Abstract

Ashless extracts, hypercoals, were obtained from Tuvan coals of the Ulug-Khem basin by dissolving them in N-methylpyrrolidone. The yield of the extracts was 27.3–79.4%, and their ash content was 0.5–0.8%. The composition of the products of pyrolysis, carried out at 420°C, of the initial coals and the hypercoals obtained from them was studied. It was found that high volatile bituminous coal (coal from the Elegest deposit) can be extracted most effectively. The qualitative and quantitative compositions of pyrolysis products were not fundamentally different in the initial coals and the corresponding extracts. According to TGA data, the decomposition of extracts (hypercoals) occurred at lower temperatures relative to that of the original coals with a high yield of volatile components.

中文翻译：

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基于热解和 TGA 数据的图瓦共和国煤炭及其提取物的成分

摘要

无灰提取物，超煤，是通过将 Ulug-Khem 盆地的图瓦煤溶解在N-甲基吡咯烷酮中获得的。提取物的得率为27.3%~79.4%，灰分含量为0.5%~0.8%。研究了在 420°C 下进行的原始煤和从中获得的超级煤的热解产物的组成。研究发现，高挥发性烟煤（来自埃莱格斯特矿床的煤炭）可以最有效地开采。原始煤和相应提取物中热解产物的定性和定量组成没有根本不同。根据 TGA 数据，提取物（超煤）的分解发生在相对于原始煤较低的温度下，且挥发性成分产量较高。