Application of SEM to Analysis Formation Characteristic of Soot Aerosol Emitted from Lump-Coal Pyrolysis in Fixed Bed

摘要：

The objectives of this work are to study the formation characteristic of soot aerosol derived from lump-coal pyrolysis in different experimental conditions in fixed bed. A laboratory-scale movable-fixed bed, water-cooled soot aerosol collection system, and electric reactor have been designed and used in the process. Three kinds of coals,sized at 3-5 mm, have been heated in the experiments. The temperature and residence time of gases in hearth have been regulated. Scanning Electron Microscope (SEM) has been employed to measure shape characteristic of soot aerosol samples. The conclusions can be drawn: the diameters of soot aerosol particles are increased by polymerization reaction with temperature increase; the diameters of soot aerosol particles are increased by polymerization reaction with extension of gases residence time; and more soot particles are agglomerated in high-volatile coal pyrolysis process.

关键词： lump-coal pyrolysis soot fixed bed SEM

作者: A. Q C Wang B. Y H Luo

作者单位: Department of Thermal Engineering, Shanghai Institute of Technology, 120# Caobao Road ,200235 Shangh Institute of Thermal Engineering, Shanghai Jiao Tong University, 800# Dongchuan Road, 200240 Shangha

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）