Catalytic purification of tarry fuel gas with carbonate rocks and ferrous materials
Catalytic purification of tarry fuel gas with carbonate rocks and ferrous materials
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DOI：
10.1016/0016-2361(92)90011-c
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发表时间：
1992-02
期刊：
影响因子：
7.4
通讯作者：
P. Simell;Jukka Leppälahti;J. Bredenberg
中科院分区：
文献类型：
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作者：
P. Simell;Jukka Leppälahti;J. Bredenberg
本研究比较了各种低成本材料催化燃气中焦油成分分解的能力。在管式反应器中测试了碳酸盐岩（白云石、石灰石）和黑色金属材料（铁烧结矿、球团矿）。来自泥炭燃烧气化炉的样品气流用作进料。处理温度的升高和停留时间的延长降低了焦油含量。对于碳酸盐岩，焦油在900 °C时几乎完全分解。含铁材料没有那么有效，但最有问题的焦油部分的含量显著降低。催化水煤气和水煤气变换反应使H2和CO含量增加，干气热值增加。碳酸盐岩的活性随Ca Mg比的增大而增大，随原岩粒度的减小而增大。碳酸盐岩中的铁和含铁物质中的矿物质也增加了活性。
This study compared the capability of various low-cost materials to catalyse the decomposition of tarry constituents in fuel gas. Carbonate rocks (dolomite, limestone) and ferrous materials (iron sinter, pellet) were tested in a tube reactor. Sample gas flow from a peat-fired gasifier was used as feed. An increase in the treatment temperature and extension of the residence time decreased the tar content. With carbonate rocks almost complete tar decomposition was accomplished at 900 °C. The ferrous materials were not as effective, but the content of the most problematic tar fraction decreased significantly. The thermal value of dry gas increased, due to the increase of H2and CO contents by catalytic water-gas and water-gas shift reactions. The activity of the carbonate rocks increased with a greater Ca Mg ratio and smaller grain size of the original rock. Activity was also increased by the presence of iron in the carbonate rocks and by the mineral matter in the ferrous materials.