Coal Quality Characteristics and Inflaming Retarding Mode of Indonesia Coal in the Large Power Statdion

2013 ◽  
Vol 395-396 ◽  
pp. 223-229
Author(s):  
Gang Chen ◽  
Jian Lu ◽  
Wei Su ◽  
Hong Liang Zhang
Keyword(s):  
Power Plant ◽  
Spontaneous Combustion ◽  
Quality Characteristics ◽  
Low Temperature Oxidation ◽  
Coal Quality ◽  
Large Power ◽  
Temperature Oxidation ◽  
Advantages And Disadvantages ◽  
Development Direction ◽  
Oxidation Characteristic

this paper introduces the main parameters of the mining and arrival coal quality, and analyzes the low temperature oxidation characteristic of Indonesia coal through thermogravimetric test; meanwhile, the mechanism of spontaneous combustion of Indonesia coal is clarified, the advantages and disadvantages of various inflaming retarding methods are compared, and the development direction of inflaming retarding of Indonesia coal in the power plant is pointed out.

B-Mode Grey Relational Analysis of Surface Functional Groups Change Rules in Coal Spontaneous Combustion

2011 ◽  
Vol 236-238 ◽  
pp. 762-766 ◽  
Author(s):  
Wei Qing Zhang ◽  
Shu Guang Jiang ◽  
Lan Yun Wang ◽  
Zheng Yan Wu ◽  
Hao Shao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Functional Groups ◽  
Grey Relational Analysis ◽  
Spontaneous Combustion ◽  
Surface Functional Groups ◽  
Low Temperature Oxidation ◽  
Coal Spontaneous Combustion ◽  
Temperature Oxidation ◽  
Relational Analysis ◽  
Grey Relational

Based on the results of Fourier Transform Infrared Spectroscopy (FTIR) test of surface functional groups of different coal samples in low-temperature oxidation, the quantitative variation between functional groups and temperature was analyzed by B-mode grey relational analysis. According to the grey B-mode degrees and orders, a summary is given that: 1)the aromatic ketone and aldehyde carbonyl groups are mostly produced during the process of coal oxidation and the oxygen-containing functional groups existed mainly in the form of stable ether bond; 2)the methylene groups make major contribution to coal spontaneous combustion, so that the methylene structures should be disposed firstly in order to suppress coal spontaneous combustion effectively; 3)the degree range of gas coal is the largest, which shows that the process of gas coal spontaneous combustion is mostly affected by active groups to some extent. These quantitative results will be helpful to find the functional groups affecting deeply the process of low-temperature oxidation of coal.

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