Discussions of Traditional Ignition Temperature Methods with DTA Principle and a New DTG-DTA Method Establishment

Abstract:

Ignition temperature is an important parameter in fuel combustion characteristics research. In this paper, tradition ignition temperature determination methods and their application limitations were discussed by analyzing the DTA curve. All discussions were demonstrated in sweet sorghum fermentation residue particles combustion test. As commonly-used methods were totally established with no consideration of thermal analyzing, the calculating value error were obvious. Taking account detected time t_k (uV>0) and delay time() in DTG (derivative thermogravimetry)-DTA (differential thermal analyses) profile, DTG-DTA delay time method was established in this paper. The calculated values comparison has been performed between new method and TG-DTG dividing point method，the latter was recognized as the most accurate method. It was showed that new method has almost the same ignition temperature to that of TG-DTG dividing point method. While new method needs only half workloads of TG-DTG diving point method. The physical conception of new method is clear and corresponded ignition temperature is accurate. Therefore, new method is suitable for biomass ignition temperature determination.

• Periodical: Advanced Materials Research (Volumes 1008-1009)
• Pages: 833-838
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1008-1009.833
• Online since: August 2014
• Authors: Cheng Guo Fu, Shi Bang Ma, Yi Shui Tian, Dang Qin Xue, Lin Hai Zhang, Shu Lin Hou*
• Keywords: Biomass, Combustion Characteristics, Delay Time, DTA, Ignition Temperature

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