低阶煤显微组分浮选分离试验研究
发布时间：2018-12-14 21:37
【摘要】：煤炭是中国的主要工业原料，并且以低煤化度煤炭为主，中国低阶煤的主要成分中惰质组分含量比较高。例如神府补连塔煤中惰质组含量30%～70%，含量较高的惰性组分，对于煤炭的深加工利用例如炼焦、液化等都会产生不利影响，为了提高煤炭利用效率，应把各显微组分从煤中分出来，并对煤炭的组成、结构进行研究。低阶煤显微组分分离不但能把煤炭加工利用中所出现的问题做出解释，还可以促进煤炭技术发展。当今煤岩学和煤化学研究的重要方向是从低阶煤煤体中分离出各显微组分。显微组分的分离富集，可以解决上述问题的关键和基础。 本文通过手选实验获得较纯的镜质组与惰质组两种煤岩显微组分，从煤中分离获得的各种煤岩单组分，对显微组分组成、结构和性质进行研究。本文做了显微组分的工业分析、元素分析，，并对两种组分的接触角进行研究以及利用拉曼光谱、红外光谱、热重分析等多种手段分析煤岩两种显微组分的区别。 通过以上实验研究得到两种显微组分上的差异，最后在做了单因素实验以及正交实验研究之后发现最佳浮选分离显微组分的工艺条件为：浮选单因素进气量、起泡剂用量、捕收剂用量、转速、表面活性剂用量分别为，120L/h、0.12g/L、0.6g/L、1600r/min、0.12g/L时，含量最多的成分是浮物密度级小于1.35g/cm3的成分，说明浮选效果是比较好的而且浮物中镜质组含量较高；由浮选正交试验结果表分析可知试验最佳因素组合为第十一组试验进气量、起泡剂、浮选捕收剂、浮选机的转速、浮选表面活性剂用量依次是120L/h、0.12g/L、1.2g/L、1800r/min、0.16g/L时。
[Abstract]:Coal is the main industrial raw material in China, and the main content of inertinite in the main components of low rank coal in China is relatively high. For example, in Shenfu Bulianta coal, the content of 30% or 70% of the inertinite group, and the higher content of the inert component, will have adverse effects on the further processing and utilization of coal, such as coking and liquefaction, etc., in order to improve the efficiency of coal utilization, The macerals should be separated from coal and the composition and structure of coal should be studied. The separation of low rank coal macerals can not only explain the problems in coal processing and utilization, but also promote the development of coal technology. At present, the important direction of coal petrology and coal chemistry is to separate the macerals from low rank coal bodies. The separation and enrichment of macerals can solve the problems mentioned above. In this paper, two kinds of coal and rock macerals, vitrinite and inertinite, are obtained by hand selection experiment. The composition, structure and properties of each kind of coal and rock are studied. In this paper, industrial analysis, elemental analysis, contact angle analysis of the two components and analysis of the differences between the two macerals by Raman spectrum, infrared spectroscopy and thermogravimetric analysis are carried out. The differences between the two kinds of macerals were obtained through the above experimental studies. Finally, after single factor experiments and orthogonal experiments, it was found that the optimum technological conditions for separation of macerals by flotation were as follows: air intake of single factor, amount of foaming agent, When the amount of collector, the speed, and the amount of surfactant are 0.12g / L 0.12g / L 0.16g / L 0.12g / L, the most important component is that the density of floatation is lower than that of 1.35g/cm3. It shows that the flotation effect is better and the vitrinite content in the floatation is higher. According to the analysis of the results of orthogonal flotation test, the best test factors are as follows: the eleventh group of experimental air intake, foaming agent, flotation collector, the speed of flotation machine, the dosage of floatation surfactant is 120 L / h ~ (-1) 0.12 g / L, 1.2 g / L 1800r / min 0.16g / L.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD923;TD94
本文编号：2379364
[Abstract]:Coal is the main industrial raw material in China, and the main content of inertinite in the main components of low rank coal in China is relatively high. For example, in Shenfu Bulianta coal, the content of 30% or 70% of the inertinite group, and the higher content of the inert component, will have adverse effects on the further processing and utilization of coal, such as coking and liquefaction, etc., in order to improve the efficiency of coal utilization, The macerals should be separated from coal and the composition and structure of coal should be studied. The separation of low rank coal macerals can not only explain the problems in coal processing and utilization, but also promote the development of coal technology. At present, the important direction of coal petrology and coal chemistry is to separate the macerals from low rank coal bodies. The separation and enrichment of macerals can solve the problems mentioned above. In this paper, two kinds of coal and rock macerals, vitrinite and inertinite, are obtained by hand selection experiment. The composition, structure and properties of each kind of coal and rock are studied. In this paper, industrial analysis, elemental analysis, contact angle analysis of the two components and analysis of the differences between the two macerals by Raman spectrum, infrared spectroscopy and thermogravimetric analysis are carried out. The differences between the two kinds of macerals were obtained through the above experimental studies. Finally, after single factor experiments and orthogonal experiments, it was found that the optimum technological conditions for separation of macerals by flotation were as follows: air intake of single factor, amount of foaming agent, When the amount of collector, the speed, and the amount of surfactant are 0.12g / L 0.12g / L 0.16g / L 0.12g / L, the most important component is that the density of floatation is lower than that of 1.35g/cm3. It shows that the flotation effect is better and the vitrinite content in the floatation is higher. According to the analysis of the results of orthogonal flotation test, the best test factors are as follows: the eleventh group of experimental air intake, foaming agent, flotation collector, the speed of flotation machine, the dosage of floatation surfactant is 120 L / h ~ (-1) 0.12 g / L, 1.2 g / L 1800r / min 0.16g / L.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD923;TD94
【参考文献】
相关期刊论文 前1条
1 马伟竣;;鄂尔多斯盆地延川南2号煤层煤相分析[J];中国煤层气;2014年02期
本文编号：2379364
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