Upgrading the solvent used for the thermal extraction of sub-bituminous coal
Upgrading the solvent used for the thermal extraction of sub-bituminous coal
复制标题
DOI：
10.1021/ef0601014
复制
发表时间：
2006-07
期刊：
影响因子：
5.3
通讯作者：
Nao Kashimura;T. Takanohashi;I. Saito
中科院分区：
文献类型：
--
作者：
Nao Kashimura;T. Takanohashi;I. Saito
HyperCoal是一种无灰煤，通过在360 °C左右的温度下用工业溶剂萃取生产，可以直接送入燃气轮机。我们寻找更强大的溶剂来提取低阶煤，如次烟煤。用甲醇-水或盐酸溶液从极性工业溶剂粗甲基萘油（CMNO）中提取极性物质。使用前者获得的可溶性级分（MW-S）在360 °C下提取73重量%（daf）的Wyodak安德森次烟煤，而使用后者获得的可溶性级分（AC-S）提取63重量%。这些提取产率远高于那些与CMNO（43重量%），表明分馏浓缩的材料，溶解煤的成分。MW-S比AC-S含有更多的吲哚。添加试验结果表明，吲哚对煤组分的萃取能力强于喹啉。此外，添加5重量%的甲醇的1-甲基-N-甲基-N-[2-（4-甲基-2-氧代苯基）-1-氧代苯基]-1-甲基-N-[2-氧代苯基]-1-氧代苯基]-1-氧代苯基的混合物。
HyperCoal is an ash-free coal produced by extraction with an industrial solvent at temperatures around 360 °C, which can be fed directly to gas turbines. We searched for more powerful solvents to extract low-rank coals, such as sub-bituminous coal. Polar materials were successfully concentrated from a polar industrial solvent, crude methylnaphthalene oil (CMNO), by extraction with a mixture of methanol and water or aqueous HCl. The soluble fraction obtained using the former (MW-S) extracted 73 wt % (daf) of Wyodak Anderson sub-bituminous coal at 360 °C, while that obtained using the latter (AC-S) extracted 63 wt %. These extraction yields were much higher than those with CMNO (43 wt %), indicating that fractionation concentrated the materials that dissolve the constituents of coal. MW-S contained more indole than AC-S. The results of addition tests suggested that indole had a greater ability to extract coal constituents than quinoline. In addition, the addition of 5 wt % methanol to a mixture of 1-methyln...