變氧濃度環(huán)境下煤自燃臨界溫度及影響因素分析
[Abstract]:In order to study the effect of oxygen concentration on the critical temperature in the process of spontaneous combustion of different kinds of coal, three kinds of coal samples with metamorphism degree were selected. The critical temperature values and ranges of the experimental coal samples at 10%, 15% and 21% oxygen supply concentrations were determined by using the temperature programmed data of the small samples and the index gas method, oxygen consumption rate method and intersection temperature method, respectively. the critical temperature values and ranges of the experimental coal samples were determined by using the index gas method, the oxygen consumption rate method and the intersection temperature method, respectively. The test results show that the critical temperature measured by intersection temperature is basically consistent with that measured by adiabatic oxidation method, and the experimental period is short; the critical temperature of coal spontaneous combustion decreases with the increase of oxygen concentration; and the critical temperature error of coal measured by intersection temperature method is small, which is an ideal method to measure the critical temperature of coal spontaneous combustion.
【作者單位】: 中煤科工集團(tuán)西安研究院;西安科技大學(xué)安全學(xué)院;
【基金】:國(guó)家自然科學(xué)基金資助(51504187) 陜西省自然科學(xué)基金資助(2014JM7276)
【分類(lèi)號(hào)】:TD752.2
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