Development of secondary chamber for tar cracking_improvement of wood pyrolysis performance in pre-vacuum chamber

10th International Conference Numerical Analysis in Engineering

数学;工业技术

Siahaan, S.^1 ; Homma, H.^1,2 ; Homma, H.^1

Department of Mechanical Engineering, University of Sumatera Utara, Jl. Almamater, Medan, Indonesia^1

National Institute of Technology, Matsue College, Matsue, Japan^2

关键词: Energy crisis;    Engine generator;    Secondary chamber;    Tar cracking;    Vacuum chambers;    Wood pyrolysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/308/1/012047/pdf
DOI  :  10.1088/1757-899X/308/1/012047

学科分类：工业工程学

来源: IOP

【 摘 要 】

Energy crisis and global warming, in other words, climate change are critical topics discussed in various parts of the world. Global warming primarily result from too much emission of carbon dioxide (CO2) in the atmosphere. To mitigate global warming, or climate change and improve electrification in rural areas, wood pyrolysis technology is developed in a laboratory scale, of which gases are directly applicable to the gas engine generator. Our laboratory has developed a prototype of wood pyrolysis plant with a pre-vacuum chamber. However, tar yield was around 40 wt% of feedstock. This research aims to reduce tar yield by secondary tar cracking. For the secondary tar cracking, a secondary pre-vacuum chamber is installed after primary pre-vacuum chamber. Gases generated in the primary pre-vacuum chamber are lead into the secondary chamber that is heated up to 1000 K. This paper reports performance of the secondary chamber for secondary tar cracking in homogeneous mode and heterogeneous mode with char.