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A study on mixed coal simulation soft layer of gas adsorption

Journal of coal Science & Engineering(China) 2011年第3期17卷 290-293页

作者： LI Shu-gang ZHAO Peng-xiang PAN Hong-yu HUANG Jin-xing School of Energy Xi＇an University of Science and Technology Xi＇an 710054 China

Based on the single coal adsorption gas, hard coal and soft coal of intake airway in Shanxi Heshun Tianchi coal Mine were chosen to simulate the soft coal seams in coalbed as those in different qualities are mixed with delamination. Experiments on characteristics of adsorption gas of hard coal and soft coal in different quality ratios were done according to the Langmuir single molecule layer absorption theory. Gas constant mensuration instrument WY-98B was used during the experiments. Isothermal adsorption curves, adsorption constants a and b of the mixed coal samples in different quality ratios were established for qualitative and quantitative analysis. The relationship curves of adsorption quantity with changing pressure and variation equation of adsorption constants a, b with changing thickness ratio shows that the thickness of soft layer and hard coal approximately equal, thus resulting in outburst at greatest risk, then a theoretical base for the mechanism of coal and gas outburst has been put forward and a technical support scheme for engineering control of gas outburst is laid out.

关键词： mixed coal soft layer coal and gas outburst adsorption

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Guidance method to use mixed coal in blending for coking

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Baosteel Technical Research 2010年第S1期4卷 3-页

作者： YAO Boyuan Technology Institute of HaiNan University,Haikou 570228,Hainan,China

Based on the principle that the adaptation can be reflected by the overlap of reflectance distribution peaks,the effect of various types mixed coal for coking is *** on the action of the vitrinite of different reflectance range and the adaptation,a new method for guidance blending coal is *** simulation,blending coal using the software of HD automatic microscope photometer,makes the synthetic blending coal reflectance distribution map to nothing notch wide single peak flat-shaped symmetrical distribution,blending coal random reflectance meets 1.1 - 1.2,the standard deviation meets 0.35 - *** is based on the conditions that active component in the blending is *** this method,the mixed coal can be used as much as possible and play a positive *** problem about implementation process is discussed.

关键词： mixed coal synthesis reflectance distribution map blending coal

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