矿物质对热解影响的研究

STUDY OF THE INFLUENCE OF MINERALS ON PYROLYSIS

高先志 张万选 张厚福

Gao Xianzhi Zhang Wanxuan Zhang Houfu

石油大学北京研究生部

Beijing Postgraduate School of Petroleum University

作者选择沉积岩中常见的8种矿物,与有机质(干酪根)混合进行热解试验,以研究矿物质对有机质热解的影响。试验研究表明,这8种矿物中,石英、正长石、斜长石、方解石、白云石对热解基本没有影响;高岭石、伊利石、蒙脱石对热解色谱特征影响较大,与末加入矿物质的纯干酪根热解色谱相比,发生如下变化:(1)烯烃含量剧减;(2)大分子的烷烃减少;(3)小分子的烷基苯增加;(4)挥发性组份增加。

8 kinds of minerals common in sedimentary rocks are selected, which are mixed with organics (kerogen) to make pyrolytical experiments, so as to study the influence of minerals on organic pyrolysis. The experiments revealed that of the eight kinds of minerals, quartz, orthoclase, calcites and dolomites have basically no influence on pyrolysis; while kaolinites, illites and montmorillonites appeared to have much influence upon the characteristics of pyrolytic-chromatography, which in comparing with the characteristics of pyrolytic-chromatography from pure kerogen (without adding any minerals), following changes are recognized. 1. rapid decrease in alkene, 2. decrease in macromolecular alkane, 3. increase in small-molecular alkylbenzen, 4. increase in volatile components.

https://doi.org/10.11781/sysydz199002201