催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (9): 907-912.

• 研究论文 • 上一篇    下一篇

生物质催化热解制取轻质芳烃

王昶1,郝庆兰1,卢定强2,贾青竹1,李桂菊1,许博1   

  1. 1 天津科技大学环境科学与工程系, 天津 300457; 2 南京工业大学制药与生命科学学院, 江苏南京 210009
  • 收稿日期:2008-09-25 出版日期:2008-09-25 发布日期:2012-07-19

Production of Light Aromatic Hydrocarbons from Biomass by Catalytic Pyrolysis

WANG Chang1*, HAO Qinglan1, LU Dingqiang2, JIA Qingzhu1, LI Guiju1, XU Bo1   

  1. 1 Department of Environmental Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China; 2 College of Life Science and Pharmacy, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2008-09-25 Online:2008-09-25 Published:2012-07-19

PDF

1394

被引次数

36

摘要： 以轻质芳烃苯、甲苯、二甲苯和萘(BTXN)为目的产物,采用双颗粒流化床反应器对3种木材生物质进行了热解实验. 结果表明,木材生物质的初次热解终止温度低,有利于低温催化转化. 生物质中92%的挥发分在673 K时已释放完全,且生物质在初期热解得到的焦油经过二次分解反应可以转化为其它产物,通过有效控制生物质热解二次气相反应,能够改变其产物的分布,从而获得不同的目的产物. 生物质的催化加氢热解实验结果表明,催化剂种类和热解温度对加氢热解产物收率及其分布均有影响, BTXN是热解或加氢热解过程中二次气相反应的中间产物. 为了获得高产率的BTXN, 必须选择加氢活性适度的催化剂. 当CoMo-S/Al2O3催化剂作为流化介质进行加氢热解时,在863 K时, BTXN的收率可达6.3%(干燥无灰质量基准), 而NiMo/Al2O3催化剂表现出了很强的加氢活性, CH4的收率高达99.5%.

关键词: 生物质, 催化热解, 轻质芳烃, 流化床

Abstract: Catalytic pyrolysis of three kinds of biomass was carried out using a dual-part icle powder fluidized bed (PPFB). The results showed that the tar in the volati le matter was transformed to the other pyrolysis products of the lower molecular hydrocarbon compounds at the higher temperature during the secondary reaction. The pyrolysis product distributions and its yield of the biomass could be contro lled by adjusting the secondary reaction parameters.

Key words: biomass, catalytic pyrolysis, light aromatic hydrocarbon, dual-particle powder fluidized bed