-lin;Cheng, Wen-long;Zhao, Rui;Liu, Qi-nie
通讯作者：
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影响因子：
11.4
作者：
Borges, Fernanda Cabral;Du, Zhenyi;Ruan, Roger
通讯作者：
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影响因子：
3.7
作者：
Chatterjee, A;Basak, T;Ayappa, KG
通讯作者：
Ayappa, KG
影响因子：
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作者：
B. Dutta;S. Dev;V. Raghavan
通讯作者：
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微波辅助加热结合雾化进料热解蓖麻油酸甲酯
影响因子：
6
作者：
Yu, Shangzhi;Duan, Ying;Ji, Jianbing
通讯作者：
Ji, Jianbing