Mineral matter and trace-element vaporization in a laboratory-pulverized coal combustion system.
Mineral matter and trace-element vaporization in a laboratory-pulverized coal combustion system.
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DOI：
10.1021/es00105a009
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发表时间：
1982-11
影响因子：
11.4
通讯作者：
R. J. Quann;M. Neville;M. Janghorbani;C. Mims;A. Sarofim
中科院分区：
文献类型：
--
作者：
R. J. Quann;M. Neville;M. Janghorbani;C. Mims;A. Sarofim
在两个温度下，2050和2450，燃烧蒙大拿褐煤产生的飞灰的组成和粒度分布进行了测定。灰分呈双峰粒度分布，亚微米级显著富集挥发性痕量物质。亚微米气溶胶的量随着燃烧温度的升高而显着增加，从2050 K时煤的ASTM灰值的4%增加到2450 K时的20%，支持了以下假设：较小灰颗粒中挥发性更强的物质的富集是由于矿物成分的蒸发和再冷凝过程。
The composition and size distribution of fly ash produced by burning a Montana lignite at two temperatures, 2050 and 2450, were determined. The ash showed a bimodal size distribution with a submicron fraction that was significantly enriched in the volatile trace species. The amount of submicron aerosol increased markedly with combustion temperature, from 4% of the ASTM ash value of the coal at 2050 K to 20% at 2450 K, supporting the hypothesis that the enrichment in more volatile species of the smaller ash particles is due to a process of vaporisation and recondensation of mineral constituents.