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镍基非对称中空纤维膜用于乙醇自热重整制氢
引用本文:陈晨,王明明,王志刚,谭小耀. 镍基非对称中空纤维膜用于乙醇自热重整制氢[J]. 化工学报, 2021, 72(Z1): 482-493. DOI: 10.11949/0438-1157.20201771
作者姓名:陈晨  王明明  王志刚  谭小耀
作者单位:天津工业大学化学与化工学院,天津 300387
基金项目:国家自然科学基金项目(91745116);天津市自然科学基金项目(17JCZDJC36900)
摘    要:采用纺丝-烧结技术制备了具有内表面致密皮层的外支撑式金属镍非对称中空纤维膜,并用于乙醇自热重整(EATR)制氢,研究了温度、进料流速、吹扫气流速、水醇比(S/C)以及氧醇比(O2/C)等操作条件对膜制氢性能的影响。结果表明,金属镍非对称中空纤维膜既具有优异的EATR催化活性,又有良好的透氢性能。在500~1000℃、S/C=4、O2/C=0.8的条件下乙醇可完全转化,H2产率和H2渗透通量可分别达到81.59%和13.99 mmol/(m2·s),增加进料中氧气含量可显著抑制膜表面积炭,但同时也会降低氢气产率和一氧化碳选择性。

关 键 词:乙醇自热重整  制氢    中空纤维  催化  
收稿时间:2020-12-09

Hydrogen production by ethanol autothermal reforming using nickel-based asymmetric hollow fiber membranes
CHEN Chen,WANG Mingming,WANG Zhigang,TAN Xiaoyao. Hydrogen production by ethanol autothermal reforming using nickel-based asymmetric hollow fiber membranes[J]. Journal of Chemical Industry and Engineering(China), 2021, 72(Z1): 482-493. DOI: 10.11949/0438-1157.20201771
Authors:CHEN Chen  WANG Mingming  WANG Zhigang  TAN Xiaoyao
Affiliation:Department of Chemistry and Chemical Engineering, Tiangong University, Tianjin 300387, China
Abstract:Metallic nickel asymmetric hollow fiber membranes with an inner dense skin on the outer porous layer were fabricated by spinning-phase inversion technique. The membrane was used to produce hydrogen via autothermal reforming of ethanol. The operating conditions including temperature, feeding flow rate, sweeping rate, steam-to-carbon molar ratio (S/C) and oxygen-to-carbon ratio (O2/C) were investigated and optimized. The results have shown that the asymmetric nickel hollow fibers have excellent catalytic activity to EATR and high hydrogen permeation performance as well. Operated at 500—1000℃ with a steam-to-carbon ratio of 4 and an oxygen-to-carbon molar ratio of 0.8, the ethanol was completely consumed with 81.59% hydrogen yield, and the hydrogen permeation rate reached up to 13.99 mmol/(m2·s). With the increase of oxygen concentration in feed, the carbon deposition on the membrane surface was remarkably inhibited, while the hydrogen yield and CO selectivity were decreased.
Keywords:ethanol autothermal reforming  hydrogen production  membrane  hollow fiber  catalysis  
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