Title :
Pyrolysis Characteristics of Lignite in a Fluidized Bed: Influence of Pyrolysis Temperature
Author :
Wen, Liang ; Cen, Jianmeng ; Fang, Mengxiang
Author_Institution :
State Key Lab. of Clean Energy Utilization, Zhejiang Univ., Hangzhou, China
Abstract :
Coal pyrolysis to produce liquid fuel is one of promising way to convert coal. The fast pyrolysis of lignite at different temperatures (450°C, 500°C, 550°C, 600°C, 650°C) in a fluidized bed reactor was studied in this paper. The yield of tar, gas, and semi-coke was investigated at different pyrolysis temperatures. At the same time, the gas and liquid products were analyzed by GC-TCD and gas chromatography-mass spectrometry (GC-MS). The results showed that pyrolysis temperature has a great influence on the tar, gas and char yield. There is a maximum tar yield at temperature 600°C, while the gas yield has the same trend with temperature. However, semi-coke has the opposite trend with increasing temperature. Pyrolysis tar contains a large number of chemical substances which are very good chemical raw materials. Phenols content is the highest in coal tar. The composition of coal tar is also strongly influenced by temperature.
Keywords :
chromatography; fluidised beds; mass spectroscopy; pyrolysis; GC-TCD; chemical substances; coal pyrolysis; fluidized bed reactor; gas chromatography-mass spectrometry; lignite pyrolysis characteristics; phenols content; pyrolysis temperature; temperature 450 C; temperature 500 C; temperature 550 C; temperature 600 C; temperature 650 C; Chemicals; Fluidization; Fuels; Furnaces; Inductors; Nitrogen; Power engineering; Raw materials; Temperature; Thermal engineering; GC–MS; fluidized bed; lignite; pyrolysis;
Conference_Titel :
Energy and Environment Technology, 2009. ICEET '09. International Conference on
Conference_Location :
Guilin, Guangxi
Print_ISBN :
978-0-7695-3819-8
DOI :
10.1109/ICEET.2009.68
