New approach to the utilization of microwave thermal energy: Desulfurization and decarburization of spent catalyst via microwave treatment
New approach to the utilization of microwave thermal energy: Desulfurization and decarburization of spent catalyst via microwave treatment
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微波热能利用新途径：微波处理废催化剂脱硫脱碳
DOI：
10.1016/j.powtec.2018.07.085
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发表时间：
2018-10
影响因子：
5.2
通讯作者：
曲雯雯
中科院分区：
文献类型：
--
作者：
叶小磊;曲雯雯
由于废催化剂表面的碳和硫化物不利于金属的浸出，因此脱硫脱碳工艺是从废催化剂中回收有价金属的关键问题。本文介绍了一种微波加热焙烧废催化剂的方法。采用微波加热回收钼的方法对废催化剂进行了脱硫脱碳研究。研究了不同反应条件(温度、保温时间、微波功率、废催化剂粒度)对脱硫脱碳和钼浸出的影响。当微波功率为960 W，反应温度为650 °C，反应时间为45 min时，200目废催化剂的脱碳率和脱硫率分别达到96.7%和99.7%。结果表明，脱硫脱碳后的样品在XPS和X射线衍射谱中没有发现CoMoO4等复杂金属氧化物，碳酸钠浸出液浸出了96%的钼。该方法不仅促进了快速脱硫脱碳，而且不会产生任何复杂的金属氧化物，从而促进了废催化剂中有价金属的回收。
Desulfurization and decarburization processes are key issues in the recovery of valuable metals from spent industrial catalysts because the carbon and sulfide on the surface of the spent catalyst are not conducive to metal leaching. This manuscript addresses the development of a process of roasting spent catalyst with microwave heating. In the present investigation, desulfurization and decarburization of the spent catalyst were studied by treating with microwave heating for the recovery of molybdenum. We also studied the effect of various reaction conditions (temperature, holding time, microwave power, and granularity of the spent catalyst) on desulfurization and decarburization, and the leaching of molybdenum. The maximum desulfurization (96.7%) and decarburization (99.7%) were achieved when the spent catalyst (200 mesh) was treated using microwave power (960 W) at a temperature of 650 °C for 45 min. The results show that no complex metal oxides such as CoMoO4were found in the XPS and XRD spectra of the samples after desulfurization and decarburization and that >96% of molybdenum is leached with a sodium carbonate solution. This method not only promotes rapid desulfurization and decarburization but also does not produce any complex metal oxides, thereby promoting the recovery of valuable metals in spent catalysts.
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影响因子：
--
作者：
Chen, Y;Feng, QM;Lu, YP
通讯作者：
Lu, YP
影响因子：
4.7
作者：
L. Zeng;C. Cheng
通讯作者：
L. Zeng;C. Cheng
DOI：
10.4028/www.scientific.net/amr.71-73.541
发表时间：
2009-05
期刊：
Advanced Materials Research
影响因子：
--
作者：
L. Macaskie;I. Mikheenko;P. Yong;K. Deplanche;A. Murray;M. Paterson-Beedle;V. Coker;C. Pearce;R. S. Cutting;R. Pattrick;D. Vaughan;G. V. D. Laan;Jonathan R. Lloyd
通讯作者：
L. Macaskie;I. Mikheenko;P. Yong;K. Deplanche;A. Murray;M. Paterson-Beedle;V. Coker;C. Pearce;R. S. Cutting;R. Pattrick;D. Vaughan;G. V. D. Laan;Jonathan R. Lloyd
影响因子：
6.4
作者：
Hong Yi-du;Lin Bai-quan;Li He
通讯作者：
Li He
影响因子：
13.6
作者：
Yi‐Chieh Lai;Wen‐Jhy Lee;Kuo-Lin Huang;Chu Wu
通讯作者：
Yi‐Chieh Lai;Wen‐Jhy Lee;Kuo-Lin Huang;Chu Wu