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›› 2002, Vol. 2 ›› Issue (1): 0-0.

• 1 •    

难选氧化锌矿氨浸动力学

朱云,胡汉,苏云生,杨保民   

  1. 昆明理工大学材料与冶金工程学院,云南 昆明 650093
  • 出版日期:2002-02-20 发布日期:2002-02-20

Catalytic Cracking of Bio-oil from Biomass Pyrolysis

GUO Xiao-ya, YAN Yong-jie, LI Ting-chen, REN Zheng-wei, YUAN Chuan-min   

  1. Department of Metallurgy, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
  • Online:2002-02-20 Published:2002-02-20

摘要: 兰坪氧化锌矿氨浸的动力学实验表明,氧化锌矿的氨浸动力学遵从不生成固体产物层的未反应核缩减模型,即符合1–(1–a)1/3=[MkCn/(brd0)]t方程. 通过研究氨水的浓度、温度以及矿石粒度对难选氧化锌矿浸出速率的影响,发现氧化锌矿氨浸反应为一级反应,得到反应的活化能为11.1 kJ/mol,为边界层扩散控制.

关键词: 氧化锌矿, 氨浸, 动力学, 一级反应, 活化能

Abstract: Tests indicate that the kinetics of leaching poorly-floated zinc–oxide–ore with ammonia comply with the shrinking un-reacted core model without solid product. By investigating the effects of ammonia concentration, temperature and size of ore on the leaching rate, it was suggested that the leaching of poorly-floated zinc-oxide-ore with ammonia is one of the first order reaction. Its activation energy is 11.1 kJ/mol, indicating that the external mass transfer was the rate controlling step.

Key words: pyrolysis bio-oil, fixed-bed reactor, catalytic cracking, HZSM-5 catalyst

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