能源化学(英文版)

能源化学(英文) ›› 2013, Vol. 22 ›› Issue (4): 639-644.

• Articles • 上一篇    下一篇

Production of hydrogen and syngas via pyrolysis of bagasse in a dual bed reactor

Morteza Shojab, Mokhtar Akhond Babatabara, Ahmad Tavasolia, Abtin Ataeib   

  1. a. Department of Applied Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran;
    b. Department of Energy Engineering, Science and Research Branch of Islamic Azad University, Tehran, Iran
  • 收稿日期:2012-07-01 修回日期:2012-09-14 出版日期:2013-07-20 发布日期:2013-07-27
  • 通讯作者: Ahmad Tavasoli

Production of hydrogen and syngas via pyrolysis of bagasse in a dual bed reactor

Morteza Shojab, Mokhtar Akhond Babatabara, Ahmad Tavasolia, Abtin Ataeib   

  1. a. Department of Applied Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran;
    b. Department of Energy Engineering, Science and Research Branch of Islamic Azad University, Tehran, Iran
  • Received:2012-07-01 Revised:2012-09-14 Online:2013-07-20 Published:2013-07-27

摘要： Pyrolysis of bagasse followed by thermal cracking of tar was carried out at atmospheric pressure using a dual bed reactor. The first bed was used for the pyrolysis and the second bed was used for thermal cracking of tar. Iron fillings were used as the packed bed material in the second bed. The effects of reaction time (20 to 40 min), reactor temperature (600 to 900 ℃) and packed bed height (40-100 mm) on the product (char, tar and gas) yield and gas (H2, CO, CO2, CH4, CnHm) composition were studied. Over the ranges of the experimental conditions used, the operating conditions were optimized for pyrolysis temperature around 850 ℃, a reaction time of 30 min and packed bed height of 100 mm, thus we could obtain a gas richer in hydrogen and carbon monoxide and poorer in carbon dioxide and hydrocarbons. It was observed that compared with single bed process, dual bed process increased the gas yield from 0.397 to 0.750 m3/kg and decreased the tar yield from 0.445 to 0.268 g/g while the heating value of the product gas remained almost constant (10—11 MJ/m3).

关键词: bagasse, dual bed reactor, hydrogen, syngas, yield

Abstract: Pyrolysis of bagasse followed by thermal cracking of tar was carried out at atmospheric pressure using a dual bed reactor. The first bed was used for the pyrolysis and the second bed was used for thermal cracking of tar. Iron fillings were used as the packed bed material in the second bed. The effects of reaction time (20 to 40 min), reactor temperature (600 to 900 ℃) and packed bed height (40-100 mm) on the product (char, tar and gas) yield and gas (H2, CO, CO2, CH4, CnHm) composition were studied. Over the ranges of the experimental conditions used, the operating conditions were optimized for pyrolysis temperature around 850 ℃, a reaction time of 30 min and packed bed height of 100 mm, thus we could obtain a gas richer in hydrogen and carbon monoxide and poorer in carbon dioxide and hydrocarbons. It was observed that compared with single bed process, dual bed process increased the gas yield from 0.397 to 0.750 m3/kg and decreased the tar yield from 0.445 to 0.268 g/g while the heating value of the product gas remained almost constant (10—11 MJ/m3).

Key words: bagasse, dual bed reactor, hydrogen, syngas, yield