水蒸汽催化重整生物油模型化合物制氢研究

发布时间：2018-09-06 15:30

【摘要】：氢能是一种清洁的能源。生物质裂解得生物油,并对其进行水蒸汽催化重整制氢。本文主要研究在固定床反应器上,不同温度、时间、S/C和WHSV条件下,以单一模型化合物(丙三醇、间甲酚)和混合型模型化合物(乙酸、乙二醇、苯酚和丙酮的混合物)作为生物油模型化合物,进行水蒸汽催化重整生物油模型化合物制氢研究,探索最佳反应条件。利用最小Gibbs自由能法,研究水蒸汽重整丙三醇热力学平衡,反应条件:温度范围600～850℃、进料S/C值大于6、压力为1atm时,最为适宜。采用浸渍法制备Co-Fe/HZSM-5催化剂,对其进行XRD、SEM和TG等表征,进行丙三醇水蒸汽催化重整制氢实验。结果表明,Co0.75-Fe0.25/HZSM-5催化剂的催化性能最佳,工艺条件:温度600℃、S/C 8:1和进料空速1.94 h-1,此时,氢气产率最高,可达52%。选取乙酸、乙二醇、苯酚和丙酮的混合物为生物油模型化合物,Co-Fe/HZSM-5为催化剂,进行水蒸汽催化重整混合型模型化合物制氢。结果表明,温度650℃、WHSV2h-1和S/C 10,此时氢气产率最大,约为57%。采用共沉淀法制备Ni/HZSM-5、Fe/HZSM-5和Ni-Fe/HZSM-5催化剂,并利用XRD、SEM和BET等测试手段对其表征,在固定反应器上进行水蒸汽催化重整间甲酚制氢研究。结果表明,Ni-Fe/HZSM-5催化效果最佳。最优反应条件:温度650℃、时间120 min和S/C 8,此时,氢气产率最高,可达54%。
[Abstract]:Hydrogen energy is a clean energy source. Biomass was pyrolyzed to produce bio-oil and steam catalytic reforming was carried out to produce hydrogen. In this paper, a single model compound (glycerol, m-cresol) and mixed model compound (acetic acid, ethylene glycol) were used in a fixed bed reactor at different temperature, time and WHSV. The mixture of phenol and acetone) was used as a model compound of bio-oil to study the hydrogen production of bio-oil model compound catalyzed by steam reforming and to explore the best reaction conditions. The thermodynamic equilibrium of glycerol in steam reforming was studied by using the minimum Gibbs free energy method. The reaction conditions were as follows: the temperature range was 600 ~ 850 鈩，

本文编号：2226779